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| Record 1/43 | | US6290681B1 | Flow monitoring device for medical application | Publication Number: US6290681B1  | | Title: Flow monitoring device for medical application | | Title (Original): Flow monitoring device for medical application | | Title (English): Flow monitoring device for medical application | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Fluid flow monitoring device for intravenous fluid, comprises transparent fluid conducting mechanism enclosing a movable stem body, and signal emitter-sensor arrangement | Abstract:
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized case for placement on the patient. The device includes a switch uses capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical fluid conducting means with a movable stem body which reacts to the motion of the IV fluid. A signal-emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member thus detecting when flow starts and stops, as well as the rate of flow. Collected information is stored in a data storage means and may be either displayed on a display means housed within the case, or alternately, the collected data may be uploaded to a computer. | Abstract (English):
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized case for placement on the patient. The device includes a switch uses capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical fluid conducting means with a movable stem body which reacts to the motion of the IV fluid. A signal-emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member thus detecting when flow starts and stops, as well as the rate of flow. Collected information is stored in a data storage means and may be either displayed on a display means housed within the case, or alternately, the collected data may be uploaded to a computer. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized case for placement on the patient. The device includes a switch uses capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical fluid conducting means with a movable stem body which reacts to the motion of the IV fluid. A signal-emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member thus detecting when flow starts and stops, as well as the rate of flow. Collected information is stored in a data storage means and may be either displayed on a display means housed within the case, or alternately, the collected data may be uploaded to a computer. | | Abstract (Spanish): | Claims:
What is claimed is:
1. A fluid flow monitoring device comprising:
a transparent fluid conducting means enclosing a stem body movable along the fluid conducting means and biased against a proximal interior shoulder of the fluid conducting means, said shoulder defining a fluid inlet; and
a signal emitter-sensor means positioned externally to the fluid conducting means for transmitting a signal across the fluid conducting means from an emitter of the emitter-sensor means, to a sensor of the emitter-sensor means, such that with the stem body in a first stem body position within the fluid conducting means, the signal is blocked, and with the stem body in a second stem body position within the fluid conducting means, the signal is not blocked, said second stem body position adapted by the stem body as a result of a fluid flow within the conducting means wherein the fluid flow is sensed by the emitter-sensor means as the stem body moves.
2. The device of claim 1 further including a masking means interposed between the emitter-sensor means and the stem body, the masking means adapted for focusing the signal.
3. The device of claim 1 wherein the fluid conducting means is of a conical shape oriented such that resistance to the fluid flow by the stem body when in the second position is less then when in the first position.
4. The device of claim 1 further including a processor circuit in communication with the signal emitter-sensor means, and comprising a processor means, a clock means, a data storage means, a visual display means, and an alerting means, all interconnected, so as to enable the circuit to identify a time data, and display a fluid flow state, type of medication scheduled, and time of next scheduled medication.
5. The device of claim 4 further including parameter measuring instrument signal receiving means.
6. The device of claim 4 further including a communication means interconnecting the processor circuit with a computer, the computer being programmed to record and display data.
7. The device of claim 6 wherein the communication means is at least one electrically conducting path.
8. The device of claim 6 wherein the communication means is a wireless device.
9. The device of claim 4 further including an alerting means for signaling a user when recorded data corresponds with preprogrammed data.
10. The device of claim 9 wherein the alerting means produces an audible noise.
11. The device of claim 9 wherein the alerting means produces a mechanical vibration.
12. The device of claim 1 wherein the stem body has a circular cross-section with one end thereof providing a generally flat surface, said surface not forming a tight seal when in contact with the proximal shoulder.
13. The device of claim 12 further including a wristwatch size case encompassing the processor circuit, said case positionable for viewing and further including a fluid inlet conducting means, and a fluid outlet conducting means.
14. The device of claim 1 wherein the signal emitter-sensor means comprises a linear sequence of independent sensors, movement of the stem body blocking at least one of said sensors, such that the position of the stem body is known at each position of the stem body within the conducting means.
15. The device of claim 1 wherein the stem body includes a generally circular outside surface, the surface providing a plurality of fluidic pathways for conducting the fluid between the stem body and the conical wall of the conducting means providing improved conductance of the fluid therebetween.
16. The device of claim 1 wherein the moveable stem body is optically clear.
17. The device of claim 16 wherein the fluid flow is optically opaque, the fluid blocking the signal reception in at least one position of the stem body, the stem body displacing the fluid flow in at least one other position of the stem body to allow the signal to be received.
18. The device of claim 1 wherein the stem body and the fluid conducting means are shaped, finished and contoured so that the static line pressure of the fluid is a constant at all points in the device and irrespective of the position of the stem body within the conducting means. | | Claims Count: 18 | Claims (English):
What is claimed is:
1. A fluid flow monitoring device comprising:
a transparent fluid conducting means enclosing a stem body movable along the fluid conducting means and biased against a proximal interior shoulder of the fluid conducting means, said shoulder defining a fluid inlet; and
a signal emitter-sensor means positioned externally to the fluid conducting means for transmitting a signal across the fluid conducting means from an emitter of the emitter-sensor means, to a sensor of the emitter-sensor means, such that with the stem body in a first stem body position within the fluid conducting means, the signal is blocked, and with the stem body in a second stem body position within the fluid conducting means, the signal is not blocked, said second stem body position adapted by the stem body as a result of a fluid flow within the conducting means wherein the fluid flow is sensed by the emitter-sensor means as the stem body moves.
2. The device of claim 1 further including a masking means interposed between the emitter-sensor means and the stem body, the masking means adapted for focusing the signal.
3. The device of claim 1 wherein the fluid conducting means is of a conical shape oriented such that resistance to the fluid flow by the stem body when in the second position is less then when in the first position.
4. The device of claim 1 further including a processor circuit in communication with the signal emitter-sensor means, and comprising a processor means, a clock means, a data storage means, a visual display means, and an alerting means, all interconnected, so as to enable the circuit to identify a time data, and display a fluid flow state, type of medication scheduled, and time of next scheduled medication.
5. The device of claim 4 further including parameter measuring instrument signal receiving means.
6. The device of claim 4 further including a communication means interconnecting the processor circuit with a computer, the computer being programmed to record and display data.
7. The device of claim 6 wherein the communication means is at least one electrically conducting path.
8. The device of claim 6 wherein the communication means is a wireless device.
9. The device of claim 4 further including an alerting means for signaling a user when recorded data corresponds with preprogrammed data.
10. The device of claim 9 wherein the alerting means produces an audible noise.
11. The device of claim 9 wherein the alerting means produces a mechanical vibration.
12. The device of claim 1 wherein the stem body has a circular cross-section with one end thereof providing a generally flat surface, said surface not forming a tight seal when in contact with the proximal shoulder.
13. The device of claim 12 further including a wristwatch size case encompassing the processor circuit, said case positionable for viewing and further including a fluid inlet conducting means, and a fluid outlet conducting means.
14. The device of claim 1 wherein the signal emitter-sensor means comprises a linear sequence of independent sensors, movement of the stem body blocking at least one of said sensors, such that the position of the stem body is known at each position of the stem body within the conducting means.
15. The device of claim 1 wherein the stem body includes a generally circular outside surface, the surface providing a plurality of fluidic pathways for conducting the fluid between the stem body and the conical wall of the conducting means providing improved conductance of the fluid therebetween.
16. The device of claim 1 wherein the moveable stem body is optically clear.
17. The device of claim 16 wherein the fluid flow is optically opaque, the fluid blocking the signal reception in at least one position of the stem body, the stem body displacing the fluid flow in at least one other position of the stem body to allow the signal to be received.
18. The device of claim 1 wherein the stem body and the fluid conducting means are shaped, finished and contoured so that the static line pressure of the fluid is a constant at all points in the device and irrespective of the position of the stem body within the conducting means. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A fluid flow monitoring device comprising:
a transparent fluid conducting means enclosing a stem body movable along the fluid conducting means and biased against a proximal interior shoulder of the fluid conducting means, said shoulder defining a fluid inlet; and
a signal emitter-sensor means positioned externally to the fluid conducting means for transmitting a signal across the fluid conducting means from an emitter of the emitter-sensor means, to a sensor of the emitter-sensor means, such that with the stem body in a first stem body position within the fluid conducting means, the signal is blocked, and with the stem body in a second stem body position within the fluid conducting means, the signal is not blocked, said second stem body position adapted by the stem body as a result of a fluid flow within the conducting means wherein the fluid flow is sensed by the emitter-sensor means as the stem body moves. | Independent Claims:
1. A fluid flow monitoring device comprising:
a transparent fluid conducting means enclosing a stem body movable along the fluid conducting means and biased against a proximal interior shoulder of the fluid conducting means, said shoulder defining a fluid inlet; and
a signal emitter-sensor means positioned externally to the fluid conducting means for transmitting a signal across the fluid conducting means from an emitter of the emitter-sensor means, to a sensor of the emitter-sensor means, such that with the stem body in a first stem body position within the fluid conducting means, the signal is blocked, and with the stem body in a second stem body position within the fluid conducting means, the signal is not blocked, said second stem body position adapted by the stem body as a result of a fluid flow within the conducting means wherein the fluid flow is sensed by the emitter-sensor means as the stem body moves. | Description:
This application is a continuation in part of application Ser. No. 08/360,994, filed Dec. 20, 1994, now U.S. Pat. No. 5,445,622.
FIELD OF THE INVENTION
This invention relates to intravenous (IV) fluid delivery systems and in particular to a monitoring device for providing information on when and if the delivery of an IV fluid to a patient actually occurred.
BACKGROUND OF THE INVENTION
The rapid rise of health care costs has become an important issue in modern society. To help reduce the costs, professional care givers have begun to seek alternatives, one of which is home health care services. These services not only tend to reduce costs, but are also preferred by the patient wishing to remain in his familiar environment. Among the many types of services provided are: respiratory care, rehabilitation therapy, cardiac monitoring procedures, and infusion therapy.
Infusion therapy involves IV administration of drugs. Making this therapy safe and convenient for a home situation allows a great number of patients who would otherwise be hospitalized to remain at home and still receive medication. Currently, over 300,000 patients annually use a home infusion therapy delivery system. Typically, patients include the elderly with chronic diseases like cancer, patients with either Crohns disease, HIV or other immune system disorders, and patients suffering from chronic pain. Many of these patients require infusion treatment over a long duration such as months or even years.
One characteristic of home IV drug therapy, in contrast to hospital administered therapy, is that a nurse is not always present or readily available. To provide safe and effective treatment, home infusion therapy usually requires that the patient himself, or other non-professional caregiver, such as a relative, administer IV fluids. Special training is required because many home care patients on IV therapy require multiple drugs or multiple doses of the same drug each day. The average nursing visit to a home infusion therapy patient is typically about 90 minutes including commuting time. The typical patient gets between 1 and 4 nursing visits per week, but has to take IV medications daily. Since the cost of daily care by a nurse is not usually covered by most insurers, the cost of attention by a nurse is most economically applied in training the patent or other amateur caregiver and in monitoring the therapy program.
In the home care situation non-compliance, over-medication or under-compliance with the IV therapy protocol is a serious issue and quite prevalent. For instance, non-compliance (not taking a medication) or under-compliance (taking fewer or smaller dosages than prescribed) occurs in up to approximately one-third to one-half of elderly home therapy patients. Typical compliance related problems include forgetting to follow the specified procedure for administration of the IV medication, forgetting to turn on the various devices used to administer the IV medication and forgetting to turn off a medical device which then delivers too much medication (over-medication). Reasons for compliance related problems are varied and include poor communication, confusion or forgetfulness regarding the procedures and/or equipment, or even attempts to avoid the adverse side effects of IV medications and fluids. Misapplication of the home IV therapy protocol can have serious ramifications resulting in greatly increased home health care nursing expenses, re-hospitalization, and reduction in health status of the patient. Thus, there is a strong need for improved monitoring of patient compliance with the health care program. Benefits of such improved monitoring and compliance include, but are not limited to, improved health at a lower cost, while still remaining in the preferred home environment.
To properly monitor compliance with an IV therapy protocol, a device may be provided for monitoring the flow of IV medications and fluids. The IV fluids for a single patient are likely to come from several different sources or systems including IV pumps, IV fluid controllers, gravity drips, syringes, and other devices.
A typical gravity powered IV may be as simple as an IV bag hanging on a pole in which a nurse or care giver manually adjusts a valve to limit the flow rate, but not control it accurately, or it may use an electronic controller which optically counts the drops of fluid as they pass an optical sensor and then adjusts the flow rate accordingly. However, optical drop counting sensors only provides an indication that the fluid is flowing past the sensor when in a vertical orientation such as hanging from an IV pole. Thus the patient and IV delivery equipment must remain relatively stationary during the administration of the medication or fluid. Optical drop counters also function poorly at higher flow rates and higher line pressures, such as when a syringe is used, because the fluid moving past the drop counter tends to become a continuous stream rather than remaining discrete drops. Therefore, the optical drop counter technique cannot be adapted for use with all fluid sources.
An alternative to an optical drop counting sensor, or as a stand-alone measuring device, is a single point pressure transducer to measure the fluid pressure in the IV tubing at a selected point of measurement. This type of sensor is common in IV pumps and is used to indicate that the pump is generating a static pressure head and, correspondingly, causing fluid flow or backpressure in the event of an occlusion in the IV line. This type of sensor only determines line pressure at the selected point, and is only useful in monitoring the pressure caused by the IV pumping device and the related backpressure caused by moving fluids into the patient's body. However, this type of single-point pressure sensor is useful in many IV delivery systems to determine if fluid pressures are at correct levels, and to detect changes in fluid pressure which are indicative of an occluded or collapsed vein. Often, when a certain threshold pressure is detected in a device using this type of sensor, an alarm is sounded to warn of a flow problem. This type of device measures changes in the static line pressure of a fluid line, but is unable to determine if a patient is following proper IV drug administration procedures and cannot differentiate between changes in pressure due to fluid flow versus some other cause, such as an occlusion in which there is actually no fluid flow.
Increased backpressure in an IV fluid line causes problems, and, as described above, many IV fluid delivery systems use a sensor to determine when high backpressure develops, i.e., greater than a few inches of water, for instance when an infiltration of tissue occurs or the tubing becomes occluded. Upon the detection of a significant backpressure, the device sounds an alarm and may function to automatically discontinue the delivery of the IV medication and fluids. Therefore, it is important that any device used to monitor whether or not fluid is flowing does not cause a substantial increase in backpressure or a false occlusion alarm might be triggered.
Other alternatives use indirect methods to monitor the flow of IV fluids. For instance, the speed and number of rotations in a pump mechanism may be monitored to indirectly determine when fluid flow is occuring. This is useful for flows caused by an IV pump, but is of no value to patients who also receive gravity drips or fluids via syringe. Since nearly all infusion therapy patients must perform venous access device maintenance procedures, such as a heparin flush via syringe to maintain the patency of their IV lines, this pump rotation technique is not of value for monitoring all infusions.
The time usage for an IV delivery system may be recorded to prepare bills to patients. Typically, the information is printed or stored in an electronic memory device such as the electronic controls for the drop counter or IV pump. The information may be used to determine which of several patients are using the IV system being monitored, it may be used to coordinate several IV delivery systems with a centrally managed pump, or it may be used to facilitate billing and reimbursement. Unfortunately, none of these systems accommodate tracking of fluid delivered from a variety of sources such as to a patient who receives syringes, gravity drips, and IV pump infusions. The present invention provides an improved flow indicator switch, which overcomes the above-mentioned limitations of the prior art.
SUMMARY OF THE DISCLOSURE
The present invention is an IV system which provides certain monitoring advantages. An electronic data processing and storage device is used in conjunction with a unique flow indicator switch to record events in the IV infusion process. The processor may be connected in real time or may be used simply as a data recorder for later analysis. If used in real time the processing device is used to interpret signals related to IV flow, to provide instructions on how to properly sense whether fluid flow is occurring, and on when to inform the user to use the IV system or even to take other medications, vis-a-vis, oral or injection therapy, etc.
In the preferred embodiment of the present invention, an IV infusion system provides a switch body conducting means having a movable stem body indicator to monitor a flow of fluid through a fluid flow path. The flow indicator includes a switch having a movable stem body that is forced to move by direct viscous forces against it within the flow path, so that it moves in the direction of fluid flow. The movable stem body can sense a change in system flow including positive flow startup from stagnation in order to indicate that fluid flow has stopped or started. A signal emitter-sensor means preferably including an infrared emitter and detector sense the change of position of the movable switch member. A spring element provides a restoring force to return the movable switch member to a null position indicating "no flow" when fluid flow has ceased. The force exerted by the spring element is adjusted to sense flow rates as low as 3.0 milliliters per hour.
Further, the conducting means has a variable orifice positioned in a shaped fluid passageway in the form of an annulus. The orifice changes in cross-sectional size depending upon the position of the movable stem body. The cross-sectional area of the orifice is designed to enhance sensitivity to low fluid flows when the orifice has a smaller cross-sectional area, as well as to limit backpressure generated by higher fluid flow when the orifice has a larger cross-sectional area. In the preferred embodiment, the increase in backpressure is limited to about 4 inches of water with flow rates as high as 3600 milliliters per hour. In the preferred embodiment, the flow indicator switch functions equally well at line pressures from a fraction of an inch of water to over 60 pounds per square inch pressure because no occlusion of the flowpath occurs. Therefore, the flow indicator switch is not an occlusive device and does not react to changes in static pressure.
The processor is preferably operationally coupled to the flow indicator switch, to monitor the time and date of starts and stops of IV fluid flow in the system. One preferred embodiment of the present invention provides for the processor to be housed in a case about the size of a wrist watch so that it is highly portable for wearing on the person. This provides several key advantages and benefits to the infusion patient which would not otherwise become possible.
The processor and the flow indicator may be operationally coupled by fluid conduits, electrical conductors, wireless transmitters and receivers, or the like. The processor includes a memory storage device which retains information related to the programmed IV protocol and the actual time of start and stop events. The processor may of course be interconnected with a computer or other high speed data device for data archiving purposes and for further data analysis. In the preferred embodiment, the processor is serially coupled with a notebook PC that downloads prescribed IV protocols and uploads actual fluid flow start/stop events for comparison. The downloaded and uploaded data may include fluid flow events from any or all sources of fluid including, but not limited to, IV pumps, gravity drips, and syringes.
The flow indicator switch may operate in any attitude providing an advantage over prior apparatus. Moreover, the flow indicator switch housing is formed with a fluid flow path that is easily de-aired by a flow of fluid through the device housing. The flow indicator switch is a passive device, in which the movable switch member is actuated by the fluid flow through the tube. It can have a sensitivity to low fluid flows of less than or equal to 3.0 milliliters per hour and a backpressure limited to less than or equal to 4.0 inch of water line pressure at higher flow rates common to intravenous drug therapy, such as 3600 milliliters per hour. The flow indicator switch can work well with pulsed fluid flows without triggering a false alarm in the fluid delivery equipment.
Another advantage is that the small size and portability of the flow indicator switch precludes the necessity of having the patient attach and detach the device each time it is used. It may be attached to the patient's IV catheter for long periods of time. Also, since it is a passive device, it requires less electrical power and maintenance, thereby reducing health care costs. It may be connected to a catheter or IV tubes by standard connectors typically used on common IV equipment, or it may be an integral part of the IV catheter tube assembly.
Other features and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, various features of the several embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
A detailed description of embodiments of the invention will be made with reference to the accompanying drawings, wherein like numerals designate corresponding parts in the several figures, in such drawings:
FIG. 1 particularly showing a signal emitter-sensor means and fluid conducting means with a stem body in a first position against a proximal shoulder is a perspective view showing on overview of the present invention in a general orientation as applied to a patient in a wrist or arm mounted embodiment;
FIG. 2 is a schematic representation of a first prefered embodiment of the present invention of FIG. 1 shown as the simple flow indicator switch held within the case shown in FIG. 1, wherein some dimensions are shown exaggerated for better understanding of the principles involved, and particularly showing a flow conduit, inlet and outlet orifices, stem body, and light emitter and detector of the preferred embodiment;
FIG. 2A is a cross-section view of the flow indicator switch taken along lines 2A--2A of FIG. 2 and particularly showing the preferred relationship between a proximal shoulder, the fluid conductor and an end of the stem body, wherein some dimensions are shown exaggerated for better understanding of the principles;
FIG. 2B is a schematic representation similar to that of FIG. 2 showing an alternate position of the stem body of the invention;
FIG. 3 is a schematic representation of a second prefered embodiment of the present invention of FIG. 1 shown as a flow rate indicator held within the case shown in FIG. 1, wherein some dimensions are shown exaggerated for better understanding of the principles involved, and particularly showing a flow conduit, inlet and outlet orifices, stem body, and light emitter and detector of the preferred embodiment;
FIG. 3A is a cross-section view of the flow indicator switch taken along lines 3A--3A of FIG. 3 and particularly showing the preferred relationship between a proximal shoulder, the fluid conductor and an end of the stem body, wherein some dimensions are shown exaggerated for better understanding of the principles;
FIG. 3B is a schematic representation similar to that of FIG. 2 showing an alternate position of the stem body of the invention;
FIG. 4 is a general block diagram of an electronic circuit of the invention showing the preferred interconnections of various electrical elements of the invention; and
FIG. 5 is a view of the preferred layout of the face of a wrist watch sized event monitor housing of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a fluid flow device for monitoring the flow of a fluid such as is used in medical applications such as infusion therapy where an IV fluid is monitored for providing information on the delivery of the IV fluid to a patient. Other fluids, and other applications both within medicine and outside of the medical field may be suitable for advantageously applying the device. Preferably, the device has a wristwatch sized case 80 that attaches to a patient's arm or that may be taped to the patient's chest depending upon the site of the IV catheter. The case 80 provides a visual display means 85 that is easily viewed by the patient. As shown more clearly in FIG. 5, the display 85 preferably displays a variety of different pertinent information such as the current time and date; the time and date of the next IV infusion process including which drugs to use; and the time and date of the last IV infusion process performed.
The monitoring apparatus for the intravenous fluid delivery is a system comprised of two primary components, the first being a processor circuit 60 housed within the case-80, used to store and record electronic data pertaining to fluid flow. The second component is a signal emitter-sensor means 52, for detecting fluid stop and start events as well as potentially monitoring of fluid flow rate.
Referring now to FIGS. 2, 2A and 2B, an important component of the fluid flow monitoring device is shown as fluid conducting means 20. Preferably, the conducting means 20 is a conductor that has a clear conical wall 22 for advantageously visually ensuring that air is removed from the IV fluid path. In one preferred embodiment, the fluid conductor 20 extends between proximal and distal fluid conduits 30P and 30D. The case includes an inlet fluid conductor means 87P that connects the proximal conduit 30P to a source of intravenous fluid, preferably an IV bag 84, or a syringe (not shown) or an IV pumping device (not shown) well known to the field. An outlet fluid conductor means 87D connects the distal conduit 30D to an intravenous discharge device 88 that discharges the IV fluid to the patient's vein.
The conductor wall 22 has a conical shape having a slight wall divergence of approximately between 0.03 to 2.0 degrees, so that it is larger at its distal end. Preferably, a proximal and distal circular shoulders 33P and 33D are provided at the ends respectively of the conductor 20, the proximal shoulder 33P defining an inlet fluid orifice 35P, and the distal shoulder 33D defining an outlet orifice 35D.
In the preferred embodiment, an opaque stem body 40 for use with optically clear fluids, is a movable piston or plug element, and is provided within the the conductor 20. An alternate embodiment, to be discussed later, uses an optically clear stem body 40 for use with opaque fluids.
In the preferred embodiment the body 40 has a volume of 6. 8586×10 -3 cubic centimeters and a density of approximately 1.25 grams per cubic centimeter. As shown in FIG. 2, the stem body 40 preferably has a circular cross section and is slightly smaller in diameter than the conductor 20. When the stem body 40 is positioned at the proximal end of the conductor 20 abutting the proximal shoulder 33P, the stem body 40 does not engage any portion of the conical wall 22. The stem body 40 has a generally flat surface 42 at the end that contacts the proximal annular shoulder 33P, but does not form a tight seal with the shoulder. The stem body 40 may have a relatively smooth (FIG. 2A) or a ridged (FIG. 3A) outer surface 44 that provides a series of fluidic pathways 46 for conducting the fluid between the stem body 40 and the conical wall 22, thus providing improved conductance of the fluid. The surface 44 and fluid pathways 46 are shown in FIGS. 3 and 3A in an exaggerated manner. The preferred dimensional clearance between stem body 40 and the proximal shoulder 33P is about 0.0015 inches and this effective gap may often be accomplished by virtue of the natural texture or roughness of the surface of the materials without having to especially provide for grooved fluid pathways as shown in the aforementioned figures. The stem body is biased, preferably by means of a stem body biasing means 45 such as a spring, so that the surface 42 of the stem body 40 is urged in position against the proximal shoulder 33P, thus partially, but not fully, closing the fluid conductor 20 under static conditions. This partial closure allows at least some of the fluid to pass out of the conductor 20 in the direction away from the patient in the event that blood must be drawn from the patient or fluid must be removed from the line. It also allows for instantaneous equilibrium between pressure changes upstream or downstream of the stem body 40 in that upstream and downstream fluids are not mutually isolated. Occlusion of the flow path does not occur.
The spring constant of the biasing means 45 is preferably approximately 0.06 pounds per inch of deflection which means that the stem body 40 is displaced by a very slight flow of fluid into inlet 35 P and out of outlet orifice 35D. It should be noted, however, that other spring constants and stem body masses may be selected for similar performance.
In one preferred embodiment shown in FIG. 2, the signal emitter-sensor means 52 consists of a signal emitter 50 positioned outside of the conductor 20, lateral to the stem body 40, and a single signal detector 55 positioned directly across from the emitter 50, on the opposite side of the conductor 20. As shown in FIG. 2, the left-hand side edge of the detector 55 is aligned with the proximal shoulder 33P and the base of the stem body 40. A masking means is positioned between the emitter-sensor means 52 and the stem body 40. In one preferred embodiment, the masking means 52 consists of one mask 56A positioned between the signal emitter 50 and the stem body 40, and another mask 56B placed between the detector 55 and the opposing side of the stem body 40. Preferably, both masks 56A and 56B have tiny openings that are aligned in corresponding pairs in opposition across the fluid conductor. In the preferred embodiment, these openings are between 0.003 to 0.030 inches in diameter depending upon the power of the emitter 50 and the sensitivity of the detector 55 These openings in the masks 56A and 56B restrict signal travel from the emitter 50, to a narrow signal path 58 across the fluid conductor 20, thereby focusing the signal. As seen in FIG. 2, when the stem body 40 is in position against the proximal shoulder 33P, the signal path 58 between the emitter 50 and the detector 55 is fully blocked by the opaque stem body 40, the signal is prevented from fully reaching the signal detector 55. However, as seen in FIG. 3, when the stem body 40 moves away from the proximal shoulder 33P, the signal path 58 is provided. Thus, any change in position of the stem body 40 within fluid conductor 20 is easily determined by whether the signal path 58 is blocked or not.
Although FIGS. 2 and 2B show an embodiment with a single signal detector 55, the signal emitter-sensor 52 may also consist of a linear sequence of independent signal emitters 50 and sensors 55 as shown in FIG. 3. In this alternative manner, an IV line with a constant flow, such as those used for KVO or "Keep Vein Open" applications, may be monitored for a meaningful change in flow rate. In the preferred embodiment, the signal emitter-sensor means 52 preferably emits and senses light signals in infrared wavelengths, although it is by no means limited to such use.
As mentioned previously, in the preferred embodiment the stem body 40 is opaque in order to block the passage of the signal from the emitter 50 to the detector 55 when used with optically clear fluids. In certain instances however, a patient may receive IV fluids such as blood products or feeding solutions, that are not optically clear. The optical properties of these opaque solutions naturally attenuate light passing through them. This attenuation is proportional to the length of distance that the light must pass through the fluid. Therefore, an alternative embodiment of the stem body 40 uses a clear plastic which then limits the attenuation to that which occurs over a few thousandths of an inch. In this manner, the electronics may be modified to receive an optical signal for "no-flow" conditions and an opaque or blocked signal for "flow" conditions.
The processor circuit 60 of the intravenous system may use a digital microprocessor chip to provide a logic program for interfacing the device into a therapeutic program of IV infusion and other medications. The circuit 60 preferably provides a means for using electrical signals from the detector 55 to store IV fluid flow event information. Intermittently, it is possible that non-fluidic events, such as the motion of a patient, may cause spurious signals due to minor displacements of the stem body 40. Testing has shown that these spurious signals are of short duration, such as a fraction of a second. The case 80 houses the processor circuit 60 which also includes logic for determining minimum "Flow On" time periods and intervals to remove most spurious signals from the log of flow events stored in memory.
The processor circuit 60 preferably includes a processor means 62, clock means 90 and a data storage means 95 interconnected so as to enable the processor circuit 60 to gather and record information concerning the infusion such as the time of day at start, time of day at stop, and time of day at change in IV flow rate with each associated flow rate change. The processor circuit 60 also preferably includes a parameter measuring instrument signal receiving means 130, which, in one preferred embodiment, consists of an analog-to-digital circuit, an amplifier and a jack. A variety of different measuring instruments (not shown), such as a scale or a thermometer, may be quickly and easily interconnected with the instrument signal receiving means 130 so that parameters pertinent to the patient's (pulse, blood pressure, body temperature, weight, etc.) condition may be easily and effectively monitored. The data received by the signal receiving means 130 is stored in the data storage means 95.
All data stored in the data storage means 95 may either be visually accessed by the patient at the display means 85 of the processor circuit 60 contained within the case 80, or, alternately, the circuit 60 may also include a communication means 100 that enables communication between the circuit 60 and a computer system 110. The communication means 100 may be either a hardwire or a wireless device of the type well known in the art. From the computer system 110, recorded data may be quickly uploaded and viewed.
A variety of pertinent information, such as oral medication schedule, may also be programmed into the computer 110 as desired. The processor circuit 60 of the present invention preferably includes an alerting means 120 for reminding the patient when to take oral medications or begin an IV infusion, for alerting the patient when the recorded body temperature is too high, fluid flow rate is too low, etc. To accomplish this, the desired information, as for example the times of day at which infusions should begin, is programmed into the computer 110. When the time recorded by the clock means 90 corresponds with the preprogrammed infusion times, the alerting means 120 alerts the patient by producing an audible alarm, vibrating or any other such means. In the same manner, a range of preferred fluid flow rates may be preprogrammed into the computer 110, and when the recorded flow rate during a infusion does not fall within the specified range, the alerting means is actuated.
Thus, in use, the proximal conduit 30P is connected to an IV bag or other fluid source, and the distal conduit 30D connects to an intravenous discharge device interconnected with a vein. Both conduits 30P and 30D and the conductor 20 are filled with IV fluid and deaired prior to attaching to the patient, and the stem body 40 is nominally positioned against the proximal shoulder 33P indicating a no flow condition. The system remains static until flow from the IV bag or other fluid source is activated and the stagnation pressure due to fluid motion against the stem body 40 increases. The force on stem body 40 overcomes the restoring force of the biasing means 45, causing stem body 40 to move away from the proximal shoulder 33P. This allows fluid which flows from the conduit 30P and through the inlet orifice 35P to be immediately sensed. The force of the fluid flow moves stem body 40 to a position within the fluid conductor 20 where a state of dynamic equilibrium is achieved between the force of fluid against stem body 40 and the restoring force. As stem body 40 moves further toward the distal end of the fluid conductor 20, as is typical at higher flow rates, the annular flow path area between the stem body 40 and the conical conductor wall 22 becomes larger, thereby increasing flow conductance in the conductor 20. Therefore a nonlinear relationship is developed between stem body displacement and conductance such that backpressure is minimized very quickly.
In particular, when the stem body 40 is positioned against the proximal shoulder 33P, as shown in FIG. 2, it blocks the signal from arriving at the leftmost edge of sensor 55. This leftmost edge of sensor 55 is particularly of interest in establishing if fluid in the system is static, or is flowing. Further, the signal reaching the leftmost edge of sensor 55 does not have to saturate the photodector means in signal sensor 55. In the preferred embodiment, a signal of about 300 millivolts is generated when the sensor 55 is fully saturated when both tiny openings 56A and 56B are fully exposed. However, an almost minuscule change in position of stem body 40 will cause a smaller change in voltage from 0.0 millivolts (totally opaque) to 0.5 millivolts because the leftmost edge of sensor 55 is partially illuminated. This smaller change is voltage is used to determine that fluid motion has commenced or ceased. Thus the signal induced by the leftmost edge of sensor 55 is used in the preferred embodiment to determine the "flow ON/OFF" time periods. The detector 55 signals are used in the processor circuit 60, thereby to log start and stop of fluid flow.
While the invention has been described with reference to a preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: Remote Medical Corporation,Newport Beach,CA | | Assignee/Applicant First: Remote Medical Corporation,Newport Beach,CA | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: Remote Medical Corporation | | Assignee - Original w/address: Remote Medical Corporation,Newport Beach,CA | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA | | Inventor Count: 1 | | Attorney/Agent: Gene Scott Patent Law & Venture Group | | Attorney/Agent - w/Address: Gene Scott Patent Law & Venture Group | | Correspondent: | | Correspondent - w/Address: | | Examiner: Mendez, Manuel | | Publication Country Code: US | | Publication Kind Code: B1 | | Publication Date: 2001-09-18 | | Publication Month: 09 | | Publication Year: 2001 | | Application Number: US1995507122A | | Application Country: US | | Application Date: 1995-07-26 | | Application Month: 07 | | Application Year: 1995 | | Application with US Provisional: US1995507122A | 1995-07-26 | | Priority Number: US1994360994A | | Priority Country: US | | Priority Date: 1994-12-20 | | Priority Date - Earliest: 1994-12-20 | | Priority Month: 12 | | Priority Year(s): 1994 | | Earliest Priority Year: 1994 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US199483609A
| 1994-12-20
| US5445622A
| 1995-08-29
| Continuation-in-part
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005168, G01P001300 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
G01P001300
| G
| G01
| G01P
| G01P0013
| G01P001300
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/16886
G01P 13/0086
| Y10S 128/13
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604246, 128DIG13, 604065 | | US Class (divided): 604/246, 128/DIG13, 604/065 | | US Class - Main: 604246 | | US Class - Original: 604246 | 604065 | 128DIG13 | | ECLA: A61M0005168M, G01P001300C2 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4827970A
| 1989-05-09
| Sugisaki Yuzuru
| KAWASUMI LAB INC
| -
| 0 (Examiner)
|
| Title: Device for controlling liquid dropping |
| |
US5267980A
| 1993-12-07
| Dirr Jr. William J.
| RANDOM CORP
| -
| 0 (Examiner)
|
| Title: Optical components for an I.V. flow detector |
| |
US4452273A
| 1984-06-05
| Hanzawa Yoshiki
| TERUMO CORP
| -
| 0 (Examiner)
|
| Title: Apparatus for controlling drop-wise flow of fluid material |
| |
US4261388A
| 1981-04-14
| Shelton Christopher D.
| FRENSHORE LTD
| -
| 0 (Examiner)
|
| Title: Drop rate controller |
| |
US4680977A
| 1987-07-21
| Conero Ronald S.
| IVAC CORP
| -
| 0 (Examiner)
|
| Title: Optical flow sensor |
| |
US4652262A
| 1987-03-24
| Veracchi F. Baldo
| CRITIKON GMBH
| -
| 0 (Examiner)
|
| Title: Gravity infusion regulating apparatus |
| |
US5445622A
| 1995-08-29
| Brown Eric W.
| BROWN; ERIC W
| -
| 0 (Examiner)
|
| Title: Flow switch device for medical applications |
| |
| | Count of Cited Refs - Patent: 7 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
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EP2278913A1
| 2011-02-02
| HOSPIRA INC
|
JP2007111539A
| 2007-05-10
| UP MAN GMBH & CO MED SYSTEMS K
|
US20100274128A1
| 2010-10-28
| MALLINCKRODT INC
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US20110270159A1
| 2011-11-03
| MEDTRONIC INC
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US6491640B1
| 2002-12-10
| PULSION MEDICAL SYS AG
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US6523414B1
| 2003-02-25
| ZEVEX INC
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US6641562B1
| 2003-11-04
| HPS MEDICAL INC
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| 2005-04-12
| DISETRONIC LICENSING AG
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US6907788B2
| 2005-06-21
| ZEVEX INC
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US6980852B2
| 2005-12-27
| SUBQIVIEW INC
|
US6999731B2
| 2006-02-14
| INTEL CORP
|
US7121143B2
| 2006-10-17
| ZEVEX INC
|
US7169107B2
| 2007-01-30
| JERSEY-WILLUHN KAREN
|
US7184820B2
| 2007-02-27
| SUBQIVIEW INC
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US7326187B2
| 2008-02-05
| JMS CO LTD
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US7327273B2
| 2008-02-05
| HUNG ORLANDO R
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US7875009B2
| 2011-01-25
| JMS CO LTD
|
US7887520B2
| 2011-02-15
| SIMON MICHAEL G
|
US7914483B2
| 2011-03-29
| BAXTER INT
|
US7921718B2
| 2011-04-12
| ZEVEX INC
|
US8215157B2
| 2012-07-10
| WANG JONG H
|
US8308698B2
| 2012-11-13
| WAGNER GARY S
|
US8361010B2
| 2013-01-29
| BAXTER INT
|
US8366667B2
| 2013-02-05
| BAXTER INT
|
US8449500B2
| 2013-05-28
| DELCASTILLO JORGE
|
US8480634B2
| 2013-07-09
| SIMON MICHAEL G
|
US8523797B2
| 2013-09-03
| LOWERY MICHAEL G
|
US8556869B2
| 2013-10-15
| SIMON MICHAEL G
|
US8801656B2
| 2014-08-12
| LOWERY MICHAEL G
|
USD633201S1
| 2011-02-22
| ACE MEDICAL CO LTD
|
WO2005118030A2
| 2005-12-15
| BAXTER INT
|
WO2013112832A1
| 2013-08-01
| UNIV PITTSBURGH
|
| | Count of Citing Patents: 32 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2005-11-15
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 2005-09-18 |
| |
2005-09-19
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
2005-04-06
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
2000-05-30
| AS
| -
|
| Description: ASSIGNMENT REMOTE MEDICAL CORPORATION, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:010884/0111 2000-05-25 |
| |
| | Post-Issuance (US): EXPI Expiration 2005-09-18 2005 2005-11-15 2005 DUE TO FAILURE TO PAY MAINTENANCE FEES | | Maintenance Status (US): E1 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
REMOTE MEDICAL CORPORATION,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2000-05-25
| 010884/0111
| 2000-05-30
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: GENE SCOTT PATENT LAW & VENTURE GROUP 3151 AIRWAY AVE., SUITE K-105 COSTA MESA, CA 92626 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
REMOTE MEDICAL CORPORATION,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2000-05-25
| 010884/0111
| 2000-05-30
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: GENE SCOTT PATENT LAW & VENTURE GROUP 3151 AIRWAY AVE., SUITE K-105 COSTA MESA, CA 92626 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US6290681B1
| 20010918
| Brown Eric W.
| REMOTE MEDICAL CORP
|
| Title: Flow monitoring device for medical application |
| |
US5445622A
| 19950829
| Brown Eric W.
| BROWN; ERIC W
|
| Title: Flow switch device for medical applications |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US6290681B1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US6290681B1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 2/43 | | US5488368A | A/D converter system and method with temperature compensation | | Publication Number: US5488368A | | Title: A/D converter system and method with temperature compensation | | Title (Original): A/D converter system and method with temperature compensation | | Title (English): A/D converter system and method with temperature compensation | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: A=D converter with temp. compensation adjusts uncompensated digital signal to compensate for temp. variances, and uses voltage reference source whose signal is attenuated by passive circuit | Abstract:
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. The A/D converter circuit has a passive temperature compensation feature to substantially eliminate or reduce the effects of thermal drift and of operating at different temperatures. Also, the A/D converter circuit can be coupled to a plurality of transducer inputs, such that the A/D converter circuit can measure voltage, current and resistance input signals. | Abstract (English):
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. The A/D converter circuit has a passive temperature compensation feature to substantially eliminate or reduce the effects of thermal drift and of operating at different temperatures. Also, the A/D converter circuit can be coupled to a plurality of transducer inputs, such that the A/D converter circuit can measure voltage, current and resistance input signals. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. The A/D converter circuit has a passive temperature compensation feature to substantially eliminate or reduce the effects of thermal drift and of operating at different temperatures. Also, the A/D converter circuit can be coupled to a plurality of transducer inputs, such that the A/D converter circuit can measure voltage, current and resistance input signals. | | Abstract (Spanish): | Claims:
What is claimed is:
1. An A/D convertor circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog-to-digital conversion circuit that produces an uncompensated digital signal;
*
temperature compensation means for adjusting the uncompensated digital signal from the analog-to-digital conversion circuit to produce the digital signal; and
*
wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the A/D circuit; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the analog-to-digital circuit further includes a voltage reference input, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to approximate the full scale input range of the analog signal.
2. A circuit according to claim 1, wherein the A/D convertor circuit further includes an auto-zero circuit to further reduce affects of a system drift.
3. A circuit according to claim 1, wherein the analog signal is a DC signal, and wherein the A/D convertor circuit further includes circuitry that is adapted to receive and convert DC signals.
4. A circuit according to claim 1, wherein the A/D convertor circuit further includes a driver circuit to drive at least one analog transducer.
5. A circuit according to claim 1, wherein the A/D convertor circuit further includes a transducer convertor for converting a resistance into a voltage to be converted by the A/D convertor circuit.
6. A circuit according to claim 1, wherein the A/D convertor circuit further includes a transducer convertor for converting a current into a voltage for conversion by the A/D convertor circuit.
7. A circuit according to claim 1, wherein the A/D convertor circuit further includes transducer convertors for converting both a current or a resistance into a voltage for conversion by the A/D convertor circuit, and selection means for selecting current, resistance or voltage sampling functions.
8. A data acquisition apparatus for converting an analog signal into a digital signal, the apparatus comprising:
*
an analog-to-digital circuit having a voltage reference input;
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal;
*
at least one transducer input coupled to the analog to digital circuit for receiving a corresponding at least one transducer signal; and
*
temperature compensation means for adjusting the uncompensated digital signals from the analog-to-digital conversion circuit to produce the digital signal, wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the data acquisition apparatus.
9. An apparatus according to claim 8, wherein the apparatus further includes an auto-zero circuit to further reduce affects of a system drift.
10. An apparatus according to claim 8, wherein the analog signal is a DC signal, wherein the apparatus further includes circuitry that is adapted to receive and convert DC signals.
11. An apparatus according to claim 8, wherein the at least one transducer input is selected from the group consisting of a voltage input, a current input and a resistance input.
12. An apparatus according to claim 11, wherein the at least one transducer input includes a transducer convertor for converting a resistance into a voltage to be converted by the analog-to-digital conversion circuit.
13. An apparatus according to claim 11, wherein the at least one transducer input includes a transducer convertor for converting a current into a voltage for conversion by the analog-to-digital conversion circuit.
14. An apparatus according to claim 8, wherein the at least one transducer input is a plurality of different transducer inputs, each different transducer input for receiving a corresponding different transducer signal, each different transducer input includes a transducer convertor for converting a voltage, current or a resistance into a voltage for conversion by the A/D convertor circuit, and selection means for selecting current, resistance or voltage sampling functions. | | Claims Count: 14 | Claims (English):
What is claimed is:
1. An A/D convertor circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog-to-digital conversion circuit that produces an uncompensated digital signal;
*
temperature compensation means for adjusting the uncompensated digital signal from the analog-to-digital conversion circuit to produce the digital signal; and
*
wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the A/D circuit; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the analog-to-digital circuit further includes a voltage reference input, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to approximate the full scale input range of the analog signal.
2. A circuit according to claim 1, wherein the A/D convertor circuit further includes an auto-zero circuit to further reduce affects of a system drift.
3. A circuit according to claim 1, wherein the analog signal is a DC signal, and wherein the A/D convertor circuit further includes circuitry that is adapted to receive and convert DC signals.
4. A circuit according to claim 1, wherein the A/D convertor circuit further includes a driver circuit to drive at least one analog transducer.
5. A circuit according to claim 1, wherein the A/D convertor circuit further includes a transducer convertor for converting a resistance into a voltage to be converted by the A/D convertor circuit.
6. A circuit according to claim 1, wherein the A/D convertor circuit further includes a transducer convertor for converting a current into a voltage for conversion by the A/D convertor circuit.
7. A circuit according to claim 1, wherein the A/D convertor circuit further includes transducer convertors for converting both a current or a resistance into a voltage for conversion by the A/D convertor circuit, and selection means for selecting current, resistance or voltage sampling functions.
8. A data acquisition apparatus for converting an analog signal into a digital signal, the apparatus comprising:
*
an analog-to-digital circuit having a voltage reference input;
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal;
*
at least one transducer input coupled to the analog to digital circuit for receiving a corresponding at least one transducer signal; and
*
temperature compensation means for adjusting the uncompensated digital signals from the analog-to-digital conversion circuit to produce the digital signal, wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the data acquisition apparatus.
9. An apparatus according to claim 8, wherein the apparatus further includes an auto-zero circuit to further reduce affects of a system drift.
10. An apparatus according to claim 8, wherein the analog signal is a DC signal, wherein the apparatus further includes circuitry that is adapted to receive and convert DC signals.
11. An apparatus according to claim 8, wherein the at least one transducer input is selected from the group consisting of a voltage input, a current input and a resistance input.
12. An apparatus according to claim 11, wherein the at least one transducer input includes a transducer convertor for converting a resistance into a voltage to be converted by the analog-to-digital conversion circuit.
13. An apparatus according to claim 11, wherein the at least one transducer input includes a transducer convertor for converting a current into a voltage for conversion by the analog-to-digital conversion circuit.
14. An apparatus according to claim 8, wherein the at least one transducer input is a plurality of different transducer inputs, each different transducer input for receiving a corresponding different transducer signal, each different transducer input includes a transducer convertor for converting a voltage, current or a resistance into a voltage for conversion by the A/D convertor circuit, and selection means for selecting current, resistance or voltage sampling functions. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An A/D convertor circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog-to-digital conversion circuit that produces an uncompensated digital signal;
*
temperature compensation means for adjusting the uncompensated digital signal from the analog-to-digital conversion circuit to produce the digital signal; and
*
wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the A/D circuit; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the analog-to-digital circuit further includes a voltage reference input, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to approximate the full scale input range of the analog signal. | Independent Claims:
1. An A/D convertor circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog-to-digital conversion circuit that produces an uncompensated digital signal;
*
temperature compensation means for adjusting the uncompensated digital signal from the analog-to-digital conversion circuit to produce the digital signal; and
*
wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the A/D circuit; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the analog-to-digital circuit further includes a voltage reference input, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to approximate the full scale input range of the analog signal.
8. A data acquisition apparatus for converting an analog signal into a digital signal, the apparatus comprising:
*
an analog-to-digital circuit having a voltage reference input;
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal, wherein the voltage reference source is coupled to the voltage reference input of the analog-to-digital circuit, wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal;
*
at least one transducer input coupled to the analog to digital circuit for receiving a corresponding at least one transducer signal; and
*
temperature compensation means for adjusting the uncompensated digital signals from the analog-to-digital conversion circuit to produce the digital signal, wherein the uncompensated digital signal is adjusted to compensate for variances due to the operating temperature of the data acquisition apparatus. | Description:
FIELD OF THE INVENTION
This invention relates to A/D converters and, in particular embodiments, an A/D converter system having an interface to a personal computer (PC) and an A/D converter circuit which uses a passively attenuated voltage reference. In preferred embodiments, the A/D converter circuits use a temperature compensation technique to passively reduce the effects of thermal drift and operating temperature, and in still further preferred embodiments the A/D converter circuits are combined with a plurality of transducer inputs to measure voltage, current and resistance input signals.
BACKGROUND OF THE INVENTION
Numerous types of analog-to-digital (A/D) conversion products are presently available. Many of these products are sold as bare circuit boards which allow incorporation of various different A/D chips and are used with a variety of data gathering platforms. Other products are sold as complete systems that can be connected to a personal computer (PC) and which then allow the user to collect data from a variety of sources. However, typical prior art products are deficient in their capability for low noise or substantially noise free operation, which inhibits their ability to adequately function in data acquisition systems for monitoring small DC voltage signals.
Some modern data acquisition systems interface directly with a PC. This allows for the efficient display and processing of the results, often in real time (or just a few milliseconds delay from true real time). The PC also provides a convenient way to store the large volumes of data, obtained from measurements, for later post-processing analysis.
Data acquisition systems typically combine input circuitry with an analog-to-digital converter (ADC) chip. Generally, the input circuitry of such systems receive input signals from a variety of transducers and the ADC produces digital outputs proportional to the varying level of the voltage of the input signals. ADCs typically have a full scale input voltage range of .+-.2.5 to .+-.5 V. To process a small DC voltage signal (i.e., a signal significantly less than the full scale input of the ADC), traditional systems typically employ one or more signal amplifiers to increase the small input voltage signal to correspondingly match the full scale voltage input range of the ADC chip. One drawback to this approach is that the amplification process introduces additional errors (i.e., noise) into the analog signal being amplified. Another common source of error and noise is the use of a multiplexer to sample several different analog inputs with a single ADC chip. This causes noise and spurious signal offsets due to the capacitive charge injection caused by switching between different wires containing the different analog inputs (e.g., often this noise plus offset is on the order of 10 mV peak to peak; see also FIG. 10) and can prevent the accurate measurement of small signals.
If the amplification is done correctly, then the full scale output of the amplified signal will match the full scale input in the A/D converter or at least use a significant portion of the ADC's full scale input voltage range. Therefore, amplification enables a user to view small signals with high resolution, since "extra bits" are added to the resolution. Thus, amplification of a .+-.0.5 V signal to a .+-.5.0 V signal which is converted in a .+-.5. 0 V full scale ADC provides a 10 time increase in resolution.
Although the small input signals are typically filtered prior to amplification in an attempt to reduce the amount of noise that will be amplified, these errors cannot be totally eliminated; and they are amplified along with the signal. Moreover, the amplification process itself adds noise to the signal and measurement uncertainty. Therefore, as the signal is amplified to increase the resolution during a conversion process, more noise or uncertainty is added to the signal. This tends to make it more difficult to accurately process small signals and adds uncertainty to the resulting digital output.
A typical "error-budget" for a small transducer signal (or measurement signal), which is amplified to match the full scale input range of an A/D converter chip ("Signal.sub.atA/D ") in a general PC-based A/D converter system, is a follows:
1. the transducer's signal or real measurement (Signal.sub. Device ");
2. the transducer's inherent, self-generated noise (Noise.sub. Device ");
3. environmental noise which radiates into the shielded and unshielded wire leads that connect the transducer to the amplifier ("Noise.sub. AmpLeads ");
4. environmental noise which radiates into the shielded and unshielded wire leads that connect the amplifier to the A/D input ("Noise. sub. A/DLeads ");
5. noise from the internal components that make up the amplifier ("Noise.sub.AmpInt ");
6. noise from the external components that make up the amplifier ("Noise.sub.AmpExt ");
7. span errors from temperature induced drift that affect the amplifier's internal gain stage ("Gain.sub.AmpInt ");
8. span errors from temperature induced drift that affect the amplifier's gain through the external components ("Gain.sub.AmpExt ");
9. input offsets in the amplifier which are multiplied by the gain ("Offset.sub.AmpInput ");
10. output offsets in the amplifier which are constants ("Offset. sub. AmpOutput "); and
11. spurious signal errors due to multiplexing several analog inputs which have differing line capacitances and other sources of errors ("Signal.sub.Spurious ").
This error budget yields the following equation for the signal received at the input to the A/D chip: ##EQU1## where the Gain.sub.Ideal equals the amplifier's desired gain multiplier. Depending upon the actual circuit being evaluated, the Signal.sub.Spurious term may or may not be multiplied by the cumulative gain of the three Gain terms.
This Signal.sub.atA/D leads to the following equation for the resulting output resolution for the signal:
Number of Bit-counts from the A/D as a Digital Output= .+-. Integer[(Signal.sub.atA/D /V.sub.ref) ×2.sup.n ]
Where n=the number of bits of resolution
The above-described error budget is not the only source of errors. Additional measurement errors in the output signal are caused by the A/D convertor's voltage reference circuitry. Generally, A/D circuits use a voltage reference ("V.sub.ref ") signal to set the full-scale input of the ADC chip. The ADCs use a variety of comparison techniques to arrive at the number of bit-counts a signal value represents when compared to the full scale represented by the value of V.sub.ref. The V. sub.ref is assumed to represent the maximum number of bits in the ADC. For example, if the voltage reference is 100 and the Signal.sub.atA/D is 95; then the bit count in an 18 bit ADC is 249,036; on the other hand, if the Voltage reference is actually 101, then the bit count should be 246, 571---an error of 2,465. Therefore, small errors in the V.sub. ref result in errors in the digital output signal.
The affects of all these errors on the conversion of a small signal from analog to digital can be demonstrated through some simple tests. One such test measures the noise present in an A/D circuit when there is a zero voltage level input applied to the ADC. This is called a "zero voltage level noise test. " To perform the test for an actual real world application, the leads connecting the sensor to the PC based A/D circuit are disconnected and the positive and negative leads are tied together so that there is no voltage differential between them. Specifically, the leads are tied together as close to the sensor and as far from the PC as possible. This is because most sensors are located a distance from the PC in real world applications to prevent noise from the PC containing the A/D circuit from radiating into the sensor setup. Often the lead length distances are on the order of 6 to 20 feet or more. Typically, shielded cable is used with the shield tied to analog ground. Theoretically the results of this test should yield zero volts because any noise which radiates into the shielded cable or any capacitive effects on the cables in this zero voltage level noise test would be canceled out via the differential inputs, since the positive and negative sides of the ADC input see the same input voltages induced by the noise.
Most manufacturers perform a different version of this test, and the results of this alternate version of the test are often far better than the results achievable in the real world test described above. In the alternate version of this test, the manufacturer shorts the input pins of the ADC chip together as close as possible to the ADC chip, not as close as possible to the sensor or area of actual usage. Usually, the lead length is only a few inches long or even less than one inch for this test. This short lead length is usually comprised of the metallic traces on the actual printed circuit board to which the ADC chip is mounted and terminates at the connector mounted on the same printed circuit board. In the event that a multiplexer is present to sample several analog inputs to a single ADC chip, the short lead length also substantially reduces the effects of the line capacitance. Since the input signal is essentially 0 volts, the charge injection problem is minimized and a very good sounding specification may placed on the equipment. Therefore, since no user can directly connect a device to the ADC circuit boards under the same conditions, and a circuit specification is determined for the system that has no bearing in the real world.
A typical real world input voltage test result is shown in FIG. 10. The results were generated by a conventional Analogic Corp. (Peabody, Mass.) High Speed DAS 16-bit analog-to-digital data collection board (Part No. HSDAS-16). The board is specified as having a resolution of 38 . mu.V (or 38×10.sup.-6 V) and is purported to have the capability to take accurate readings below 1 mV (or 1000×10.sup.-6 V). The board's specification also purports to have a maximum noise level of 76 . mu.V. However, in the test represented by FIG. 10, the product exhibited an inherent noise and offset of about 250-1000 μV RMS, and the peak-to-peak noise level often exceeded 10 mV. The larger peaks were the result of a multiplexer charge injection as different channels were scanned. During the test, the nominal on-board amplifier gain was set to 4.0 and approximately 6-8 feet of cable length was present between the area where the leads were tied together and the ADC chip on the printed circuit board. This long lead length was necessary because the PC radiates environmental noise that could be detected by the transducer to be used in this particular test setup. Also, this test setup involved the use of fluids and it was desirable to have the PC as far away as possible from the source of a potential spill or leak. The readings on eight differential inputs were scanned during this test.
In traditional ADC circuits, such as the HSDAS-16, the multiplexer is used to alternately measure several different analog voltage sources using a single ADC chip. The multiplexer also helps to protect the ADC chip from high voltages, such as a static discharge, that might damage the ADC chip.
Low pass filtering can help to smooth out the noise, but it does not have a significant affect on the offsets or uncertainty in the readings. The plot in FIG. 10 shows the results in only one channel, but each tested channel had a similar output curve with the only difference being the amount of the offset voltage errors.
Another test which can be performed is called a "fixed response transducer test". In this test, a pressure transducer is surrounded by a shielded, grounded metal case which is connected to the A/D data acquisition system. The pressure transducer is then given a thermally stable fixed head height of input pressure from a static column of water at room temperature. The thermal mass of the fluid is sufficient to prevent any measurable thermal drift in the sensor over a 1 to 10 minute test period. The fluid temperature during the test is monitored with a thermistor to within 0.1° C. The output of the transducer is then measured for noise. It is assumed that offsets and span errors cannot be measured with certainty, but they will still be within the transducer data. Tests performed on the Analogic system described above, yielded results which are quite similar to those shown in FIG. 10, but at a baseline voltage closer to the full scale analog signal from the pressure transducer (i.e., about 100 mV).
In many fields, computerized data acquisition has not been adequate, since low noise, high precision measurements that have a traceability to National standards, such as those set by the National Institute of Standards and Technology (NIST) and the like, are required. In typical prior art systems, to compensate for noise, the measurements are usually taken at lower sample rates to integrate or average out the environmental electronic noise, such that the required quality of measurement is provided. However, this does not remove all potential sources of error. For example, temperature has the ability to effect the accuracy of voltage, resistance and current readings at the μV, μ Ohm and μA levels. These effects are most prominent when the measurement requires an accuracy of a few microvolts. One solution to the temperature problem has been to provide a controlled environment, and actively heat the reference voltage source and critical components to maintain a fixed value above the ambient temperature (i.e., about 30. degree. C.). However, this requires additional circuitry which tends to increase the complexity of the system. Moreover, this technique fails when the ambient temperature rises above the heated, controlled environment or when the temperature drops too low for the heater to maintain the controlled environment. Furthermore, the accuracy of this technique can change with time, as the active heating elements drift to different temperature values.
SUMMARY OF THE DISCLOSURE
It is an object of an embodiment of the present invention to provide an improved analog to digital converter circuit, such as for use with small signals and the like, and which obviates for practical purposes, the above mentioned real world limitations. In particular embodiments the improved analog to digital convertor circuit uses a passively provided voltage reference signal to substantially eliminate noise in the conversion from an analog to a digital signal.
According to an embodiment of the invention, an A/D converter circuit is used to convert an analog signal into a substantially noise free digital signal. The circuit includes a low noise analog-to-digital conversion chip (ADC) and a passive voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two diode terminals to provide a voltage reference signal for use by the ADC. The ADC uses the voltage reference signal to set the full scale input range used in the conversion operation. In preferred embodiments, the voltage reference signal is attenuated to closely match or correspond to the full scale input range of the analog signal. Moreover, the circuit is particularly well suited to measure small DC voltage signals.
In further embodiments of the present invention, the passive attenuation circuit defines a resistor in a resistor and capacitor network. The resistor and capacitor network may provide a single pole low pass filter to attenuate high frequency noise in the reference voltage measurement. Moreover, the ADC may be capable of performing an auto-zero to reduce effects of a system drift.
In still further embodiments, the A/D converter circuit may include a multiplexer chip coupled with filter networks to selectively filter the analog signal prior to sending the filtered signal to the ADC for conversion from an analog to digital signal. Moreover, the A/D convertor circuit may include current output circuitry (i.e, drivers) and connections which can be used to drive analog transducers. In preferred embodiments, an A/D convertor circuit has a power source that is remotely located relative to the ADC to reduce the noise interference from the power source.
In further preferred embodiments of the present invention, the A/D converter circuit utilizes a passive temperature compensation feature to substantially eliminate or reduce the effects of thermal drift and of operating at different temperatures. In particular embodiments, the A/D converter circuit is calibrated at various temperature levels to derive a table or a set of equations that are used to passively adjust the digital signal output from the A/D converter circuit. In further embodiments, the A/D converter circuit is coupled to a plurality of transducer inputs, such that the A/D converter circuit can sample voltage, current and resistance input signals.
In particular embodiments of the present invention, the A/D converter circuit is included in an A/D converting system. The A/D converting system converts an analog signal into a digital signal while minimizing noise. The system includes an interface circuit and an A/D convertor circuit, as described above, coupled to the interface circuit. Preferably, the system provides means for selecting the level of attenuation of the voltage reference signal provided by the passive attenuation circuit. In traditionally designed A/D converting systems, the total system noise is typically less than about 10 mV peak-to-peak. However, in the preferred embodiments the total system noise is typically less than about 10 μV peak-to-peak or an improvement by a factor of about 1000.
In further system embodiments, the interface can accommodate a plurality of (e.g., eight) A/D converter circuits. Further the interface circuit may be cascaded together with at least one additional interface circuit. Moreover, in preferred embodiments the interface circuit may be cascaded with as many as thirty two other interface circuits, such that as many as, for example, 256 A/D converter circuits may be supported.
In other embodiments, there is no interface circuit and the A/D convertor circuits are directly connected to a personal computer in parallel with at least one other A/D convertor circuit. However, in preferred embodiments, the system uses a personal computer connected to the interface circuit, and wherein the personal computer is used to control and drive the A/D converting system through the interface circuit.
Other features and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, various features of embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description of embodiments of the invention will be made with reference to the accompanying drawings, wherein like numerals designate corresponding parts in the several figures.
FIG. 1 is a block diagram of an A/D conversion system according to a first embodiment of the present invention.
FIG. 2 is a block diagram of an A/D conversion system according to a second embodiment of the present invention.
FIG. 3 is a block diagram of a variation of the second embodiments shown in FIGS. 2 and 3.
FIG. 4 is a block diagram of the interface unit used in the embodiment shown in FIG. 2.
FIGS. 5(a)-(d) illustrate a detailed circuit schematic of the interface unit shown in FIG. 4.
FIG. 6 is a block diagram of the A/D pods shown in the embodiments of FIGS. 1-3.
FIG. 7 is a circuit diagram of the voltage reference source illustrated in FIG. 6.
FIGS. 8(a)-(c) illustrate a detailed circuit schematic of the A/D pod shown in FIG. 6.
FIG. 9 is a plot of noise levels in an A/D convertor system according to an embodiment of the present invention.
FIG. 10 is a plot of noise levels in a prior art A/D convertor system.
FIG. 11 is a block diagram of a second embodiment of the A/D pod shown in FIG. 6.
FIG. 12 is a flow diagram illustrating a temperature calibration method used for calibrating an A/D pod as shown in FIG. 11.
FIG. 13 is a flow diagram illustrating a temperature compensation method for passively compensating for the temperature of an A/D pod as shown in FIG. 11.
FIG. 14 is a block diagram of a multiple input data acquisition device utilizing an A/D pod as shown in FIG. 6 or FIG. 11.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Preferred embodiments of the present invention, relate to an A/D converter system used for measuring low level electrical signals in sensitive electronic apparatus, such as medical monitoring devices, seismic activity monitoring devices or the like. Commonly, these low level signals are generated by various forms of strain gauges or piezo-resistive transducers. However, further embodiments of the invention may be used to measure other types of signals which are converted from analog to digital signals. The A/D converter systems according to embodiments of the present invention are particularly well suited for sensitive measurements which present the user with a low signal to noise ratio.
Embodiments of the present invention are based in part on the principle that system noise may be minimized by reducing the number of noise inducing circuit components, especially active components, such as an amplifier or the like. Thus, embodiments of the present invention eliminate the amplifiers commonly used in A/D convertors to amplify the small input signal, and instead have an A/D circuit that will accept a low level signal directly. Moreover, since there are only a small number of ICs and discrete components in the low level signal path, thermally-induced junction voltage errors are minimized.
Further embodiments include such features as a software selectable filtering of the input signal, an on-board constant current source, jumper bridges to allow selectable full scale input ranges for the V.sub. ref, and overvoltage protection for the analog inputs. Moreover, the entire A/D converter and data acquisition circuit may be compact in size which allows it to be readily disposed in remote locations and to interface externally with a host processor (i.e., a PC) via serial or parallel data links. Thus, the A/D converter circuit may be positioned close to the transducer sensor, to minimize the length of the electrical connection (e.g., cable) between the A/D converter circuit and the transducer sensor, and therefore minimize the noise induced in the electrical connection.
Still further embodiments use a passive temperature compensation feature to substantially reduce or eliminate the effects of temperature drift or operating at different temperatures. In preferred embodiments, a table or a set of equations is used to determine the coefficients for altering the digital signal output from the A/D converting circuit. Moreover, other embodiments include a plurality of different transducer inputs that are coupled to the A/D converter circuit to sample voltage, current and resistance input signals. In preferred embodiments, the current and resistance input signals are converted to voltage signals that are digitized by the A/D converting circuit.
Preferably, the A/D converter hardware is designed to readily connect to a standard PC serial port (known as RS-232 by most computer users) for transmitting data to the PC which provides data acquisition control and analysis functions. Thus, no special adapter cards have to be installed in the PC. Moreover, the use of the standard serial port allows the PC to be located a great distance from the ADC circuit and the transducer whose analog signal is being measured.
In the illustrated embodiments, remotely located A/D data acquisition circuits (A/D pods) perform the conversion of an analog signal to a digital signal. In some embodiments, as many as eight A/D pods may be connected to a microprocessor controlled interface circuit which obtains the data from each A/D pod. The A/D pod may be used in a freestanding manner or it may be a subsystem within a PC-based data acquisition system. When the A/D pod is connected to a PC, the data can be readily viewed and recorded in real time (or near real time). Also, the data may be analyzed or manipulated in real time (or near real time) for use by other instruments or equipment.
Certain embodiments of the invention are particularly suitable as a "test and measurement" instrument for engineers and scientists working with low level DC electrical signals (i.e., under 0.5 V), such as from pressure sensors, strain gages, or chromatography equipment. The A/D pod may also be incorporated directly into medical devices designed for processing very small physiological signals. Embodiments of the A/D pod system may be particularly well suited for providing a low noise reading from a medical pressure sensor used in a hospital or home health care environment, both of which are typically electrically noisy environments. In this type of real world application, the A/D pod must measure unamplified differential DC voltages of approximately 300 μV (or about 300×10.sup.-6 V) to an accuracy better than 1% or about 3 . mu.V. Moreover, this type of differential signal is often superimposed on a DC signal that varies from about 1.0-200.0 mV. Therefore, the A/D pod should have a measurement resolution of 3 ppm (parts per million). To achieve high accuracy with reasonable levels of certainty, it is necessary to measure a raw signal with a less than 1.0 . mu.V resolution. Currently available PC based systems as described in the background section are inadequate for providing such measurements unless the analog signal is highly amplified, and then the signal is subject to the error factors discussed above.
FIG. 1 shows an A/D converter system 10 according to an embodiment of the present invention. This system includes a PC 12 coupled to two A/D pods 14 by data lines 16. In this embodiment, the PC is equipped with a parallel input/output (PIO) card, such as the Universal Digital I/O Interface (Model No. D-MAX54DIO48) sold by Personal Computing Tools, Inc. (Campbell, Calif.). The system 10 is capable of parallel processing the data from the two A/D pods 14 without an external auxiliary interface circuit. The A/D pods 14 interface directly with the PC 12 using line 16 connected to standard RJ-45 8 pin ports on the A/D pods 14 and the screw terminals on the PIO card within the PC 12. This parallel configuration allows the user to take as many as two measurements in real time for direct comparison of the results. In operation the A/D pods convert measurements from transducers (not shown) into digital signals which are then sent to the PC 12 for further processing and display. The received data can then be stored on the PC 12 for later access and/or post processing. In this embodiment, control command signals are supplied directly by the PC 12 to A/D pods 14 over lines 16. Power is provided by an external power supply. This embodiment may be currently limited to two parallel A/D pods 14 by the number of signal lines on the PIO card. However, PIO cards with more digital lines may accept more A/D pods 14.
A second embodiment of an A/D converter system is shown at reference numeral 20 in FIG. 2. The A/D convertor system 20 is composed of a PC 12, an interface unit 22 and a plurality (e.g., up to eight) A/D pods 14. The interface 22 is serially coupled to the PC 12 through line 24 using a RS-232 standard 9 pin port, and the A/D pods 14 are serially coupled to the interface 22 by lines 26 using a standard RJ-45 8 pin ports found on both the A/D pods 14 and the interface unit 22 circuit board. The interface unit 22 receives data from each of the A/D pods 14, and then forwards the received data to the PC 12 for processing over lines 24. As in the first embodiment, described above, the PC 12 can display and store the data for post processing.
The PC 12 is controlled by a host software program "TVIHOST" to communicate with the interface unit 22 and the A/D pods 14. A hard copy of a preferred embodiment of the TVIHOST program is attached as Appendix A as an example. However, further embodiments may employ other suitable programs. Preferably, the program controls the PC 12 to provide command signals to the interface unit 22 which then translates and passes command signals on to the appropriately selected A/D pods 14. The program also controls storage operations for storing of the collected data on suitable storage media, such as magnetic disks or the like, for later analysis of the data, as well as real time waveform and/or numeric displays. For instance, if a numeric display mode is selected, a 1-second mean and RMS noise levels are computed and displayed in real time. The TVIHOST program generally collects and stores the data in a binary format for quicker processing and later access. However, this format is not generally compatible with spreadsheets or other analysis software. Therefore, the TVIHOST program preferably includes a second program, EXP, which may be used to translate binary data into several different standard tabular formats which are easily imported into commercially available PC-based spreadsheet programs.
The interface unit 22 is the gateway between the PC 12 and the A/D pods 14. The interface unit 22 handles and translates all commands from the PC 12. Thus, a standard PC 12 only requires a standard, built in RS-232 serial port and the software to access the interface and the A/D pods; no additional hardware is required. All time critical interfaces to the A/D pods 14, such as when to send data and receive commands, are handled by the interface unit 22. Moreover, the interface unit 22 supplies the power to the A/D pods 14. The interface unit 22 also handles other functions, for example, commanding an automatic zero level compensation that reduces the noise from thermal drift. It should be understood that the A/D pods 14 are not limited to use with the interface unit 22 of the present embodiment, but may be used with any suitable PC or interface.
FIG. 3 illustrates a third embodiment, which is a variation of the embodiment shown in FIG. 2. This system 30 has a plurality of interface units 22 that are serially cascaded together by lines 32 using standard RS-232 9 pin ports. It is possible to cascade a first plurality X (e.g., as many as thirty two) of separate interface units 22; and since each interface unit 22 can support a second plurality Y (e.g., up to eight) of separate A/D pods 14, the cascaded system 30 may monitor as many as X * Y (e.g., up to 256) individual A/D pods 14 using one PC 12. The first interface unit 22 in the cascade is connected by an RS-232 line 24 in the same manner as shown in FIG. 2. Each additional interface unit 22 is connected to an adjoining interface unit 22 by an RS-232 line 32. The cascade system 30 uses the same TVIHOST program described above, to allow the PC 12 to communicate with the multiple interfaces 22 and all of the connected A/D pods 14. Therefore, the A/D converter system 30 may be readily expanded as measurement needs grow.
FIG. 4 shows a block diagram of the interface unit 22 used in the embodiments illustrated in FIGS. 2 and 3. The interface unit 22 has a power supply 40, an interface control 42, and an A/D control 44. The power supply 40 provides the +5.0 V power for both the interface unit 22 and all attached A/D pods 14. The ability to supply power to the interface control 42 and the A/D pods 14 from the power supply 40 provides several advantages, including the advantage of minimizing the number of individual power sources required, and the advantage of avoiding a major source of environmental noise (the power supply), since the power supply is external to the remote A/D pod 14. However, it should be recognized that further embodiments of the interface unit 22 may provide other power levels, and the A/D pods 14 may be powered by an internal source rather than externally powered.
The interface control 42 interfaces with the host PC 12 through a host port 46, and to other cascaded interface units 22 through a cascade port 48. Ports 46 and 48 are standard RS-232 9 pin serial ports. The interface control 42 includes a programmed processor circuit (e.g., controlled by a program recorded in a ROM device) which allows the interface unit 22 to prioritize itself among the other cascaded units 22 and to properly time the delivery of data to the PC 12. Moreover, the interface control 42 functions as a translator which receives command signals from the PC 12 and converts them into command signals for the A/D pods 14. Because these timing and translating functions are performed by the interface 22, the individual A/D pods 14 may be relatively simple in construction and small in size.
The interface control 42 is responsible for sending the data received from the A/D pods 14 to the PC 12. Typically, the data is sent to the PC 12 as a differential digital signal, since this reduces the amount of information that must be sent and allows higher communication rates. The differential digital signal only transfers the lowest number of bits which have changed since the last analog-to-digital conversion. However, it should be recognized that, according to further embodiments and as a user selectable option in the TVIHOST software, the entire digital signals provided by the A/D pods 14 may be sent to the PC 12.
The A/D pods 14 are controlled by the A/D control 44 through interface ports 50. The interface unit 22 has eight RJ-45 standard 8 pin connector ports 50, and the A/D pods may be connected into any one of the ports 50 or in any order. The interface unit 22, through the A/D control 44, prioritizes and handles all communications to the A/D pods 14. The A/D control 44 communicates with the A/D pods to control filter methods, system timing and other measurement parameters. The A/D control 44 receives data from the individual pods 14 and then sends the data to the interface control 42 which translates the data into a differential digital signal to be sent to the PC 12.
FIGS. 5(a)-5(d) show a detailed circuit schematic of a preferred embodiment of an interface unit 22. The illustrated interface unit 22 uses a Z-World Engineering Inc. (Davis, Calif.) single board computer, known as the model SmartBlock. This computer board uses a Z80 18.6 Mhz microprocessor to translate and process the command signals and data transfer between the A/D pods 14 and the PC 12. The ROM device containing the interface unit 22 instruction set is mounted on the single board computer.
FIG. 6 shows a block diagram of an A/D pod 14 which may be used in the embodiments shown in FIGS. 1-3. The A/D pod 14 includes an interface unit I/O (Input/Output) 60, an ADC (Analog-to-Digital Chip) 62, a V.sub.ref (Voltage reference) source 64, a multiplexer 66 with filters, and a transducer input 68.
The interface unit I/O 60 supports communication with the interface unit 22. The I/O 60 uses an RJ-45 8 pin port to receive command signals from the PC 12 through the interface unit 22. The received command signals are used to control the A/D pods timing and how the A/D pod 14 will filter and convert the analog signal received from the transducer input 68 to a digital signal. Moreover, the I/O 60 receives a power signal and provides power to the A/D pod 14. The I/O 60 is connected to the ADC 62 which is used to control the other blocks in the A/D pod 14.
The ADC 62 receives command signals from the I/O 60, and provides command signals to control the multiplexer 66. The command signals from the ADC 62 determine which filters connected to the multiplexer 66 are used in processing the analog signal before conversion to a digital signal. The full scale input range to the ADC 62 is set by the V.sub.ref provided by the V.sub.ref source 64. Once the full scale input range is set, the filtered output signal from the multiplexer 66 is compared with the V.sub.ref signal and the ADC 62 produces a digitized signal based upon this comparison. The digitized signal is then sent by the ADC 62 to the interface unit I/O 60 where it is sent back to the PC 12 for display and further processing. In the preferred embodiments, the ADC 62 continuously converts the analog signal into a digital signal, and the interface unit 22 only transmits the digital signal to the PC 12 when a new update is required by the PC 12. This method tends to lighten the communication load and further simplify the design of the A/D pod 14. However, in other embodiments, the ADC 62 need not convert the signal continuously, and the user may select nearly any conversion rate slower than 16 times per second.
The transducer input 68 to the A/D pod 14 is used to receive the analog signal from the transducer (not shown) and provides the signal to the multiplexer 66 for filtering. In some embodiments of the present invention, the A/D pod 14 may be provided with a constant current source which can be used to power and drive the transducer. This can simplify the construction and cost of systems which use transducers with the A/D pods 14. However, the transducer may be internally powered or powered by a source other than the A/D pod 14. Other embodiments of the A/D pod 14 may include a constant voltage source or other suitable driver which can be used to power and drive other transducers.
The multiplexer 66 receives the analog signal from the transducer input 68 and filters the information prior to sending the analog signal to the ADC 62. In preferred embodiments of the present invention, the multiplexer has four filtering options. However, the multiplexer may utilize any number of filters and more than one multiplexer may be used. In addition to filtering, the multiplexer provides protection to the input terminals of the ADC chip from high voltages such as a static discharge.
The full scale input range of the ADC 62 is determined by the V. sub. ref signal which is produced by the V.sub.ref source 64. In preferred embodiments of the present invention, the V.sub.ref source 64 is a precision source that does not use active elements, such as an amplifier or a power supply, to generate the V.sub.ref voltage reference signal. Rather, the V.sub.ref is generated by a diode and passively attenuated to form an input range that closely matches the full scale input range of the unamplified analog signal. This removes a substantial portion of the noise sources that are found in the prior art A/D convertor circuits which utilize amplifiers to create a gain stage for the analog signal. Thus, the use of a V.sub.ref that is passively attenuated can provide significant advantages over the prior art systems discussed in the background section, in that this feature can result in a substantial reduction of noise in the converted signal.
FIG. 7 shows a circuit schematic of an embodiment of the V.sub. ref source 64 used by the A/D pod 14. The V.sub.ref source 64 does not use an amplification circuit to determine the full scale input range used by the ADC 62 (see FIG. 6). Rather, it is attenuated to match the range of the small analog signal. To provide the V.sub.ref, the power from an external source, such as the interface unit 22, is attenuated through a first resistor 70. One end of the resistor 70 is coupled to the power source and the other is coupled to a diode 72 and a passive attenuation circuit 74. The passive attenuation circuit 74 is coupled in parallel to the ends of the diode 72. Typically, the passive attenuation network is formed of one or more resistors 76 and one or more capacitors 78 connected in parallel, as shown in FIG. 7. In preferred embodiments, a precision zener diode is used with a resistor chip and a capacitor. However, the circuit may use any suitable diode or resistor which provides the proper level of attenuation. The passive attenuation circuit may also include a capacitor to form a single pole, low pass filter to reduce high frequency noise (e. g., greater than 32 Hz). In preferred embodiments of the present invention, the V.sub.ref is attenuated to provide a full scale input range of .+-.200 mV to .+-.500 mV which provides a resolution of approximately 0.763 μV to 1.907 μ V per count of the A/D converter.
FIGS. 8(a)-8(c) show a detailed circuit schematic of a preferred embodiment of the A/D pod 14. With regard to the analog-to-digital converter chip, the MAX132 converter chip (shown as U1 in FIG. 8(a) and manufactured by Maxim Corporation of Sunnyvale, Calif.) was selected. A MAX132 circuit provided a full scale input of about .+-.200 mV to .+-. 500 mV with good noise and drift levels. The ADC also incorporates features which eliminate 60 Hz noise sources from the acquired signal through an averaging technique. The A/D converting circuit also uses a multiplexer chip MAX359 (shown as U2 in FIG. 8(c)) to provide four analog signal filtering options of no signal filtering, 0.08 Hz, 0.8 Hz and 8 Hz. The filters are selected by pins P0 and P1 on the ADC. Finally the V.sub. ref source is shown in FIG. 8(b) using a zener diode (shown as D1) and a resistor chip (shown as R3) to provide the attenuated voltage reference. It should be understood that other diodes, and resistor and capacitor combinations may be used. By changing these components V.sub. ref signals of up to 1.2 V and 2.5 V are readily achievable. For instance, other jumper pad connections on the resistor chip may be used to obtain different V.sub. ref signals. In further embodiments, the jumper pads may be user selectable to provide a selectable V.sub.ref signal attenuation; however, this would probably require an additional multiplexer to facilitate the selection of the appropriate jumper positions and possibly the selection of a different integrating capacitor and resistor, depending on the range selected.
There are several advantages obtainable with a passively attenuated V. sub.ref. There is a reduction in the number of components needed to generate the digital signal, since neither the analog signal nor the V. sub.ref must be amplified. Therefore, the noise that would otherwise be generated by these additional components is not present and the system would exhibit a reduced (compared to signal amplifying systems) sensitivity to temperature drift due to the minimization of components, and thus error sources. Moreover, since amplifiers are not needed to provide the V.sub.ref or amplify the analog signal, the noise sources created by the amplification process may be completely eliminated. The result is less noise at the inputs of the ADC chip.
The A/D pod 14 is also externally powered, which can significantly reduce the noise in the resulting digital signal. The external power source permits the A/D pod to be located outside the noise filled environment within the PC 12 which may otherwise interfere with the ADC and other components of the A/D pod 14. Moreover, external powering allows the A/D pod 14 to be packaged in a small configuration and be located close to the transducer where the actual measurements are taken. Close proximity to the transducer reduces the line length between the ADC and the transducer. Thus, the ability to locate the ADC in a minimum noise environment and in close proximity to the measurement source can minimize the noise input to the ADC 62.
Therefore, embodiments of the present invention using a passively attenuated V.sub.ref and external power source yield the following equation for the signal at the A/D:
Signal.sub.atA/D =Signal.sub.Device .+-.Noise.sub.Device .+-. < 0.1 Noise.sub.A/DLeads
It can be readily appreciated that the above-equation has far fewer noise terms than the equation for the A/D converters in the prior art structures described in the background section.
Typical noise levels obtained in the above-described embodiments of the present invention are in the range of 4 μV RMS. The same tests, described in the background of the invention above, were performed on various embodiments of the present invention. The results showed that the circuits reduced the noise and offset problems found in real world applications of the prior art devices by a factor of 100 to 1000 times. A sample of the results from a zero level test are shown in FIG. 11. The combined noise and offset errors were reduced to under 5 μV RMS and about 8 μV peak-to-peak over long sampling periods. However, during shorter test periods, the results were even better (about 2≧3 μ V RMS and about 3≧4 μV peak-to-peak).
Comparisons of the two noise plots in FIGS. 9 and 10 show that embodiments of the present invention exhibit significantly less noise than converter systems in the prior art. For example, if FIG. 9 were superimposed on FIG. 10 using the same vertical scale, the noise in the FIG. 9 plot would be a thinner line than can be printed on FIG. 10. This is because FIG. 10 shows noise in millivolts and FIG. 9 shows noise in microvolts (a difference of 1000 times).
FIG. 11 shows a second embodiment of the A/D pod 114, which is similar in some respects to the A/D pod 14 shown in FIG. 6. This A/D pod 114, like the A/D pod 14, includes an interface unit I/O (Input/Output) 60, ADC (Analog-to-Digital Chip) 62, V.sub.ref (Voltage reference) source 64, multiplexer and filters 66 and transducer input 68 as described above. However, the A/D pod 114 further includes a CPU with built-in RAM 116, a ROM 118 and a temperature sensor 120 to provide passive temperature compensation of the digital signal output from the ADC 62. Using the passive temperature compensation method described below, the A/D pod 114 is capable of making accurate measurements below 1.0 μV (1×10. sup.-6 Volts). The passive temperature compensation method, described below, can be used because the A/D pod 114's circuitry functions in a repeatable manner at any given temperature within the operating range of the A/D pod 114. This allows the digital signal output by the A/D pod 114 to be adjusted in real time, strictly on the basis of temperature, without active monitoring of the output from the A/D pod 114.
In the illustrated embodiment, the A/D pod 114 provides traceability to standards, such as NIST or the like, and is operable over a broad range of temperatures. In preferred embodiments, the operable temperature ranges from 0° C. to +95° C. However, in other embodiments, the temperature range may be larger or smaller. Thus, the A/D pod 114 is capable of producing the accuracy and precision of a .+-. 10 ppm (part per million) calibration standard over a wide range of operating temperatures. Moreover, the A/D pod 114 may use a temperature compensation feature as described below and shown in FIG. 13. Alternatively, it may function as the above-described A/D pod 14, if the CPU 116 is commanded to send the digital signal output from the ADC 62 to the interface unit I/O 60 without alteration.
In the A/D pod 114, the CPU 116 receives the digitized signal output from the ADC 62, and is controlled by software stored in the ROM 118 to calculate an adjustment coefficient. Based on the temperature measurement from the temperature sensor 120, the CPU 116 then uses the calculated coefficient to passively adjust (i.e., without monitoring the output of the ADC 62) the value of the digital signal from the ADC 62 in real time. The digital signal may be altered up or down, depending on the individual characteristics of each A/D pod 114. Once the digital signal has been adjusted to compensate for the effects of temperature, the CPU 116 directs the signal to the interface I/O 60, where it is processed as described above for the A/D pod 14 shown in FIG. 6.
The ROM 118 stores a set of equations to determine the adjustment coefficient based on temperature. The equations are determined from a calibration method (such as illustrated in FIG. 12 and described below). In preferred embodiments, the equations are in the form of a linear slope and intercept that are based on temperature. These equations permit the digital signal to be adjusted to compensate for temperature changes in increments of 0.1° C. However, in other embodiments, the equations may be curves, or may be a plurality of equations representing different portions of the operating temperature range of the A/D pod 114. Moreover, in still other embodiments, larger or smaller temperature increments may be used. In alternative embodiments, the ROM 118 may contain an interpolation table of data that is used, instead of a set of equations, to adjust the digital signal from the ADC 62. The ROM 118 also contains the software that is used to determine the adjustment coefficient. For example, the software includes instructions for: determining how often temperature measurements are taken, how the coefficient is calculated, how the digital signal from the ADC 62 is altered, and the like.
FIG. 12 shows a flow chart representing one embodiment of a calibration method used to calibrate the A/D pod 114 shown in FIG. 11. A hard copy of a preferred embodiment of the "TEMPCAL" program, which can perform the calibration method, is attached as Appendix B as an example. The calibration method is used to produce the table or equations that are stored in the ROM 118, and used by the CPU 116 to passively adjust the digital signal output from the ADC 62 to compensate for changes in temperature. In step 150, prior to performing the remaining calibration method steps, the A/D pod 114 is placed in a temperature controllable environment, such as a temperature chamber, oven or cooler, and attached to a data acquisition device, such as a processor, personal computer (PC) or the like. The A/D pod 114 is also attached to a power supply and an input device capable of providing known input reference signals that are calibrated to a standard, such as NIST or the like. In preferred embodiments, more than one A/D pod 114 is attached to the calibration and data acquisition devices at the same time, and in still other embodiments, one of the A/D pods 114 is used to accurately sample the surrounding environmental temperature and serve as a temperature reference for the other A/D pods 114 being calibrated.
In step 152, power is applied to the A/D pod 114 and the A/D pod 114 is allowed to reach a stable operating temperature. Next, in step 154, a calibrated input reference signal, such as a voltage signal, current signal, resistance signal or the like, of a known value is selected. The input signal is preferably provided by a device that has been calibrated against a known standard and is traceable to NIST or some other nationally recognized reference standard. The selected input reference signal is applied to the A/D pod 114, which converts the input signal into a digital output signal. In step 156, the digital signal output from the A/D pod 114 is measured and compared to the standard calibrated value of the reference input signal to determine the difference between the two signals (i.e., the known input signal and the output digital signal). In step 158, the raw data, which includes the value of the calibrated signal, the value of the digital output, the current temperature, and the difference between the theoretical value of the calibrated input signal and the actual digitized output signal, is stored in the data acquisition device or PC for later analysis.
In step 160, it is determined if all of the input reference signals have been applied to the A/D pod 114 and whether the differences have been measured. In preferred embodiments, 10-12 different calibrated input reference signals are applied and sampled at each temperature level. However, in alternative embodiments, more or less input reference signals per temperature level may be used. In step 160, if more input reference signals are to be sampled, the calibration method returns to step 154 and repeats the sampling until all input reference signals have been sampled. On the other hand, if all the reference signals have been sampled, the calibration method advances to step 162, it is determined whether or not all the temperature values have been sampled.
If it is determined that more temperature values are to be sampled, the calibration method advances to step 164 and the temperature is altered to the next level to be sampled. At this point, the temperature controlled environment and the A/D pod 114 are given sufficient time to stabilize at the new temperature level. In preferred embodiments, the temperature is incremented in steps of 1° C. However, in alternative embodiments, the temperature may be incremented by larger values, such 5°-10° C. or the like, or by smaller values, such as 0.1°-0.5° C. or the like. Once the temperature has stabilized, the calibration method returns to step 154 and repeats the steps of sampling and comparing the output of the A/D pod 114 at the new temperature level.
If the A/D pod 114 has been calibrated at all of the temperature levels and with all of the input reference signals, the calibration method advances to step 166. In step 166, the raw data, stored during the calibration method, is retrieved from storage and a mathematical multiple regression is applied to the raw data to yield, for example, equations and/or interpolation data. This equation and/or interpolation data will be stored in the ROM 118 and used by the CPU 116 to passively alter the digital signal output from the ADC 62 based on the temperature level at which a measurement is being performed. If the raw data yields a relatively linear relationship, then equations can be effectively used by the CPU 116 of the A/D pod 114. However, if the raw data is non-linear or discontinuous, an interpolation look up table may be more effectively used by the CPU 116 of the A/D pod 114. Once the raw data is analyzed, the calibration method advances to step 168, for a determination as to whether or not satisfactory equations were obtained. If satisfactory equations were obtained (i.e., linear), the calibration method advances to step 170 and stores the equations in the ROM 118, or on a PC for later input into the ROM 118. On the other hand, if the obtained equations are not satisfactory, an interpolation table is stored in the ROM 118, or on a PC for later input into the ROM 118. In alternative embodiments, both the equations and the interpolation table are stored into the ROM 118 for selective use by CPU 116 of the A/D pod 114. After storage of the analyzed data the calibration method advances and terminates at step 174.
FIG. 13 shows a flow chart representing one embodiment of a temperature compensation method used to adjust the digital signal output from the A/D pod 114 of FIG. 11. This compensation method is used to compensate for changes and variations of temperature during the operation of the A/D pod 114. In step 180, prior to performing the remaining compensation method steps, the A/D pod 114 is connected to a data acquisition system that receives the digital signal output from the A/D pod 114, and a measurement transducer that provides the input to the A/D pod 114. Also in step 180, the temperature compensation method is enabled by a command, for example, sent from the data acquisition system to the CPU 116 of the A/D pod 114. Once the power is switched on in step 180, the compensation method advances to step 182.
In step 182, the temperature sensor 120 determines the temperature of the A/D pod 114, and this value is stored for later use by the CPU 116. In preferred embodiments, the temperature is measured by the temperature sensor to an accuracy of 0.1° C.; however, other accuracy levels can be used. In step 184, the input signal from the measurement transducer is sampled and converted by the ADC 62 of the A/D pod 114 into a digital signal. In step 186, the digital signal from the ADC 62 is sent to the CPU 116, which uses the last measured temperature from the temperature sensor 120 and the equations (or table) from the ROM 118 to determine an adjustment coefficient. Next, the CPU 116 uses the adjustment coefficient to alter the digital signal received from the ADC 62 to compensate for variances caused by the temperature. After the digital signal has been adjusted for compensation, the adjusted digital signal is sent by the CPU 116 to the interface unit I/O 60, which in step 188 sends the adjusted digital signal to the data acquisition system in the manner described above for the A/D pod 14 shown in FIG. 6.
After the adjusted digital signal has been sent to the interface unit I/O 60, the compensation method advances to step 190, where a decision is made as to whether or not the temperature should be remeasured and updated. In preferred embodiments, the temperature is remeasured every 1-10 seconds. However, in alternative embodiments, the temperature can be measured more or less often. In step 190, if it is time to remeasure the temperature, the compensation method returns to step 182 and the temperature is remeasured and updated. On the other hand, if the temperature is not to be updated, the compensation method advances to step 192, which determines if further samples from the measurement transducer are to be taken. In step 192, if further samples are to be taken, the compensation method returns to step 184. On the other hand, if no further samples are to be taken, the compensation method advances to step 194 and further samples are suspended.
FIGS. 12 and 13 illustrate one preferred embodiment of a temperature calibration and a temperature compensation method. However, other methods may be used. For example, in the calibration method, the A/D pod may be subjected to a plurality of different types of reference input signals (i. e., voltage inputs, current inputs, resistance inputs or the like). Moreover, in the compensation method, the digital signal from the ADC 62 might be received by the data acquisition system unaltered, and the data acquisition system, itself, calculates the adjustment coefficient and adjust the signal independently of the A/D pod 114. Also, the compensation method may be combined with other compensation techniques, such as with an auto-zero capability that reduces errors due to system drift that tends to occur from long periods of continuous operation. Furthermore, the temperature calibration and temperature compensation methods may be used to improve the accuracy of typical prior art A/D converting circuits.
FIG. 14 shows an embodiment of a data acquisition apparatus 200 that is capable of sampling and converting voltage signals, as described above, but also is capable of sampling and converting current and resistance signals. The core of the data acquisition device 200 is an A/D pod 214, which may be either an A/D pod 14 or 114 as described above, that is connected to a plurality of different transducer type inputs. These transducer inputs are a voltage transducer input 216, a current transducer input 218, and a resistance transducer input 220, each being adapted to receive signals from a respective type of transducer. Since the above-described embodiments of the A/D pod are already capable of sampling voltages directly, to sample voltage inputs, the voltage transducer input 216 is directly coupled to the A/D pod 214. To sample current inputs, the current transducer input 218 is coupled to the A/D pod 214 through a current to voltage convertor 222 that converts the current into a voltage that is supplied to the A/D pod 214. To sample resistance inputs, the resistance transducer input 220 is coupled to the A/D pod 214 through a resistance to voltage convertor 224 that converts the resistance into a voltage that is supplied to the A/D pod 214. In particular embodiments, the data acquisition device 200 can sample voltage signals between .+-.200 mV to .+-.700 mV, current signals between 20 to 200 mAmps DC and resistance signals between 100 to 100,00 ohms. However, in preferred embodiments, the data acquisition device can sample voltage signals between .+-.100 mV to .+-.2.0 V, current signals between 10 mA to 1 A Dc, and resistance signals between 1.0 to 1,000,000 ohms. However, in other embodiments, the data acquisition device 200 may sample larger ranges.
In alternate embodiments, the A/D Pod 214 may include only one of the current transducer inputs 218 or resistance transducer inputs 220 such that single function A/D Pods are built. Also, the selectable A/D Pods which include voltage, resistance and current measuring capability may be software selectable by the user or selectable by other means, such as a switch or the like.
The A/D pod 114 (illustrated in FIG. 11) is shown with an on-board CPU 116 and ROM 118 for performing the temperature compensation method. However, in alternative embodiments, the compensation method is performed by an external processor, PC or the like, and the equations or interpolation table stored in the ROM 118 is actually stored in memory associated with the processor, PC or the like. Moreover, in other embodiments, the A/D pod 114 has a ROM 118 which downloads the equations or the interpolation table to a host PC for compensation in the PC after receipt of the uncompensated signal. Furthermore, the CPU 116 may be any suitable processor, such as a microprocessor or the like, the ROM 118 may be any suitable storage device, such as an EPROM, static RAM, or the like, and the temperature sensor 120 may be any suitable temperature measuring device, such as a thermocouple, thermal resistor or the like.
While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention.
The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. | | Assignee/Applicant: TechnoView Inc.,Newport Beach,CA,US | | Assignee/Applicant First: TechnoView Inc.,Newport Beach,CA,US | | Assignee - Standardized: TECHNOVIEW INC | | Assignee - Original: TechnoView Inc. | | Assignee - Original w/address: TechnoView Inc.,Newport Beach,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Littlefield, James A. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Littlefield, James A. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Littlefield James A.,Boston,MA,US | | Inventor Count: 2 | | Attorney/Agent: Spensley Horn Jubas & Lubitz | | Attorney/Agent - w/Address: Spensley Horn Jubas & Lubitz | | Correspondent: | | Correspondent - w/Address: | | Examiner: Hoff, Marc S. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1996-01-30 | | Publication Month: 01 | | Publication Year: 1996 | | Application Number: US1994181605A | | Application Country: US | | Application Date: 1994-01-13 | | Application Month: 01 | | Application Year: 1994 | | Application with US Provisional: US1994181605A | 1994-01-13 | | Priority Number: US199369029A | | Priority Country: US | | Priority Date: 1993-05-28 | | Priority Date - Earliest: 1993-05-28 | | Priority Month: 05 | | Priority Year(s): 1993 | | Earliest Priority Year: 1993 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US199369029A
| 1993-05-28
| US5359327A
| 1994-10-25
| Continuation-in-part
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: G05F000318, H03M000108, H03M000112 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
G05F000318
| G
| G05
| G05F
| G05F0003
| G05F000318
|
H03M000108
| H
| H03
| H03M
| H03M0001
| H03M000108
|
H03M000112
| H
| H03
| H03M
| H03M0001
| H03M000112
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| G05F 3/18
H03M 1/089
| H03M 1/12
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 341119, 327326, 341139, 341141 | | US Class (divided): 341/119, 327/326, 341/139, 341/141 | | US Class - Main: 341119 | | US Class - Original: 341119 | 327326 | 341139 | 341141 | | ECLA: G05F000318, H03M000108W, T03M000112 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Maxim, .+-. 18-Bit ADC with Serial Interface Max 132 Manual, May, 1992. | RDP, Letter and Brochure for Datacom Distributed Intellegent Data Acqusition System, Sep., 1993. | Maxim, .+-. 18-Bit ADC with Serial Interface Max 132 EV Kit Manual, Jul., 1992. | | Count of Cited Refs - Non-patent: 3 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
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US6999012B2
| 2006-02-14
| SAMSUNG ELECTRONICS CO LTD
|
US7423610B2
| 2008-09-09
| LENOVO SINGAPORE PTE LTD
|
| | Count of Citing Patents: 13 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2000-04-11
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 2000-01-30 |
| |
2000-01-30
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
1999-08-24
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1994-01-13
| AS
| -
|
| Description: ASSIGNMENT TECHNOVIEW, INC., CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNORS:BROWN, ERIC W.; LITTLEFIELD, JAMES A.; REEL/FRAME:006857/0165; SIGNING DATES FROM 19940109 TO 19940111 |
| |
| | Post-Issuance (US): EXPI Expiration 2000-01-30 2000 Jan. 30, 2000 due to failure to pay maintenance fees | | Maintenance Status (US): E1 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 1994-01-09
| 006857/0165
| 1994-01-13
|
LITTLEFIELD, JAMES A.
| 1994-01-11
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: PAUL H. KOVELMAN, ESQ. SPENSLEY HORN JUBAS & LUBITZ 1880 CENTERY PARK EAST, FIFTH FLOOR LOS ANGELES, CALIFORNIA 90067-1605 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 1994-01-09
| 006857/0165
| 1994-01-13
|
LITTLEFIELD, JAMES A.
| 1994-01-11
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: PAUL H. KOVELMAN, ESQ. SPENSLEY HORN JUBAS & LUBITZ 1880 CENTERY PARK EAST, FIFTH FLOOR LOS ANGELES, CALIFORNIA 90067-1605 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US5488368A
| 19960130
| Brown Eric W.
| TECHNOVIEW INC
|
| Title: A/D converter system and method with temperature compensation |
| |
US5359327A
| 19941025
| Brown Eric W.
| BROWN ERIC W
|
| Title: A/D converter system with interface and passive voltage reference source |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5488368A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5488368A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 3/43 | | US5131816A | Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors | | Publication Number: US5131816A | | Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors | | Title (Original): Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors | | Title (English): Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Infusion pump system with multi:fluid cartridge has programmable controller for linear peristaltic pumps outputting to manifold | Abstract:
A cartridge fed infusion pump containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor. The motor has a shaft which rotates to perform a pump cycle. A position encoder mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft. | Abstract (English):
A cartridge fed infusion pump containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor. The motor has a shaft which rotates to perform a pump cycle. A position encoder mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A cartridge fed infusion pump containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor. The motor has a shaft which rotates to perform a pump cycle. A position encoder mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft. | | Abstract (Spanish): | Claims:
We claim:
1. An infusion pump system comprising:
*
a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits;
*
a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and
*
means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
2. The infusion pump system of claim 1 wherein said output ports communicate with a multilumen output tube which connects to a multilumen connector means.
3. The infusion pump system of claim 1 wherein said output ports communicate with a manifold which feeds all fluids into a single output lumen.
4. The infusion pump system of claim 1 further comprising a programmable controller in said pump housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
5. The infusion pump system of claim 1 further comprising a clamp in the pump interface portion of said cartridge for securing said cartridge to said pump housing.
6. The infusion pump system of claim 5 wherein said clamp comprises a pair of clamp posts, each clamp post having a clamp head for insertion into said pump housing and means for changing said clamp posts between an open and a closed position.
7. The infusion pump system of claim 1 further comprising:
*
a plurality of clamp posts extending from the pump interface portion of said cartridge, each post carrying an expandable member for insertion into said pump housing; and
*
means for pulling on said clamp posts to expand said expandable members and to secure said cartridge to said pump housing.
8. The infusion pump system of claim 7 further comprising a support extending beneath the pump interface portion and connected to said clamp posts such that when said clamp posts are pulled to secure said cartridge, said support helps rigidify the pump interface portion a fixed distance from said pump.
9. The infusion pump system of claim 1 wherein each of said linear peristaltic pumps is operated by a direct current motor which rotates a motor shaft.
10. The infusion pump system of claim 9 further comprising along with each motor shaft, a position encoder rotatable in conjunction with its respective shaft for identifying a repeatable stop position for said shaft.
11. The infusion pump system of claim 9 wherein each of said direct current motors is selectively operable in a forward or reverse direction, the reverse direction being operable to quickly stop said motor.
12. The infusion pump system of claim 1 further comprising within said pump housing:
*
a power supply line coupled to a battery;
*
a diode coupled between said battery and said power supply line; and
*
a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
13. An infusion pump comprising:
*
a motor operable to rotate a motor shaft;
*
means for driving said motor;
*
a pump mechanism actuated by said motor shaft;
*
a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line;
*
processor means for initiating said driving means at selected intervals defined by a whole number of clock cycles to achieve a desired infusion rate which corresponds to intervals equal to the whole number and a calculated fracitonal value of clock cycles; and
*
a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the accumulated sum reaches at least 1.0, an additional clock cycle is temporarily added to the whole number of clock cycles in the selected interval.
14. The infusion pump of claim 13 further comprising a position encoder rotatable in conjunction with said motor shaft for identifying a repeatable stop position for said shaft.
15. The infusion pump of claim 14 further comprising optical means for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle.
16. The infusion pump of claim 15 wherein said optical means monitors said position encoder when said driving means is not being operated to ensure that said motor shaft has remained in the stop position.
17. The infusion pump of claim 13 wherein said pump mechanism comprises a plurality of finger members forming a linear peristaltic pump.
18. The infusion pump of claim 13 wherein said driving means is operable to selectively drive said motor in a forward or reverse direction, the reverse direction being usable to quickly stop said motor.
19. The infusion pump of claim 13 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
20. The infusion pump of claim 13 further comprising a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
21. The infusion pump of claim 13 wherein said motor comprises a direct current motor.
22. A multiple fluid infusion pump comprising:
*
a plurality of direct current motors each operable to rotate a motor shaft;
*
means for driving each of said motors;
*
a plurality of pump mechanisms arranged on a common base, each including a set of pump fingers which reciprocate through the base upon actuation by one of said motor shafts; and
*
a plurality of fluid supply lines, each situated relative to one of said pump mechanisms so as to be acted on by its respective pump mechanism such that when the motor associated with said pump mechanism is rotating, fluid is moved through said supply line.
23. The multiple fluid infusion pump of claim 22 wherein said pump is an ambulatory pump.
24. The multiple fluid infusion pump of claim 22 wherein each of said pump mechanisms comprises a plurality of finger members forming a linear peristaltic pump.
25. The infusion pump of claim 22 wherein each of said driving means is operable to selectively drive its respective motor in a forward or reverse direction, the reverse direction being usable to quickly stop said motor.
26. The infusion pump of claim 22 further comprising a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
27. An infusion pump comprising:
*
a housing having a platform;
*
a plurality of linear peristaltic infusion pumps, each pump having a plurality of pump fingers, said pumps being arranged in said housing so that said pump fingers reciprocate in and out through said platform; and
*
means for receiving a plurality of linear fluid conduits such that each of said linear fluid conduits aligns with the pump fingers of one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
28. The infusion pump of claim 27 further comprising a programmable controller in said housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
29. The infusion pump of claim 27 further comprising a manifold in communication with each of said fluid conduits for feeding all fluids into a single output lumen.
30. The infusion pump of claim 27 wherein each of said linear peristaltic pumps includes a direct current motor for rotating a shaft which is used to cause said pump fingers to reciprocate.
31. The infusion pump of claim 27 wherein each plurality of pump fingers is arranged parallel to one another in said platform.
32. The infusion pump of claim 27 further comprising:
*
a power supply line extending within said housing for coupling to a battery;
*
a diode coupled between said battery and said power supply line; and
*
a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply and said diode preventing said battery from being charged by said power supply line.
33. The infusion pump of claim 27 further comprising a plurality of position encoders each rotatable in conjunction with one of said motor shafts for identifying a repeatable stop position for said shaft and a plurality of optical means each for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle. | | Claims Count: 33 | Claims (English):
We claim:
1. An infusion pump system comprising:
*
a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits;
*
a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and
*
means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
2. The infusion pump system of claim 1 wherein said output ports communicate with a multilumen output tube which connects to a multilumen connector means.
3. The infusion pump system of claim 1 wherein said output ports communicate with a manifold which feeds all fluids into a single output lumen.
4. The infusion pump system of claim 1 further comprising a programmable controller in said pump housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
5. The infusion pump system of claim 1 further comprising a clamp in the pump interface portion of said cartridge for securing said cartridge to said pump housing.
6. The infusion pump system of claim 5 wherein said clamp comprises a pair of clamp posts, each clamp post having a clamp head for insertion into said pump housing and means for changing said clamp posts between an open and a closed position.
7. The infusion pump system of claim 1 further comprising:
*
a plurality of clamp posts extending from the pump interface portion of said cartridge, each post carrying an expandable member for insertion into said pump housing; and
*
means for pulling on said clamp posts to expand said expandable members and to secure said cartridge to said pump housing.
8. The infusion pump system of claim 7 further comprising a support extending beneath the pump interface portion and connected to said clamp posts such that when said clamp posts are pulled to secure said cartridge, said support helps rigidify the pump interface portion a fixed distance from said pump.
9. The infusion pump system of claim 1 wherein each of said linear peristaltic pumps is operated by a direct current motor which rotates a motor shaft.
10. The infusion pump system of claim 9 further comprising along with each motor shaft, a position encoder rotatable in conjunction with its respective shaft for identifying a repeatable stop position for said shaft.
11. The infusion pump system of claim 9 wherein each of said direct current motors is selectively operable in a forward or reverse direction, the reverse direction being operable to quickly stop said motor.
12. The infusion pump system of claim 1 further comprising within said pump housing:
*
a power supply line coupled to a battery;
*
a diode coupled between said battery and said power supply line; and
*
a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
13. An infusion pump comprising:
*
a motor operable to rotate a motor shaft;
*
means for driving said motor;
*
a pump mechanism actuated by said motor shaft;
*
a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line;
*
processor means for initiating said driving means at selected intervals defined by a whole number of clock cycles to achieve a desired infusion rate which corresponds to intervals equal to the whole number and a calculated fracitonal value of clock cycles; and
*
a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the accumulated sum reaches at least 1.0, an additional clock cycle is temporarily added to the whole number of clock cycles in the selected interval.
14. The infusion pump of claim 13 further comprising a position encoder rotatable in conjunction with said motor shaft for identifying a repeatable stop position for said shaft.
15. The infusion pump of claim 14 further comprising optical means for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle.
16. The infusion pump of claim 15 wherein said optical means monitors said position encoder when said driving means is not being operated to ensure that said motor shaft has remained in the stop position.
17. The infusion pump of claim 13 wherein said pump mechanism comprises a plurality of finger members forming a linear peristaltic pump.
18. The infusion pump of claim 13 wherein said driving means is operable to selectively drive said motor in a forward or reverse direction, the reverse direction being usable to quickly stop said motor.
19. The infusion pump of claim 13 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
20. The infusion pump of claim 13 further comprising a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
21. The infusion pump of claim 13 wherein said motor comprises a direct current motor.
22. A multiple fluid infusion pump comprising:
*
a plurality of direct current motors each operable to rotate a motor shaft;
*
means for driving each of said motors;
*
a plurality of pump mechanisms arranged on a common base, each including a set of pump fingers which reciprocate through the base upon actuation by one of said motor shafts; and
*
a plurality of fluid supply lines, each situated relative to one of said pump mechanisms so as to be acted on by its respective pump mechanism such that when the motor associated with said pump mechanism is rotating, fluid is moved through said supply line.
23. The multiple fluid infusion pump of claim 22 wherein said pump is an ambulatory pump.
24. The multiple fluid infusion pump of claim 22 wherein each of said pump mechanisms comprises a plurality of finger members forming a linear peristaltic pump.
25. The infusion pump of claim 22 wherein each of said driving means is operable to selectively drive its respective motor in a forward or reverse direction, the reverse direction being usable to quickly stop said motor.
26. The infusion pump of claim 22 further comprising a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
27. An infusion pump comprising:
*
a housing having a platform;
*
a plurality of linear peristaltic infusion pumps, each pump having a plurality of pump fingers, said pumps being arranged in said housing so that said pump fingers reciprocate in and out through said platform; and
*
means for receiving a plurality of linear fluid conduits such that each of said linear fluid conduits aligns with the pump fingers of one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
28. The infusion pump of claim 27 further comprising a programmable controller in said housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
29. The infusion pump of claim 27 further comprising a manifold in communication with each of said fluid conduits for feeding all fluids into a single output lumen.
30. The infusion pump of claim 27 wherein each of said linear peristaltic pumps includes a direct current motor for rotating a shaft which is used to cause said pump fingers to reciprocate.
31. The infusion pump of claim 27 wherein each plurality of pump fingers is arranged parallel to one another in said platform.
32. The infusion pump of claim 27 further comprising:
*
a power supply line extending within said housing for coupling to a battery;
*
a diode coupled between said battery and said power supply line; and
*
a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply and said diode preventing said battery from being charged by said power supply line.
33. The infusion pump of claim 27 further comprising a plurality of position encoders each rotatable in conjunction with one of said motor shafts for identifying a repeatable stop position for said shaft and a plurality of optical means each for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An infusion pump system comprising:
*
a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits;
*
a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and
*
means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps. | Independent Claims:
1. An infusion pump system comprising:
*
a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits;
*
a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and
*
means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
13. An infusion pump comprising:
*
a motor operable to rotate a motor shaft;
*
means for driving said motor;
*
a pump mechanism actuated by said motor shaft;
*
a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line;
*
processor means for initiating said driving means at selected intervals defined by a whole number of clock cycles to achieve a desired infusion rate which corresponds to intervals equal to the whole number and a calculated fracitonal value of clock cycles; and
*
a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the accumulated sum reaches at least 1.0, an additional clock cycle is temporarily added to the whole number of clock cycles in the selected interval.
22. A multiple fluid infusion pump comprising:
*
a plurality of direct current motors each operable to rotate a motor shaft;
*
means for driving each of said motors;
*
a plurality of pump mechanisms arranged on a common base, each including a set of pump fingers which reciprocate through the base upon actuation by one of said motor shafts; and
*
a plurality of fluid supply lines, each situated relative to one of said pump mechanisms so as to be acted on by its respective pump mechanism such that when the motor associated with said pump mechanism is rotating, fluid is moved through said supply line.
27. An infusion pump comprising:
*
a housing having a platform;
*
a plurality of linear peristaltic infusion pumps, each pump having a plurality of pump fingers, said pumps being arranged in said housing so that said pump fingers reciprocate in and out through said platform; and
*
means for receiving a plurality of linear fluid conduits such that each of said linear fluid conduits aligns with the pump fingers of one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a programmable cartridge fed ambulatory infusion pump powered by a DC electric motor.
It is an object of this invention to provide a compact, lightweight infusion pump which may be used for ambulatory patients. It is a further object of this invention to provide a pump which can be conveniently used with fluid source cartridges.
There has been a demonstrated need for pumps which can intravenously administer a plurality of drug solutions. For example, multiple drug chemotherapy treatments have been used to treat diseases such as cancer. Many of the drugs used in chemotherapy and other therapies cannot be mixed together prior to an infusion. Some of these drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient. Pumps have been developed which can concurrently pump a plurality of fluids through a multilumen catheter into a patient. The multilumen catheter keeps the drugs separate until they reach the bloodstream. For example, in U.S. Pat. No. 4,741,736 (Brown), a pump is disclosed which uses a roller to push fluid out of a plurality of compartments in an infusion pump. The different fluids in each of the compartments are pumped out at the same time by the action of the single roller.
In infusion pump patent, U.S. Pat. No. 4,666,430 (Brown and Tai) , a multiple syringe pump is disclosed in which a canister of compressed gas serves as the power source for pumping fluid out of a syringe. All of the syringes are controlled by the same canister of gas and variation in the pumping rate of a syringe is controlled by valves on the outlets of the syringes.
It is an object of the present invention to provide in a single ambulatory housing, separately and accurately controlled pumping mechanisms for each of a plurality of fluid sources. It is typical in infusion pumps where accurate infusion rates are desired to use a stepper motor. However, in providing an ambulatory pump, it is desirable to use smaller, lighter motors such as the dc electric motors of the present invention. A further object of the present invention is to provide controlled infusion rates with dc electric motors.
In order to deliver fluid at a precisely determined rate through a linear peristaltic pump, the pump value must be accurately positioned with respect to the fluid delivery tube. Any warping of the cartridge or any mispositioning of the pump may permit a leak when a pump valve is depressed against the tube. It is an object of this invention to provide a cartridge and tube mount which accurately position a tube within an infusion pump. It is desirable that accuracy be obtained using low cost plastic pieces.
SUMMARY OF THE INVENTION
The present invention is directed to an infusion pump system including a fluid source cartridge which is attachable to a pump housing. The pump housing has a plurality of linear peristaltic pumps. Fluids may be stored in the cartridge or provided through the cartridge from an external source such as an IV bag mounted on a pole. The cartridge has a linear fluid conduit which aligns with the peristaltic pump for each fluid when the cartridge is inserted into the housing. The conduits are provided in what is called herein the pump interface portion of the cartridge. The pumping of fluid through any of the fluid conduits in the cartridge is controlled by that conduit's respective peristaltic pump.
The infusion pump housing may be advantageously provided with a programmable controller to permit individual control over each of the peristaltic pumps. This permits operating the pump sequentially or concurrently and at any selected pumping rate.
The pump according to the present invention is operated by a direct current motor. A position encoder rotatable in conjunction with the shaft of the motor provides an indication of a full cycle of the motor. Thus, by controlling the time delay between each motor cycle, the infusion pump rate can be controlled. The motor can be operated in reverse to assist it in stopping at the stop position indicated by the position encoder.
To provide accurate positioning of fluid pump tube with respect to the infusion pump, the cartridge of the present invention is provided with a handle clamp. The clamp is located in the pump interface portion of the cartridge. The clamp includes a bar which gives support to the pump interface portion, thereby holding the pump tubes firmly in position against the infusion pump.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 is an isometric view of a pump and a cartridge of the present invention.
FIG. 2 is a second isometric view of the cartridge and pump of the present invention.
FIG. 3 is a bottom plan view of a pump of the present invention without the cartridge in place.
FIG. 4 is a side cross-sectional view of a pump and the cartridge of the present invention.
FIG. 4A is a close-up view of the optical sensor and position encoder of the pump of FIG. 4.
FIG. 5 is a plan view of a cartridge for use in the present invention.
FIG. 6 is a side elevational view of the cartridge of FIG. 6.
FIG. 7 is an elevational view of the cartridge of FIG. 5
FIG. 8 is an isometric view of the underside of an infusion pump with a cartridge of the present invention inserted.
FIG. 9 is a partial cross-sectional view of the cartridge of the present invention inserted into an infusion pump with the clamp open.
FIG. 10 is a partial cross-sectional view of the pump and cartridge of FIG. 8 with the clamp closed.
FIG. 11 is a cross-sectional view of the rear portion of the pump and cartridge of FIG. 8.
FIG. 12 is an isometric view of a cartridge of the present invention for use with pole mounted fluid source pouches along with pump tube mounts.
FIG. 13 illustrates how a pump tube mount is inserted into the cartridge.
FIG. 14 is an isometric view of the pump tube mount attached to a fluid source pouch.
FIG. 15 is a plan view of the pump tube mount without the tube and its retaining rings.
FIG. 16 is an elevational view of the pump tube mount of FIG. 15.
FIG. 17 is an isometric view of a cartridge of the present invention for use with mini-bag fluid sources.
FIGS. 18A and 18B are a schematic of the circuitry for operating the pump motors.
FIG. 19 is a schematic of the electronic circuitry devoted to a single pump motor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, a pump housing 10 is provided for pumping fluid from a multiple fluid cartridge 20. The pump housing 10 is provided with a liquid crystal display 12, a keyboard 14 and as shown in FIG. 2, programming jack 16. The underside of the pump housing 10 forms a cavity for receiving the cartridge 20. The cavity extends through one end of the pump housing 10.
The cartridge 20 houses one or more pump tube mounts 24. The portion of the cartridge 20 housing the pump tube mounts 24 is referred to herein as the pump interface portion. The remainder of the cartridge is referred to as the fluid source portion. Each pump tube mount 24 is connected to a fluid source which is either stored in a bag or a pouch in the fluid source portion of the cartridge or stored on a bag hanging from an intravenous delivery pole. To connect with a bag hanging from a pole, the cartridge's fluid source portion may have a window through which tubing may be inserted to connect the bag with the tube mount. Each pump tube mount 24 includes a compressible tube 22 made from a material which is inert to the fluids which will be fed through the tube. At the outer end of the pump tube mount 24, a luer connector 26 serves as the outlet for delivering fluid into an output lumen.
Individual output lumens may be connected to each of the luer connectors 26. These lumens may remain separate or they may be fused together to form a multilumen tube for outputting the fluid to a connector for making connection with an implanted catheter, for example. The multilumen output tube may be connected to any of a variety of multilumen connectors. A needle connector may be used in which each lumen is connected to a hollow injection needle. The needle connector may be inserted through a silicone block to make connection with a connector for a multilumen catheter. Another option is a multilumen connector such as that described in co-pending U.S. Pat. application Ser. No. 07/178,673 filed on Apr. 7, 1988, now issued as U.S. Pat. No. 4,950, 255 owned by the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein. A third possibility for the multilumen output tube is to connect each lumen separately to a luer connector so that individual connections can be made to four separate catheter lines.
An alternative connector for delivering fluid from the cartridge to a patient may be a single lumen manifold 28 as shown in FIG. 1. The manifold 28 can be provided with four connectors 30 for securely attaching to the luer connectors 26, extending from the cartridge. Each of these connections may then lead to a single lumen 32. When this type of connector is used, it is normal practice to make the fluid source furthest from the manifold output a flushing solution. With this arrangement, the pump generally delivers one solution at a time or one fluid in conjunction with the flushing solution. Before switching from one solution to another, the flushing solution is delivered to clean out the single lumen so as to prevent intermixing of different fluid solutions. This would be necessary in the case of drugs which are either incompatible or which cause precipitation when mixed.
The cartridge 20 is provided with several positioning tabs 34 which extend from the rear end of the cartridge. The tabs 34 are inserted into holes located in the rear of the cavity of the pump. The engagement of the tabs 34 with the holes secures one end of the cartridge in the pump 10. The other end is secured by clamp heads 25 whose operation will be discussed in greater detail with respect to FIGS. 8-11.
The cartridge 20 may be used with a pump having a key operated latch 36. The latch 36 engages a tab 38 extending from the rear end of the cartridge 20. The latch 36 is used as a lock to prevent tampering with the drug solutions stored within the cartridge.
FIG. 2 illustrates flexible pouches 44 used as the fluid sources within the cartridge 20. Each fluid source pouch 44 is connected to a pump tube mount 24. At present, the following procedure is suggested for using the cartridge 20 when it is provided with empty pouches 44. The desired fluid is injected into the connector outlet 26, using a syringe or other conventional means. After filling the pouch 44 with the desired amount of fluid, the connector outlet 26 is attached to the output line. When all of the pouches are filled with their fluid, the cartridge may be inserted into the pump housing 10 and a purge cycle may be run on each of the fluid sources to pump out all of the air which may have gotten into the pouch or pump tube. After purging the air, the cartridge 20 is ready for use in an infusion.
Referring now to FIGS. 3 and 4, the presently preferred pump for use with the present invention is provided with a plurality, four in this case, of linear peristaltic pumps. The illustrated pump is a three finger pump, called such because of the three cams which are repeatedly lowered and raised to provide the desired pumping action. Each pump rotates a cam shaft 56 which selectively pushes against three cam followers or "fingers", including an output valve 46, a pump plunger 48 and an input valve 50. Power for the pump may be provided by a battery pack which can be loaded into a cavity behind a battery cover 52 alongside the peristaltic pumps within the housing 10. Alternatively, power can be provided through a jack 17. Each pump is provided with its own motor 54 which turns a cam shaft 56. In accordance with the present invention, each motor 54 is a direct current electric motor. The cam shaft 56 is provided with a timing disk or position encoder 58 shown in greater detail in FIG. 4A. The timing disk is solid except for a sector which is removed. The disk can thus be read by an optical sensor circuit 152 on a printed circuit board 60 to count the rotations, thereby controlling the rate and location of the cam shaft 56. The optical sensor includes a light emitting diode 57 and a photodetector 59.
To maintain improved accuracy, the cam followers should be made to always press against the tube 22, even when in the open position. The pump tube 22 is supported relative to the cam followers by a rigid base 67. A clamp, including clamp handle 69 and clamp heads 25, ensures that the rigid base 67 is always positioned a fixed distance from the cam followers on the pump.
Pumping is performed as follows. With the pump plunger 48 and the input valve 50 retracted, the output valve 46 is lowered to close off the fluid conduits. This permits the pump tube 22 to fill with fluid. This is the preferred position whenever the pump is inactive. In this position, the open sector of the position encoder is aligned with the light emitting diode and photo receiver. Next, the input valve 50 is lowered to close off the pump tube 22 and prevent fluid from flowing back into the fluid source 44. The cam shaft is then turned permitting the tube 22 to expand, pushing the output valve 46 to open. The pump plunger 48 is activated by the cam shaft to push fluid out of the tube 22 and through the outlet 26. Then the output valve 46 is again closed. The pump plunger 48 and the input valve 50 are permitted to open, thereby allowing the pump tube to refill with fluid. Thus, fluid is pumped out of the fluid source. The pump tube in the presently preferred embodiment has an inner diameter of 0.086 inches, an outer diameter of 0. 156 inches and a 50 durometer Shore A. The rate of pumping is controlled by knowing the precise volume pumped in each cycle and monitoring the number of pumping cycles per unit of time. The presently preferred embodiment pumps 50 microliters in each pump cycle.
A programmable microprocessor is provided on a control circuit board 76. Each of the four pump motors is controlled by the motor control board 60 and the controller board 76. The control circuits are described in greater detail below with respect to FIGS. 18 and 19. Since each fluid source has its own pump and pump motor, the rate and sequence of fluid infusion is entirely flexible. With a sufficient power source, infusions may take place concurrently or sequentially and at any rate. The present embodiment can pump fluid anywhere between 0.01 and 200 milliliters per hour. The desired sequence and rates of infusion are programmed into the controller board 76 through the programming jack 16. Thus, in accordance with the present pump, multiple fluid infusion treatments may be delivered to a patient in any number of sequences and rates. Thus, the pump provides physicians with great latitude for selecting multiple-fluid drug regimens for treating patient illnesses.
Referring now to FIGS. 5-7, the cartridge 20 shall be described in greater detail. The cartridge of the presently preferred embodiment is made of polycarbonate. FIG. 5, illustrates a cartridge 20 of the type with a window 62. The window provides a hole through which tubing can be fed to connect the pump tubes 22 with fluid sources. A discontinuous dividing wall 64 separates the cartridge 20 into a pump interface portion 66 and a fluid source portion 68. The fluid source portion 68 may provide fluids through a window such as that shown in FIG. 5. Alternatively, the fluid source portion 68 may be filled with fluid source pouches 44. With the pouches 44, the cartridge 20 can be used by an ambulatory patient. The cartridge 20 with a window 62 permits the same pump apparatus to be used with a pole mounted infuser and IV bags. Alternatively, the fluid source portion 68 of the cartridge 20 can be made extra deep, as shown in FIG. 17, to provide room for drug solution mini-bags. Such mini-bags provide more volume of fluid than the pouches 44. The mini-bag cartridge of FIG. 17 includes an inclined floor to help urge the fluid in the mini-bags towards the opening in the bottom of the bag. As such, the pump apparatus can be used with the mini-bags to provide a portable infusion apparatus which can be used by a patient undergoing high fluid volume infusions in the home. The mini-bag cartidge is provided with an opening for access to its clamp handle. A ring 71 may be attached to the handle for easier operation in pulling the handle open.
Referring to FIG. 6, a ledge 75 is formed by the dividing wall 64. The ledge 75 has an upper edge 77 at the level of the base of the pump interface portion of the cartridge. The ledge 75 has a lower edge 78 or a series of individual lower edges 78 which are provided for engaging the pump tube mounts.
The end wall 70 of the cartridge has a series of uniquely shaped openings 80 which accommodate the outlet ends of the pump tube mounts. Immediately behind each opening 80 is a retaining stump 82. The opening 80 is shaped to secure the front wall 84 of the pump tube mount in two directions. The front wall 84 is prevented from moving up and down or left and right when installed within the cartridge opening 80. Furthermore, the opening 80 is given a unique shape as if it were a lock for a key. Just as a key may be uniquely designed to fit into a lock, the front wall 84 of a pump tube mount can be uniquely shaped to fit the unique shape of the opening 80. This feature helps to ensure that only the appropriate tube mounts are inserted into the cartridge. The retaining stump 82 prevents the wall from moving back into the cartridge. The final direction of freedom is secured by the interaction of the rear wall of the pump mount with the ledge 75 of the cartridge.
Referring now to FIGS. 8-10, the mechanics for holding the cartridge in place against the pump shall be described. A clamp is located in the pump interface portion of the cartridge. Since this is where the pump tubes are located, it is critical that this portion of the cartridge be repeatably and accurately positioned and held against the infusion pump. It is important that the pump interface portion 66 of the cartridge 20 be held in a fixed position against the pump, since if the position is off it is possible that one of the pump fingers would not fully close off a pump tube as required to provide precise infusion rates.
The clamp includes two clamping posts 81 each with a clamp head 25. The clamping posts and clamp head are made of stainless steel in the presently preferred embodiment. Surrounding each clamping post 81 beneath its clamp head 25 is a compressible elastomeric tube 83, made of silicone in the presently preferred embodiment. The clamping post 81 may be formed by a screw 85 and threaded shaft 87 as shown in FIG. 9. Alternatively, the clamping post 81 may be a single rod with a flaired top portion as shown in FIG. 10. The clamp head 25 in FIG. 9 is formed by a washer 89 and the head of the screw 85. The clamp head 25 is formed about the flaired top of the rod in FIG. 10. The clamping posts 81 are axially movable within mounting walls 91 in the pump interface portion of the cartridge.
At the end of each clamping post 81 extending through the bottom of the cartridge 20, is inserted an expansion pin 93. The expansion pins 93 act as an axle about which the clamp handle 69 can be rotated. The pins 93 engage a hole in the clamp handle which is positioned so as to be a short distance from one edge and a longer distance from a second edge. As shown in FIG. 9, when the handle 69 is protruding out from the cartridge, the expansion pin 93 is between the handle and the edge which is a short distance from the pin. Thus, the pin is held a short distance from the bottom side of the pump interface portion of the cartridge. When the clamp handle 69 is pushed against the cartridge, the expansion pin 93 is pulled on until the clamp handle 69 rests on its side. With the handle on its side against the cartridge the expansion pin 93 has been pulled into a second position in which it is a longer distance from the bottom side of the pump interface portion. In this second position, the clamp head 25 is pulled down against the silicone tube 83. The tube 83 is compressed axially and expands radially. The tube 83 expands filling a countersunk hole 95 in the infusion pump base.
When the clamp is in the locked position as shown in FIGS. 8 and 10, the expansion pins 93 pull the clamp handle 69 upwards and the clamp head downwards. This secures the pump interface portion a fixed distance from the infusion pump base. The clamping action is sufficiently strong so that any affects of the pump fingers are insignificant. Additional support may be provided by an inner bar 97 which is a part of the handle 69 stretching between the clamping posts. The handle 69 and inner bar 97 are made from Delron in accordance with the presently preferred embodiment. The handle with its inner bar 97 extends across all four of the pump tube locations. Thus, the pull of the clamp is directly applied underneath each of the pump tubes. In this manner, the clamp of the present invention advantageously rigidifies and supports the base under each of the pump tubes maintaining the base at an accurate distance from the pump fingers.
FIG. 11 shows the engagement of the rear portion of a cartridge 20 with the pump housing. In order to insert a cartridge 20 into an infusion pump, the rear edge is inserted first. Tabs 34 are inserted into mating holes 99 in the pump housing 10. Then the pump interface portion of the cartridge is swung up into place. The clamp heads 25 enter the pump housing 10 through the countersunk holes 95 when the cartridge 20 is properly positioned. When the cartridge is in place, the clamp handle 69 is pushed against the cartridge to secure the cartridge in place. The key operated latch 36 may also be secured against the cartridge to protect against unauthorized access to the drug solutions in the cartridge.
The pump tube mounts for insertion into a cartridge are shown in FIGS. 12-16. The front wall 84 of a pump tube mount can be seen in FIG. 12. The front wall 84 is shaped so as to mate with the openings 80 in the cartridge. Extending from the front wall 84 is an outlet 26 which is preferably a female luer connector. Two side walls 86 connect the front wall 84 to a rear wall 88. The rear wall 88 of the pump tube mount extends downward below the base 67 of the pump tube mount. At the lower end of the rear wall 88 is a pair of tabs 90 which engage the lower edge 78 of the ledge 75 in the cartridge 20. The dividing wall 64 in the cartridge 20 is discontinuous providing openings for each of the pump tube mounts. Also illustrated in FIG. 12 is a bag spike 92, which is inserted into a bag of fluid solution hanging from a pole to connect the pump with the fluid solution.
FIG. 13 shows how the pump tube mount is inserted into the cartridge. The rigid base 67 beneath the pump tube 22 does not extend all the way to the front wall or the rear wall. At the front wall, this provides a space into which the retaining stump 82 can be extended. Thus, the first step, is to position the front wall 84 up against the stump 82. The rear wall 88 is then lowered over the ledge 75 in the cartridge 20. As the rear wall 88 is lowered, the front wall 84 pivots into place within the opening 80. The rear wall 88 is lowered until the tabs 90 snap into the openings beneath the lower edge 78. The rear wall 88 is located so as to fit snugly against the ledge 75. Thus, when the tabs 90 have not yet been lowered into the openings beneath the edge 78, the tabs 90 are forcing the rear wall 88 away from its normal resting position. Once the tabs get beneath the lower edge 78, the rear wall 88 is free to resume its resting position and therefore springs back against the ledge to make a snapping noise. The snap can be heard and felt so as to reassure the user that the pump tube mount is correctly positioned. The engagement of the tabs and the lower edge 78 keeps the pump tube mount in its correct position. When in place, the rear wall 88 against the ledge 75 prevents the pump tube mount from moving forward. This, in combination with the retaining stump 82 and the opening 80 securely holds the pump tube mount in a known position in three dimensions.
FIG. 14 illustrates a disposable pump tube mount. The tube mount, according to the presently preferred embodiment, is made of polycarbonate. The pump tube mount shown is attached to a flexible fluid source pouch 44. The fluid source pouch 44 may be adhesively bound to an inlet 94 extending from the rear wall 88 of the pump tube mount. A luer cap 96 may be screwed on to the luer connector 26 when the tube mount is not hooked up to an output line.
In FIG. 15, the pump tube mount is shown without a tube 22. Extending inwards from the front wall and the rear wall 88 is a fitting 98. The fitting 98 has a cylindrical exterior portion which makes surface contact with the inner circumference of the tube 22. The surface contact provides a frictional force between the fitting 98 and the inner circumference of the tube 22. In certain applications, this frictional force may be sufficient to hold the tube on the fittings. The presently preferred material for the tube 22 is Dow Corning medical-grade silicone.
Further force to hold the pump tube on the fitting may be provided by a barb extending from the fitting to dig in and hold onto the tube. Alternatively, in accordance with the presently described embodiment, an indentation such as an annular groove 100 is made in the cylindrical fitting 98. If the tube 22 fits tightly enough over the fitting 98, the silicone will slightly extend into the groove 100. This will provide an edge against the fitting which will hold the tube in place. To ensure that the silicone is depressed into the groove 100, a collar 102 may be placed over the tube concentrically aligned with the groove 100. The engagement of the tube with the groove provides adequate resistance against the shear forces created by the pumping action. The collar 102 is preferably a rigid material which is sized to compress the silicone into the groove 100. The collar 102 may be made from a material such as PVC or stainless steel.
Referring now to FIG. 16, the rigid base 67 is shown. The base 67 is supported by the sidewalls 86 of the pump tube mount. As can be seen in FIG. 16, there is a space between the rigid base 67 and the front wall 84 into which the stump 82 can extend. In operation, the base 67 rests against the bottom of the pump interface portion of the cartridge and is securely held in position by the clamp which extends across the pump interface portion.
The electronics for operating a direct current motor in the infusion pump of the present invention shall be described with reference to FIGS. 18A, 18B and 19. The program functions of the infusion pump are controlled by a microprocessor 110. The presently preferred microprocessor is an 80C31. A connection is provided between the microprocessor 110 and a serial I/0 interface 112. The serial interface provides for bi-directional communication between the programmable infusion pump and attached equipment. Applications for the serial I/0 interface include 1) the receipt of an infusion schedule from an external programmer, 2) external initiation of a self-test mode with transmission of the self-test status, 3) external initiation of diagnostic functions, and 4) externally triggered events such as a schedule stop or a special infuse sequence.
The microprocessor operates the liquid crystal display 12 through an LCD controller. The presently preferred LCD controller is a Philips PCF 2111.
A status port 116 interacts with the keypad 14 and battery monitor 118. The battery monitor 118 detects when the battery is either low, dead or not inserted.
The internal battery 120 may be used to supply power to the circuitry. A power jack 17 permits the pump to be run on external power rather than using the battery 120. The voltage provided by the battery or power jack is indicated as V.sub.BAT. A schottky diode reduces V.sub. BAT about a quarter of a volt to get .sub.V cc which is used by most of the circuitry. When a plug 123 for providing power is fully inserted into the power jack 17 a switch 122 is forced open, breaking its contact. The power for the programming circuitry is then maintained by the external source. In order to avoid an undesirable break in the provision of power to the infusion pump when an external plug 123 is inserted into the power jack 17, a diode 124 is connected to the battery 120. When a battery is installed in the infusion pump, current can pass from the battery through the diode 124. When a power plug is inserted into the jack 17, a non-conducting end 125 of the plug may contact the switch and break the switch contact before electrical connection is made between the plug and the power line for the circuitry. When the switch is broken the battery continues to provide power through the diode 124 thereby avoiding a temporary loss of power. Once electrical contact is made between the external source and the power line, power is essentially provided by the external source and the diode 124 prevents the external power source from charging the non-rechargeable battery 120.
A timing signal is provided to the microprocessor 110 by a 1. 8432 megaHertz oscillator 126.
A wake-up timer 128 divides the 32,768 Hz signal from an oscillator 130 so that a reset signal is delivered each sixteenth of a second from the wake-up timer to the microprocessor. The microprocesor is awakened each sixteenth of a second at which point it cycles through its control program. The microprocessor 110 manipulates and monitors counters to generate delays inserted between each motor startup to obtain a desired infusion rate. Each time the motor is started, it performs a complete pump cycle. Given a fixed volume of fluid delivered for a pump stroke, an infusion rate can be converted into a delay time between pump cycles. The delay time for the desired infusion rate for each pump is input into the pump control board through the programming jack 16. For example, a flow rate of 200 ml/hr converts to a delay of 14. 4 sixteenths of a second for a stroke volume of 0.05 ml.
The processor keeps track of the whole and fractional cycles separately. If the cycle count is a whole number such as 14.0, then every fourteeen sixteenths of a second, (every 14 cycle periods), the motor will be started in a microprocessor program cycle. When a fractional cycle is required for a given rate, the fraction value is accumulated until it exceeds 1. Then, an additional cycle is added to the cycle count. For the case where the cycle time is 14.4 sixteenths, a first motor cycle will begin after 14 sixteenths. 4/10 is carried over. The next pump cycle will be started after the next 14 sixteenths. Again, 4/10 is added to the fraction accumulator, leaving 0.8 as the accumulated total. Fourteen clock periods later the motor will be started again. This time when the 4/10 is added to the accumulator, unity is exceeded with an additional fraction of 2/10. An additional cycle is added to the cycle count so that the next motor cycle will not begin until 15 clock periods later. The succeeding cycle will again have a cycle count of 14, until the fractional accumulator exceeds unity. Thus, for a pumping time of 14. 4 sixteenths, the sequence will be 14, 14, 14, 15, 14, 14, 15. This will provide a sufficiently accurate infusion rate.
The fail safe timer makes sure that the motors are not operated if the microprocessor is not working properly. The microprocessor resets the fail safe timer each control program cycle, that is, each sixteenth of a second. Should the fail safe timer not be reset within a one second period, its output will stop the motors and the microprocessor will generate an error message.
Memory 134 is provided to work in conjunction with the microprocessor 110. The memory 134 includes EPROM for the permanent program storage and RAM for temporary storage of program instructions to control infusion and for general memory use. An address latch and decode circuit 136 is provided for interfacing the microprocessor 110 with the memory 134 and status port 116. The lower 8 bits of the microprocessor's address are multiplexed with the data bus, so the address must be latched synchronously with the address latch enable signal in order to distinguish it from data. The decoder portion of circuit 136 allows the microprocessor to enable any chosen one of the devices on the data bus.
The microprocessor 110 operates the motor control and an audio signaller 138. The audio signal may be generated in response to an alarm condition or to annunciate events such as a key press or serial link connect. Communication with the various motors in the infusion pump is handled through the output circuitry 140 and the input circuitry 142. The motor control input output circuitry communicates with the motors over a bus 144.
Each of the motors in the infusion pump is provided with circuitry for driving and controlling that motor. The circuit details of the presently preferred embodiment are shown in FIG. 19 for all of the motor driving control circuitry. The circuitry is the same for each one of the motors. A start signal from the microprocessor is received and latched in the control latch 146. This is passed to the one shot 148 where a signal is produced for operating a motor drive 150 in the forward direction. On the forward direction transistors Q2 nd Q5 shown in FIG. 19 are biased on. The motor drive may be an H bridge circuit so that it can produce a positive or negative signal to the motor.
The motor rotates in response to the signal from the motor drive 150 remaining on until the stop position is reached, as indicated by the optical sensor. The optical sensor 152 includes a light emitting diode 57 and a photodetector 59, which in the presently preferred embodiment is a phototransistor. When the motor shaft is in the stop position, the light from the LED is visible to the phototransistor and a signal is provided by the sensor indicating that the motor shaft is in its stop position. Once the motor shaft moves, the open sector in the position encoder rotates away from the optical sensing region and the solid portion of the position encoder blocks the light from the LED to the phototransistor 59. Once a complete cycle of the motor shaft has been made, an open sector of the position encoder reaches the optical sensing portion and the light from the LED becomes once again visible to the phototransistor. Thus, the optical sensor produces a signal indicating the stop position has been reached.
This stop signal resets the control latch 146, removing drive from Q2 and Q5. When the control latch 146 is reset, its output signal to the one shot 148 goes high and a signal opposite in polarity to the start signal is provided by the one shot to the motor drive 150. This opposite polarity signal causes the motor drive to operate in reverse for a time controlled by the RC time constant of R4 and C2. In the presently preferred embodiment, the reverse signal operates for about 36 milliseconds. The optical sensor sends a "complete" signal to the microprocessor so that it knows a revolution has been completed.
The microprocessor is operating a counter, waiting for the complete signal to be returned within sixteen control program cycles. If it isn't, an error message is generated. When a motor is idle, compliance is confirmed by reading the optical sensor signal to ascertain shaft position. Should the optical sensor provide a signal indicating the motor shaft has moved from its stop position, an off-line error is displayed by the processor. Should the optical sensor signal subsequently indicate the stop position has been reached, it is assumed that the motor is in a run-a-way condition and an alarm and error display is generated. Idle state monitoring is performed during the normal program control cycle and so occurs at the 16 Hz rate.
An occlusion monitor 154 is also provided. If the motor is having difficulty turning because of an occlusion in the catheter line or some other blockage, a signal will be fed from the motor drive 150 to the occlusion monitor 154. Referring to FIG. 19, this will be in the form of an increase in the motor current which flows through a 1 ohm resistor, R17. The voltage across R17 is sensed at a time when the pump plunger 48 is maximally depressed, since the motor current is proportional to load, occlusion can be sensed by comparing the voltage across R17 to a level consistent with normal operation. Reference voltage VTH2 in the occlusion monitor 154 represents the normal level.
VTH2 is provided by the occlusion reference 155. Rather than provide a fixed VTH2, the reference circuit 155 makes VTH2 a function of the battery voltage. In this manner, occlusion sensing is not sensitive to changing battery voltage. VTH2 is taken from a voltage divider formed by resistors R23 and R81. The voltage across R17 is amplified and filtered by amplifier U3B. The gain of U3B can be set by the value of R14 to be consistent with the value of VTH2, thereby causing comparator U3A to change state at the proper level of occlusion. Comparator U3A provides an "occlude" output when the output of U2B exceeds the normal established by VTH2. This will cause a signal to be sent over the bus 144 to the microprocessor. On detection of the occlusion signal, the microprocessor will send a stop signal to the motor, suspend the current infusion schedule and display the error condition on the infuser display. Since an increase in current across R17 will be caused by starting or stopping the motor, the microprocessor will not check the occlusion signal during those time frames. The microprocessor is programmed to check the occlusion signal only when the motor is at the stage where it is pushing down on the pump plunger 48.
As demonstrated by the above description, it is possible with the present invention to use a direct current motor in conjunction with the position encoder so as to achieve accurate infusion rates. Since one complete cycle of the motor can be repeated with precision and since the volume of fluid pumped during a complete cycle is accurately determinable, the volume per unit time can be precisely controlled by the microprocessor controlled infusion pump of the present invention by regulating the number of pump cycles per unit time.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. For example, a combination of dynamic braking and reverse pulsing could be used to stop the motor. Also, the brake pulse width and, therefore, the energy expended could be modified by use of other sensing positions on the motor output shaft. Hall effect sensors and small magnets could be used to sense shaft position. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles M. | Busak, Steven J. | Hayob, Wayne | Papic, Ferrell D. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles M. | Busak, Steven J. | Hayob, Wayne | Papic, Ferrell D. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Kienholz Charles M.,San Dimas,CA,US | Busak Steven J.,Laguna Niguel,CA,US | Hayob Wayne,Mission Viejo,CA,US | Papic Ferrell D.,Orange,CA,US | | Inventor Count: 5 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Bertsch, Richard A. / Scheuermann, David W. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1992-07-21 | | Publication Month: 07 | | Publication Year: 1992 | | Application Number: US1989351981A | | Application Country: US | | Application Date: 1989-05-15 | | Application Month: 05 | | Application Year: 1989 | | Application with US Provisional: US1989351981A | 1989-05-15 | | Priority Number: US1988216512A | US1989301628A | | Priority Country: US | US | | Priority Date: 1988-07-08 | 1989-01-24 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | 01 | | Priority Year(s): 1988 | 1989 | | Earliest Priority Year: 1988 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US1988216512A
| 1988-07-08
| US4950245A
| 1990-08-21
| Continuation-in-part
| Granted
|
P
| US1989301628A
| 1989-01-24
| US5011378A
| 1991-04-30
| Continuation-in-part
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 5/14228
A61M 5/142
| A61M 5/14244
A61M 5/16827
A61M 2205/12
Y10S 128/12
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 417002, 128DIG12, 417012, 417018, 417045, 417234, 417474, 417478, 604065, 604153 | | US Class (divided): 417/002, 128/DIG12, 417/012, 417/018, 417/045, 417/234, 417/474, 417/478, 604/065, 604/153 | | US Class - Main: 417002 | | US Class - Original: 417002 | 417012 | 417018 | 417045 | 417234 | 417474 | 417478 | 604065 | 604153 | 128DIG12 | | ECLA: A61M0005142G6, A61M0005142, K61M0005168A11, K61M0005142P, K61M020512 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4950245A
| 1990-08-21
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Multiple fluid cartridge and pump |
| |
US4705506A
| 1987-11-10
| Archibald G. Kent
| MINNESOTA MINING & MFG
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| Title: Linear peristaltic pumping apparatus and disposable casette therefor |
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| IVAC CORP
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| 0 (Examiner)
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| Title: METHOD FOR FLOW CONTROL MONITORING |
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| | Count of Citing Patents: 94 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2004-01-20
| FPAY
| +
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| Description: FEE PAYMENT |
| |
2000-01-21
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1996-02-27
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-01-22
| FPAY
| +
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| Description: FEE PAYMENT |
| |
1990-02-23
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:KIENHOLZ, CHARLES M.; REEL/FRAME:005459/0044 1989-07-05 |
| |
1990-02-23
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNORS:BROWN, ERIC W.; HAYOB, WAYNE; PAPIC, FERRELL D.; REEL/FRAME:005459/0040 1990-06-06 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,IRVINE,CA,US
| BROWN, ERIC W.
| 1990-06-06
| 005459/0040
| 1990-02-23
|
HAYOB, WAYNE
| 1990-06-06
|
PAPIC, FERRELL D.
| 1990-06-06
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, & CUSHMAN 130 WATER STREET BOSTON, MA 02109 |
| |
I-FLOW CORPORATION,IRVINE,CA,US
| KIENHOLZ, CHARLES M.
| 1989-07-05
| 005459/0044
| 1990-02-23
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, & CUSHMAN 130 WATER STREET BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,IRVINE,CA,US
| BROWN, ERIC W.
| 1990-06-06
| 005459/0040
| 1990-02-23
|
HAYOB, WAYNE
| 1990-06-06
|
PAPIC, FERRELL D.
| 1990-06-06
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Reassignment (US) - Corresponent - Latest: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, & CUSHMAN 130 WATER STREET BOSTON, MA 02109 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
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| 19920721
| Brown Eric W.
| I FLOW CORP
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| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
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| Brown Eric W.
| I FLOW CORP
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| Title: Cartridge-type programmable ambulatory infusion pump |
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EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
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| Title: Cartridge-type programmable ambulatory infusion pump |
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JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
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| Title: INJECTION PUMP DEVICE |
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US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
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| Title: Multiple fluid cartridge and pump |
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US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5131816A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5131816A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 4/43 | | US4950255A | Catheter connector and clamp | | Publication Number: US4950255A | | Title: Catheter connector and clamp | | Title (Original): Catheter connector and clamp | | Title (English): Catheter connector and clamp | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Catheter connector and clamp has interlocking hook and post joining two parts together with manifold separating lumens of catheter | Abstract:
A combination catheter connector and clamp provided with an interlocking hook and post for locking two connector parts together. A manifold separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp. A silicone block is used between the engagement portions of the connector parts. | Abstract (English):
A combination catheter connector and clamp provided with an interlocking hook and post for locking two connector parts together. A manifold separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp. A silicone block is used between the engagement portions of the connector parts. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A combination catheter connector and clamp provided with an interlocking hook and post for locking two connector parts together. A manifold separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp. A silicone block is used between the engagement portions of the connector parts. | | Abstract (Spanish): | Claims:
We claim:
1. A multilumen connector part comprising:
*
a housing having a plurality of engagement parts at one end and means for receiving a multilumen catheter at an other end;
*
a manifold having a plurality of compressible and resilient conduits within said housing, said manifold providing independent fluid communication between each lumen of said multilumen catheter and a different one of said conduits and said conduits each leading to a different one of said plurality of engagement ports; and
*
clamping means attached to said housing for selectively closing off said plurality of conduits by pushing against all of said conduits in an area of said housing where said conduits are arranged in a non-overlapping manner.
2. The multilumen connector part of claim 1 wherein said clamping means comprises a pushbutton having flow restrictor members which close off said plurality of conduits when said pushbutton is held in a closed position.
3. The multilumen connector part of claim 2 wherein said pushbutton further includes guide members for riding up and down in slots formed in said housing.
4. The multilumen connector part of claim 2 wherein said pushbutton further includes a ledge engaging said housing to hold said pushbutton against said housing when said pushbutton is in a closed position.
5. The multilumen connector part of claim 1 further comprising post means extending from said housing so as to be available for making locking engagement with a second multilumen connector part.
6. The multilumen connector part of claim 1 further comprising a resilient sealing block secured within said housing for forming the engagement ports.
7. A catheter connector comprising:
*
a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter;
*
post means extending out from one of said first or second lock adapters; and
*
hook means attached to the other of said first or second lock adapters so that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
8. The catheter connector of claim 7 further comprising clamp means attached to said first lock adapter for selectively closing each said conduit in said first lock adapter.
9. The catheter connector of claim 8 wherein said clamp means comprises a pushbutton attached to said housing and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
10. The catheter connector of claim 9 wherein said pushbutton further includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
11. The catheter connector of claim 7 wherein said hook means comprises a member having a hook at one end and a rotatable attachment at an other end.
12. The catheter connector of claim 7 wherein said second lock adapter further includes a penetrable self-sealing septum covering each conduit in said second lock adapter.
13. The catheter connector of claim 12 further comprising a needle holder having a needle for each conduit in said second lock adapter, each needle being insertable through said septum so as to be put in communication with a conduit in said second lock adapter.
14. The catheter connector of claim 7 further comprising a resilient sealing block for connecting the engagement portion of said second lock adapter to the engagement ports of said first lock adapter.
15. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
post means extending from said housing so as to be available for making locking engagement with a second catheter connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
16. The catheter connector part of claim 15 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position.
17. The catheter connector part of claim 15 wherein said pushbutton includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
18. The catheter connector part of claim 15 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
19. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
hook means for making locking engagement with a second multilumen connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
20. The catheter connector part of claim 19 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
21. The catheter connector part of claim 20 wherein said pushbutton includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
22. The catheter connector part of claim 20 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
23. The catheter connector part of claim 22 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position. | | Claims Count: 23 | Claims (English):
We claim:
1. A multilumen connector part comprising:
*
a housing having a plurality of engagement parts at one end and means for receiving a multilumen catheter at an other end;
*
a manifold having a plurality of compressible and resilient conduits within said housing, said manifold providing independent fluid communication between each lumen of said multilumen catheter and a different one of said conduits and said conduits each leading to a different one of said plurality of engagement ports; and
*
clamping means attached to said housing for selectively closing off said plurality of conduits by pushing against all of said conduits in an area of said housing where said conduits are arranged in a non-overlapping manner.
2. The multilumen connector part of claim 1 wherein said clamping means comprises a pushbutton having flow restrictor members which close off said plurality of conduits when said pushbutton is held in a closed position.
3. The multilumen connector part of claim 2 wherein said pushbutton further includes guide members for riding up and down in slots formed in said housing.
4. The multilumen connector part of claim 2 wherein said pushbutton further includes a ledge engaging said housing to hold said pushbutton against said housing when said pushbutton is in a closed position.
5. The multilumen connector part of claim 1 further comprising post means extending from said housing so as to be available for making locking engagement with a second multilumen connector part.
6. The multilumen connector part of claim 1 further comprising a resilient sealing block secured within said housing for forming the engagement ports.
7. A catheter connector comprising:
*
a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter;
*
post means extending out from one of said first or second lock adapters; and
*
hook means attached to the other of said first or second lock adapters so that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
8. The catheter connector of claim 7 further comprising clamp means attached to said first lock adapter for selectively closing each said conduit in said first lock adapter.
9. The catheter connector of claim 8 wherein said clamp means comprises a pushbutton attached to said housing and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
10. The catheter connector of claim 9 wherein said pushbutton further includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
11. The catheter connector of claim 7 wherein said hook means comprises a member having a hook at one end and a rotatable attachment at an other end.
12. The catheter connector of claim 7 wherein said second lock adapter further includes a penetrable self-sealing septum covering each conduit in said second lock adapter.
13. The catheter connector of claim 12 further comprising a needle holder having a needle for each conduit in said second lock adapter, each needle being insertable through said septum so as to be put in communication with a conduit in said second lock adapter.
14. The catheter connector of claim 7 further comprising a resilient sealing block for connecting the engagement portion of said second lock adapter to the engagement ports of said first lock adapter.
15. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
post means extending from said housing so as to be available for making locking engagement with a second catheter connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
16. The catheter connector part of claim 15 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position.
17. The catheter connector part of claim 15 wherein said pushbutton includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
18. The catheter connector part of claim 15 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
19. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
hook means for making locking engagement with a second multilumen connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
20. The catheter connector part of claim 19 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
21. The catheter connector part of claim 20 wherein said pushbutton includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
22. The catheter connector part of claim 20 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
23. The catheter connector part of claim 22 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multilumen connector part comprising:
*
a housing having a plurality of engagement parts at one end and means for receiving a multilumen catheter at an other end;
*
a manifold having a plurality of compressible and resilient conduits within said housing, said manifold providing independent fluid communication between each lumen of said multilumen catheter and a different one of said conduits and said conduits each leading to a different one of said plurality of engagement ports; and
*
clamping means attached to said housing for selectively closing off said plurality of conduits by pushing against all of said conduits in an area of said housing where said conduits are arranged in a non-overlapping manner. | Independent Claims:
1. A multilumen connector part comprising:
*
a housing having a plurality of engagement parts at one end and means for receiving a multilumen catheter at an other end;
*
a manifold having a plurality of compressible and resilient conduits within said housing, said manifold providing independent fluid communication between each lumen of said multilumen catheter and a different one of said conduits and said conduits each leading to a different one of said plurality of engagement ports; and
*
clamping means attached to said housing for selectively closing off said plurality of conduits by pushing against all of said conduits in an area of said housing where said conduits are arranged in a non-overlapping manner.
7. A catheter connector comprising:
*
a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter;
*
post means extending out from one of said first or second lock adapters; and
*
hook means attached to the other of said first or second lock adapters so that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
15. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
post means extending from said housing so as to be available for making locking engagement with a second catheter connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
19. A catheter connector part comprising:
*
a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen;
*
hook means for making locking engagement with a second multilumen connector part;
*
a pushbutton attached to said housing; and
*
flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a combination catheter connector and clamp, in particular, one for use with multilumen catheters
It has been found convenient for patients who are receiving frequent infusions to provide them with a tunneled subcutaneous catheter. Such a catheter is inserted underneath the skin of the patient and then into a vein. A tissue cuff is provided on the catheter near the skin so that the skin may grow into it and hold the catheter in place. A connector part is located on the end of the catheter above the skin into which a mating connector part may be attached to connect the subcutaneously tunneled catheter with an external catheter. The external catheter may be used for infusion of fluids or for extraction of body fluid for testing A separate catheter clamp may be used in conjunction with such a catheter arrangement so as to permit closing off of the passageway through the catheter.
More recently, there has been an introduction of the use of multilumen catheters in subcutaneously tunneled catheter sets. For example, U.S. Pat. No. 4,581,012 discloses a multilumen locking connector for use in a subcutaneously tunneled catheter set. Clamping of such a multilumen catheter is difficult especially if repeated clamping is desired. A multilumen catheter has walls on its interior separating the plurality of lumens. These interior walls make it difficult to completely clamp off a multilumen catheter and the walls are further subject to being crushed or deteriorated from repeated clamping. It is one object of the present invention to provide a clamp for use in a multilumen catheter set.
SUMMARY OF THE INVENTION
The present invention is directed to a catheter connector including a first lock adapter for mating with a second lock adapter. A post extends from one adapter and a hook is attached to the other adapter so that when the hook engages the post, the two adapters become locked together.
In accordance with a feature of the present invention, the connector may be provided with a clamp for closing off the conduits through one of the adapters. The clamp can be conveniently formed by a push button which rides in a couple of slots in one of the lock adapters By providing a clamp in the connector, the present invention advantageously eliminates the need for separate clamps or a single clamp which may damage a multilumen catheter. Particularly advantageous is the use of the clamp in the multilumen embodiment of the present invention. The clamp is used to shut off the conduits within one of the lock adapters In this manner, no stress is exerted upon the interior walls of a multilumen catheter.
A further advantage of the present invention is that it may be provided with a self-sealing septum which gives the implanted catheter a closed system having no exposure to the air. The septum is penetrated by a needle for providing communication between an external catheter and the implanted catheter.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of the combination catheter connector and clamp of the present invention.
FIG. 2 is an elevational view of the combination catheter connector and clamp of FIG. 1.
FIG. 3 is a plan view in partial cross-section of the combination catheter connector and clamp of FIG. 1.
FIG. 4 is an elevational view in partial cross-section of the multilumen catheter connector and clamp of FIG. 1.
FIG. 5 is an exploded view of an alternate embodiment of the combination catheter connector and clamp of the present invention.
FIG. 6 is a cross-sectional view of the patient connector part of the present invention.
FIG. 7 is a cross-sectional view of the patient connector part of FIG. 6 with the clamp in the open position.
FIG. 8 is a cross-sectional view of the patient connector part of FIG. 6 with the clamp in the closed position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIGS. 1 and 2, the combination catheter connector and clamp is shown. A patient connector part 10 is lock adapter attached to a catheter 11 which has been implanted in a patient. A pushbutton clamp 12 is provided in the patient connector part 10 The patient connector part 10 includes conduits providing communication with the lumen or lumens in the implanted catheter 11. The pushbutton clamp 12 is used to close off the conduit or conduits within the patient connector part 10 so as to close off the implanted catheter 11. The patient connector part 10 further includes a locking post 14 which is used when the patient connector part 10 is locked onto a lock adapter referred to herein as the drug connector part 20. The drug connector part 20 is attached to an external catheter 21. The external catheter 21 could be used in connection with an infusion pump for infusing fluid into a patient through the implanted catheter.
The drug connector part 20 carries an interlock 22 which has a handle 24 and a hook 26. The interlock 22 is rotatably connected to the connector 20 about shafts 28. The interlock 22 is shown in solid lines in the locked position with the hook 26 engaging the locking posts 14 of the patient connector 10. The locking posts 14 may be made in the shape of a cross or other equivalent shape to form a ledge that positively engages the hook 26. In the locked position, the lumens of the implanted catheter 11 are in communication through the connector with the lumens of the external catheter 21. The connector can be unlocked by squeezing the connector parts together and pulling up on the handle 24 which causes the interlock 22 to swing about the axis formed by the shafts 28 thereby disengaging the hook 26 from the posts 14. The interlock 22 is drawn in dashed lines to show it in an unlocked position.
The patient connector 10 is described in more detail with reference to FIGS. 3 and 4. A plastic housing 30 includes an engagement portion 32 top and bottom manifold covers 34 and a hinge portions 33 connecting the manifold covers to the engagement portion 32. The engagement portion 32 provides solid conduit tubes 38 for each conduit provided by the connector. A connector is chosen for a catheter so that there is one conduit for each lumen in the catheter. In accordance with the preferred embodiment, a resilient sealing block 36 provides the engagement ports 35 for the patient connector part 10. The sealing block 36, preferably made from silicone, is solid except for a conduit for each of the conduits in the connector. The conduits fit over the solid conduit tubes 38 projecting from the engagement portion 32 of the housing 30. Rather than using the hard plastic conduit tubes as engagement ports, the silicone block is used since it is resilient and can therefore accomodate slight manufacturing variations in the formation of the plastic connector parts or deviations created by handling and use of the plastic connector parts. In this manner, it is easier to ensure that two connector parts can be mated.
On the inside of the housing 30, a manifold 40 is placed for providing fluid communication between the conduit tubes 38 and the lumens of the catheter connected to the connector. The extruded catheter tube is molded to the manifold 40 so that each lumen is separately directed through an independent conduit. Each conduit branches off into one of the plurality of arms 42 on the manifold 40. The manifold 40 and its arms 42 are made of a compressible and resilient material such as silicone so as to properly respond to the action of the clamp 12 Silicone is also preferable because of its known compatibility to various drugs and body tissues. Each arm 42 of the manifold 40 fits over the rear of a conduit tube 38 to provide a separate and distinct conduit for each lumen of the catheter from the junction between the catheter and the manifold 40 through to the engagement ports formed by the silicone block 36.
The top manifold cover 34 has a hole 47 through which the pushbutton clamp 12 fits. The bottom manifold cover 34 is provided with two slots 48 within which the pushbutton clamp 12 rides. Referring now to FIGS. 6-8, the pushbutton clamp 12 includes two guide members 50 which ride up and down in the slots 48. The guide members 50, each includes a restraint portion 52 at its end. The restraint portion is expanded with respect to the guide member in order to prevent the pushbutton 12 from coming out of the slots 48 The restraint portion may be formed in the mold for the push button clamp or alternatively the bottoms of the guide members can be heat staked to form the restraint portions after the molding process. The restraint portions 52 ride within a widened portion 49 of the slots. The restraint portions 52 hit up against a shoulder 54 where the widened portion 49 meets the narrow portion of the slots 48. This action as shown in FIGS. 6 and 7 keeps the clamp 12 secured onto the connector.
In manufacture of this connector, the top and bottom manifold covers 34 are swung open along the hinge portions 33. The manifold 40 molded to the patient catheter is attached to the rear of the conduit tubes 38. The top and bottom manifold covers 34 are then swung closed so as to envelope the manifold. The pushbutton clamp 12 is then inserted through the top manifold cover 34 into the slots 48. The restraint portions 52 of the clamp are forced through the narrow portion of the slots 48 until they snap into the widened portion 49. The silicone block 36 is then force fit onto the tubes 38.
The pushbutton clamp 12 further includes a flow restrictor member 56 for each of the arms 42 of the manifold. The flow restrictor members 56 are shorter than the guide members 50 so that when the button 12 is up as in FIGS. 6 and 7 the flow restrictor members 56 do not cause any restriction in the flow of fluids through the arms 42 of the manifold. The flow restrictor members 56 of the preferred embodiment are provided with a clamping ledge 58 which is provided for sliding under a restraining wall portion 60 of the upper manifold cover 34. Thus to effect clamping, the pushbutton 12 is pushed down and forward into the position shown in FIG. 4 so that the clamping ledge 58 engages the wall portion 60. In this position, the flow restrictor members 56 are held down against the arms 42 of the manifold 40 so as to close off the conduits there within as shown in FIG. 8. While the back of the clamp 12 may bow up off the connector housing, the parts are dimensioned to ensure complete closure of the conduits when the clamp is in the closed position.
The drug connector part 20 is now discussed in more detail. As in the patient connector part 10, the drug connector part 20 includes a silicone manifold 40 in this case molded to the external catheter 21. The manifold may be made of silicone or a medical-grade plastic, such as PVC. The arms of the silicone manifold 40 plug onto the interior projections of conduit tubes 62. The outer ends of conduit tubes 62 form the engagement ports for the drug connector part 20. These engagement ports fit into the conduits of the silicone block 36 carried by the patient connector part 10. Thus, the drug connector part provides a conduit for each of the lumens in the external catheter from the catheter through to the engagement ports at the outer ends of the conduit tubes 62. The resiliency of the silicone block 36 permits the engagement portion of the drug connector part 20 to fit over the block and the tube projections to fit into the conduits despite any minor manufacturing tolerances in the formation of the drug connector part. When the engagement ports of the connector parts are fully inserted into the silicone block, the interlock 22 can be brought down into place so that the hook 26 engages the post 14 of the patient connector. A slight compression of the silicone block occurs to ensure a good seal.
In accordance with an alternate embodiment of the present invention, rather than providing a drug connector part connected to a multilumen catheter, an injection connector part 70 may be used for interacting with a needle holder 78 as shown in FIG. 5. The needle holder 78 may be provided with single lumen lines 74 connected to injection ports 75 permitting the use of a syringe to repeatedly inject a drug solution through an injection port and into any one of the lumens of the patient catheter. The injection connector part 70 has a housing which surround conduit tubes 62. The conduit tubes 62 form the engagement ports at their outer ends as in the drug connector part. A silicone self-sealing septum 76 is provided for insertion into the rear of the housing 70 so that the rear of the conduit tubes 62 fit into matching holes in the septum 76. An interlock 22, not shown, is rotatably attached to the connector part housing at shafts 28. Thus, the injection connector part may be plugged into the patient connector part and locked thereto by the interlock 22. This will provide a closed system for the patient The self-sealing septum 76 will prevent air from entering the conduits which lead into the patient's multilumen catheter.
The needle holder 78 is provided with needles 80 aligned for insertion through the septum 76 and into the conduit tubes 62. When the septum 76 is penetrated by the needles, the needles extend through the septum to provide communication between the conduit tubes 62 and the single lumen lines 74 at the rear of the needles 80. Each needle 80 has a single lumen line 74 in communication therewith. The single lumen lines 74 are attached to the rear of the needle holder 78. At the other end of each catheter is a luer connector 82 which is provided with its own self-sealing septum 84. The septum 84 and luer connectors 82 form the injection ports 75. Injections may be made by a syringe needle through the self-sealing septum 84 of one of the single lumen lines connected at the rear of the needle holder 78. This permits selective injection of fluids into the individual lumens of an implanted multilumen catheter.
Of course, it should be understood that various changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. For example, a spring biased clamp may be used to replace the pushbutton clamp on the patient connector part. This and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Kienholz Charles,San Dimas,CA,US | Robinson Earl F.,El Toro,CA,US | Bare Rex O.,Irvine,CA,US | | Inventor Count: 4 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Sykes, Angela D. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1990-08-21 | | Publication Month: 08 | | Publication Year: 1990 | | Application Number: US1988178673A | | Application Country: US | | Application Date: 1988-04-07 | | Application Month: 04 | | Application Year: 1988 | | Application with US Provisional: US1988178673A | 1988-04-07 | | Priority Number: US1988178673A | | Priority Country: US | | Priority Date: 1988-04-07 | | Priority Date - Earliest: 1988-04-07 | | Priority Month: 04 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M003900, A61M003910, A61M003928, F16L003756 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M003900
| A
| A61
| A61M
| A61M0039
| A61M003900
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
A61M003928
| A
| A61
| A61M
| A61M0039
| A61M003928
|
F16L003756
| F
| F16
| F16L
| F16L0037
| F16L003756
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| F16L 37/56
A61M 39/10
A61M 39/284
| A61M 2039/1027
A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604250, 439372, 604533, 604283 | | US Class (divided): 604/250, 439/372, 604/533, 604/283 | | US Class - Main: 604250 | | US Class - Original: 604250 | 604283 | | ECLA: A61M003910, A61M003928C, F16L003756, K61M003910F, K61M003910W | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
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| 1987-10-20
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Multilumen catheter set |
| |
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| 1984-01-10
| Bilstad Arnold C.
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: Flow control mechanism for a plasmaspheresis assembly or the like |
| |
US3747632A
| 1973-07-24
| Kok Albertus Jacobus Theodorus
| IPP IND POLYMER PROCESSING SA
| -
| 0 (Examiner)
|
| Title: FLUID CONDUITS |
| |
CH830081A
| -
| -
| -
| -
| 0 (Examiner)
|
| |
US4581012A
| 1986-04-08
| Brown Eric W.
| I FLOW CORP
| YD
| 0 (Examiner)
|
| Title: Multilumencatheter set |
| |
US4429852A
| 1984-02-07
| Tersteegen Bernd
| TERSTEEGEN BERND
| -
| 0 (Examiner)
|
| Title: Adapter |
| |
US4187846A
| 1980-02-12
| Lolachi Houshang
| UNION CARBIDE CORP
| -
| 0 (Examiner)
|
| Title: Sterile connectors |
| |
US4695273A
| 1987-09-22
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
US4616802A
| 1986-10-14
| Tseng Charles C.
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: Tubing occluder |
| |
US4367740A
| 1983-01-11
| Evanoski III Constant J.
| EVANOSKI III CONSTANT J
| -
| 0 (Examiner)
|
| Title: Combination catheter cystometer system and gastric feeding device |
| |
US4257416A
| 1981-03-24
| Prager David
| PRAGER DAVID
| -
| 0 (Examiner)
|
| Title: Multi-channel venipuncture infusion set |
| |
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| HYUN DONGCHUL D
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US8157851B2
| 2012-04-17
| ANDREAS BERNARD H
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US8221388B2
| 2012-07-17
| SWISHER DAVID R
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US8267370B2
| 2012-09-18
| FISHER MARK S
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US8403004B2
| 2013-03-26
| HYUN DONGCHUL D
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US8419694B2
| 2013-04-16
| BRAGA RICHARD M
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US8523828B2
| 2013-09-03
| CALLAHAN MARK
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US8585096B2
| 2013-11-19
| SCHNELL WILLIAM J
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| 2014-02-04
| SHAFER HELEN ZINREICH
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| 2014-02-11
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| 2014-02-18
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| 2014-03-04
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US8668342B2
| 2014-03-11
| SHAFER HELEN ZINREICH
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US8668343B2
| 2014-03-11
| SHAFER HELEN ZINREICH
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US8668344B2
| 2014-03-11
| SHAFER HELEN ZINREICH
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US8668345B2
| 2014-03-11
| SHAFER HELEN ZINREICH
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US8672490B2
| 2014-03-18
| SHAFER HELEN ZINREICH
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US8740877B2
| 2014-06-03
| BORLAUG TOM
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US8747371B2
| 2014-06-10
| STREATFIELD GILL STEVEN
|
US8876798B2
| 2014-11-04
| CLARK GEOFF
|
USD431651S1
| 2000-10-03
| Incutech Inc.
|
USD661388S1
| 2012-06-05
| CLARK GEOFF
|
USRE39499E1
| 2007-02-27
| EPIMED INT INC
|
WO1994005353A1
| 1994-03-17
| DEKNATEL TECH CORP
|
| | Count of Citing Patents: 48 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
2002-02-21
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1998-02-23
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1994-02-07
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1988-07-05
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION,CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNORS:ROBINSON, EARL, F.; BROWN, ERIC W.; BARE, REX O.; AND OTHERS; REEL/FRAME:004907/0795 1988-06-28 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION,IRVINE,CA,US
| ROBINSON, EARL, F.
| 1988-06-28
| 004907/0795
| 1988-07-05
|
BROWN, ERIC W.
| 1988-06-28
|
BARE, REX O.
| 1988-06-28
|
KIENHOLZ, CHARLES
| 1988-06-28
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER STREET BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4950255A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
EP340427A2
| 19891108
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
EP340427A3
| 19900919
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Catheter connector and clamp |
| |
JP2029270A
| 19900131
| BROWN ERIC W
| I FLOW CORP
|
| Title: CONNECTOR FOR CATHETER |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4950255A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4950255A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 5/43 | | US4759527A | Infusion pump valve | | Publication Number: US4759527A | | Title: Infusion pump valve | | Title (Original): Infusion pump valve | | Title (English): Infusion pump valve | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Infusion pump valve used during chemotherapy has flow restrictor positioned within central bore at open end of housing, restrictor being controlled by solenoids | Abstract:
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | Abstract (English):
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | | Abstract (Spanish): | Claims:
We claim:
1. A disposable sterilizable valve comprising:
*
a hollow housing having an open end, a partially closed end having an open slot with a length and a width which is shorter than the length, a central bore and an outlet providing an opening in the central bore through a side of said housing;
*
a sealing member slidably mounted within said central bore;
*
a plunger stem having one end connected to said sealing member and an other end extending through the open slot in the partially closed end of said housing, said plunger stem further including a cross-piece at its other end to make said other end T-shaped, said cross-piece having a length which is greater than the width of the open slot and less than the length of said open slot and having a width which is less than the width of the open slot; and
*
a spring positioned in the central bore surrounding said plunger stem, one end of said spring pushing against the partially closed end of said housing and the other end of said spring pushing against said sealing member so as to force said sealing member into a position which closes the outlet.
2. The disposable valve of claim 1 further comprising a flow restrictor positioned within the central bore at the open end of said housing to restrict the flow of fluid between the open end of said housing and said central bore.
3. The disposable valve of claim 1 wherein said plunger stem is integral with said sealing member.
4. The disposable valve of claim 1 further comprising tab means extending from the open-end of said housing so as to form said housing into a female luer lock fitting. | | Claims Count: 4 | Claims (English):
We claim:
1. A disposable sterilizable valve comprising:
*
a hollow housing having an open end, a partially closed end having an open slot with a length and a width which is shorter than the length, a central bore and an outlet providing an opening in the central bore through a side of said housing;
*
a sealing member slidably mounted within said central bore;
*
a plunger stem having one end connected to said sealing member and an other end extending through the open slot in the partially closed end of said housing, said plunger stem further including a cross-piece at its other end to make said other end T-shaped, said cross-piece having a length which is greater than the width of the open slot and less than the length of said open slot and having a width which is less than the width of the open slot; and
*
a spring positioned in the central bore surrounding said plunger stem, one end of said spring pushing against the partially closed end of said housing and the other end of said spring pushing against said sealing member so as to force said sealing member into a position which closes the outlet.
2. The disposable valve of claim 1 further comprising a flow restrictor positioned within the central bore at the open end of said housing to restrict the flow of fluid between the open end of said housing and said central bore.
3. The disposable valve of claim 1 wherein said plunger stem is integral with said sealing member.
4. The disposable valve of claim 1 further comprising tab means extending from the open-end of said housing so as to form said housing into a female luer lock fitting. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A disposable sterilizable valve comprising:
*
a hollow housing having an open end, a partially closed end having an open slot with a length and a width which is shorter than the length, a central bore and an outlet providing an opening in the central bore through a side of said housing;
*
a sealing member slidably mounted within said central bore;
*
a plunger stem having one end connected to said sealing member and an other end extending through the open slot in the partially closed end of said housing, said plunger stem further including a cross-piece at its other end to make said other end T-shaped, said cross-piece having a length which is greater than the width of the open slot and less than the length of said open slot and having a width which is less than the width of the open slot; and
*
a spring positioned in the central bore surrounding said plunger stem, one end of said spring pushing against the partially closed end of said housing and the other end of said spring pushing against said sealing member so as to force said sealing member into a position which closes the outlet. | Independent Claims:
1. A disposable sterilizable valve comprising:
*
a hollow housing having an open end, a partially closed end having an open slot with a length and a width which is shorter than the length, a central bore and an outlet providing an opening in the central bore through a side of said housing;
*
a sealing member slidably mounted within said central bore;
*
a plunger stem having one end connected to said sealing member and an other end extending through the open slot in the partially closed end of said housing, said plunger stem further including a cross-piece at its other end to make said other end T-shaped, said cross-piece having a length which is greater than the width of the open slot and less than the length of said open slot and having a width which is less than the width of the open slot; and
*
a spring positioned in the central bore surrounding said plunger stem, one end of said spring pushing against the partially closed end of said housing and the other end of said spring pushing against said sealing member so as to force said sealing member into a position which closes the outlet. | Description:
BACKGROUND OF THE INVENTION
This invention relates to infusion pumps. There are many applications for which there is a need for a device which can intravenously administer a plurality of drug solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often if different drug solutions are used, they are administered by using a separate catheter tube for each drug. A separate infusion pump would be used on each individual catheter tube line and the tube would deliver the fluid solution into the patient through its respective intravascular access needle. A patient must pay for each catheter set and must rent a pump for use with the catheter tube. Therefore, it is costly to use multiple catheter tubes and pumps.
Some physicians administer chemotherapy treatments with a plurality of drug solutions by mixing the solutions together and feeding the mixture into the patient through a single catheter set and pump. If the different drug solutions are compatible they can be mixed and delivered through a single catheter. Unfortunately, there are only a limited number of drug combinations which can be used in this manner. Many drugs cannot be mixed together prior to infusion. Some drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient.
It is desirable to provide a single pump that can deliver a multiplicity of drug solutions without mixing any of them prior to infusion. It is especially desirable for the pump to be lightweight so that it might be used on an ambulatory patient. U.S. Pat. No. 4,313,439 (Babb et al.) recognized the need for lightweight infusion pumps in a single drug delivery system. Babb et al. provided an escapement mechanism which applied a continuous pressure to a syringe. A constrictor acted on a catheter tube to prevent fluid from passing through the tube except during periods when the force from the constrictor was released to allow fluid through the tube.
SUMMARY OF THE INVENTION
This invention is directed to an infusion pump containing a compressible fluid source having an outlet which is normally blocked by a valve. A pressurized source of gas is fed through a pressure regulator and then against the fluid source to urge fluid against the valve. The valve may be opened to allow fluid to flow through the outlet.
The present invention is especially adapted for use with a plurality of compressible fluid sources. Control means are provided for selectively opening the valves to the sources. According to the present embodiment of the invention, a conduit is provided from the pressure regulator to the fluid source. The preferred sources are syringes. The syringes are sealed so that only the pressurized gas directed through the conduit is allowed into the tops of the syringes.
A disposable sterilizable valve of the present invention is connected to the bottom of each of the syringes. The valve of the present invention includes a hollow housing and a sealing member which is slidably mounted within a cylindrical bore inside the housing. The sealing member is connected to a plunger stem that has a T-shaped end which extends through a hollow slot in the bottom of the housing. A spring biases the sealing member away from the wall of the housing and into a closed position which prevents fluid from leaving through an outlet conduit in the side of the housing. The valve can be opened by pulling on the T-shaped end of the plunger stem. A flow restrictor is provided at the opposite end of the central bore to restrict the flow of fluid into the housing.
The pump of the present invention is light in weight since it is powered mostly by the pressurized gas. The only moving parts are the valves. This advantageously minimizes the chances of having any mechanical problems. Furthermore, this minimizes the need for electric power so that a very light battery package is sufficient to run the device. The construction of the present invention is easily adapted for use in multiple fluid infusions. The control means gives doctors a wide latitude in choosing their regimens, any of which may be programmed into the device.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiment of the invention, taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a substantially cut away view of the pump of the present invention.
FIG. 2 is a cross-sectional view of the pump of FIG. 1 taken along lines 2--2.
FIG. 3 is a perspective view of a syringe for use with the present invention.
FIG. 4 is a perspective view of the syringe of FIG. 3 with its needle and plunger stem removed.
FIG. 5 is a cross-sectional view of the valve of the present invention in the closed position.
FIG. 6 is a cross-sectional view of the valve of FIG. 5 in the open position.
FIG. 7 is a bottom view of the valve of FIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIGS. 1 and 2, the infusion pump 10 of the present invention is illustrated. The pump is powered by a supply of compressed gas under high pressure. The supply is carried in canister 12. The canister may be replaced as needed to insure a supply of gas capable of pumping the contents of all of the fluid sources within the pump. The gas canister 12 is connected to a pressure regulator 14. The regulator 14 accepts the high pressure from the canister 12 and produces a continuous low pressure for use in the pump. The regulator 14 has a switch 15 which may be turned on, off, or to purge. In purge, the gas supply can be emptied through a pressure relief valve 16. The preferred embodiment is an ambulatory pump. For this purpose, the canister 12 is expected to be the most convenient source of a constant pressure. In a stationary device it may be possible to replace the canister with a central line that supplies a source of gas pressure. It may also be appropriate under certain circumstances to use mechanical means of providing a continuous source of pressure.
The gas pressure acts on a compressible fluid source to urge the fluid source out of its container. According to the preferred embodiment of the present invention, a syringe 20 such as that shown in FIGS. 3 and 4 may be used as the compressible fluid source. Such a syringe is described in a copending patent application entitled "SYRINGE" invented by Eric W. Brown and sharing the same assignee and filing date as the present application. Said patent application is hereby incorporated by reference within. The pump of the present invention is illustrated with three syringes. Obviously, the pump of the present invention may be constructed with any number of sources from as low as one to as high as would be medically useful.
The described syringe 20 has an elliptical central bore 21 and an elliptical sealing member 22 which is slidable within that bore. A plunger stem 23 may be screwed into or out of the slidable member 22. To use the syringe 20 with the pump of the present invention, a conventional needle 28 is placed on the syringe tip 24 of the syringe 20. The plunger stem 23 at this time is screwed into the slidable member 22 as shown in FIG. 3. The slidable member 22 is pushed all the way against the wall of the syringe barrel and the needle 28 is poked into a desired fluid solution. The plunger stem 23 is pulled back to suck the fluid solution into the syringe 20. When the syringe contains the desired amount of solution, the plunger stem 23 is unscrewed from the slidable member and the needle is taken off the syringe tip 24. The syringe, as illustrated in FIG. 4, is now ready for use in the infusion pump. A syringe is used because it expels fluid upon being compressed. Any compressible fluid source may be used in place of the syringe. The syringe, however, is advantageously efficient in that it is capable of pushing out the entire fluid contents except for a very minor amount that might be left in the syringe tip.
The syringe tip 24 is surrounded by a luer lock fitting 26. This is a standard male luer lock fitting that holds a conventional needle on the syringe. In the pump 10, a valve 30 is placed onto the syringe tip 24 of the syringe 20. The valve 30 is illustrated in FIGS. 5, 6 and 7. The value controls the flow of fluid from its respective syringe 20. The valve 30 is normally closed to prevent fluid from escaping from the syringe 20 since the syringe is continuously under pressure while the pressure regulator 14 is on. A spring 36 within the valve 30 supplies the required pressure to hold the valve closed against the pressure exerted by the fluid from the syringe. Fluid is only allowed to leave the fluid source when the valve 30 is opened.
The valve 30 consists of a hollow housing 31. The valve 30 is made from sterilizable materials. Preferably, an inexpensive plastic material is used so that the valve is disposable. This allows total replacement of the syringes, valves and catheters with each use. By providing disposable valves the time consuming task of repeated sterilization is not required.
Tabs 32 extend from the valve housing 31 and serve as the female luer lock fitting. The tabs 32 engage the threads of the male luer lock fitting 26 so that the valve 30 may be screwed onto a syringe 20. The threads on the syringe 20 should be arranged so that the valve's outlet 44 points in the appropriate direction when the valve is screwed securely on the syringe. The valve 30 has a central bore 33 extending from an open end to a partially closed end of the housing 31. There is a ledge 39 in the central bore against which the syringe tip 24 will be held against when the valve is locked onto the syringe. At the partially closed end of the valve 30, a slot 40 provides an opening through the bottom wall of the housing 31. In construction of the valve, the spring 36 is inserted into the central bore 33. The spring 36 acts as the bias to force the valve normally closed. After the spring is inserted, a slidable sealing member 34 having a T-shaped plunger stem 38 is dropped through the central bore 33. The T-shaped stem 38 fits through the slot 40. Once it is through it may be turned 90° to help prevent it from falling back into the bore 33. The slidable member 34 provides a frictional seal against the walls of the central bore 33 to prevent fluid from leaking.
In the preferred embodiment, a flow restrictor 42 is inserted at the top of the valve 30. The flow restrictor 42 limits the flow of fluid through the valve 30 to a precise small amount. In this manner the amount of fluid solution being infused into a patient may be more accurately determined. As shown in FIG. 5, when the valve is closed the slidable member 34 is biased against the flow restrictor 42. In this position, the slidable member 34 blocks the fluid contents of the syringe from access to an outlet 44 which is provided in a side wall of the hollow housing 31. When the plunger stem 38 is retracted as in FIG. 6, fluid is allowed to flow through the flow restrictor 42, into the central bore 33 and out through the outlet 44. When the plunger stem 38 is released, the slidable sealing member pushes the fluid in the central bore out through outlet 44 and back through flow restrictor 42 until the valve is completely closed and the flow of fluid stops.
The syringe and their valves are accomodated in a pump housing 11. A rubber gasket 18 is connected to the pressure regulator 14 via conduit 17. The gasket 18 shown in FIG. 1 has three stopper-shaped seals for placement into the tops of the syringes 20. The conduit 17 may be three tubes connected together to carry the same pressure from the regulator 14. Alternatively, a single tube with three side outlet tubes may be used to connect the pressure regulator 14 to the three syringes 20. The conduit 17 is provided from the pressure regulator 14 to and through the centers of each of the stopper-shaped seals. The gasket 18 seals off each syringe 20 from the atmosphere. Each syringe 20 is subjected solely to the pressure provided from the regulator 14.
At the end of the housing opposite where the pressurized canister 12 and pressure regulator 14 are located, there are three solenoids 48. Any similarly functioning electromechanical device may be substituted for the solenoids 48. The movable core of the solenoid is provided with a clamp into which the plunger stem 38 of the valves may be snapped. When the solenoid 48 is energized the movable core is pulled downward, pulling the valve stem 38 with it to open the valve 30 and allow fluid to flow.
A catheter 52 is bonded in a conventional manner to the outlet 44 of each of the valves 30. According to the preferred embodiment, the other end of each catheter is fitted into a multilumen adapter 50. Any standard multilumen adapter may be used. The adapter connects each of the catheters 52 to a separate lumen in a multilumen catheter 53. The multilumen catheter 53 is connected to the adapter 50 for conducting fluids into the patient. It is preferred that the multilumen catheter be reinforced to prevent it from kinking. The preferred catheter set for use with the pump of the present invention is described in copending application entitled MULTILUMEN CATHETER SET sharing the same inventors, assignee and filing date as the present invention. The disclosure of said application is incorporated by reference herein. It is also possible to use separate single catheters from each of the fluid sources, however, this would require a separate intravascular access point for each tube, thereby becoming rather cumbersome and undesirable.
Each solenoid is connected to a printed circuit board 64. A control unit is provided on the circuit board 64. The control unit contains a microprocessor or other equivalent programmable controller for selectively activating the solenoids. The preferred ambulatory embodiment of the pump is provided with a flat lightweight battery package 60 which takes up a minimum amount of space and provides sufficient power to run the solenoids and the control circuitry. A shield 58 is provided to protect the electronic circuitry from any stray fluids. The shield 58 physically separates the electronic circuitry from the syringes. An interface 62 is also provided to allow the pump to interface with a programming device such as a computer or other dedicated programmer. It would also be possible but more cumbersome to provide the programming device within the pump unit itself.
In accordance with the present invention, a unique pump is provided for selectively pumping a plurality of fluid solutions into a catheter tube for infusion into a patient. It will be understood that the details of the control unit form no part of the present invention, except to the extent that it provides one commercially available programmable control means suitable for use in carrying out the steps required by the present invention, the programming techniques for adapting a microprocessor unit to such steps being well known in the microprocessor and programmable control means art.
The pump of the present invention may be programmed to provide fluids in any sequence, in any amount and at any time. The control unit is programmed to provide power to selected solenoids. The duration for which power is provided, the sequence of solenoid selection and the times at which power is provided may be programmed into the control. Pressure is continuously administered to all of the fluid sources. Fluid is infused only when a solenoid is energized to open a valve. The physician is thus given great flexibility in selecting an infusion regimen for a plurality of drug solutions.
The multilumen catheter connected to the pump may be readily attached to the patient via a Hickman apparatus. The pump may be carried by the patient for a couple of months. It is possible for a physician to regulate the administration of a drug regimen during the couple of months by programming the pump of the present invention. The patient will be provided with drug solutions at regularly prescribed intervals as preprogrammed by the physician over that period of time. The pump provides the patient with the freedom to leave his or her bed and still receive a complicated prescription involving more than one drug solution. Since electric power is only needed to periodically operate the solenoids, a small lightweight battery pack is sufficient. This contributes to the light weight of the pump which is especially beneficial to the patient's freedom of movement.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. A switching mechanism might be placed near the pressure regulator to selectively provide pressure to selected syringes, thereby controlling delivery of fluid from the top end rather than the bottom at the valves. As already mentioned any type of compressible fluid source might be used in the present invention as well as any number of such sources. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Rosenthal, Arnold | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1988-07-26 | | Publication Month: 07 | | Publication Year: 1988 | | Application Number: US19874621A | | Application Country: US | | Application Date: 1987-01-20 | | Application Month: 01 | | Application Year: 1987 | | Application with US Provisional: US19874621A | 1987-01-20 | | Priority Number: US1984677849A | | Priority Country: US | | Priority Date: 1984-12-05 | | Priority Date - Earliest: 1984-12-05 | | Priority Month: 12 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US1984677849A
| 1984-12-05
| US4666430A
| 1987-05-19
| Division
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005145 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005145
| A
| A61
| A61M
| A61M0005
| A61M0005145
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
| A61M 5/14526
| A61M 2005/14513
| 20130101
| EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 251118, 251321, 251323, 251324 | | US Class (divided): 251/118, 251/321, 251/323, 251/324 | | US Class - Main: 251118 | | US Class - Original: 251118 | 251321 | 251323 | 251324 | | ECLA: A61M0005145B2, K61M0005145A4 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US3266308A
| 1966-08-16
| HOWARTH THOMAS R
| ECLIPSE FUEL ENG CO
| -
| 0 (Examiner)
|
| Title: Gas meter change-over fitting |
| |
US1820951A
| 1931-09-01
| SLICK EDWIN E
| SLICK EDWIN E
| -
| 0 (Examiner)
|
| Title: Dispensing apparatus |
| |
US2756740A
| 1956-07-31
| DEANE WILLIAM V
| DEANE WILLIAM V
| -
| 0 (Examiner)
|
| Title: Drinking device for hospital patients |
| |
US3089627A
| 1963-05-14
| ALFONS LIPPIG
| ALFONS LIPPIG
| -
| 0 (Examiner)
|
| Title: Closure means for containers |
| |
CH378625A
| 1964-06-15
| PAUL L GLOCKER
| GLOCKER PAUL L
| -
| 0 (Examiner)
|
| Title: Regulierventil |
| |
US2244311A
| 1941-06-03
| NEE RAYMOND M
| NEE RAYMOND M
| -
| 0 (Examiner)
|
| Title: Flow restrictor |
| |
| | Count of Cited Refs - Patent: 6 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
DE19741249A1
| 1999-03-25
| ITT MFG ENTERPRISES INC
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DE3844306A1
| 1990-07-05
| OPEL ADAM AG
|
EP1084360B1
| 2008-07-16
| US ENVIRONMENT
|
EP1814611A1
| 2007-08-08
| INTELLIJECT INC
|
FR2839454A1
| 2003-11-14
| PRIMEBIOTECH
|
US5496287A
| 1996-03-05
| JINOTTI; WALTER J
|
US5505345A
| 1996-04-09
| ZEID; WALEED A
|
US6170524B1
| 2001-01-09
| US ENVIRONMENT
|
US6520936B1
| 2003-02-18
| MEDTRONIC MINIMED INC
|
US8105269B2
| 2012-01-31
| ZHOU YU
|
US8105281B2
| 2012-01-31
| EDWARDS ERIC SHAWN
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US8137083B2
| 2012-03-20
| ZHOU YU
|
US8382447B2
| 2013-02-26
| BAXTER INT
|
US8496613B2
| 2013-07-30
| ZHOU YU
|
US8567235B2
| 2013-10-29
| BOJAN PETER M
|
WO1999061828A1
| 1999-12-02
| US ENVIRONMENT
|
WO2000074751A1
| 2000-12-14
| MEDICAL RES GROUP INC
|
WO2003094992A2
| 2003-11-20
| PRIMEBIOTECH
|
WO2003094992A3
| 2004-04-01
| PRIMEBIOTECH
|
WO2006057636A1
| 2006-06-01
| INTELLIJECT INC
|
| | Count of Citing Patents: 20 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1992-09-29
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 1992-07-26 |
| |
1992-07-26
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
1992-02-25
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
| | Post-Issuance (US): EXPI Expiration 1992-07-26 1992 July 26, 1992 due to failure to pay maintenance fees. | | Maintenance Status (US): E1 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4759527A
| 19880726
| Brown Eric W.
| I FLOW CORP
|
| Title: Infusion pump valve |
| |
US4666430A
| 19870519
| Brown Eric W.
| I FLOW CORP
|
| Title: Infusion pump |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4759527A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4759527A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 6/43 | | US4741736A | Programmable infusion pump | | Publication Number: US4741736A | | Title: Programmable infusion pump | | Title (Original): Programmable infusion pump | | Title (English): Programmable infusion pump | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Programmable medical infusion pump has cartridge containing flexible compartments and fluid pressure roller | Abstract:
A cartridge, a control system and an infusion pump provide an infusion system. The cartridge contains one or more flexible compartments and pressure roller for squeezing fluid from the compartments. When there is a plurality of fluid compartments in the cartridge, a multilumen connector is provided on the cartridge so that it may be connected to a single multilumen catheter. The control system monitors the volume of fluid which is expelled from the fluid filled compartments during the infusion process. Any errors in rate or volume are continually fed back to the infusion pump. Errors exceeding allowable limits cause adjustment to correct for the error in volume so that over a long duration information process desired dosage is infused at an accurately maintained infusion rate. The infusion pump is provided with a constant force spring connected to a sliding member. The sliding member is pulled against the pressure roller of the cartridge to cause a fairly constant flow of fluid from the cartridge during the infusion. The pump is also provided with an optical sensing sytem for determining the position of the pressure roller and thereby the volume of fluid which is being infused. The cartridge has a position indicating strip for use with the optical sensing system in order to provide the position information. | Abstract (English):
A cartridge, a control system and an infusion pump provide an infusion system. The cartridge contains one or more flexible compartments and pressure roller for squeezing fluid from the compartments. When there is a plurality of fluid compartments in the cartridge, a multilumen connector is provided on the cartridge so that it may be connected to a single multilumen catheter. The control system monitors the volume of fluid which is expelled from the fluid filled compartments during the infusion process. Any errors in rate or volume are continually fed back to the infusion pump. Errors exceeding allowable limits cause adjustment to correct for the error in volume so that over a long duration information process desired dosage is infused at an accurately maintained infusion rate. The infusion pump is provided with a constant force spring connected to a sliding member. The sliding member is pulled against the pressure roller of the cartridge to cause a fairly constant flow of fluid from the cartridge during the infusion. The pump is also provided with an optical sensing sytem for determining the position of the pressure roller and thereby the volume of fluid which is being infused. The cartridge has a position indicating strip for use with the optical sensing system in order to provide the position information. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A cartridge, a control system and an infusion pump provide an infusion system. The cartridge contains one or more flexible compartments and pressure roller for squeezing fluid from the compartments. When there is a plurality of fluid compartments in the cartridge, a multilumen connector is provided on the cartridge so that it may be connected to a single multilumen catheter. The control system monitors the volume of fluid which is expelled from the fluid filled compartments during the infusion process. Any errors in rate or volume are continually fed back to the infusion pump. Errors exceeding allowable limits cause adjustment to correct for the error in volume so that over a long duration information process desired dosage is infused at an accurately maintained infusion rate. The infusion pump is provided with a constant force spring connected to a sliding member. The sliding member is pulled against the pressure roller of the cartridge to cause a fairly constant flow of fluid from the cartridge during the infusion. The pump is also provided with an optical sensing sytem for determining the position of the pressure roller and thereby the volume of fluid which is being infused. The cartridge has a position indicating strip for use with the optical sensing system in order to provide the position information. | | Abstract (Spanish): | Claims:
I claim:
1. A multiple fluid cartridge assembly comprising:
*
a housing;
*
a plurality of flexible compartments for containing fluids, each compartment having an outlet through which said fluids are expelled;
*
a pressure roller movable within said housing to compress said plurality of flexible compartments, said pressure roller including engagement means extending from said housing;
*
a plurality of access tubes, each tube connected to the outlet of one of said compartment;
*
a multiple port connector, each port being connected to one of said access tubes; and
*
flow restrictor means for adjustably compressing said plurality of access tubes to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
2. The multiple fluid cartridge of claim 1 further comprising gear means extending from said housing and connected to said flow restrictor means for adjusting the pressure exerted by said flow restrictor means on said plurality of access tubes.
3. The multiple fluid cartridge of claim 1 further comprising a strip having position indicating markings along its length, said strip being arranged on said housing with its length in the direction of movement of said pressure roller.
4. The multiple cartridge of claim 1 further comprising a resilient base within said housing beneath said plurality of compartments and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
5. The multiple cartridge of claim 4 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
6. A fluid dispensing cartridge assembly comprising:
*
a housing;
*
at least one flexible compartment for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a pressure roller movable within said housing to compress said at least one flexible compartment, said pressure roller including means extending from said housing for engagement with a drive mechanism;
*
position indicating markings arranged along the length of said housing in the direction of movement of said pressure roller; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so the rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
7. The fluid dispensing cartridge of claim 6 wherein said position indicating markings are provided on a reflective strip on said housing.
8. The fluid dispensing cartridge of claim 6 further comprising gear means extending from said housing and connected to said flow restrictor means to control the adjustment of the pressure exerted by said flow restrictor means on said plurality of access tubes.
9. The fluid dispensing cartridge of claim 6 further comprising a resilient base within said housing beneath said at least one compartment and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
10. The fluid dispensing cartridge of claim 9 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
11. A fluid dispensing cartridge assembly comprising:
*
a housing having a resilient base;
*
at least one flexible compartment formed on said resilient base for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a roller for compressing said at least one compartment against said resilient base to squeeze fluid out through the outlets of said at least one compartment;
*
means for holding said roller against said base to prevent fluid from leaking within any of said at least one compartments between said roller and said base; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
12. The fluid dispensing cartridge of claim 11 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
13. The fluid dispensing cartridge of claim 11 further comprising gear means extending from said housing and connected to said flow restrictor means to control the adjustment of the pressure exerted by said flow restrictor means on said plurality of access tubes.
14. The fluid dispensing cartridge of claim 11 further comprising a strip having position indicating markings along its length, said strip being arranged on said housing with its length in the direction of movement of said pressure roller.
15. A programmable pump comprising:
*
a housing;
*
a sliding member within said housing;
*
means for applying a substantially constant force to said slidable member;
*
means for detecting the position of said slidable member within said housing;
*
a motor;
*
means, coupled to said motor, for regulating a flow restrictor; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that said slidable member moves through said housing to provide a preprogrammed volume of flow per the time duration of the infusion.
16. The programmable pump of claim 15 wherein said position detecting means comprises an optical emitter and detector carried by said slidable member.
17. The programmable pump of claim 16 wherein said position detecting means further comprises a strip having position indicating markings along its length, said strip being arranged in said housing with its length in the direction of movement of said slidable member and said optical emitter and detector interact with said strip to read the markings thereon as said slidable member moves relative thereto.
18. The programmable pump of claim 15 wherein said means for applying a substantially constant force comprises a constant force spring.
19. The programmable pump of claim 18 wherein said constant force spring comprises a coil prevented from translational movement within said housing having one end connected to said slidable member.
20. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
means for applying pressure coupled to the free end of said constant force spring such that said pressure applying means is pulled against said at least one compartment for pushing fluid therefrom; and
*
flow restrictor means for regulating the flow of fluid out of said at least one compartment;
*
a motor on said pump housing; and
*
gear means connected to said motor for adjusting said flow restrictor means.
21. The infusion pump of claim 20 wherein said pressure applying means comprises a slidable member connected to the free end of said constant force spring and a roller engaged by said slidable member so that said roller is pulled against said at least one compartment for squeezing fluid therefrom.
22. The infusion pump of claim 21 wherein said fluid containing compartment is a flexible compartment formed on a resilient base and said roller is held against said base to prevent fluid from leaking within said compartment between said roller and said resilient base.
23. The infusion pump of claim 20 further comprising:
*
a strip having position indicating markings along its length, said strip being arranged with its length in the direction of movement of said pressure applying means; and
*
an optical emitter and detector carried by said pressure applying means to read the position of said pressure applying means relative to said at least one compartment as said pressure applying means is pulled against said at least one compartment.
24. The infusion pump of claim 23 further comprising programmable controller means responsive to said emitter and detector for controlling said motor to set said flow restrictor means so that fluid is pushed from said at least one compartment at a predetermined rate.
25. The infusion pump of claim 21 wherein said at least one fluid containing compartment is located on a cartridge insertable into said pump housing.
26. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment located on a cartridge insertable into said pump housing;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said constant force spring; and
*
a roller engaged by said slidable member so that said roller is pulled against said at least one compartment for squeezing fluid therefrom, wherein said roller includes an engagement means extending through slots of said cartridge for engaging said slidable member such that when said cartridge is loaded into said pump housing said engagement means engages said slidable member to unwind said constant force spring.
27. A programmable infusion pump comprising:
*
a pump housing for receiving a cartridge housing, said cartridge housing containing at least one flexible fluid containing compartment each compartment having an access tube through which fluid can be expelled;
*
a substantially constant force spring having a free end on the exterior of a coil, said coil mounted within said pump housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said spring;
*
a roller carried in said cartridge housing and engaged by said slidable member for compressing said at least one compartment to squeeze fluid out through the access tubes of said at least one compartment;
*
flow restrictor means for restricting the flow of fluid out through the access tubes;
*
a motor coupled to said flow restrictor means for regulating said flow restrictor means;
*
means for detecting the position of said roller; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that as said roller is pulled through said cartridge housing by said slidable member, a preprogrammed volume of fluid flows out of said at least one flexible compartment per time duration of the infusion.
28. The programmable infusion pump of claim 27 further comprising a strip having position indicating markings along its length, said strip being arranged on said cartridge housing with its length in the direction of movement of said roller.
29. The programmable infusion pump of claim 28 wherein said position detecting means comprises an optical emitter and detector carried by said slidable member to read the position of said slidable member relative to said at least one compartment as said roller is pulled across said at least one compartment, the position of said slidable member being directly related to the position of said pressure roller.
30. The programmable infusion pump of claim 27 wherein said flow restrictor means includes:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hold engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
31. The programmable infusion pump of claim 27 further comprising a multiple port connector, each port being connected to one of said access tubes.
32. The programmable infusion pump of claim 27 wherein said cartridge housing further comprises a resilient base within said housing beneath said at least one compartment and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
33. A method for maintaining a predetermined infusion rate comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a movable member for pushing fluid out of said compartment;
*
counting the amount of time for which said infusion apparatus is being used during the infusion;
*
determining the time it takes said movable member to move from a first position to a second position;
*
determining the volume of fluid infused between the first position and the second position;
*
dividing the volume of fluid infused between the first position and the second position by the amount of time it took to move from the first position to the second position to determine the current infusion rate;
*
comparing the current infusion rate with the predetermined infusion rate; and
*
adjusting the rate of fluid flow from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when said current infusion rate differs from said predetermined infusion rate by more than a predetermined tolerance.
34. The method of claim 33 further comprising locating the position of said movable member by emitting a ray of light at a strip of position indicating markings, receiving any light reflected from said position indicating markings and interpreting the received light to determine the position of said movable member.
35. A method of infusing a predetermined volume of fluid over a predetermined infusion time period comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a means for expelling fluid from said compartment;
*
counting the time as said infusion apparatus is used during an infusion;
*
determining the time it takes to infuse a sample volume of fluid, said sample volume being smaller than said predetermined volume;
*
dividing the sample volume by the amount of time it took to infuse said sample volume to determine the current infusion rate;
*
determining a rate error as a function of the current infusion rate and a desired rate which will result in the infusion of the predetermined volume of fluid at the end of the predetermined infusion time period;
*
determining the total volume of fluid infused between the start of the infusion and the end of the infusion of said sample volume;
*
determining a volumetric error as a function of the total volume of fluid infused and a desired volume which is the product of the predetermined volume of fluid and the rate of the time elapsed between the start of infusion and the end of the infusion of said sample volume to the predetermined infusion time period; and
*
adjusting the flow of fluid from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when either said rate error exceeds a predetermined rate tolerance or said volumetric error exceeds a predetermined volume tolerance.
36. The method of claim 35 further comprising the step of detecting the position of movable member, said movable member being used to push fluid out of said compartment and wherein the volume of infused fluid is determined as a function of the position of said movable member.
37. The method of claim 36 wherein the step of detecting position comprises emitting a ray of light at a strip of position indicating markings, receiving any light reflected from said position indicating markings and interpreting the received light to determine the position of said movable member. | | Claims Count: 37 | Claims (English):
I claim:
1. A multiple fluid cartridge assembly comprising:
*
a housing;
*
a plurality of flexible compartments for containing fluids, each compartment having an outlet through which said fluids are expelled;
*
a pressure roller movable within said housing to compress said plurality of flexible compartments, said pressure roller including engagement means extending from said housing;
*
a plurality of access tubes, each tube connected to the outlet of one of said compartment;
*
a multiple port connector, each port being connected to one of said access tubes; and
*
flow restrictor means for adjustably compressing said plurality of access tubes to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
2. The multiple fluid cartridge of claim 1 further comprising gear means extending from said housing and connected to said flow restrictor means for adjusting the pressure exerted by said flow restrictor means on said plurality of access tubes.
3. The multiple fluid cartridge of claim 1 further comprising a strip having position indicating markings along its length, said strip being arranged on said housing with its length in the direction of movement of said pressure roller.
4. The multiple cartridge of claim 1 further comprising a resilient base within said housing beneath said plurality of compartments and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
5. The multiple cartridge of claim 4 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
6. A fluid dispensing cartridge assembly comprising:
*
a housing;
*
at least one flexible compartment for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a pressure roller movable within said housing to compress said at least one flexible compartment, said pressure roller including means extending from said housing for engagement with a drive mechanism;
*
position indicating markings arranged along the length of said housing in the direction of movement of said pressure roller; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so the rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
7. The fluid dispensing cartridge of claim 6 wherein said position indicating markings are provided on a reflective strip on said housing.
8. The fluid dispensing cartridge of claim 6 further comprising gear means extending from said housing and connected to said flow restrictor means to control the adjustment of the pressure exerted by said flow restrictor means on said plurality of access tubes.
9. The fluid dispensing cartridge of claim 6 further comprising a resilient base within said housing beneath said at least one compartment and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
10. The fluid dispensing cartridge of claim 9 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
11. A fluid dispensing cartridge assembly comprising:
*
a housing having a resilient base;
*
at least one flexible compartment formed on said resilient base for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a roller for compressing said at least one compartment against said resilient base to squeeze fluid out through the outlets of said at least one compartment;
*
means for holding said roller against said base to prevent fluid from leaking within any of said at least one compartments between said roller and said base; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
12. The fluid dispensing cartridge of claim 11 wherein said means for holding said roller comprises a pair of slots in opposite sides of said housing.
13. The fluid dispensing cartridge of claim 11 further comprising gear means extending from said housing and connected to said flow restrictor means to control the adjustment of the pressure exerted by said flow restrictor means on said plurality of access tubes.
14. The fluid dispensing cartridge of claim 11 further comprising a strip having position indicating markings along its length, said strip being arranged on said housing with its length in the direction of movement of said pressure roller.
15. A programmable pump comprising:
*
a housing;
*
a sliding member within said housing;
*
means for applying a substantially constant force to said slidable member;
*
means for detecting the position of said slidable member within said housing;
*
a motor;
*
means, coupled to said motor, for regulating a flow restrictor; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that said slidable member moves through said housing to provide a preprogrammed volume of flow per the time duration of the infusion.
16. The programmable pump of claim 15 wherein said position detecting means comprises an optical emitter and detector carried by said slidable member.
17. The programmable pump of claim 16 wherein said position detecting means further comprises a strip having position indicating markings along its length, said strip being arranged in said housing with its length in the direction of movement of said slidable member and said optical emitter and detector interact with said strip to read the markings thereon as said slidable member moves relative thereto.
18. The programmable pump of claim 15 wherein said means for applying a substantially constant force comprises a constant force spring.
19. The programmable pump of claim 18 wherein said constant force spring comprises a coil prevented from translational movement within said housing having one end connected to said slidable member.
20. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
means for applying pressure coupled to the free end of said constant force spring such that said pressure applying means is pulled against said at least one compartment for pushing fluid therefrom; and
*
flow restrictor means for regulating the flow of fluid out of said at least one compartment;
*
a motor on said pump housing; and
*
gear means connected to said motor for adjusting said flow restrictor means.
21. The infusion pump of claim 20 wherein said pressure applying means comprises a slidable member connected to the free end of said constant force spring and a roller engaged by said slidable member so that said roller is pulled against said at least one compartment for squeezing fluid therefrom.
22. The infusion pump of claim 21 wherein said fluid containing compartment is a flexible compartment formed on a resilient base and said roller is held against said base to prevent fluid from leaking within said compartment between said roller and said resilient base.
23. The infusion pump of claim 20 further comprising:
*
a strip having position indicating markings along its length, said strip being arranged with its length in the direction of movement of said pressure applying means; and
*
an optical emitter and detector carried by said pressure applying means to read the position of said pressure applying means relative to said at least one compartment as said pressure applying means is pulled against said at least one compartment.
24. The infusion pump of claim 23 further comprising programmable controller means responsive to said emitter and detector for controlling said motor to set said flow restrictor means so that fluid is pushed from said at least one compartment at a predetermined rate.
25. The infusion pump of claim 21 wherein said at least one fluid containing compartment is located on a cartridge insertable into said pump housing.
26. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment located on a cartridge insertable into said pump housing;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said constant force spring; and
*
a roller engaged by said slidable member so that said roller is pulled against said at least one compartment for squeezing fluid therefrom, wherein said roller includes an engagement means extending through slots of said cartridge for engaging said slidable member such that when said cartridge is loaded into said pump housing said engagement means engages said slidable member to unwind said constant force spring.
27. A programmable infusion pump comprising:
*
a pump housing for receiving a cartridge housing, said cartridge housing containing at least one flexible fluid containing compartment each compartment having an access tube through which fluid can be expelled;
*
a substantially constant force spring having a free end on the exterior of a coil, said coil mounted within said pump housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said spring;
*
a roller carried in said cartridge housing and engaged by said slidable member for compressing said at least one compartment to squeeze fluid out through the access tubes of said at least one compartment;
*
flow restrictor means for restricting the flow of fluid out through the access tubes;
*
a motor coupled to said flow restrictor means for regulating said flow restrictor means;
*
means for detecting the position of said roller; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that as said roller is pulled through said cartridge housing by said slidable member, a preprogrammed volume of fluid flows out of said at least one flexible compartment per time duration of the infusion.
28. The programmable infusion pump of claim 27 further comprising a strip having position indicating markings along its length, said strip being arranged on said cartridge housing with its length in the direction of movement of said roller.
29. The programmable infusion pump of claim 28 wherein said position detecting means comprises an optical emitter and detector carried by said slidable member to read the position of said slidable member relative to said at least one compartment as said roller is pulled across said at least one compartment, the position of said slidable member being directly related to the position of said pressure roller.
30. The programmable infusion pump of claim 27 wherein said flow restrictor means includes:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hold engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
31. The programmable infusion pump of claim 27 further comprising a multiple port connector, each port being connected to one of said access tubes.
32. The programmable infusion pump of claim 27 wherein said cartridge housing further comprises a resilient base within said housing beneath said at least one compartment and means for holding said roller against said base to prevent fluid from leaking within any of said compartments between said roller and said base.
33. A method for maintaining a predetermined infusion rate comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a movable member for pushing fluid out of said compartment;
*
counting the amount of time for which said infusion apparatus is being used during the infusion;
*
determining the time it takes said movable member to move from a first position to a second position;
*
determining the volume of fluid infused between the first position and the second position;
*
dividing the volume of fluid infused between the first position and the second position by the amount of time it took to move from the first position to the second position to determine the current infusion rate;
*
comparing the current infusion rate with the predetermined infusion rate; and
*
adjusting the rate of fluid flow from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when said current infusion rate differs from said predetermined infusion rate by more than a predetermined tolerance.
34. The method of claim 33 further comprising locating the position of said movable member by emitting a ray of light at a strip of position indicating markings, receiving any light reflected from said position indicating markings and interpreting the received light to determine the position of said movable member.
35. A method of infusing a predetermined volume of fluid over a predetermined infusion time period comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a means for expelling fluid from said compartment;
*
counting the time as said infusion apparatus is used during an infusion;
*
determining the time it takes to infuse a sample volume of fluid, said sample volume being smaller than said predetermined volume;
*
dividing the sample volume by the amount of time it took to infuse said sample volume to determine the current infusion rate;
*
determining a rate error as a function of the current infusion rate and a desired rate which will result in the infusion of the predetermined volume of fluid at the end of the predetermined infusion time period;
*
determining the total volume of fluid infused between the start of the infusion and the end of the infusion of said sample volume;
*
determining a volumetric error as a function of the total volume of fluid infused and a desired volume which is the product of the predetermined volume of fluid and the rate of the time elapsed between the start of infusion and the end of the infusion of said sample volume to the predetermined infusion time period; and
*
adjusting the flow of fluid from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when either said rate error exceeds a predetermined rate tolerance or said volumetric error exceeds a predetermined volume tolerance.
36. The method of claim 35 further comprising the step of detecting the position of movable member, said movable member being used to push fluid out of said compartment and wherein the volume of infused fluid is determined as a function of the position of said movable member.
37. The method of claim 36 wherein the step of detecting position comprises emitting a ray of light at a strip of position indicating markings, receiving any light reflected from said position indicating markings and interpreting the received light to determine the position of said movable member. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multiple fluid cartridge assembly comprising:
*
a housing;
*
a plurality of flexible compartments for containing fluids, each compartment having an outlet through which said fluids are expelled;
*
a pressure roller movable within said housing to compress said plurality of flexible compartments, said pressure roller including engagement means extending from said housing;
*
a plurality of access tubes, each tube connected to the outlet of one of said compartment;
*
a multiple port connector, each port being connected to one of said access tubes; and
*
flow restrictor means for adjustably compressing said plurality of access tubes to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member. | Independent Claims:
1. A multiple fluid cartridge assembly comprising:
*
a housing;
*
a plurality of flexible compartments for containing fluids, each compartment having an outlet through which said fluids are expelled;
*
a pressure roller movable within said housing to compress said plurality of flexible compartments, said pressure roller including engagement means extending from said housing;
*
a plurality of access tubes, each tube connected to the outlet of one of said compartment;
*
a multiple port connector, each port being connected to one of said access tubes; and
*
flow restrictor means for adjustably compressing said plurality of access tubes to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against said access tubes;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
6. A fluid dispensing cartridge assembly comprising:
*
a housing;
*
at least one flexible compartment for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a pressure roller movable within said housing to compress said at least one flexible compartment, said pressure roller including means extending from said housing for engagement with a drive mechanism;
*
position indicating markings arranged along the length of said housing in the direction of movement of said pressure roller; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so the rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
11. A fluid dispensing cartridge assembly comprising:
*
a housing having a resilient base;
*
at least one flexible compartment formed on said resilient base for containing fluid, each compartment being connected by an access tube to an outlet for expelling fluid;
*
a roller for compressing said at least one compartment against said resilient base to squeeze fluid out through the outlets of said at least one compartment;
*
means for holding said roller against said base to prevent fluid from leaking within any of said at least one compartments between said roller and said base; and
*
flow restrictor means for adjustably compressing each said access tube to regulate the flow of fluid therethrough, said flow restrictor means including:
*
a compression member for contacting and pressing against each said access tube;
*
a spring located adjacent said compression member so that said spring may exert force against said compression member;
*
a rotatable threaded cylindrical member; and
*
a non-rotating member having a threaded hole engaged by said cylindrical member, said non-rotating member being adjacent said spring opposite said compression member so that rotation of said cylindrical member adjusts the force exerted by said non-rotating member on said spring and consequently adjusting the force exerted by said spring on said compression member.
15. A programmable pump comprising:
*
a housing;
*
a sliding member within said housing;
*
means for applying a substantially constant force to said slidable member;
*
means for detecting the position of said slidable member within said housing;
*
a motor;
*
means, coupled to said motor, for regulating a flow restrictor; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that said slidable member moves through said housing to provide a preprogrammed volume of flow per the time duration of the infusion.
20. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
means for applying pressure coupled to the free end of said constant force spring such that said pressure applying means is pulled against said at least one compartment for pushing fluid therefrom; and
*
flow restrictor means for regulating the flow of fluid out of said at least one compartment;
*
a motor on said pump housing; and
*
gear means connected to said motor for adjusting said flow restrictor means.
26. An infusion pump comprising:
*
a pump housing for receiving at least one fluid containing compartment located on a cartridge insertable into said pump housing;
*
a constant force spring having a free end at the exterior of a coil, said coil mounted within said housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said constant force spring; and
*
a roller engaged by said slidable member so that said roller is pulled against said at least one compartment for squeezing fluid therefrom, wherein said roller includes an engagement means extending through slots of said cartridge for engaging said slidable member such that when said cartridge is loaded into said pump housing said engagement means engages said slidable member to unwind said constant force spring.
27. A programmable infusion pump comprising:
*
a pump housing for receiving a cartridge housing, said cartridge housing containing at least one flexible fluid containing compartment each compartment having an access tube through which fluid can be expelled;
*
a substantially constant force spring having a free end on the exterior of a coil, said coil mounted within said pump housing so as to be prevented from translational movement;
*
a slidable member connected to the free end of said spring;
*
a roller carried in said cartridge housing and engaged by said slidable member for compressing said at least one compartment to squeeze fluid out through the access tubes of said at least one compartment;
*
flow restrictor means for restricting the flow of fluid out through the access tubes;
*
a motor coupled to said flow restrictor means for regulating said flow restrictor means;
*
means for detecting the position of said roller; and
*
programmable controller means responsive to said position detecting means for operating said motor to regulate the flow restrictor such that as said roller is pulled through said cartridge housing by said slidable member, a preprogrammed volume of fluid flows out of said at least one flexible compartment per time duration of the infusion.
33. A method for maintaining a predetermined infusion rate comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a movable member for pushing fluid out of said compartment;
*
counting the amount of time for which said infusion apparatus is being used during the infusion;
*
determining the time it takes said movable member to move from a first position to a second position;
*
determining the volume of fluid infused between the first position and the second position;
*
dividing the volume of fluid infused between the first position and the second position by the amount of time it took to move from the first position to the second position to determine the current infusion rate;
*
comparing the current infusion rate with the predetermined infusion rate; and
*
adjusting the rate of fluid flow from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when said current infusion rate differs from said predetermined infusion rate by more than a predetermined tolerance.
35. A method of infusing a predetermined volume of fluid over a predetermined infusion time period comprising the steps of:
*
providing infusion apparatus having a fluid containing compartment and a means for expelling fluid from said compartment;
*
counting the time as said infusion apparatus is used during an infusion;
*
determining the time it takes to infuse a sample volume of fluid, said sample volume being smaller than said predetermined volume;
*
dividing the sample volume by the amount of time it took to infuse said sample volume to determine the current infusion rate;
*
determining a rate error as a function of the current infusion rate and a desired rate which will result in the infusion of the predetermined volume of fluid at the end of the predetermined infusion time period;
*
determining the total volume of fluid infused between the start of the infusion and the end of the infusion of said sample volume;
*
determining a volumetric error as a function of the total volume of fluid infused and a desired volume which is the product of the predetermined volume of fluid and the rate of the time elapsed between the start of infusion and the end of the infusion of said sample volume to the predetermined infusion time period; and
*
adjusting the flow of fluid from said infusion apparatus by adjusting a flow restrictor means to vary the size of an outlet from said compartment when either said rate error exceeds a predetermined rate tolerance or said volumetric error exceeds a predetermined volume tolerance. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a method and apparatus for infusing fluids accurately in terms of dosages or infusion rates. In particular it relates to a programmable infusion pump that receives a multiple fluid cartridge.
Infusion pumps are used to administer a variety of drug therapies to patients. Examples of two such diverse applications are the administration of chemotherapy drugs to cancer patients and the administration of heart-rate control drugs to cardiac patients.
The patient receiving drugs which are used to control his heart rate needs to have the fluid delivered at an extremely constant rate because the rate of his heartbeat is proportional (or inversely proportional, as the case may be) to the amount of drug delivered. If the rate of infusion were to decrease or increase significantly, the heart would pump more slowly or more quickly than desired. It is important for the infusion pump administering these drugs to return as quickly as possible to the proper infusion rate.
The volume of a heart rate control drug which was overinfused or underinfused does not have to be corrected for. If, for example, a volumetric correction was made to infuse an additional bolus of drug because the pump had slowed down, the patient might find his heart beating overly fast for a period of time. This would be highly undesirable and might even be dangerous for the patient. This type of therapy is referred to herein as a rate-dependent therapy, and many other examples of such therapies exist.
Another type of therapy which requires an infusion pump is the administration of chemotherapy drugs to cancer patients. A recent trend in the administration of chemotherapy is to provide for a slow, continuous infusion in place of the tradition bolus injection of a cytotoxin. It has been found by many cancer researchers and oncologists that the severe side-effects of chemotherapy, such as nausea, vomiting, diarrhea, anorexia, and lassitude, may be reduced in a significant number of patients if the drugs are administered in lower dosages over a prolonged period of time.
As an example relating to infusion pumps, the dosage of certain cytotoxins which may be administered is determined by approximating the surface area of the skin of the patient. The number of milligrams of drug to be administered for each square meter of skin per day for a given therapy is then computed. This amount of drug may then be administered by the traditional bolus injection in a few seconds or by the more advantageous continuous infusion method over a period of hours or even days.
When the more advantageous continuous infusion method is used, it becomes apparent that the infusion device must endeavor to administer the required volume (i.e., number of prescribed milligrams) of drug for a period of days. This type of therapy is referred to herein as a dosage-dependent therapy or volume-dependent therapy.
For an infusion device to perform this dosage-dependent therapy accurately, it must maintain a fairly constant infusion rate and determine if any undesired fluctuations in rate occurred. There must be a correction for the amount of drug which was underinfused or overinfused during a period of fluctuation.
For example, if the device were infusing the cytotoxins to the cancer patient too slowly for a period of time, it must determine how many milligrams of drug were not infused and it must then correct for the deficiency by infusing an additional amount of drug for a period of time. After the correction has been made, the pump must endeavor to return to the desired rate so that the prescribed amount of the remaining drug is administered to the patient in the required time period.
The small volumetric errors caused by the mechanism of conventional infusion pumps, as illustrated in the cardiac patient example, are not advantageous in the drug therapy of a cancer patient because they can build up to substantial cumulative errors over a long period of time. This is especially true when the pump is being used in an ambulatory patient who is not subject to continuous surveilance.
It is an object of the method of the present invention to provide physicians with the means for properly administering dosage-dependent therapies.
In recent times it has become increasingly desirable to provide an infusion pump which is compact and lightweight so that it may be used by an ambulatory patient. Ambulatory infusion pumps reduce the need for excess use of hospital facilities and resources. In order to provide a lightweight pump it is highly desirable that a pump require a minimal amount of electric power since power sources, such as batteries, can contribute substantially to the weight of a pump.
It is another object of this invention to provide for a compact, lightweight infusion pump which may be used by ambulatory patients.
There are also an increasing number of applications for which there is a need for a pump which can intravenously administer a plurality of drugs solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Many of the drugs used in chemotherapy and other therapies cannot be mixed together prior to an infusion. Some of these drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient.
It is often found that when different incompatible drug solutions are used on a single patient, they are administered by using a separate catheter tube for each drug. A separate infusion pump would then be used on each individual catheter tube line and the tube would deliver the fluid solution into the patient through its respective intravascular access needle. Since a patient must pay for each catheter set and must rent a pump for use with each catheter tube, it becomes costly to use multiple catheter tubes and pumps. There is some danger of infection any time an opening is made in a patient's skin for a catheter. The likelihood of infection increases as more openings are made to accommodate multiple lines.
It is therefore yet another object of this invention to provide a single pump, with a single vascular-entry catheter set, that can deliver a multiplicity of drug solutions without mixing any of them prior to infusion. It is still yet another object of this invention to provide an ambulatory infusion pump which can administer several different drug solutions without mixing any of the fluids together.
SUMMARY OF THE INVENTION
The infusion pump of the present invention is achieved by using a unique multiple fluid cartridge assembly. The cartridge houses a plurality of flexible compartments and a pressure roller which rolls over the compartments to squeeze fluid out through their outlet opening. A plurality of access tubes connect to the openings in the flexible compartments and a multiple port connector is provided so that a single multilumen catheter can be easily connected to the cartridge for use in the infusion process. The cartridge is advantageously constructed with a resilient base to better insure that fluid does not leak behind the roller when it presses against the fluid compartments.
The cartridge may be advantageously provided with position markings along the length of the housing. These markings can be used to monitor the position of the pressure roller during the infusion process. The pump of the present invention includes an optical sensor which can read from the position markings to give a determination of where the pressure roller is. The pump is provided with a microprocessor type controller which can calculate the rate at which fluid is being delivered from the pump as a function of the time it has taken the roller to travel a measured distance. The pump of the present invention is advantageously powered by a constant force spring. Thus, the power is provided mechanically when the cartridge is inserted into the pump. There is no need for electrical power to push fluid out of the pump. A motor is provided however which controls a flow restriction valve. If the microprocessor determines that the pump is not operating at the predetermined rate, the position of the valve is changed to increase or decrease the rate of infusion. It requires very little power to occasionally operate the valve during an infusion process.
The cartridge pump of the present invention advantageously employs a novel method for maintaining highly accurate infusion rates. The optical emitter and sensor monitor the position of the pressure roller by reading the position markings. The location is fed into the programmable controller. The distance travelled from the beginning of the infusion is used in determining the total volume of the fluid which has been infused. The amount of fluid which is delivered per distance travelled by the roller is already known by the controller. The controller also determines the current rate of infusion by taking the volume of fluid infused in a predetermined distance and dividing it by the time it took the pressure roller to progress that distance. Thus the current rate and the total volume can be compared to the predetermined rate and volume. The comparison can be accomplished repetitively throughout the infusion process. By making a correction whenever the rate error or volume error exceeds a threshold value an accurate infusion rate can be maintained throughout the infusion process. This method is thus highly advantageous for use in dosage dependent and rate dependent therapies.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates a multilumen infusion system using the pump and cartridge of the present invention.
FIG. 2 is a perspective view with portions cut away of the cartridge of the present invention.
FIG. 3 is an exploded view of the base portion of the cartridge housing of FIG. 2.
FIG. 4A is a cross-sectional view of the flow restrictor valve of FIG. 2 in an open position.
FIG. 4B is a cross-sectional view of the flow restrictor valve of FIG. 2 in the fully closed position.
FIG. 5 is a magnified view of a portion of the position indicating strip of the present invention.
FIG. 6 is an illustration of a cartridge of FIG. 2 in the process of being filled with fluid.
FIG. 7 is a perspective view partially cut away of the pump of the present invention.
FIG. 8 is a side view in cross-section of the pump of FIG. 7.
FIG. 9 is an end view in cross-section of the pump of FIG. 7.
FIG. 10 provides an enlarged view of the optical sensing mechanism of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, the various pieces of a multilumen infusion system using the present invention are shown. The present invention includes a constant pressure infusion pump 10 which receives a multiple drug cartridge 20. The pump 10 of the preferred embodiment is powered by a constant force spring. A position indicating strip 22 is located on the multiple drug cartridge 20 for use by the pump 10 in monitoring the rate of infusion. The total volume of drug to be infused and the desired length of time for the infusion is programmed into the pump by a detachable programming unit 30.
The multiple drug cartridge 20 includes a multiple port connector 24. The multiple port connector 24 provides an outlet for each of the fluids being pumped from the cartridge 20. The multiple port connector 24 is adapted for connection to a connector 32 on a multilumen catheter 34. In the embodiment shown, the multiple port connector 24 and connector 32 snap-fit together. Of course, other multilumen connectors could be substituted for the snap-fit connectors. For example, at the other end of multilumen catheter 34 is a multilumen catheter connector with a threaded locking ring. Such a multilumen locking connector is disclosed in U.S. Pat. No. 4,581,012, issued Apr. 8, 1986, the disclosure of which is incorporated by reference herein. The multilumen locking connector is used to connect multilumen catheter 34 to an implantable multilumen catheter 40. The implantable multilumen catheter includes a tissue cuff 42 for forming a seal with the skin of a patient.
The multilumen infusion system of FIG. 1 provides for a simple and controlled infusion of a plurality of fluid solutions into a patient. Although the invention as described herein derives significant advantages from providing a plurality of fluid solutions through a multiple lumen catheter set, the infusion pump and cartridge of the present invention may also be made for use with a single fluid cartridge and conventional single lumen catheter.
Referring now to FIGS. 2 and 3, the multiple drug cartridge 20 of the present invention is shown in greater detail. The cartridge 20 is contained by a housing 21 which carries a plurality of flexible fluid containing compartments 36. Each compartment 36 has an outlet 37 connected to an access tube 38. A pressure roller 28 is provided inside the cartridge for rolling over the flexible compartments 36 in order to squeeze fluid out through the access tubes 38. The access tubes 38 extend into the multiple port connector 24. The pressure roller 28 includes a knob 29 on either side which extends from the cartridge for engaging a drive mechanism in the pump 10. The drive mechanism of the present invention is a sliding member pulled by a constant force spring. In accordance with the presently preferred embodiment, the knobs 29 extend from both ends of the pressure roller and ride within a pair of slots or tracks 31. It may also be possible to provide an open faced cartridge for use in a pump which already contains a pressure roller. However, the presently preferred arrangement is to include the roller 28 within the cartridge.
In order to control the rate of infusion of fluids from the cartridge 20, a flow restrictor valve 50 is provided for interaction with the access tubes 38. The valve 50 is controlled by an external gear 26 which is engageable with a mating gear inside the pump 10. Turning the gear 26 will change the pressure exerted upon the access tubes 38 by the valve 50. The more pressure which is applied by the valve 50 to the access tubes 38 the more restricted the flow of fluids therethrough. The valve 50 can be wound entirely down against the access tubes to completely close off fluid flow when desired.
The bottom of the cartridge housing 21 is a solid base member 44. Overlaying the solid base member 44 is a resilient layer 46. The resilient layer 46 is compressible by the pressure roller 28. Thus, as the pressure roller 28 is moved along the slots 31 through the cartridge a tight seal is formed between the roller 28 and the resilient layer 46 to prevent fluid from escaping behind the roller within a flexible compartment 36. All fluid is forced out through the access tubes 38. It is the resiliency of the layer 36 which causes it to push up against the roller 28 as the roller is held within the slots 31 down against the layer 46 thus forming the tight seal. The flexible compartments 36 are formed on the resilient layer 46 by a plastic molded layer 48. Layer 48 is molded in the shape of a plurality of compartments with an access tube 38 leading from each compartment. It would of course be possible to practice the invention using flexible bags to contain fluids instead of the multilayer construction described herein. In the presently preferred embodiment, both layer 46 and layer 48 are made of silicone, such as Dow Corning Silastic.
The relative infusion rate of the fluids in the compartments is determined by the geometry of the compartment. When the compartments are all the same size then the fluids in each are infused at the same rate. It is preferable that each compartment has the same length but varies in width or height to provide a different volume compartment. With all compartments the same length those with a larger width and/or height will have a larger volume. Thus when the roller moves a certain distance along the lengths of the compartments those with a larger width and/or height will have expelled a greater volume of fluid. Hence, the infusion rate is faster for the larger volume compartment. The infusion rate is proportional to the relative volume of the compartment.
In accordance with an alternative embodiment of the invention, the fluid containing compartments may be syringe barrels each with a piston for pushing fluid out of the syringe barrel. The pressure roller may be replaced by any slidable member attached to the constant force spring. The slidable member is pulled by the constant force spring against the syringe pistons to push fluid out of the syringe barrels.
The valve 50 of the present invention shall now be described in greater detail. The external gear 26 is directly connected to an internal gear 27. The internal gear 27 meshes with a second internal gear 52. Referring now to FIGS. 4A and 4B the second internal gear 52 is connected to a threaded cylindrical member 54. The threaded cylindrical member 54 engages a threaded hole within a non-rotating valve housing member 56. As shown in FIG. 2, the non-rotating member 56 is approximately square shaped and is prevented from rotating by the wall of the housing 21. The non-rotating member 56 acts to push against a coil spring 58. The spring 58 is held between the non-rotating housing member 56 and a lower housing member 59. At the bottom of the lower housing member 59 there is a compression member 60. As the threaded cylindrical member 54 is turned to force the non-rotatable housing member 56 against the coil spring 58 pressure is exerted downwards against the lower housing member 59 and the compression member 60. Thus the compression member 60 pushes against the access tubes 38 to restrict the flow of fluid therethrough. The compression member 60 can be pushed tight enough against the resilient member 46 so that the access tubes 38 are squeezed shut therebetween.
As shown in FIG. 4B, a positive mechanical seal can be achieved by further rotating the threaded cylindrical member 54, until there is direct contact between the non-rotating housing 56 and the lower housing member 59. This is desirable for situations that require a guaranteed seal, such as when the cartridge is prefilled at a pharmacy and transported to the physician. The threaded cylindrical member 54 may be turned in the opposite direction to relieve the pressure between the compression member 60 and the resilient base 46 so that fluid may flow through the access tubes 38. Thus, the rate of fluid flow through the access tubes 38 can be controlled by merely turning the external access gear 26 to give a variable degree of flow restriction to the fluids which are subjected to a constant force by the pressure roller 28 within the pump 10. It is also possible to use other types of flow restriction valves, such as needle valves.
The position indicating strip 22 is provided so that the location of the pressure roller 28 relative to the fluid compartments 36 can be detected through an appropriate sensing system. The position indicating strip 22 is oriented lengthwise in the direction of movement of the pressure roller 28. The strip 22 can be simply a plurality of equally spaced lines for which a simple sensing mechanism in the pump 10 can determine relative position by counting the number of lines crossed by the pressure roller 28. It is preferable, however, to provide the position indicating strip with coded information indicating the absolute position of the roller. The strip may appear something like that shown in FIG. 5. Access to absolute position from coded information has the advantage of allowing for determination of the position of the roller despite occasional, vibration-induced backward movement of the roller which could be interpreted by a line counter as an additional forward movement. In order to provide highly accurate infusion rate and volume information, the coded patterns on the position indicating strip 22 may be placed very close to one another, such as 10 microns apart. Depending upon the resolution desired, other greater distances between the coded patterns may suffice. The strip 22 is preferably reflective to make it easier to optically sense position. Knowing the position of the roller, the volume of fluid which has been infused into a patient can be readily determined.
The volume of the fluid which has been infused may be determined by multiplying the cross-sectional area of each flexible compartment 36 by the value assigned to each linear position of the roller. The flexible compartments 36 of the presently preferred embodiment have tapers near the starting and ending positions of the roller. These tapers, and the corresponding changes in cross-sectional area, are known functions of the shape of the mold that is used to manufacture the molded layer 48. This geometric information is stored in the microprocessor used to compute the infusion rate.
The operation of the cartridge shall be discussed with reference to FIG. 6. It is expected that cartridges would be generally supplied with their fluid containing compartments in an empty condition. A fill adapter 64 is used in the process of filling the compartments 36 with fluid. The fill adapter 64 has a connector which snaps onto the multiple port connector 24 and includes a plurality of single lumen tubing 66 through which fluid may be injected. The external gear 26 is turned to open the access tubes 38. For each fluid, a syringe is filled with enough drug and solution to fill each fluid containing compartment 36 to capacity. The syringes containing the fluids are attached to the open ends of the tubing 66. The syringes are squeezed to expel fluid through the fill adapter 64 and into the fluid containing compartments 36. After each of the compartments has been filled in this manner, the cartridge 20 is held vertically with the connector 24 on top. The roller 28 is gently shaken in order to displace any air bubbles in the fluid containing compartments. The syringe stems are withdrawn slightly to see if any air bubbles are present. If any air bubbles appear near the multiple port connector 24, which may advantageously be made of a clear plastic material such as polycarbonate, the respective syringe stem should be slowly withdrawn until the bubble is inside the syringe. The syringe is then held in an inverted position so that the fluid may be returned to the cartridge, but the air remains in the fill adapter. Each line is double checked for air bubbles and air bubbles are pulled out of the cartridge with the syringe stems wherever necessary. After it has been ascertained that there are no air bubbles remaining in the fluid compartments within the cartridge 20, the external valve gear 26 is turned to close off the access tubes 38 as shown in FIG. 4B. The use fill adapter 64 is removed and discarded. A fluid filled cartridge is now available for use in the pump.
Referring now to FIGS. 7, 8 and 9, the infusion pump 10 of the present invention is contained within a housing 11. The housing has an opening 71 through which the multiple fluid cartridge assembly is inserted. A locking device of any type may be used to hold the cartridge 20 inside the pump 10. A sliding peg 74 is shown in the drawings for use in locking the cartridge 20 within the pump 10. The peg 74 can slide back and forth within its mount 75, but the mount 75 maintains the peg captive so that it does not fall off of the device. On the inside, the pump 10 includes a sliding member 76 attached to a constant force spring 78. A constant force spring differs from a traditional tension or extension spring in that the output of the traditional spring increases (or decreases) linearly with position changes. The constant force spring provides a relatively stable output force regardless of position. Such springs are available from Stock Drive Products (New Hyde Park, N.Y.), model number SH08J28, as well as many other manufacturers. The constant force spring 78 is a metal coil. The metal coil constant force spring 78 is mounted on an idler spool 80. In accordance with the presently preferred embodiment there are two constant force springs, one on either side of the pump. The invention may just as well be made with one or any other number of constant force springs. The idler spools 80 are mounted to the pump housing 11. The spools 80 allow the coil spring 78 to rotate but prevent the springs from translational movement within the pump. The free end of the coil springs 78 are attached to the sliding member 76. The sliding member 76 has a channel 82 on its inner portion on either side of the incoming cartridge. The channels 82 do not go all the way through the sliding member 76. Rather, the channels 82 have a stop 83 which will butt against the knobs 29 of the pressure roller 28 on the cartridge 20. When a cartridge filled with fluid is inserted into the pump 10 the knob 29 on the pressure roller slide into the channel 82 of the sliding member until they hit the stops 83. Then further insertion of the cartridge pushes the sliding member to the rear of the pump unwinding the constant force spring 78. The sliding member 76 is pulled by the springs 78 against the pressure roller 28. The pressure roller pushes against the fluid filled compartments but is prevented from movement since the flow restrictor valve 50 is closed thereby preventing fluid from exiting from the compartments. The sliding member 76 includes a groove 84 on the outer side facing the wall of the pump housing. The grooves 84 are provided for riding within a track 86 on each side of the pump housing. The grooves 84 and track 86 maintain the sliding member in proper alignment on its movement through the pump. The pumping action begins when the flow restrictor valve 50 is opened from its closed position to allow fluid to flow out through the access tubes 38. Hence, the substantially constant force provided by the spring 78 pulls the sliding member 76 and consequently the pressure roller 28 against the fluid filled compartments to push fluid out of the pump.
It would be possible to have two sliding members, one on either side of the cartridge, however, a single sliding member connected by a bar over the top of the cartridge is preferred to provide a constant force across the fluid compartments and to provide a convenient location for the optical sensing system of the present invention.
In order to control the amount of pressure exerted by the flow restrictor valve 50 on the access tubes 38 the pump 10 is provided with a motor 88. The motor 88 is provided for turning a motor gear 90. The motor gear 90 engages the external cartridge gear 26 when the cartridge is fully inserted into the pump. An electrical button switch 92 can be provided on the outside of the pump to allow a user to turn the pump on or off. The pump has the indication "STOP" on the outside of the pump next to the button so that the patient knows that he can turn the pump off by depressing the button. When the pump is started by depressing button 92 the motor 88 will cause the gear 90 to turn. This causes gear 26 to likewise rotate thereby opening the valve 50 to allow fluid to begin flowing through the access tubes 38. In order to stop the pumping action, the motor will cause gear 90 to rotate in the opposite direction so as to cause valve 50 to close upon the access tubes. A battery 94 is provided for operating the motor 88. The battery 94 is also used for providing power to the microprocessor controller of the pump for operating the optical sensing system. Only a lightweight battery 94 is required because the motor is only needed from time to time after the proper flow rate has been established. A duty cycle for the motor of less than 2 seconds every 5 minutes is possible with the present invention. The electronics and optics also use only a small amount of electric power. It is highly advantageous that the power for pumping is provided by the mechanical spring 78. This advantageously avoids the need for the heavy power packs that are typically used with motor-driven pumps and avoids the fear that the power might run out during the infusion process.
A microprocessor based controller 96 is provided on a circuit broad. An electrical connector 98 is provided so that the detachable programming unit 30 can be used to set the infusion rate in the infusion pump 10. Other parameters of the infusion process may also be set by the programming unit 30. In addition, the programming rate may be a sequence of different rates which change from one to another over a long infusion process.
In accordance with the present invention, a unique control system is provided for regulating and maintaining an infusion rate delivered by an infusion pump to a patient. The control system includes the microprocessor controller 96 and the detachable programming unit 30. It will be understood that the detailed embodiment of the control unit 96 and the programming unit 30 itself form no part of the present invention, except to the extent that it provides one programmable control means available to those of ordinary skill in the art suitable for use in carrying out the steps of the present invention, the programming techniques for adapting a microprocessor controller to such steps being well known in the microprocessor and programmable control means art.
Before turning to the steps of the infusion dosage control method of the present invention, the optical sensing system shown in FIG. 10 shall be described. An optical emitter 100 and optical detector 102 are carried on the sliding member 76 of the pump 10. Power is supplied to these devices through a flexible cable 104 connected to the control unit 96. Ultimately, of course, the power is supplied by the battery 94. The flexible cable 104 is also used to transmit information back and forth between the optical sensing system made up of the emitter 100 and detector 102 and the control unit 96. The emitter 100 may consist of a common LED or laser diode. A lens 101 may be provided to focus the light emitted by the emitter 100. The light illuminates a spot on the position indicating strip 22. Light reflected from the strip 22 is detected by a sensor which is used as the detector 102. For a simple strip 22 which contains a plurality of equally-spaced stripes, the detector 102 may be a phototransistor which is masked with a striped pattern similar to that on the position strip 22. The photo masking of the detector causes the detected spot to turn on and off as the sliding member 76 carries the emitter 100 and detector 102 across the strip 22. Commonly available NPN-Si Phototransistors such as the NTE3037 distributed by NTE Electronics, Inc. (Bloomfield, N.J. ) may serve as such sensors. Equivalently, the emitter 100 could be masked with the striped pattern so that almost any light detector could easily identify moving the distance between two stripes. Alternative emitters and detectors may be readily selected by those of ordinary skill in the art.
A more accurate strip 22 would have a pattern encoded onto the surface, as shown in FIG. 5, to allow the actual position of the roller to be determined. This encoded strip 22 would require an array sensor to serve as the detector 102. Such array sensors are manufactured by Micron Technology, Inc. (Boise, Idaho), Models IS32 OpticRam and IS6410 OpticRam. Other array sensors are also commercially available. These array sensors require the lens 101 which focuses the pattern on strip 22 onto the active detection area.
The information received by the detector 102 whether it be a coded pattern or a simple series of on-off pulses is transmitted over the cable 104 to the control unit 96 where it is interpreted by the microprocessor unit. The interpretation may be a simple matter of counting the number of lines which are passed by the sliding member 76 as it is moved or it may be a more complicated algorithm which reads the patterns inscribed on the position indicating strip 22 to determine the absolute position of the sliding member 76 and thus the location of the pressure roller 28.
As with any measurement instrument, it is necessary to calibrate the sensing mechanisms so that it can determine the amount of volume which is displaced by the pressure roller 28 as the sliding member 76 moves a certain distance. This calibration is achieved in the present embodiment of the invention, by storing position and volume profiles in the microprocessor. For any given cartridge, the relationship between the position of the sliding member 76 and the volume expelled from the compartment 36 is measured and stored in the programming unit 30. The position and volume profile for the cartridge type being used in the pump 10 is transferred into the control unit 96 of the pump 10 when a physician initializes the pump for determining its treatment regimen. The physician indicates the type of cartridge and the programming unit 30 transfers the appropriate profile to the control unit 96.
The method of the present invention for maintaining a controlled flow rate shall now be described. The unit dosage for the therapy is determined by the physician. The physician then calculates the number of milliliters, cubic centimeters or milligrams of drug or drugs which are to be administered over a given infusion time period. The volume of fluid is then determined which corresponds to the required dosage for each drug. A diluting solution may be used in the preparation of this volume, if desired by the physician. The volume of fluid is accurately measured in a measuring device, such as a syringe or graduated cylinder. Separate measuring devices are more advantageously used in the case of multiple drugs to prevent mixing. The fluids are loaded into the storage compartments of the cartridge in accordance with common safety procedures, such as air bubble removal discussed above. Then the detachable programming unit 30 is attached to the electrical connector on the pump. The programming unit will then issue prompts so that the doctor may input the identity of the cartridge and the desired regimen which the pump is to follow with respect to duration and infusion volume. Thus, the pump is informed of the volume of fluids contained in the compartments and the length of the time period over which the infusion is to take place. The pump is attached to the patient and started. The detachable programming unit 30 is then disconnected.
The programmable controller 96 in the pump receives position information from the position indicating strip 22 through the optical sensing system and the position data is interpreted. When the pressure roller reaches the end of the cartridge, the pump is stopped and the end of the cycle is indicated througn a visual or audible signal. The end of this infusion cycle may also be indicated by expiration of the infusion time period. The doctor can set a certain amount of time for the infusion to take place and at the end of that time the infusion process will be stopped and the flow restrictor valve will be closed.
The controller determines whether any change in position has occurred. If the pressure roller stops moving then the controller checks to see whether there is an occlusion. A test is performed to determine the presence of an occlusion by opening the valve slightly. If the roller still does not move, an occlusion is assumed. If it is determined that there has been an occlusion, the flow restrictor valve is closed to stop the pump and an alarm is set off visually or audibly. If no occlusion is determined to exist, then the controller returns to its program to adjust the valve for obtaining the appropriate flow rate. Other types of occlusion tests may be performed, such as measuring the pressure changes which occur in the fluid lines during the occlusion formation, but the presently preferred test is based upon an interpretation of pressure roller motion.
The controller determines the current flow rate at which the pump is operating by counting the time which has elapsed as the pressure roller moves a predetermined distance. The programmable controller has a built in time clock as is typical in the art for microprocessors. The programmable controller is provided with a program that allows it to correlate the linear position of the pressure roller to the volume of fluid which has been expelled through or from the infusion pump. As long as the microprocessor is informed of the proper position and volume profile for the particular construction of the cartridges and molded layers which will be used in the pump, the pump will function properly. When the detachable programming unit was attached to the infusion pump for setting the parameters of the infusion, the type of cartridge which was being inserted into the infusion pump was indicated to the pump. In this manner, the programmable controller of the pump will know which set of data to refer to in determining the correlation between the linear position of the pressure roller and the volume of fluid expelled from the flexible fluid filled compartments.
In accordance with the present invention, the calculated current flow rate is compared with the desired flow rate as was indicated to the control unit by the detachable programming unit 30. The error in the flow rate is determined and compared with a predeterminedd allowable error. If the allowable error has been exceeded, the controller will instruct the flow regulator to make a correction. The type of correction depends on whether a rate-dependent therapy or a dosage dependent therapy is being followed. For a rate dependent therapy, the flow restrictor valve is adjusted a small amount. The valve will continue to be adjusted until the rate error has been reduced to an acceptable level. For a dosage dependent therapy, the flow restrictor valve is adjusted opened or closed until any volume error has been substantially eliminated. The valve is then readjusted to more closely approximate the desired rate of infusion.
Further in accordance with the invention, for dosage dependent therapies in addition to checking the current flow rate for error, the controller compares the total volume which has been infused with the volume which should have been infused according to the programmed infusion regimen. If the volumetric error exceeds a predetermined limit, the flow restrictor valve is instructed to open or close until the volume error has been substantially eliminated. In the presently preferred embodiment, the maximum allowable volumetric error is 1.0 cubic centimeter of drug for the cartridge. If for example the cartridge has four 20 cc. chambers, the volumetric accuracy for each individual chamber is 0.25 cc. This corresponds to an accuracy of 1.25% for the total infusion process, regardless of the duration of the infusion. When a volumetric error has been corrected, the valve is readjusted so as to approximate the desired rate of infusion. When the infusion process progresses at the desired rate and is within the volumetric tolerances, the controller continually loops through its program checking the position being sensed, the change in position, the change in time and determining whether a rate or volumetric error exists. Most of the time no adjustment will be necessary and therefore very little electrical power is consumed. The process continues until the end of the infusion at which time the flow restrictor valve is closed.
Sample computer programs for implementing the control method of the present invention on an Apple II computer (manufactured by Apple Computer Co., Inc.) equipped with A6 T/D Timer Driver Board and A32 I/O Optically Isolated I/O Board (manufactured by Rogers Labs, Inc., Santa Ana, CA) are attached as Appendix A. A similar program may be written by one of ordinary skill in the art to operate the microprocessor selected for the controller of the device of the present invention.
In the presently preferred embodiment, an electronic control system with optical sensing capability monitors the infusion process volumetrically and any deviation from the desired rate is derived from the changes in volume that are sensed by the system. It is possible for one of ordinary skill in the art to devise other feedback sensors to accomplish the same volumetric measurement, such as by attaching strain gauges to a syringe barrel and measuring the position of the plunger.
In the presently preferred embodiment, a cartridge with a roller and one or more elastomeric chambers which can independently store a multiplicity of fluid solutions is used to hold the fluids as the roller position is being measured. Other chambers could be devised by one of ordinary skill which could be used to accomplish the same type of measurement, such as by mounting one or several syringes in a manifold and using the position of the plungers to measure the volume.
In the presently preferred embodiment, an electronic controller is used to determine if any substantial errors exist in the rate or volume of fluid delivered. Other controllers, such as a mechanical controller comprised of gears and cams, may be adapted to measure fluid delivery errors and correct for them.
Of course, it should be understood that various changes and modifications to the preferred embodiment detailed herein and to the method of administering a dosage-dependent therapy as described herein will be apparent to those skilled in the art. These changes described above and other changes can be made without departing from the spirit and scope of this invention and method, and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Rosenbaum, C. Fred / Kartchner, Gene B. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1988-05-03 | | Publication Month: 05 | | Publication Year: 1988 | | Application Number: US1986940044A | | Application Country: US | | Application Date: 1986-12-10 | | Application Month: 12 | | Application Year: 1986 | | Application with US Provisional: US1986940044A | 1986-12-10 | | Priority Number: US1986940044A | | Priority Country: US | | Priority Date: 1986-12-10 | | Priority Date - Earliest: 1986-12-10 | | Priority Month: 12 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005148, A61M0005172, A61M000514 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005148
| A
| A61
| A61M
| A61M0005
| A61M0005148
|
A61M0005172
| A
| A61
| A61M
| A61M0005
| A61M0005172
|
A61M000514
| A
| A61
| A61M
| A61M0005
| A61M000514
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| A61M 5/142
A61M 5/148
A61M 5/172
| A61M 5/1408
A61M 2209/045
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604134, 604067, 604131, D24111 | | US Class (divided): 604/134, 604/067, 604/131, D24/111 | | US Class - Main: 604134 | | US Class - Original: 604134 | 604067 | 604131 | D24111 | | ECLA: A61M0005142, A61M0005148, A61M0005172, K61M000514B1, K61M020904F | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
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| 1977-08-30
| Szabo Anthony W.
| SZABO ANTHONY W
| -
| 0 (Examiner)
|
| Title: Fluid infusion apparatus |
| |
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| 1982-07-20
| Spivey David L.
| SPIVEY DAVID L
| -
| 0 (Examiner)
|
| Title: Method and apparatus for medication dispensing |
| |
US4111198A
| 1978-09-05
| Marx Alvin J.
| MARX ALVIN J
| -
| 0 (Examiner)
|
| Title: Automated intravenous fluid regulating and administering apparatus |
| |
US4525164A
| 1985-06-25
| Loeb Marvin P.
| BIOTEK INC
| -
| 0 (Examiner)
|
| Title: Wearable medication infusion system with arcuated reservoir |
| |
US4410322A
| 1983-10-18
| Archibald G. Kent
| AVI INC
| -
| 0 (Examiner)
|
| Title: Nonpulsating TV pump and disposable pump chamber |
| |
US4207871A
| 1980-06-17
| Jenkins Jon A.
| IMED CORP
| -
| 0 (Examiner)
|
| Title: System for controlling the flow of intravenous fluids to a patient |
| |
US3670926A
| 1972-06-20
| Hill Charles C.
| POWER TECHNOLOGY CORP
| -
| 0 (Examiner)
|
| Title: INTRAVENOUS FEEDING APPARATUS |
| |
US4417889A
| 1983-11-29
| Choi Soo Bong
| CHOI SOO BONG
| -
| 0 (Examiner)
|
| Title: Device for a portable automatic syringe |
| |
US4313439A
| 1982-02-02
| Babb Albert L.
| BIOTEK INC
| -
| 0 (Examiner)
|
| Title: Automated, spring-powered medicament infusion system |
| |
US3895631A
| 1975-07-22
| Buckles Richard G.
| ALZA CORP
| -
| 0 (Examiner)
|
| Title: Liquid infusion unit |
| |
US3029983A
| 1962-04-17
| WAGENHALS RUPERT S
| WAGENHALS RUPERT S
| -
| 0 (Examiner)
|
| Title: Dispenser for simultaneously discharging material from a plurality of collapsible tubes |
| |
US4563175A
| 1986-01-07
| LaFond Margaret
| LAFOND MARGARET
| -
| 0 (Examiner)
|
| Title: Multiplesyringe pump |
| |
US3647117A
| 1972-03-07
| Hargest Thomas S.
| THOMAS S HARGEST
| -
| 0 (Examiner)
|
| Title: APPARATUS FOR INTRAVENOUS FEEDING AND THE LIKE |
| |
US3151616A
| 1964-10-06
| SELFON PAUL M
| SELFON PAUL M
| -
| 0 (Examiner)
|
| Title: Automatic transfusion apparatus |
| |
DE2855713A1
| 1980-06-26
| Doehn Manfred Priv.-Doz. Dr.med. 2000 Hamburg
| DOEHN MANFRED PRIV DOZ DR MED
| -
| 0 (Examiner)
|
| Title: Vorrichtung zur Infusion von Loesungen aus mehreren Infusionsflaschen |
| |
US4507112A
| 1985-03-26
| Hillel Arie
| IPCO CORP
| -
| 0 (Examiner)
|
| Title: Infusion monitor |
| |
US4498843A
| 1985-02-12
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| | Count of Citing Patents: 156 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
2000-05-03
| SULP
| +
|
| Description: SURCHARGE FOR LATE PAYMENT |
| |
2000-05-03
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1999-11-23
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1995-11-03
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1991-10-10
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1986-12-10
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP OF CA, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:004642/0429 1986-12-09 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION A CORP OF CA,TORRANCE,CA,US
| BROWN, ERIC W.
| 1986-12-09
| 004642/0429
| 1986-12-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER STREET BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4741736A
| 19880503
| Brown Eric W.
| I FLOW CORP
|
| Title: Programmable infusion pump |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4741736A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4741736A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 7/43 | | US4701159A | Multilumen catheter set | | Publication Number: US4701159A | | Title: Multilumen catheter set | | Title (Original): Multilumen catheter set | | Title (English): Multilumen catheter set | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Multi-lumen connector with tissue cuff at one end of multi-lumen catheter with locking connector at other end | Abstract:
A subcutaneous catheter set is disclosed in which a multilumen catheter tube has a tissue cuff connected about its outer circumference. A lock adapter has a plurality of conduits in communication with the lumens of the multilumen catheter tube. A complementary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the subcutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | Abstract (English):
A subcutaneous catheter set is disclosed in which a multilumen catheter tube has a tissue cuff connected about its outer circumference. A lock adapter has a plurality of conduits in communication with the lumens of the multilumen catheter tube. A complementary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the subcutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A subcutaneous catheter set is disclosed in which a multilumen catheter tube has a tissue cuff connected about its outer circumference. A lock adapter has a plurality of conduits in communication with the lumens of the multilumen catheter tube. A complementary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the subcutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | | Abstract (Spanish): | Claims:
We claim:
1. A multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a multilumen catheter;
*
a second lock adapter having a plurality of conduits in communication with the lumens of said multilumen catheter;
*
means for locking said first lock adapter to said second lock adapter, said locking means being operable to put the conduits of said second lock adapter in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one independent single lumen access line each having one end connecting to one of said ports.
2. The multilumen catheter set of claim 1 further comprising a sheath surrounding all of said at least one independent single lumen access lines adjacent the rear face of said first lock adapter.
3. The multilumen catheter set of claim 1 further comprising a luer fitting connected to a second end of each of said at least one independent single lumen access lines.
4. The multilumen catheter set of claim 1 wherein said locking means comprise shoulder means extending from first lock adapter and an internally threaded lock ring having a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
5. The multilumen catheter set of claim 1 further comprising protrusions extending from the front face of said first lock adapter, each protrusion having one of said conduits therethrough.
6. An injection adapter for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one rigid injection tube each having one end connected to one of said ports and an other end covered with a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
7. The injection adapter of claim 6 further comprising a single lumen access line connected to one of the ports on said first lock adapter.
8. The injection adapter of claim 6 further comprising shoulder means extending from said first lock adapter and wherein said lock ring is internally threaded and has a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
9. The injection adapter of claim 6 further comprising protrusions extending from the front face of said first lock adapter, each protrusion having one of said conduits therethrough.
10. A sealing cap for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of protrusions in a front face, at least one of said protrusions being solid; and
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits in communication with the lumens of a multilumen catheter, said first lock adapter engaging said second lock adapter so that when locked each of said at least one solid protrusions matingly engages one of said conduits to close off said one of said conduits.
11. The sealing cap of claim 10 further comprising shoulder means extending from said first lock adapter and wherein said lock ring is internally threaded and has a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
12. The sealing cap of claim 10 wherein said at least one solid protrusion comprises a plurality of protrusions such that upon locking said first lock adapter to said second lock adapter, each of said conduits is closed off by one of said protrusions.
13. The sealing cap of claim 10 wherein one of said protrusions has a conduit therethrough and further comprising
*
a rigid injection tube having one end connected to the conduit and an other end covered by a plug penstrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
14. The sealing cap of claim 10 wherein one of said protrusions has a conduit therethrough and further comprising
*
a single lumen access line connected to the conduit.
15. A subsutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a sealing cap having a plurality of solid protrusions interengageable with said plurality of conduits of said lock adapter; and
*
means for locking said lock adapter to said sealing cap so that said protrusions sealingly close each of said conduits of said lock adapter.
16. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one rigid injection tube, each having one end connected to the conduit in one of said at least one of said protrusions and an other end covered by a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn, said plug reseals said other end of said at least one injection tube; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter.
17. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one single lumen access line, each connected to said conduit in one of said at least one of said protrusions; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter. | | Claims Count: 17 | Claims (English):
We claim:
1. A multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a multilumen catheter;
*
a second lock adapter having a plurality of conduits in communication with the lumens of said multilumen catheter;
*
means for locking said first lock adapter to said second lock adapter, said locking means being operable to put the conduits of said second lock adapter in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one independent single lumen access line each having one end connecting to one of said ports.
2. The multilumen catheter set of claim 1 further comprising a sheath surrounding all of said at least one independent single lumen access lines adjacent the rear face of said first lock adapter.
3. The multilumen catheter set of claim 1 further comprising a luer fitting connected to a second end of each of said at least one independent single lumen access lines.
4. The multilumen catheter set of claim 1 wherein said locking means comprise shoulder means extending from first lock adapter and an internally threaded lock ring having a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
5. The multilumen catheter set of claim 1 further comprising protrusions extending from the front face of said first lock adapter, each protrusion having one of said conduits therethrough.
6. An injection adapter for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one rigid injection tube each having one end connected to one of said ports and an other end covered with a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
7. The injection adapter of claim 6 further comprising a single lumen access line connected to one of the ports on said first lock adapter.
8. The injection adapter of claim 6 further comprising shoulder means extending from said first lock adapter and wherein said lock ring is internally threaded and has a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
9. The injection adapter of claim 6 further comprising protrusions extending from the front face of said first lock adapter, each protrusion having one of said conduits therethrough.
10. A sealing cap for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of protrusions in a front face, at least one of said protrusions being solid; and
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits in communication with the lumens of a multilumen catheter, said first lock adapter engaging said second lock adapter so that when locked each of said at least one solid protrusions matingly engages one of said conduits to close off said one of said conduits.
11. The sealing cap of claim 10 further comprising shoulder means extending from said first lock adapter and wherein said lock ring is internally threaded and has a base abutting said shoulder means so that when said ring is screwed onto the second lock adapter, said first lock adapter is brought into sealing contact with said second lock adapter.
12. The sealing cap of claim 10 wherein said at least one solid protrusion comprises a plurality of protrusions such that upon locking said first lock adapter to said second lock adapter, each of said conduits is closed off by one of said protrusions.
13. The sealing cap of claim 10 wherein one of said protrusions has a conduit therethrough and further comprising
*
a rigid injection tube having one end connected to the conduit and an other end covered by a plug penstrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
14. The sealing cap of claim 10 wherein one of said protrusions has a conduit therethrough and further comprising
*
a single lumen access line connected to the conduit.
15. A subsutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a sealing cap having a plurality of solid protrusions interengageable with said plurality of conduits of said lock adapter; and
*
means for locking said lock adapter to said sealing cap so that said protrusions sealingly close each of said conduits of said lock adapter.
16. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one rigid injection tube, each having one end connected to the conduit in one of said at least one of said protrusions and an other end covered by a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn, said plug reseals said other end of said at least one injection tube; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter.
17. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one single lumen access line, each connected to said conduit in one of said at least one of said protrusions; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a multilumen catheter;
*
a second lock adapter having a plurality of conduits in communication with the lumens of said multilumen catheter;
*
means for locking said first lock adapter to said second lock adapter, said locking means being operable to put the conduits of said second lock adapter in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one independent single lumen access line each having one end connecting to one of said ports. | Independent Claims:
1. A multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a multilumen catheter;
*
a second lock adapter having a plurality of conduits in communication with the lumens of said multilumen catheter;
*
means for locking said first lock adapter to said second lock adapter, said locking means being operable to put the conduits of said second lock adapter in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one independent single lumen access line each having one end connecting to one of said ports.
6. An injection adapter for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter;
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and
*
at least one rigid injection tube each having one end connected to one of said ports and an other end covered with a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
10. A sealing cap for a multilumen catheter set comprising:
*
a first lock adapter including a plurality of protrusions in a front face, at least one of said protrusions being solid; and
*
a lock ring for achieving locking engagement between said first lock adapter and a second lock adapter having a plurality of conduits in communication with the lumens of a multilumen catheter, said first lock adapter engaging said second lock adapter so that when locked each of said at least one solid protrusions matingly engages one of said conduits to close off said one of said conduits.
15. A subsutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a sealing cap having a plurality of solid protrusions interengageable with said plurality of conduits of said lock adapter; and
*
means for locking said lock adapter to said sealing cap so that said protrusions sealingly close each of said conduits of said lock adapter.
16. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one rigid injection tube, each having one end connected to the conduit in one of said at least one of said protrusions and an other end covered by a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn, said plug reseals said other end of said at least one injection tube; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter.
17. A subcutaneous catheter set comprising:
*
a multilumen catheter tube having one end with an exit port for each lumen and an other end;
*
a tissue cuff connected around an outer circumference of said catheter tube;
*
a first lock adapter including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to one of said ports;
*
a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter, at least one of said protrusions having a conduit therethrough;
*
at least one single lumen access line, each connected to said conduit in one of said at least one of said protrusions; and
*
means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a multilumen catneter set, in particular, one for a subcutaneous route for intravenous infusions.
It has been found convenient for patients who are receiving frequent infusions to provide them with a tunneled subcutaneous catheter. Such a catheter is inserted underneath the skin of the patient and then into a vein. A tissue cuff is provided on the catheter near the skin so that the skin may grow into it and hold the catheter in place. An adapter is located on the end of the catheter, above the skin. Into which a mating connector may be attached to connect the subcutaneously tunneled catheter with an external catheter. The external catheter may be used for infusion of fluids or for extraction of body fluid for testing.
Since there are times when more than one infusion or operation using the catheter set may be desirable, dual lumen subcutaneously tunneled catheters have been developed. The two lumens are fused together underneath the skin of the patient. Above the skin the lumens are separated and each is provided with an adapter for separate connection to an outside source. This arrangement can be cumbersome for a patient since there are two tubes and adapters hanging from the implanted catheter and would be even more cumbersome if the implanted catheter has more than two lumens. Furthermore, if one of the single lumen extensions projecting from the implanted multilumen catheter should break off, the entire catheter set may need to be surgically replaced.
Experimentation and advances in medicine are creating new needs for infusing a multiplicity of fluids into a patient. There are many applications for which there is a need for a device which can intravenously administer a plurality of drug solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often, if different drug solutions are used, they are administered by using a separate catheter tube for each drug. This may require a separate pump for each catheter tube line which would increase costs.
There is thus a need for new catheter equipment which offers greater patient comfort and provides doctors with greater convenience in experimenting and using new treatments that involve a plurality of drug solutions.
SUMMARY OF THE INVENTION
The present invention is directed to a subcutaneously tunneled catheter set which includes a multilumen catheter for insertion under the skin of a patient. The catheter includes a tissue cuff about its outer circumference. At the outermost end of the catheter, a lock adapter of the present invention is attached. The adapter includes a plurality of ports for connection with each of the lumens in the catheter. A conduit is located in the adapter between each port and a mating face. A complementary lock adapter is attached to an external multilumen catheter, a plurality of single lumen access lines, or a plurality of injection tubes. The complementary lock adapter may instead have solid protrusions for closing off conduits of said first adapter or may have a combination of single lumen catneters, injection tubes and solid protrusions. A device is provided for locking the two adapters together. They are locked in such a way that the conduits provide communication between the lumens of the subcutaneously tunneled catheter and the lumens of the external multilumen catheter, the single lumen access lines, the injection tubes, or the solid protrusions depending upon which are carried by the complementary lock adapter.
The subcutaneously tunneled catheter may be connected by a multilumen connector to a second reinforced multilumen catheter. The multilumen connector may advantageously be tube. The multilumen connector may advantageously be provided with a tissue cuff about its circumference so that one will not be required about the catheter.
The multilumen catheter set of the present invention advantageously provides the ability for long term regimens of drug treatment involving a plurality of drug solutions. The wire reinforced catheter may be used to advantageously avoid blockage of the catheter because of bending of the catheter tube. The multilumen locking connector advantageously allows the use of a variety of different external input devices with the subcutaneously tunneled catheter set.
A single pump which may be used in conjunction with the catheter set of the present invention is described in pending patent application U.S. Ser. No. 677,849, filed Dec 5, 1984 entitled "Infusion Pump", sharing the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an illustration of the catheter set of the present invention being used in a patient.
FIG. 2 is a plan view of a first embodiment of the catheter set of the present invention in partial cross-section.
FIG. 3 is a cross-sectional view of the multilumen connector of the present invention.
FIG. 3A is an end view of the multilumen connector of FIG. 3 taken along lines A--A.
FIG. 3B is an end view of the multilumen connector of FIG. 3 taken along lines B--B.
FIG. 4 is a cross-sectional view of the multilumen locking connector of the present invention.
FIG. 4A is an end view of the multilumen locking connector of FIG. 4 taken through lines A--A.
FIG. 4B is an end view of the multilumen locking connector of FIG. 4 taken through lines B--B.
FIG. 5 is a plan view of a second embodiment of the present invention.
FIG. 6 is a plan view of a multibranch adapter of the present invention.
FIG. 7A is a plan view of the lock adapter of the present invention fitted with injection tubes.
FIG. 7B is a bottom view of the lock adapter of FIG. 7A.
FIG. 8 is a plan view of the sealing cap of the present invention.
FIG. 9 is a perspective view of a multipurpose adapter of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, the multilumen subcutaneously tunneled cather set 100 of the present invention is inserted and used in a patient in a manner similar to that of the well known Hickman catheter sets. According to the present invention. A subcutaneously tunneled multilumen catheter tube 10 is surgically inserted under the skin and into a vein of the patient. The lumens are provided with an exit port 12 at the end of the multilumen catheter tube 10. Near the other end of the subcutaneously tunneled multilumen catheter tube there is a tissue cuff 20 into which fibrous tissue of the patient grows to anchor the catheter set and to reduce the likelihood of infection.
A reinforced catheter tube 30 extends from the tissue cuff 20 out of the patient and ends with a multilumen locking connector adapter 40. Since the catheter tubes are very small in diameter, bending a multilumen catheter tube may have a tendency to close off one of the lumens with a kink in the outer layer of tubing. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilumen catheter 30. In accordance with the preferred reinforcement as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments. The multilumen locking connector adapter 40 is covered with a sealing cap such as that shown in FIG. 8 when the catheter set is not in use. In a multilumen catheter, since the walls of each lumen are often much smaller than the walls of a single catheter tube, the likelihood of a blockage due to kinking when the tube is bent is greater. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilmen catheter 30. In accordance with the preferred embodiment as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments.
Referring now to FIGS. 3, 3A and 3B, the multilumen connector of the present invention is shown. This connector 50 has a plurality of ports 52 at one end onto which the lumens of the suocutaneously tunneled multilumen catheter tube 10 are bonded in a conventional manner. At the opposite end of the connector 50, a corresponding plurality of ports 54 are provided for bonding with the lumens of the reinforced catheter 30. The shaoes of the lumens illustrated in FIGS. 3A and 3B differ. Nevertheless, the lumens in the multilumen catheters of the present invention may be any useable shape and they may be the same at both ends of the connector 50. It is desirable, however, that the lumens be shaped in the subsutaneously tunneled multilumen catheter tube so that the maximum amount of fluid flow is allowed in a minimum amount of space. The ports 52 and 54 at opposite ends of the connectors are in communication with one another via conduits 56. Thus, when the connector is hooked up on either end to multilumen catheter tube, the lumens of the two tubes are in communication with one another. According to the present invention, the preferred placement for the tissue cuff 20 is around the outer circumference of the multilumen connector 50 as shown in FIG. 3. The cuff 20 may be glued, thermally melted or bonded to the connector 50 by any other conventional bonding method.
FIGS. 4, 4A and 4B illustrate the multilumen locking connector for connecting the catheter set of the present invention with an external multilumen catheter tube 80. The external multilumen catheter tube 80 is preferably reinforced to avoid kinking. According to the preferred embodiment the multilumen locking connector 60 is made with a female lock adapter 40, a male lock adapter 62 and a locking ring 64. The female lock adapter 40 includes a plurality of ports 43 onto which the lumens of the reinforced catheter tube 30 are bonded. On the opposite side of the female lock adapter 40 is a mating face 45 which includes a plurality of incentations 46. A conduit 41 passes from each port 43 to the mating face 45. The indentations 46 are located at each conduit 42. A ring 48 including two tabs 49 is shown surrounding the outer circumference of the female adapter 40. The tabs 49 are used for engaging the locking ring 64.
The male multilumen lock adapter 62 is likewise provided with a plurality of ports 65 for fitting within and bonding to its respective multilumen catheter tube. Conduits 66 connect each port 65 to the mating face 67 at the other end of the male adapter 62. The mating face 67 of the male lock connector includes a protrusion 68 at each conduit 66. The protrusions 68 match the indentations 46 of the female lock connector 40 so that the two mating faces 67 and 45 may be interengaged.
The lumens in a multilumen catheter are symmetrically arranged about the center. The conduits in the multilumen locking connector 60 may likewise be symmetrically arranged. However, it may be useful to provide asymmetry or a matching groove and notch in the two mating faces so that the mating faces cannot be interengaged in any other than one position. This will ensure that each time an exterior multilumen catheter tube 80 is attached to the subcutaneously tunneled multilumen catherter set 100 the same lumens will be connected. Therefore, the same drug solutions may be delivered through the plurality of lumens without fear of unwanted mixing in the subcutaneously tunneled catheter set 100. The asymmetry about the center may be provided by giving an irregular shape to one or more of the protrusions and indentations or by an asymmetric positioning of the protrusions and indentations which may be accommodated by directing the conduits in other than a straight line.
The male lock adapter 62 is provided with a shoulder 69 on its outer circumference. The shoulder 69 is provided for abutment against the locking ring 64. The locking ring 64 includes a base 71 and a set of inner threads 73. The base 71 encircles the male lock adapter 62 and is located at the side of the shoulder 69 near the ports 65. Upon interengagement of the faces of the male and female lock adapters. the locking ring 64 may be screwed onto the female lock adapter 40. The tabs 49 of the female lock adapter 40 engage the threads 73 of the locking ring 64 as it is being screwed. When the base 71 of the ring 64 comes into abutment with the shoulder 69 of the male lock adapter 62, the locking ring 64 will be pulling the male and female lock adapters together and may thereby provide a tight seal.
According to a second embodiment of the present invention, it may be uneconomical at times to provide a wire reinforced catheter. As shown in FIG. 5, a single multilumen catheter 10 may be provided with a tissue cuff 20 near its external end. The length of the catheter extending from the patient may be minimized to help avoid kinking. A female lock adapter 40 is connected to the end of the multilumen catheter 10 to provide easy attachment of a variety of adapters, caps and catheters to the implanted catheter. In FIG. 5, the lock adapter 40 is connected to a male lock adapter 62 which is attached to an external multilumen catheter 80.
Referring now to FIG. 6, a multibranch adapter 110 is shown which may be locked onto a multilumen catheter set. The adapter includes a male lock adapter 62 for making a locking connection to the female lock adapter 40 of the subcutaneously tunneled catheter. A single lumen access line 112 is bonded by conventional methods to each of the ports 65 of the male lock adapter. The single lumen access lines 112 may be provided with luer fittings 116 at their outer ends. The luer fittings allow the lumens to be connected in a conventional manner to syringes, pumps, monitors or other hospital equipment having complementary luer fittings. In the preferred embodiment, a protective sheath 114 is located around the bundle of single lumen lines adjacent the rear of the male lock adapter. The protective sheath 114 helps to strengthen the multibranch adapter 110 to help prevent a single lumen line from breaking off from the adapter. However, if a single access line should break off, it is only necessary with the present invention to replace the multibranch adapter with a new multibranch adapter. This is an advantage over prior art catneter sets in which a broken access line may require surgical replacement of the catheter set.
Rather than proceeding with a long infusion process, there are occasions on which a doctor wishes to inject drugs from a syringe into an implanted catheter set or withdraw blood from an implanted catherer set using a syringe. An injection adapter 120 as shown in FIGS. 7A and 7B, provides the doctor with the ability to use a syringe with a standard hypodermic needle to inject fluids into a patient. The injection adapter includes a male lock adapter 62 and a plurality of injection tubes 122 bonded the ports 65 of the male lock adapter 62. The injection tubes 122 are made of rapid plastic tubing which is difficult to pierce. Termination plugs 124 fit into the ends of the injection tubes 122. The plugs 124 are made of a self-sealing rubber, such as silicone. A needle may be inserted through a plug 124 to withdraw blood or inject a fluid. Upon withdrawing the needle from the plug 124, the plug reseals itself.
When the multilumen catheter set is not in use. It is desirable to place a sealing cap 130 on the female adapter 40. The sealing cab 130 is constructed like a male lock adapter 62, however, rather than conduits 66, the sealing cab 130 has solid protrusions 132. Alternatively, a male lock adapter 62 may be used in conjunction with plugs which fit into the conduits 66 to block any fluid flow through the conduits. The sealing cap 130 includes a top shoulder 134 which keeps locking ring 64 from coming off the cab.
A multipurpose cap which combines the functions of the injection adapter, octopus adapter and sealing cab is also possible. Referring to FIG. 9, the mutipurpose cap 140 includes an injection tube 122, a single lumen access line 112 and two plugs 144. Although only one particular combination is illustrated, any other desirable combination of injection tubes, single lumen access lines and plugs is also possible. The multipurpose cap shown in FIG. 9 permits infusion of a fluid through one lumen of the catheter set and hypooermic injections through a second lumen of the set.
According to the present invention, it is no longer necessary to provide a number of single lumen catheters for infusing a patient with a plurality of drug solutions. Single lumens may be used, if desired, but the present invention advantageously provides the ability to hook a single multilumen catheter to the patient for provision of an infusion regimen involving a number of drug solutions. Therefore, only a single pump is required to provide an infusion of fluids to the patient. Using a multilumen catheter is especially advantageous where the drug solutions may not be mixed together and provided in a single tube. A further advantage of the present invention is that only a single sealing cap is required to close off the implanted catheter set. Prior art multilumen systems which have a number of single lumen catheters hanging from the patient would require a cap for each lumen. These prior art catheter sets are more bulky, are more susceptible to being pulled upon while a patient is dressing or undressing and are more noticeable under clothing.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. For example, a snapping mechanism may be used to replace the screwable locking ring of the multilumen locking connector. Also, any appropriate number of lumens may be used, the invention is not restricted to the four shown. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Tai, Henry T. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Tai, Henry T. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | Tai Henry T.,Pacific Palisades,CA,US | | Inventor Count: 2 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Truluck, Dalton L. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1987-10-20 | | Publication Month: 10 | | Publication Year: 1987 | | Application Number: US1985795906A | | Application Country: US | | Application Date: 1985-11-07 | | Application Month: 11 | | Application Year: 1985 | | Application with US Provisional: US1985795906A | 1985-11-07 | | Priority Number: US1984678481A | | Priority Country: US | | Priority Date: 1984-12-05 | | Priority Date - Earliest: 1984-12-05 | | Priority Month: 12 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US1984678481A
| 1984-12-05
| US4581012A
| 1986-04-08
| Continuation-in-part
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000100, A61M0005158, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000100
| A
| A61
| A61M
| A61M0001
| A61M000100
|
A61M0005158
| A
| A61
| A61M
| A61M0005
| A61M0005158
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| A61M 39/0247
A61M 5/1582
A61M 39/10
| A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604043, 604175, 604256, 604533, 604283, 2851371 | | US Class (divided): 604/043, 604/175, 604/256, 604/533, 604/283, 285/1371 | | US Class - Main: 604043 | | US Class - Original: 604043 | 604175 | 604256 | 604283 | 2851371 | | ECLA: A61M003902T, A61M0005158B, A61M003910, K61M003910W | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
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| -
| 0 (Examiner)
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| Title: MULTI-PURPOSE MULTI-LUMEN CATHETER |
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| I FLOW CORP
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| 0 (Examiner)
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| Title: Multilumencatheter set |
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| Schlesinger Robert M.
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| -
| 0 (Examiner)
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| 0 (Examiner)
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| |
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| 0 (Examiner)
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| Title: Diverter for blood transfusion apparatus |
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| ANTEC SYSTEMS
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| 0 (Examiner)
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| Title: PATIENT MONITORING APPARATUS AND METHOD |
| |
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| BERGIN GMBH
| -
| 0 (Examiner)
|
| Title: Mehradrige Schlauchleitung, insbesondere Hochdruckschlauchleitung fuer den untertaegigen Bergbau |
| |
US4585435A
| 1986-04-29
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| -
| 0 (Examiner)
|
| Title: Extension set for drug delivery |
| |
US4551130A
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|
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| |
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| EVANOSKI III CONSTANT J
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| 0 (Examiner)
|
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| |
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| 0 (Examiner)
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| Title: Sterile connectors |
| |
US4133312A
| 1979-01-09
| Burd Samuel
| CORDIS DOW CORP
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| 0 (Examiner)
|
| Title: Connector for attachment of blood tubing to external arteriovenous shunts and fistulas |
| |
US4578063A
| 1986-03-25
| Inman Charles M.
| GORE & ASS
| -
| 0 (Examiner)
|
| Title: Central venous catheter |
| |
US4327722A
| 1982-05-04
| Groshong LeRoy E.
| GROSHONG LEROY E
| -
| 0 (Examiner)
|
| Title: Methods and apparatus for intravenous therapy and hyperalimentation |
| |
WO1983000812A1
| 1983-03-17
| STRAESSLE Rudolf N.
| ARS PRO MEDICO AG
| -
| 0 (Examiner)
|
| Title: CONNECTION DEVICE FOR A CONDUIT FOR MEDICAL USE |
| |
US4340148A
| 1982-07-20
| Beckham David S.
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: Luer cap |
| |
DE2845346A1
| 1980-04-24
| Antrag auf Nichtnennung des/der Erfinder/s
| STERIMED GMBH
| -
| 0 (Examiner)
|
| Title: Verbindungsmuffe, insbesondere fuer Wunddrainage-Schlaeuche |
| |
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| BAXTER HEALTHCARE SA
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| | Count of Citing Patents: 99 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
1999-10-20
| SULP
| +
|
| Description: SURCHARGE FOR LATE PAYMENT |
| |
1999-10-20
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1999-05-11
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1995-04-20
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1991-04-19
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1985-11-07
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, P. O. BOX 7000-622 REDONDO BEA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNORS:BROWN, ERIC W.; TAI, HENRY T.; REEL/FRAME:004481/0425 1985-11-04 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION A CORP OF CALIFORNIA,REDONDO BEACH,CA,US
| BROWN, ERIC W.
| 1985-11-04
| 004481/0425
| 1985-11-07
|
TAI, HENRY T.
| 1985-11-04
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS CUSHMAN & PFUND 130 WATER STREET BOSTON, MA. 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4701159A
| 19871020
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
EP185977A1
| 19860702
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
US4581012A
| 19860408
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumencatheter set |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4701159A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4701159A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 8/43 | | US4695273A | Multiple needle holder and subcutaneous multiple channel infusion port | | Publication Number: US4695273A | | Title: Multiple needle holder and subcutaneous multiple channel infusion port | | Title (Original): Multiple needle holder and subcutaneous multiple channel infusion port | | Title (English): Multiple needle holder and subcutaneous multiple channel infusion port | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Multiple needle holder for multi-lumen catheter connector has housing mounting needles to align with lumens | Abstract:
A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | Abstract (English):
A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (Spanish): | Claims:
I claim:
1. A multiple needle holder comprising:
*
a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face;
*
a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and
*
means extending outwardly from said housing wall for engaging a locking mechanism.
2. The needle holder of claim 1 wherein said means for engaging a locking mechanism comprises a flange extending outwardly from said housing wall.
3. The needle holder of claim 1 wherein each of said plurality of needles is curved.
4. The needle holder of claim 1 wherein the rear face of said housing is perpendicular to the front face of said housing.
5. A multiple channel infusion port comprising:
*
a housing including a housing wall and a base;
*
a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face;
*
a plurality of isolated chambers adjacent the inner face of said septum;
*
a sealing wall separating each of said isolated chambers from one another; and
*
a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
6. The mutliple channel infusion port of claim 5 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
7. The multiple channel infusion port of claim 5 further comprising slot means in the base of said housing for enabling sutures to be applied therethrough.
8. The multiple channel infusion port of claim 5 wherein said housing includes a top portion having solid portions overlying said sealing wall and openings superimposed over said chambers.
9. A multiple needle holder and infusion port comprising:
*
a housing having a rear face and a front face,
*
a plurality of needles secured within said housing and extending from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and
*
an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers.
10. The multiple needle holder and infusion port of claim 9 wherein said infusion port includes a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
11. The multiple needle holder and infusion port of claim 10 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
12. The multiple needle holder and infusion port of claim 9 further comprising slot means on said infusion port for enabling sutures to be applied therethrough.
13. The multiple needle holder and infusion port of claim 9 wherein the rear face of said housing is perpendicular to the front face of said housing. | | Claims Count: 13 | Claims (English):
I claim:
1. A multiple needle holder comprising:
*
a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face;
*
a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and
*
means extending outwardly from said housing wall for engaging a locking mechanism.
2. The needle holder of claim 1 wherein said means for engaging a locking mechanism comprises a flange extending outwardly from said housing wall.
3. The needle holder of claim 1 wherein each of said plurality of needles is curved.
4. The needle holder of claim 1 wherein the rear face of said housing is perpendicular to the front face of said housing.
5. A multiple channel infusion port comprising:
*
a housing including a housing wall and a base;
*
a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face;
*
a plurality of isolated chambers adjacent the inner face of said septum;
*
a sealing wall separating each of said isolated chambers from one another; and
*
a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
6. The mutliple channel infusion port of claim 5 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
7. The multiple channel infusion port of claim 5 further comprising slot means in the base of said housing for enabling sutures to be applied therethrough.
8. The multiple channel infusion port of claim 5 wherein said housing includes a top portion having solid portions overlying said sealing wall and openings superimposed over said chambers.
9. A multiple needle holder and infusion port comprising:
*
a housing having a rear face and a front face,
*
a plurality of needles secured within said housing and extending from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and
*
an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers.
10. The multiple needle holder and infusion port of claim 9 wherein said infusion port includes a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
11. The multiple needle holder and infusion port of claim 10 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
12. The multiple needle holder and infusion port of claim 9 further comprising slot means on said infusion port for enabling sutures to be applied therethrough.
13. The multiple needle holder and infusion port of claim 9 wherein the rear face of said housing is perpendicular to the front face of said housing. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multiple needle holder comprising:
*
a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face;
*
a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and
*
means extending outwardly from said housing wall for engaging a locking mechanism. | Independent Claims:
1. A multiple needle holder comprising:
*
a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face;
*
a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and
*
means extending outwardly from said housing wall for engaging a locking mechanism.
5. A multiple channel infusion port comprising:
*
a housing including a housing wall and a base;
*
a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face;
*
a plurality of isolated chambers adjacent the inner face of said septum;
*
a sealing wall separating each of said isolated chambers from one another; and
*
a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
9. A multiple needle holder and infusion port comprising:
*
a housing having a rear face and a front face,
*
a plurality of needles secured within said housing and extending from the front face of said housing;
*
a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and
*
an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers. | Description:
BACKGROUND OF THE INVENTION
This invention relates to devices for providing infusions of a plurality of fluids repeatably to a patient. In particular, the invention relates to a multiple needle holder and subcutaneous multiple channel infusion port.
Implantable vascular access devices are well known in the art. A conventional implantable port includes a single reservoir having a catheter attached thereto. The catheter is fed into a blood vessel in a patient's body. Fluid injected into the reservoir of the implanted port flows through the catheter and into the blood stream. The infusion port is implanted beneath the skin of the patient. The top of the port has a septum which is penetrable by a hypodermic needle. Thus, conventional injections of medicament into a patient having an implanted port are made by inserting a needle through the patient's skin and through the septum in the infusion port. Fluid is injected through the needle and into the reservoir of the port where it passes into the catheter and out into the blood stream.
Experimentation and advances in medicine are creating new needs for infusing more than a single fluid into a patient. There are many applications for which there is a need for intravenous administration of a plurality of fluid solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. The use of implanted infusion ports for delivering drug solutions to a patient are desirable since they deliver the fluid solution directly into the blood stream where it is quickly delivered throughout the body.
A dual reservoir double lumen implantable vascular access port is presently available. This dual lumen implantable port made available by Cormed, Inc. of Medina, New York has two separate stainless steel reservoirs mounted in a silicone rubber base. Each reservoir is connected to an individual branch of a double lumen catheter. Each reservoir has its own septum through which a needle may be inserted to inject fluid into a patient. This dual lumen port has the limitation of only allowing for the injection of two fluids simultaneously. A further disadvantage of this device is that, when used for continuous infusion, two separate catheters would hang from the patient, each connected to one of two needles.
SUMMARY OF THE INVENTION
This invention is directed to a multiple needle holder adapted for engagement with a multilumen locking connector and a subcutaneous multiple channel infusion port.
According to the multiple needle holder of the present invention, a plurality of needles extend from the front face of a housing. At the rear of the housing are a plurality of inlet openings each opening provided in a separate engagement port. A flange extends from the housing for engagement with a locking ring on a multilumen locking connector. Each lumen of the multilumen connector engages one of the engagement ports at the rear of the housing of the needle holder. Each of the needles on the needle holder is in communication with an inlet opening at the rear of the housing. Thus, upon connection to a multilumen catheter each needle is in communication with one of the lumens of that catheter.
In accordance with the multiple channel subcutaneous infusion port of the present invention, the infusion port provides a plurality of isolated chambers. A penetrable septum overlies the isolated chambers. A multilumen catheter is connected to the infusion port and extends therefrom. Each lumen of the multilumen catheter is connected to a different one of the isolated chambers by a chamber access tube. Each isolated chamber is adjacent the inner surface of the septum such that a plurality of needles aligned in parallel can be inserted through the septum, each needle entering a different one of said isolated chambers.
It is an object of the present invention to provide a single implantable port which can be used in the injection of a plurality of fluid solutions. It is a further advantage of the present invention that it keeps each of the plurality of fluids solutions being injected into the port isolated from one another until the fluid reaches the blood stream. The present invention advantageously provides for infusion of a plurality of fluids into an implanted infusion port through the use of a single catheter and needle holding device.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view in partial cross-section of the needle holder and infusion port of the present invention as they would appear in use on a patient.
FIG. 2 is a top view of the multiple channel subcutaneous infusion port of the present invention.
FIG. 3 is a side view of the infusion port of FIG. 2.
FIG. 4 is a cross-sectional view of the needle holder of the present invention and a multilumen locking connector.
FIG. 5 is a rear plan view of the needle holder of the FIG. 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings, FIG. 1 shows a multiple channel needle holder 10 with its needles 12 inserted into a multiple channel subcutaneous infusion port 20. The infusion port 20 is implanted within the layer of fatty tissue 23 underneath the skin surface 21. Sutures 22 hold the infusion port to the muscle wall 25 beneath the fatty tissue. The sutures 22 are applied through slots 24 distributed around the edge portion of a base 26 of the infusion port 20. The needles 12 penetrate septum 28 at the top portion of the infusion port and extend through into a plurality of isolated chambers 30. The drawings show a needle holder and multichannel infusion port with four needles and isolated chambers respectively, however, it should be understood that the invention is not limited to any specific number of needles or chambers.
The needle holder 10 is shown attached to a multilumen catheter 40 by a multilumen locking connector 50. A multilumen locking connector which may be used in conjunction with the needle holder of the present invention is described in allowed U.S. patent application Ser. No. 678, 481, filed Dec. 5, 1984 which will issue as U.S. Pat. No. 4,581,012 on Apr. 8, 1986 and sharing the same Assignee as the present invention. The disclosure of said patent is hereby incorporated by reference herein. As shown in FIG. 1, the locking connector 50 includes a locking ring 52 which engages a flange 14 on the outside of the housing of the needle holder 10. FIG. 1 shows the locking ring 52 prior to engagement with the flange 14.
In operation, individual fluid solutions are passed through each lumen of the multilumen catheter 40 into the needle holder 10 where they are injected through the needles 12 into the isolated chambers 30 of the infusion port 20. The fluids continue out of the infusion port 20 through a subcutaneous multilumen catheter 60. Each fluid solution thus remains isolated from each of the other fluid solutions until it reaches the blood stream at the end of the catheter 60.
Referring now to FIGS. 2 and 3, the multichamber subcutaneous infusion port is discussed in greater detail. The housing of the port includes a housing wall 32 resting upon the base 26 of the port. Located within the housing are sealing walls 34 which isolate each chamber 30 from one another and a septum 28 which overlies the sealing walls 34 to enclose the chambers 30. A silicon gasket may be placed between sealing walls 34 and base 26 to aid in sealing the chambers. The housing wall 32, base 26 and sealing walls 34 are preferably made out of stainless steel. The inner face of the septum 28 is adjacent the chambers 30 and is on the opposite side of the septum from an outer face which is exposed through the top of the housing. The septum 28 is made of a penetrable self sealing material, typically silicone. A multilumen catheter 60 is connected to the infusion port 20 through a hole in the housing. Each lumen of the multilumen catheter is in communication with a chamber access tube 36. There is a chamber access tube 36 for each lumen. Each chamber access tube 36 is in communication with a different one of the isolated chambers 30 for conducting fluid out its respective chamber. In the preferred embodiment shown, the hole in the housing is adjacent two chambers 30. The access tubes 36 for these chambers feed immediately into the multilumen catheter 60. A conduit 37 through a sealing wall 34 provides space for the two other access tubes 36 which extend into their respective chamber 30 near the center of the infusion port 20.
In the preferred embodiment, press fit assembly pins 38 hold the housing wall 32 to the base 50. The top portion of the housing 32 holds the septum 28 in place over the sealing walls 34. The top portion of the housing can be shaped as the sealing walls 34 to provide solid portions over the sealing walls and openings superimposed over said chambers so that a needle injected into the septum 28 will be inserted into a chamber 30 rather than a sealing wall 34. Slots 24 are provided about the periphery of the base 50. Sutures may be applied through the slots to hold the infusion port in place within the patients body.
The needle holder 10 of the present invention shall now be described with reference to FIGS. 4 and 5. The needle holder 10 of FIG. 4 is shown with curved needles 12. The needle holder is made with a housing 11, preferably made from plastic. Curved needles are an alternative to the straight needles shown in FIG. 1. Curved needles advantageously hold more securely onto an infusion port. The needles 12 are secured within the housing 11 by a conventional bonding technique, such as gluing or potting. The insertion end of the needles extend out from the front face of the housing 11. The needles 12 are in fluid communication with the inlet openings 18 at the rear face of the housing 11. Each of the openings 18 is located within an engagement port 16. In the embodiment shown the engagement port 16 are female connectors for engagement with the male connectors of a multilumen catheter connector 50. It would be equally possible to interchange this arrangement and provide male engagement ports 16 on the needle holder 10 and female connectors on the multilumen catheter connector 50. A flange 14 extends from the needle holder 10 for engaging the multilumen locking connector 50. As shown in FIG. 4, the multilumen locking connector 50 includes a locking ring 52 which has a threaded interior. The threaded interior engages the flange 14 and allows the connector to be screwed tightly onto the needle holder. The combination of multilumen catheter 40, multilumen catheter connector 50 and needle holder 10 provide four individual passageways for four separate fluid solutions.
The needle holder may be changed so that the front face and rear face of the needle holder housing are perpendicular to each other. This would advantageously allow the external catheter 40 to lie flat against a patient's body when the needle holder 10 is inserted into the infusion port 10.
Of course, it should be understood that various other changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. For example, the subcutaneous catheter can be connected to the infusion port through the base instead of the housing. This and other changes can be made without departing from the spirit and the scope of the invention and without diminishing its attendent advantages. It is therefore intended that such changes and modifications be covered by the following claims: | | Assignee/Applicant: I Flow Corporation,Torrance,CA,US | | Assignee/Applicant First: I Flow Corporation,Torrance,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Torrance,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Pellegrino, Stephen C. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1987-09-22 | | Publication Month: 09 | | Publication Year: 1987 | | Application Number: US1986849408A | | Application Country: US | | Application Date: 1986-04-08 | | Application Month: 04 | | Application Year: 1986 | | Application with US Provisional: US1986849408A | 1986-04-08 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M003700, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M003700
| A
| A61
| A61M
| A61M0037
| A61M003700
|
A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0208
A61M 39/10
| A61M 2039/0211
A61M 2039/1072
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604173, 604175, 604244, 604539, 604283 | | US Class (divided): 604/173, 604/175, 604/244, 604/539, 604/283 | | US Class - Main: 604173 | | US Class - Original: 604173 | 604175 | 604283 | 604244 | | ECLA: A61M003902B, A61M003910, K61M003902B2, K61M003910V | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Cormeditations, Sep. 1985, Issue No. 8. | Port-A-Cath, "Totally Implantable Drug Delivery System", (Advertisement). | MediPort, "Totally Implanted Vascular Access Device", Copyrighted 1983. | | Count of Cited Refs - Non-patent: 3 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
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| |
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| MITCHELL W PANEK
| -
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|
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| |
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| UNIV UTAH RES FOUND
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| ALZA CORP
| -
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| I FLOW CORP
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| RENAL SYSTEMS
| -
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|
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US4417888A
| 1983-11-29
| Cosentino Louis C.
| RENAL SYSTEMS
| -
| 0 (Examiner)
|
| Title: Percutaneous implant |
| |
US3640269A
| 1972-02-08
| Delgado Jose M. R.
| JOSE M R DELGADO
| -
| 0 (Examiner)
|
| Title: FLUID-CONDUCTING INSTRUMENT INSERTABLE IN LIVING ORGANISMS |
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| -
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| -
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| AMERICAN HOSPITAL SUPPLY CORP
| -
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| ANIMAL SYSTEMS INC
| -
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| -
| 0 (Examiner)
|
| Title: PERCUTANEOUS IMPLANT |
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| FREEMAN DOMINIQUE M
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US8974422B2
| 2015-03-10
| STREATFIELD GILL STEVEN
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US8998860B2
| 2015-04-07
| SHEETZ KEVIN W
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USD416623S1
| 1999-11-16
| Incutech Inc.
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USD676955S1
| 2013-02-26
| BARD INC C R
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USD682416S1
| 2013-05-14
| TREBELLA MATTHEW R
|
WO1998031417A2
| 1998-07-23
| BARD INC C R
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WO1999042166A1
| 1999-08-26
| BARD INC C R
|
WO2007140381A2
| 2007-12-06
| KIM STANLEY
|
WO2008062173A1
| 2008-05-29
| RENISHAW PLC
|
WO2012099846A1
| 2012-07-26
| NAVILYST MEDICAL INC
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WO2012135805A2
| 2012-10-04
| MODERNA THERAPEUTICS
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WO2013117662A1
| 2013-08-15
| RENISHAW IRELAND LTD
|
| | Count of Citing Patents: 101 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
1999-11-30
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 1999-09-22 |
| |
1999-09-19
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
1999-04-13
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1995-03-06
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1990-12-17
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1986-04-08
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION 3302 SEPULVEDA BLVD. SUITE D, T ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:004551/0845 1986-04-01 |
| |
1986-04-08
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:004551/0845 1986-04-01 |
| |
| | Post-Issuance (US): EXPI Expiration 1999-09-22 1999 Sep. 22, 1999 due to failure to pay maintenance fees | | Maintenance Status (US): E3 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION,TORRANCE,CA,US
| BROWN, ERIC W.
| 1986-04-01
| 004551/0845
| 1986-04-08
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4695273A
| 19870922
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
CA1264261A1
| 19900109
| BROWN ERIC W
| I FLOW CORP
|
| Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT |
| |
EP241159A2
| 19871014
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
EP241159A3
| 19871202
| Brown Eric W.
| I-FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
JP62240069A
| 19871020
| ERITSUKU DABURIYU BURAUN
| FUROO CORP I
|
| Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4695273A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4695273A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 9/43 | | US4687475A | Method for sequential intravenous infusion of multiple fluids | | Publication Number: US4687475A | | Title: Method for sequential intravenous infusion of multiple fluids | | Title (Original): Method for sequential intravenous infusion of multiple fluids | | Title (English): Method for sequential intravenous infusion of multiple fluids | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Sequential intravenous solns. admin. method by sepg. two solns. in catheter by predetermined amt. of spacer soln. | Abstract:
A method of sequential intravenous infusion of a plurality of fluid solutions is disclosed in which a spacer solution is administered alternately with the fluid solutions to prevent the fluid solutions from substantially mixing with one another. | Abstract (English):
A method of sequential intravenous infusion of a plurality of fluid solutions is disclosed in which a spacer solution is administered alternately with the fluid solutions to prevent the fluid solutions from substantially mixing with one another. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A method of sequential intravenous infusion of a plurality of fluid solutions is disclosed in which a spacer solution is administered alternately with the fluid solutions to prevent the fluid solutions from substantially mixing with one another. | | Abstract (Spanish): | Claims:
We claim:
1. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising:
*
providing a valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said plurality of solutions to different inputs of said valve;
*
connecting a lumen of a catheter tube to the output of said valve; and
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said lumen of said catheter tube. | | Claims Count: 1 | Claims (English):
We claim:
1. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising:
*
providing a valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said plurality of solutions to different inputs of said valve;
*
connecting a lumen of a catheter tube to the output of said valve; and
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said lumen of said catheter tube. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising:
*
providing a valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said plurality of solutions to different inputs of said valve;
*
connecting a lumen of a catheter tube to the output of said valve; and
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said lumen of said catheter tube. | Independent Claims:
1. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising:
*
providing a valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said plurality of solutions to different inputs of said valve;
*
connecting a lumen of a catheter tube to the output of said valve; and
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said lumen of said catheter tube. | Description:
BACKGROUND OF THE INVENTION
This invention relates to the intravenous admininstration of multiple fluids.
There are many medical applications for which an intravenous infusion for a multiplicity of fluid solutions can be beneficial. One such application is chemotherapy infusions used in cancer treatment. This was recognized in the recent 13th Annual Cancer Course, given Mar. 1-3, 1984, by the Harvard Medical School and New England Deaconess Hospital. In the syllabus article entitled "Multi-Drug Infusion Chemotherapy: the Delivery of Two or More Drugs Simultaneously", Dr. Jacob J. Lokich described techniques for mixing drug solutions to form a combination which can be delivered to a patient by continuous intravenous infusion. The use of combination multi-drug chemotherapy has been developing in medicine since the 1960's. It has been used for such diseases as acute leukemia, Hodgkins disease, lung cancer, breast cancer and ovarian cancer. Unfortunately, there are only a limited number of drug combinations which have been found to be compatible and stable and which can produce a synergistic effect when administered.
There are many drugs which may not be used simultaneously because of reactions between the drugs which make infusion impracticable or undesirable. Some drugs react and thereby neutralize one another. Other drugs react to form precipitates which may clog the catheter tubing or even worse cause an embolism in the patient. Thus, according to present multi-drug combination treatments, physicians are limited in their choice of drug solutions.
SUMMARY OF THE INVENTION
This invention is directed to a method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution through a catheter tube followed by the contiguous administration of a predetermined amount of spacer solution. The spacer solution is then contiguously followed by a second fluid solution. Apparatus is provided for electronically changing the solution being provided from one to another. The amount of spacer solution which would be used between fluid solutions would be prescribed by the physician and should be large enough to prevent the first and second fluid solutions from substantially mixing.
The method of the present invention enormously increases the number of variations available to physicians for treating cancer and other diseases with multiple drug infusions. Since the intravenous spacer solution prevents the drug solutions from substantially mixing with one another before entering the body, drug solutions which were formerly incompatible because of deleterious reactions may now be tried as potentially beneficial treatments. Once a drug solution is infused into the patient the blood stream carries the drug away so quickly that it is usually safe to follow the drug solution with another solution after the spacer. By sequentially alternating between drug solutions and spacer solutions many new multiple drug treatments may be developed.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an elevational view of an apparatus for performing the method of the present invention.
FIG. 2 is a sectional view of the catheter tube of FIG. 1 demonstrating the method of the present invention.
FIG. 3 is a cross-sectional view of the catheter tube of FIG. 1 after the spacer solution has been pumped through a length of catheter tubing.
FIG. 4 is an elevational view of a peristaltic pump for use in the method of the present invention.
FIG. 5 is an elevational view of a syringe-type cartridge pump for use in the method of the present invention.
FIG. 6 is a cross-sectional view of a valve of the present invention.
FIG. 7 is a sectional view taken along lines 3--3 of the valve in FIG. 6.
FIG. 8 is another elevational view of the apparatus of FIG. 1.
FIG. 9 is a sectional view of the apparatus of FIG. 8 taken along lines 5--5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Turning now to the drawings, FIG. 1 illustrates an apparatus for performing the method of the present invention. The apparatus is described in the inventors' copending application U.S. Ser. No. 619,847 entitled "Apparatus and Method for Administering Multiple Fluid Infusions", sharing the same filing date and assignee as the present invention. The inventors' copending application is hereby incorporated by reference herein. Their apparatus enables one to switch between different fluid solutions being intravenously administered through a catheter tube without allowing any air bubbles to enter into the line. A valve 110 receives inputs from a plurality of fluid solution sources and has a primary input for a spacer solution 10 source. The valve 110 switches between sources to alternately provide one of the fluid solutions and the spacer solution 10.
The valve 110 is mounted on control apparatus 120. The valve 110 is shown receiving four inputs from intravenous fluid solution sources. The valve 110 includes rotary core member 112. The rotary core member 112 has an output passageway 114 which is connected to a catheter tube 20 for delivering fluid to a patient. A pump 140 is coupled to the catheter tube for delivering the fluid at a predetermined speed. The pump 140 which is used with the present invention may be any conventional type of infusion pump. The presently preferred embodiment uses a peristaltic pump 30 which is especially well-suited for long duration infusions. The use of a syringe-type cartridge pump 40 is allowable for situations where a higher pressure is required and where larger fluid volumes may be infused into the patient.
Control apparatus 120 has a control panel 22 by which an operator can program the control apparatus 120 to infuse predetermined amounts of each fluid solution into the patient through the catheter tube 20. An operator would indicate to the apparatus 120 the quantity of each fluid to be pumped per unit time through the catheter tube. The apparatus 120 then computes the required pump speed and displays this information to the operator. The operator sets the pump 140 at this speed. The programmed apparatus automatically switches the valve 110 between fluid solutions to administer the prescribed regimen.
One of the inputs into the valve 110 is a neutral solution which is used as an isolator between drug solutions thereby preventing any substantial premixing of the solutions in the catheter tube 20. The control apparatus 120 will always alternate between the neutral solution and one of the drug solutions. This is the method of the present invention described below after the description of the apparatus.
It is highly important that the infused fluid solutions are not contaminated. Therefore, it is important that the valve 110 be sterile. The presently preferred embodiment employs a disposable plastic valve 110 which can withstand a conventional sterilization process.
The apparatus of the present invention individually connects a fluid solution through an input site 18 in the valve 110 with an output passageway 114 through the rotary core member 112 of the valve 110. The output passageway 114 is directly connected with the catheter tube 20. During the time interval in which the rotary core member 112 is turned to switch the connection from one solution to another, there is an instant in which both the input site 18 and the conduit 50 are exposed to the output passageway 114. Then there is an interval in which solely the neutral solution is pumped from conduit 50 through the catheter tube 20. Thus, the flow of fluid into the catheter tube 20 is continuous and is never interrupted. As the rotary core member 112 is turned to switch from conduit 50 to an input site 18, the flow of fluid into the catheter tube 20 is similarly continuous and never interrupted.
Referring now to FIGS. 6 and 7, the valve of the present invention may be described in greater detail. The valve 110 is supported in a hollow cylindrical housing 116. The housing 116 is mountable on the apparatus 120 by its mounting holes 15 and a lip 24. At the top of the valve 110, lip 24 extends outward so as to fit under ridge 25 which extends from control apparatus 120. Pins 23 projecting out of the control apparatus 120 snap into the mounting holes 15. Any conventional mounting means may be substituted for the mounting holes 15 and lip 24 as long as the valve 110 can be securely held in place and may be easily dismounted for replacement with a new sterile valve 110.
The housing 116 includes a plurality of input sites. In the preferred embodiment, there is one primary site 17 and a plurality of secondary sites 18. Each input site is a hole through the circumference of the hollow housing 116. The input site accommodates a hollow cylindrical shaft. In the case of the secondary input sites, the hollow cylindrical shafts 19 extend through the hollow housing 116 and into contact with sealing means surrounding the rotary core member 112. In the preferred embodiment, it is the circumference 13 of the rotary core member 112 which contacts and seals the cylindrical shafts 19. The ends of the shafts 19 are ground with a curve matching that of the circumference 13 of the rotary core member 112 so that the shafts lie flush against the circumference 13 to effectuate a seal. It would be possible however to provide a washer type device about the rotary core member to function as the sealing means.
The output passageway 114 extends through rotary core member 112 from an access hole 11 in the circumference 13. When the access hole is not aligned with a secondary input site 18, that input site 18 will be sealed closed by the circumference 13. The primary input site 117 has a shaft 21 which does not extend to the sealing means on the rotary core member 112. Thus, access is always maintained between the primary input site 17 and a conduit 50 which surrounds the rotary core member 112. In the presently preferred embodiment, the conduit 50 is formed by the rotary core member 112 itself. The rotary core member 112 is spool-shaped to form the channel-like conduit 50 about its circumference. The conduit 50 is formed with circumference 13 as the floor and sidewalls extending from the planar surface ends of the core member 112. The conduit 50 is wider than the outer circumference of the hollow cylindrical shafts 19. Thus, as shown in FIG. 7, the conduit 50 extends around each of the secondary input sites. This enables the neutral solution which is fed through the primary input site 17 to fill the conduit 50 all the way around the rotary core member 112.
The conduit 50 simplifies the sequential switching operation of valve 110. Since treatments involve a plurality of drugs, it is desirable to avoid substantial mixing of the drugs in the catheter tube 20. To accomplish this, the neutral solution is accessed after each use of a drug solution. The conduit 50 provides access to the neutral solution between adjacent secondary input sites 18. Thus, the core member 112 can rotate directly from one solution to another and still access neutral solution in between. This construction also promotes protection against air bubbles in the line. The access hole 11 is made wider than the walls of the hollow shafts 19 so that fluid can be continuously pulled through the catheter tube 20. As the access hole 11 is moved out of direct alignment with a secondary input site 18, it will be instantaneously exposed to solution from the input site 18 and from the conduit 50. Then it will allow passage solely of the neutral solution from the conduit 50. Thus, there will be a continuous flow of fluid which will prevent air bubbles from ever forming within the system.
At the external end of each hollow cylindrical shaft 19, there is a male luer connector for mating with a female luer connector on the polymer catheter tube bringing fluid from the intravenous fluid solution source. Any conventional connecting means may be substituted for the present male-female luer connection.
The conduit 50 carrying the neutral solution must be sealed to prevent leakage. In the presently preferred embodiment, a double seal is provided by the rotary core member 112 against the hollow cylindrical housing 116. The outer planar surfaces of the rotary core member 112 frictionally engage an inner wall of a channel 26 within the inner circumference of the hollow cylindrical housing 116. The outermost circumference of the sidewalls of the rotary core member 112 frictionally engages the floor of the channel 26 in the hollow housing 116. The snug fit of the rotary core member within the hollow housing thus functions to seal the conduit 50.
The output passageway 114 is shown in FIGS. 6 and 7. It extends from the access hole 11 in the circumference 13 of the rotary core member 112 to an output site projecting from one of the planar surfaces of the core. A catheter tube 20 makes connection with the outer projection from the core 112 to provide a path for the fluid to follow. Automatic mechanical rotation of the valve 110 is made possible by the connection of a gear 60 to the rotary core member 112. The teeth of the gear 60 mesh with the teeth of a gear 80 within the control apparatus 120 so that a motor 70 within the control apparatus may control the operation of the valve 110. The engagement of the two gears further contributes to holding the valve 110 in its mounted position on the control apparatus 120.
Referring now to FIGS. 8 and 9, the mechanics of the control apparatus 120 may be explained. A stepping motor 70 rotates a pulley 72. The pulley 72 is connected by a belt 74 to a pulley 76 on a speed reducer 78. The belt 74 thus drives the speed reducer 78. The speed reducer 78 transmits torque from the motor 70 to a gear 80 which is enmeshed with the gear 60 on the valve 110. In the presently preferred embodiment, the speed reducer uses a ratio of 48 to 1. In reducing the speed, the speed reducer 78 effectively increases the torque which is applied to the gear 60 on the valve 110. The increased torque enables the rotary core member 112 to turn against the friction from the hollow housing. Any conventional means of speed reduction may be substituted for the present drive train.
The stepping motor 70 is controlled by a microprocessor located on a circuit board 90 at the rear of the control apparatus 120. Power for the microprocessor circuitry and the motor 70 is provided from a line cord 92 which is connected through a power supply 94. It is preferable to include a backup battery supply which would be automatically switched on should the power supplied over the line cord 92 be disrupted. The microprocessor circuitry also receives inputs from the control panel 22. The control panel 22 is used to program the microprocessor so that one control apparatus 120 may be used to operate the valve 110 for administering an unlimited variety of prescribed regimens.
The apparatus of the invention makes possible the administration of advanced treatments using a plurality of drug solutions. The use of a greater variety of drug solutions is possible since the apparatus allows the use of a neutral solution as a spacer to prevent substantial mixing of the drug solutions in the catheter tube 20. The operation of the apparatus begins with mounting the valve 110 on the control apparatus 120. The fluid solutions are connected to the input sites 18 of the valve 110. A pump 140 is coupled to the catheter tube 20. The pump 140 is turned on and the catheter set is purged of air. The operator causes the valve 110 to turn through each input site position by pressing an appropriate button on the control panel 22. The controls and microprocessor means for implementing the controls may be provided by one skilled in the art. The operator leaves the valve 110 in each input site position until all air bubbles have been removed. The pump is then turned off.
The apparatus may now be initialized. The microprocessor memory is cleared. The volume of the neutral solution source is entered. The volume of the spacer size which is prescribed for use between the fluid solutions is entered. Then the volume of the other fluid solution sources and their prescribed rates of infusion are entered. The pumping rate or speed of pump 140 and the total volume of fluid to be infused per unit time are computed automatically and displayed to the operator on a display 26. The operator then instructs pump 140 to infuse at this speed and for this total volume. After the information has been fed into the microprocessor, thereby programming the apparatus to administer the prescribed regimen, the intravascular access needle on the catheter tube 20 is inserted into the patient and the pump 140 and control apparatus 120 are started.
The infusion process then proceeds automatically. The control apparatus 120 may be provided with an alarm that would sound after a calculated time period elapses which indicates that a solution is in need of refilling. A nurse would stop the pump and press a pause button on the control panel 22. The fluid source would be replaced or refilled. The line is purged if necessary. The new volume of fluid is entered into the control panel 22. Any necessary changes may be made to other variables entered into the apparatus. Then the pump 140 and control apparatus 120 may be restarted.
The apparatus of the present invention only requires a single pump and catheter tube to deliver all of the fluid solutions to the patient. The control panel can be programmed to set the amounts of fluid solutions to be provided to the patient, thereby satisfying a physician's particularly prescribed regimen. The valve of the invention is designed to effectively seal each of the drug solutions from one another so that no undesirable precipitates or reactions occur prior to the infusion. This invention thereby advantageously expands the number of drug solutions available to physicians for use in multiple drug infusion treatments. The neutral solution may be easily accessed between the input sites of the other fluid solutions to provide a spacer between the solutions in the catheter tube 20.
The valve assembly is made of a plastic that may be sterilized by a conventional method. It may be easily mounted and dismounted from the control apparatus so that it may be replaced by a new, sterile valve as needed. The disposability of the valve enhances the integrity of the sterility of the infusion system. The apparatus of the present invention has thus made possible a new and simplified method for administering a number of drug solutions to a patient through a single catheter tube attached to a single pump, without substantially mixing the drugs in the catheter tube.
According to the method of the present invention, the spacer solution 10 is provided for substantially isolating the different fluid solutions during intravenous administration. FIG. 2 shows a first solution 12 and a second solution 14 separated by the spacer solution 10. The solutions are carried by a catheter tube 20 through a needle and into a patient. Pump 140 keeps the fluids moving through the catheter tube 20 at a predetermined rate. The spacer solution 10 must be a solution which is suitable for intravenous infusion into a patient. The spacer 10 must also be neutral with respect to each of the fluid solutions on either side of it. In other words, the spacer solution 10 must not substantially react with either the first fluid solution 12 or the second fluid solution 14 while it is traveling through the catheter tube 20 into the patient. Some solutions may react with one another over a long period of time, however, it is only necessary that there be no adverse reactions prior to the infusion.
There are a number of intravenous solutions which may be selected as the neutral spacer 10, including but not limited to saline solutions, dextrose solutions and intravenous lipid solutions. The appropriate spacer solution 10 should be selected according to a patient's needs. For example, a patient requiring nutritional supplement may receive a high concentration dextrose solution as the spacer, whereas a patient merely requiring liquids may receive a saline solution or a low concentration dextrose solution.
The volume of the spacer solution 10 affects the rate of mixing between the fluid solutions on adjoining sides of the spacer. A spacer with a low volume would have a tendency to allow the adjoining fluids to diffuse more quickly into each other. On the other hand, a spacer with a larger volume would decelerate the rate of diffusion of adjoining drug solutions into each other.
The volume of the spacer solution must be selected so as to avoid substantial mixing between the fluid solutions on either side of the spacer solution 10 in the time that the solutions are in transit within the catheter tube 20. If the diffusion rate between a fluid solution and the spacer solution 10 is rapid, the spacer solution 10 must have a greater volume to avoid mixing of the two isolated fluid solutions. Some insubstantial mixing may be allowed where the first drug solution 12 and the second drug solution 14 are relatively compatible with one another and will not react when in contact to a small extent. For more highly reactive fluid solutions, any amount of mixing would be substantial and must be prevented. Thus, the appropriate volume of spacer 10 depends on a variety of factors.
Because of laminar flow which occurs during the movement of fluids through the catheter tube 20, the type of pump being used will also be determinative of the minimum volume of spacer solution 10 required to separate the first and second fluid solutions. Referring now to FIG. 3, the affects of laminar flow of fluids as they travel through the catheter tube 20 is shown. There is friction between the walls of the catheter tube 20 and the fluids which are flowing through it. This friction slows the outer layers of fluid. Thus, the fastest flowing fluid is found along the center axis of the catheter tube 20. Over a period of travel through the tube the spacer solution 10 develops a convex pointed front side and a concave indented rear side. The volume of spacer solution 10 must be prescribed to be large enough so that the rear edge of the first fluid solution 12 does not substantially overlap the leading front point of fluid solution 14. A cross-section showing such an overlap is illustrated in FIG. 3 at cross-section 16. A peristaltic pump 30, illustrated in FIG. 4, operates by squeezing the catheter tube 20. If there is a cross-section 16 including the first and second fluid solutions as they reach the peristaltic pump 30, upon being squeezed by pump 30 the two solutions would be in direct contact as a result of the pump action. Therefore, it is important that when using a peristaltic pump 30 that there be a cross-section 17 maximally filled with spacer solution 10 as the spacer solution reaches the peristaltic pump 30.
A syringe-type cartridge pump 40, also known as volumetric pump, illustrated in FIG. 5 works in a different manner. The cartridge pump 40 operates by filling and emptying a chamber 42. A valve 44 rotates to switch between a filling and an emptying position. To prevent substantial mixing between fluid solution 12 and second fluid solution 14, it is again necessary to prescribe a sufficient volume of spacer solution 10 to substantially isolate the two fluid solutions. To accomplish this, the spacer solution 10 should encompass a volume which fills a cylindrical cross-section 19 of the tube which is equal to or greater than the volume of the chamber 42. Thus, the pump chamber 42 will be prevented from substantially filling with more than one of the fluid solutions separated by the spacer 10.
The treatment variations made possible by the method of the present invention are numerous. Various drugs, nutrients, electrolytes or other items capable of being delivered in fluid solutions may be sequentially infused into a patient according to the present invention. The number of fluid solutions which may be sequentially infused into a patient are only limited by the ability to connect the solutions by valves to a catheter tube in a manner which continuously administers fluids without allowing any air bubbles into the line. The compatibility and stability of the various fluid solutions with one another are now of less importance. Almost any drug solution which can produce synergistic effects when used in combination, may be infused according to the method of the present invention. By frequently alternating between fluid solutions and spacer, several drug solutions can be administered to a patient in sequence over and over again without the problem of substantial mixing prior to infusion. The patient is thus able to obtain many benefits which may derive from the combination of a plurality of drug solutions. Many new drug solution combinations will be made possible through the use of the present invention.
Of course, it should be understood that various changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. Any intravenous solution which does not react with adjoining fluid solutions may be substituted for the saline, dextrose and lipid solutions of the present invention. These and other changes can be made without departing from the spirit and the scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Torrance,CA,US | | Assignee/Applicant First: I Flow Corporation,Torrance,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Torrance,CA,US | | Assignee Count: 1 | | Inventor: Tai, Henry T. | Brown, Eric W. | | Inventor First: Tai, Henry T. | | Inventor - Original: Tai, Henry T. | Brown, Eric W. | | Inventor - w/address: Tai Henry T.,Pacific Palisades,CA,US | Brown Eric W.,Redondo Beach,CA,US | | Inventor Count: 2 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Rosenbaum, C. Fred / Vinyard, Sherri E. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1987-08-18 | | Publication Month: 08 | | Publication Year: 1987 | | Application Number: US1986849106A | | Application Country: US | | Application Date: 1986-04-07 | | Application Month: 04 | | Application Year: 1986 | | Application with US Provisional: US1986849106A | 1986-04-07 | | Priority Number: US1984619846A | | Priority Country: US | | Priority Date: 1984-06-12 | | Priority Date - Earliest: 1984-06-12 | | Priority Month: 06 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US1984619846A
| 1984-06-12
| -
| -
| Continuation
| Abandoned
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/16827
A61M 5/142
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604248, 604081 | | US Class (divided): 604/248, 604/081 | | US Class - Main: 604248 | | US Class - Original: 604248 | 604081 | | ECLA: A61M0005142, A61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Hickman® and Broviac® Vascular Access Catheters Instructions for Use Evermed, Inc. Revised 1985. | Gray et al., "Multiple Use of TPN Catheter is Not Heresy: Retrospective Review and Initial Report of Prospective Study", Nutritional Support Services, vol. 2, No. 9, pp. 18-21, Sep. 1982. | Hutchinson, Margaret M., "Administration of Fat Emulsions", American Journal of Nursing, Feb. 1982. | | Count of Cited Refs - Non-patent: 3 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4324238A
| 1982-04-13
| Genese Joseph N.
| ABBOTT LAB
| -
| 0 (Examiner)
|
| Title: Equipment sets having a combined air barrier and liquid sequencing device for the sequential administration of medical liquids at dual flow rates |
| |
US4256103A
| 1981-03-17
| Mylrea Kenneth C.
| PAXINOS JAMES
| -
| 0 (Examiner)
|
| Title: Automatic sequential fluid flow apparatus |
| |
US3957082A
| 1976-05-18
| Fuson Robert Lee
| ARBROOK INC
| -
| 0 (Examiner)
|
| Title: Six-way stopcock |
| |
US4094318A
| 1978-06-13
| Burke George K.
| BURRON MEDICAL PROD INC
| -
| 0 (Examiner)
|
| Title: Electronic control means for a plurality of intravenous infusion sets |
| |
US4512764A
| 1985-04-23
| Wunsch Richard E.
| WUNSCH RICHARD E
| -
| 0 (Examiner)
|
| Title: Manifold for controlling administration of multiple intravenous solutions and medications |
| |
US4258712A
| 1981-03-31
| Harms Jack L.
| ABBOTT LAB
| -
| 0 (Examiner)
|
| Title: Equipment sets having a pilot liquid controlled primary tube valve for the sequential administration of medical liquids at dual flow rates |
| |
US4333454A
| 1982-06-08
| Hargest III Thomas S.
| HARGEST III THOMAS S
| -
| 0 (Examiner)
|
| Title: Automatic tubular feeding apparatus and method |
| |
US4316460A
| 1982-02-23
| Genese Joseph N.
| ABBOTT LAB
| -
| 0 (Examiner)
|
| Title: Gravitational flow system for the sequential administration of medical liquids |
| |
US4450079A
| 1984-05-22
| Farr Andrew F.
| IMED CORP
| -
| 0 (Examiner)
|
| Title: Cassette for providing a controlled flow of fluid |
| |
US4391598A
| 1983-07-05
| Thompson Thomas C.
| QUEST MEDICAL INC
| -
| 0 (Examiner)
|
| Title: Intravenous drug additive delivery system with electronic control |
| |
US4265240A
| 1981-05-05
| Jenkins Jon A.
| IMED CORP
| -
| 0 (Examiner)
|
| Title: Apparatus for providing a controlled introduction of intravenous fluid to a patient |
| |
US4257416A
| 1981-03-24
| Prager David
| PRAGER DAVID
| -
| 0 (Examiner)
|
| Title: Multi-channel venipuncture infusion set |
| |
US4219022A
| 1980-08-26
| Genese Joseph N.
| ABBOTT LAB
| -
| 0 (Examiner)
|
| Title: Equipment sets for the sequential administration of medical liquids at dual flow rates having parallel secondary liquid flowpaths wherein one said path is controlled by a liquid sequencing valve |
| |
US4196730A
| 1980-04-08
| Wilson Dennis R.
| WILSON DENNIS R
| -
| 0 (Examiner)
|
| Title: Liquid drug dispenser |
| |
US4191183A
| 1980-03-04
| Mendelson Barry
| MENDELSON BARRY
| -
| 0 (Examiner)
|
| Title: Mixing chamber for use in plural medical liquid intravenous administration set |
| |
US3057350A
| 1962-10-09
| COWLEY CALVIN C
| BAXTER DON INC
| -
| 0 (Examiner)
|
| Title: Administration set |
| |
US4563175A
| 1986-01-07
| LaFond Margaret
| LAFOND MARGARET
| -
| 0 (Examiner)
|
| Title: Multiplesyringe pump |
| |
US4430074A
| 1984-02-07
| Mooring William L.
| DOUGLASS SAMUEL ERNEST
| -
| 0 (Examiner)
|
| Title: Method for the intravenous administration of plural solutions through a common flow monitoring station |
| |
| | Count of Cited Refs - Patent: 18 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
US4925444A
| 1990-05-15
| BAXTER TRAVENOL LAB
|
US5104387A
| 1992-04-14
| ST JUDE MEDICAL
|
US5207643A
| 1993-05-04
| BALLARD MED PROD
|
US6423050B1
| 2002-07-23
| TWARDOWSKI ZBYLUT J
|
US6511472B1
| 2003-01-28
| MICROTHERAPEUTICS INC
|
US7520871B2
| 2009-04-21
| LMA NORTH AMERICA INC
|
US7527608B2
| 2009-05-05
| LMA NORTH AMERICA INC
|
| | Count of Citing Patents: 7 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
1999-10-26
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 1999-08-18 |
| |
1999-08-15
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
1999-03-09
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1995-02-21
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1990-12-13
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
| | Post-Issuance (US): EXPI Expiration 1999-08-18 1999 Aug. 18, 1999 due to failure to pay maintenance fees | | Maintenance Status (US): E3 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4687475A
| 19870818
| Tai Henry T.
| I FLOW CORP
|
| Title: Method for sequential intravenous infusion of multiple fluids |
| |
AU198544965A
| 19860110
| BROWN ERIC W
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
EP182900A1
| 19860604
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
WO1986000022A1
| 19860103
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4687475A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4687475A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 10/43 | | US4604093A | Apparatus and method for administering multiple fluid infusions | | Publication Number: US4604093A | | Title: Apparatus and method for administering multiple fluid infusions | | Title (Original): APPARATUS AND METHOD FOR ADMINISTERING MULTIPLE FLUID INFUSIONS | | Title (English): APPARATUS AND METHOD FOR ADMINISTERING MULTIPLE FLUID INFUSIONS | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Valve connecting fluid sources to catheter is plastic with passage through core rotatable to align with selected inlets | Abstract:
A valve is disclosed which includes a hollow cylindrical housing having a plurality of input sites and a rotary core member having an output pasageway. The input sites which are not in communication with the output passageway are sealed. The valve may also include a primary input site connected to a conduit surrounding the rotary core member of the valve. The valve is demountable on a control apparatus for performing a method of administering a plurality of fluids intravenously to a patient. According to the method of the present invention, a neutral solution is provided in between each of the other different fluid solutions being infused into the patient. The control apparatus of the present invention may be programmed to automatically provide the patient with a prescribed amount of each fluid solution through the catheter tube. | Abstract (English):
A valve is disclosed which includes a hollow cylindrical housing having a plurality of input sites and a rotary core member having an output pasageway. The input sites which are not in communication with the output passageway are sealed. The valve may also include a primary input site connected to a conduit surrounding the rotary core member of the valve. The valve is demountable on a control apparatus for performing a method of administering a plurality of fluids intravenously to a patient. According to the method of the present invention, a neutral solution is provided in between each of the other different fluid solutions being infused into the patient. The control apparatus of the present invention may be programmed to automatically provide the patient with a prescribed amount of each fluid solution through the catheter tube. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A valve is disclosed which includes a hollow cylindrical housing having a plurality of input sites and a rotary core member having an output pasageway. The input sites which are not in communication with the output passageway are sealed. The valve may also include a primary input site connected to a conduit surrounding the rotary core member of the valve. The valve is demountable on a control apparatus for performing a method of administering a plurality of fluids intravenously to a patient. According to the method of the present invention, a neutral solution is provided in between each of the other different fluid solutions being infused into the patient. The control apparatus of the present invention may be programmed to automatically provide the patient with a prescribed amount of each fluid solution through the catheter tube. | | Abstract (Spanish): | Claims:
We claim:
1. A valve demountable on a control apparatus for automatically providing selective communication between one of a plurality of available fluid sources and a catheter tube, the valve comprising:
*
a hollow cylindrical housing having a plurality of input sites for connection with said fluid sources;
*
a core member, rotatably engaged within said housing, having a planar surface on each end and an output passageway extending through said core member from an access hole in a circumference of said core member to an output hole in one of said planar surfaces connected to said catheter tube, said circumference of said core member sealing said input sites such that fluid is prevented from escaping from said input sites except when said access hole is aligned with one of said input sites to provide communication between said input site and said output passageway;
*
conduit means for directing fluid from one of said input sites around said remaining input sites so that said fluid from said one of said input sites is in communication with said access hole whenever said access hole is positioned between two adjacent input sites; and
*
gear means coupled to said core member for transmitting rotational movement from said control apparatus to said core member.
2. The valve of claim 1 wherein said housing, said gear means and said core member are comprised of a sterilizable plastic material.
3. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites.
4. The valve of claim 3 further comprising a drive member coupled to said core member for transmitting rotational movement to said sealing means.
5. The valve of claim 4 wherein said drive member comprises a gear.
6. The valve of claim 4 wherein said housing, said core member, said drive member and said sealing means are comprised of a sterilizable plastic material.
7. The valve of claim 4 further comprising second sealing means between said housing and said core member for sealing fluids within said conduit means.
8. The valve of claim 3 wherein said secondary input sites comprise hollow cylindrical shafts extending from said housing toward said core member to contact flush against said first sealing means.
9. The valve of claim 4 wherein said conduit means is circumferentially formed around said core member between said sealing means and said housing.
10. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites, each of said secondary input sites having a hollow cylindrical shaft extending into said housing;
*
a cylindrical core member rotatable within said housing having flange means extending radially from its circumference and a planar surface on each end, said flange means, said housing and the circumference of said core member forming a conduit in communication with said primary input site, said conduit being wider than the outer diameter of each of said cylindrical shafts and said core member being disposed within said housing such that said cylindrical shafts lie flush against said core member to seal said secondary input sites;
*
an output passageway within said core member, accessible through an access hole in the circumference of said core member, said passageway extending through said core member and out through a projection from one of said planar surfaces of said core member; and
*
a drive member, for rotating said core member to selectively align the access hole of said output passageway with any of said secondary input sites or with said conduit to communicate fluid from one of said input sites or from said conduit into said output passageway.
11. The valve of claim 10 wherein said drive member comprises a gear.
12. The valve of claim 10 wherein said access hole is wide enough to prevent interruption of fluid flow into said output passageway when said core member is rotating said access hole between said conduit and one of said secondary input sites.
13. A method for administering multiple fluid solutions to a patient, said method comprising:
*
providing a sterile valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said multiple fluid solutions to different inputs of said valve;
*
connecting a catheter tube between the output of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined time intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said catheter tube.
14. A method for administering a plurality of fluid solutions to a patient, said method comprising;
*
providing a sterile valve including a cylindrical housing having a primary input and a plurality of secondary inputs, a core member, disposed within said housing, having an output passageway with an access hole through the circumference of said core member, the circumference sealing closed the secondary input when they are not aligned with the access hole of the output passageway, and a conduit, wherein said conduit directs fluid from said primary input around said secondary inputs so that said fluid from said primary input is in communication with said output passageway whenever said access hole is positioned between two adjacent secondary inputs;
*
individually connecting said plurality of fluid solutions to any of said secondary inputs;
*
connecting a neutral solution to said primary input;
*
connecting a catheter tube between the output passageway of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
rotating said core member to alternately switch the output passageway of said valve into communication with said primary input and with one of said secondary inputs at predetermined time intervals, said neutral solution being provided between each fluid solution to prevent any of said fluid solutions from substantially mixing with another fluid solution in said catheter tube.
15. The method of claim 14 wherein said switching is performed automatically by preprogrammed electronic processor means.
16. The method of claim 14 wherein said pump comprises a peristaltic pump.
17. The method of claim 14 wherein said pump comprises a syringe-type cartridge pump.
18. An apparatus for administering multiple drug infusions comprising:
*
(a) a demountable valve including:
*
a hollow cylindrical housing having a primary input site and a pluraltiy of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites; and
*
a drive member, connected to said core member, for rotating said core member to selectively align said access hole with any of said secondary input sites or with said conduit means to communicate fluid from said input site or from said conduit means into said output passageway;
*
(b) motor;
*
(c) drive means coupled to said motor engageable with said drive member; and
*
(d) microprocessor means for controlling said motor to selectively communicate fluids from said input sites through said output passageway for predetermined time intervals in a predetermined sequence.
19. The apparatus of claim 18 wherein said microprocessor means includes means for controlling said motor to communicate fluids through said output passageway in a sequence alternating between fluid from said conduit means and fluid from any of said secondary input sites.
20. The apparatus of claim 18 further comprising a catheter tube in communication with said output passageway and a pump coupled to said catheter tube for causing fluids to flow from said valve through said catheter tube at a predetermined rate.
21. The apparatus of claim 20 wherein said pump comprises a peristaltic pump.
22. The apparatus of claim 20 wherein said pump comprises a syringe-type cartridge pump.
23. The apparatus of claim 18 wherein said drive member in said valve comprises a gear.
24. The apparatus of claim 18 wherein communication of fluid through said access hole is not interrupted by rotation of said core member.
25. The apparatus of claim 18 further comprising means for causing an alarm prior to exhausting a source of fluid supplying one of said input sites. | | Claims Count: 25 | Claims (English):
We claim:
1. A valve demountable on a control apparatus for automatically providing selective communication between one of a plurality of available fluid sources and a catheter tube, the valve comprising:
*
a hollow cylindrical housing having a plurality of input sites for connection with said fluid sources;
*
a core member, rotatably engaged within said housing, having a planar surface on each end and an output passageway extending through said core member from an access hole in a circumference of said core member to an output hole in one of said planar surfaces connected to said catheter tube, said circumference of said core member sealing said input sites such that fluid is prevented from escaping from said input sites except when said access hole is aligned with one of said input sites to provide communication between said input site and said output passageway;
*
conduit means for directing fluid from one of said input sites around said remaining input sites so that said fluid from said one of said input sites is in communication with said access hole whenever said access hole is positioned between two adjacent input sites; and
*
gear means coupled to said core member for transmitting rotational movement from said control apparatus to said core member.
2. The valve of claim 1 wherein said housing, said gear means and said core member are comprised of a sterilizable plastic material.
3. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites.
4. The valve of claim 3 further comprising a drive member coupled to said core member for transmitting rotational movement to said sealing means.
5. The valve of claim 4 wherein said drive member comprises a gear.
6. The valve of claim 4 wherein said housing, said core member, said drive member and said sealing means are comprised of a sterilizable plastic material.
7. The valve of claim 4 further comprising second sealing means between said housing and said core member for sealing fluids within said conduit means.
8. The valve of claim 3 wherein said secondary input sites comprise hollow cylindrical shafts extending from said housing toward said core member to contact flush against said first sealing means.
9. The valve of claim 4 wherein said conduit means is circumferentially formed around said core member between said sealing means and said housing.
10. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites, each of said secondary input sites having a hollow cylindrical shaft extending into said housing;
*
a cylindrical core member rotatable within said housing having flange means extending radially from its circumference and a planar surface on each end, said flange means, said housing and the circumference of said core member forming a conduit in communication with said primary input site, said conduit being wider than the outer diameter of each of said cylindrical shafts and said core member being disposed within said housing such that said cylindrical shafts lie flush against said core member to seal said secondary input sites;
*
an output passageway within said core member, accessible through an access hole in the circumference of said core member, said passageway extending through said core member and out through a projection from one of said planar surfaces of said core member; and
*
a drive member, for rotating said core member to selectively align the access hole of said output passageway with any of said secondary input sites or with said conduit to communicate fluid from one of said input sites or from said conduit into said output passageway.
11. The valve of claim 10 wherein said drive member comprises a gear.
12. The valve of claim 10 wherein said access hole is wide enough to prevent interruption of fluid flow into said output passageway when said core member is rotating said access hole between said conduit and one of said secondary input sites.
13. A method for administering multiple fluid solutions to a patient, said method comprising:
*
providing a sterile valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said multiple fluid solutions to different inputs of said valve;
*
connecting a catheter tube between the output of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined time intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said catheter tube.
14. A method for administering a plurality of fluid solutions to a patient, said method comprising;
*
providing a sterile valve including a cylindrical housing having a primary input and a plurality of secondary inputs, a core member, disposed within said housing, having an output passageway with an access hole through the circumference of said core member, the circumference sealing closed the secondary input when they are not aligned with the access hole of the output passageway, and a conduit, wherein said conduit directs fluid from said primary input around said secondary inputs so that said fluid from said primary input is in communication with said output passageway whenever said access hole is positioned between two adjacent secondary inputs;
*
individually connecting said plurality of fluid solutions to any of said secondary inputs;
*
connecting a neutral solution to said primary input;
*
connecting a catheter tube between the output passageway of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
rotating said core member to alternately switch the output passageway of said valve into communication with said primary input and with one of said secondary inputs at predetermined time intervals, said neutral solution being provided between each fluid solution to prevent any of said fluid solutions from substantially mixing with another fluid solution in said catheter tube.
15. The method of claim 14 wherein said switching is performed automatically by preprogrammed electronic processor means.
16. The method of claim 14 wherein said pump comprises a peristaltic pump.
17. The method of claim 14 wherein said pump comprises a syringe-type cartridge pump.
18. An apparatus for administering multiple drug infusions comprising:
*
(a) a demountable valve including:
*
a hollow cylindrical housing having a primary input site and a pluraltiy of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites; and
*
a drive member, connected to said core member, for rotating said core member to selectively align said access hole with any of said secondary input sites or with said conduit means to communicate fluid from said input site or from said conduit means into said output passageway;
*
(b) motor;
*
(c) drive means coupled to said motor engageable with said drive member; and
*
(d) microprocessor means for controlling said motor to selectively communicate fluids from said input sites through said output passageway for predetermined time intervals in a predetermined sequence.
19. The apparatus of claim 18 wherein said microprocessor means includes means for controlling said motor to communicate fluids through said output passageway in a sequence alternating between fluid from said conduit means and fluid from any of said secondary input sites.
20. The apparatus of claim 18 further comprising a catheter tube in communication with said output passageway and a pump coupled to said catheter tube for causing fluids to flow from said valve through said catheter tube at a predetermined rate.
21. The apparatus of claim 20 wherein said pump comprises a peristaltic pump.
22. The apparatus of claim 20 wherein said pump comprises a syringe-type cartridge pump.
23. The apparatus of claim 18 wherein said drive member in said valve comprises a gear.
24. The apparatus of claim 18 wherein communication of fluid through said access hole is not interrupted by rotation of said core member.
25. The apparatus of claim 18 further comprising means for causing an alarm prior to exhausting a source of fluid supplying one of said input sites. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A valve demountable on a control apparatus for automatically providing selective communication between one of a plurality of available fluid sources and a catheter tube, the valve comprising:
*
a hollow cylindrical housing having a plurality of input sites for connection with said fluid sources;
*
a core member, rotatably engaged within said housing, having a planar surface on each end and an output passageway extending through said core member from an access hole in a circumference of said core member to an output hole in one of said planar surfaces connected to said catheter tube, said circumference of said core member sealing said input sites such that fluid is prevented from escaping from said input sites except when said access hole is aligned with one of said input sites to provide communication between said input site and said output passageway;
*
conduit means for directing fluid from one of said input sites around said remaining input sites so that said fluid from said one of said input sites is in communication with said access hole whenever said access hole is positioned between two adjacent input sites; and
*
gear means coupled to said core member for transmitting rotational movement from said control apparatus to said core member. | Independent Claims:
1. A valve demountable on a control apparatus for automatically providing selective communication between one of a plurality of available fluid sources and a catheter tube, the valve comprising:
*
a hollow cylindrical housing having a plurality of input sites for connection with said fluid sources;
*
a core member, rotatably engaged within said housing, having a planar surface on each end and an output passageway extending through said core member from an access hole in a circumference of said core member to an output hole in one of said planar surfaces connected to said catheter tube, said circumference of said core member sealing said input sites such that fluid is prevented from escaping from said input sites except when said access hole is aligned with one of said input sites to provide communication between said input site and said output passageway;
*
conduit means for directing fluid from one of said input sites around said remaining input sites so that said fluid from said one of said input sites is in communication with said access hole whenever said access hole is positioned between two adjacent input sites; and
*
gear means coupled to said core member for transmitting rotational movement from said control apparatus to said core member.
3. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites.
10. A valve for providing selective communication between any one of a plurality of available fluids and an output tube, the valve comprising:
*
a hollow cylindrical housing having a primary input site and a plurality of secondary input sites, each of said secondary input sites having a hollow cylindrical shaft extending into said housing;
*
a cylindrical core member rotatable within said housing having flange means extending radially from its circumference and a planar surface on each end, said flange means, said housing and the circumference of said core member forming a conduit in communication with said primary input site, said conduit being wider than the outer diameter of each of said cylindrical shafts and said core member being disposed within said housing such that said cylindrical shafts lie flush against said core member to seal said secondary input sites;
*
an output passageway within said core member, accessible through an access hole in the circumference of said core member, said passageway extending through said core member and out through a projection from one of said planar surfaces of said core member; and
*
a drive member, for rotating said core member to selectively align the access hole of said output passageway with any of said secondary input sites or with said conduit to communicate fluid from one of said input sites or from said conduit into said output passageway.
13. A method for administering multiple fluid solutions to a patient, said method comprising:
*
providing a sterile valve that provides continuous communication between an output and at least one of a plurality of inputs;
*
connecting a neutral solution to one input of said valve;
*
connecting each of said multiple fluid solutions to different inputs of said valve;
*
connecting a catheter tube between the output of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
using an electronic processor to alternately switch said valve between the input connected to said neutral solution and one of said other plurality of inputs at predetermined time intervals, said neutral solution being provided between said fluid solutions to prevent said fluid solutions from substantially mixing in said catheter tube.
14. A method for administering a plurality of fluid solutions to a patient, said method comprising;
*
providing a sterile valve including a cylindrical housing having a primary input and a plurality of secondary inputs, a core member, disposed within said housing, having an output passageway with an access hole through the circumference of said core member, the circumference sealing closed the secondary input when they are not aligned with the access hole of the output passageway, and a conduit, wherein said conduit directs fluid from said primary input around said secondary inputs so that said fluid from said primary input is in communication with said output passageway whenever said access hole is positioned between two adjacent secondary inputs;
*
individually connecting said plurality of fluid solutions to any of said secondary inputs;
*
connecting a neutral solution to said primary input;
*
connecting a catheter tube between the output passageway of said valve and said patient;
*
coupling a pump to said catheter tube;
*
operating said pump at a predetermined speed;
*
rotating said core member to alternately switch the output passageway of said valve into communication with said primary input and with one of said secondary inputs at predetermined time intervals, said neutral solution being provided between each fluid solution to prevent any of said fluid solutions from substantially mixing with another fluid solution in said catheter tube.
18. An apparatus for administering multiple drug infusions comprising:
*
(a) a demountable valve including:
*
a hollow cylindrical housing having a primary input site and a pluraltiy of secondary input sites;
*
a core member, disposed within said housing, having an output passageway and a first means for sealing;
*
said first sealing means having an access hole in communication with said output passageway and being rotatably engaged with said housing to prevent any fluid from escaping from any of said secondary input sites except when said access hole is aligned with one of said secondary input sites to provide communication between said one of said secondary input sites and said output passageway;
*
conduit means for directing fluid from said primary input site around said secondary input sites so that said fluid from said primary input site is in communication with said access hole whenever said access hole is positioned between two adjacent secondary input sites; and
*
a drive member, connected to said core member, for rotating said core member to selectively align said access hole with any of said secondary input sites or with said conduit means to communicate fluid from said input site or from said conduit means into said output passageway;
*
(b) motor;
*
(c) drive means coupled to said motor engageable with said drive member; and
*
(d) microprocessor means for controlling said motor to selectively communicate fluids from said input sites through said output passageway for predetermined time intervals in a predetermined sequence. | Description:
BACKGROUND OF THE INVENTION
This invention relates to the administration of multiple fluid infusions.
There are many applications for which there is a need for a device which can intravenously administer a plurality of drugs. One such application is the use of chemotherapy to treat diseases such as cancer. Another application is hyperalimentation where several nutritional solutions are intravenously administered to a patient.
Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often if different drug solutions are used, they are administered by using a separate catheter tube for each drug. A separate infusion pump would be used on each individual catheter tube line and the tube would deliver the fluid solution into the patient through its respective intravascular access needle. A patient must pay for each catheter set and must rent a pump for use with each catheter tube. Therefore, it is costly to use multiple catheter tubes and pumps. A further problem would be the discomfort and complications involved in applying and maintaining several vascular access sites in a single patient.
Some physicians administer chemotherapy treatments with a plurality of drug solutions by mixing the solutions together and feeding the mixture into the patient through a single catheter set and pump. If the different drug solutions are compatible, they can be mixed and delivered through a single catheter. Unfortunately, there are only a limited number of drug combinations which can be used in this manner. Many drugs cannot be mixed together prior to infusion. Some drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient.
Because of these problems, it is desirable to keep the multiple fluid solutions separated. Attention is directed to the inventors' copending patent application entitled "Method for Sequential Intravenous Infusion of Multiple Fluids", which shares the same filing date and assignee as the present application. The method described in the copending application enables the use of a single catheter tube for multiple drug infusions. In order to deliver a plurality of fluid solutions separately through a single catheter tube, a valve is generally required. The valve must be sterile to perform this application; thus a disposable valve would be preferable. There are some known valves which may be manually adjusted. For example, a rotary mixing valve, invented by Santomieri, is described in U.S. Pat. No. 3, 618,637. However, this valve provides a primary fluid which is commingled with selected secondary fluid solutions and if the valve is rotated to switch between secondary inputs, fluid flow will be interrupted.
SUMMARY OF THE INVENTION
This invention is directed to a method and apparatus for administering multiple fluid infusions. The apparatus includes a valve for selectively communicating any one of a plurality of available fluid solutions with an output tube. The valve includes a hollow cylindrical housing having a primary input site and a plurality of secondary input sites. There is a core member engaged within the hollow cylindrical housing which has an output passageway for coupling the inputs with the output tube. Means are provided around the circumference of the core member for sealing off the input sites which are not in communication with the output passageway through an access hole in the circumference. The primary input site is connected via a conduit with the circumference of the core member so that the fluid provided through the primary input site is in communication with the output passageway whenever the access hole is aligned between two adjacent secondary input sites.
The method of the present invention for administering multiple fluid solutions to a patient begins by providing a sterile valve having a single output and a plurality of inputs. A neutral solution is connected through one input of the valve and the remainder of the inputs are connected to one of several fluid solutions. A catheter tube is connected between the output of the valve and the patient. A pump is coupled to the catheter tube for delivering fluid through the tube at a predetermined speed. The drug regimen is delivered by alternately switching the valve between the input providing the neutral solution and one of the other inputs connected to the drug solutions. The use of this method and valve advantageously avoids a substantial mixing of the drug solutions prior to injection into the patient. Thus, physicians will be given new flexibility in their choice of intravenous drug combinations for use in chemotherapy or other similar treatments.
The apparatus for performing the method of the present invention employs a valve with several input sites and a single output site through an output passageway in a rotary core member. A motor is provided for turning the rotary core member to select the connection between an input and the output passageway. A catheter tube is connected to the valve and a pump is coupled with the catheter tube for delivering fluid through the tube at a predetermined speed. A preprogrammed microprocessor is provided for controlling the motor to provide selected drug solutions to the catheter tube in a predetermined sequence for predetermined time intervals.
It is an object of the present invention to provide a sterile disposable valve for selectively communicating with one of several fluid solutions for input through a catheter tube. It is a further object of the present invention to provide an automatically controlled apparatus for selectively communicating a catheter tube with a selection of fluid solutions. An advantage of the automatic control of the present invention is that it may be programmed to handle any regimen as prescribed.
A still further object of the present invention is to provide a valve having a primary input that is accessible through a conduit between the input sites for the plurality of fluid solutions. This advantageously allows simple implementation of a drug regimen which alternates the provision of a neutral solution with a selected sequence of fluid solutions, since the valve does not need to switch repeatedly its output into alignment with the primary input site. The objective of this neutral solution is to substantially isolate the plurality of fluid solutions that are fed into the catheter tube.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an elevational view of an apparatus of the present invention for administering multiple fluid infusions.
FIG. 2 is a cross-sectional view of a valve of the present invention.
FIG. 3 is a sectional view taken along lines 3--3 of the valve in FIG. 2.
FIG. 4 is another elevational view of the apparatus of FIG. 1.
FIG. 5 is a sectional view of the apparatus of FIG. 4 taken along lines 5--5.
FIG. 6 is a sectional view of the catheter tube shown in FIG. 1 demonstrating the method of the present invention.
FIG. 7 is a cross-sectional view of the catheter tube shown in FIG. 1 after the neutral spacer solution has been pumped through a length of catheter tubing.
FIG. 8 is an elevational view of a peristaltic pump for use in the method and apparatus of the present invention.
FIG. 9 is an elevational view of a syringe-type cartridge pump for use in the method and apparatus of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Turning now to the drawings, FIG. 1 is a simplified elevational view of the apparatus of the present invention. A valve 10 is mounted on control apparatus 20. The valve 10 is shown receiving four inputs from intravenous fluid solution sources. The valve 10 includes rotary core member 12. The rotary core member 12 has an output passageway 14 which is connected to a catheter tube 30 for delivering fluid to a patient. A pump 40 is coupled to the catheter tube for delivering the fluid at a predetermined speed. The pump 40 which is used with the present invention may be any conventional type of infusion pump. The presently preferred embodiment uses a peristaltic pump which is especially well-suited for long duration infusions. The use of a syringe-type cartridge pump is allowable for situations where a higher pressure is required and where larger fluid volumes may be infused into the patient.
Control apparatus 20 has a control panel 22 by which an operator can program the control apparatus 20 to infuse predetermined amounts of each fluid solution into the patient through the catheter tube. An operator would indicate to the apparatus 20 the quantity of each fluid to be pumped per unit time through the catheter tube. The apparatus 20 then computes the required pump speed and displays this information to the operator. The operator sets the pump 40 at this speed. The programmed apparatus automatically switches the valve 10 between fluid solutions to administer the prescribed regimen.
One of the inputs into the valve 10 is a neutral solution which is used as an isolator between drug solutions thereby preventing any substantial premixing of the solutions in the catheter tube 30. The control apparatus 20 will always alternate between the neutral solution and one of the drug solutions. This is the method described in the inventors' copending patent application U.S. Ser. No. 619,846 entitled "Method for Sequential Intravenous Infusion of Multiple Fluids" sharing the same filing date and assignee as the present invention and the disclosure of which is hereby incorporated by reference herein. According to this method, the spacer solution 110 is provided for substantially isolating the different fluid solutions during intravenous administration. FIG. 6 shows a first solution 112 and a second solution 114 separated by the spacer solution 110. The solutions are carried by the catheter tube 30 through a needle and into a patient. Pump 40 keeps the fluids moving through catheter tube 30 at a predetermined rate. The spacer solution 110 must be a solution which is suitable for intravenous infusion into a patient. The spacer 110 must also be neutral with respect to each of the fluid solutions on either side of it. In other words, the spacer solution 110 must not substantially react with either the first fluid solution 112 or the second fluid solution 114 while it is traveling through the catheter tube 30 into the patient. Some solutions may react with one another over a long period of time, however, it is only necessary that there be no adverse reactions prior to the infusion.
There are a number of intravenous solutions which may be selected as the neutral spacer 110, including but not limited to saline solutions, dextrose solutions and intravenous lipid solutions. The appropriate spacer solution 110 should be selected according to a patient's needs. For example, a patient requiring nutritional supplement may receive a high concentration dextrose solution as the spacer, whereas a patient merely requiring liquids may receive a saline solution or a low concentration dextrose solution.
The volume of the spacer solution 110 affects the rate of mixing between the fluid solutions on adjoining sides of the spacer. A spacer with a low volume would have a tendency to allow the adjoining fluids to diffuse more quickly into each other. On the other hand, a spacer with a larger volume would decelerate the rate of diffusion of adjoining drug solutions into each other.
The volume of the spacer solution must be selected so as to avoid substantial mixing between the fluid solutions on either side of the spacer solution 110 in the time that the solutions are in transit within the catheter tube 30. If the diffusion rate between a fluid solution and the spacer solution 110 is rapid, the spacer solution 110 must have a greater volume to avoid mixing of the two isolated fluid solutions. Some insubstantial mixing may be allowed where the first drug solution 112 and the second drug solution 114 are relatively compatible with one another and will not react when in contact to a small extent. For more highly reactive fluid solutions, any amount of mixing would be substantial and must be prevented. Thus, the appropriate volume of spacer 110 depends on a variety of factors.
Because of laminar flow which occurs during the movement of fluids through the catheter tube 30, the type of pump being used will also be determinative of the minimum volume of spacer solution 110 required to separate the first and second fluid solutions. Referring now to FIG. 7, the affects of laminar flow of fluids as they travel through the catheter tube 30 is shown. There is friction between the walls of the catheter tube 30 and the fluids which are flowing through it. This friction slows the outer layers of fluid. Thus, the fastest flowing fluid is found along the center axis of the catheter tube 30. Over a period of travel through the tube the spacer solution 110 develops a convex pointed front side and a concave indented rear side. The volume of spacer solution 110 must be prescribed to be large enough so that the rear edge of the first fluid solution 112 does not substantially overlap the leading front point of fluid solution 114. A cross-section showing such an overlap is illustrated in FIG. 7 at cross-section 116. A peristaltic pump 130, illustrated in FIG. 8, operates by squeezing the catheter tube 30. If there is a cross-section 16 including the first and second fluid solutions as they reach the peristaltic pump 130, upon being squeezed by pump 130 the two solutions would be in direct contact as a result of the pump action. Therefore, it is important that when using a peristaltic pump 130 that there be a cross-section 117 maximally filled with spacer solution 110 as the spacer solution reaches the peristaltic pump 130.
A syringe-type cartridge pump 140, also known as volumetric pump, illustrated in FIG. 9 works in a different manner. The cartridge pump 140 operates by filling and emptying a chamber 42. A valve 44 rotates to switch between a filling and an emptying position. To prevent substantial mixing between fluid solution 112 and second fluid solution 114, it is again necessary to prescribe a sufficient volume of spacer solution 110 to substantially isolate the two fluid solutions. To accomplish this, the spacer solution 110 should encompass a volume which fills a cylindrical cross-section of the tube which is equal to or greater than the volume of the chamber 42. Thus, the pump chamber 42 will be prevented from substantially filling with more than one of the fluid solutions separated by the spacer 110.
It is highly important that the infused fluid solutions are not contaminated. Therefore, it is important that the valve 10 be sterile. The presently preferred embodiment employs a disposable plastic valve 10 which can withstand a conventional sterilization process.
The apparatus of the present invention individually connects a fluid solution through an input site 18 in the valve 10 with an output passageway 14 through the rotary core member 12 of the valve 10. The output passageway 14 is directly connected with the catheter tube 30. During the time interval in which the rotary core member 12 is turned to switch the connection from one solution to another, there is an instant in which both the input site 18 and the conduit 50 are exposed to the output passageway 14. Then there is an interval in which solely the neutral solution is pumped from conduit 50 through the catheter tube 30. Thus, the flow of fluid into the catheter tube 30 is continuous and is never interrupted. As the rotary core member 12 is turned to switch from conduit 50 to an input site 18, the flow of fluid into the catheter tube 30 is similarly continuous and never interrupted.
Referring now to FIGS. 2 and 3, the valve of the present invention may be described in greater detail. The valve 10 is supported in a hollow cylindrical housing 16. The housing 16 is mountable on the apparatus 20 by its mounting holes 15 and a lip 24. At the top of the valve 10, lip 24 extends outward so as to fit under ridge 25 which extends from control apparatus 20. Pins 23 projecting out of the control apparatus 20 snap into the mounting holes 15. Any conventional mounting means may be substituted for the mounting holes 15 and lip 24 as long as the valve 10 can be securely held in place and may be easily dismounted for replacement with a new sterile valve 10.
The housing 16 includes a plurality of input sites. In the preferred embodiment, there is one primary site 17 and a plurality of secondary sites 18. Each input site is a hole through the circumference of the hollow housing 16. The input site accommodates a hollow cylindrical shaft. In the case of the secondary input sites, the hollow cylindrical shafts 19 extend through the hollow housing 16 and into contact with sealing means surrounding the rotary core member 12. In the preferred embodiment, it is the circumference 13 of the rotary core member 12 which contacts and seals the cylindrical shafts 19. The ends of the shafts 19 are ground with a curve matching that of the circumference 13 of the rotary core member 12 so that the shafts lie flush against the circumference 13 to effectuate a seal. It would be possible however to provide a washer type device about the rotary core member to function as the sealing means.
The output passageway 14 extends through rotary core member 12 from an access hole 11 in the circumference 13. When the access hole 11 is not aligned with a secondary input site 18, that input site 18 will be sealed closed by the circumference 13. The primary input site 17 has a shaft 21 which does not extend to the sealing means on the rotary core member 12. Thus, access is always maintained between the primary input site 17 and a conduit 50 which surrounds the rotary core member 12. In the presently preferred embodiment, the conduit 50 is formed by the rotary core member 12 itself. The rotary core member 12 is spool-shaped to form the channel-like conduit 50 about its circumference. The conduit 50 is formed with circumference 13 as the floor and sidewalls extending from the planar surface ends of the core member 12. The conduit 50 is wider than the outer diameter of the hollow cylindrical shafts 19. Thus, as shown in FIG. 3, the conduit 50 extends around each of the secondary input sites. This enables the neutral solution which is fed through the primary input site 17 to fill the conduit 50 all the way around the rotary core member 12.
The conduit 50 simplifies the sequential switching operation of valve 10. Since treatments involve a plurality of drugs, it is desirable to avoid substantial mixing of the drugs in the catheter tube 30. To accomplish this, the neutral solution is accessed after each use of a drug solution. The conduit 50 provides access to the neutral solution between adjacent secondary input sites 18. Thus, the core member 12 can rotate directly from one solution to another and still access neutral solution in between. This construction also promotes protection against air bubbles in the line. The access hole 11 is made wider than the walls of the hollow shafts 19 so that fluid can be continuously pulled through the catheter tube 30. As the access hole 11 is moved out of direct alignment with a secondary input site 18, it will be instantaneously exposed to solution from the input site 18 and from the conduit 50. Then it will allow passage solely of the neutral solution from the conduit 50. Thus, there will be a continuous flow of fluid which will prevent air bubbles from ever forming within the system.
At the external end of each hollow cylindrical shaft 19, there is a male luer connector for mating with a female luer connector on the polymer catheter tube bringing fluid from the intravenous fluid solution source. Any conventional connecting means may be substituted for the present male-female luer connection.
The conduit 50 carrying the neutral solution must be sealed to prevent leakage. In the presently preferred embodiment, a double seal is provided by the rotary core member 12 against the hollow cylindrical housing 16. The outer planar surfaces of the rotary core member 12 frictionally engage an inner wall of a channel 26 within the inner circumference of the hollow cylindrical housing 16. The outermost circumference of the sidewalls of the rotary core member 12 frictionally engages the floor of the channel 26 in the hollow housing 16. The snug fit of the rotary core member within the hollow housing thus functions to seal the conduit 50.
The output passageway 14 is shown in FIGS. 2 and 3. It extends from the access hole 11 in the circumference 13 of the rotary core member 12 to an output site projecting from one of the planar surfaces of the core. A catheter tube 30 makes connection with the outer projection from the core 12 to provide a path for the fluid to follow. Automatic mechanical rotation of the valve 10 is made possible by the connection of a gear 60 to the rotary core member 12. The teeth of the gear 60 mesh with the teeth of a gear 80 within the control apparatus 20 so that a motor 70 within the control apparatus may control the operation of the valve 10. The engagement of the two gears further contributes to holding the valve 10 in its mounted position on the control apparatus 20.
Referring now to FIGS. 4 and 5, the mechanics of the control apparatus 20 may be explained. A stepping motor 70 rotates a pulley 72. The pulley 72 is connected by a belt 74 to a pulley 76 on a speed reducer 78. The belt 74 thus drives the speed reducer 78. The speed reducer 78 transmits torque from the motor 70 to a gear 80 which is enmeshed with the gear 60 on the valve 10. In the presently preferred embodiment, the speed reducer uses a ratio of 48 to 1. In reducing the speed, the speed reducer 78 effectively increases the torque which is applied to the gear 60 on the valve 10. The increased torque enables the rotary core member 12 to turn against the friction from the hollow housing. Any conventional means of speed reduction may be substituted for the present drive train.
The stepping motor 70 is controlled by a microprocessor located on a circuit board 90 at the rear of the control apparatus 20. Power for the microprocessor circuitry and the motor 70 is provided from a line cord 92 which is connected through a power supply 94. It is preferable to include a backup battery supply which would be automatically switched on should the power supplied over the line cord 92 be disrupted. The microprocessor circuitry also receives inputs from the control panel 22. The control panel 22 is used to program the microprocessor so that one control apparatus 20 may be used to operate the valve 10 for administering an unlimited variety of prescribed regimens.
The present invention makes possible the administration of advanced treatments using a plurality of drug solutions. The use of a greater variety of drug solutions is possible since the apparatus allows the use of a neutral solution as a spacer to prevent substantial mixing of the drug solutions in the catheter tube 30. The operation of the apparatus begins with mounting the valve 10 on the control apparatus 20. The fluid solutions are connected to the input sites 18 of the valve 10. A pump 40 is coupled to the catheter tube 30. The pump 40 is turned on and the catheter set is purged of air. The operator causes the valve 10 to turn through each input site position by pressing an appropriate button on the control panel 22. The controls and microprocessor means for implementing the controls may be provided by one skilled in the art. The operator leaves the valve 10 in each input site position until all air bubbles have been removed. The pump is then turned off.
The apparatus may now be initialized. The microprocessor memory is cleared. The volume of the neutral solution source is entered. The volume of the spacer size which is prescribed for use between the fluid solutions is entered. Then the volume of the other fluid solution sources and their prescribed rates of infusion are entered. The pumping rate or speed of pump 40 and the total volume of fluid to be infused per unit time are computed automatically and displayed to the operator on a display 26. The operator then instructs pump 40 to infuse at this speed and for this total volume. After the information has been fed into the microprocessor, thereby programming the apparatus to administer the prescribed regimen, the intravascular access needle on the catheter tube 30 is inserted into the patient and the pump 40 and control apparatus 20 are started.
The infusion process then proceeds automatically. The control apparatus 20 may be provided with an alarm that would sound after a calculated time period elapses which indicates that a solution is in need of refilling. A nurse would stop the pump and press a pause button on the control panel 22. The fluid source would be replaced or refilled. The line is purged if necessary. The new volume of fluid is entered into the control panel 22. Any necessary changes may be made to other variables entered into the apparatus. Then the pump 40 and control apparatus 20 may be restarted.
The present invention only requires a single pump and catheter tube to deliver all of the fluid solutions to the patient. The control panel can be programmed to set the amounts of fluid solutions to be provided to the patient, thereby satisfying a physician's particularly prescribed regimen. The valve of the invention is designed to effectively seal each of the drug solutions from one another so that no undesirable precipitates or reactions occur prior to the infusion. This invention thereby advantageously expands the number of drug solutions available to physicians for use in multiple drug infusion treatments. The neutral solution may be easily accessed between the input sites of the other fluid solutions to provide a spacer between the solutions in the catheter tube 30.
The valve assembly is made of a plastic that may be sterilized by a conventional method. It may be easily mounted and dismounted from the control apparatus so that it may be replaced by a new, sterile valve as needed. The disposability of the valve enhances the integrity of the sterility of the infusion system. The apparatus of the present invention has thus made possible a new and simplified method for administering a number of drug solutions to a patient through a single catheter tube attached to a single pump, without substantially mixing the drugs in the catheter tube.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. The valve of the present invention may be of use in a variety of applications. For example, the inputs may be attached to liquor bottles and the valve may be used to mix preprogrammed drinks, or the inputs may be attached to various chemical solutions to facilitate processing within a manufacturing environment. Furthermore, the number and position of the input sites in the hollow housing may be altered to simplify the molding process for producing the valve. These and other changes can be made without departing from the spirit and the scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Redondo Beach,CA,US | | Assignee/Applicant First: I Flow Corporation,Redondo Beach,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Redondo Beach,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Tai, Henry T. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Tai, Henry T. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | Tai Henry T.,Pacific Palisades,CA,US | | Inventor Count: 2 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Rosenbaum, C. Fred / Lester, Michelle N. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1986-08-05 | | Publication Month: 08 | | Publication Year: 1986 | | Application Number: US1984619847A | | Application Country: US | | Application Date: 1984-06-12 | | Application Month: 06 | | Application Year: 1984 | | Application with US Provisional: US1984619847A | 1984-06-12 | | Priority Number: US1984619847A | | Priority Country: US | | Priority Date: 1984-06-12 | | Priority Date - Earliest: 1984-06-12 | | Priority Month: 06 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
| A61M 5/16827
| -
| 20130101
| EP
|
Current
| -
| Y10T 137/86501
| 20150401
| EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604248, 13762511, 604081 | | US Class (divided): 604/248, 137/62511, 604/081 | | US Class - Main: 604248 | | US Class - Original: 604248 | 13762511 | 604081 | | ECLA: A61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Ivent Corp., ad from Medical Electronics and Equipment News, Aug. 1984, vol. 24, No. 4. | Hutchinson, Administration of Fat Emulsions, American Journal of Nursing, Feb., 1982. | | Count of Cited Refs - Non-patent: 2 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
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| | Count of Citing Patents: 88 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
1997-10-06
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
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1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1994-02-07
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1989-08-31
| FPAY
| +
|
| Description: FEE PAYMENT |
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1987-03-24
| CC
| -
|
| Description: CERTIFICATE OF CORRECTION |
| |
1985-10-10
| AS
| -
|
| Description: ASSIGNMENT TAI, HENRY T. ASSIGNS A FIFTY-ONE PERCENT INTEREST (51%).; ASSIGNOR:I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP; REEL/FRAME:004476/0670 1985-08-05 |
| |
1985-10-10
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP OF CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:004476/0668 1985-08-05 |
| |
1985-10-10
| AS
| -
|
| Description: ASSIGNMENT BROWN, ERIC W. ASSIGNS A FORTY-NINE PERCENT INTEREST (49%).; ASSIGNOR:I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP; REEL/FRAME:004476/0666 1985-08-05 |
| |
1985-10-10
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP OF CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:TAI, HENRY T.; REEL/FRAME:004476/0664 1985-08-05 |
| |
1984-06-12
| AS
| -
|
| Description: ASSIGNMENT I-FLOW BIOMEDICAL P.O. BOX 335, PACIFIC PALISADES, ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNORS:TAI, HENRY T.; BROWN, ERIC W.; REEL/FRAME:004272/0961 1984-06-07 |
| |
| | Post-Issuance (US): CORR-CERT Certificate of Correction 1987-03-24 1987 | | Maintenance Status (US): CC | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
TAI HENRY T.,MA,US
| I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP
| 1985-08-05
| 004476/0670
| 1985-10-10
|
| Conveyance: ASSIGNS A FIFTY-ONE PERCENT INTEREST (51%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW CORPORATION A CORP OF,CA,US
| BROWN, ERIC W.
| 1985-08-05
| 004476/0668
| 1985-10-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
BROWN ERIC W.,MA,US
| I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP
| 1985-08-05
| 004476/0666
| 1985-10-10
|
| Conveyance: ASSIGNS A FORTY-NINE PERCENT INTEREST (49%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW CORPORATION A CORP OF,CA,US
| TAI, HENRY T.
| 1985-08-05
| 004476/0664
| 1985-10-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW BIOMEDICAL P.O. BOX 335 PACIFIC PALISADES CA 90272 A PARTNERSHIP OF,CA,US
| TAI, HENRY T.
| 1984-06-07
| 004272/0961
| 1984-06-12
|
BROWN, ERIC W.
| 1984-06-07
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4604093A
| 19860805
| Brown Eric W.
| I FLOW CORP
|
| Title: APPARATUS AND METHOD FOR ADMINISTERING MULTIPLE FLUID INFUSIONS |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4604093A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4604093A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 11/43 | | EP1034734A1 | Method for improving patient compliance with a medical program | Verfahren zur Verbesserung der Befolgung eines medizinisches Programmes durch einen Patienten | Procédé servant à améliorer la conformité d'un patient à un programme médical | | Publication Number: EP1034734A1 | | Title: Method for improving patient compliance with a medical program | Verfahren zur Verbesserung der Befolgung eines medizinisches Programmes durch einen Patienten | Procédé servant à améliorer la conformité d'un patient à un programme médical | | Title (Original): Verfahren zur Verbesserung der Befolgung eines medizinisches Programmes durch einen Patienten | Method for improving patient compliance with a medical program | Procédé servant à améliorer la conformité d'un patient à un programme médical | Verfahren zur Verbesserung der Befolgung eines medizinisches Programmes durch einen Patienten | | Title (English): Method for improving patient compliance with a medical program | | Title (French): Procédé servant à améliorer la conformité d'un patient à un programme médical | | Title (German): Verfahren zur Verbesserung der Befolgung eines medizinisches Programmes durch einen Patienten | | Title (Spanish): | | Title - DWPI: Remote patient monitor has detectors on medication containers causing transmission of use signals and tracking by remote location | Abstract:
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications.
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. <IMAGE> | Abstract (English):
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | | Abstract (Spanish): | Claims:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means;
*
b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means;
*
c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim 1 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim 1 further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means;
*
b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state;
*
c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
*
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events;
*
b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule;
*
c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data;
*
d) producing a health status report in accordance with the non-redundant set of heath event data;
*
e) evaluating the health status report;
*
f) recording professional comments concerning the health status report as a video and audio presentation; and
*
g) adapting the recording and the health status report for electronic transmission on demand.
18. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a familiarity commentary, a clinical review of graphical records, a health parameter trend information, a behavioral parameter trend information, and a needed products available for purchase information.
19. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a positive behavioral reinforcement, an educational information, a purchasing information, at least one suggestion for improved patient behavior, and at least one of: clues, recommendations, acknowledgements and replies.
20. The method of claim 17 further comprising the step of producing a video screen comprising a first portion of the video screen depicting the health status report and a second portion of the video screen, adjacent to the first portion, depicting the professional comments recording.
21. The method of claim 17 wherein the comments recording comprises at least one of: behavior reinforcing comments, educational comments, and reassurance comments wherein the comments recording is directed for improving patient behavior.
22. The method of claim 17 wherein the comments recording comprises a summary of the health status report including medical significance and recommended changes in patient behavior and medications.
23. The method of claim 17 wherein the comments recording comprises at least one of: recommendations, suggestions, encouragements, demands, and clues for patient purchases.
24. The method of claim 17 further comprising the step of incorporating into the video screen, a plurality of action initiating button icons, and the further step of integrating the button icons with actions related to choices presented in the professional comments recording.
25. The method of claim 24 wherein at least one of the action initiating button icons is enabled for at least one of: a video presentation of medical products and supplies recommended for purchase and an initiating video screen for the purchase of the medical products and supplies recommended in the professional comments recording.
26. The method of claim 24 wherein at least one of the action initiating button icons is enabled for restarting the professional comments recording.
27. The method of claim 24 wherein at least one of the action initiating button icons is enabled for transmitting a message to a medical professional.
28. The method of claim 17 further comprising the step of incorporating into the video screen, a graphical representation of a medical device, and the further step of integrating the button icons with actions related to operation of the medical device.
29. The method of claim 17 further comprising the step of producing a video screen comprising a graphical listing of a plurality of commercial medical products related to the health status report and the professional comments and a graphical means for selecting any of said products on the screen.
30. The method of claim 29 wherein the video screen producing step further produces a graphical selection means for selecting a method of billing.
31. The method of claim 17 further comprising the additional step of notifying the patient that a video report is available for viewing. | | Claims Count: 31 | Claims (English):
1. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means;
*
b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means;
*
c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim 1 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim 1 further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means;
*
b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state;
*
c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
*
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events;
*
b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule;
*
c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data;
*
d) producing a health status report in accordance with the non-redundant set of heath event data;
*
e) evaluating the health status report;
*
f) recording professional comments concerning the health status report as a video and audio presentation; and
*
g) adapting the recording and the health status report for electronic transmission on demand.
18. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a familiarity commentary, a clinical review of graphical records, a health parameter trend information, a behavioral parameter trend information, and a needed products available for purchase information.
19. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a positive behavioral reinforcement, an educational information, a purchasing information, at least one suggestion for improved patient behavior, and at least one of: clues, recommendations, acknowledgements and replies.
20. The method of claim 17 further comprising the step of producing a video screen comprising a first portion of the video screen depicting the health status report and a second portion of the video screen, adjacent to the first portion, depicting the professional comments recording.
21. The method of claim 17 wherein the comments recording comprises at least one of: behavior reinforcing comments, educational comments, and reassurance comments wherein the comments recording is directed for improving patient behavior.
22. The method of claim 17 wherein the comments recording comprises a summary of the health status report including medical significance and recommended changes in patient behavior and medications.
23. The method of claim 17 wherein the comments recording comprises at least one of: recommendations, suggestions, encouragements, demands, and clues for patient purchases.
24. The method of claim 17 further comprising the step of incorporating into the video screen, a plurality of action initiating button icons, and the further step of integrating the button icons with actions related to choices presented in the professional comments recording.
25. The method of claim 24 wherein at least one of the action initiating button icons is enabled for at least one of: a video presentation of medical products and supplies recommended for purchase and an initiating video screen for the purchase of the medical products and supplies recommended in the professional comments recording.
26. The method of claim 24 wherein at least one of the action initiating button icons is enabled for restarting the professional comments recording.
27. The method of claim 24 wherein at least one of the action initiating button icons is enabled for transmitting a message to a medical professional.
28. The method of claim 17 further comprising the step of incorporating into the video screen, a graphical representation of a medical device, and the further step of integrating the button icons with actions related to operation of the medical device.
29. The method of claim 17 further comprising the step of producing a video screen comprising a graphical listing of a plurality of commercial medical products related to the health status report and the professional comments and a graphical means for selecting any of said products on the screen.
30. The method of claim 29 wherein the video screen producing step further produces a graphical selection means for selecting a method of billing.
31. The method of claim 17 further comprising the additional step of notifying the patient that a video report is available for viewing. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means;
*
b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means;
*
c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station. | Independent Claims:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means;
*
b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means;
*
c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
*
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means;
*
b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state;
*
c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter;
*
d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
*
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events;
*
b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule;
*
c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data;
*
d) producing a health status report in accordance with the non-redundant set of heath event data;
*
e) evaluating the health status report;
*
f) recording professional comments concerning the health status report as a video and audio presentation; and
*
g) adapting the recording and the health status report for electronic transmission on demand. | Description:
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION:
This invention relates generally to the monitoring and control of medical care data by non-medically trained individuals, and more particularly to an automated method of collecting and using patient care data for assuring a high level of healthcare vigilance with feedback to the patient and the patient's caregivers, and with provision for professional medical advice including the selection of offered medications and other medical supplies for sale..
DESCRIPTION OF RELATED ART:
The following art defines the present state of this field:
Kutzik et al, U.S. 5,692,215 describes a system that provides for monitoring a user in a user living area. The system includes a system controller and an activity detection subsystem. The activity detection subsystem monitors a daily living activity of the user and provides information representative of the daily living activity to the system controller. The system controller includes a control circuit which generates a control signal in response to the daily living activity information obtained by the activity detection subsystem. Control information from the system controller is applied by way of a control information communication channel both to the activity detection subsystem and to a remote monitoring site. The activity detection subsystem may be system for determining the movement of the user around the home, medication compliance by the user, problems with usage for stoves or other potentially dangerous appliances, and selected auxiliary appliances.
Lipscher, U.S. 4,082,084 describes a portable diagnostic device, particularly for medical field-examinations comprising a case-like housing in which replaceable electronic examining units are arranged serving for the examination of different physiological functions and/or conditions. The housing comprises an electronic power supply feeding each of the electronic examining units, a common display receiving the output signals of the examining units and electrical connectors providing electrical connections between the housing and each of the examining units. The inner room of the housing is divided into two separate parts, the first of which is arranged in a modular system and accommodates slide-in examining units, while the second part serves to accommodate the accessory means required for the examinations.
Fu, U.S.4,803,625 provides for a personal health monitor which includes sensors for measuring patient weight, temperature, blood pressure, and ECG waveform. The monitor is coupled to a central unit via modems and includes a computer which is programmed to prompt a patient to take prescribed medication at prescribed times, to use the sensor to measure prescribed health parameters, and to supply answers to selected questions. Medication compliance information, test results, and patient answers are compiled in a composite log which is automatically transmitted to the central unit. The computer is also programmed automatically to disconnect the monitor from an alternating current power source and to rely on internal battery power during certain periods of patient monitor interaction, such as during use of the ECG module. In this way, danger to the patient and complexity of the ECG module are minimized. The computer is also programmed to compare measured test information with predetermined expected values, and in the event of a discrepancy, to collect additional information from the patient to assist trained personnel at the central unit in interpreting the composite log. The computer is also programmed to alert the central unit promptly in the event one or more measured parameters falls outside of a prescribed normal range. The normal range for a given parameter is made to vary in accordance with the measured value of one or more other parameters in order to reduce the incidence of false alarms.
Bornn et al., U.S. 4,827,943 provides a link between the caregiver and the subject being monitored which utilizes an intermediate base station with redundant signal paths between the base station and the caregiver. The caregiver wears a unit which receives signals from the base station. Signals from the base station provide information about the subject being monitored and provides signals for use in determining whether the caregiver remains within the range of the base station. The unit worn by the subject being monitored can include diagnostic circuitry for evaluating signals received from sensors to transmit an alarm signal to the base stations when the subject being monitored is in need of assistance. A range monitoring system is provided which alerts the subject being monitored as well as the caregiver whenever the subject being monitored moves outside the range of the base station.
Kaufman, U.S. 4,933,873 describes an interactive patient assistance device which houses both pre-selected doses of medication and a physical testing device. Both medication and the testing device are normally retained within separate compartments within the device away from access by the patient. The device keeps track of medication and diagnostic testing schedules. The device is also capable of receiving and interpreting verbal commands of the patient. The device makes a pre-selected dose of medication available to the patient in response to either the medication schedule or the receipt of a verbal command by the patient. Likewise, the testing device is made available to the patient in response either to the testing schedule or the receipt of a verbal command from the patient.
Treatch, U.S. 5,007,429 describes a user interface for directing the programming of operating parameters for patient blood pressure testing into and downloading blood pressure data from ambulatory patient blood pressure monitoring units. The user interface operates on a system comprising a plurality of microprocessor based, ambulatory blood pressure measuring patient units, an office control unit, and a data processing center, typically accessed over telephone lines. An office control unit is used to program patient units with test regimens for specific patients. The control units are also used to download data from the patient units and to transfer the data, along with patient identifying data, to the central data processing facility. The office control unit includes local memory which stores various interface routines, a microprocessor for executing the routines, a 12-character keypad allowing input of integers and a display for displaying prompts to the user. Upon initial power up of the control unit, and operator using the control unit is prompted through a start up sequence and a menu selection sequence to carry out the desired functions of the system. All selections are made, and all operating parameters are entered, through a telephone like keypad. The display indicates to the user which parameter entry of which is called for and which menu items are available for selection. During transfer of data to the central processing facility, additional prompts may be given to the operator by voice over the telephone handset.
Blomquist, U.S. 5,338,157 describes an invention relating to systems and methods for communicating with ambulatory medical devices, such as drug delivery devices, both locally and remotely. In one embodiment, a caregiver drug pump communicates with a remote patient drug pump for data gathering, trouble shooting, and operational program changes. The caregiver drug pump is at least substantially identical in configuration to the patient drug pump. The caregiver drub pump transmits caregiver key input signals to the remote patient drug pump. The patient drug pump receives the key input signals, accesses a desired program, and transmits information for display on the display of the caregiver drug pump. In another embodiment, a computer is provided for communicating locally and/or remotely with a drug pump. The computer may include a display with an image of a pump. The computer may be operated through the use of a mouse or touch screen with respect to the image of the pump, to simulate use of the pump while using the personal computer. The computer may also be used as a training aid for training a caregiver and/or patient how to use the drug pump.
Maestre, U.S. 5,347,453 describes a portable programmable medication device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the time occurrence of each programmed administration time, and audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
Stutman, U.S. 5,416,695 describes a medical alert system which enables an authorized user, such as a doctor, to remotely set selection and limit parameters pertaining to specific medical and geodetic information of an ambulatory patient and thereater received updates of that information over a wireless communication network when the parameters have been met. A telemetry device attached to the patient provides an inbound stream of medical and geodetic information to a host computer, which is configured to exact selected portions of that information in response to the parameters provided by a remote processing device via a communications network. Upon completion of the latter process, the host computer transfers the extracted information to the remote processing device over the network, thereby informing the doctor of a medical situation.
Maestre, U.S. 5,495,961 describes a portable programmable medication alarm device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the timed occurrence of each programmed administration time, an audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route, and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
Vasko, U.S. 5,573,506 describes a remotely programmable infusion pump with interactive voice response via touch-tone phone (i.e., voice mail system in IV pump). The remotely programmable infusion system also comprises a voice storage unit for storing the voice signal. The remotely programmable infusion system further comprises a processor, coupled to the remote communication port, to the voice storage unit, and to the memory, for accessing the voice signal from the voice storage unit and the programmable protocol from the memory, and for processing the programmable protocol in response to receiving the remote programming signal.
Kurtenbach, U.S. 5,582,323 describes a medication dispensing and monitoring system of a present invention includes a housing containing a plurality of pill dispensing compartments for dispensing medication to a patient at a desired time. The invention is programmed to dispense medication at the desired time and activates alarms if the proper procedure is not completed. The invention also contacts the emergency personnel through phone lines and initiates two-way hands free communication between the patient and emergency personnel.
The invention further includes a pendent transmitter worn by the patient to contact emergency personnel.
Hultman, U.S. 5,582,593 describes an ambulatory medication delivery system which includes an ambulatory pump unit having a computer control linear motor pump for pumping predetermined volumes of fluid in accordance with a programmed delivery schedule which may be altered through communication with a remote monitoring location via a telephone data access line or via radio frequency communication. A clinician communication unit and a patient communication unit receive and send information to the ambulatory pump unit and also communicate via a telephone data modem access to the computer at a remote monitoring location at which trained health personnel can monitor a number of patient locations and alter or change medication delivery profiles as required.
Tacklind, U.S. 5,704,366 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
Ridgeway, U.S. 5,710,551 describes a system for the remote monitoring of in-home self-medication to assure compliance with prescribed dosage schedules. The system comprises at least one subscriber home medication station which interfaces with a communications link and a remote central monitoring station also interfaced with the link and operative to receive and analyze messages transmitted by the home medication station. The preferred home medication station embodiment transmits messages to the central station over the communications link each time the home medication station is accessed for a dosage of medication. Central station computer means verify receipt of such signals within each subscriber's uniquely scheduled dosage time windows, and alert an operator to take appropriate action if a dosage schedule error is detected. Alternative home medication station embodiments utilize a built-in programmable timer module to verify accessing of medication within a subscriber's uniquely scheduled dosage time windows, and to initiate transmission of alarm signals to the central station over the communications link if dosage schedule errors are detected by the timer module. All embodiments provide subscribers with help-button means to initiate transmission of alarm messages to the central station over the communications link in event of adverse reaction to medication, or other emergencies. Since the central station will be alerted if any scheduled dosage is missed, no emergency rendering a subscriber unable to press a help-button or call for help can go undetected longer than the maximum time between consecutively scheduled dosages.
Tacklind, U.S. 5,752,709 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
Stoop, U.S. 5,767,791 describes a two-way telemetry system which displays and monitors physiologic and other patient data of multiple, remotely located patients at a central location. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and a central station which receives, displays, and monitors the patient data received from the remote telemeter. The telemeters communicate with the central station using a two-way TDMA protocol which permits the time sharing of timeslots, and which uses a contention slot to permit telemeters to transmit service requests to the central station. Two-way special diversity is provided using only one antenna and one transceiver on each remote telemeter. The remote telemeters include circuitry for turning off the active transceiver components thereof when not in use (to conserve battery power), and include circuitry for performing a rapid, low-power frequency lock cycle upon power-up.
The system has multiple modes of operation, including a frequency hopping (spread spectrum) mode and a fixed frequency mode, both of which preferably make use of the 902-928 MHz ISM band. Patient locators are provided to allow the clinician to track the location of each patient.
Russo, U.S. 5,807,336 describes a medical apparatus that is provided with a programmable medical device disposed at a first room location and a remote monitor and/or controller disposed at a second room location. The programmable medical device is used to administer a medical treatment to a patient, and the remote monitor/controller may be used to monitor the operation of the medical device, control the operation of the medical device, and/or transfer data from the medical device to the remote monitor/controller. The apparatus may allow voice communication between the remote monitor/controller and the patient who is receiving treatment via the medical device while the medical device is being monitored and/or controlled from the remote location. The remote monitor/controller may also include means for determining the type of medical device to which it is connected.
Brudny et al., U.S. 5,810,747 describes an interactive intervention training system used for monitoring a patient suffering from neurological disorders of movement or a subject seeking to improve skill performance and assisting their training. A patient (or trainee) station is used in interactive training. The patient (or trainee) station includes a computer. A supervisor station is used by, for example, a medical or other professional. The patient (or trainee) station and the supervisor station can communicate with each other, for example, over the Internet or over LAN. The patient (or trainee) station may be located remotely or locally with respect to the supervisor station. Sensors collect physiologic information and physical information from the patient or subject while the patient or subject is undergoing training. This information is provided to the supervisor station. It may be summarized and displayed to the patient/subject and/or the supervisor. The patient/subject and the supervisor can communicate with each other, for example, via video, in real time. An expert system and neural network determine a goal to be achieved during training. There may be more than one patient (or trainee) station, thus allowing the supervisor to supervise a number of patients/subjects concurrently.
The prior art teaches the use of electronic measuring and monitoring of patients. However, the prior art does not teach that an automated medication and monitoring system with feedback can be used with such a method that data completeness and accuracy is assured through a novel signal repetition protocol. Also, the prior art does not teach that reporting of health results to the patient may be done in an interactive manner coupled with professional medical advisers helping, through a novel remote communication protocol, to direct optimum patient behavior, including offering of medical supplies and medications associated with an ongoing management program. The present invention fulfills these needs and provides further related advantages as described in the following summary.
SUMMARY OF THE INVENTION
The present invention teaches certain benefits in data handling methods which give rise to the objectives described below.
The present invention provides a home care medical data logging, communication, and reporting method that has not been described in the prior art.
A primary objective of the present invention is to provide such an method having advantages not taught by the prior art and which are capable of accurate medical data recording especially for a non-compliant patient.
Another objective is to provide such a method capable of assuring the transmission of accurate medical data although a patient is not within data transmission range of a data receiving station for significant periods of time.
Yet another objective is to provide such a method having means of correlating and reporting health and behavioral status on an interactive basis so as to improve compliance by a reluctant patient.
A further objective is to provide such a method enabled for offering and motivating a patient to purchase supplies and medications in accordance with a medical care program.
Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWING
The accompanying drawings illustrate the present invention. In such drawing:
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FIGURE 1 is a schematic block diagram showing the relationship between major elements of the invention;
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FIGURE 2 is a schematic block diagram of a typical dispensing device thereof;
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FIGURE 3 is a typical printed report of the invention illustrating medication dosing compliance correlated to patient status;
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FIGURE 4 is a typical monitor screen display report of the invention illustrating dosing compliance correlated to patient status;
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FIGURE 5 is a typical monitor screen display report of the invention illustrating oral medication compliance;
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FIGURE 6 is a typical monitor screen display report of the invention illustrating daily sugar level variation for a diabetes patient and showing the measurement device therefor;
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FIGURE 7 is a typical monitor screen display of the invention for inputting patient care orders for, in the present case, medication instructions; and
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FIGURE 8 is a typical monitor screen display of the invention illustrating a method of delivering health or behavior information with a nurse, clinician or other helper providing audio and video transmission of explanations, information, feedback, suggestions, instruction on ordering medication refills and supplies, behavior modification and control and other invention pertinent communications.
DETAILED DESCRIPTION OF THE INVENTION
The above described drawing figures illustrate the invention, a system including apparatus and method, for improving patient compliance with a medical program. The medical program may include medication dispensing elements as well as medical state sensing elements or both. The invention is used to monitor and modify medical care and especially patient behavior patterns associated with medication dispensing, medical state sensing and patient behavior with respect to acquisition and maintenance of medical treatment related supplies, wherein the apparatus comprises: a portable medical device means 10 providing, in one embodiment, a medication storing means such as a pill bottle, a medication accessing means such as the cap to the pill bottle, a dispensed medication counting means such as an electronic flip-flop counting circuit 40 with a simple numerical indexer, preferably powered by a battery Bl, in communication with the pill bottle cap by any electromechanical, magnetic or other physical element known to one of skill in the art and represented by letter "M" in Figure 2, such that when the cap is removed from the pill bottle, a switch S1 is made such that the circuit counting means indexes to a next higher numerical value, and a medical device wave energy communicating means such as a radio transceiver 50 is activated. The portable medical device means 10 may include a single dispensing and counting unit or multiple units, and further may include a single counting unit for multiple dispensed items, or multiple counting units (for redundancy) for a single dispensed item; the dispensed medication counting means being enabled for sequencing the counting circuit 40 each time the medication accessing means is manipulated, for gaining access to the medication storing means, the device means 10 being further enabled by a logic circuit 60 for establishing a data set comprising, for example, the current numerical value of the counting circuit 40 and a corresponding time and date of the sequencing of the counting circuit 40 as through the use of a clock circuit 70, the wave energy communicating means 50 being enabled by a control program in the logic circuit 60, for example, for repetitively transmitting, as for example, every 30 minutes, a wave energy signal corresponding to each newly established data set during a selected period of transmission time, as for example 72 hours, the transmission time period being chosen to assure a selected probability of the receipt of said wave energy signal by a base station 20 which is remotely located with respect to the medical device means 10 but which is within practical wave energy receiving range frequently. Because the transmission range of the transceiver is limited by FCC rules, it is conceivable, and quite common for the portable medical device means 10 to be carried by the patient to a location that is not within the range of the base station 20. This would happen on a regular basis if, for instance, the patient was in the habit of taking a walk in the park between 2 PM and 4 PM each day and carries his pill bottle so as to be able to take his 3 PM pills. This dosage would be counted when the pill bottle cap is removed, but could not be received immediately at the base station 20 since the pill bottle would be out of range at that time.
In another embodiment the invention comprises: the portable medical device means 10 providing a medical state sensing means and the medical device wave energy communicating means 50 of the first embodiment; the medical state sensing means is enabled for sensing a medical state variable, such as body temperature, body weight, blood pressure level, or blood glucose level each time the sensing means, i.e., thermometer, weight scale, sphygmomanometer or blood glucose measurement system, respectively, is manipulated in accordance with any well known medical state variable manipulation protocol, i.e., common to any medical examination office or clinic, and further enabled, by a simple mechanical arrangement "M" such as the use of a sensor for sequencing the electronic counter 40, as described above, each time the sensing means is manipulated and for establishing a data set comprising a value of the measured medical state, a numerical value of the counter 40 and a corresponding time and date of the measurement from the clock circuit 70, the wave energy communicating means 50 being enabled, as above, for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period, again, being chosen to assure a selected probability of the receipt of said wave energy signal by the base station 20 as previously described.
In either embodiment, the invention further preferably comprises a human responsive signaling means, such as an audible alarm or a vibration generating device (not shown), enabled in accordance with the patient's medication and state measurement schedule, referred to below as the "medical schedule," to alert the patient when medication dosing or medical state sensing is required. Such audible and vibration alarms, i.e., attention demanding techniques, are well known in the personal pager industry.
Preferably, the base station 20 comprises a base station wave energy communicating means, such as a radio transceiver 50 similar or identical to that of the medical device means 10, and is preferably physically located in the patient's home for example, for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means 50 and also for transmitting the medical schedule to the medical device means 10, the base station 20 further providing a primary, two-way communicating means 90 shown in Figure 1, such as a telephony or other communication means, enabled by logic circuits and software programming, as is well known in systems engineering, for automatically transmitting the data set values of the medical device means 10, as received via the wave energy signal, in accordance with a selected communicating schedule. That is to say, the information received at the base station 20 from one or more of the portable medical device means 10 is transmitted via the two-way communicating means 90 to a remote monitoring station 30, the remote monitoring station 30 further comprising a computation means, such as a general purpose computer, for computing summary information of interest to medical professionals and caregivers and the patient him/herself, such as a correlation analysis between the received data set values and a selected medical state parameter that is being monitored, the remote monitoring station 30 comprising further enablement, by modem or other means, for transmitting information of interest to the primary, two-way communicating means via the secondary, two-way communicating means 90 and for transmitting the selected medical schedule, usually a schedule defined by a primary medical care giver such as the patient's medical doctor. Preferably the base station 20 receives a unique identification code "PB187" representing "pill bottle 187" or "BPM456" representing blood pressure monitor 456," and "1030A-120198" representing a time-date stamp corresponding to, 10:30 AM on Dec. 1, 1998, and, in the case of a medical state measurement, additionally a measured value code such as "125/80" representing blood pressure levels at the time and date of the measurement. Such a transmission would therefore be coded as "BPM456. 1030A-120198.125/80" and may be transmitted in binary coded decimal form or converted to digital form prior to transmission. Other transmissions from the various medical device means 10 may include a low battery status, out of medication, or other supply, "active," "standby," or "inoperative" status, etc. along with the time/date identification. The software protocol used in the medical device means 10 or in the base station 20, or both, is preferably configured for identification of an emergency state, as when blood pressure or glucose level are at a dangerous level. In this case the medical device means 10 will immediately set an audible or other alarm to request a repeat of the measurement by the patient or his caregiver. In the following, and clearly throughout this description and the claims that follow, the use of "patient" should be recognized as including the actual patient, or his immediate caregiver such as a family member or a care provider such as a practical nurse or a medical worker. It is intended that preferably the patient will be active with respect to the present invention, at least in part, but if the patient is not active, a caregiver acts for the patient and as such, the caregiver must be at least frequently in close proximity to the actual patient.
The base station 20 is configured to immediately send an alarm message to the remote monitoring station 30 for immediate authoritative supervision and decision making, etc. The means for accomplishing these results, i.e., enablement, is most efficaciously completed through software logic programs controlled by microprocessor means within the medical device means 10 and the base station 20 means. Such enablement is considered to be within the ability of those of average skill in the art, and are therefore not defined here in further detail.
Clearly, the portable medical device means 10 may be any one or more of the well known dispensing devices in use in pharmacy and medicine such as an inhalant dispenser, an intravenous dispensing system, an oral or anal medication dispenser, a topical formulation dispenser, etc., for dispensing a selected dosage of a medicinal inhalant, intravenous medication, medicaments formulated as pills, capsules, caplets or other forms of solid medications or liquid or other forms of internal medications, as well as topical formulations. In each case the medication accessing means, such as a bottle cap, a dispensing tube winder, an inhalant pump, or a IV flow meter, is adapted by any simple well known sensing arrangement to trigger the counting means while simultaneously dispensing a previously selected dosage of the medication. Alternately, the dispensed amount may be controlled by the patient or the on-site caregiver.
In the preferred embodiment the medical device wave energy communicating means 50 of the medical device means 10 is adapted for accomplishing certain inventive methods, through any common or well known data manipulation process for receiving and implementing the medical schedule as transmitted from the base station 20, a simple matter of data transmission and receival. In this manner, the medication or state sensing schedule is remotely set-up within a memory device or circuit 80 of the medical device means 10, and may also be changed at any time. Also, the remote monitoring station 30 is adapted by these methods, i.e., simple tracking protocols, for composing a refill request message, at appropriate times when its calculations show that supplies are low, and for transmitting the refill request message to the base station 20 to alert the patient by, for instance, illuminating a lamp or presenting a written message on an LCD, or similar display on the base station, and, or on the medical device means 10.
Preferably, the methods of the present invention are adapted for composing graphical summary reports showing, for instance, when each medication was, in fact, taken and when each medical measurement was, in fact, completed. Such a history of events may be for a week, month or longer so as to enable the patient to see trends. The portable medical device means 10 of the invention is enabled, by memory device 80, for storing a list of all said data sets established over the selected period of transmission time, e.g., 72 hours, the list being transmitted repetitively at a selected frequency of transmission, e. g., every 30 minutes, so as to improve, through transmission redundancy, the probability of receipt, by the base station 20, of all data sets established by the medical device means 10. In the preferred embodiment, each of the data sets is paired with a check-sum and with a CRC, the base station 20 providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction. These error checking protocols are well known, but have not been previously used in the field of the present application, and are certainly critically important in the present use.
In use, the patient notifies the remote monitoring center as to the master medical schedule for medications and/or medical state measurements required. This may be accomplished by telephone, fax, written communication, or internet screen, the latter being illustrated in Figure 7. A database is established at the remote monitoring center for the patient. The master medical schedule information is downloaded to the base station 20 through the primary and the secondary communicating means, generally via telephony. The base station 20 then transmits an appropriate portion of the master medical schedule to each of the medical device means 10 which will be used by the patient. Each of the medical device means 10 then alerts the patient when a medication or a measurement should be taken. The medical device means 10 continues to remind the patient that such event is required until it is accomplished. The fulfillment of each event is recorded as described above and entered into the event list. The entire list is transmitted to the base station 20, as defined above, every selected period, such as every 30 minutes over a time duration of 72 hours for example or other selected duration. Each time the list is received by the base station 20 it is compared with the resident list at the base station 20 and any blanks in the resident list are filled-in from the newly received list. The duplicate entries are then discarded so that the resultant list is complete and non-redundant.
The invention further provides a reporting function which is illustrated in Figures 3-6 and 8. Figure 3 illustrates a correlation report which may be used to highlight the importance of behavioral compliance with a medication schedule for maintenance of a health parameter, such as blood pressure level or blood glucose level. Individual data reports are well-known in the medical industry, but graphical reports of patient behavior versus one or more health statistics, as defined by a chart, such as a bar chart, is novel and considered distinct from the prior art.
Once the reports are generated by the remote monitoring station 30, they are delivered to the patient, to enable action to be taken. Delivery modalities include hardcopy paper reports sent by mail delivery, faxed copies, or internet web-page delivery. The internet web-page delivery is preferred because it economically allows the use of color graphics. Color might be used in Figures 4 and 5, for example, to highlight deviations from the scheduled dosage time such that missed dosages or delayed dosages are shown in red and on-time dosages are shown in green. Highlighting good and bad behavior patterns to the patient is functional for establishing improved behavior.
Figure 4 illustrates the use of reports similar to Figure 3, but in a web-page format. Often patients become confused when they must use many different of the medical devices means. Figure 6 illustrates how information can be more readily associated with a specific device to enhance patient recognition and understanding, i.e., the inclusion of a picture of the device the patient is using. Figure 6 also shows controls (screen buttons) whereby the patient or local caregiver may send commands pertaining to device settings directly to the remote monitoring station 30. The remote monitoring station 30, in turn, is enabled for relaying these control messages to the base station 20 located in the patient's residence. In this manner, the web-page format is used to provide the patient with information and can also be used by a clinician at a remote location to control a patient's instruments, for example, based upon the health data statistics that are compiled.
Figure 7 illustrates how the web-page format can be entirely dedicated to the setup and control of a medical device means 10, such as a medication dispenser. In Figure 7, a clinician at the remote monitoring center or at any remote location can enter dosing related information and instructions and the medical schedule for that medication dispenser.
Figure 8 illustrates an advance in the reporting of medical information to patients. The advance includes the correlation of two or more behavior and/or health data graphics which are constructed from actual measurements of the patient's compliance or health statistics. Further, the report includes a human image and related spoken message which is preferably a video message but may be live. This human image is preferably a clinician, such as a nurse, but may also be a doctor or other primary caregiver. As stated, the message may be delivered in real-time, but is preferably delivered in a stored format, such as by e-mail or a stored streaming video, so that the patient may view it or replay it more than once, at his or her convenience. Such replay is facilitated by a dedicated replay button as shown in the figure. The video message report may include elements of encouragement, education, information, reinforcement, or reprimand, as may be needed to modify the behavior of the patient to comply with instructions. Such elements may further include a list of items which the patient may need or want to purchase or otherwise obtain, such as medication refills, information flyers, insurance information, and miscellaneous items such as flowers, greeting cards, etc. for improving the patient's morale.
The reports are preferably interactive so as to enable the patient to easily reply to questions or ask questions via a dedicated contact button. Such a button will, in one embodiment, activate an e-mail reply screen, as is well-known, that may generate text, voice or video image formats for composing a reply message. Further, the report includes purchasing reminders, clues or requests made by the clinician image, such as to remind the patient to purchase refills on medication or medical device supplies, such as blood glucose monitoring test strips, to order home supplies such as flowers, books, videos, music recordings, or other household goods, or to order new equipment such as an additional pill bottle for a new medication. Even further, the report allows the patient to respond to such reminders, clues or requests via a "place order" button, as illustrated. The place order button, depending upon the type of account established with the remote monitoring center, and may immediately fulfill the order suggested by the video image or it may lead to order selection and confirmation screens, as is well-known in the art. The interactive report may further include an invitation to reply to any questions posed by the clinician image, or to pose new questions to the clinician image, or to respond to previous questions posed by the patient to the clinician image. Additionally, the clinician image may suggest that the patient replay the video message to reinforce an understanding of its contents. The use of interactive reports as defined herein is considered novel in the present field, so as to distinguish over the prior art.
The following charts define: the preferred manner in which the video reports (screens) are created, preferred screen content, how the screens are used and preferred follow-up action. Please note the use of B-S representing "base station 20" and M-C representing "remote monitoring station 30."
From the diagrams above it is seen that the present invention provides for a method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
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a) automatic logging of health event data from dispensing devices and/or medical state measurement devices, into a storage means at the time of such events as enabled by actions of a patient or a patient with the help of a caregiver usually in the patient's home;
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b) automatic transmitting of the health event data to a local base station for storage therein, the base station being generally in the patient's home;
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c) automatic transmitting of the health event data on a predetermined schedule to a remote monitoring center for storage therein, the center being located outside the patient's home and usually in a distant location, possibly near a hospital or doctor's office;
*
d) automatic merging of each new transmission of the event data with an existing record of all previously recorded event data from the same base station;
*
e) deleting duplicate entries of the event data;
*
f) retrieving the event data as an event data report comprising charts, graphs, etc.;
*
g) medical personnel evaluating of the event data report;
*
h) medical personnel recording of comments concerning the event data report, the comments comprising familiar commentary, clinical review of graphical records, health parameter trend information, behavioral parameter trend information, positive behavioral reinforcement, educational information, purchasing information, suggestions, clues and recommendations, acknowledgements and replies, and recommendations;
*
i) transmitting or sending the recorded comments of step (h) to storage for saving in multimedia format; and
*
j) sending the recorded comments of step (i) to the caregiver upon his/her demand.
*
k) caregiver viewing of the recorded comment and lists of alternative supplies and refills;
*
1) caregiver placing orders for suggested supplies and refills of medications; and
*
m) caregiver sending an electronic message to a medical personnel.
Clearly, the above method is facilitated by wireless communication, land line wire based communication and networked communication methods of well known types such as radio, telephone and Internet links, hook-ups, and other enablements.
As an example of the type of prerecorded information presented in a medical consultation style the following is presented. This video report would, in the present context, be viewed by a home caregiver, but might also be viewed by the patient him/herself or by both the caregiver and the patient. Referring to Figure 8, the video message for this patient record may be conducted as follows:
"Hello Bob, this is Nurse Brown from Remote Medical. Please wish your mother a happy birthday for me. I see that she is going to turn 80 later this week. I've reviewed your mother's compliance and vital signs reports. In the first half of the month your mother was very good about taking her medications and her blood glucose level was stable. You can see this on the graph just to the left. But then she went through a period in which she missed her medications and the blood glucose level rose too high and went into the red zone. She seems to be back on track right now. We know that your mother lives alone, so here's what I recommend that you do to help her. Review this chart with your mother and show her how the missed medications affected the blood glucose level. Then have her view the Patient Education Videos for Medication Compliance and Blood Glucose Levels on her WebTV. You can find the videos on the Patient Education page. I also looked at your mother's blood pressure readings. I don't think that the cuff is being put on the arm correctly. I also want you to sit down with her and review the on-line video that shows how this is done with her. Make sure that she can use the blood pressure monitor correctly on her own. Then we can track her blood pressure just like we've been tracking the blood glucose. I also looked at the images of the small ulcer on your mother's leg. It looks like its beginning to heal. Keep it clean and apply the ointment your doctor prescribed. It will probably take a few more weeks to fully heal. Let's see... your mother's file also indicates that she used her Emergency Alert Button once last week. We called her within 2 minutes and she told us that it was a false alarm. She had accidentally pressed the button while getting dressed. So we didn't notify you or your sister. This type of false alarm is very common and not a problem for us. Please be assured that we are monitoring her 24 hours a day. If she presses the Alert Button and anything is wrong, we will call you and the other people on the contact list immediately. Lastly, you need to purchase some additional supplies. It's been 30 days since your mother refilled her medications. Also, my computer is telling me that she only has enough Glucose Monitoring Strips for another 10 days. I recommend that you order 2 more boxes. Please press the "Place Order" button directly below me and authorize us to send her more medication and supplies. We can ship everything immediately. Also, if you would like, we can send your mother some flowers on her birthday with a card from you. You can optionally order this from the Refill and Supply page. If you have any questions, press the contact nurse button directly below me and send us an e-mail. Someone will get back to you within the hour. Bob, I know that we have covered a lot of ground in this report today. I encourage you to press the replay button directly below me and go through the list of items at least one more time. We know that you're very concerned about your mother's health. You're doing a good job of caring for her. Let us know if we can help. Good bye."
It is clear that the above method of communication is effective, surpassing audio only, or written communication methods in its ability to provide not only factual matter, but, quite importantly, in its ability to motivate to action. The message may be played over if necessary to further obtain information not understood, or simply missed on the previous playing.
While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: Brown Eric W.,Newport Beach, California 92660,US,02985970 | | Assignee/Applicant First: Brown Eric W.,Newport Beach, California 92660,US,02985970 | | Assignee - Standardized: BROWN ERIC W | | Assignee - Original: Brown Eric W. | | Assignee - Original w/address: Brown Eric W.,Newport Beach, California 92660,US,02985970 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Newport Beach, California 92660,US | | Inventor Count: 1 | | Attorney/Agent: McCarthy, Denis Alexis | | Attorney/Agent - w/Address: McCarthy Denis Alexis|MacLachlan & Donaldson 47 Merrion Square, Dublin 2, IE|00072361 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A1 | | Publication Date: 2000-09-13 | | Publication Month: 09 | | Publication Year: 2000 | | Application Number: EP2000650017A | | Application Country: EP | | Application Date: 2000-03-10 | | Application Month: 03 | | Application Year: 2000 | | Application with US Provisional: EP2000650017A | 2000-03-10 | | Priority Number: US1999266647A | | Priority Country: US | | Priority Date: 1999-03-11 | | Priority Date - Earliest: 1999-03-11 | | Priority Month: 03 | | Priority Year(s): 1999 | | Earliest Priority Year: 1999 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B000500, G06Q005000, G08C001900, H04M001100 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
G06Q005000
| G
| G06
| G06Q
| G06Q0050
| G06Q005000
|
G08C001900
| G
| G08
| G08C
| G08C0019
| G08C001900
|
H04M001100
| H
| H04
| H04M
| H04M0011
| H04M001100
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| G06F 19/3418
A61B 5/002
A61B 5/0022
| -
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B000500B, G06F001934C | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: VAN POPPEL ET AL.: "An endoscopy PACS integrated with the HIS" PROCEEDINGS OF SPIE, 1996, pages 483-489, XP000910537 | | Count of Cited Refs - Non-patent: 1 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
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| | Count of Citing Patents: 129 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-02-28
| REG
| -
|
| Description: REFERENCE TO A NATIONAL CODE DE 8566 DESIGNATED COUNTRY DE NOT LONGER VALID |
| |
2002-01-09
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 2001-03-14 |
| |
2001-05-30
| AKX
| +
|
| Description: PAYMENT OF DESIGNATION FEES |
| |
2000-09-13
| AX
| +
|
| Description: EXTENSION OF THE EUROPEAN PATENT TO AL; LT; LV; MK; RO; SI |
| |
2000-09-13
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 1034734 A1 AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LI; LU; MC; NL; PT; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R AT;BE;CH;CY;DE;DK;ES;FI;FR;GB;GR;IE;IT;LI;LU;MC;NL;PT;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: RJ-DWDRAW 2001-03-14 2001 Deemed to be withdrawn | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP1034734A1
| 20000913
| Brown Eric W.
| BROWN ERIC W
|
| Title: Method for improving patient compliance with a medical program |
| |
JP2000316820A
| 20001121
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM |
| |
TW537880B
| 20030621
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Method for improving patient compliance with a medical program |
| |
US20020055892A1
| 20020509
| Brown Eric
| -
|
| Title: Personalized sales video system |
| |
US20040015132A1
| 20040122
| Brown Eric
| -
|
| Title: Method for improving patient compliance with a medical program |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP1034734A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP1034734A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 12/43 | | WO2001074229A2 | APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Publication Number: WO2001074229A2 | | Title: APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (Original): APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (English): APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | | Title (French): APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (German): | | Title (Spanish): | | Title - DWPI: Method for improving patient compliance with medical program, involves use by outpatient of portable dispensing and data-collection devices communicating with local base station reporting periodically to remote monitor station | Abstract:
A medical system apparatus and method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications.
A portable medical dispensing and data taking devices (20) for an out-patient which communicates with a base station (20). The base station (20) further communicates with a remote station (30).
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | Abstract (English):
A medical system apparatus and method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | Abstract (French):
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | | Abstract (German): | Abstract (Original):
A medical system apparatus and method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications.
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments.
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | | Abstract (Spanish): | Claims:
CLAIMS
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim I further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim I further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events; b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule; c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data; d) producing a health status report in accordance with the non-redundant set of heath event data; e) evaluating the health status report; f) recording professional comments concerning the health status report as a video and audio presentation; and g) adapting the recording and the health status report for electronic transmission on demand.
18. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of. a familiarity commentary, a clinical review of graphical records, a health parameter trend information, a behavioral parameter trend information, and a needed products available for purchase information.
19. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a positive behavioral reinforcement, an educational information, a purchasing information, at least one suggestion for improved patient behavior, and at least one of. clues, recommendations, acknowledgements and replies.
20. The method of claim 17 further comprising the step of producing a video screen comprising a first portion of the video screen depicting the health status report and a second portion of the video screen, adjacent to the first portion, depicting the professional comments recording.
21. The method of claim 17 wherein the comments recording comprises at least one of behavior reinforcing comments, educational comments, and reassurance comments wherein the comments recording is directed for improving patient behavior.
22. The method of claim 17 wherein the comments recording comprises a summary of the health status report including medical significance and recommended changes in patient behavior and medications.
23. The method of claim 17 wherein the comments recording comprises at least one of:
recommendations, suggestions, encouragement, demands, and clues for patient purchases.
24. The method of claim 17 further comprising the step of incorporating into the video screen, a plurality of action initiating button icons, and the ftirther step of integrating the button icons with actions related to choices presented in the professional comments recording.
25. The method of claim 24 wherein at least one of the action initiating button icons is enabled for at least one of-a video presentation of medical products and supplies recommended for purchase and an initiating video screen for the purchase of the medical products and supplies recommended in the professional comments recording.
26. The method of claim 24 wherein at least one of the action initiating button icons is enabled for restarting the professional comments recording.
27. The method of claim 24 wherein at least one of the action initiating button icons is enabled for transmitting a message to a medical professional.
28. The method of claim 17 ftirther comprising the step of incorporating into the video screen, a graphical representation of a medical device, and the ftirther step of integrating the button icons with actions related to operation of the medical device.
29. The method of claim 17 ftirther comprising the step of producing a video screen comprising a graphical listing of a plurality of commercial medical products related to the health status report and the professional comments and a graphical means for selecting any of said products on the screen.
30. The method of claim 29 wherein the video screen producing step further produces a graphical selection means for selecting a method of billing.
31. The method of claim 17 further comprising the additional step of notifying the patient that a video report is available for viewing.
32. The method of claim 29 wherein the video screen production comprises at least one of the steps ofa) determining which behavioral parameters are being measured, frequency and time of measurement;. b) determining a recommended behavioral parameter variance; c) determining which health parameters should be measured and how frequently; d) determining recommended health parameter values; e) determining if the patient wants to receive reminders and when such reminders should be provided; f) determining personal information of the patient; g) determining an identity of source of medications and supplies; h) determining contact information for related medical professionals; i) determining medications and supplies inventory information; and j) determining typical purchase quantities of said medications and supplies.
33. The method of claim 32 further comprising the step of comparing a prior known medications and supplies inventory status with a current said status to determine a recommendation list.
34. The method of claim 17 further comprising at least one of the following steps:
a) measuring patient behavioral parameters, b) measuring patient health parameters, c) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events; d) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule; e) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data; f) producing a health status report in accordance with the non-redundant set of heath event data; g) evaluating the health status report; h) generating a list of needed supplies based upon the health status report; i) generating a list of recommended supplies based upon patient personal data; j) generating a list of recommended supplies based upon holiday schedules; k) adapting a list for electronic transmission on demand; and 1) including incentives to purchase specific supplies with either list.
35. The method of claim 17 further comprising at least one of the following steps:
a) evaluating the patient behavioral data; b) generating a list of needed supplies based upon the health status report; c) generating a list of recommended supplies based upon patient personal data; d) generating a list of recommended supplies based upon holiday schedules; e) adapting a list for electronic transmission on demand; and f) including incentives to purchase specific supplies with either list.
36. The method of claim 17 further comprising at least one of the following steps:
a) evaluating the patient health parameter data; b) generating a list of needed supplies based upon the health status report; c) generating a list of recommended supplies based upon patient personal data; d) generating a list of recommended supplies based upon holiday schedules; e) adapting a list for electronic transmission on demand; and f) including incentives to purchase specific supplies with either list.
37. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing: a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; the dispensed medication counting means enabled for sequencing a counter each time the medication accessing means is manipulated for access to the medication storing means, and further enabled for establishing a data set comprising a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
38. The apparatus of claim 37 further comprising a human responsive signaling means enabled in accordance with a medical schedule.
39. The apparatus of claim 38 wherein the base station comprises a base station wave energy communicating means physically located for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means and for transmitting the medication schedule to the medical device means, the base station further providing a primary, two-way communicating means enabled for automatically transmitting the data set values of the medical device means, as received in the wave energy signal, in accordance with a selected communicating schedule.
40. The apparatus of claim 39 ftirther comprising a remote monitoring station comprising a secondary, two-way communicating means for receiving the data set values from the primary communicating means, the remote monitoring station further comprising a computation means for computing a graphical correlation between the received data set values and a selected medical schedule, the remote monitoring station comprising further enablement for transmitting the graphical correlation to the primary, two-way communicating means and for transmitting the medical schedule.
41. The apparatus of claim 37 wherein the portable medical device means is an inhalation dispenser wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of a medicinal inhalant stored within the medication storing means.
42. The apparatus of claim 37 wherein the portable medical device means is an intravenous dispensing system wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of an intravenous medication stored within the medication storing means.
43. The apparatus of claim 37 wherein the portable medical device means is a pill dispenser, wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage from a plurality of pills stored within the medication storing means.
44. The apparatus of claim 37 wherein the portable medical device means is a topical formulation dispenser wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of topical formulation stored within the dispensing means.
45. The apparatus of claim 38 wherein the medical device wave energy communicating means of the medical device means is adapted for receiving a medical schedule from the base station.
46. The apparatus of claim 40 wherein the remote monitoring station is adapted for composing a refill request message and for transmitting the refill request message to the patient.
47. The apparatus of claim 40 wherein the remote monitoring station is adapted for composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
48. The apparatus of claim 37 wherein the apparatus is enabled for storing a list of all said data sets established over the selected period of transmission time, the list being transmitted repetitively at a selected frequency of transmission so as to improve, through redundancy, the probability of receipt, by the base station, of all data sets established by the medical device means.
49. The apparatus of claim 48 wherein each of the data sets is paired with a check-sum and with a CRC, the base station providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction.
50. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing a medical state sensing means and a medical device wave energy communicating means; the medical state sensing means enabled for sensing a medical state variable each time the sensing means is manipulated in accordance with a medical state variable manipulation protocol, and further enabled for sequencing a counter each time the sensing means is manipulated and for establishing a data set comprising a value of the medical state, a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
51. The apparatus of claim 50 further comprising a human responsive signaling means enabled in accordance with a medical state sensing schedule.
52. The apparatus of claim 51 wherein the base station comprises a base station wave energy communicating means physically located for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means and for transmitting the medical state sensing schedule to the medical device means, the base station further providing a primary, two-way communicating means enabled for automatically transmitting the data set values of the medical device means, as received in the wave energy signal, in accordance with a selected communicating schedule.
53. The apparatus of claim 52 further comprising a remote monitoring station comprising a secondary, two-way communicating means for receiving the data set values from the base station, the remote monitoring station further comprising a computation means for computing a graphical correlation between the received data set values and a selected medical program, the remote monitoring station comprising further enablement for transmitting the graphical correlation to the patient.
54. The apparatus of claim 51 wherein the medical device wave energy communicating means of the medical device means is adapted for receiving a medical state sensing schedule from the base station.
55. The apparatus of claim 50 wherein the medical device means is enabled for storing a list of all said data sets established over the selected period of transmission time, the list being transmitted repetitively at a selected frequency of transmission so as to improve, through redundancy, the probability of receipt, by the base station, of all data sets established by the medical device means.
56. The apparatus of claim 55 wherein each of the data sets is paired with a check-sum and with a CRC, the base station providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction.
57. The apparatus of claim 50 wherein the medical state sensing means is a thermometer wherein the medical state is body temperature, the medical state sensing means adapted for measuring body temperature.
58. The apparatus of claim 50 wherein the medical state sensing means is a weight scale wherein the medical state is body weight, the medical state sensing means adapted for measuring body weight.
59. The apparatus of claim 50 wherein the medical state sensing means is a sphygmomanometer wherein the medical state is blood pressure, the medical state sensing means adapted for measuring blood pressure.
60. The apparatus of claim 50 wherein the medical state sensing means is blood glucose level sensor the medical state is blood glucose level, the medical state sensing means adapted for measuring blood glucose level.
61. The apparatus of claim 50 wherein the medical state sensing means is a photographic camera wherein the medical state is a level of wound healing, the medical state sensing means adapted for producing a digitized photograph of a wound. | | Claims Count: 61 | Claims (English):
CLAIMS
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim I further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim I further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events; b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule; c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data; d) producing a health status report in accordance with the non-redundant set of heath event data; e) evaluating the health status report; f) recording professional comments concerning the health status report as a video and audio presentation; and g) adapting the recording and the health status report for electronic transmission on demand.
18. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of. a familiarity commentary, a clinical review of graphical records, a health parameter trend information, a behavioral parameter trend information, and a needed products available for purchase information.
19. The method of claim 17 wherein the recorded comments comprise subject matter of at least one of: a positive behavioral reinforcement, an educational information, a purchasing information, at least one suggestion for improved patient behavior, and at least one of. clues, recommendations, acknowledgements and replies.
20. The method of claim 17 further comprising the step of producing a video screen comprising a first portion of the video screen depicting the health status report and a second portion of the video screen, adjacent to the first portion, depicting the professional comments recording.
21. The method of claim 17 wherein the comments recording comprises at least one of behavior reinforcing comments, educational comments, and reassurance comments wherein the comments recording is directed for improving patient behavior.
22. The method of claim 17 wherein the comments recording comprises a summary of the health status report including medical significance and recommended changes in patient behavior and medications.
23. The method of claim 17 wherein the comments recording comprises at least one of:
recommendations, suggestions, encouragement, demands, and clues for patient purchases.
24. The method of claim 17 further comprising the step of incorporating into the video screen, a plurality of action initiating button icons, and the ftirther step of integrating the button icons with actions related to choices presented in the professional comments recording.
25. The method of claim 24 wherein at least one of the action initiating button icons is enabled for at least one of-a video presentation of medical products and supplies recommended for purchase and an initiating video screen for the purchase of the medical products and supplies recommended in the professional comments recording.
26. The method of claim 24 wherein at least one of the action initiating button icons is enabled for restarting the professional comments recording.
27. The method of claim 24 wherein at least one of the action initiating button icons is enabled for transmitting a message to a medical professional.
28. The method of claim 17 ftirther comprising the step of incorporating into the video screen, a graphical representation of a medical device, and the ftirther step of integrating the button icons with actions related to operation of the medical device.
29. The method of claim 17 ftirther comprising the step of producing a video screen comprising a graphical listing of a plurality of commercial medical products related to the health status report and the professional comments and a graphical means for selecting any of said products on the screen.
30. The method of claim 29 wherein the video screen producing step further produces a graphical selection means for selecting a method of billing.
31. The method of claim 17 further comprising the additional step of notifying the patient that a video report is available for viewing.
32. The method of claim 29 wherein the video screen production comprises at least one of the steps ofa) determining which behavioral parameters are being measured, frequency and time of measurement;. b) determining a recommended behavioral parameter variance; c) determining which health parameters should be measured and how frequently; d) determining recommended health parameter values; e) determining if the patient wants to receive reminders and when such reminders should be provided; f) determining personal information of the patient; g) determining an identity of source of medications and supplies; h) determining contact information for related medical professionals; i) determining medications and supplies inventory information; and j) determining typical purchase quantities of said medications and supplies.
33. The method of claim 32 further comprising the step of comparing a prior known medications and supplies inventory status with a current said status to determine a recommendation list.
34. The method of claim 17 further comprising at least one of the following steps:
a) measuring patient behavioral parameters, b) measuring patient health parameters, c) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events; d) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule; e) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data; f) producing a health status report in accordance with the non-redundant set of heath event data; g) evaluating the health status report; h) generating a list of needed supplies based upon the health status report; i) generating a list of recommended supplies based upon patient personal data; j) generating a list of recommended supplies based upon holiday schedules; k) adapting a list for electronic transmission on demand; and 1) including incentives to purchase specific supplies with either list.
35. The method of claim 17 further comprising at least one of the following steps:
a) evaluating the patient behavioral data; b) generating a list of needed supplies based upon the health status report; c) generating a list of recommended supplies based upon patient personal data; d) generating a list of recommended supplies based upon holiday schedules; e) adapting a list for electronic transmission on demand; and f) including incentives to purchase specific supplies with either list.
36. The method of claim 17 further comprising at least one of the following steps:
a) evaluating the patient health parameter data; b) generating a list of needed supplies based upon the health status report; c) generating a list of recommended supplies based upon patient personal data; d) generating a list of recommended supplies based upon holiday schedules; e) adapting a list for electronic transmission on demand; and f) including incentives to purchase specific supplies with either list.
37. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing: a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; the dispensed medication counting means enabled for sequencing a counter each time the medication accessing means is manipulated for access to the medication storing means, and further enabled for establishing a data set comprising a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
38. The apparatus of claim 37 further comprising a human responsive signaling means enabled in accordance with a medical schedule.
39. The apparatus of claim 38 wherein the base station comprises a base station wave energy communicating means physically located for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means and for transmitting the medication schedule to the medical device means, the base station further providing a primary, two-way communicating means enabled for automatically transmitting the data set values of the medical device means, as received in the wave energy signal, in accordance with a selected communicating schedule.
40. The apparatus of claim 39 ftirther comprising a remote monitoring station comprising a secondary, two-way communicating means for receiving the data set values from the primary communicating means, the remote monitoring station further comprising a computation means for computing a graphical correlation between the received data set values and a selected medical schedule, the remote monitoring station comprising further enablement for transmitting the graphical correlation to the primary, two-way communicating means and for transmitting the medical schedule.
41. The apparatus of claim 37 wherein the portable medical device means is an inhalation dispenser wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of a medicinal inhalant stored within the medication storing means.
42. The apparatus of claim 37 wherein the portable medical device means is an intravenous dispensing system wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of an intravenous medication stored within the medication storing means.
43. The apparatus of claim 37 wherein the portable medical device means is a pill dispenser, wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage from a plurality of pills stored within the medication storing means.
44. The apparatus of claim 37 wherein the portable medical device means is a topical formulation dispenser wherein the medication accessing means triggers the medication counting means and simultaneously dispenses a selected dosage of topical formulation stored within the dispensing means.
45. The apparatus of claim 38 wherein the medical device wave energy communicating means of the medical device means is adapted for receiving a medical schedule from the base station.
46. The apparatus of claim 40 wherein the remote monitoring station is adapted for composing a refill request message and for transmitting the refill request message to the patient.
47. The apparatus of claim 40 wherein the remote monitoring station is adapted for composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
48. The apparatus of claim 37 wherein the apparatus is enabled for storing a list of all said data sets established over the selected period of transmission time, the list being transmitted repetitively at a selected frequency of transmission so as to improve, through redundancy, the probability of receipt, by the base station, of all data sets established by the medical device means.
49. The apparatus of claim 48 wherein each of the data sets is paired with a check-sum and with a CRC, the base station providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction.
50. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing a medical state sensing means and a medical device wave energy communicating means; the medical state sensing means enabled for sensing a medical state variable each time the sensing means is manipulated in accordance with a medical state variable manipulation protocol, and further enabled for sequencing a counter each time the sensing means is manipulated and for establishing a data set comprising a value of the medical state, a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
51. The apparatus of claim 50 further comprising a human responsive signaling means enabled in accordance with a medical state sensing schedule.
52. The apparatus of claim 51 wherein the base station comprises a base station wave energy communicating means physically located for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means and for transmitting the medical state sensing schedule to the medical device means, the base station further providing a primary, two-way communicating means enabled for automatically transmitting the data set values of the medical device means, as received in the wave energy signal, in accordance with a selected communicating schedule.
53. The apparatus of claim 52 further comprising a remote monitoring station comprising a secondary, two-way communicating means for receiving the data set values from the base station, the remote monitoring station further comprising a computation means for computing a graphical correlation between the received data set values and a selected medical program, the remote monitoring station comprising further enablement for transmitting the graphical correlation to the patient.
54. The apparatus of claim 51 wherein the medical device wave energy communicating means of the medical device means is adapted for receiving a medical state sensing schedule from the base station.
55. The apparatus of claim 50 wherein the medical device means is enabled for storing a list of all said data sets established over the selected period of transmission time, the list being transmitted repetitively at a selected frequency of transmission so as to improve, through redundancy, the probability of receipt, by the base station, of all data sets established by the medical device means.
56. The apparatus of claim 55 wherein each of the data sets is paired with a check-sum and with a CRC, the base station providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction.
57. The apparatus of claim 50 wherein the medical state sensing means is a thermometer wherein the medical state is body temperature, the medical state sensing means adapted for measuring body temperature.
58. The apparatus of claim 50 wherein the medical state sensing means is a weight scale wherein the medical state is body weight, the medical state sensing means adapted for measuring body weight.
59. The apparatus of claim 50 wherein the medical state sensing means is a sphygmomanometer wherein the medical state is blood pressure, the medical state sensing means adapted for measuring blood pressure.
60. The apparatus of claim 50 wherein the medical state sensing means is blood glucose level sensor the medical state is blood glucose level, the medical state sensing means adapted for measuring blood glucose level.
61. The apparatus of claim 50 wherein the medical state sensing means is a photographic camera wherein the medical state is a level of wound healing, the medical state sensing means adapted for producing a digitized photograph of a wound. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
CLAIMS
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station. | Independent Claims:
CLAIMS
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
10. A method for improving patient compliance with a medical program, the method comprising the steps:
a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
17. A method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
a) logging a sequence of health event data into a data storage means at each of a plurality of time dependent data logging events; b) transmitting each of a plurality of the sequence of health event data to a remote monitoring center in accordance with a preferred transmission schedule; c) merging the health event data of the several sequences of health event data as a non-redundant set of such health event data; d) producing a health status report in accordance with the non-redundant set of heath event data; e) evaluating the health status report; f) recording professional comments concerning the health status report as a video and audio presentation; and g) adapting the recording and the health status report for electronic transmission on demand.
37. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing: a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; the dispensed medication counting means enabled for sequencing a counter each time the medication accessing means is manipulated for access to the medication storing means, and further enabled for establishing a data set comprising a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
50. An apparatus for improving patient compliance with a medical program, the apparatus comprising:
a portable medical device means providing a medical state sensing means and a medical device wave energy communicating means; the medical state sensing means enabled for sensing a medical state variable each time the sensing means is manipulated in accordance with a medical state variable manipulation protocol, and further enabled for sequencing a counter each time the sensing means is manipulated and for establishing a data set comprising a value of the medical state, a numerical value of the counter and a corresponding time and date of the numerical value of the counter, the wave energy communicating means enabled for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station. | Description:
TITLE: Apparatus And Method For Improving Patient Compliance With A Medical Program
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION:
This invention relates generally to the monitoring and control of medical care data by non-medically trained individuals, and more particularly to an automated method of collecting and using patient care data for assuring a high level of healthcare vigilance with feedback to the patient and the patient's caregivers, and with provision for professional medical advice including the selection of offered medications and other medical supplies for sale.
DESCRIPTION OF RELATED ART:
The following art defines the present state of this field:
Bro, U.S. 5,722,418 describes a method for mediating social and behavioral influence processes through an interactive telecommunications guidance system for use in medicine and business that utilizes an expert such as a physician, counselor, manager, supervisor, trainer, or peer in association with a computer that produces and sends a series of motivational messages and/or questions to a client, patient or employee for changing or reinforcing a specific behavioral problem and goal management. The system consists of a client database and a client program that includes for each client unique motivational messages and/or questions based on a model such as the transtheoretical model of change comprising the six stages of behavioral change and the 14 processes of change, as interwining, interacting variables in the modification of health, mental health, and work site behaviors of the client or employee. The client program in association with the expert utilizes the associated 14 processes of change to move the client through one of the six stages of behavioral change when appropriate by using a plurality of transmission and receiving means. The database and program are operated by a computer that at preselected time periods sends the messages and/or questions to the client through use of a variety of transmission means and ftirthermore selects a platform of behavioral issues that is to be addressed based on a given behavioral stage or goal at a given time of day.
Kutzik et al, U.S. 5,692,215 describes a system that provides for monitoring a user in a user living area. The system includes a system controller and an activity detection subsystem. The activity detection subsystem monitors a daily living activity of the user and provides information representative of the daily living activity to the system controller. The system controller includes a control circuit which generates a control signal in response to the daily living activity information obtained by the activity detection subsystem. Control information from the system controller is applied by way of a control information communication channel both to the activity detection subsystem and to a remote monitoring site. The activity detection subsystem may be system for determining the movement of the user around the home, medication compliance by the user, problems with usage for stoves or other potentially dangerous appliances, and selected auxiliary appliances.
Lipscher, U.S. 4,082,084 describes a portable diagnostic device, particularly for medical field-examinations comprising a case-like housing in which replaceable electronic examining units are arranged serving for the examination of different physiological functions and/or conditions. The housing comprises an electronic power supply feeding each of the electronic examining units, a common display receiving the output signals of the examining units and electrical connectors providing electrical connections between the housing and each of the examining units. The inner room of the housing is divided into two separate parts, the first of which is arranged in a modular system and accommodates slide-in examining units, while the second part serves to accommodate the accessory means required for the examinations.
2 Fu, U.S.4,80-31,625 provides for a personal health monitor which includes sensors for measuring patient weight, temperature, blood pressure, and ECG waveform. The monitor is coupled to a central unit via modems and includes a computer which is programmed to prompt a patient to take prescribed medication at prescribed times, to use the sensor to measure prescribed health parameters, and to supply answers to selected questions. Medication compliance information, test results, and patient answers are compiled in a composite log which is automatically transmitted to the central unit. The computer is also programmed automatically to disconnect the monitor from an alternating current power source and to rely on internal battery power during certain periods of patient monitor interaction, such as during use of the ECG module. In this way, danger to the patient and complexity of the ECG module are minimized. The computer is also programmed to compare measured test information with predetermined expected values, and in the event of a discrepancy, to collect additional information from the patient to assist trained personnel at the central unit in interpreting the composite log.
The computer is also programmed to alert the central unit promptly in the event one or more measured parameters falls outside of a prescribed normal range. The normal range for a given parameter is made to vary in accordance with the measured value of one or more other parameters in order to reduce the incidence of false alarms.
Borrin et al., U.S. 4,827,943 provides a link between the caregiver and the subject being monitored which utilizes an intermediate base station with redundant signal paths between the base station and the caregiver. The caregiver wears a unit which receives signals from the base station. Signals from the base station provide information about the subject being monitored and provides signals for use in determining whether the caregiver remains within the range of the base station. The unit worn by the subject being monitored can include diagnostic circuitry for evaluating signals received from sensors to transmit an alarm signal to the base stations when the subject being monitored is in need of assistance. A range monitoring system is provided which alerts the subject being monitored as well as the caregiver whenever the subject being monitored moves outside the range of the base station.
3 Kaufman, U.S. 4,933,873 describes an interactive patient assistance device which houses both pre-selected doses of medication and a physical testing device. Both medication and the testing device are normally retained within separate compartments within the device away from access by the patient. The device keeps track of medication and diagnostic testing schedules. The device is also capable of receiving and interpreting verbal commands of the patient. The device makes a pre-selected dose of medication available to the patient in response to either the medication schedule or the receipt of a verbal command by the patient. Likewise, the testing device is made available to the patient in response either to the testing schedule or the receipt of a verbal command from the patient.
Treatch, U.S. 5,007,429 describes a user interface for directing the programming of operating parameters for patient blood pressure testing into and downloading blood pressure data from ambulatory patient blood pressure monitoring units. The user interface operates on a system comprising a plurality of microprocessor based, ambulatory blood pressure measuring patient units, an office control unit, and a data processing center, typically accessed over telephone lines. An office control unit is used to program patient units with test regimens for specific patients. The control units are also used to download data from the patient units and to transfer the data, along with patient identifying data, to the central data processing facility. The office control unit includes local memory which stores various interface routines, a microprocessor for executing the routines, a 12-character keypad allowing input of integers and a display for displaying prompts to the user. Upon initial power up of the control unit, and operator using the control unit is prompted through a start up sequence and a menu selection sequence to carry out the desired functions of the system. All selections are made, and all operating parameters are entered, through a telephone like keypad. The display indicates to the user which parameter entry of which is called for and which menu items are available for selection. During transfer of data to the central processing facility, additional prompts may be given to the operator by voice over the telephone handset.
4 Blomquist, U.S. 5,338,157 describes an invention relating to systems and methods for communicating with ambulatory medical devices, such as drug delivery devices, both locally and remotely. In one embodiment, a caregiver drug pump communicates with a remote patient drug pump for data gathering,
trouble shooting, and operational program changes. The caregiver drug pump is at least substantially identical in configuration to the patient drug pump. The caregiver drub pump transmits caregiver key input signals to the remote patient drug pump. The patient drug pump receives the key input signals, accesses a desired program, and transmits information for display on the display of the caregiver drug pump. In another embodiment, a computer is provided for communicating locally and/or remotely with a drug pump. The computer may include a display with an image of a pump. The computer may be operated through the use of a mouse or touch screen with respect to the image of the pump, to simulate use of the pump while using the personal computer. The computer may also be used as a training aid for training a caregiver and/or patient how to use the drug pump.
Maestre, U.S. 5,347,453 describes a portable programmable medication device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the time occurrence of each programmed administration time, and audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
Stutman, U.S. 5,416,695 describes a medical alert system which enables an authorized user, such as a doctor, to remotely set selection and limit parameters pertaining to specific medical and geodetic information of an ambulatory patient and thereafter received updates of that information over a wireless communication network when the parameters have been met. A telemetry device attached to the patient provides an inbound stream of medical and geodetic information to a host computer, which is configured to exact selected portions of that information in response to the parameters provided by a remote processing device via a communications network. Upon completion of the latter process, the host computer transfers the extracted information to the remote processing device over the network, thereby informing the doctor of a medical situation.
Maestre, U.S. 5,495,961 describes a portable programmable medication alarm device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the timed occurrence of each programmed administration time, an audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route, and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication 6 container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
Vasko, U.S. 5,573,506 describes a remotely programmable infusion pump with interactive voice response via touch-tone phone (i.e., voice mail system in IV pump). The remotely programmable infusion system also comprises a voice storage unit for storing the voice signal. The remotely programmable infusion system further comprises a processor, coupled to the remote communication port, to the voice storage unit, and to the memory, for accessing the voice signal from the voice storage unit and the programmable protocol from the memory, and for processing the programmable protocol in response to receiving the remote programming signal.
Kurtenbach, U.S. 5,582,323 describes a medication dispensing and monitoring system of a present invention includes a housing containing a plurality of pill dispensing compartments for dispensing medication to a patient at a desired time. The invention is programmed to dispense medication at the desired time and activates alarms if the proper procedure is not completed. The invention also contacts the emergency personnel through phone lines and initiates two-way hands free communication between the patient and emergency personnel. The invention further includes a pendent transmitter worn by the patient to contact emergency personnel.
Hultman, U.S. 5,582,593 describes an ambulatory medication delivery system which includes an ambulatory pump unit having a computer control linear motor pump for pumping predetermined volumes of fluid in accordance with a programmed delivery schedule which may be altered through communication with a remote monitoring location via a telephone data access line or via radio frequency communication. A clinician communication unit and a patient communication unit receive and send information to the ambulatory pump unit and also communicate via a telephone data modem access to the computer at a remote monitoring location at which trained health personnel can monitor a number of patient locations and alter or change medication delivery profiles as required.
7 Tacklind, U.S. 5,704,366 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
Ridgeway, U.S. 5,710,551 describes a system for the remote monitoring of in-home self-medication to assure compliance with prescribed dosage schedules. The system comprises at least one subscriber home medication station which interfaces with a communications link and a remote central monitoring station also interfaced with the link and operative to receive and analyze messages transmitted by the home medication station. The preferred home medication station embodiment transmits messages to the central station over the communications link each time the home medication station is accessed for a dosage of medication. Central station computer means verify receipt of such signals within each subscriber's uniquely scheduled dosage time windows, and alert an operator to take appropriate action if a dosage schedule error is detected. Alternative home medication station embodiments utilize a built-in programmable timer module to verify accessing of medication within a subscriber's uniquely scheduled dosage time windows, and to initiate transmission of alarm signals to the central station over the communications link if dosage schedule errors are detected by the timer module. All embodiments provide subscribers with help-button means to initiate transmission of alarm messages to the central station over the communications link in event of adverse reaction to medication, or other emergencies. Since the central station will be alerted if any scheduled dosage is missed, no emergency rendering a subscriber unable to press a help-button or call for help can go undetected longer than the maximum time between consecutively scheduled dosages.
8 Tacklind, U.S. 5,752,709 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
Stoop, U.S. 5,767,791 describes a two-way telemetry system which displays and monitors physiologic and other patient data of multiple, remotely located patients at a central location. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and a central station which receives, displays, and monitors the patient data received from the remote telemeter. The telemeters communicate with the central station using a two-way TDMA protocol which permits the time sharing of timeslots, and which uses a contention slot to permit telemeters to transmit service requests to the central station. Two-way special diversity is provided using only one antenna and one transceiver on each remote telemeter. The remote telemeters include circuitry for turning off the active transceiver components thereof when not in use (to conserve battery power), and include circuitry for performing a rapid, low-power frequency lock cycle upon power-up. The system has multiple modes of operation, including a frequency hopping (spread spectrum) mode and a fixed frequency mode, both of which preferably make use of the 902-928 MHz ISM band. Patient locators are provided to allow the clinician to track the location of each patient.
Russo, U.S. 5,807,336 describes a medical apparatus that is provided with a programmable medical device disposed at a first room location and a remote monitor and/or controller disposed at a second room location. The programmable medical device is used to administer a medical treatment to a patient, and the remote monitor/controller may be used to monitor the operation of the medical device, control the operation of the medical device, and/or transfer data from the medical device to the remote monitor/controller. The apparatus may allow voice communication between the remote 9 monitor/controller and the patient who is receiving treatment via the medical device while the medical device is being monitored and/or controlled from the remote location. The remote monitor/controller may also include means for determining the type of medical device to which it is connected.
Brudny et al., U.S. 5,810,747 describes an interactive intervention training system used for monitoring a patient suffering from neurological disorders of movement or a subject seeking to improve skill performance and assisting their training. A patient (or trainee) station is used in interactive training. Ine patient or trainee) station includes a computer. A supervisor station is used by, for example, a medical or other professional. The patient (or trainee)
station and the supervisor station can communicate with each other, for example, over the Internet or over LAN. The patient (or trainee) station may be located remotely or locally with respect to the supervisor station. Sensors collect physiologic information and physical information from the patient or subject while the patient or subject is undergoing training. This information is provided to the supervisor station. It may be summarized and displayed to the patient/subject and/or the supervisor. The patient/subject and the supervisor can communicate with each other, for example, via video, in real time. An expert system and neural network determine a goal to be achieved during training. There may be more than one patient (or trainee) station, thus allowing the supervisor to supervise a number of patients/subjects concurrently.
The prior art teaches the use of electronic measuring and monitoring of patients. However, the prior art does not teach that an automated medication and monitoring system with feedback can be used with such a method that data completeness and accuracy is assured through a novel signal repetition protocol. Also, the prior art does not teach that reporting of health results to the patient may be done in an interactive manner coupled with professional medical advisers helping, through a novel remote communication protocol, to direct optimum patient behavior, including offering of medical supplies and medications associated with an ongoing management program. The present invention fulfills these needs and provides further related advantages as described in the following summary.
SUMMARY OF THE INVENTION
The present invention teaches certain benefits in data handling apparatus and methods which give rise to the objectives described below.
The present invention provides a home care medical data logging, communication, product and supplies offering, incentive and reporting methods that have not been described in the prior art.
A primary objective of the present invention is to provide such an apparatus and method having advantages not taught by the prior art and which are capable of accurate medical data recording especially for a non-compliant patient.
Another objective is to provide such an apparatus and method capable of assuring the transmission of accurate medical data although a patient is not within data transmission range of a data receiving station for significant periods of time.
Yet another objective is to provide such an apparatus and method having means of correlating and reporting health and behavioral status on an interactive basis so as to improve compliance by a reluctant patient.
A further objective is to provide such an apparatus and method enabled for offering and motivating a patient to purchase supplies and medications in accordance with a medical care program.
Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
1 BRIEF DESCRIPTION OF THE DRAWING
The accompanying drawings illustrate the present invention. In such drawing:
FIGURE I is a schematic block diagram showing the relationship between major elements of the invention; FIGURE 2 is a schematic block diagram of a typical dispensing device thereof, FIGURE 3 is a typical printed report of the invention illustrating medication dosing compliance correlated to patient status; FIGURE 4 is a typical monitor screen display report of the invention illustrating dosing compliance correlated to patient status; FIGURE 5 is a typical monitor screen display report of the invention illustrating oral medication compliance; FIGURE 6 is a typical monitor screen display report of the invention illustrating daily 20 sugar level variation for a diabetes patient and showing the measurement device therefor; FIGURE 7 is a typical monitor screen display of the invention for inputting patient care orders for, in the present case, medication instructions; FIGURE 8 is a typical monitor screen display of the invention illustrating a method of delivering health or behavior information with a nurse, clinician or other helper providing audio and video transmission of explanations, information, feedback, suggestions, instruction on ordering medication refills and supplies, behavior modification and control and other invention pertinent communications; and 12 FIGURE 9 is a typical monitor screen display of the invention illustrating a method of presenting and offering products or services as a custom shopping list which may be acted upon electronically or, alternately, may be printed out by the patient for future reference.
DETAILED DESCRIPTION OF THE INVENTION
The above described drawing figures illustrate the invention, a system including apparatus and method, for improving patient compliance with a medical program. The medical program may include medication dispensing elements as well as medical state sensing elements or both. The invention is used to monitor and modify medical care and especially patient behavior patterns associated with medication dispensing, medical state sensing and patient behavior with respect to acquisition and maintenance of medical treatment related supplies, wherein the apparatus comprises: a portable medical device means 10 providing, in one embodiment, a medication storing means such as a pill bottle, a medication accessing means such as the cap to the pill bottle, a dispensed medication counting means such as an electronic flip-flop counting circuit 40 with a simple numerical indexer, preferably powered by a battery B 1, in communication with the pill bottle cap by any electromechanical, magnetic or other physical element known to one of skill in the art and represented by letter "M" in Figure 2, such that when the cap is removed from the pill bottle, a switch S1 is made such that the circuit counting means indexes to a next higher numerical value, and a medical device wave energy communicating means such as a radio transceiver 50 is activated. The portable medical device means 10 may include a single dispensing and counting unit or multiple units, and further may include a single counting unit for multiple dispensed items, or multiple counting units (for redundancy) for a single dispensed item; the dispensed medication counting means being enabled for sequencing the counting circuit 40 each time the medication accessing means is manipulated, for gaining access to the medication storing means, the device means 10 being further enabled by a logic circuit 60 for establishing a data set comprising, for example, the current numerical value of the counting circuit 40 and a corresponding time and date of the sequencing of the counting circuit 40 as through the use of a clock circuit 70, the wave energy communicating means 50 being enabled by a control program in the logic circuit 13 60, for example, for repetitively transmitting, as for example, every 30 minutes, a wave energy signal corresponding to each newly established data set during a selected period of transmission time, as for example 72 hours, the transmission time period being chosen to assure a selected probability of the receipt of said wave energy signal by a base station 20 which is remotely located with respect to the medical device means 10 but which is within practical wave energy receiving range frequently. Because the transmission range of the transceiver is limited by FCC rules, it is conceivable, and quite common for the portable medical device means 10 to be carried by the patient to a location that is not within the range of the base station 20. This would happen on a regular basis if, for instance, the patient was in the habit of taking a walk in the park between 2 PM and 4 PM each day and carries his pill bottle so as to be able to take his 3 PM pills. This dosage would be counted when the pill bottle cap is removed, but could not be received immediately at the base station 20 since the pill bottle would be out of range at that time.
In another embodiment the invention comprises: the portable medical device means 10 providing a medical state sensing means and the medical device wave energy communicating means 50 of the first embodiment; the medical state sensing means is enabled for sensing a medical state variable, such as body temperature, body weight, blood pressure level, or blood glucose level each time the sensing means, i.e., thermometer, weight scale, sphygmomanometer or blood glucose measurement system, respectively, is manipulated in accordance with any well known medical state variable manipulation protocol, i.e., common to any medical examination office or clinic, and further enabled, by a simple mechanical arrangement "M" such as the use of a sensor for sequencing the electronic counter 40, as described above, each time the sensing means is manipulated and for establishing a data set comprising a value of the measured medical state, a numerical value of the counter 40 and a corresponding time and date of the measurement from the clock circuit 70, the wave energy communicating means 50 being enabled, as above, for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period, again,
being chosen to assure a selected probability of the receipt of said wave energy signal by the base station 20 as previously described.
14 In either embodiment, the invention further preferably comprises a human responsive signaling means, such as an audible alarm or a vibration generating device (not shown), enabled in accordance with the patient's medication and state measurement schedule, referred to below as the "medical schedule," to alert the patient when medication dosing or medical state sensing is required. Such audible and vibration alarms, i.e. , attention demanding techniques, are well known in the personal pager industry.
Preferably, the base station 20 comprises a base station wave energy communicating means, such as a radio transceiver 50 similar or identical to that of the medical device means 10, and is preferably physically located in the patient's home for example, for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means 50 and also for transmitting the medical schedule to the medical device means 10, the base station 20 further providing a primary, two-way communicating means 90 shown in Figure 1, such as a telephony or other communication means, enabled by logic circuits and software programming, as is well known in systems engineering, for automatically transmitting the data set values of the medical device means 10, as received via the wave energy signal, in accordance with a selected communicating schedule. That is to say, the information received at the base station 20 from one or more of the portable medical device means 10 is transmitted via the two-way communicating means 90 to a remote monitoring station 30, the remote monitoring station 30 further comprising a computation means, such as a general purpose computer, for computing summary information of interest to medical professionals and caregivers and the patient him/herself, such as a correlation analysis between the received data set values and a selected medical state parameter that is being monitored, the remote monitoring station 30 comprising further enablement, by modem or other means, for transmitting information of interest to the primary, two-way communicating means via the secondary, two-way communicating means 90 and for transmitting the selected medical schedule,
usually a schedule defined by a primary medical care giver such as the patient's medical doctor. Preferably the base station 20 receives a unique identification code "PB187" representing "pill bottle 187" or "BPM456" representing blood pressure monitor 456," and "1030A-120198" representing a time-date stamp corresponding to, 10:30 AM on Dec. 1, 1998, and, in the case of a medical state measurement, additionally a measured value code such as "125/80" representing blood pressure levels at the time and date of the measurement. Such a transmission would therefore be coded as "BPM456. 103OA-120198.125/80" and may be transmitted in binary coded decimal form or converted to digital form prior to transmission. Other transmissions from the various medical device means 10 may include a low battery status, out of medication, or other supply, "active," "standby," or "inoperative" status, etc. along with the time/date identification. The software protocol used in the medical device means 10 or in the base station 20, or both, is preferably configured for identification of an emergency state, as when blood pressure or glucose level are at a dangerous level. In this case the medical device means 10 will immediately set an audible or other alarm to request a repeat of the measurement by the patient or his caregiver. In the following, and clearly throughout this description and the claims that follow, the use of "patient" should be recognized as including the actual patient, or his immediate caregiver such as a family member or a care provider such as a practical nurse or a medical worker. It is intended that preferably the patient will be active with respect to the present invention, at least in part, but if the patient is not active, a caregiver acts for the patient and as such, the caregiver must be at least frequently in close proximity to the actual patient.
The base station 20 is configured to immediately send an alarm message to the remote monitoring station 30 for immediate authoritative supervision and decision making, etc. The means for accomplishing these results, i.e., enablement, is most efficaciously completed through software logic programs controlled by microprocessor means within the medical device means 10 and the base station 20 means. Such enablement is considered to be within the ability of those of average skill in the art, and are therefore not defined here in further detail.
Clearly, the portable medical device means 10 may be any one or more of the well known dispensing devices in use in pharmacy and medicine such as an inhalant dispenser, an intravenous dispensing system, an oral or anal medication dispenser, a topical formulation 16 dispenser, etc., for dispensing a selected dosage of a medicinal inhalant, intravenous medication, medicaments formulated as pills, capsules, caplets or other forms of solid medications or liquid or other forms of internal medications, as well as topical formulations. In each case the medication accessing means, such as a bottle cap, a dispensing tube winder, an inhalant pump, or a IV flow meter, is adapted by any simple well known sensing arrangement to trigger the counting means while simultaneously dispensing a previously selected dosage of the medication. Alternately, the dispensed amount may be controlled by the patient or the on-site caregiver.
In the preferred embodiment the medical device wave energy communicating means 50 of the medical device means 10 is adapted for accomplishing certain inventive methods, through any common or well known data manipulation process for receiving and implementing the medical schedule as transmitted from the base station 20, a simple matter of data transmission and receival. In this manner, the medication or state sensing schedule is remotely set-up within a memory device or circuit 80 of the medical device means 10, and may also be changed at any time. Also, the remote monitoring station 3 0 is adapted by these methods, i.e., simple tracking protocols, for composing a refill request message, at appropriate times when its calculations show that supplies are low, and for transmitting the refill request message to the base station 20 to alert the patient by, for instance, illuminating a lamp or presenting a written message on an LCD, or similar display on the base station, and, or on the medical device means 10.
Preferably, the methods of the present invention are adapted for composing graphical summary reports showing, for instance, when each medication was, in fact, taken and when each medical measurement was, in fact, completed. Such a history of events may be for a week, month or longer so as to enable the patient to see trends. The portable medical device means 10 of the invention is enabled, by memory device 80, for storing a list of all said data sets established over the selected period of transmission time, e.g., 72 hours, the list being transmitted repetitively at a selected frequency of transmission, e.g., every 30 minutes, so as to improve, through transmission redundancy, the probability of receipt, by the base station 20, of all data sets established by the medical device means 10.
17 In the preferred embodiment, each of the data sets is paired with a check-sum and with a CRC, the base station 20 providing check-sum and CRC error-
reducing protocol operating on the data sets as received for providing error reduction. These error checking protocols are well known, but have not been previously used in the field of the present application, and are certainly critically important in the present use. The abbreviation "CRC" stands for Cyclic Redundancy Check, and is, to those of skill in the art, a well known term defined in the IEEE Standards and is applied broadly in the digital data processing field to enable error checking in data transmissions.
In use, the patient notifies the remote monitoring center as to the master medical schedule for medications and/or medical state measurements required. This may be accomplished by telephone, fax, written communication, or internet screen, the latter being illustrated in Figure 7. A database is established at the remote monitoring center for the patient. The master medical schedule information is downloaded to the base station 20 through the primary and the secondary communicating means, generally via telephony. The base station 20 then transmits an appropriate portion of the master medical schedule to each of the medical device means 10 which will be used by the patient. Each of the medical device means 10 then alerts the patient when a medication or a measurement should be taken. The medical device means 10 continues to remind the patient that such event is required until it is accomplished. The fulfillment of each event is recorded as described above and entered into the event list. The entire list is transmitted to the base station 20, as defined above, every selected period, such as every 30 minutes over a time duration of 72 hours for example or other selected duration. Each time the list is received by the base station 20 it is compared with the resident list at the base station 20 and any blanks in the resident list are filled-in from the newly received list. The duplicate entries are then discarded so that the resultant list is complete and non-redundant.
The invention further provides a reporting function which is illustrated in Figures 3-6 and 8. Figure 3 illustrates a correlation report which may be used to highlight the importance of behavioral compliance with a medication schedule for maintenance of a health parameter, such as blood pressure level or blood glucose level. Individual data reports are 18 well-known in the medical industry, but graphical reports of patient behavior versus one or more health statistics, as defined by a chart, such as a bar chart, is novel and considered distinct from the prior art.
Once the reports are generated by the remote monitoring station 30, they are delivered to the patient, to enable action to be taken. Delivery modalities include hardcopy paper reports sent by mail delivery, faxed copies, or internet web-page delivery. The internet web-page delivery is preferred because it economically allows the use of color graphics. Color might be used in Figures 4 and 5, for example, to highlight deviations from the scheduled dosage time such that missed dosages or delayed dosages are shown in red and on-time dosages are shown in green. Highlighting good and bad behavior patterns to the patient is functional for establishing improved behavior.
Figure 4 illustrates the use of reports similar to Figure 3, but in a web-page format. Often patients become confused when they must use many different of the medical devices means. Figure 6 illustrates how information can be more readily associated with a specific device to enhance patient recognition and understanding, i.e., the inclusion of a picture of the device the patient is using. Figure 6 also shows controls (screen buttons) whereby the patient or local caregiver may send commands pertaining to device settings directly to the remote monitoring station 30. The remote monitoring station 30, in turn, is enabled for relaying these control messages to the base station 20 located in the patient's residence. In this manner, the web-page format is used to provide the patient with information and can also be used by a clinician at a remote location to control a patient's instruments, for example, based upon the health data statistics that are compiled.
Figure 7 illustrates how the web-page format can be entirely dedicated to the setup and control of a medical device means 10, such as a medication dispenser. In Figure 7, a clinician at the remote monitoring center or at any remote location can enter dosing related information and instructions and the medical schedule for that medication dispenser.
19 Figure 8 illustrates an advance in the reporting of medical information to patients. The advance includes the correlation of two or more behavior and/or health data graphics which are constructed from actual measurements of the patient's compliance or health statistics. Further, the report includes a human image and related spoken message which is preferably a video message but may be live. This human image is preferably a clinician, such as a nurse, but may also be a doctor or other primary caregiver. As stated, the message may be delivered in real-time, but is preferably delivered in a stored format, such as by e-mail or a stored streaming video, so that the patient may view it or replay it more than once, at his or her convenience. Such replay is facilitated by a dedicated replay button as shown in the figure. The video message report may include elements of encouragement, education, information, reinforcement, or reprimand, as may be needed to modify the behavior of the patient to comply with instructions. Such elements may further include a list of items which the patient may need or want to purchase or otherwise obtain, such as medication refills, information flyers, insurance information, and miscellaneous items such as flowers, greeting cards, etc. for improving the patient's morale.
The reports are preferably interactive so as to enable the patient to easily reply to questions or ask questions via a dedicated contact button. Such a button will, in one embodiment, activate an e-mail reply screen, as is well-known, that may generate text, voice or video image formats for composing a reply message. Further, the report includes purchasing reminders, clues or requests made by the clinician image, such as to remind the patient to purchase refills on medication or medical device supplies, such as blood glucose monitoring test strips, to order home supplies such as flowers, books, videos, music recordings, or other household goods, or to order new equipment such as an additional pill bottle for a new medication. Even further, the report allows the patient to respond to such reminders, clues or requests via a "place order" button, as illustrated in Fig. 9. The place order button, depending upon the type of account established with the remote monitoring center, and may immediately fulfill the order suggested by the video image or it may lead to order selection and confirmation screens, as is well-known in the art. Similarly, a "shopping list button" may replace the "place order button" for patients that do not have an established account for automatic fulfillment. The shopping list button places the items which would have been on the automatic fulfillment list on a printable shopping list. The patients receive the benefit of an automatically generated list of medications and supplies that they may then bring to their preferred retail drugstore or 5 other retail establishment. Since many patients are forgetful due to age, medication side-effects or other reasons, the shopping list becomes an important feature to ensure that quality, on-time refills and supplies are available when needed.
The list of items for automatic fulfillment or for inclusion on the shopping list is created 10 by comparing the prior known status of the patient's medication and supplies with the current measured status of behavioral and health parameters. For instance, during the setup of a new patient on the monitoring system, the patient would provide certain details as follows:
1. Which behavioral parameters are being measured, how frequently and at what times each day. For instance, if daily, the time of day and interval between occurrences. If other than daily, such instructions might include, for instance, "remember to take five different medications at four different times each day with medications A and B requiring 2 tablets each time, and medications C, D and E requiring I tablet each time.
2. What are the recommended behavioral parameter variances from the patient's physician, nurse or other professional clinician. Example: Take medications at 8am, 12pm, 5pm and I Opm but not more than I hour early or 2 hours late each time.
3. Which health parameters are being measured and how frequently and at what times each day, if daily, or at what times and intervals if not daily, e. g., measure blood glucose level before each meal or measure blood pressure every other day immediately after waking up.
4. What recommended health parameter values should be obtained from the patient's physician, nurse and other professional clinician, such as that the patient's blood pressure should be between 130/85 and 110/75 or the patient's blood glucose should not exceed 200 mg/dI or drop below 40 mg/dI.
21 5. Whether or not the patient wants to receive reminders, such as from a beeper, and from which of the monitored devices. Also, when does the patient want to receive such reminders, e.g., remind patient to measure blood glucose level 25 minutes before the meal and remind to him/her to take medications 15 minutes after each meal but do not remind at breakfast time on weekends because patient wishes to sleep late.
6. Provide personal information such as age, date of birth, living arrangement, i.e., alone or with spouse or with adult child or closest relatives. Specify their names and contact information, who to call in an emergency, payment information such as a credit card, disabilities or other conditions that affect the activities of daily living, such as, that the patient has poor vision or walks with a cane, and also any familiar details that may be used by M-C operator to generate rapport such as the fact that the patient likes chocolate, has a six year old grandson named Bob, listens to classical music, has a dog named Spot, and whose favorite color is blue.
7. Which pharmacy or drugstore usually fills orders for medications, supplies such as blood glucose test strips and the like, including contact information for the pharmacy such as address, phone number, facsimile number and e-mail address.
8. Detailed physician, nurse and other professional clinician's information including contact information for the clinicians such as address, phone, fax and e-mail.
9. Inventory information for medications and supplies. The initial inventory may include such details as 12 tablets of medication A, 22 capsules of medication B, three I Occ vials of insulin, and a count of all other remaining medications. Other inventory details may include supplies such as 17 syringes, 20 needles, 35 blood glucose test strips, etc. 10. What are typical purchase quantities for medications and supplies. Syringes are typically packed in boxes of 100 units, blood glucose test strips in vials of 50, medications are dispensed in 30 day supply, etc. After the initial setup, the setup data is stored on the server with the patient event data history. The inventory information is used as the baseline value and after the patient takes a pill or uses a disposable supply, the number remaining is appropriately decreased.
22 Certain flagged values for minimum level of inventory are applied, such as a minimum of two weeks medications and supplies. When the flagged value is reached, the server automatically adds that item to the shopping list. When a purchase is confirmed, the server automatically increments the number of units in inventory.
Other flagged values pertain to personal information, such as a birthday. For example, if the patient's grandson is having a birthday in two weeks the server will put a reminder for a birthday card on the shopping list.
io Other flagged values pertain to supplies, such as syringes, blood glucose monitoring strips, and other supplies that are associated with a measured health parameter or monitored behavior parameter.
In this manner, the measuring of health parameters and the monitoring of behavior parameters drives the generation of a shopping list. This list may be printed out and taken to the drugstore or it may be the basis for an electronically fulfilled order, as illustrated in Figure 9. Further, the list may serve as the basis for a competitive marketing tool in which various manufacturers provide incentives or inducements to the patient to purchase one brand over another. For example, when the need for aspirin has been identified by monitoring that the patient has a higher than normal body temperature, the medication is placed on the shopping list. This, in turn, may trigger a flag to provide the patient with coupons for a discount on one brand of the medication. The provision of the coupon serves as an incentive to the patient. The M-C operator may view the shopping list before or during the creation of the video message so that appropriate references and reminders may be put into the video. The M-C operator may also mention specials, incentives and other available discounts during the video message.
Lastly, the M-C operator may manually add or remove items from the list, such as when a patient has been taken off a medication by the physician. Also, items which are prescribed for intermittent use may be manually or automatically added or removed from the list, for 23 example: when a patient develops a fever and it is detected by a health parameter measuring device, the server may automatically add aspirin to the shopping list.
The interactive report may further include an invitation to reply to any questions posed by the clinician image, or to pose new questions to the clinician image, or to respond to previous questions posed by the patient to the clinician image. Additionally, the clinician image may suggest that the patient replay the video message to reinforce an understanding of its contents. The use of interactive reports as defined herein is considered novel in the present field, so as to distinguish over the prior art.
The following charts define: the preferred manner in which the video reports (screens) are created, preferred screen content, how the screens are used and preferred follow-up action.
Please note the use of B-S representing "base station 20" and M-C representing "remote monitoring station 30."
How The Video Screens Are Created Capture health event data (eg., pill bottle access times, blood pressure, etc.) Transmit to B-S and store At predetermined time, forward to M-C and store on Event Record Server Merge and associate health event data with prior patient event data history and patient records Delete any duplicate entries At predetermined time, M-C operator accesses event record server and retrieves patient specific information 24 M-C operator views patient specific information including most recent entries. historical entries, supply and refill status, other pertinent patient specific information. Viewing is preferably done graphically with concurrent charts displayed on screen.
40 M-C operator views patient specific information including most recent entries. historical entries, supply and refill status, other pertinent patient specific information. Viewing is preferably done graphically with concurrent charts displayed on screen.
41 M-C operator activates camera and microphone, preferably mounted on top of monitor (this way operator can speak while viewing patient information).
M-C operator dictates video message into camera and microphone.
Video message has components of information that preferably may include any or all of the following:
44 1. Familiar commentary (i.e., patient name, recognition of chronic condition, recognition of other household members or pets, mention of hobbies, etc.) as may be necessary to generate rapport, 2. Clinical review of graphical record, including specific reference to the concurrent health trend and behavior trend graphics displayed, such graphical records may automatically update as the clinician records the video by pressing the appropriate menu options (ix, graphical record changes from blood pressure to blood glucose as clinician commentary progresses), 3. Health parameter trend information review (e.g., blood glucose), 4. Behavioral parameter trend information review (e.g., medication compliance rate), 5. Positive Behavioral Reinforcement Statements,
5.1. recognition of good behavior, 5.2. encouragement to use good behavior, 5.3. reminders of goals (e.g., lower blood pressure 10 points) 5.4. reprimand if not using good behavior, and/or 5.5. reinforcement to use good behavior, 6. Educational information, 6.1. How devices work, 6.2. Drug and side-effect information, 6.3. Drug and health benefit information, 6.4. Other educational items or referrals to items as may be deemed clinically or socially effective, 7. Purchasing information, suggestions, clues and recommendations, as may be needed, based ypon the patient record:
7.1. Drug refills, 26 7.2. Additional monitored devices (e.g., extra pill bottle), 7.3. Device supply refills (e.g., glucose monitoring strips), 7. 4. Other medical supply refills (e.g., wound dressings and disinfectants), 7. 5. Soft goods, 7.5.1. flowers and candy to cheer patient, 7.5.2. Books, music, games, and videos (to pass the time while convalescing), 7.6. Other items as may be needed or recommended to enhance the compliance of the patient with the health program, 7.7. Discounts, incentives or other promotions on needed merchandise or supplies.
8. Acknowledgement and reply to prior patient or family caregiver inquiries.
9. Recommendation to contact clinician, M-C operator, or other authoritative figure if any questions exist.
10. Recommendation to replay video at least once.
M-C operator presses "stop recording" button after completing message.
44 M-C operator optionally reviews message and re-records if changes are necessary 44 M-C operator forwards video message and associated graphical charts to Web-server for storage Web-server receives video message and associated graphical charts. Automatically saves in web-or WebTV-, or other multimedia format.
44 Web-server transfers formatted video message and associated graphical charts to patient or other viewer upon receiving password access from a remotely located web browser.
40 27 Optionally, the Web-server may be programmed to send an automatic e-mail notification to patient, caregiver and/or clinician that an updated video report is available.
How The Video Messame Screens Are Used Patient or family caregiver (referred to as the "Viewing Person") decides to check on patient status. The decision is based upon occurrence of a predetermined time to check on status, or a reminder received from M-C, or a change in patient's status, or curiosity 10 or initiative.
Viewing Person uses regular PC with internet browser, WebTV, or other commonly known viewing device to access the M-C Web server.
Viewing Person enters ID code and password Viewing Person sees patient report including graphical information.
Viewing Person presses "Play Video" button to start video message playback.
44 "Play Video" button changes to say "Replay Video".
Video message starts playing.
Optionally, Viewing Person presses "Replay Video" button to start video message playback.
Video message starts playing.
44 28 Viewing Person presses "Place Orders" button to order suggested supplies and refills. (Alternatively, for Viewing Persons without an electronic fulfillment account, the list of suggested supplies and refills may be printed as a shopping list.) Viewing Person sees list of supplies and refills. Confirms which to send. Presses "Confirm Order" button. Button changes to say "Order will be sent". (Alternatively, for Viewing Persons without an electronic fulfillment account, a printed version of the shopping list may be carried to a retail drugstore or other retail establishment to obtain the needed medications and supplies. The printed version of the list may also include incentives,
such as discount coupons to encourage the purchase of needed items at a given retail location or from a selected manufacturer. (Viewing Persons without an electronic fulfillment account may skip the next two steps.)) "Confirm Order" button changes to say "Order will be sent".
+ After 5 seconds, Viewing Person is automatically returned to report page (with graphic reports and video message).
Viewing Person presses "Contact Nurse" button.
40 As is well-known in the art, Viewing Person then sees window for outgoing e-mail (however, other outgoing message windows, such as a "create outgoing video message" window may be used for Viewing Persons with a video camera attached to their viewing device).
+ Viewing Person composes message which is sent to M-C (or other authoritative party) and presses "send message" button, as is well-known in the art.
How The Pill Bottle Screen Is Used 29 Patient or family caregiver (referred to as the "Viewing Person") decides to check on patient status. The decision is based upon occurrence of a predetermined time to check on status, or a reminder received from M-C, or a change in patient's status, or curiosity or initiative.
40 Viewing Person uses regular PC with internet browser, WebTV, or other commonly known viewing device to access the M-C Web server.
Viewing Person enter ID code and password + Viewing Person enters data into blanks for setting reminders, frequency of medication administration, Pill Bottle ID code, and other items as requested.
Data for reminders, frequency of medication administration, Pill Bottle ID code, and other items is automatically relayed to M-C Web server.
41 Data for reminders, frequency of medication administration, Pill Bottle ID code, and other items is automatically merged with patient's information database on the Event Record Server.
+ Viewing Person receives text message from M-C Web server:
"The next time the Base Station contacts us, we will download the new medication schedule."
Viewing Person moves on to other screens, such as the Concurrent Graphs and Video Message Report Screen B-S Communication With The M-C Data from the B-S is automatically uploaded to Event Record Server.
When complete, new schedule data from the Event Record Server is automatically downloaded to the B-S.
B-S automatically disconnects when transfer is complete.
B-S generates "beep" and visual signal indicating that new schedule information has been received + B-S generates visual indicator for which device(s) it has a new schedule.
Patient or family caregiver uses data transfer means, either wireless, wave energy or hardwire, to effectuate a link between the device(s) and the B-S.
+ B-S senses the link and automatically transfers data to the appropriate device(s). The unique ID codes prevent the wrong schedule from being loaded into the wrong device.
After completing data transfer, the link is disconnected.
-40 Patient uses device(s) as directed.
From the diagrams above it is seen that the present invention provides for a method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
a) automatic logging of health event data from dispensing devices and/or medical state measurement devices, into a storage means at the time of such events as enabled by actions of a patient or a patient with the help of a caregiver usually in the patient's home; 31 b) automatic transmitting of the health event data to a local base station for storage therein, the base station being generally in the patient's home; c) automatic transmitting of the health event data on a predetermined schedule to a remote monitoring center for storage therein, the center being located outside the patient's home and usually in a distant location, possibly near a hospital or doctor's office; d) automatic merging of each new transmission of the event data with an existing record of all previously recorded event data from the same base station; e) deleting duplicate entries of the event data; 0 retrieving the event data as an event data report comprising charts. graphs, etc.; g) medical personnel evaluating of the event data report; h) medical personnel recording of comments concerning the event data report, the comments comprising familiar commentary, clinical review of graphical records, health parameter trend information, behavioral parameter trend information, positive behavioral reinforcement,
educational information, purchasing information, suggestions, clues and recommendations, acknowledgements and replies, and recommendations; i) transmitting or sending the recorded comments of step (h) to storage for saving in multimedia forniat; and j) sending the recorded comments of step (i) to the caregiver upon his/her demand.
k) caregiver viewing of the recorded comment and lists of alternative supplies and refills; 1) caregiver placing orders for suggested supplies and refills of medications (or printing a shopping list with incentives for ftilfillment) ; and in) caregiver sending an electronic message to a medical personnel.
Clearly, the above apparatus and method is facilitated by wireless communication, land line wire based communication and networked communication methods of well known types such as radio, telephone and Internet links, hook-ups, and other enablements.
32 As an example of the type of prerecorded information presented in a medical consultation style the following is presented. This video report would, in the present context, be viewed by a home caregiver, but might also be viewed by the patient him/herself or by both the caregiver and the patient. Referring to Figure 8. the video message for this patient record may be conducted as follows:
"Hello Bob, this is Nurse Brown from Remote Medical. Please wish your mother a happy birthday for me. I see that she is going to turn 80 later this week. I've reviewed your mother's compliance and vital signs reports. In the first half of the month your mother lo was very good about taking her medications and her blood glucose level was stable. You can see this on the graph just to the left. But then she went through a period in which she missed her medications and the blood glucose level rose too high and went into the red zone. She seems to be back on track right now. We know that your mother lives alone, so here's what I recommend that you do to help her. Review this chart with your mother and show her how the missed medications affected the blood glucose level. Then have her view the Patient Education Videos for Medication Compliance and Blood Glucose Levels on her WebTV. You can find the videos on the Patient Education page. I also looked at your mother's blood pressure readings. I don't think that the cuff is being put on the arm correctly. I also want you to sit down with her and review the on-line video that shows how this is done with her. Make sure that she can use the blood pressure monitor correctly on her own. Then we can track her blood pressure just like we've been tracking the blood glucose. I also looked at the images of the small ulcer on your mother's leg. It looks like its beginning to heal. Keep it clean and apply the ointment your doctor prescribed. It will probably take a few more weeks to fully heal. Let's see...
your mother's file also indicates that she used her Emergency Alert Button once last week. We called her within 2 minutes and she told us that it was a false alarm. She had accidentally pressed the button while getting dressed. So we didn't notify you or your sister. This type of false alarm is very common and not a problem for us. Please be assured that we are monitoring her 24 hours a day. If she presses the Alert Button and anything is wrong, we will call you and the other people on the contact list immediately. Lastly, you need to purchase some additional supplies. It's been 30 days since your 33 mother refilled her medications. Also, my computer is telling me that she only has enough Glucose Monitoring Strips for another 10 days. I recommend that you order 2 more boxes. Please press the "Place Order" button directly below me and authorize us to send her more medication and supplies. We can ship everything immediately. Also, if you would like, we can send your mother some flowers on her birthday with a card from you. You can optionally order this from the Refill and Supply page. If you have any questions, press the contact nurse button directly below me and send us an e-mail. Someone will get back to you within the hour. Bob, I know that we have covered a lot of ground in this report today. I encourage you to press the replay button directly below me and go through the list of items at least one more time. We know that you're very concerned about your mother's health. You're doing a good job of caring for her. Let us know if we can help. Good bye."
It is clear that the above apparatus and method of communication is effective, surpassing audio only, or written communication methods in its ability to provide not only factual matter, but, quite importantly, in its ability to motivate to action. The message may be played over if necessary to further obtain information not understood, or simply missed on the previous playing.
While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: REMOTE MEDICAL CORPORATION,US | | Assignee/Applicant First: REMOTE MEDICAL CORPORATION,US | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: REMOTE MEDICAL CORPORATION | | Assignee - Original w/address: REMOTE MEDICAL CORPORATION,US | | Assignee Count: 1 | | Inventor: BROWN, Eric, W. | LITTLEFIELD, James, A. | CONNAUGHTON, Mark, F. | HUANG, Jay, Q. | XIE, Xiaohuo | | Inventor First: BROWN, Eric, W. | | Inventor - Original: BROWN, Eric, W. | LITTLEFIELD, James, A. | CONNAUGHTON, Mark, F. | HUANG, Jay, Q. | XIE, Xiaohuo | | Inventor - w/address: BROWN Eric W.,US | LITTLEFIELD James A.,US | CONNAUGHTON Mark F.,US | HUANG Jay Q.,US | XIE Xiaohuo,US | | Inventor Count: 5 | | Attorney/Agent: SCOTT, Gene | | Attorney/Agent - w/Address: SCOTT Gene|Patent Law & Venture Group, Suite K-105, 3151 Airway Avenue, Costa Mesa, CA 92626-4613, US | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: WO | | Publication Kind Code: A2 | | Publication Date: 2001-10-11 | | Publication Month: 10 | | Publication Year: 2001 | | Application Number: WO2000US40862A | | Application Country: WO | | Application Date: 2000-09-10 | | Application Month: 09 | | Application Year: 2000 | | Application with US Provisional: WO2000US40862A | 2000-09-10 | | Priority Number: US2000542586A | | Priority Country: US | | Priority Date: 2000-04-04 | | Priority Date - Earliest: 2000-04-04 | | Priority Month: 04 | | Priority Year(s): 2000 | | Earliest Priority Year: 2000 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B00050205, G06F001900, A61B000500, A61B0005022 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B00050205
| A
| A61
| A61B
| A61B0005
| A61B00050205
|
G06F001900
| G
| G06
| G06F
| G06F0019
| G06F001900
|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
A61B0005022
| A
| A61
| A61B
| A61B0005
| A61B0005022
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
Current
Current
Current
| G06F 19/322
A61B 5/02055
A61B 5/7435
G06F 19/324
G06F 19/3418
G06F 19/3456
G06F 19/3487
| A61B 5/0002
A61B 5/022
A61B 5/14532
| 20130101
20130101
20130101
20130101
20130101
20130101
20130101
| EP
EP
EP
EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: G06F001932C, A61B00050205B, A61B000574D6, G06F001932E, G06F001934C, G06F001934L, G06F001934P, K61B000500B, K61B0005022, K61B0005145G | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US5950632A
| 1999-09-14
| Reber William L.
| MOTOROLA INC
| X
| 0 (Examiner)
|
| Title: Medical communication apparatus, system, and method |
| |
US6259355B1
| 2001-07-10
| Chaco John
| ELOT INC
| YE
| -
|
| Title: Patient care and communication system |
| |
US5553609A
| 1996-09-10
| Chen Yaobin
| VISITING NURSE SERVICE INC
| Y
| 0 (Examiner)
|
| Title: Intelligent remote visual monitoring system for home health care service |
| |
US5827180A
| 1998-10-27
| Goodman David F.
| LIFEMASTERS SUPPORTED SELFCARE
| Y
| 0 (Examiner)
|
| Title: Method and apparatus for a personal health network |
| |
| | Count of Cited Refs - Patent: 4 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
EP1550063A2
| 2005-07-06
| HEXALOG SA
|
EP1733677A1
| 2006-12-20
| ROCHE DIAGNOSTICS GMBH
|
EP1733678A1
| 2006-12-20
| ROCHE DIAGNOSTICS GMBH
|
EP1733678B1
| 2012-02-29
| ROCHE DIAGNOSTICS GMBH
|
US6717598B1
| 2004-04-06
| AGILENT TECHNOLOGIES INC
|
US6879970B2
| 2005-04-12
| INVIVODATA INC
|
US7695677B2
| 2010-04-13
| ROCHE DIAGNOSTICS OPERATIONS
|
US7873589B2
| 2011-01-18
| INVIVODATA INC
|
US7996245B2
| 2011-08-09
| ROCHE DIAGNOSTICS OPERATIONS
|
US8065180B2
| 2011-11-22
| HUFFORD MICHAEL
|
US8112390B2
| 2012-02-07
| GEJDOS IGOR
|
US8145519B2
| 2012-03-27
| HUFFORD MICHAEL
|
US8365065B2
| 2013-01-29
| ROCHE DIAGNOSTICS OPERATIONS
|
US8380531B2
| 2013-02-19
| INVIVODATA INC
|
US8433605B2
| 2013-04-30
| HUFFORD MICHAEL
|
US8533029B2
| 2013-09-10
| HUFFORD MICHAEL
|
US8566818B2
| 2013-10-22
| YOUNG MORRIS J
|
US8795169B2
| 2014-08-05
| COSENTINO LOUIS C
|
US8819040B2
| 2014-08-26
| BUCK SCHUYLER
|
US9003538B2
| 2015-04-07
| MARKISOHN DAVID BRADLEY
|
WO2009071194A1
| 2009-06-11
| ROCHE DIAGNOSTICS GMBH
|
WO2010068617A1
| 2010-06-17
| CARDIOCOM LLC
|
| | Count of Citing Patents: 22 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2004-06-15
| NENP
| -
|
| Description: NON-ENTRY INTO THE NATIONAL PHASE IN: JP |
| |
2003-05-14
| 122
| -
|
| Description: EP: PCT APP. NOT ENT. EUROP. PHASE |
| |
2002-09-12
| REG
| -
|
| Description: REFERENCE TO NATIONAL CODE DE 8642 IMPACT ABOLISHED FOR DE - I.E. PCT APPL. NOT ENT. GERMAN PHASE |
| |
2001-12-05
| 121
| -
|
| Description: EP: THE EPO HAS BEEN INFORMED BY WIPO THAT EP WAS DESIGNATED IN THIS APPLICATION |
| |
2001-10-11
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0174229 A2 GH; GM; KE; LS; MW; MZ; SD; SL; SZ; TZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2001-10-11
| AK
| +
|
| Description: DESIGNATED STATES WO 0174229 A2 AE; AG; AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; BZ; CA; CH; CN; CR; CU; CZ; DE; DK; DM; DZ; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MA; MD; MG; MK; MN; MW; MX; MZ; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; TZ; UA; UG; UZ; VN; YU; ZA; ZW |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: XX N AE;AG;AL;AM;AT;AU;AZ;BA;BB;BG;BR;BY;BZ;CA;CH;CN;CR;CU;CZ;DE;DK;DM;DZ;EE;ES;FI;GB;GD;GE;GH;GM;HR;HU;ID;IL;IN;IS;JP;KE;KG;KP;KR;KZ;LC;LK;LR;LS;LT;LU;LV;MA;MD;MG;MK;MN;MW;MX;MZ;NO;NZ;PL;PT;RO;RU;SD;SE;SG;SI;SK;SL;TJ;TM;TR;TT;TZ;UA;UG;UZ;VN;YU;ZA;ZW | EP R AT;BE;CH;CY;DE;DK;ES;FI;FR;GB;GR;IE;IT;LU;MC;NL;PT;SE | OA R BF;BJ;CF;CG;CI;CM;GA;GN;GW;ML;MR;NE;SN;TD;TG | AP R GH;GM;KE;LS;MW;MZ;SD;SL;SZ;TZ;UG;ZW | EA R AM;AZ;BY;KG;KZ;MD;RU;TJ;TM | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
WO2001074229A2
| 20011011
| BROWN Eric W.
| REMOTE MEDICAL CORP
|
| Title: APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
AU200118183A
| 20011015
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Apparatus and method for improving patient compliance with a medical program |
| |
WO2001074229A3
| 20020502
| XIE Xiaohuo
| REMOTE MEDICAL CORP
|
| Title: IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2001074229A2&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2001074229A2&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 13/43 | | WO2000002478A3 | HYDRAULIC SURGICAL SYSTEM | SYSTEME CHIRURGICAL HYDRAULIQUE | | Publication Number: WO2000002478A3 | | Title: HYDRAULIC SURGICAL SYSTEM | SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (Original): SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (English): HYDRAULIC SURGICAL SYSTEM | | Title (French): SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (German): | | Title (Spanish): | | Title - DWPI: | Abstract:
A system which produces movement of a surgical device based on applied hydraulic fluid. A piston with a fixed wiper, and movable outer housing transmits its motion, caused by hydraulic pressure, to the surgical device, located remotely. The pressure is produced by stepper motors which drive syringes to produce the pressure.
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | Abstract (English):
A system which produces movement of a surgical device based on applied hydraulic fluid. A piston with a fixed wiper, and movable outer housing transmits its motion, caused by hydraulic pressure, to the surgical device, located remotely. The pressure is produced by stepper motors which drive syringes to produce the pressure. | Abstract (French):
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | | Abstract (German): | Abstract (Original):
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: MICRO MEDICAL DEVICES INC | | Assignee/Applicant First: MICRO MEDICAL DEVICES INC | | Assignee - Standardized: MICRO MEDICAL DEVICES INC | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | GUST GARY | CONNAUGHTON MARK | XIE JOSEPH | HUANG JAY | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | GUST GARY | CONNAUGHTON MARK | XIE JOSEPH | HUANG JAY | | Inventor Count: 5 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: WO | | Publication Kind Code: A3 | | Publication Date: 2000-04-13 | | Publication Month: 04 | | Publication Year: 2000 | | Application Number: WO1999US15515A | | Application Country: WO | | Application Date: 1999-07-08 | | Application Month: 07 | | Application Year: 1999 | | Application with US Provisional: WO1999US15515A | 1999-07-08 | | Priority Number: US1998113854A | | Priority Country: US | | Priority Date: 1998-07-10 | | Priority Date - Earliest: 1998-07-10 | | Priority Month: 07 | | Priority Year(s): 1998 | | Earliest Priority Year: 1998 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B001732, A61M002501, A61B0001317, A61B001700, A61B001900 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B001732
| A
| A61
| A61B
| A61B0017
| A61B001732
|
A61M002501
| A
| A61
| A61M
| A61M0025
| A61M002501
|
A61B0001317
| A
| A61
| A61B
| A61B0001
| A61B0001317
|
A61B001700
| A
| A61
| A61B
| A61B0017
| A61B001700
|
A61B001900
| A
| A61
| A61B
| A61B0019
| A61B001900
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 25/0105
A61B 17/320016
| A61B 1/317
A61B 2017/00539
A61B 2017/00977
A61B 2019/308
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B001732E, A61M002501C, K61B0001317, K61B001700N2, K61B001700V2, K61B001930J | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
WO1993002613A1
| 1993-02-18
| PHAN Cu Ngoc
| UNIV CALIFORNIA
| A
| -
|
| Title: ENDOSCOPIC DEVICE ACTUATOR AND METHOD |
| |
GB2306111A
| 1997-04-30
| Hart William Barrie
| HART WILLIAM BARRIE
| X
| -
|
| Title: Expandable hydraulic oversleeve for advancing an endoscope into a body cavity |
| |
WO1995027443A1
| 1995-10-19
| -
| EDELL IRA C
| Y
| -
|
| Title: DEVICE FOR REMOVAL OF INTRALUMINAL OCCLUSIONS |
| |
WO1996026696A1
| 1996-09-06
| GIUNGO John
| PHOTOGENESIS INC
| A
| -
|
| Title: MEDICAL LINEAR ACTUATOR FOR SURGICAL DELIVERY, MANIPULATION, AND EXTRACTION |
| |
US4708125A
| 1987-11-24
| Miketic Sinisa
| STORZ KARL GMBH & CO
| A
| -
|
| Title: Apparatus for controlling a probe of an endoscopy device |
| |
US3763864A
| 1973-10-09
| Dremann George H.
| DREMANN G
| Y
| -
|
| Title: POWERED RESECTOSCOPE |
| |
| | Count of Cited Refs - Patent: 6 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-01-09
| 122
| -
|
| Description: EP: PCT APP. NOT ENT. EUROP. PHASE |
| |
2001-05-17
| REG
| -
|
| Description: REFERENCE TO NATIONAL CODE DE 8642 IMPACT ABOLISHED FOR DE - I.E. PCT APPL. NOT ENT. GERMAN PHASE |
| |
2000-04-13
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0002478 A3 GH; GM; KE; LS; MW; SD; SL; SZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2000-04-13
| AK
| +
|
| Description: DESIGNATED STATES WO 0002478 A3 AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; CA; CH; CN; CU; CZ; DE; DK; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MD; MG; MK; MN; MW; MX; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; UA; UG; UZ; VN; YU; ZW |
| |
2000-04-06
| DFPE
| -
|
| Description: REQUEST FOR PRELIMINARY EXAMINATION FILED PRIOR TO EXPIRATION OF 19TH MONTH FROM PRIORITY DATE (PCT APPLICATION FILED BEFORE 20040101) |
| |
2000-03-15
| 121
| -
|
| Description: EP: THE EPO HAS BEEN INFORMED BY WIPO THAT EP WAS DESIGNATED IN THIS APPLICATION |
| |
2000-01-20
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0002478 A2 GH; GM; KE; LS; MW; SD; SL; SZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2000-01-20
| AK
| +
|
| Description: DESIGNATED STATES WO 0002478 A2 AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; CA; CH; CN; CU; CZ; DE; DK; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MD; MG; MK; MN; MW; MX; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; UA; UG; UZ; VN; YU; ZW |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: AP R GH;GM;KE;LS;MW;SD;SL;SZ;UG;ZW | EA R AM;AZ;BY;KG;KZ;MD;RU;TJ;TM | EP R AT;BE;CH;CY;DE;DK;ES;FI;FR;GB;GR;IE;IT;LU;MC;NL;PT;SE | OA R BF;BJ;CF;CG;CI;CM;GA;GN;GW;ML;MR;NE;SN;TD;TG | XX N AL;AM;AT;AU;AZ;BA;BB;BG;BR;BY;CA;CH;CN;CU;CZ;DE;DK;EE;ES;FI;GB;GD;GE;GH;GM;HR;HU;ID;IL;IN;IS;JP;KE;KG;KP;KR;KZ;LC;LK;LR;LS;LT;LU;LV;MD;MG;MK;MN;MW;MX;NO;NZ;PL;PT;RO;RU;SD;SE;SG;SI;SK;SL;TJ;TM;TR;TT;UA;UG;UZ;VN;YU;ZW | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: XX | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
WO2000002478A3
| 20000413
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
AU199949792A
| 20000201
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: Hydraulic surgical system |
| |
WO2000002478A2
| 20000120
| BROWN Eric W.
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
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| Record 14/43 | | CA1264261C | MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Publication Number: CA1264261C | | Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (Original): MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (English): MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | | Title (French): PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (German): | | Title (Spanish): | | Title - DWPI: | Abstract:
ABSTRACT OF THE DISCLOSURE A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | Abstract (English):
ABSTRACT OF THE DISCLOSURE A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (French): | | Abstract (German): | Abstract (Original):
ABSTRACT OF THE DISCLOSURE A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (Spanish): | Claims:
THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A multiple needle holder comprising: a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face; a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and means extending outwardly from said housing wall for engaging a locking mechanism.
2. The needle holder of Claim 1 wherein said means for engaging a locking mechanism comprises a flange extending outwardly from said housing wall.
3. The needle holder of Claim 1 wherein each of said plurality of needles is curved.
4. The needle holder of Claim 1 wherein the rear face of said housing is perpendicular to the front face of said housing.
5. A multiple channel infusion port comprising: a housing including a housing wall and a base; a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face; a plurality of isolated chambers adjacent the inner face of said septum; a sealing wall separating each of said isolated chambers from one another; and a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
6. The mutliple channel infusion port of claim 5 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
7. The multiple channel infusion port of claim 5 further comprising slot means in the base of said housing for enabling sutures to be applied therethrough.
8. The multiple channel infusion port of claim 5 wherein said housing includes a top portion having solid portions overlying said sealing wall and openings superimposed over said chambers.
9. A multiple needle holder and infusion port comprising: a housing having a rear face and a front face, a plurality of needles secured within said housing and extending from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers.
10. The multiple needle holder and infusion port of claim 9 wherein said infusion port includes a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
11. The multiple needle holder and infusion port of claim 10 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
12. The multiple needle holder and infusion port of claim 9 further comprising slot means on said infusion port for enabling sutures to be applied therethrough.
13. The multiple needle holder and infusion port of claim 9 wherein the rear face of said housing is perpendicular to the front face of said housing. | | Claims Count: 13 | Claims (English):
THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A multiple needle holder comprising: a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face; a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and means extending outwardly from said housing wall for engaging a locking mechanism.
2. The needle holder of Claim 1 wherein said means for engaging a locking mechanism comprises a flange extending outwardly from said housing wall.
3. The needle holder of Claim 1 wherein each of said plurality of needles is curved.
4. The needle holder of Claim 1 wherein the rear face of said housing is perpendicular to the front face of said housing.
5. A multiple channel infusion port comprising: a housing including a housing wall and a base; a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face; a plurality of isolated chambers adjacent the inner face of said septum; a sealing wall separating each of said isolated chambers from one another; and a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
6. The mutliple channel infusion port of claim 5 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
7. The multiple channel infusion port of claim 5 further comprising slot means in the base of said housing for enabling sutures to be applied therethrough.
8. The multiple channel infusion port of claim 5 wherein said housing includes a top portion having solid portions overlying said sealing wall and openings superimposed over said chambers.
9. A multiple needle holder and infusion port comprising: a housing having a rear face and a front face, a plurality of needles secured within said housing and extending from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers.
10. The multiple needle holder and infusion port of claim 9 wherein said infusion port includes a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
11. The multiple needle holder and infusion port of claim 10 further comprising a multilumen catheter, each lumen of said catheter being in communication with one of said access tubes.
12. The multiple needle holder and infusion port of claim 9 further comprising slot means on said infusion port for enabling sutures to be applied therethrough.
13. The multiple needle holder and infusion port of claim 9 wherein the rear face of said housing is perpendicular to the front face of said housing. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multiple needle holder comprising: a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face; a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and means extending outwardly from said housing wall for engaging a locking mechanism. | Independent Claims:
1. A multiple needle holder comprising: a housing having a housing wall surrounding a plurality of conduits extending from a rear face on said housing to a front face; a plurality of needles secured within said housing so that each of said needles is in communication with one of the said conduits, said needles extending outwards from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said conduits, said engagement ports being arranged so as to be matingly aligned with a plurality of ports on a multilumen catheter connector; and means extending outwardly from said housing wall for engaging a locking mechanism.
5. A multiple channel infusion port comprising: a housing including a housing wall and a base; a penetrable self-sealing septum held within said housing and having an outer face adjacent at least one opening in said housing and an inner face on the opposite side of said septum from said outer face; a plurality of isolated chambers adjacent the inner face of said septum; a sealing wall separating each of said isolated chambers from one another; and a plurality of access tubes each in communication with one of said isolated chambers for conducting fluid out of the isolated chambers.
9. A multiple needle holder and infusion port comprising: a housing having a rear face and a front face, a plurality of needles secured within said housing and extending from the front face of said housing; a plurality of engagement ports on the rear face of said housing each having an opening in communication with one of said needles; and an infusion port having a plurality of isolated chambers beneath a self-sealing septum such that when the needles of said needle holder penetrate through said septum each needle is in communication with a different one of said chambers. | | Description: | | Assignee/Applicant: I-FLOW CORPORATION,US | BROWN ERIC W. | | Assignee/Applicant First: I-FLOW CORPORATION,US | | Assignee - Standardized: | | Assignee - Original: I-FLOW CORPORATION | BROWN ERIC W. | | Assignee - Original w/address: I-FLOW CORPORATION,US | BROWN ERIC W. | | Assignee Count: 2 | | Inventor: BROWN, ERIC W. | | Inventor First: BROWN, ERIC W. | | Inventor - Original: BROWN, ERIC W. | | Inventor - w/address: BROWN ERIC W. | | Inventor Count: 1 | | Attorney/Agent: MACRAE & CO. | | Attorney/Agent - w/Address: MACRAE & CO. | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: CA | | Publication Kind Code: C | | Publication Date: 1990-01-09 | | Publication Month: 01 | | Publication Year: 1990 | | Application Number: CA532537A | | Application Country: CA | | Application Date: 1987-03-19 | | Application Month: 03 | | Application Year: 1987 | | Application with US Provisional: CA532537A | 1987-03-19 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000532, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000532
| A
| A61
| A61M
| A61M0005
| A61M000532
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A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
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| | Any CPC Table: | | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | | INPADOC Family Table: | | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=CA1264261C_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=CA1264261C_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 15/43 | | US20030046090A1 | Personalized health video system | | Publication Number: US20030046090A1 | | Title: Personalized health video system | | Title (Original): Personalized health video system | | Title (English): Personalized health video system | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Personalized health care information system, for health maintenance to large subscriber base, has Internet website that provides healthcare guide using remote monitoring technology | Abstract:
A personalized health video system, method and apparatus which comprises the components of: a personal data collecting device, Internet enablement device, information system, video serving device, server operating system, user operating system, graphical creation device, viewing device, audio device, relationship generating device, script generating device, charts generating device, chart reviewing device, and video library device; the components arranged and interconnected and enabled in an operating personalized health video system. | Abstract (English):
A personalized health video system, method and apparatus which comprises the components of: a personal data collecting device, Internet enablement device, information system, video serving device, server operating system, user operating system, graphical creation device, viewing device, audio device, relationship generating device, script generating device, charts generating device, chart reviewing device, and video library device; the components arranged and interconnected and enabled in an operating personalized health video system. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A personalized health video system, method and apparatus which comprises the components of: a personal data collecting device, Internet enablement device, information system, video serving device, server operating system, user operating system, graphical creation device, viewing device, audio device, relationship generating device, script generating device, charts generating device, chart reviewing device, and video library device; the components arranged and interconnected and enabled in an operating personalized health video system. | | Abstract (Spanish): | Claims:
What is claimed is:
1. A personalized health video system, method and apparatus which comprises: the components of, a personal data collecting means, Internet enablement means, information system, video serving means, server operating system, user operating system, graphical creation means, viewing means, audio means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library means; the components arranged and interconnected and enabled in an operating personalized health video system.
2. A method for presenting personalized video programming for the purpose of selling medical supplies, the method functional through a data processing system, and comprising, for each of a plurality of selected patients, the steps of: reviewing patient specific data relevant to a selected patient; forming a medical appraisal concerning the supply needs of the selected patient based upon the patient specific data; forming a sales oriented communication objective; composing a video program based on the sales communication objective; posting and hosting the video program; enabling playback of the video program; and enabling follow-up actions motivated by the video program.
3. The method of claim 2 further comprising the step of enabling a trigger action performed by at least one of; a medical personnel, the selected patient, and a computer program, the trigger action motivating the step of reviewing of the patient specific data.
4. The method of claim 3 wherein the patient specific data is requested by the medical professional.
5. The method of claim 2 wherein the patient specific data includes patient vital signs and patient medical performance.
6. A medical information system comprising: patient specific data collecting devices; software enabling distributive network communications; a data storing means; a video streaming means; video show producing means; network data transmitting means; video show playback means; and patient specific data.
7. The system of claim 6 wherein the video show producing means is enabling for producing a graphical image show of selected and sequenced images.
8. The system of claim 7 further comprising means for simultaneous video displaying of the graphical image show, and related written commentary.
9. The system of claim 7 further comprising means for creating a stored relationship between the patient specific data and a graphical image show.
10. The system of claim 7 further comprising means for producing graphical representations of the patient specific data.
11. The system of claim 10 further comprising means for associating non-patient specific information in the graphical representations of the patient specific data.
12. The system of claim 6 further comprising means for creating a script for a video show.
13. The system of claim 6 further comprising automation means for creating video charts related to a patient specific data.
14. The system of claim 6 further comprising system and show editing means.
15. A personalized health video system apparatus which comprises: a personal data collecting means, Internet operations enabling means, information storing system, video serving means, server operating system, user operating system, graphics creating means, viewing means, audio producing means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library using means; the components arranged and interconnected and enabled in an operating personalized health video system. | | Claims Count: 15 | Claims (English):
What is claimed is:
1. A personalized health video system, method and apparatus which comprises: the components of, a personal data collecting means, Internet enablement means, information system, video serving means, server operating system, user operating system, graphical creation means, viewing means, audio means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library means; the components arranged and interconnected and enabled in an operating personalized health video system.
2. A method for presenting personalized video programming for the purpose of selling medical supplies, the method functional through a data processing system, and comprising, for each of a plurality of selected patients, the steps of: reviewing patient specific data relevant to a selected patient; forming a medical appraisal concerning the supply needs of the selected patient based upon the patient specific data; forming a sales oriented communication objective; composing a video program based on the sales communication objective; posting and hosting the video program; enabling playback of the video program; and enabling follow-up actions motivated by the video program.
3. The method of claim 2 further comprising the step of enabling a trigger action performed by at least one of; a medical personnel, the selected patient, and a computer program, the trigger action motivating the step of reviewing of the patient specific data.
4. The method of claim 3 wherein the patient specific data is requested by the medical professional.
5. The method of claim 2 wherein the patient specific data includes patient vital signs and patient medical performance.
6. A medical information system comprising: patient specific data collecting devices; software enabling distributive network communications; a data storing means; a video streaming means; video show producing means; network data transmitting means; video show playback means; and patient specific data.
7. The system of claim 6 wherein the video show producing means is enabling for producing a graphical image show of selected and sequenced images.
8. The system of claim 7 further comprising means for simultaneous video displaying of the graphical image show, and related written commentary.
9. The system of claim 7 further comprising means for creating a stored relationship between the patient specific data and a graphical image show.
10. The system of claim 7 further comprising means for producing graphical representations of the patient specific data.
11. The system of claim 10 further comprising means for associating non-patient specific information in the graphical representations of the patient specific data.
12. The system of claim 6 further comprising means for creating a script for a video show.
13. The system of claim 6 further comprising automation means for creating video charts related to a patient specific data.
14. The system of claim 6 further comprising system and show editing means.
15. A personalized health video system apparatus which comprises: a personal data collecting means, Internet operations enabling means, information storing system, video serving means, server operating system, user operating system, graphics creating means, viewing means, audio producing means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library using means; the components arranged and interconnected and enabled in an operating personalized health video system. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A personalized health video system, method and apparatus which comprises: the components of, a personal data collecting means, Internet enablement means, information system, video serving means, server operating system, user operating system, graphical creation means, viewing means, audio means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library means; the components arranged and interconnected and enabled in an operating personalized health video system. | Independent Claims:
1. A personalized health video system, method and apparatus which comprises: the components of, a personal data collecting means, Internet enablement means, information system, video serving means, server operating system, user operating system, graphical creation means, viewing means, audio means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library means; the components arranged and interconnected and enabled in an operating personalized health video system.
2. A method for presenting personalized video programming for the purpose of selling medical supplies, the method functional through a data processing system, and comprising, for each of a plurality of selected patients, the steps of: reviewing patient specific data relevant to a selected patient; forming a medical appraisal concerning the supply needs of the selected patient based upon the patient specific data; forming a sales oriented communication objective; composing a video program based on the sales communication objective; posting and hosting the video program; enabling playback of the video program; and enabling follow-up actions motivated by the video program.
6. A medical information system comprising: patient specific data collecting devices; software enabling distributive network communications; a data storing means; a video streaming means; video show producing means; network data transmitting means; video show playback means; and patient specific data.
15. A personalized health video system apparatus which comprises: a personal data collecting means, Internet operations enabling means, information storing system, video serving means, server operating system, user operating system, graphics creating means, viewing means, audio producing means, relationship generating means, script generating means, charts generating means, chart reviewing means, and video library using means; the components arranged and interconnected and enabled in an operating personalized health video system. | Description:
RELATED APPLICATIONS
[0001] 1
Provisional Healthcare Signal60/0705Jan. 06, 1998
Application Telemetry System21
Provisional Medical Device60/0716Jan. 16, 1998
Application Telemetry Accessory23
Provisional Wound Management60/0887Jun. 10, 1998
Application Medical Telemetry27
System
Patent Application Apparatus and Method09/2251Jan. 04, 1999
for Improving Patient 73
Compliance with a
Medical Program
Patent Application Method for Improving09/2666Mar. 11, 1999
Patient Compliance with 47
a Medical Program
Continuation-in- Method for Improving09/3222May 28, 1999
Part Patient Compliance with09
a Medical Program
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] This invention relates generally to interactive health care information systems and more particularly to a health care information system using wide area network communications and video presentations for improved health maintenance to a large subscriber base.
[0004] 2. Description of Related Art
[0005] The following art defines the present state of this field:
[0006] Kutzik et al, U.S. Pat. No. 5,692,215 describes a system that provides for monitoring a user in a user living area. The system includes a system controller and an activity detection subsystem. The activity detection subsystem monitors a daily living activity of the user and provides information representative of the daily living activity to the system controller. The system controller includes a control circuit which generates a control signal in response to the daily living activity information obtained by the activity detection subsystem. Control information from the system controller is applied by way of a control information communication channel both to the activity detection subsystem and to a remote monitoring site. The activity detection subsystem may be system for determining the movement of the user around the home, medication compliance by the user, problems with usage for stoves or other potentially dangerous appliances, and selected auxiliary appliances.
[0007] Lipscher, U.S. Pat. No. 4,082,084 describes a portable diagnostic device, particularly for medical field-examinations comprising a case-like housing in which replaceable electronic examining units are arranged serving for the examination of different physiological functions and/or conditions. The housing comprises an electronic power supply feeding each of the electronic examining units, a common display receiving the output signals of the examining units and electrical connectors providing electrical connections between the housing and each of the examining units. The inner room of the housing is divided into two separate parts, the first of which is arranged in a modular system and accommodates slide-in examining units, while the second part serves to accommodate the accessory means required for the examinations.
[0008] Fu, U.S. Pat. No. 4,803,625 provides for a personal health monitor which includes sensors for measuring patient weight, temperature, blood pressure, and ECG waveform. The monitor is coupled to a central unit via modems and includes a computer which is programmed to prompt a patient to take prescribed medication at prescribed times, to use the sensor to measure prescribed health parameters, and to supply answers to selected questions. Medication compliance information, test results, and patient answers are compiled in a composite log which is automatically transmitted to the central unit. The computer is also programmed automatically to disconnect the monitor from an alternating current power source and to rely on internal battery power during certain periods of patient monitor interaction, such as during use of the ECG module. In this way, danger to the patient and complexity of the ECG module are minimized. The computer is also programmed to compare measured test information with predetermined expected values, and in the event of a discrepancy, to collect additional information from the patient to assist trained personnel at the central unit in interpreting the composite log. The computer is also programmed to alert the central unit promptly in the event one or more measured parameters falls outside of a prescribed normal range. The normal range for a given parameter is made to vary in accordance with the measured value of one or more other parameters in order to reduce the incidence of false alarms.
[0009] Bornn et al., U.S. Pat. No. 4,827,943 provides a link between the caregiver and the subject being monitored which utilizes an intermediate base station with redundant signal paths between the base station and the caregiver. The caregiver wears a unit which receives signals from the base station. Signals from the base station provide information about the subject being monitored and provides signals for use in determining whether the caregiver remains within the range of the base station. The unit worn by the subject being monitored can include diagnostic circuitry for evaluating signals received from sensors to transmit an alarm signal to the base stations when the subject being monitored is in need of assistance. A range monitoring system is provided which alerts the subject being monitored as well as the caregiver whenever the subject being monitored moves outside the range of the base station.
[0010] Kaufman, U.S. Pat. No. 4,933,873 describes an interactive patient assistance device which houses both pre-selected doses of medication and a physical testing device. Both medication and the testing device are normally retained within separate compartments within the device away from access by the patient. The device keeps track of medication and diagnostic testing schedules. The device is also capable of receiving and interpreting verbal commands of the patient. The device makes a pre-selected dose of medication available to the patient in response to either the medication schedule or the receipt of a verbal command by the patient. Likewise, the testing device is made available to the patient in response either to the testing schedule or the receipt of a verbal command from the patient.
[0011] Treatch, U.S. Pat. No. 5,007,429 describes a user interface for directing the programming of operating parameters for patient blood pressure testing into and downloading blood pressure data from ambulatory patient blood pressure monitoring units. The user interface operates on a system comprising a plurality of microprocessor based, ambulatory blood pressure measuring patient units, an office control unit, and a data processing center, typically accessed over telephone lines. An office control unit is used to program patient units with test regimens for specific patients. The control units are also used to download data from the patient units and to transfer the data, along with patient identifying data, to the central data processing facility. The office control unit includes local memory which stores various interface routines, a microprocessor for executing the routines, a 12-character keypad allowing input of integers and a display for displaying prompts to the user. Upon initial power up of the control unit, and operator using the control unit is prompted through a start up sequence and a menu selection sequence to carry out the desired functions of the system. All selections are made, and all operating parameters are entered, through a telephone like keypad. The display indicates to the user which parameter entry of which is called for and which menu items are available for selection. During transfer of data to the central processing facility, additional prompts may be given to the operator by voice over the telephone handset.
[0012] Blomquist, U.S. Pat. No. 5,338,157 describes an invention relating to systems and methods for communicating with ambulatory medical devices, such as drug delivery devices, both locally and remotely. In one embodiment, a caregiver drug pump communicates with a remote patient drug pump for data gathering, trouble shooting, and operational program changes. The caregiver drug pump is at least substantially identical in configuration to the patient drug pump. The caregiver drub pump transmits caregiver key input signals to the remote patient drug pump. The patient drug pump receives the key input signals, accesses a desired program, and transmits information for display on the display of the caregiver drug pump. In another embodiment, a computer is provided for communicating locally and/or remotely with a drug pump. The computer may include a display with an image of a pump. The computer may be operated through the use of a mouse or touch screen with respect to the image of the pump, to simulate use of the pump while using the personal computer. The computer may also be used as a training aid for training a caregiver and/or patient how to use the drug pump.
[0013] Maestre, U.S. Pat. No. 5,347,453 describes a portable programmable medication device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the time occurrence of each programmed administration time, and audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
[0014] Stutman, U.S. Pat. No. 5,416,695 describes a medical alert system which enables an authorized user, such as a doctor, to remotely set selection and limit parameters pertaining to specific medical and geodetic information of an ambulatory patient and thereafter received updates of that information over a wireless communication network when the parameters have been met. A telemetry device attached to the patient provides an inbound stream of medical and geodetic information to a host computer, which is configured to exact selected portions of that information in response to the parameters provided by a remote processing device via a communications network. Upon completion of the latter process, the host computer transfers the extracted information to the remote processing device over the network, thereby informing the doctor of a medical situation.
[0015] Maestre, U.S. Pat. No. 5,495,961 describes a portable programmable medication alarm device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the timed occurrence of each programmed administration time, an audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route, and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
[0016] Vasko, U.S. Pat. No. 5,573,506 describes a remotely programmable infusion pump with interactive voice response via touch-tone phone (i.e., voice mail system in IV pump). The remotely programmable infusion system also comprises a voice storage unit for storing the voice signal. The remotely programmable infusion system further comprises a processor, coupled to the remote communication port, to the voice storage unit, and to the memory, for accessing the voice signal from the voice storage unit and the programmable protocol from the memory, and for processing the programmable protocol in response to receiving the remote programming signal.
[0017] Kurtenbach, U.S. Pat. No. 5,582,323 describes a medication dispensing and monitoring system of a present invention includes a housing containing a plurality of pill dispensing compartments for dispensing medication to a patient at a desired time. The invention is programmed to dispense medication at the desired time and activates alarms if the proper procedure is not completed. The invention also contacts the emergency personnel through phone lines and initiates two-way hands free communication between the patient and emergency personnel. The invention further includes a pendent transmitter worn by the patient to contact emergency personnel.
[0018] Hultman, U.S. Pat. No. 5,582,593 describes an ambulatory medication delivery system which includes an ambulatory pump unit having a computer control linear motor pump for pumping predetermined volumes of fluid in accordance with a programmed delivery schedule which may be altered through communication with a remote monitoring location via a telephone data access line or via radio frequency communication. A clinician communication unit and a patient communication unit receive and send information to the ambulatory pump unit and also communicate via a telephone data modem access to the computer at a remote monitoring location at which trained health personnel can monitor a number of patient locations and alter or change medication delivery profiles as required.
[0019] Tacklind, U.S. Pat. No. 5,704,366 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
[0020] Ridgeway, U.S. Pat. No. 5,710,551 describes a system for the remote monitoring of in-home self-medication to assure compliance with prescribed dosage schedules. The system comprises at least one subscriber home medication station which interfaces with a communications link and a remote central monitoring station also interfaced with the link and operative to receive and analyze messages transmitted by the home medication station. The preferred home medication station embodiment transmits messages to the central station over the communications link each time the home medication station is accessed for a dosage of medication. Central station computer means verify receipt of such signals within each subscriber's uniquely scheduled dosage time windows, and alert an operator to take appropriate action if a dosage schedule error is detected. Alternative home medication station embodiments utilize a built-in programmable timer module to verify accessing of medication within a subscriber's uniquely scheduled dosage time windows, and to initiate transmission of alarm signals to the central station over the communications link if dosage schedule errors are detected by the timer module. All embodiments provide subscribers with help-button means to initiate transmission of alarm messages to the central station over the communications link in event of adverse reaction to medication, or other emergencies. Since the central station will be alerted if any scheduled dosage is missed, no emergency rendering a subscriber unable to press a help-button or call for help can go undetected longer than the maximum time between consecutively scheduled dosages.
[0021] Tacklind, U.S. Pat. No. 5,752,709 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
[0022] Stoop, U.S. Pat. No. 5,767,791 describes a two-way telemetry system which displays and monitors physiologic and other patient data of multiple, remotely located patients at a central location. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and a central station which receives, displays, and monitors the patient data received from the remote telemeter. The telemeters communicate with the central station using a two-way TDMA protocol which permits the time sharing of timeslots, and which uses a contention slot to permit telemeters to transmit service requests to the central station. Two-way special diversity is provided using only one antenna and one transceiver on each remote telemeter. The remote telemeters include circuitry for turning off the active transceiver components thereof when not in use (to conserve battery power), and include circuitry for performing a rapid, low-power frequency lock cycle upon power-up. The system has multiple modes of operation, including a frequency hopping (spread spectrum) mode and a fixed frequency mode, both of which preferably make use of the 902-928 MHz ISM band. Patient locators are provided to allow the clinician to track the location of each patient.
[0023] Russo, U.S. Pat. No. 5,807,336 describes a medical apparatus that is provided with a programmable medical device disposed at a first room location and a remote monitor and/or controller disposed at a second room location. The programmable medical device is used to administer a medical treatment to a patient, and the remote monitor/controller may be used to monitor the operation of the medical device, control the operation of the medical device, and/or transfer data from the medical device to the remote monitor/controller. The apparatus may allow voice communication between the remote monitor/controller and the patient who is receiving treatment via the medical device while the medical device is being monitored and/or controlled from the remote location. The remote monitor/controller may also include means for determining the type of medical device to which it is connected.
[0024] Brudny et al., U.S. Pat. No. 5,810,747 describes an interactive intervention training system used for monitoring a patient suffering from neurological disorders of movement or a subject seeking to improve skill performance and assisting their training. A patient (or trainee) station is used in interactive training. The patient (or trainee) station includes a computer. A supervisor station is used by, for example, a medical or other professional. The patient (or trainee) station and the supervisor station can communicate with each other, for example, over the Internet or over LAN. The patient (or trainee) station may be located remotely or locally with respect to the supervisor station. Sensors collect physiologic information and physical information from the patient or subject while the patient or subject is undergoing training. This information is provided to the supervisor station. It may be summarized and displayed to the patient/subject and/or the supervisor. The patient/subject and the supervisor can communicate with each other, for example, via video, in real time. An expert system and neural network determine a goal to be achieved during training. There may be more than one patient (or trainee) station, thus allowing the supervisor to supervise a number of patients/subjects concurrently.
[0025] The present invention fulfills an unmet need for a wide area network health maintenance system and provides further related advantages as described in the following summary.
SUMMARY OF THE INVENTION
[0026] The present invention teaches certain benefits in construction and use which give rise to the objectives described below.
[0027] Family caregivers comprise the largest contingent of people caring for elderly persons. Without a doubt, family caregivers are dedicated and loving people. At times, however, the task of caring for an elderly family member becomes overwhelming. In addition, the demands of family and the workplace must be considered, along with the personal needs of the caregiver. The present invention is dedicated to helping family caregivers find that needed balance in their lives. The goals of the present invention are:
[0028] Provide family caregivers with information, resources, and support.
[0029] By using a CareGuide through an Internet service site www.carehelper.com, which will be described below, family caregivers can access information about legal and financial issues. The guide's Caregiving Skills Section provides information about caregiving tasks such as bathing and grooming, home and environmental safety assessment, medication compliance, and looking out for depression. A key component of CareGuide is the Caregiver Support Section, where family caregivers can find out about stress and its relief, and how to avoid the burnout so commonly associated with family caregiving. Each section of CareGuide provides links to informational and supportive resources available on other high-quality websites. We have pulled together the critical aspects of caregiving to provide a comprehensive Internet information base for family caregivers.
[0030] Provide family caregivers with the tools to organize their busy lives.
[0031] Users of the method of this invention will find a variety of resources designed to help alleviate stress through organization. By completing worksheets, caregivers are able to customize a personal care organizer in which all information related to care recipients' medical history, physicians, medications, pharmacies, food requirements and preferences, and insurance can be brought together in one place. Users also are provided with a calendar and personal planner to keep track of appointments and important events. A Shopping Manager allows caregivers to record needed medications, supplies, groceries and personal items. This list can be organized by store, and the caregiver can print it out when they plan to go shopping.
[0032] Provide Peace of Mind Through the Use of Remote Monitoring Technology.
[0033] Did Dad take his blood pressure medication? Will Mom remember to check her blood glucose? These are common worries among family caregivers. The invention method seeks to alleviate such worries through the introduction of remote monitoring medical devices. For example, Dad's blood pressure medication may be stored in CareHelper's pill bottle device. An alarm will sound at the time the medication is to be taken. If the bottle is opened, the device will transmit a signal to an in-home base station. This information is then uploaded to a database. The caregiver can request reports to track compliance, and can compare Dad's pill-taking behavior with his actual blood pressure as measured with a blood pressure device. Other devices remotely monitor devices to track blood glucose, weight, and body temperature.
[0034] Provide Feedback from Home Health Professionals.
[0035] In addition to reports that can be generated by the caregiver, the method utilizes computer video technology to generate periodic reports delivered by the care recipient's health care professional. These videotaped sessions take the caregiver through the reports step-by-step. They can be viewed at any time--even while the caregiver is at work.
[0036] Generally the embodiments described herein are examples of using the invention for healthcare applications. It should be noted, however, that the technology can just as easily be applied to applications outside of healthcare.
[0037] For example, the System could be used with a healthy consumer undergoing a diet and exercise program. The Data Collectors would measure body fat, calories burned, distance walked, and body weight. The shopping list would include diet bars and powders. A fitness consultant, rather than a nurse, would be the Video-star. The fitness consultant would recommend new exercises, provide encouragement and support, and suggest purchases of appropriate nutritional supplements. The End-User would use the Browser to receive this information, including Video Streams from the fitness consultant with selected synchronized charts.
[0038] In another example, the System could be used with a consumer looking to purchase cruise ship tickets or automobiles. The Data Collectors would include forms about their interest in different destinations or vehicle models. The Charts would include images of different destination, accommodations, vehicle features, and/or financing options for the trip or vehicle purchase.
[0039] In such a manner, the invention disclosed herein, which is based on technology previously disclosed, has application in many fields with health, fitness, diet, nutrition, travel, and consumer purchases.
[0040] Likewise, the invention has application in many forms of business-to-business relationships. For example, the System could be used by sale representatives for companies selling integrated circuits and electronic components to manufacturers of electronic devices. The Video-star would be the sales rep of the component provider. The End-User would be the purchasing agent of manufacturer. The Data Collection devices would include the manufacturer's inventory database system. The Video Stream would include data about needed components including Charts which illustrated products, showed graphical representations of inventory usage or status, and automatically generated purchase order forms for the End-User to approve.
[0041] In this manner, in all fields of business and commerce, the described invention offers a low-cost method by which status-reporting and sales-generating data can be deployed to the purchasers of products.
[0042] Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] The accompanying drawings illustrate the present invention. In such drawings:
[0044] FIG. 1 is a diagram showing a login monitor screen of the preferred embodiment of the invention;
[0045] FIG. 2 is a diagram showing a new caregiver monitor screen thereof;
[0046] FIG. 3 is a diagram showing a caregiver page monitor screen thereof;
[0047] FIG. 4 is a diagram showing a caregiver personal information monitor screen thereof;
[0048] FIG. 5 is a diagram showing an add a new care recipient monitor screen thereof;
[0049] FIG. 6 is a diagram showing a care recipient personal information monitor screen thereof;
[0050] FIG. 7 is a diagram showing a care recipient emergency contact information monitor screen thereof;
[0051] FIG. 8 is a diagram showing a care recipient physician information monitor screen thereof;
[0052] FIG. 9 is a diagram showing a shopping manager monitor screen thereof;
[0053] FIGS. 10-12 are diagrams showing device set-up monitor screens thereof;
[0054] FIG. 13 is a flow chart of a CareHelper.com screens;
[0055] FIG. 14, is a diagram showing a testing for a video camera;
[0056] FIG. 15, is a diagram showing a screen for selecting reports for presentation;
[0057] FIG. 16, is a diagram showing a screen for selecting reports for presentation;
[0058] FIG. 17, is a diagram showing a screen for production of a video program; and
[0059] FIG. 18, is a diagram showing a screen for reviewing the video program and related charts.
DETAILED DESCRIPTION OF THE INVENTION
[0060] The above described drawing figures illustrate the invention in at least one of its preferred embodiments, which is further defined in detail in the following description.
[0061] The Personalized Health Video System (the "System") comprises one instance of a Healthcare Signal Telemetry System, which may be used for selling healthcare related products. Enhancements and modifications to the Healthcare Signal Telemetry System allow the same core technology to be used to sell numerous other types of products.
[0062] The complete System includes the following where "equipment" refers to hardware, software, as in computer coded instructions, systems interconnections and other means for achieving the stated method of the present method:
[0063] Personal data collecting devices (the "Data Collectors") which may be:
[0064] Tangible products such as wave-energy enabled pill bottle lids previously disclosed, forms such as those that commonly appear on a computer screen for data entry, observational systems such as programs that monitor database or internet traffic for changes or information, other software enabled systems for determining personal data such as health care status, and other data entry methods, such as creation of shopping lists based upon item desired by the End-User.
[0065] Internet-enabled browser (the "Browser") such as Microsoft Internet Explorer or Netscape Navigator or Mosaic. The Browser may include any internet-enabled viewing system for text, graphics or a combination of the two.
[0066] Information servers for database storage and manipulation "Database" such as Microsoft SQL Server.
[0067] Video servers for streaming video images and audio tracks (the "Video Stream") such as Microsoft Media Server or Real Networks Video Server.
[0068] Internet servers "Internet Server" for sending html web pages and other formats of Browser-viewable pages over the internet.
[0069] Internet connections "Pipe" for linking Browser, Database, Video Stream and Internet Server with each other and with other Internet users. Preferably, the Pipe will have high-bandwidth such as a T1 line, cable modem or DSL. However, ordinary dial-up modems are sufficient too.
[0070] Server operating systems such as Windows NT or Unix "Server Operating System". Depending upon the capabilities of the Server Operating System and the underlying hardware platform, the Database, Video Stream and Internet Servers may reside on the same machine or may reside on several machines that are linked with the Pipe or other linking means.
[0071] End-user operating systems such as Windows 95, Windows 98 or Windows NT. However, other operating systems such as Linux may also be used "User Operating System".
[0072] Video cameras and microphones for creating custom videos that are commonly available. Preferably, the video cameras have parallel or USB connections to a personal computer. The microphone, preferably, links to a sound card or similar circuitry within the personal computer. However, the use of integrated camera/microphones and other formats of cameras and microphones may also be used. Collectively referred to herein as the "Camera".
[0073] Personal computers, such as Pentium II and Pentium III based PCs that are commonly available with viewing monitors, keyboards, mouse, speakers and other typical accessories. Collectively referred to herein as the "PC".
[0074] Specialized video creation software "Video Software" for generating custom videos, including controls for recording and setting camera/microphone functions. Such Video Software also replays videos after creation and compresses videos for distribution to others using the Video Stream.
[0075] Equipment for transferring data from Data Collectors to the Database. Such means may include the base-station device which receives the wave-energy signals from the Data Collectors and sends the corresponding information to the Database. The method of sending the information to the Database includes formatting it for transfer in the Pipe.
[0076] Equipment for creating graphical representations of data from the Database, typically in the form of time plots and charts. Preferably, multiple graphic representations are shown with axes synchronized for comparative viewing. The data in the Database may include data that is transferred from the Data Collectors. It may also include data that is received from other sources, such as a catalog of products and their affiliated purposes. It may further include data that is received from other sources which describes a process or series of steps to perform to accomplish a goal. Any and all such graphical representations are referred to as the "Charts".
[0077] Equipment for accessing and graphically viewing pictures of products or illustrations of tangible items or illustrations of process-oriented steps, as may be stored on the Database. An example of such a process are the steps necessary to prepare a meal, including making a list of items to procure, preparing the items for cooking, instructions for cooking times, and illustrations of serving suggestions. Any and all such graphical representations are also referred to as the "Charts".
[0078] Audio sound pickup equipment for receiving sounds from the audio tracks of the Video Streams.
[0079] Video equipment for viewing moving pictures from the Video Streams.
[0080] Equipment for determining personalized information from the Database as may apply specifically to one end-user.
[0081] Equipment for selecting graphical images (items #14 and 13) and placing them in a list for later selection in random or sequential or repetitive order.
[0082] Equipment for creating the video in a window on the screen while selecting the graphical images from the list. Such images appearing in an adjacent window in sync with the video message mentioning or describing such graphical image.
[0083] Definitions of different types of system users:
[0084] The "End-User" is a consumer or patient or family caregiver. Typically, this person would be a customer for the business deploying the System.
[0085] The "Video-star" is a person who represents the business (or its affiliated or related interests) and is using the System. Typically, this person would be a nurse who is advising the patient or the family caregiver about some aspect of healthcare. However, this person could also be a sales representative selling health-related products, such as wheelchairs, or other non-health-related products, such as flowers.
[0086] Equipment for automatically creating a relationship between the personalized information about the End-User and the graphical images generated from the Database and the text format data from the Database. Then further equipment for displaying a text or visual message that cues the Video-star to mention appropriate portions of the personalized information in sync with selecting the Charts.
[0087] Equipment for automatically generating a script or list of points for the Video-star to mention. Such equipment includes running pre-defined rules on the database to identify End-Users who are likely to benefit from such information. For example, the pre-defined rule might be "remind any End-User taking medications to get a refill if the Data Collector equipment indicates that 30 days have passed in which the medication was taken". Please note: this rule differs from a simple 30-day reminder to get a refill (current state-of-the-art) because it counts the number of days in which the medication was actually taken (one of our advances of the state-of-the-art).
[0088] Equipment for automatically generating Charts, such as a shopping list or purchasing order form. Such generated charts are created based upon running pre-defined rules on the database.
[0089] Equipment for allowing the Video-star to review the Charts and personalized information and then take notes for items to mention to the End-User in a video presentations consisting of the Video Stream and synchronized Chart displays.
[0090] Equipment for allowing the Video-star to review the Charts and personalized information and then prepare notes to be displayed to the End-User in a video presentations consisting of the Video Stream and synchronized Chart displays. One or more such Charts would include the display of notes just created by the Video-star.
[0091] Equipment for generating information that is of temporal use to the End-User, including presentation of such information in text, graphical or video formats. Such temporal information may be in the form of "Alerts" or "Suggestions". The Alerts might include information about a data parameter that was out of range. The Suggestions might include purchasing suggestions for upcoming holidays. These Alerts and Suggestions are displayed to the End-User. These Alerts and Suggestions are also displayed to the Video-star prior to creation of a Video Stream. The Alerts and Suggestions are one form of the automatically generated scripting information.
[0092] Many custom prepared videos with associated and synchronized chart presentations can be made using commonly available software such as Microsoft Netshow or Real Networks RealPresenter. However, the drawbacks of these products include an inability to link directly to databases, a time-consuming and expensive method of preparation and delivery, and an inability to randomly select charts while in the midst of creating the video. Also, these products lack the ability to automatically generate scripts for the person creating the video. All these limitations are addressed with the current inventions described herein.
[0093] The specification of the present invention includes an example of the System in which a Nurse is monitoring a care-recipient at home. Since most care-recipients are elderly, the Nurse often, but not always, communicates with a family caregiver such as an adult child living in the same home. With respect to terminology, the Nurse is the "Video-star". The term "Nurse" also includes other clinician and non-clinical persons who might assist with the care of the End-User. The term "System" is also referred to as CareHelper.com, which is the web-enabled platform upon which the embodiment of the technology has been built.
[0094] The care-recipient and family caregiver are aggregated to be the "End-User". The Nurse Station is the PC workstation that a Nurse uses to access a the Database and create the Video Stream.
[0095] The Base-Station Hardware and Software runs on the End-User computer and allows the "Data Collector" devices (pill bottle, blood pressure monitors, etc.) to link to the "Database". The Browser also allows the End-User to create, view, access, modify and otherwise interact with a Shopping List Manager. This is another form of a Data Collector in which information is collected from the End-User regarding personal shopping habits or desires.
[0096] The "Alerts" window which appears on the End-User homepage functions to notify the End-User of temporal items. The Suggestions and Reminders window which appears on the Shopping Manager screen and End-User homepage functions to notify the End-User of purchasing suggestions or reminders.
[0097] The Alerts, Suggestions, Reminders, Shopping List information, Database information, and Charts formed from the Database information all appear on the Nurse Workstation Screens. The Nurse is able to select any or all of these items, in any order including repeating any such item, while creating the Video Stream. These are then saved, compressed and displayed to the End-User in sync with the video message.
[0098] Such Video Stream message includes health status information, reminders to make purchases, reassurance, rapport-generating statements, educational information, and/or other information or commentary as may be deemed advisable by the Nurse. Sample of such video commentary were previously disclosed in the above-mentioned patent applications.
[0099] The present invention is a personalized health video system, method and apparatus which comprises a personal data collecting means, Internet enablement equipment, information system, video serving equipment, server operating system, user operating system, graphical creation equipment, viewing equipment, audio equipment, relationship generating equipment, script generating equipment, charts generating equipment, chart reviewing equipment, and video library equipment; the components arranged and interconnected and enabled in an operating personalized health video system.
[0100] The method of the invention presents personalized video programming to medical patients. The method is functional through a data processing system referred to above as the information system, and comprising, for each selected patient, the steps of: receiving a medical alert message responsive to a trigger action; reviewing patient specific data corresponding to the alert message; forming a medical decision based upon the patient data; selecting non-patient specific information relative to the patient data and the medical decision; composing a video program based on the patient specific data and the non-patient specific information; encoding, posting and hosting the video program; creating the posting; logging the video program; transmitting the video program to the selected patient; and enabling playback of the video program for patient review and follow-up. The trigger action is performed by at least one of; a medical personnel, the selected patient, and a computer program. The patient specific data is usually requested by the medical personnel and includes patient vital signs and patient medical performance actions and other information.
[0101] To accomplish the above method, the medical information system comprises patient specific data collecting devices, software enabling distributive network communications, a data storing equipment, a video streaming equipment, video show producing equipment, network data transmission equipment, video show playback equipment, and patient specific data. The video show producing equipment is preferably an equipment for producing a graphical image show of selected and sequenced images. An equipment for simultaneous video displaying of the graphical image show, and related written commentary is preferably provided. As well, an equipment for creating a stored relationship between the patient specific data and a graphical image show is provided.
[0102] An equipment for producing graphical representations of the patient specific data is enabled, as well as a equipment for associating non-patient specific information in the graphical representations of the patient specific data. An equipment for creating a script for a video show is provided. An automation equipment for creating video charts related to a patient specific data.
[0103] The method of the present invention comprises the use of a variety of computer monitor screens which provide enablement for placing information into and retrieving information from storage as well as the functions described above. The set of screens described below define the present method and apparatus of the invention as follows:
[0104] FIG. 1 shows a monitor screen of the present invention designed as an introduction. Pertinent to this screen are the following:
[0105] Screen Title: CareHelper Home Page. Display "Welcome to CareHelper.com"
[0106] Screen Design: TBD
[0107] Screen Goal: Present overview of business, services and products and also gather the minimum amount of information needed in order to login the CareGiver.
[0108] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0109] Screen Access: Initial page display when visiting web site: CareHelper. com and when selecting Home Page
[0110] Screen Top Menu Bar: CareHelper Top Menu Bar
[0111] Screen Left Column Menu Bar: Blank
[0112] Table Access: 1) Caregiver Table (Read)
[0113] Screen Defaults: Display saved User name and saved password as "****" if Saved Password field was checked.
[0114] Required Fields: See indicator * by the fields for required field entry for successful processing.
[0115] Screen Buttons:
[0116] Continue--will process screen info
[0117] Reset--will clear fields and reset to defaults
[0118] New Member Registration--will go to Screen Name: 2.0 New Member Registration
[0119] [Need help with your Login and Password]--will go to a screen to make it possible for CareHelper to email to the user their correct User Name and Password
[0120] Special Processing:
[0121] When first displaying window fields: If Saved Password is checked default the password and display '****'. If Saved Password is not checked do not default the display of the password.
[0122] Screen Processing:
[0123] [Continue] key processing: Confirm Password' field with User login.
[0124] If a match, continue to the CareGiver Page
[0125] If not valid, display the following error message:
[0126] "Your Password is not valid, please reenter your password."
[0127] If you need help with your login, please select [need help with login and password]
[0128] FIG. 2 shows a monitor screen of the present invention designed for registration of the patient. Pertinent to this screen are the following:
[0129] Screen Title: New CareGiver Registration (display title: Note special font bolding of "Giver")
[0130] Screen Design: Template was based on the membership registration screen practices that are commonly used on other websites.
[0131] Screen Goal: Gather the minimum amount of information needed in order to register the CareGiver. Also, to appear consistent with other website registration processes as are in common usage today.
[0132] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0133] Screen Issues:
[0134] Screen Access: From CareHelper Home Page
[0135] Screen Top Menu Bar: New Caregiver Registration Top Menu Bar--navigates with drop down lists.
[0136] Screen Left Column Menu Bar: Blank
[0137] Table Access: 1) Caregiver Table (Read/Write)
[0138] Screen Defaults: none
[0139] Required Fields: See screen for required fields for successful registration.
[0140] Screen Buttons: I Accept; Reset; Return to Home Page; Continue
[0141] Special Processing:
[0142] Highlight all require fields which have not been completed in red.
[0143] Only show '*' for each character enter into the password and confirm password fields.
[0144] Save Username and redisplay on login screen, each time user logs in.
[0145] If "save password" is selected, default the saved password on the login screen.
[0146] Process after the selection of the [I accept/Submit form] key:
[0147] Verify 'CareGiver First and Last Name' combined, are a unique entry.
[0148] 'Confirm Password' field must match the 'Password' field entry. If fields do not match, clear both fields and request the user to reenter the password with the message:
[0149] "Your Confirmed Password does not match your Password, please reenter your password".
[0150] Restrict Password to be a minimum of 4 characters.
[0151] Screen processing:
[0152] [I accept Submit Form]: After successful registration processing:
[0153] Display a clear screen with the Top Menu Bar and display the following statement in the <error messages and message screen area> :
[0154] "Welcome, <caregiver.firstname> as a registered CareGiver with CareHelper.com"
[0155] Display the buttons Continue and Return to CareHelper Home Page.
[0156] [Reset form]: The Reset Form key will clear all fields on the screen and place the cursor back at the top of the screen.
[0157] Unsuccessful registration: After selecting the [I accept/Submit form] key, reject the registration for the following reasons and display the following statement in the <error messages and message screen area> :
[0158] "We were unable to register you as a CareGiver with CareHelper, because you are already a registered CareGiver"
[0159] "Password cannot be less than 4 characters. Please try again"
[0160] "We were unable to register you as a CareGiver with CareHelper. com. Please complete entry for the following fields" (highlight the fields in Red)
[0161] FIG. 3 shows a monitor screen of the present invention designed for use by the caregiver. Pertinent to this screen are the following:
[0162] Screen Title: CareGiver Page (display title)
[0163] Screen Design:
[0164] Allow a CareGiver to have more than one Care Recipient, initially two but no limit.
[0165] Have important patient specific alerts presented to the CareGiver for immediate follow up.
[0166] Easily see the Care Recipient information options available on the Left Column Menu Bar.
[0167] The Top Menu bar was designed to assist the CareGiver manage their day, time, personal items, mail, account and help coordinate multiple Care Recipients.
[0168] Screen Goal: With minimum effort, CareGiver can quickly see priority patient follow up items, still access their calendar and personal info and easily access the navigational menu bar to quickly get to the patient specific information.
[0169] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0170] Issues/Concerns:
[0171] Top Menu Bar: Caregiver Recipient Top Menu Bar (drop down selection)
[0172] Left Column Menu Bar: 1) CareGiver Page Left Column Menu Bar (Shift menu navigation); 2) CareGiver--Care Recipient Left Menu Bar
[0173] Right Column Frame: Alert events, in a scroll box. Alerts by patient. Shopping Manager frame.
[0174] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Read) , 3) Events (Read)
[0175] Screen Buttons: If you are not <caregiver.firstname> <caregiver. lastname>, press here; Select, Change Status, Delete
[0176] Screen Defaults:
[0177] Default the first patient in the CareGiver list of patients as selected when the window is first displayed and no prior Care Recipients have been selected.
[0178] Display the defaulted patient's nicknames in the Left Column Menu Bar. If no nicknames exist for the Care Recipient, display the < patient. firstname> instead.
[0179] If a CareGiver has no Care Recipients entered, then:
[0180] Do not display a Care Recipients Nickname on the Left Column Menu Bar
[0181] Display an empty Alert Box on the Right Column Frame
[0182] Display the Shopping Manager box if empty (ie. could have CareGiver only shopping items if no Care Recipient has been entered.
[0183] Only display CareGiver Page Left Menu Bar, do not display Care Recipient Left Menu Bar
[0184] Only Display the buttons: [If you are not <caregiver. firstname> < caregiver.lastname>, press here]
[0185] Required Fields: na
[0186] Special Processing:
[0187] If a Care Recipient for the Registered CareGiver has already been selected then each time they return to this page display the Care Recipient Nickname on the Left Column Menu Bar. (Default to Care Recipient first name, if there is no nickname)
[0188] Display all of the Care Recipients and their associated Alert events for a CareGiver in the Alert scrolling box.
[0189] Screen Processing:
[0190] After the Care Recipient has been highlighted and selected access the Care Recipient from the Patient Table, return to the CareGiver Page, display the <patient.nickname> over the Left Column Menu Bar. Display the buttons associated with more than one patient.
[0191] After the New Care Recipient has been highlighted and selected go directly to the Add Care Recipient screen and display cleared fields ready for entry.
[0192] FIG. 4 shows a monitor screen of the present invention designed for documenting personal information of the caregiver. Pertinent to this screen are the following:
[0193] Screen Title: CareGiver Information (display title with CareGiver First name to personalize the window)
[0194] Screen Design: Formatted similar to other system screens, where information that is logically grouped and placed on single screens. The user is still allowed to exit the screen without changing information. Screen layout still needs to be finalized.
[0195] Screen Goal: Allow a CareGiver to enter a minimum set of information.
[0196] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0197] Screen Access: CareGiver Page-Recipient Left Bar Menu; Directly from the New CareGiver Information [Continue] Key
[0198] Top Menu Bar: CareGiver Page Top menu Bar
[0199] Left Column Menu Bar: [Change Password] access
[0200] Table Access: 1) Caregiver Table (Read)
[0201] Required Fields: see screen for identified fields with *
[0202] Default Fields: If no nickname is added, default first name for nickname.
[0203] Drop Down Box: State field is selected through a drop down box, first letter typed and go directly to that position in the list
[0204] Screen processing:
[0205] Following the [Save and Continue] key selection, save the entered information into the CareGiver Table and go to the next sequence screen.
[0206] Following the [Return Later] key selection, save the entered information into the CareGiver Table and return to CareGiver Page 3.0
[0207] Following the [Do not save] key selection, do not save the entered information and return to CareGiver Page 3.0.
[0208] [Change My Password] will display a pop-up screen to allow the password to be changed and confirmed. After the password has been changed update the CareGiver Table and send an email to the CareGiver confirming the new password.
[0209] If the user tries to leave the screen without selecting one of the three button, give an error message "xxxxxxx"
[0210] FIG. 5 shows a monitor screen of the present invention designed for adding a new care recipient. Pertinent to this screen are the following:
[0211] Screen Title: Add New Care Recipient
[0212] Screen Design: Formatted similar to other system screens, to have information easily entered and still allow the user to exit the screen without adding a Care Recipient.
[0213] Screen Goal: Allow a CareGiver to enter a minimum set of information, in order to add a Care Recipient
[0214] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0215] Top Menu Bar: Caregiver Top menu Bar
[0216] Left Column Menu Bar: Process Steps
[0217] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Write)
[0218] Required Fields: see screen for identified fields
[0219] Screen processing:
[0220] Following the [Add New Care Recipient] key selection, and a successful processing, add the information to the Patient Table and go to the Care Recipient Information Screen.
[0221] If Care Recipient Firstname is the same as CareGiver Firstname, display a message to recommend a nickname.
[0222] Unsuccessful add: After selecting the [Add New Recipient] key, reject the add for the following reasons and display the message at the bottom of the screen:
[0223] "We were unable to add the Care Recipient, because the person already exists in the CareHelper.com."
[0224] "We were unable to add the Care Recipient. Please complete entry for the following fields: List the fields."
[0225] Following the [Do not add, Return to CareGiver Page] key selection, return to the CareGiver Page
[0226] FIG. 6 shows a monitor screen of the present invention designed for documenting a care recipient person information. Pertinent to this screen are the following:
[0227] Screen Title: Care Recipient Information (display title with Care Recipient First name to personalize the window)
[0228] Screen Design: Formatted similar to other system screens, where information that is logical grouped is placed on single screens. The user is still allowed to exit the screen without changing information. Screen layout still needs to be finalized.
[0229] Screen Goal: Allow a CareGiver to enter a minimum set of information.
[0230] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0231] Screen Access: CareGiver Page-Recipient Left Bar Menu; Directly from the New Care Recipient Information [Continue] Key
[0232] Top Menu Bar: Caregiver Page Top menu Bar
[0233] Left Column Menu Bar: 1) CareGiver Page Left Column Menu Bar; 2) CareGiver--Care Recipient Left Menu Bar
[0234] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Write),
[0235] Required Fields: see screen for identified fields
[0236] Default Fields: If no nickname is added, default first name for nickname.
[0237] Drop Down Box: State field is selected through a drop down box, first letter typed and go directly to that position in the list
[0238] Screen processing:
[0239] Display the information that has been previously entered for a New Care Recipient and for an existing Care Recipient. Allow the information to be updated.
[0240] Following the [Save and Continue] key selection, save the entered information into the Patient Table and go to the next sequence screen.
[0241] Following the [Return Later] key selection, save the entered information into the Patient Table and return to CareGiver Page.
[0242] Following the [Do not save] key selection, do not save the entered information and return to CareGiver Page.
[0243] If the user tries to leave the screen without selecting one of the three button, give an error message "xxxxxxx"
[0244] FIG. 7 shows a monitor screen of the present invention designed for documenting a care recipient's personal information. Pertinent to this screen are the following:
[0245] Screen Title: Care Recipient Contact Information (display title with Care Recipient First name to personalize the window)
[0246] Screen Design: Formatted similar to other system screens, where information that is logical grouped is placed on single screens. The user is still allowed to exit the screen without changing information.
[0247] Screen Goal: Allow a CareGiver to enter a minimum set of information.
[0248] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0249] Screen Access: CareGiver Page-Recipient Left Bar Menu; Directly from the Care Recipient Personal Information [Continue] Key
[0250] Top Menu Bar: Caregiver Page Top menu Bar
[0251] Left Column Menu Bar: 1) CareGiver Page Left Column Menu Bar; 2) CareGiver--Care Recipient Left Menu Bar
[0252] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Read) , 3) Patient Contacts Table
[0253] Required Fields: see screen for identified fields
[0254] Default Fields: If no nickname is added, default first name for nickname. Default the CareGiver as the Primary Emergency Contact and allow update of the contact order.
[0255] Drop Down Box: "Contact Order" are selected through a drop down box, first letter/number typed and go directly to that position in the list. See Tables Definition in the Appendix for field Drop Down Box values
[0256] Screen processing:
[0257] When initially displaying window,
[0258] Default the primary contact with the Care Giver info if no contact has been entered.
[0259] If "New Contact" is highlighted and display the fields ready for a new contact Add
[0260] Default to highlighting the one contact in the select box (Care Giver is no other has been entered), and default the display of the contact in the fields
[0261] If more than one contact exists, display the contacts in the select box in Contact order, default to the last contact updated/entered and highlight and display in fields
[0262] Following the [Save and Continue] key selection, save the entered information into the Contacts Table and go to the next sequence screen.
[0263] Following the [Return Later] key selection, save the entered information into the Contacts Table and return to CareGiver Page.
[0264] Following the [Do not save] key selection, do not save the entered information and return to CareGiver Page.
[0265] If the user tries to leave the screen without selecting one of the three button, give an error message "xxxxxxx"
[0266] FIG. 8 shows a monitor screen of the present invention designed for documenting a care recipient's physician information. Pertinent to this screen are the following:
[0267] Screen Title: Care Recipient Medical--Physician Information (display title with Care Recipient First name to personalize the window)
[0268] Screen Design: Formatted similar to other system screens, where information that is logical grouped is placed on single screens. The user is still allowed to exit the screen without changing information.
[0269] Screen Goal: Allow a CareGiver to enter a minimum set of information.
[0270] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0271] Screen Access: CareGiver Page--Recipient Left Bar Menu; Directly from the Care Recipient Contact1 Information [Continue] Key
[0272] Top Menu Bar: Caregiver Page Top menu Bar
[0273] Left Column Menu Bar: 1) CareGiver Page Left Column Menu Bar; 2) CareGiver--Care Recipient Left Menu Bar
[0274] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Read) , 3) Patient Physician Table
[0275] Required Fields: see screen for identified fields
[0276] Default Fields: If no nickname is added, default first name for nickname.
[0277] Drop Down Box: "Status", "Specialty 1" and "State" fields are selected through a drop down box, first letter typed and go directly to that position in the list. See Tables Definition in the Appendix for field Drop Down Box values
[0278] Screen processing:
[0279] When initially displaying window,
[0280] If there are no physicians entered, default to highlighting the "New Physician" and display the fields ready for a new physician Add.
[0281] If there is only one physician entered, default to highlighting the one contact in the select box, and default the display of the physician in the fields
[0282] If more than one physician exists, display the physician in the select box in physician order, default to the last contact updated/entered and highlight and display in fields
[0283] [Search for Physician] button goes to the Search Physician search function, which searches a list of predefined physicians
[0284] Following the [Save and Continue] key selection, save the entered information into the physician table and go to the next sequence screen.
[0285] Following the [Return Later] key selection, save the entered information into the physician Table and return to CareGiver Page.
[0286] Following the [Do not save] key selection, do not save the entered information and return to CareGiver Page.
[0287] If the user tries to leave the screen without selecting one of the three button, give an error message "xxxxxxx"
[0288] FIG. 9 shows a monitor screen of the present invention designed for managing health care shopping. Pertinent to this screen are the following:
[0289] Screen Title: Shopping Manager (display title)
[0290] Screen Design:
[0291] Screen Goal:
[0292] Design approach: Intended to be user friendly, intuitive with personalized instructions and greetings.
[0293] Top Menu Bar: Caregiver Page Top menu Bar
[0294] Left Column Menu Bar: Shopping Manager Left Menu Bar
[0295] Table Access: 1) Caregiver Table (Read), 2) Patient Table (Read) 3) Shopping Manager
[0296] Required Fields: n/a
[0297] Default Fields: n/a
[0298] Drop Down Box: n/a
[0299] Buttons: RESET; SAVE; EXIT; PRINT; CLEAR ALL; NEW ITEM
[0300] Screen processing:
[0301] Load the entire default Shopping Manager Prior Lists into the main center window
[0302] Load the Suggestions and Reminders in the Suggestions area and sort by Person by Item
[0303] Display the Current List items selected To-Date and corresponding quantities
[0304] First time entering the window, display the Shopping Manager sorted by Caregiver list, Patient list. Within each list sort by Medications, Supplies and Other and within each subcategory sort by item.
[0305] Button Processing:
[0306] [Save for Later] saves the screen for later use and processes any of the screen check-offs for removing (delete) from any indicated lists.
[0307] [EXIT] exits without saving any of the changes or any additional processing
[0308] [RESET] Clears and resets the current shopping list.
[0309] [New Item] Displays a pop up window with a new item to add to the current list window
[0310] [Print] prints the current list
[0311] [Add All to List] adds every item in the current box to current list with a default "001" quantity.
[0312] [CHECK OUT]--prints the current list; clears and resets the current shopping list.
[0313] Display item CG location and allow drop down box changes. If Change Location is selected in the drop down box, go to a new window (pop box) to process the change location for the item. Allow to add a new location if needed.
[0314] In the current list window, the item is allowed to have zero quantity and still remain on the list until it is refreshed, then the item is deleted. Allow changing the number of items from 0-999.
[0315] FIGS. 10-12 show monitor screens of the present invention designed for device set-up.
[0316] FIG. 13 is a screen flow diagram of CareHelper.com and defines the options available to the user.
[0317] A Nurse Station of the invention operates in three steps as follows:
[0318] 1. Prepare to make the video
[0319] 1.1 Test Camera
[0320] 1.2 Select CareGiver and Care Recipient
[0321] 1.3 Select Reports for Presentation
[0322] 2. Make the Video/Presentation
[0323] 2.1 Make the Video
[0324] 3. Review Video/Presentation and Submit
[0325] 3.1 Review Video and selected Reports
[0326] As above, we define the method and apparatus of this portion of the invention by defining the monitor video screens used, as follows:
[0327] Referring now to FIG. 14, for testing the video camera:
[0328] 1. The purpose of this screen is to allow the Nurse to be able to view themselves and adjust the hardware and controls (Volume, Contrast and Brightness, only)
[0329] 2. Test Camera Screen resides on the Nurse Station along with the Camera software.
[0330] 3. The video is recorded as Mirror Image.
[0331] 4. The camera is always on, see viewing the image starts immediately when first entering the screen.
[0332] 5. [RECORD] does a count down from 5, before it starts recording
[0333] 6. [PREVIEW] previews the last test recorded video.
[0334] 7. Control settings show the current and recommended range of volume, contract and brightness.
[0335] 8. Above the Volume controls is a microphone recording feedback bar, which indicates the microphone recording level.
[0336] 9. Note: The technical video settings that impact processing, quality, performance, compression and sending the video is to be accessed by a separate System Administrator screen only.
[0337] Referring now to FIG. 15, for selecting reports for presentation:
[0338] 1. Purpose of screen is to select who we are making the presentation for: CareGiver/Care Recipient (also referred to as "CG" and "CR", respectively) .
[0339] 2. All of the CareGivers previously assigned to a nurse will be displayed in the CareGiver List. Default to highlighting the first CareGiver in the list.
[0340] 3. When a CareGiver is highlighted, all of the Care Recipients associated with the CareGiver will be displayed in the Care Recipient window.--default highlighting the first Care Recipient listed.
[0341] 4. This screen is based on the web-server, and accessed by the nurse through the Nurse Base Station. This interface is has seamless as possible to the nurse.
[0342] 5. After selecting the CG, CR and the [Continue] button is pressed, the selected information required to complete the Presentation is returned to the Nurse Station, to complete the video.
[0343] 6. EXIT exits the screen and returns to the NS Main Screen.
[0344] Referring now to FIG. 16, for selecting reports for presentation:
[0345] 1. Purpose of screen is to select the reports to be included in the presentation. In addition, clinical notes, that remain confidential to the clinician may be entered for each report
[0346] 2. "1.3 Select Report for Presentation screen" resides on the web server and the information needed to create the video is sent back to the Nurse Station.
[0347] 3. Select Reports Windows:: For a given CareGiver/Care Recipient a list of the CR custom report templates (made previously). Default to highlighting the first report in the list.
[0348] 4. [View Prior Presentation] clears the current report selections and shows the reports and notes loaded for the prior presentation.
[0349] 5. View Reports Window: When a report is highlighted display the report/graph in the viewing window.
[0350] 6. Clinical Notes Window: Display the associated clinical notes for the selected report. These notes are only viewed by the nurse and are specific for the presentation/report only.
[0351] 7. Presentation Summary Window: Every presentation has a "Presentation Summary" report which the nurse prepares in outline format with bullet points. This Summary is saved as a report to be viewed in the presentation. This Summary Window allows the creation and editing of the summary.
[0352] 8. [RESET] resets the screen.
[0353] 9. [EXIT] exits the screen and returns to the Main NS Screen. Warn the user that exiting will loose all presentation prep work.
[0354] 10. [Next] saves the presentation info and goes to the next phase of screens: "2.1 Make Video" screen.
[0355] 11. [Back] returns to the prior screen.
[0356] Referring now to FIG. 17, for production of the video:
[0357] 1. Purpose of the screen is to make the video with the viewing of the reports
[0358] 2. The video is recorded as Mirror Image.
[0359] 3. [RECORD] does a count down from 5, before it starts recording
[0360] 4. [PREVIEW] previews the last test recorded video. When first entering the screen, the [PREVIEW] is grayed-out and not accessible until a video has recorded.
[0361] 5. The Presentation Summary Report and the previously selected presentation reports (from the prior screen) are displayed in the bottom right window as Thumb Nails. The ordering numbering of the reports remain blank. The ordering numbering indicates the order the reports were selected for presentation viewing. The system updates the ordering numbering after each report selection. When the Thumb Nail Report is selected the corresponding clinical notes and report are viewed by the nurse in the appropriate window. Note the Presentation Summary does not have any clinical notes associated with it.
[0362] 6. The timing of the Thumb nail selection indicates when each report is to be displayed during the video viewing, Example:
[0363] Step 1: Select Presentation Summary and report displayed in bottom left window. System places "1" as the order number
[0364] Step 2: Press [Rec], and the video starts recording.
[0365] Step 3: Select Report Weight Temp, report loads while video is still recording. Step 4: The nurse provides commentary or other information associated with the report being displayed.
[0366] Step 5: The nurse repeats steps 3 and 4 for additional reports. At a later time during the video, the nurse may return to any of the reports for further follow-up commentary.
[0367] Step 6: When complete, the nurse presses the "Stop" button.
[0368] 7. The REC, PAUSE and STOP buttons visually look like the buttons on a video player.
[0369] 8. The [BACK] button allows the Nurse to go back to the previous page and make changes if necessary and return to continue the video from this page, if the video has been paused.
[0370] 9. [Pause] button pauses the video recording but does not interfere with selecting and loading of reports. Re-pressing the [Pause] will continue the video recording
[0371] 10. [STOP] stops the video recording and completes the video. Once the video has been [STOP] stopped, it cannot be modified.
[0372] 11. EXIT exits the screen and returns to NS Main Screen. Warn the user that exiting will loose all presentation prep work.
[0373] Referring now to FIG. 18, to review the video and charts:
[0374] 1. Purpose of the screen is view the presentation exactly as the CareGiver will view the presentation and submit the final presentation to be sent to the CareGiver.
[0375] 2. [REPLAY] plays the presentation exactly how the presentation is to be viewed.
[0376] 3. [Deliver to <caregiver.firstname> <caregiver.lastname>] delivers the presentation to the selected CareGiver through the web-server. Also, an alert is generated indicating a presentation has been sent and needs to be view. Lastly, an email is sent to CareGiver that a video has been prepared and needs to be review.
[0377] 4. REDO returns the Nurse back to the NS-2.1 Make Video screen to redo the video.
[0378] 5. EXIT exits the screen. Warn the user that exiting will loose all presentation prep work.
[0379] While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: | | Assignee/Applicant First: | | Assignee - Standardized: | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 0 | | Inventor: Brown, Eric | | Inventor First: Brown, Eric | | Inventor - Original: Brown, Eric | | Inventor - w/address: Brown Eric,Newport Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: Patent Law & Venture Group Suite K-105 | | Correspondent - w/Address: Patent Law & Venture Group Suite K-105|3151 Airway Ave. Costa Mesa, CA 92626, US | | Examiner: | | Publication Country Code: US | | Publication Kind Code: A1 | | Publication Date: 2003-03-06 | | Publication Month: 03 | | Publication Year: 2003 | | Application Number: US2001816701A | | Application Country: US | | Application Date: 2001-08-27 | | Application Month: 08 | | Application Year: 2001 | | Application with US Provisional: US2001816701A | 2001-08-27 | | Priority Number: US2001816701A | | Priority Country: US | | Priority Date: 2001-08-27 | | Priority Date - Earliest: 2001-08-27 | | Priority Month: 08 | | Priority Year(s): 2001 | | Earliest Priority Year: 2001 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: G06F001900, G06Q001010 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
G06F001900
| G
| G06
| G06F
| G06F0019
| G06F001900
|
G06Q001010
| G
| G06
| G06Q
| G06Q0010
| G06Q001010
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| G06F 19/3418
G06F 19/322
G06F 19/3481
G06Q 10/10
| G06F 19/324
G06F 19/325
G06F 19/326
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 7050011, 705001 | | US Class (divided): 705/0011, 705/001 | | US Class - Main: 7050011 | | US Class - Original: 705001 | | ECLA: G06F001932C, G06F001934C, G06F001934N, G06Q001010, S06F001932E, S06F001932E1, S06F001932E3 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
US7555437B2
| 2009-06-30
| CARE CAM INNOVATIONS LLC
|
| | Count of Citing Patents: 1 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-01-24
| AS
| -
|
| Description: ASSIGNMENT TECHNOVIEW, INC., CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:012545/0848 2001-12-21 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 012545/0848
| 2002-01-24
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVE. SUITE K-105 COSTA MESA, CA 92626 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 012545/0848
| 2002-01-24
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVE. SUITE K-105 COSTA MESA, CA 92626 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US20030046090A1
| 20030306
| Brown Eric
| -
|
| Title: Personalized health video system |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20030046090A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20030046090A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
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| Record 16/43 | | US5445622A | Flow switch device for medical applications | | Publication Number: US5445622A | | Title: Flow switch device for medical applications | | Title (Original): Flow switch device for medical applications | | Title (English): Flow switch device for medical applications | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Flow switch device for medical applications e.g IV fluid delivery systems uses microprocessor and memory in conjunction with flow indicator switch to record events in IV infusion process | Abstract:
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized unit for placement on the patient. The device includes a flow indicator switch capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical chamber with a movable flow element which reacts to the motion of the IV fluid. A light emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member. | Abstract (English):
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized unit for placement on the patient. The device includes a flow indicator switch capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical chamber with a movable flow element which reacts to the motion of the IV fluid. A light emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized unit for placement on the patient. The device includes a flow indicator switch capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical chamber with a movable flow element which reacts to the motion of the IV fluid. A light emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member. | | Abstract (Spanish): | Claims:
What is claimed is:
1. An intravenous system for conducting an intravenous fluid, the system comprising:
*
a flow indicator switch, including a fluid conductor having a transparent conical wall enclosing a fluid space extending between spaced apart proximal and distal annular shoulders, defining, respectively, inlet and outlet fluid orifices engaging the conductor, and, within the fluid space, an opaque movable stem body with a stem body biasing means providing a restoring force urging the stem body against the proximal shoulder, and further, a light emitter and a light sensor positioned in opposition lateral to the stem body and external to the fluid conductor, and further still, an opaque mask positioned between the light emitter and the light sensor, defining a narrow path for light to move from the light emitter, across the inlet fluid orifice to the light sensor; such that with no fluid flow, the stem body abutting the proximal shoulder, light transfer to the sensor is fully blocked by the stem body, while with a fluid flow, the stem body is moved away from the proximal shoulder, light transfer to the sensor is enabled, the sensor providing a sensor electrical signal identifying start and stop of fluid flow in the conductor.
2. The intravenous system of claim 1 further including a processor circuit providing an electrical sensor interconnected with the light sensor for sensing the sensor electrical signal, a clock for identifying the time of day of each start and stop of the fluid flow, an electronic storage means for storing time of day at start and time of day at stop and further including a visible display providing means for reading fluid flow state, type of medication scheduled, and time of next medication.
3. The intravenous system of claim 1 wherein the stem body is an elongated generally circular element having a generally flat surface at one end configured for general contact with the proximal annular shoulder, said contact not preventing intravenous fluid flow out of the fluid conductor through the inlet orifice, the stem body being displaceable from the proximal annular shoulder by fluid flow into the fluid conductor through the inlet orifice against the biasing means restoring force.
4. The intravenous system of claim 2 further including a wristwatch size case containing and integrating the flow indicator switch, the processor circuit and the display, said display positioned for ease of viewing from the exterior of the case, and further including inlet and outlet interconnection means for attachment of fluid conductors from a source of intravenous fluid and to an intravenous discharge device respectively.
5. The intravenous system of claim 1 wherein the mask includes a linearly sequenced plurality of further narrow paths providing light from the source to a corresponding linearly sequenced plurality of further light detectors positioned in opposition to the light source and lateral to the stem body and external to the fluid conductor, such that the longitudinal position of the stem body is known.
6. The intravenous system of claim 3 wherein the stem body includes a generally circular outer surface, the surface providing a series of fluidic pathways for conducting the fluid between the stem body and the conical wall providing improved conductance of the fluid in the fluid conductor.
7. The intravenous system of claim 6 wherein the outer surface of the stem body is cylindrical and the outer wall is conical in shape.
8. The intravenous system of claim 1 wherein the movable stem body is optically clear.
9. The intravenous system of claim 1 wherein the physical clearance between the movable stem body and the proximal shoulder allows fluids to be either moved into or withdrawn from the system.
10. The intravenous system of claim 1 wherein the static line pressure of the fluid is the same both upstream and downstream of the movable stem body irrespective of the position of the movable stem body. | | Claims Count: 10 | Claims (English):
What is claimed is:
1. An intravenous system for conducting an intravenous fluid, the system comprising:
*
a flow indicator switch, including a fluid conductor having a transparent conical wall enclosing a fluid space extending between spaced apart proximal and distal annular shoulders, defining, respectively, inlet and outlet fluid orifices engaging the conductor, and, within the fluid space, an opaque movable stem body with a stem body biasing means providing a restoring force urging the stem body against the proximal shoulder, and further, a light emitter and a light sensor positioned in opposition lateral to the stem body and external to the fluid conductor, and further still, an opaque mask positioned between the light emitter and the light sensor, defining a narrow path for light to move from the light emitter, across the inlet fluid orifice to the light sensor; such that with no fluid flow, the stem body abutting the proximal shoulder, light transfer to the sensor is fully blocked by the stem body, while with a fluid flow, the stem body is moved away from the proximal shoulder, light transfer to the sensor is enabled, the sensor providing a sensor electrical signal identifying start and stop of fluid flow in the conductor.
2. The intravenous system of claim 1 further including a processor circuit providing an electrical sensor interconnected with the light sensor for sensing the sensor electrical signal, a clock for identifying the time of day of each start and stop of the fluid flow, an electronic storage means for storing time of day at start and time of day at stop and further including a visible display providing means for reading fluid flow state, type of medication scheduled, and time of next medication.
3. The intravenous system of claim 1 wherein the stem body is an elongated generally circular element having a generally flat surface at one end configured for general contact with the proximal annular shoulder, said contact not preventing intravenous fluid flow out of the fluid conductor through the inlet orifice, the stem body being displaceable from the proximal annular shoulder by fluid flow into the fluid conductor through the inlet orifice against the biasing means restoring force.
4. The intravenous system of claim 2 further including a wristwatch size case containing and integrating the flow indicator switch, the processor circuit and the display, said display positioned for ease of viewing from the exterior of the case, and further including inlet and outlet interconnection means for attachment of fluid conductors from a source of intravenous fluid and to an intravenous discharge device respectively.
5. The intravenous system of claim 1 wherein the mask includes a linearly sequenced plurality of further narrow paths providing light from the source to a corresponding linearly sequenced plurality of further light detectors positioned in opposition to the light source and lateral to the stem body and external to the fluid conductor, such that the longitudinal position of the stem body is known.
6. The intravenous system of claim 3 wherein the stem body includes a generally circular outer surface, the surface providing a series of fluidic pathways for conducting the fluid between the stem body and the conical wall providing improved conductance of the fluid in the fluid conductor.
7. The intravenous system of claim 6 wherein the outer surface of the stem body is cylindrical and the outer wall is conical in shape.
8. The intravenous system of claim 1 wherein the movable stem body is optically clear.
9. The intravenous system of claim 1 wherein the physical clearance between the movable stem body and the proximal shoulder allows fluids to be either moved into or withdrawn from the system.
10. The intravenous system of claim 1 wherein the static line pressure of the fluid is the same both upstream and downstream of the movable stem body irrespective of the position of the movable stem body. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An intravenous system for conducting an intravenous fluid, the system comprising:
*
a flow indicator switch, including a fluid conductor having a transparent conical wall enclosing a fluid space extending between spaced apart proximal and distal annular shoulders, defining, respectively, inlet and outlet fluid orifices engaging the conductor, and, within the fluid space, an opaque movable stem body with a stem body biasing means providing a restoring force urging the stem body against the proximal shoulder, and further, a light emitter and a light sensor positioned in opposition lateral to the stem body and external to the fluid conductor, and further still, an opaque mask positioned between the light emitter and the light sensor, defining a narrow path for light to move from the light emitter, across the inlet fluid orifice to the light sensor; such that with no fluid flow, the stem body abutting the proximal shoulder, light transfer to the sensor is fully blocked by the stem body, while with a fluid flow, the stem body is moved away from the proximal shoulder, light transfer to the sensor is enabled, the sensor providing a sensor electrical signal identifying start and stop of fluid flow in the conductor. | Independent Claims:
1. An intravenous system for conducting an intravenous fluid, the system comprising:
*
a flow indicator switch, including a fluid conductor having a transparent conical wall enclosing a fluid space extending between spaced apart proximal and distal annular shoulders, defining, respectively, inlet and outlet fluid orifices engaging the conductor, and, within the fluid space, an opaque movable stem body with a stem body biasing means providing a restoring force urging the stem body against the proximal shoulder, and further, a light emitter and a light sensor positioned in opposition lateral to the stem body and external to the fluid conductor, and further still, an opaque mask positioned between the light emitter and the light sensor, defining a narrow path for light to move from the light emitter, across the inlet fluid orifice to the light sensor; such that with no fluid flow, the stem body abutting the proximal shoulder, light transfer to the sensor is fully blocked by the stem body, while with a fluid flow, the stem body is moved away from the proximal shoulder, light transfer to the sensor is enabled, the sensor providing a sensor electrical signal identifying start and stop of fluid flow in the conductor. | Description:
FIELD OF THE INVENTION
This invention relates to intravenous (IV) fluid delivery systems and in particular to a monitoring device for providing information on when and if the delivery of an IV fluid to a patient actually occurred.
BACKGROUND OF THE INVENTION
The rapid rise of health care costs has become an important issue in modern society. To help reduce the costs, professional care givers have begun to seek alternatives, one of which is home health care services. These services not only tend to reduce costs, but are also preferred by the patient wishing to remain in his familiar environment. Among the many types of services provided are: respiratory care, rehabilitation therapy, cardiac monitoring procedures, and infusion therapy.
Infusion therapy involves IV administration of drugs. Making this therapy safe and convenient for a home situation allows a great number of patients who would otherwise be hospitalized to remain at home and still receive medication. Currently, over 300,000 patients annually use a home infusion therapy delivery system. Typically, patients include the elderly with chronic diseases like cancer, patients with either Crohns disease, HIV or other immune system disorders, and patients suffering from chronic pain. Many of these patients require infusion treatment over a long duration such as months or even years.
One characteristic of home IV drug therapy, in contrast to hospital administered therapy, is that a nurse is not always present or readily available. To provide safe and effective treatment, home infusion therapy usually requires that the patient himself, or other non-professional caregiver, such as a relative, administer IV fluids. Special training is required because many home care patients on IV therapy require multiple drugs or multiple doses of the same drug each day. The average nursing visit to a home infusion therapy patient is typically about 90 minutes including commuting time. The typical patient gets between 1 and 4 nursing visits per week, but has to take IV medications daily. Since the cost of daily care by a nurse is not usually covered by most insurers, the cost of attention by a nurse is most economically applied in training the patent or other amateur caregiver and in monitoring the therapy program.
In the home care situation non-compliance, over-medication or under-compliance with the IV therapy protocol is a serious issue and quite prevalent. For instance, non-compliance (not taking a medication) or under compliance (taking fewer or smaller dosages than prescribed) occurs in up to approximately one-third to one-half of elderly home therapy patients. Typical compliance related problems include forgetting to follow the specified procedure for administration of the IV medication, forgetting to turn on the various devices used to administer the IV medication and forgetting to turn off a medical device which then delivers too much medication (over-medication). Reasons for compliance related problems are varied and include poor communication, confusion or forgetfulness regarding the procedures and/or equipment, or even attempts to avoid the adverse side effects of IV medications and fluids. Misapplication of the home IV therapy protocol can have serious ramifications resulting in greatly increased home health care nursing expenses, re-hospitalization, and reduction in health status of the patient. Thus, there is a strong need for improved monitoring of patient compliance with the health care program. Benefits of such improved monitoring and compliance include, but are not limited to, improved health at a lower cost, while still remaining in the preferred home environment.
To properly monitor compliance with an IV therapy protocol, a device may be provided for monitoring the flow of IV medications and fluids. The IV fluids for a single patient are likely to come from several different sources or systems including IV pumps, IV fluid controllers, gravity drips, syringes, and other devices.
A typical gravity powered IV may be as simple as an IV bag hanging on a pole in which a nurse or care giver manually adjusts a valve to limit the flow rate, but not control it accurately, or it may use an electronic controller which optically counts the drops of fluid as they pass an optical sensor and then adjusts the flow rate accordingly. However, optical drop counting sensors only provides an indication that the fluid is flowing past the sensor when in a vertical orientation such as hanging from an IV pole. Thus the patient and IV delivery equipment must remain relatively stationary during the administration of the medication or fluid. Optical drop counters also function poorly at higher flow rates and higher line pressures, such as when a syringe is used, because the fluid moving past the drop counter tends to become a continuous stream rather than remaining discrete drops. Therefore, the optical drop counter technique cannot be adapted for use with all fluid sources.
An alternative to an optical drop counting sensor, or as a stand-alone measuring device, is a single point pressure transducer to measure the fluid pressure in the IV tubing at a selected point of measurement. This type of sensor is common in IV pumps and is used to indicate that the pump is generating a static pressure head and, correspondingly, causing fluid flow or backpressure in the event of an occlusion in the IV line. This type of sensor only determines line pressure at the selected point, and is only useful in monitoring the pressure caused by the IV pumping device and the related backpressure caused by moving fluids into the patient's body. However, this type of single-point pressure sensor is useful in many IV delivery systems to determine if fluid pressures are at correct levels, and to detect changes in fluid pressure which are indicative of an occluded or collapsed vein. Often, when a certain threshold pressure is detected in a device using this type of sensor, an alarm is sounded to warn of a flow problem. This type of device measures changes in the static line pressure of a fluid line, but is unable to determine if a patient is following proper IV drug administration procedures and cannot differentiate between changes in pressure due to fluid flow versus some other cause, such as an occlusion in which there is actually no fluid flow.
Increased backpressure in an IV fluid line causes problems, and, as described above, many IV fluid delivery systems use a sensor to determine when high backpressure develops, i.e. , greater than a few inches of water, for instance when an infiltration of tissue occurs or the tubing becomes occluded. Upon the detection of a significant backpressure, the device sounds an alarm and may function to automatically discontinue the delivery of the IV medication and fluids. Therefore, it is important that any device used to monitor whether or not fluid is flowing does not cause a substantial increase in backpressure or a false occlusion alarm might be triggered.
Other alternatives use indirect methods to monitor the flow of IV fluids. For instance, the speed and number of rotations in a pump mechanism may be monitored to indirectly determine when fluid flow is occuring. This is useful for flows caused by an IV pump, but is of no value to patients who also receive gravity drips or fluids via syringe. Since nearly all infusion therapy patients must perform venous access device maintenance procedures, such as a heparin flush via syringe to maintain the patency of their IV lines, this pump rotation technique is not of value for monitoring all infusions.
The time usage for an IV delivery system may be recorded to prepare bills to patients. Typically, the information is printed or stored in an electronic memory device such as the electronic controls for the drop counter or IV pump. The information may be used to determine which of several patients are using the IV system being monitored, it may be used to coordinate several IV delivery systems with a centrally managed pump, or it may be used to facilitate billing and reimbursement. Unfortunately, none of these systems accommodate tracking of fluid delivered from a variety of sources such as to a patient who receives syringes, gravity drips, and IV pump infusions. The present invention provides an improved flow indicator switch, which overcomes the above-mentioned limitations of the prior art.
SUMMARY OF THE DISCLOSURE
The present invention is an IV system which provides certain monitoring advantages. An electronic data processing and storage device is used in conjunction with a unique flow indicator switch to record events in the IV infusion process. The processor may be connected in real time or may be used simply as a data recorder for later analysis. If used in real time the processing device is used to interpret signals related to IV flow, to provide instructions on how to properly sense whether fluid flow is occurring, and on when to inform the user to use the IV system or even to take other medications, vis-a-vis, oral or injection therapy, etc.
In the preferred embodiment of the present invention, an IV infusion system provides a flow indicator to monitor a flow of fluid through a fluid flow path. The flow indicator includes a switch having a movable switch member that is forced to move by direct viscous forces against it within the flow path, so that it moves in the direction of fluid flow. The movable switch member can sense a change in system flow including positive flow startup from stagnation in order to indicate that fluid flow has stopped or started. Optical elements including an infrared emitter and detector sense the change of position of the movable switch member. A spring element provides a restoring force to return the movable switch member to a null position indicating "no flow" when fluid flow has ceased. The force exerted by the spring element is adjusted to sense flow rates as low as 3.0 milliliters per hour.
Further, the flow indicator switch has a variable orifice positioned in a shaped fluid passageway in the form of an annulus. The orifice changes in cross-sectional size depending upon the position of the movable switch member. The cross-sectional area of the orifice is designed to enhance sensitivity to low fluid flows when the orifice has a smaller cross-sectional area, as well as to limit backpressure generated by higher fluid flow when the orifice has a larger cross-sectional area. In the preferred embodiment, the increase in backpressure is limited to about 4 inches of water with flow rates as high as 3600 milliliters per hour. In the preferred embodiment, the flow indicator switch functions equally well at line pressures from a fraction of an inch of water to over 60 pounds per square inch pressure because no occlusion of the flowpath occurs. Therefore, the flow indicator switch is not an occlusive device and does not react to changes in static pressure.
The processor is preferably operationally coupled to the flow indicator switch, to monitor the time and date of starts and stops of IV fluid flow in the system. One preferred embodiment of the present invention provides for the processor to be housed in a case about the size of a wrist watch so that it is highly portable for wearing on the person. This provides several key advantages and benefits to the infusion patient which would not otherwise become possible.
The processor and the flow indicator may be operationally coupled by fluid conduits, electrical conductors, wireless transmitters and receivers, or the like. The processor includes a memory storage device which retains information related to the programmed IV protocol and the actual time of start and stop events. The processor may of course be interconnected with a computer or other high speed data device for data archiving purposes and for further data analysis. In the preferred embodiment, the processor is serially coupled with a notebook PC that downloads prescribed IV protocols and uploads actual fluid flow start/stop events for comparison. The downloaded and uploaded data may include fluid flow events from any or all sources of fluid including, but not limited to, IV pumps, gravity drips, and syringes.
The flow indicator switch may operate in any attitude providing an advantage over prior apparatus. Moreover, the flow indicator switch housing is formed with a fluid flow path that is easily de-aired by a flow of fluid through the flow indicator switch housing. The flow indicator switch is a passive device, in which the movable switch member is actuated by the fluid flow through the tube. It can have a sensitivity to low fluid flows of less than or equal to 3.0 milliliters per hour and a backpressure limited to less than or equal to 4.0 inch of water line pressure at higher flow rates common to intravenous drug therapy, such as 3600 milliliters per hour. The flow indicator switch can work well with pulsed fluid flows without triggering a false alarm in the fluid delivery equipment.
Another advantage is that the small size and portability of the flow indicator switch precludes the necessity of having the patient attach and detach the device each time it is used. It may be attached to the patient's IV catheter for long periods of time. Also, since it is a passive device, it requires less electrical power and maintenance, thereby reducing health care costs. It may be connected to a catheter or IV tubes by standard connectors typically used on common IV equipment, or it may be an integral part of the IV catheter tube assembly.
Other features and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, various features of the several embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
A detailed description of embodiments of the invention will be made with reference to the accompanying drawings, wherein like numerals designate corresponding parts in the several figures, in such drawings:
FIG. 1 is a perspective view showing on overview of the present invention in a general orientation as applied to a patient in a wrist or arm mounted embodiment;
FIG. 2 is a schematic representation of a first prefered embodiment of the present invention of FIG. 1 shown as a simple flow indicator switch held within the case shown in FIG. 1, wherein some dimensions are shown exaggerated for better understanding of the principles involved, and particularly showing a flow conduit, inlet and outlet orifices, stem body, and light emitter and detector of the preferred embodiment;
FIG. 2A is a cross-sectional view of the flow indicator switch taken along lines 2A--2A of FIG. 2 and particularly showing the preferred relationship between a proximal shoulder, the fluid conductor and an end of the stem body, wherein some dimensions are shown exaggerated for better understanding of the principles;
FIG. 2B is a schematic representation similar to that of FIG. 2 showing an alternate position of the stem body of the invention;
FIG. 3 is a schematic representation of a second prefered embodiment of the present invention of FIG. 1 shown as a flow rate indicator held within the case shown in FIG. 1, wherein some dimensions are Shown exaggerated for better understanding of the principles involved, and particularly showing a flow conduit, inlet and outlet orifices, stem body, and light emitter and detectors of the preferred embodiment;
FIG. 3A is a cross-sectional view of the flow indicator switch taken along lines 3A--3A of FIG. 3 and particularly showing the preferred relationship between a proximal shoulder, the fluid conductor and an end of the stem body, wherein some dimensions are shown exaggerated for better understanding of the principles;
FIG. 3B is a schematic representation similar to that of FIG. 2 showing an alternate position of the stem body of the invention;
FIG. 4 is a general block diagram of an electronic circuit of the invention showing the preferred interconnections of various electrical elements of the invention; and
FIG. 5 is a view of the preferred layout of the face of a wrist watch sized event monitor housing of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows an intravenous system for conducting an IV fluid and for monitoring its flow, thus providing information on the delivery of, an IV fluid to a patient. Preferably, the device has a wristwatch sized event monitor 80 that attaches to a patient's arm or that may be taped to the patient's chest depending upon the site of the IV catheter. Event monitor 80 provides a display 85 that is easily viewed by the patient. As shown more clearly in FIG. 5, the display 85 can indicate the current time and date; the time and date of the next IV infusion process including which of 3 drugs to use; and the time and date of the last IV infusion process performed. The display 85 also may show similar information about oral medications, and the event monitor may also remind the patient to take oral medications similar to the way an electronic pill bottle reminds patients when to take a pill.
The monitoring apparatus for the intravenous fluid delivery is a system comprised of two primary components. The first being the event monitor 80, used to store and record electronic data pertaining to fluid flow. The second component is a flow indicator switch 10, through which the monitored fluid passes and within which fluid stop and start events are detected by optical means. Alternately, another embodiment permits the monitoring of fluid flow rate.
Referring now to FIGS. 2, 2A and 2B, an important component of the flow indicator switch 10 is shown as fluid conductor 20. The conductor 20 has a clear wall 22 that encloses a fluid space 24. The clear wall is advantageous for visually ensuring that air is removed from the IV fluid path. The fluid conductor 20 extends between proximal and distal fluid conduits 30P and 30D. An inlet interconnection means 87P connects the proximal conduit 30P to a source of intravenous fluid, preferably an IV bag 84, or a syringe (not shown) or an IV pumping device (not shown) well known to the field. An outlet interconnection means 87D connects the distal conduit 30D to an intravenous discharge device 88 that discharges the IV fluid to the patient's vein.
The conductor 20 has a conical shape having a slight wall divergence of approximately 0.3 to 2 degrees, so that it is larger at its distal end. A proximal and distal circular shoulders 33P and 33D are provided at the ends respectively of the conductor 20, the proximal shoulder 33P defining an inlet fluid orifice 35P, and the distal shoulder 33D defining an outlet orifice 3 5D.
In the preferred embodiment, an opaque stem body 40 for use with optically clear fluids, is a movable piston or plug element, and is provided within the fluid space 24 of the conductor 20. An alternate embodiment, to be discussed later, uses an optically clear stem body 40 for use with opaque fluids.
In the preferred embodiment the body 40 has a volume of 6.8586. times. 10.sup.-3 cubic centimeters and a density of approximately 1.25 grams per cubic centimeter. As shown in FIG. 2, the stem body 40 preferably has a cylindrical shape which is slightly smaller in diameter than the conductor 20. When the stem body 40 is positioned at the proximal end of the conductor 20 abutting the proximal shoulder 33P, the stem body 40 does not engage any portion of the conical wall 22. The stem body 40 has a generally flat surface 42 at the end that contacts the proximal annular shoulder 33P, and may have a relatively smooth (FIG. 2A) or a ridged (FIG. 3 A) outer surface 44 that provides a series of fluid pathways 46. The surface 44 and fluid pathways 46 are shown in FIGS. 3 and 3A in an exaggerated manner. The preferred dimensional clearance between stem body 40 and the proximal shoulder 33P is about 0. 0015 inches and this effective gap may often be accomplished by virtue of the natural texture or roughness of the surface of the materials without having to especially provide for grooved fluid pathways as shown in the aforementioned figures. A stem body biasing means 45, preferably a spring, urges the surface 42 of the stem body 40 in position against the proximal shoulder 33P, thus partially, but not fully, closing the fluid conductor 20 under static conditions. This partial closure allows at least some of the fluid to pass out of the indicator switch 10 in the direction away from the patient in the event that blood must be drawn from the patient or fluid must be removed from the line. It also allows for instantaneous equilibrium between pressure changes upstream or downstream of the stem body 40 in that upstream and downstream fluids are not mutually isolated. Occlusion of the flow path does not occur.
The spring constant of the biasing means 45 is preferably approximately 0.06 pounds per inch of deflection which means that the stem body 40 is displaced by a very slight flow of fluid into inlet 35P and out of outlet orifice 35D. It should be noted, however, that other spring constants and stem body masses may be selected for similar performance.
In the preferred embodiment shown in FIG. 2, a light emitter 50 is positioned outside of the conductor 20, lateral to the stem body 40, and a single light detector 55 is positioned directly across from the light emitter 50, on the opposite side of the conductor 20. As shown in FIG. 2, the left-hand side edge of the detector 55 is aligned with the proximal shoulder 33P and the base of the stem body 40. An opaque mask 56A is positioned between the light emitter 50 and the stem body 40, and another mask 56B is placed between the light detector 55 and the opposing side of the stem body 40. In another embodiment both masks 56A and 56B have tiny openings that are aligned in corresponding pairs in opposition across the fluid conductor. In the preferred embodiment, these openings are between 0.003 to 0.030 inches in diameter depending upon the power of the emitter 50 and the sensitivity of the detector 55 These openings in the masks 56A and 56B restrict light travel from the emitter 50, to a narrow light path 58 across the fluid conductor 20. As seen in FIG. 2, when the stem body 40 is in position against the proximal shoulder 33P, the light path 58 between the emitter 50 and the detector 55 is fully blocked by the opaque stem body 40, light is prevented from reaching the first light detector 55. However, as seen in FIG. 3, when the stem body 40 moves away from the proximal shoulder 33P, the light path 58 is provided. Thus, any change in position of the stem body 40 within fluid conductor 20 is easily determined by whether the light path 58 is blocked or not.
Although FIGS. 2 and 3 show an embodiment with a single light detector 55, any number of light detectors may be used as shown in FIGS. 6 and 7. In this alternative manner, an IV line with a constant flow, such as those used for KVO or "Keep Vein Open" applications, may be monitored for a meaningful change in flow rate. In the preferred embodiment, the emitter 50 and detectors 55 operate in infrared wavelengths.
As mentioned previously, in the preferred embodiment the stem body 40 is opaque in order to block the passage of light from the emitter 50 to the detector 55 when used with optically clear fluids. In certain instances however, a patient may receive IV fluids such as blood products or feeding solutions, that are not optically clear. The optical properties of these opaque solutions naturally attenuate light passing through them. This attenuation is proportional to the length of distance that the light must pass through the fluid. Therefore, an alternative embodiment of the stem body 40 uses a clear plastic which then limits the attenuation to that which occurs over a few thousandths of an inch. In this manner, the electronics may be modified to receive an optical signal for "no-flow" conditions and an opaque or blocked signal for "flow" conditions.
The intravenous system also includes a processor circuit 60 which may use a digital microprocessor chip to provide a logic program for interfacing the flow indicator switch into a therapeutic program of IV infusion and other medications. The circuit 60 preferably provides a means for using electrical signals from the light detector 55 to store IV fluid flow event information. Intermittently, it is possible that non-fluidic events, such as the motion of a patient, may cause spurious signals due to minor displacements of the stem body 40. Testing has shown that these spurious signals are of short duration, such as a fraction of a second. The Event Monitor 80 houses the processor circuit 60 which also includes logic for determining minimum "Flow On" time periods and intervals to remove most spurious signals from the log of flow events stored in memory.
Thus, in use, the proximal conduit 30P is connected to an IV bag or other fluid source, and the distal conduit 30D connects to an intravenous discharge device interconnected with a vein. Both conduits 30P and 30D and the conductor 20 are filled with IV fluid and desired prior to attaching to the patient, and the stem body 40 is nominally positioned against the proximal shoulder 33P indicating a no flow condition. The system remains static until flow from the IV bag or other fluid source is activated and the stagnation pressure due to fluid motion against the stem body 40 increases. The force on stem body 40 overcomes the restoring force of the biasing means 45, causing stem body 40 to move away from the proximal shoulder 33 P. This allows fluid which flows from the conduit 30P and through the inlet orifice 35P to be immediately sensed. The force of the fluid flow moves stem body 40 to a position within the fluid conductor 20 where a state of dynamic equilibrium is achieved between the force of fluid against stem body 40 and the restoring force. As stem body 40 moves further toward the distal end of the fluid conductor 20, as is typical at higher flow rates, the annular flow path area between the stem body 40 and the conical conductor wall 22 becomes larger, thereby increasing flow conductance in the conductor 20. Therefore a nonlinear relationship is developed between stem body displacement and conductance such that backpressure is minimized very quickly.
In particular, when the stem body 40 is positioned against the shoulder 33P, as shown in FIG. 2, it blocks light from arriving at the leftmost edge of light sensor 55. This leftmost edge of light sensor 55 is particularly of interest in establishing if fluid in the system is static, or is flowing. Further, the amount of light reaching the leftmost edge of light sensor 55 does not have to saturate the photodector means in light sensor 55. In the preferred embodiment, a signal of about 300 millivolts is generated when the light sensor 55 is fully saturated with light when both tiny openings 56A and 56B are fully exposed. However, an almost minuscule change in position of stem body 40 will cause a smaller change in voltage from 0.0 millivolts (totally opaque) to 0.5 millivolts because the leftmost edge of light sensor 55 is partially illuminated. This smaller change is voltage is used to determine that fluid motion has commenced or ceased. Thus the signal induced by the leftmost edge of light sensor 55 is used in the preferred embodiment to determine the "flow ON/OFF" time periods. The light detector 55 signals are used in the processor circuit 60, thereby to log start and stop of fluid flow.
The processor circuit 60 displays information concerning the infusion and other medication schedule and also the results of past IV activity on a liquid crystal display or other display apparatus. A clock 90 and an electronic storage means 95 are made a part of circuit 60 as necessary elements for identifying and recording the time of day at start, time of day at stop, and time of day at change in IV flow rate with each associated flow rate change. Results of IV activity may be caused to read-out on display 85 or may be uploaded to a traditional computer system such as a PC or notebook computer with a serial communications port.
While the invention has been described with reference to a preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: BROWN; ERIC W | | Assignee/Applicant First: BROWN; ERIC W | | Assignee - Standardized: BROWN; ERIC W | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: Macro Search Corp. | Scott, Gene | | Attorney/Agent - w/Address: Macro Search Corp. | Scott Gene | | Correspondent: | | Correspondent - w/Address: | | Examiner: Yasko, John D. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1995-08-29 | | Publication Month: 08 | | Publication Year: 1995 | | Application Number: US1994360994A | | Application Country: US | | Application Date: 1994-12-20 | | Application Month: 12 | | Application Year: 1994 | | Application with US Provisional: US1994360994A | 1994-12-20 | | Priority Number: US1994360994A | | Priority Country: US | | Priority Date: 1994-12-20 | | Priority Date - Earliest: 1994-12-20 | | Priority Month: 12 | | Priority Year(s): 1994 | | Earliest Priority Year: 1994 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005168, G01P001300 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
G01P001300
| G
| G01
| G01P
| G01P0013
| G01P001300
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/16886
G01P 13/0086
| Y10S 128/13
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604246, 128DIG13, 604065 | | US Class (divided): 604/246, 128/DIG13, 604/065 | | US Class - Main: 604246 | | US Class - Original: 604246 | 604065 | 128DIG13 | | ECLA: A61M0005168M, G01P001300C2 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US5376070A
| 1994-12-27
| Purvis Richard E.
| MINIMED INC
| -
| 0 (Examiner)
|
| Title: Data transfer system for an infusion pump |
| |
US4976687A
| 1990-12-11
| Martin James
| MARTIN JAMES
| -
| 0 (Examiner)
|
| Title: Apparatus for controlling the supplying of intravenous fluids |
| |
US5356378A
| 1994-10-18
| Doan David B.
| IVAC CORP
| -
| 0 (Examiner)
|
| Title: Fluid line condition detection |
| |
US5395320A
| 1995-03-07
| Padda Shan
| SABRATEK CORP
| -
| 0 (Examiner)
|
| Title: Programmable infusion pump with interchangeable tubing |
| |
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| TYCO HEALTHCARE
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US20110077638A1
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US6110153A
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| MEDRAD INC
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| ASANTE SOLUTIONS INC
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| ZEVEX INC
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| 2011-11-22
| KOIKE KAZUHIRO
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| BUCCIAGLIA JOSEPH D
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US8556869B2
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| 2013-10-29
| CUNNINGHAM JAMES S
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| RULE PETER
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| RACHLIN THOMAS M
|
WO1999008745A1
| 1999-02-25
| LVAD TECHNOLOGY INC
|
WO2002007808A1
| 2002-01-31
| DISETRONIC LICENSING AG
|
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| ROCHE DIAGNOSTICS GMBH
|
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|
| | Count of Citing Patents: 50 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2003-10-28
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 2003-08-29 |
| |
2003-08-29
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
2003-03-19
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
2000-05-30
| AS
| -
|
| Description: ASSIGNMENT REMOTE MEDICAL CORPORATION, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:010881/0315 2000-05-25 |
| |
1998-12-29
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
| | Post-Issuance (US): EXPI Expiration 2003-08-29 2003 2003-10-28 2003 DUE TO FAILURE TO PAY MAINTENANCE FEES | | Maintenance Status (US): E2 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
REMOTE MEDICAL CORPORATION,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2000-05-25
| 010881/0315
| 2000-05-30
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: GENE SCOTT PATENT LAW & VENTURE GROUP 3151 AIRWAY AVE., SUITE K-105 COSTA MESA, CA 92626 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
REMOTE MEDICAL CORPORATION,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2000-05-25
| 010881/0315
| 2000-05-30
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: GENE SCOTT PATENT LAW & VENTURE GROUP 3151 AIRWAY AVE., SUITE K-105 COSTA MESA, CA 92626 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US5445622A
| 19950829
| Brown Eric W.
| BROWN; ERIC W
|
| Title: Flow switch device for medical applications |
| |
US6290681B1
| 20010918
| Brown Eric W.
| REMOTE MEDICAL CORP
|
| Title: Flow monitoring device for medical application |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5445622A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5445622A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 17/43 | | US5359327A | A/D converter system with interface and passive voltage reference source | | Publication Number: US5359327A | | Title: A/D converter system with interface and passive voltage reference source | | Title (Original): A/D converter system with interface and passive voltage reference source | | Title (English): A/D converter system with interface and passive voltage reference source | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: A=D converter system having interface for use with small signals has power source that is remotely located relative to A=D converter with auto zero setting facility, to reduce interference noise from power source | Abstract:
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. | Abstract (English):
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip. The analog to digital chip uses the voltage reference signal to set the full scale input range for the signal conversion, and the voltage reference signal is attenuated to correspond to the full scale range of the analog signal. | | Abstract (Spanish): | Claims:
What is claimed is:
1. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
an interface circuit; and
*
an A/D convertor circuit coupled to the interface circuit, the A/D converter circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
2. A system according to claim 1, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
3. A system according to claim 1, wherein the passive attenuation circuit includes a resistor network.
4. A system according to claim 3, wherein the resistor network and a capacitor define a single pole low pass filter to attenuate high frequency noise.
5. A system according to claim 4, wherein the single pole filter attenuates the noise above 32 Hz.
6. A system according to claim 1, further comprising a selector for selecting a value from multiple possible values of attenuation of the voltage reference signal from the attenuation circuit.
7. A system according to claim 1, wherein the noise for the system is less than about 10 mV peak-to-peak.
8. A system according to claim 1, wherein the noise for the system is less than about 10 μV peak-to-peak.
9. A system according to claim 1, wherein the interface circuit can accommodate at least eight A/D converter circuits.
10. A system according to claim 9, wherein the interface circuit can be chained together with at least one additional interface circuit.
11. A system according to claim 10, wherein the interface circuit is chained with as many as thirty two other interface circuits, such that as many as 256 A/D converter circuits may be supported.
12. A system according to claim 1, wherein the A/D convertor circuit converts DC signals.
13. A system according to claim 1, wherein the interface drives the A/D convertor circuit serially with at least one of a plurality of A/D convertor circuits.
14. A system according to claim 1, wherein the A/D convertor circuit includes a driver circuit to drive at least one analog transducer.
15. A system according to claim 1, further including a power source, wherein the A/D convertor circuit is located separate and apart from the power source to reduce noise interference from the power source.
16. A system according to claim 1, further including a personal computer connected to the interface circuit, wherein the system is controlled and driven by the personal computer.
17. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
a personal computer; and
*
an A/D convertor circuit coupled to the personal computer, the A/D circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
18. A system according to claim 17, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
19. A system according to claim 17, wherein the personal computer drives the A/D convertor circuit in parallel with at least one other A/D convertor circuit.
20. An A/D circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog to digital conversion chip; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip; and wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
21. A circuit according to claim 20, wherein the passive attenuation circuit comprises a resistor network.
22. A circuit according to claim 21, wherein the resistor network and a capacitor are included in a single pole low pass filter to attenuate high frequency noise.
23. A circuit according to claim 20, wherein the diode is a zener diode.
24. A circuit according to claim 20, wherein the A/D converter circuit includes a multiplexer chip to selectively direct the analog signal to different filters and wherein the multiplexer chip provides the analog to conversion chip with the filtered analog signal.
25. A circuit according to claim 20, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
26. A circuit according to claim 20, wherein the A/D convertor circuit converts DC signals.
27. A circuit according to claim 20, wherein the A/D convertor circuit includes a driver circuit to drive at least one analog transducer.
28. A circuit according to claim 20, further including a power source, wherein the A/D convertor circuit is located separate and apart from the power source to reduce noise interference from the power source. | | Claims Count: 28 | Claims (English):
What is claimed is:
1. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
an interface circuit; and
*
an A/D convertor circuit coupled to the interface circuit, the A/D converter circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
2. A system according to claim 1, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
3. A system according to claim 1, wherein the passive attenuation circuit includes a resistor network.
4. A system according to claim 3, wherein the resistor network and a capacitor define a single pole low pass filter to attenuate high frequency noise.
5. A system according to claim 4, wherein the single pole filter attenuates the noise above 32 Hz.
6. A system according to claim 1, further comprising a selector for selecting a value from multiple possible values of attenuation of the voltage reference signal from the attenuation circuit.
7. A system according to claim 1, wherein the noise for the system is less than about 10 mV peak-to-peak.
8. A system according to claim 1, wherein the noise for the system is less than about 10 μV peak-to-peak.
9. A system according to claim 1, wherein the interface circuit can accommodate at least eight A/D converter circuits.
10. A system according to claim 9, wherein the interface circuit can be chained together with at least one additional interface circuit.
11. A system according to claim 10, wherein the interface circuit is chained with as many as thirty two other interface circuits, such that as many as 256 A/D converter circuits may be supported.
12. A system according to claim 1, wherein the A/D convertor circuit converts DC signals.
13. A system according to claim 1, wherein the interface drives the A/D convertor circuit serially with at least one of a plurality of A/D convertor circuits.
14. A system according to claim 1, wherein the A/D convertor circuit includes a driver circuit to drive at least one analog transducer.
15. A system according to claim 1, further including a power source, wherein the A/D convertor circuit is located separate and apart from the power source to reduce noise interference from the power source.
16. A system according to claim 1, further including a personal computer connected to the interface circuit, wherein the system is controlled and driven by the personal computer.
17. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
a personal computer; and
*
an A/D convertor circuit coupled to the personal computer, the A/D circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
18. A system according to claim 17, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
19. A system according to claim 17, wherein the personal computer drives the A/D convertor circuit in parallel with at least one other A/D convertor circuit.
20. An A/D circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog to digital conversion chip; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip; and wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
21. A circuit according to claim 20, wherein the passive attenuation circuit comprises a resistor network.
22. A circuit according to claim 21, wherein the resistor network and a capacitor are included in a single pole low pass filter to attenuate high frequency noise.
23. A circuit according to claim 20, wherein the diode is a zener diode.
24. A circuit according to claim 20, wherein the A/D converter circuit includes a multiplexer chip to selectively direct the analog signal to different filters and wherein the multiplexer chip provides the analog to conversion chip with the filtered analog signal.
25. A circuit according to claim 20, wherein the A/D circuit has an auto-zero capability to reduce effects of a system drift.
26. A circuit according to claim 20, wherein the A/D convertor circuit converts DC signals.
27. A circuit according to claim 20, wherein the A/D convertor circuit includes a driver circuit to drive at least one analog transducer.
28. A circuit according to claim 20, further including a power source, wherein the A/D convertor circuit is located separate and apart from the power source to reduce noise interference from the power source. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
an interface circuit; and
*
an A/D convertor circuit coupled to the interface circuit, the A/D converter circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal. | Independent Claims:
1. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
an interface circuit; and
*
an A/D convertor circuit coupled to the interface circuit, the A/D converter circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
17. An A/D converting system having low noise for converting an analog signal having a full scale input range into a digital signal, the system comprising:
*
a personal computer; and
*
an A/D convertor circuit coupled to the personal computer, the A/D circuit having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two diode terminals to provide a voltage reference signal, and the voltage reference signal being attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal.
20. An A/D circuit having low noise for converting an analog signal having a full scale input range into a digital signal, the circuit comprising:
*
an analog to digital conversion chip; and
*
a voltage reference source having a diode with two terminals and a passive attenuation circuit coupled in parallel between the two terminals to provide a voltage reference signal for use by the analog to digital conversion chip; and wherein the voltage reference signal is attenuated by the passive attenuation circuit to correspond to the full scale input range of the analog signal. | Description:
FIELD OF THE INVENTION
This invention relates to A/D converters and, in particular embodiments, an A/D converter system having an interface to a personal computer (PC) and an A/D converter circuit which uses a passively attenuated voltage reference.
BACKGROUND OF THE INVENTION
Numerous types of analog-to-digital (A/D) conversion products are presently available. Many of these products are sold as bare circuit boards which allow incorporation of various different A/D chips and are used with a variety of data gathering platforms. Other products are sold as complete systems that can be connected to a personal computer (PC) and which then allow the user to collect data from a variety of sources. However, typical prior art products are deficient in their capability for low noise or substantially noise free operation, which inhibits their ability to adequately function in data acquisition systems for monitoring small DC voltage signals.
Some modern data acquisition systems interface directly with a PC. This allows for the efficient display and processing of the results, often in real time (or just a few milliseconds delay from true real time). The PC also provides a convenient way to store the large volumes of data, obtained from measurements, for later post-processing analysis.
Data acquisition systems typically combine input circuitry with an analog-to-digital converter (ADC) chip. Generally, the input circuitry of such systems receive input signals from a variety of transducers and the ADC produces digital outputs proportional to the varying level of the voltage of the input signals. ADCs typically have a full scale input voltage range of .+-.2.5 to .+-.5 V. To process a small DC voltage signal (i.e., a signal significantly less than the full scale input of the ADC), traditional systems typically employ one or more signal amplifiers to increase the small input voltage signal to correspondingly match the full scale voltage input range of the ADC chip. One drawback to this approach is that the amplification process introduces additional errors (i.e., noise) into the analog signal being amplified. Another common source of error and noise is the use of a multiplexer to sample several different analog inputs with a single ADC chip. This causes noise and spurious signal offsets due to the capacitive charge injection caused by switching between different wires containing the different analog inputs (e.g., often this noise plus offset is on the order of 10 mV peak to peak; see also FIG. 10) and can prevent the accurate measurement of small signals.
If the amplification is done correctly, then the full scale output of the amplified signal will match the full scale input in the A/D converter or at least use a significant portion of the ADC's full scale input voltage range. Therefore, amplification enables a user to view small signals with high resolution, since "extra bits" are added to the resolution. Thus, amplification of a .+-.0.5 V signal to a .+-.5.0 V signal which is converted in a .+-.5. 0 V full scale ADC provides a 10 time increase in resolution.
Although the small input signals are typically filtered prior to amplification in an attempt to reduce the amount of noise that will be amplified, these errors cannot be totally eliminated; and they are amplified along with the signal. Moreover, the amplification process itself adds noise to the signal. Therefore, as the signal is amplified to increase the resolution during a conversion process, more noise is added to the signal. This tends to make it more difficult to accurately process small signals and adds uncertainty to the resulting digital output.
A typical "error-budget" for a small transducer signal (or measurement signal), which is amplified to match the full scale input range of an A/D converter chip ("Signal.sub.atA/D ") in a general PC-based A/D converter system, is a follows:
1. the transducer's signal or real measurement ("Signal.sub. Device ");
2. the transducer's inherent, self-generated noise ("Noise.sub. Device ");
3. environmental noise which radiates into the shielded and unshielded wire leads that connect the transducer to the amplifier ("Noise.sub. AmpLeads ");
4. environmental noise which radiates into the shielded and unshielded wire leads that connect the amplifier to the A/D input ("Noise. sub. A/DLeads ");
5. noise from the internal components that make up the amplifier ("Noise.sub.AmpInt ");
6. noise from the external components that make up the amplifier ("Noise.sub.AmpExt ");
7. span errors from temperature induced drift that affect the amplifier's internal gain stage ("Gain.sub.AmpInt ");
8. span errors from temperature induced drift that affect the amplifier's gain through the external components ("Gain.sub.AmpExt ");
9. input offsets in the amplifier which are multiplied by the gain ("Offset.sub.AmpInput ");
10. output offsets in the amplifier which are constants ("Offset. sub. AmpOutput "); and
11. spurious signal errors due to multiplexing several analog inputs which have differing line capacitances and other sources of errors ("Signal.sub.Spurious ").
This error budget yields the following equation for the signal received at the input to the A/D chip: ##EQU1## where the Gain.sub.Ideal equals the amplifier's desired gain multiplier. Depending upon the actual circuit being evaluated, the Signal.sub.Spurious term may or may not be multiplied by the gain of the three Gain terms.
This Signal.sub.atA/D leads to the following equation for the resulting output resolution for the signal:
Number of Bit-counts from the A/D as a Digital Output=.+-. Integer[(Signal.sub.atA/D /V.sub.ref)×2.sup.n ]
Where n=the number of bits of resolution.
The above-described error budget is not the only source of errors. Additional measurement errors in the output signal are caused by the A/D convertor's voltage reference circuitry. Generally, A/D circuits use a voltage reference ("V.sub.ref ") signal to set the full-scale input of the ADC chip. The ADCs use a variety of comparison techniques to arrive at the number of bit-counts a signal value represents when compared to the full scale represented by the value of V.sub.ref. The V. sub.ref is assumed to represent the maximum number of bits in the ADC. For example, if the voltage reference is 100 and the Signal.sub.atA/D is 95; then the bit count in an 18 bit ADC is 249,036; on the other hand, if the Voltage reference is actually 101, then the bit count should be 246, 571--an error of 2,465. Therefore, small errors in the V.sub.ref result in errors in the digital output signal.
The affects of all these errors on the conversion of a small signal from analog to digital can be demonstrated through some simple tests. One such test measures the noise present in an A/D circuit when there is a zero voltage level input applied to the ADC. This is called a "zero voltage level noise test. " To perform the test for an actual real world application, the leads connecting the sensor to the PC based A/D circuit are disconnected and the positive and negative leads are tied together so that there is no voltage differential between them. Specifically, the leads are tied together as close to the sensor and as far from the PC as possible. This is because most sensors are located a distance from the PC in real world applications to prevent noise from the PC containing the A/D circuit from radiating into the sensor setup. Often the lead length distances are on the order of 6 to 20 feet or more. Typically, shielded cable is used with the shield tied to analog ground. Theoretically the results of this test should yield zero volts because any noise which radiates into the shielded cable or any capacitive effects on the cables in this zero voltage level noise test would be canceled out via the differential inputs, since the positive and negative sides of the ADC input see the same input voltages induced by the noise.
Most manufacturers perform a different version of this test, and the results of this alternate version of the test are often far better than the results achievable in the real world test described above. In the alternate version of this test, the manufacturer shorts the input pins of the ADC chip together as close as possible to the ADC chip, not as close as possible to the sensor or area of actual usage. Usually, the lead length is only a few inches long or even less than one inch for this test. This short lead length is usually comprised of the metallic traces on the actual printed circuit board to which the ADC chip is mounted and terminates at the connector mounted on the same printed circuit board. In the event that a multiplexer is present to sample several analog inputs to a single ADC chip, the short lead length also substantially reduces the effects of the line capacitance. Since the input signal is essentially 0 volts, the charge injection problem is minimized and a very good sounding specification may placed on the equipment. Therefore, no user can directly connect a device to the ADC circuit boards under the same conditions, and a circuit specification is determined for the system that has no bearing in the real world.
A typical real world input voltage test result is shown in FIG. 10. The results were generated by a conventional Analogic Corp. (Peabody, Mass.) High Speed DAS 16-bit analog-to-digital data collection board (Part No. HSDAS-16). The board is specified as having a resolution of 38 . mu.V (or 38×10.sup.-6 V) and is purported to have the capability to take accurate readings below 1 mV (or 1000×10.sup.-6 V). The board's specification also purports to have a maximum noise level of 76 . mu.V. However, in the test represented by FIG. 10, the product exhibited an inherent noise and offset of about 250-1000 μV RMS, and the peak-to-peak noise level often exceeded 10 mV. The larger peaks were the result of a multiplexer charge injection as different channels were scanned. During the test, the nominal on-board amplifier gain was set to 4.0 and approximately 6-8 feet of cable length was present between the area where the leads were tied together and the ADC chip on the printed circuit board. This long lead length was necessary because the PC radiates environmental noise that could be detected by the transducer to be used in this particular test setup. Also, this test setup involved the use of fluids and it was desirable to have the PC as far away as possible from the source of a potential spill or leak. The readings on eight differential inputs were scanned during this test.
In traditional ADC circuits, such as the HSDAS-16, the multiplexer is used to alternately measure several different analog voltage sources using a single ADC chip. The multiplexer also helps to protect the ADC chip from high voltages, such as a static discharge, that might damage the ADC chip.
Low pass filtering can help to smooth out the noise, but it does not have a significant affect on the offsets or uncertainty in the readings. The plot in FIG. 10 shows the results in only one channel, but each tested channel had a similar output curve with the only difference being the amount of the offset voltage errors.
Another test which can be performed is called a "fixed response transducer test". In this test, a pressure transducer is surrounded by a shielded, grounded metal case which is connected to the A/D data acquisition system. The pressure transducer is then given a thermally stable fixed head height of input pressure from a static column of water at room temperature. The thermal mass of the fluid is sufficient to prevent any measurable thermal drift in the sensor over a 1 to 10 minute test period. The fluid temperature during the test is monitored with a thermistor to within 0.1° C. The output of the transducer is then measured for noise. It is assumed that offsets and span errors cannot be measured with certainty, but they will still be within the transducer data. Tests performed on the Analogic system described above, yielded results which are quite similar to those shown in FIG. 10, but at a baseline voltage closer to the full scale analog signal from the pressure transducer (i.e., about 100 mV).
SUMMARY OF THE DISCLOSURE
It is an object of an embodiment of the present invention to provide an improved analog to digital converter circuit, such as for use with small signals and the like, and which obviates for practical purposes, the above mentioned real world limitations. In particular embodiments the improved analog to digital convertor circuit uses a passively provided voltage reference signal to substantially eliminate noise in the conversion from an analog to a digital signal.
According to an embodiment of the invention, an A/D converter circuit is used to convert an analog signal into a substantially noise free digital signal. The circuit includes a low noise analog-to-digital conversion chip (ADC) and a passive voltage reference source. The voltage reference source includes a diode with two terminals and a passive attenuation circuit. The attenuation circuit and the diode are coupled in parallel between the two diode terminals to provide a voltage reference signal for use by the ADC. The ADC uses the voltage reference signal to set the full scale input range used in the conversion operation. In preferred embodiments, the voltage reference signal is attenuated to closely match or correspond to the full scale input range of the analog signal. Moreover, the circuit is particularly well suited to measure small DC voltage signals.
In further embodiments of the present invention, the passive attenuation circuit defines a resistor in a resistor and capacitor network. The resistor and capacitor network may provide a single pole low pass filter to attenuate high frequency noise in the reference voltage measurement. Moreover, the ADC may be capable of performing an auto-zero to reduce effects of a system drift.
In still further embodiments, the A/D converter circuit may include a multiplexer chip coupled with filter networks to selectively filter the analog signal prior to sending the filtered signal to the ADC for conversion from an analog to digital signal. Moreover, the A/D convertor circuit may include current output circuitry (i.e., drivers) and connections which can be used to drive analog transducers. In preferred embodiments, an A/D convertor circuit has a power source that is remotely located relative to the ADC to reduce the noise interference from the power source.
In particular embodiments of the present invention, the A/D converter circuit is included in an A/D converting system. The A/D converting system converts an analog signal into a digital signal while minimizing noise. The system includes an interface circuit and an A/D convertor circuit, as described above, coupled to the interface circuit. Preferably, the system provides means for selecting the level of attenuation of the voltage reference signal provided by the passive attenuation circuit. In traditionally designed A/D converting systems, the total system noise is typically less than about 10 mV peak-to-peak. However, in the preferred embodiments the total system noise is typically less than about 10 μV peak-to-peak or an improvement by a factor of about 1000.
In further system embodiments, the interface can accommodate a plurality of (e.g., eight) A/D converter circuits. Further the interface circuit may be cascaded together with at least one additional interface circuit. Moreover, in preferred embodiments the interface circuit may be cascaded with as many as thirty two other interface circuits, such that as many as, for example, 256 A/D converter circuits may be supported.
In other embodiments, there is no interface circuit and the A/D convertor circuits are directly connected to a personal computer in parallel with at least one other A/D convertor circuit. However, in preferred embodiments, the system uses a personal computer connected to the interface circuit, and wherein the personal computer is used to control and drive the A/D converting system through the interface circuit.
Other features and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, various features of embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description of embodiments of the invention will be made with reference to the accompanying drawings, wherein like numerals designate corresponding parts in the several figures.
FIG. 1 is a block diagram of an A/D conversion system according to a first embodiment of the present invention.
FIG. 2 is a block diagram of an A/D conversion system according to a second embodiment of the present invention.
FIG. 3 is a block diagram of a variation of the second embodiments shown in FIGS. 2 and 3.
FIG. 4 is a block diagram of the interface unit used in the embodiment shown in FIG. 2.
FIGS. 5(a)-(d) illustrate a detailed circuit schematic of the interface unit shown in FIG. 4.
FIG. 6 is a block diagram of the A/D pods shown in the embodiments of FIGS. 1-3.
FIG. 7 is a circuit diagram of the voltage reference source illustrated in FIG. 6.
FIGS. 8(a)-(c) illustrate a detailed circuit schematic of the A/D pod shown in FIG. 6.
FIG. 9 is a plot of noise levels in an A/D convertor system according to an embodiment of the present invention.
FIG. 10 is a plot of noise levels in a prior art A/D convertor system.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Preferred embodiments of the present invention, relate to an A/D converter system used for measuring low level electrical signals in sensitive electronic apparatus, such as medical monitoring devices, seismic activity monitoring devices or the like. Commonly, these low level signals are generated by various forms of strain gauges or piezo-resistive transducers. However, further embodiments of the invention may be used to measure other types of signals which are converted from analog to digital signals. The A/D converter systems according to embodiments of the present invention are particularly well suited for sensitive measurements which present the user with a low signal to noise ratio.
Embodiments of the present invention are based in part on the principle that system noise may be minimized by reducing the number of noise inducing circuit components, especially active components, such as an amplifier or the like. Thus, embodiments of the present invention eliminate the amplifiers commonly used in A/D convertors to amplify the small input signal, and instead have an A/D circuit that will accept a low level signal directly. Moreover, since there are only a small number of ICs and discrete components in the low level signal path, thermally-induced junction voltage errors are minimized.
Further embodiments include such features as a software selectable filtering of the input signal, an on-board constant current source, jumper bridges to allow selectable full scale input ranges for the V.sub. ref, and overvoltage protection for the analog inputs. Moreover, the entire A/D converter and data acquisition circuit may be compact in size which allows it to be readily disposed in remote locations and to interface externally with a host processor (i.e., a PC) via serial or parallel data links. Thus, the A/D converter circuit may be positioned close to the transducer sensor, to minimize the length of the electrical connection (e.g., cable) between the A/D converter circuit and the transducer sensor, and therefore minimize the noise induced in the electrical connection.
Preferably, the A/D converter hardware is designed to readily connect to a standard PC serial port (known as RS-232 by most computer users) for transmitting data to the PC which provides data acquisition control and analysis functions. Thus, no special adapter cards have to be installed in the PC. Moreover, the use of the standard serial port allows the PC to be located a great distance from the ADC circuit and the transducer whose analog signal is being measured.
In the illustrated embodiments, remotely located A/D data acquisition circuits (A/D pods) perform the conversion of an analog signal to a digital signal. In some embodiments, as many as eight A/D pods may be connected to a microprocessor controlled interface circuit which obtains the data from each A/D pod. The A/D pod may be used in a freestanding manner or it may be a subsystem within a PC-based data acquisition system. When the A/D pod is connected to a PC, the data can be readily viewed and recorded in real time (or near real time). Also, the data may be analyzed or manipulated in real time (or near real time) for use by other instruments or equipment.
Certain embodiments of the invention are particularly suitable as a "test and measurement" instrument for engineers and scientists working with low level DC electrical signals (i.e., under 0.5 V), such as from pressure sensors, strain gages, or chromatography equipment. The A/D pod may also be incorporated directly into medical devices designed for processing very small physiological signals. Embodiments of the A/D pod system may be particularly well suited for providing a low noise reading from a medical pressure sensor used in a hospital or home health care environment, both of which are typically electrically noisy environments. In this type of real world application, the A/D pod must measure unamplified differential DC voltages of approximately 300 μV (or about 300×10.sup.6 V) to an accuracy better than 1% or about 3 μ V. Moreover, this type of differential signal is often superimposed on a DC signal that varies from about 1.0-200.0 mV. Therefore, the A/D pod should have a measurement accuracy of 3 ppm (parts per million). To achieve this accuracy with reasonable levels of certainty, it is necessary to measure a raw signal with a less than 1.0 μV resolution. Currently available PC based systems as described in the background section are inadequate for providing such measurements unless the analog signal is highly amplified, and then the signal is subject to the error factors discussed above.
FIG. 1 shows an A/D converter system 10 according to an embodiment of the present invention. This system includes a PC 12 coupled to two A/D pods 14 by data lines 16. In this embodiment, the PC is equipped with a parallel input/output (PIO) card, such as the Universal Digital I/O Interface (Model No. D-MAX54DIO48) sold by Personal Computing Tools, Inc. (Campbell, Calif.). The system 10 is capable of parallel processing the data from the two A/D pods 14 without an external auxiliary interface circuit. The A/D pods 14 interface directly with the PC 12 using line 16 connected to standard RJ-45 8 pin ports on the A/D pods 14 and the screw terminals on the PIO card within the PC 12. This parallel configuration allows the user to take as many as two measurements in real time for direct comparison of the results. In operation the A/D pods convert measurements from transducers (not shown) into digital signals which are then sent to the PC 12 for further processing and display. The received data can then be stored on the PC 12 for later access and/or post processing. In this embodiment, control command signals are supplied directly by the PC 12 to A/D pods 14 over lines 16. Power is provided by an external power supply. This embodiment may be currently limited to two parallel A/D pods 14 by the number of signal lines on the PIO card. However, PIO cards with more digital lines may accept more A/D pods 14.
A second embodiment of an A/D converter system is shown at reference numeral 20 in FIG. 2. The A/D convertor system 20 is composed of a PC 12, an interface unit 22 and a plurality (e.g., up to eight) A/D pods 14. The interface 22 is serially coupled to the PC 12 through line 24 using a RS-232 standard 9 pin port, and the A/D pods 14 are serially coupled to the interface 22 by lines 26 using a standard RJ-45 8 pin ports found on both the A/D pods 14 and the interface unit 22 circuit board. The interface unit 22 receives data from each of the A/D pods 14, and then forwards the received data to the PC 12 for processing over lines 24. As in the first embodiment, described above, the PC 12 can display and store the data for post processing.
The PC 12 is controlled by a host software program "TVIHOST" to communicate with the interface unit 22 and the A/D pods 14. A hard copy of a preferred embodiment of the TVIHOST program is attached as Appendix A as an example. However, further embodiments may employ other suitable programs. Preferably, the program controls the PC 12 to provide command signals to the interface unit 22 which then translates and passes command signals on to the appropriately selected A/D pods 14. The program also controls storage operations for storing of the collected data on suitable storage media, such as magnetic disks or the like, for later analysis of the data, as well as real time waveform and/or numeric displays. For instance, if a numeric display mode is selected, a 1-second mean and RMS noise levels are computed and displayed in real time. The TVIHOST program generally collects and stores the data in a binary format for quicker processing and later access. However, this format is not generally compatible with spreadsheets or other analysis software. Therefore, the TVIHOST program preferably includes a second program, EXP, which may be used to translate binary data into several different standard tabular formats which are easily imported into commercially available PC-based spreadsheet programs.
The interface unit 22 is the gateway between the PC 12 and the A/D pods 14. The interface unit 22 handles and translates all commands from the PC 12. Thus, a standard PC 12 only requires a standard, built in RS-232 serial port and the software to access the interface and the A/D pods; no additional hardware is required. All time critical interfaces to the A/D pods 14, such as when to send data and receive commands, are handled by the interface unit 22. Moreover, the interface unit 22 supplies the power to the A/D pods 14. The interface unit 22 also handles other functions, for example, commanding an automatic zero level compensation that reduces the noise from thermal drift. It should be understood that the A/D pods 14 are not limited to use with the interface unit 22 of the present embodiment, but may be used with any suitable PC or interface.
FIG. 3 illustrates a third embodiment, which is a variation of the embodiment shown in FIG. 2. This system 30 has a plurality of interface units 22 that are serially cascaded together by lines 32 using standard RS-232 9 pin ports. It is possible to cascade a first plurality X (e.g., as many as thirty two) of separate interface units 22; and since each interface unit 22 can support a second plurality Y (e.g., up to eight) of separate A/D pods 14, the cascaded system 30 may monitor as many as X * Y (e.g., up to 256) individual A/D pods 14 using one PC 12. The first interface unit 22 in the cascade is connected by an RS-232 line 24 in the same manner as shown in FIG. 2. Each additional interface unit 22 is connected to an adjoining interface unit 22 by an RS-232 line 32. The cascade system 30 uses the same TVIHOST program described above, to allow the PC 12 to communicate with the multiple interfaces 22 and all of the connected A/D pods 14. Therefore, the A/D converter system 30 may be readily expanded as measurement needs grow.
FIG. 4 shows a block diagram of the interface unit 22 used in the embodiments illustrated in FIGS. 2 and 3. The interface unit 22 has a power supply 40, an interface control 42, and an A/D control 44. The power supply 40 provides the +5.0 V power for both the interface unit 22 and all attached A/D pods 14. The ability to supply power to the interface control 42 and the A/D pods 14 from the power supply 40 provides several advantages, including the advantage of minimizing the number of individual power sources required, and the advantage of avoiding a major source of environmental noise (the power supply), since the power supply is external to the remote A/D pod 14. However, it should be recognized that further embodiments of the interface unit 22 may provide other power levels, and the A/D pods 14 may be powered by an internal source rather than externally powered.
The interface control 42 interfaces with the host PC 12 through a host port 46, and to other cascaded interface units 22 through a cascade port 48. Ports 46 and 48 are standard RS-232 9 pin serial ports. The interface control 42 includes a programmed processor circuit (e.g., controlled by a program recorded in a ROM device) which allows the interface unit 22 to prioritize itself among the other cascaded units 22 and to properly time the delivery of data to the PC 12. Moreover, the interface control 42 functions as a translator which receives command signals from the PC 12 and converts them into command signals for the A/D pods 14. Because these timing and translating functions are performed by the interface 22, the individual A/D pods 14 may be relatively simple in construction and small in size.
The interface control 42 is responsible for sending the data received from the A/D pods 14 to the PC 12. Typically, the data is sent to the PC 12 as a differential digital signal, since this reduces the amount of information that must be sent and allows higher communication rates. The differential digital signal only transfers the lowest number of bits which have changed since the last analog-to-digital conversion. However, it should be recognized that, according to further embodiments and as a user selectable option in the TVIHOST software, the entire digital signal provided by the A/D pods 14 may be sent to the PC 12.
The A/D pods 14 are controlled by the A/D control 44 through interface ports 50. The interface unit 22 has eight RJ-45 standard 8 pin connector ports 50, and the A/D pods may be connected into any one of the ports 50 or in any order. The interface unit 22, through the A/D control 44, prioritizes and handles all communications to the A/D pods 14. The A/D control 44 communicates with the A/D pods to control filter methods, system timing and other measurement parameters. The A/D control 44 receives data from the individual pods 14 and then sends the data to the interface control 42 which translates the data into a differential digital signal to be sent to the PC 12.
FIGS. 5(a)-5(d) show a detailed circuit schematic of a preferred embodiment of an interface unit 22. The illustrated interface unit 22 uses a Z-World Engineering Inc. (Davis, Calif.) single board computer, known as the model SmartBlock. This computer board uses a Z80 18.6 Mhz microprocessor to translate and process the command signals and data transfer between the A/D pods 14 and the PC 12. The ROM device containing the interface unit 22 instruction set is mounted on the single board computer.
FIG. 6 shows a block diagram of an A/D pod 14 which may be used in the embodiments shown in FIGS. 1-3. The A/D pod 14 includes an interface unit I/O (Input/Output) 60, an ADC (Analog-to-Digital Chip) 62, a V.sub.ref (Voltage reference) source 64, a multiplexer 66 with filters, and a transducer input 68.
The interface unit I/O 60 supports communication with the interface unit 22. The I/O 60 uses an RJ-45 8 pin port to receive command signals from the PC 12 through the interface unit 22. The received command signals are used to control the A/D pods timing and how the A/D pod 14 will filter and convert the analog signal received from the transducer input 68 to a digital signal. Moreover, the I/O 60 receives a power signal and provides power to the A/D pod 14. The I/O 60 is connected to the ADC 62 which is used to control the other blocks in the A/D pod 14.
The ADC 62 receives command signals from the I/O 60, and provides command signals to control the multiplexer 66. The command signals from the ADC 62 determine which filters connected to the multiplexer 66 are used in processing the analog signal before conversion to a digital signal. The full scale input range to the ADC 62 is set by the V.sub.ref provided by the V.sub.ref source 64. Once the full scale input range is set, the filtered output signal from the multiplexer 66 is compared with the V.sub.ref signal and the ADC 62 produces a digitized signal based upon this comparison. The digitized signal is then sent by the ADC 62 to the interface unit I/O 60 where it is sent back to the PC 12 for display and further processing. In the preferred embodiments, the ADC 62 continuously converts the analog signal into a digital signal, and the interface unit 22 only transmits the digital signal to the PC 12 when a new update is required by the PC 12. This method tends to lighten the communication load and further simplify the design of the A/D pod 14. However, in other embodiments, the ADC 62 need not convert the signal continuously, and the user may select nearly any conversion rate slower than 16 times per second.
The transducer input 68 to the A/D pod 14 is used to receive the analog signal from the transducer (not shown) and provides the signal to the multiplexer 66 for filtering. In some embodiments of the present invention, the A/D pod 14 may be provided with a constant current source which can be used to power and drive the transducer. This can simplify the construction and cost of systems which use transducers with the A/D pods 14. However, the transducer may be internally powered or powered by a source other than the A/D pod 14. Other embodiments of the A/D pod 14 may include a constant voltage source or other suitable driver which can be used to power and drive other transducers.
The multiplexer 66 receives the analog signal from the transducer input 68 and filters the information prior to sending the analog signal to the ADC 62. In preferred embodiments of the present invention, the multiplexer has four filtering options. However, the multiplexer may utilize any number of filters and more than one multiplexer may be used. In addition to filtering, the multiplexer provides protection to the input terminals of the ADC chip from high voltages such as a static discharge.
The full scale input range of the ADC 62 is determined by the V. sub. ref signal which is produced by the V.sub.ref source 64. In preferred embodiments of the present invention, the V.sub.ref source 64 is a precision source that does not use active elements, such as an amplifier or a power supply, to generate the V.sub.ref voltage reference signal. Rather, the V.sub.ref is generated by a diode and passively attenuated to form an input range that closely matches the full scale input range of the unamplified analog signal. This removes a substantial portion of the noise sources that are found in the prior art A/D convertor circuits which utilize amplifiers to create a gain stage for the analog signal. Thus, the use of a V.sub.ref that is passively attenuated can provide significant advantages over the prior art systems discussed in the background section, in that this feature can result in a substantial reduction of noise in the converted signal.
FIG. 7 shows a circuit schematic of an embodiment of the V.sub. ref source 64 used by the A/D pod 14. The V.sub.ref source 64 does not use an amplification circuit to determine the full scale input range used by the ADC 62 (see FIG. 6). Rather, it is attenuated to match the range of the small analog signal. To provide the V.sub.ref, the power from an external source, such as the interface unit 22, is attenuated through a first resistor 70. One end of the resistor 70 is coupled to the power source and the other is coupled to a diode 72 and a passive attenuation circuit 74. The passive attenuation circuit 74 is coupled in parallel to the ends of the diode 72. Typically, the passive attenuation network is formed of one or more resistors 76 and one or more capacitors 78 connected in parallel, as shown in FIG. 7. In preferred embodiments, a precision zener diode is used with a resistor chip and a capacitor. However, the circuit may use any suitable diode or resistor which provides the proper level of attenuation. The passive attenuation circuit may also include a capacitor to form a single pole, low pass filter to reduce high frequency noise (e. g., greater than 32 Hz). In preferred embodiments of the present invention, the V.sub.ref is attenuated to provide a full scale input range of .+-.200 mV to .+-.500 mV which provides a resolution of approximately 0.763 μV to 1.907 μ V per count of the A/D converter.
FIGS. 8(a)-8(c) show a detailed circuit schematic of a preferred embodiment of the A/D pod 14. With regard to the analog-to-digital converter chip, the MAX132 converter chip (shown as U1 in FIG. 8(a) and manufactured by Maxim Corporation of Sunnyvale, Calif.) was selected. A MAX132 circuit provided a full scale input of about .+-.200 mV to .+-. 500 mV with good noise and drift levels. The ADC also incorporates features which eliminate 60 Hz noise sources from the acquired signal through an averaging technique. The A/D converting circuit also uses a multiplexer chip MAX359 (shown as U2 in FIG. 8(c)) to provide four analog signal filtering options of no signal filtering, 0.08 Hz, 0.8 Hz and 8 Hz. The filters are selected by pins P0 and P1 on the ADC. Finally the V.sub. ref source is shown in FIG. 8(b) using a zener diode (shown as D1) and a resistor chip (shown as R3) to provide the attenuated voltage reference. It should be understood that other diodes, and resistor and capacitor combinations may be used. By changing these components V.sub. ref signals of up to 1.2 V and 2.5 V are readily achievable. For instance, other jumper pad connections on the resistor chip may be used to obtain different V.sub. ref signals. In further embodiments, the jumper pads may be user selectable to provide a selectable V.sub.ref signal attenuation; however, this would probably require an additional multiplexer to facilitate the selection of the appropriate jumper positions and possibly the selection of a different integrating capacitor and resistor, depending on the range selected.
There are several advantages obtainable with a passively attenuated V. sub.ref. There is a reduction in the number of components needed to generate the digital signal, since neither the analog signal nor the V. sub.ref must be amplified. Therefore, the noise that would otherwise be generated by these additional components is not present and the system would exhibit a reduced (compared to signal amplifying systems) sensitivity to temperature drift due to the minimization of components, and thus error sources. Moreover, since amplifiers are not needed to provide the V.sub.ref or amplify the analog signal, the noise sources created by the amplification process may be completely eliminated. The result is less noise at the inputs of the ADC chip.
The A/D pod 14 is also externally powered, which can significantly reduce the noise in the resulting digital signal. The external power source permits the A/D pod to be located outside the noise filled environment within the PC 12 which may otherwise interfere with the ADC and other components of the A/D pod 14. Moreover, external powering allows the A/D pod 14 to be packaged in a small configuration and be located close to the transducer where the actual measurements are taken. Close proximity to the transducer reduces the line length between the ADC and the transducer. Thus, the ability to locate the ADC in a minimum noise environment and in close proximity to the measurement source can minimize the noise input to the ADC 62.
Therefore, embodiments of the present invention using a passively attenuated V.sub.ref and external power source yield the following equation for the signal at the A/D:
Signal.sub.atA/D =Signal.sub.Device .+-.Noise.sub.Device .+-. < 0.1 Noise.sub.A/DLeads
It can be readily appreciated that the above-equation has far fewer noise terms than the equation for the A/D converters in the prior art structures described in the background section.
Typical noise levels obtained in the above-described embodiments of the present invention are in the range of 4 μV RMS. The same tests, described in the background of the invention above, were performed on various embodiments of the present invention. The results showed that the circuits reduced the noise and offset problems found in real world applications of the prior art devices by a factor of 100 to 1000 times. A sample of the results from a zero level test are shown in FIG. 11. The combined noise and offset errors were reduced to under 5 μV RMS and about 8 μV peak-to-peak over long sampling periods. However, during shorter test periods, the results were even better (about 2-3 μV RMS and about 3-4 μV peak-to-peak).
Comparisons of the two noise plots in FIGS. 9 and 10 show that embodiments of the present invention exhibit significantly less noise than converter systems in the prior art. For example, if FIG. 9 were superimposed on FIG. 10 using the same vertical scale, the noise in the FIG. 9 plot would be a thinner line than can be printed on FIG. 10. This is because FIG. 10 shows noise in millivolts and FIG. 9 shows noise in microvolts (a difference of 1000 times).
While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention.
The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. | | Assignee/Applicant: BROWN ERIC W | LITTLEFIELD JAMES A | | Assignee/Applicant First: BROWN ERIC W | | Assignee - Standardized: BROWN ERIC W | LITTLEFIELD JAMES A | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 2 | | Inventor: Brown, Eric W. | Littlefield, James A. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Littlefield, James A. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Littlefield James A.,Newport Beach,CA,US | | Inventor Count: 2 | | Attorney/Agent: Spensley Horn Jubas & Lubitz | | Attorney/Agent - w/Address: Spensley Horn Jubas & Lubitz | | Correspondent: | | Correspondent - w/Address: | | Examiner: Hoff, Marc S. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1994-10-25 | | Publication Month: 10 | | Publication Year: 1994 | | Application Number: US199369029A | | Application Country: US | | Application Date: 1993-05-28 | | Application Month: 05 | | Application Year: 1993 | | Application with US Provisional: US199369029A | 1993-05-28 | | Priority Number: US199369029A | | Priority Country: US | | Priority Date: 1993-05-28 | | Priority Date - Earliest: 1993-05-28 | | Priority Month: 05 | | Priority Year(s): 1993 | | Earliest Priority Year: 1993 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: G05F000318, H03M000108, H03M000112 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
G05F000318
| G
| G05
| G05F
| G05F0003
| G05F000318
|
H03M000108
| H
| H03
| H03M
| H03M0001
| H03M000108
|
H03M000112
| H
| H03
| H03M
| H03M0001
| H03M000112
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| G05F 3/18
H03M 1/089
| H03M 1/12
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 341139, 327326, 327540, 341141, 307566 | | US Class (divided): 341/139, 327/326, 327/540, 341/141, 307/566 | | US Class - Main: 341139 | | US Class - Original: 341139 | 341141 | 307566 | | ECLA: G05F000318, H03M000108W, T03M000112 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Maxim, .+-.18-Bit ADC with Serial Interface Max 132 Manual, May 1992. | Maxim, .+-.18-Bit ADC with Serial Interface Max 132 EV Kit Manual, Jul. 1992. | | Count of Cited Refs - Non-patent: 2 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4222110A
| 1980-09-09
| Judell Neil H. K.
| HEWLETT PACKARD CO
| -
| 0 (Examiner)
|
| Title: Analog to digital converter system |
| |
JP32054217A
| -
| -
| -
| -
| -
|
| |
US4998106A
| 1991-03-05
| Koga Toyokastu
| MATSUSHITA ELECTRIC IND CO LTD
| -
| 0 (Examiner)
|
| Title: Reference voltage regulation apparatus for an automatic gain control system |
| |
US4733216A
| 1988-03-22
| Wright Danny O.
| ALLIED CORP
| -
| 0 (Examiner)
|
| Title: N+1 bit resolution from an N bit A/D converter |
| |
US4654632A
| 1987-03-31
| Yoshida Koichi
| MITSUBISHI ELECTRIC CORP
| -
| 0 (Examiner)
|
| Title: Analog-to-digital converter |
| |
JP59207732A
| 1984-11-24
| IMAMURA MAKOTO
| YOKOGAWA HOKUSHIN ELECTRIC
| -
| 0 (Examiner)
|
| Title: TWO STEP TYPE AD CONVERTER |
| |
US4933676A
| 1990-06-12
| Hauge David K.
| TECHNOLOGY 80 INC
| -
| 0 (Examiner)
|
| Title: Programmable multi-input A/D converter |
| |
JP3254217A
| 1991-11-13
| SHONO KATSUFUSA
| FUJIKURA LTD
| -
| 0 (Examiner)
|
| Title: SEMICONDUCTOR SENSOR |
| |
US4860011A
| 1989-08-22
| Colles Joseph H.
| BROOKTREE CORP
| -
| 0 (Examiner)
|
| Title: Flash analog-to-digital converter |
| |
US5010347A
| 1991-04-23
| Yukawa Akira
| NEC CORP
| -
| 0 (Examiner)
|
| Title: Analog-to-digital converter having an excellent signal-to-noise ratio for small signals |
| |
US4999627A
| 1991-03-12
| Agazzi Oscar E.
| AT & T BELL LAB
| -
| 0 (Examiner)
|
| Title: Analog-to-digital converter using prescribed signal components to improve resolution |
| |
US4990913A
| 1991-02-05
| Beauducel Claude
| INST FRANCAIS DU PETROLE
| -
| 0 (Examiner)
|
| Title: Analog to digital converter for highly dynamic signals, using a variable reference voltage to floating decimal point output |
| |
JP59027619A
| 1984-02-14
| MATSUDA MASAO
| FUJITSU LTD
| -
| 0 (Examiner)
|
| Title: ANALOG-DIGITAL CONVERTER |
| |
US5027117A
| 1991-06-25
| Yoshida Yoshiki
| RICOH KK
| -
| 0 (Examiner)
|
| Title: Conversion using a variable reference based on image density |
| |
US5023783A
| 1991-06-11
| Cohen Lawrence T.
| UNIV MELBOURNE
| -
| 0 (Examiner)
|
| Title: Evoked response audiometer for testing sleeping subjects |
| |
JP57025722A
| 1982-02-10
| YAMAGATA AKINORI
| NIPPON TELEGRAPH & TELEPHONE
| -
| 0 (Examiner)
|
| Title: ANALOG-TO-DIGITAL CONVERTER |
| |
US5184130A
| 1993-02-02
| Mangelsdorf Christopher W.
| ANALOG DEVICES INC
| -
| 0 (Examiner)
|
| Title: Multi-stage A/D converter |
| |
US5034745A
| 1991-07-23
| Kelly John H.
| BCT SPECTRUM INC
| -
| 0 (Examiner)
|
| Title: Data acquisition with vernier control |
| |
US4908623A
| 1990-03-13
| Ullestad David C.
| HONEYWELL INC
| -
| 0 (Examiner)
|
| Title: Apparatus and method for range control and supply voltage compensation in a dual slope analog to digital converter |
| |
US4827191A
| 1989-05-02
| Chapman Ronald H.
| MOTOROLA INC
| -
| 0 (Examiner)
|
| Title: Adaptive range/DC restoration circuit or use with analog to digital convertors |
| |
| | Count of Cited Refs - Patent: 20 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
US5467090A
| 1995-11-14
| HEWLETT PACKARD CO
|
US6842066B2
| 2005-01-11
| TOSHIBA KK
|
US6965332B2
| 2005-11-15
| ANALOG DEVICES INC
|
WO1999057815A1
| 1999-11-11
| ALORMAN ADVANCED MEDICAL TECHN
|
| | Count of Citing Patents: 4 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-12-24
| FP
| -
|
| Description: EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE 2002-10-25 |
| |
2002-10-25
| LAPS
| -
|
| Description: LAPSE FOR FAILURE TO PAY MAINTENANCE FEES |
| |
2002-05-14
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1998-03-11
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1993-05-28
| AS
| -
|
| Description: ASSIGNMENT TECHNOVIEW, INC., CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNORS:BROWN ERIC W.; LITTLEFIELD, JAMES A.; REEL/FRAME:006571/0725; SIGNING DATES FROM 19930526 TO 19930527 |
| |
| | Post-Issuance (US): EXPI Expiration 2002-10-25 2002 2002-12-24 2002 DUE TO FAILURE TO PAY MAINTENANCE FEES | | Maintenance Status (US): E2 | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN ERIC W.
| 1993-05-26
| 006571/0725
| 1993-05-28
|
LITTLEFIELD, JAMES A.
| 1993-05-27
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: PAUL H. KOVELMAN SPENSLEY HORN JUBAS & LUBITZ 1880 CENTURY PARK EAST, FIFTH FLOOR LOS ANGELES, CA 90067-1605 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN ERIC W.
| 1993-05-26
| 006571/0725
| 1993-05-28
|
LITTLEFIELD, JAMES A.
| 1993-05-27
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: PAUL H. KOVELMAN SPENSLEY HORN JUBAS & LUBITZ 1880 CENTURY PARK EAST, FIFTH FLOOR LOS ANGELES, CA 90067-1605 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US5359327A
| 19941025
| Brown Eric W.
| BROWN ERIC W
|
| Title: A/D converter system with interface and passive voltage reference source |
| |
US5488368A
| 19960130
| Brown Eric W.
| TECHNOVIEW INC
|
| Title: A/D converter system and method with temperature compensation |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5359327A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5359327A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 18/43 | | US5011378A | Pump tube mount and cartridge for infusion pump | | Publication Number: US5011378A | | Title: Pump tube mount and cartridge for infusion pump | | Title (Original): Pump tube mount and cartridge for infusion pump | | Title (English): Pump tube mount and cartridge for infusion pump | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Infusion pump system with multi:fluid cartridge has programmable controller for linear peristaltic pumps outputting to manifold | Abstract:
An infustion pump fluid source cartridge having a pump interface portion and a fluid source portion. The top edge of the cartridge is bevelled in the fluid source portion to permit bending of the fluid source portion to securely position the pump interface portion against the pump without distorting the pump interface portion. A pump tube mount is provided for insertion into such cartridge. The pump tube mount includes a uniquely shaped front wall and a rear wall which extends downward in order to butt up against a ledge. Tabs extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube is mounted in the tube mount by providing a cylindrical fitting having an indentation. The tube may be held in the indentation by a collar surrounding the tube in alignment with the indentation. | Abstract (English):
An infustion pump fluid source cartridge having a pump interface portion and a fluid source portion. The top edge of the cartridge is bevelled in the fluid source portion to permit bending of the fluid source portion to securely position the pump interface portion against the pump without distorting the pump interface portion. A pump tube mount is provided for insertion into such cartridge. The pump tube mount includes a uniquely shaped front wall and a rear wall which extends downward in order to butt up against a ledge. Tabs extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube is mounted in the tube mount by providing a cylindrical fitting having an indentation. The tube may be held in the indentation by a collar surrounding the tube in alignment with the indentation. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An infustion pump fluid source cartridge having a pump interface portion and a fluid source portion. The top edge of the cartridge is bevelled in the fluid source portion to permit bending of the fluid source portion to securely position the pump interface portion against the pump without distorting the pump interface portion. A pump tube mount is provided for insertion into such cartridge. The pump tube mount includes a uniquely shaped front wall and a rear wall which extends downward in order to butt up against a ledge. Tabs extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube is mounted in the tube mount by providing a cylindrical fitting having an indentation. The tube may be held in the indentation by a collar surrounding the tube in alignment with the indentation. | | Abstract (Spanish): | Claims:
We claim:
1. A pump tube mount comprising:
*
a front wall having a hollow outlet extending therefrom;
*
a rear wall having a hollow inlet;
*
means for connecting said front wall to said rear wall at a fixed distance from one another;
*
a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet;
*
a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and
*
said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall.
2. The pump tube mount of claim 1 wherein said tabs cause said rear wall to make a snapping noise when the mount is properly installed.
3. The pump tube mount of claim 1 wherein said front wall is shaped so as to securely fit into a mating opening in a fluid source cartridge.
4. The pump tube mount of claim 1 further comprising:
*
two elongated fittings, one extending from said front wall and the other extending from said rear wall, each of said fittings having a cylindrical exterior portion and an indentation in said exterior portion;
*
said tube being mounted on said fittings such that the exterior portion of each of said fittings makes surface contact with an inner circumference of said tube; and
*
two collars surrounding said tube, each at a position concentrically aligned with the indentation in one of said fittings.
5. The pump tube mount of claim 4 wherein the indentation in each of said fittings comprises an annular groove.
6. The pump tube mount of claim 4 wherein said tube is made of silicone.
7. The pump tube mount of claim 4 wherein said collars surround said tube tightly enough to force the inner circumference of said tube at least slightly into the indentations aligned with said collars.
8. A fluid source cartridge comprising:
*
a housing having two end walls connected by two sidewalls and providing a pump interface portion at one end and a fluid source portion at the other end, said sidewalls each having a top edge with a bevel so as to form a fulcrum between the pump interface portion of said housing and the end wall at the fluid source portion; and
*
means for engaging said cartridge with a pump extending from each of said two end walls.
9. The fluid source cartridge of claim 8 wherein said pump interface portion of said housing contains a compressible tube located above a rigid base.
10. The fluid source cartridge of claim 8 wherein the end wall in said pump interface portion has an opening shaped so as to mate securely with a similarly shaped wall on a pump tube mount.
11. The fluid source cartridge of claim 10 further comprising a retaining stump adjacent said opening to hold the wall of said pump tube mount in the opening.
12. The fluid source cartridge of claim 11 further comprising a ledge located near the fulcrum made by said sidewalls, said ledge having an upper edge and at least one lower edge such that when a rear wall of said pump tube mount is lowered over said ledge, tabs on said rear wall snap into said at least one lower edge.
13. The fluid source cartridge of claim 8 wherein said engaging means comprises a tab extending from the end wall at said fluid portion and three tabs extending from the top edge of the end wall at said pump interface portion.
14. A fluid source cartridge comprising:
*
a housing having a pump interface-portion and a fluid source portion, said pump interface portion having a top edge for lying flat against a pump and said fluid source portion having a top edge with one end adjacent the top edge of said pump interface portion and an other end where the edge is lower relative to the top edge of said pump interface portion;
*
means attached to said pump interface portion for interengaging a pump; and
*
means extending from said fluid source portion proximate to the other end of said top edge for making engagement with a latch member on said pump, such that when engaged said fluid source portion is bent towards said pump to hold said pump interface portion securely in position.
15. A fluid source cartridge comprising:
*
a housing with a pump interface portion having an end wall with an opening for mating with a front wall in a pump tube mount such that when mated said front wall is securely positioned in two dimensions within said opening;
*
a retaining stump in said housing to prevent said front wall of said mount from sliding into the housing and out of mating engagement with the end wall; and
*
a ledge in said housing against which a rear wall on said pump tube mount lies flat to prevent said front wall of said mount from sliding out of the housing, said ledge including a lower edge into which a tab on said rear wall extends to hold said rear wall in place.
16. The fluid source cartridge of claim 15 wherein said housing comprises a fulcrum located between said pump interface portion and an other end wall of housing.
17. The fluid source cartridge of claim 16 wherein said housing includes two sidewalls connecting the end wall with the other end wall and wherein said fulcrum is formed on said two sidewalls. | | Claims Count: 17 | Claims (English):
We claim:
1. A pump tube mount comprising:
*
a front wall having a hollow outlet extending therefrom;
*
a rear wall having a hollow inlet;
*
means for connecting said front wall to said rear wall at a fixed distance from one another;
*
a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet;
*
a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and
*
said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall.
2. The pump tube mount of claim 1 wherein said tabs cause said rear wall to make a snapping noise when the mount is properly installed.
3. The pump tube mount of claim 1 wherein said front wall is shaped so as to securely fit into a mating opening in a fluid source cartridge.
4. The pump tube mount of claim 1 further comprising:
*
two elongated fittings, one extending from said front wall and the other extending from said rear wall, each of said fittings having a cylindrical exterior portion and an indentation in said exterior portion;
*
said tube being mounted on said fittings such that the exterior portion of each of said fittings makes surface contact with an inner circumference of said tube; and
*
two collars surrounding said tube, each at a position concentrically aligned with the indentation in one of said fittings.
5. The pump tube mount of claim 4 wherein the indentation in each of said fittings comprises an annular groove.
6. The pump tube mount of claim 4 wherein said tube is made of silicone.
7. The pump tube mount of claim 4 wherein said collars surround said tube tightly enough to force the inner circumference of said tube at least slightly into the indentations aligned with said collars.
8. A fluid source cartridge comprising:
*
a housing having two end walls connected by two sidewalls and providing a pump interface portion at one end and a fluid source portion at the other end, said sidewalls each having a top edge with a bevel so as to form a fulcrum between the pump interface portion of said housing and the end wall at the fluid source portion; and
*
means for engaging said cartridge with a pump extending from each of said two end walls.
9. The fluid source cartridge of claim 8 wherein said pump interface portion of said housing contains a compressible tube located above a rigid base.
10. The fluid source cartridge of claim 8 wherein the end wall in said pump interface portion has an opening shaped so as to mate securely with a similarly shaped wall on a pump tube mount.
11. The fluid source cartridge of claim 10 further comprising a retaining stump adjacent said opening to hold the wall of said pump tube mount in the opening.
12. The fluid source cartridge of claim 11 further comprising a ledge located near the fulcrum made by said sidewalls, said ledge having an upper edge and at least one lower edge such that when a rear wall of said pump tube mount is lowered over said ledge, tabs on said rear wall snap into said at least one lower edge.
13. The fluid source cartridge of claim 8 wherein said engaging means comprises a tab extending from the end wall at said fluid portion and three tabs extending from the top edge of the end wall at said pump interface portion.
14. A fluid source cartridge comprising:
*
a housing having a pump interface-portion and a fluid source portion, said pump interface portion having a top edge for lying flat against a pump and said fluid source portion having a top edge with one end adjacent the top edge of said pump interface portion and an other end where the edge is lower relative to the top edge of said pump interface portion;
*
means attached to said pump interface portion for interengaging a pump; and
*
means extending from said fluid source portion proximate to the other end of said top edge for making engagement with a latch member on said pump, such that when engaged said fluid source portion is bent towards said pump to hold said pump interface portion securely in position.
15. A fluid source cartridge comprising:
*
a housing with a pump interface portion having an end wall with an opening for mating with a front wall in a pump tube mount such that when mated said front wall is securely positioned in two dimensions within said opening;
*
a retaining stump in said housing to prevent said front wall of said mount from sliding into the housing and out of mating engagement with the end wall; and
*
a ledge in said housing against which a rear wall on said pump tube mount lies flat to prevent said front wall of said mount from sliding out of the housing, said ledge including a lower edge into which a tab on said rear wall extends to hold said rear wall in place.
16. The fluid source cartridge of claim 15 wherein said housing comprises a fulcrum located between said pump interface portion and an other end wall of housing.
17. The fluid source cartridge of claim 16 wherein said housing includes two sidewalls connecting the end wall with the other end wall and wherein said fulcrum is formed on said two sidewalls. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A pump tube mount comprising:
*
a front wall having a hollow outlet extending therefrom;
*
a rear wall having a hollow inlet;
*
means for connecting said front wall to said rear wall at a fixed distance from one another;
*
a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet;
*
a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and
*
said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall. | Independent Claims:
1. A pump tube mount comprising:
*
a front wall having a hollow outlet extending therefrom;
*
a rear wall having a hollow inlet;
*
means for connecting said front wall to said rear wall at a fixed distance from one another;
*
a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet;
*
a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and
*
said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall.
8. A fluid source cartridge comprising:
*
a housing having two end walls connected by two sidewalls and providing a pump interface portion at one end and a fluid source portion at the other end, said sidewalls each having a top edge with a bevel so as to form a fulcrum between the pump interface portion of said housing and the end wall at the fluid source portion; and
*
means for engaging said cartridge with a pump extending from each of said two end walls.
14. A fluid source cartridge comprising:
*
a housing having a pump interface-portion and a fluid source portion, said pump interface portion having a top edge for lying flat against a pump and said fluid source portion having a top edge with one end adjacent the top edge of said pump interface portion and an other end where the edge is lower relative to the top edge of said pump interface portion;
*
means attached to said pump interface portion for interengaging a pump; and
*
means extending from said fluid source portion proximate to the other end of said top edge for making engagement with a latch member on said pump, such that when engaged said fluid source portion is bent towards said pump to hold said pump interface portion securely in position.
15. A fluid source cartridge comprising:
*
a housing with a pump interface portion having an end wall with an opening for mating with a front wall in a pump tube mount such that when mated said front wall is securely positioned in two dimensions within said opening;
*
a retaining stump in said housing to prevent said front wall of said mount from sliding into the housing and out of mating engagement with the end wall; and
*
a ledge in said housing against which a rear wall on said pump tube mount lies flat to prevent said front wall of said mount from sliding out of the housing, said ledge including a lower edge into which a tab on said rear wall extends to hold said rear wall in place. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a fluid source cartridge and a pump tube mount insertible into the cartridge.
It is an object of this invention to provide a cartridge and tube mount which accurately position a tube within an infusion pump to permit the automatic delivery of fluid at a precisely determined rate. It is desirable that such accuracy be obtained using low cost plastic pieces.
When a cartridge is inserted into a peristaltic pump, the pumping fingers must interact with the pump tube mounted in the cartridge to open and close the tube completely Any warping of the cartridge or any mispositioning of the tube may permit a leak when a finger is depressed against the tube Any such leak would result in an inaccurate infusion rate. Therefore, it is desirable that a cartridge and pump tube mount be provided which accurately positions the pump tube in three dimensions.
The pump tube used in an infusion pump cartridge is preferably made from a compressible material which is inert with respect to the fluids to be delivered through the tube. Such an inert, compressible material very often does not bond well with adhesives. Thus, in attaching such a tube to a plastic mount, a common method was to provide a fitting with pointed ridges projecting therefrom. The ridges would dig into the inner circumference of the tube and hold it in place. This has the disadvantage of possibly tearing the tube material. It is an object of the present invention to provide a mount for such a tube which does not subject the tube to tearing forces.
SUMMARY OF THE INVENTION
The present invention is directed to a fluid source cartridge and pump tube mount insertible into the cartridge. The tube mount features an elongated fitting having a cylindrical exterior portion and an indentation such as an angular groove about said exterior portion. A tube of compressible material is mounted on the fitting such that the exterior portion of the fitting makes surface contact with the inner surface of the tube. A collar surrounds the tube at the indentation. The collar can thus force the inner circumference of the tube into the indentation to securely hold the tube on the fitting.
The pump tube mount secures the tube between a front wall and a rear wall. A rigid base is located beneath the tube to support the tube against the pressure of the peristaltic pump fingers. The rear wall extends downwards and has tabs extending therefrom so that the mount snaps into place when the mount is properly installed into the cartridge. The tabs secure the mount in place, once properly installed. The front wall of the tube mount is uniquely shaped to match the shape of an opening in the cartridge. This advantageously helps to insure that the proper mounts are being used in the cartridge and to precisely locate the mount in the cartridge.
The fluid source cartridge itself is a housing with two end walls connected by two side walls. The side walls have a top edge which form a fulcrum between the portion of the cartridge bearing the tube mounts and the remainder of the cartridge. Thus, advantageously when the cartridge is locked onto the pump, rather than bowing the entire cartridge causing inaccuracy in the relative position between the pump fingers and the tube, bending is substantially limited to the portion of the cartridge behind the fulcrum away from the tube mount section. The present invention advantageously provides modularity such that the cartridge may support any number from one to four fluid sources, it being only necessary to provide the appropriate number of pump tube mounts in the cartridge.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 is an isometric view of a pump with a cartridge of the present invention.
FIG. 2 is a second isometric view of the cartridge of the present invention illustrating its relationship with a pump.
FIG. 3 is a bottom plan view of a pump for use with the present invention without the cartridge in place.
FIG. 4 is an end view of the pump of FIG. 3.
FIG. 5 is a side cross-sectional view of a pump and the cartridge of the present invention.
FIG. 6 is a plan view of a cartridge of the present invention.
FIG. 7 is a side elevational view of the cartridge of FIG. 6.
FIG. 8 is an elevational view of the cartridge of FIG. 6 taken along lines 8--8.
FIG. 9 is a perspective view of a cartridge of the present invention along with the pump tube mounts of the present invention.
FIG. 10 illustrates how a pump tube mount of the present invention is inserted into the cartridge of the present invention.
FIG. 11 is an isometric view of the pump tube mount of the present invention attached to a fluid source pouch.
FIG. 12 is a plan view of the pump tube mount of the present invention without the tube and its retaining rings.
FIG. 13 is an elevational view of the pump tube mount of FIG. 12.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, a pump housing 10 is provided for pumping fluid from a multiple fluid cartridge 20. The pump housing 10 is provided with a liquid crystal display 12, a keyboard 14 and as shown in FIG. 4, programming jack 16. The underside of the pump housing 10 forms a cavity for receiving the cartridge 20. The cavity extends through one end of the pump housing 10. At the open end of the housing, there are several cartridge retaining holes 18 for engaging tabs 34 on the cartridge.
The cartridge 20 houses one or more pump tube mounts 24. Each pump tube mount 24 is connected to a fluid source which is either stored in a bag or a pouch in a fluid source portion of the cartridge or stored on a bag hanging from an intravenous delivery pole. To connect with a bag hanging from a pole, the cartridge's fluid source portion may have a window through which lumens may be inserted to connect the bag with the tube mount. Each pump tube mount 24 includes a compressible tube 22 made from a material which is inert to the fluids which will be fed through the tube. At the outer end of the pump tube mount 24, a luer connector 26 serves as the outlet for delivering fluid into an output lumen.
Individual output lumens may be connected to each of the luer connectors 26. These lumens may remain separate or they may be fused together to form a multilumen tube for outputting the fluid to a connector for making connection with an implanted catheter, for example. The multilumen output tube may be connected to any of a variety of multilumen connectors. Three types of multilumen connectors are shown in the copending parent U.S. patent application Ser. No. 216,512, filed on July 8, 1988 owned by the same assignee as the present invention. The disclosure of said parent application is hereby incorporated by reference herein. A needle connector 28 may be used in which each lumen is connected to a hollow injection needle. The needle connector may be inserted through a silicone block to make connection with a connector for a multilumen catheter. Another option is a multilumen connector such as that described in co-pending U.S. patent application Ser. No. 178,673 filed on Apr. 7, 1988, owned by the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein. A third possibility for the multilumen output tube is to connect each lumen separately to a luer connector so that individual connections can be made to four separate catheter lines.
An alternative connector for delivering fluids from the cartridge to a patient may be a single lumen manifold 28 as shown in FIG. 1. The manifold 28 can be provided with four connectors 30 for securely attaching to the luer connectors 26, extending from the cartridge. Each of these connections may then lead to a single lumen 32. When this type of connector is used, it is normal practice to make the fluid source furthest from the manifold output a flushing solution With this arrangement, the pump generally delivers one solution at a time or one fluid in conjunction with the flushing solution Before switching from one solution to another, the flushing solution is delivered to clean out the single lumen so as to prevent intermixing of different fluid solutions. This would be necessary in the case of drugs which are either incompatible or which cause precipitation when mixed.
The cartridge 20 is provided with several positioning tabs 34 which extend from the front end of the cartridge. The tabs 34 are inserted into the holes 18 in the pump as shown in FIG. 2. The engagement of the tabs 34 with the holes 18 precisely positions one end of the pump interface portion of the cartridge 20 with respect to the pump 10.
Moreover, by providing at least three tabs 34 spread across the front end of the cartridge, the cartridge is supported across its entire width and bowing of the cartridge is avoided. A cartridge 20 of the present invention is preferably used with a pump having a key operated latch 36. The lock 36 engages a tab 38 extending from the rear end of the cartridge 20. As will be discussed below in greater detail with respect to FIGS. 6-8, the cartridge 20 has the top edge 39 which forms a fulcrum 72 at the rear of the pump tube mounts. The top edge 39 is bevelled from the fulcrum 72 near the rear of the pump tube mounts down to the rear end of the cartridge 20. When the cartridge 20 is inserted it must be pushed up against the pump. The latch 36 engages the tab 38 to lock the cartridge in a pushed up position providing tension in the cartridge 20. Advantageously, in accordance with the present invention, by locating the fulcrum of the top edge behind the pump interface portion carrying the pump tube mounts, the bending of the cartridge is substantially restricted between the fulcrum and the rear end of the cartridge 20. The tension provided by the lock provides a repeatable position for an inserted cartridge and the fulcrum ensures that the entire pump interface portion is secured flat against the pump. This is an important feature since if the cartridge were permitted to bow away from the pump in the pump interface portion, it is possible that one of the pump fingers would not fully close off a pump tube as required to provide precision infusion rates.
FIG. 2 illustrates flexible pouches 44 used as the fluid sources within the cartridge 20. Each fluid source pouch 44 is connected to a pump tube mount 24. At present, the following procedure is suggested for using the cartridges 20 when it is provided with empty pouches 44. The desired fluid is injected into the connector outlet 26, using a syringe or other conventional means. After filling the pouch 44 with the desired amount of fluid, the connector outlet 26 is attached to the output line. When all of the pouches are filled with their fluid, the cartridge may be inserted into the pump housing 10 and a purge cycle may be run on each of the fluid sources to pump out all of the air which may have gotten into the pouch or pump tube. After purging the air, the cartridge 20 is ready for use in an infusion.
Referring now to FIGS. 3 and 5, the presently preferred pump for use with the present invention is provided with a plurality, four in this case, of linear peristaltic pumps. The illustrated pump is a three finger pump, called such because of the three cams which are repeatedly lowered and raised to provide the desired pumping action Each pump thus activates three cam followers, including an output valve 46, a pump plunger 48 and an input valve 50. Power for the pump is provided by a battery pack which may be loaded into a cavity behind a battery cover 52 alongside the peristaltic pumps within the housing 10. Each pump is provided with its own motor 54 which turns a cam shaft 56. The cam shaft 56 is provided with a timing disk or encoder 58. The timing disk is solid except for a sector which is removed. The disk can thus be read by an optical timing circuit on a printed circuit board 60 to count the rotations, thereby controlling the rate and location of the cam shaft 56.
To maintain improved accuracy, the cam followers should be made to always press against the tube 22, even when in the open position. The pump tube 22 is supported relative to the cam followers by a rigid base 67. The action of the fulcrum in the cartridge 20 ensures that the rigid base 67 is always positioned a fixed distance from the cam followers on the pump.
Pumping is performed as follows. With the pump plunger 48 and the input valve 50 retracted, the output valve 46 is lowered to close off the fluid conduits This permits the pump tube 22 to fill with fluid. This is the preferred position whenever the pump is inactive. Next, the input valve 50 is lowered to close off the pump tube 22 and prevent fluid from flowing back into the fluid source 44. The cam shaft is then turned permitting the tube 22 to expand, pushing the output valve 46 to open. The pump plunger 48 is activated by the cam shaft to push fluid out of the tube 22 and through the outlet 26. Then the output valve 46 is again closed. The pump plunger 48 and the input valve 50 are permitted to open, thereby allowing the pump tube to refill with fluid. Thus, fluid is pumped out of the fluid source. The pump tube in the presently preferred embodiment has an inner diameter of 0.030 inches, an outer diameter of 0. 156 inches and a 50 durometer Shore A. The rate of pumping is controlled by knowing the precise volume pumped in each cycle and monitoring the number of pumping cycles per unit of time.
A programmable microprocessor is provided on a control circuit board 76. Each of the four pump motors is controlled by the controller board 76. Since each fluid source has its own pump and pump motor, the rate and sequence of fluid infusion is entirely flexible. Infusions may take place concurrently or sequentially and at any rate. The desired sequence and rates of infusion are programmed into the controller board 76 through the programming jacks 16. Thus, in accordance with the present pump, multiple fluid infusion treatments may be delivered to a patient in any number of sequences and rates. Thus, the pump provides physicians with great latitude for selecting multiple-fluid drug regimens for treating patient illnesses.
Referring now to FIGS. 6-8, the cartridge 20 of the present invention shall be described in greater detail. FIG. 6, illustrates a cartridge 20 of the type with a window 62. The window provides a hole through which lumens can be fed to connect the pump tubes 22 with fluid sources. A discontinuous dividing wall 64 separates the cartridge 20 into a pump interface portion 66 and a fluid source portion 68. The fluid source portion 68 may provide fluids through a window such as that shown in FIG. 6. Alternatively, the fluid source portion 68 may be filled with fluid source pouches 44. With the pouches 44, the cartridge 20 can be used by an ambulatory patient. The cartridge 20 with a window 62 permits the same pump apparatus to be used by a hospital in-patient. Alternatively, the fluid source portion 68 of the cartridge 20 can be made extra deep, as shown in FIG. 14, to provide room for a drug solution mini-bag. Such a mini-bag provides more volume of fluid than the pouches 44. The mini-bag of FIG. 14 includes an inclined floor to help urge the fluid in the mini-bags towards the opening in the bottom of the bag. As such, the pump apparatus can be used with the mini-bags to provide a portable infusion apparatus which can be used by a patient undergoing high fluid volume infusions in the home.
The tabs 34 secure one end of the pump interface portion of the cartridge flat against the pump. The top edge of the cartridge 20 is flat from at least the front end wall 70 to the dividing wall 64. Just beyond the dividing wall 64 in the fluid portion of the cartridge, a fulcrum 72 is formed by bevelling the top edge of the cartridge from the fulcrum down towards a rear wall 74 of the cartridge. In accordance with the presently preferred embodiment of the present invention, the bevelling results in a drop off of 40 thousands of an inch from the top edge 39 at the dividing wall 64 down to the top edge 39 of the end wall 74. When the cartridge 20 is inserted into a pump, the tabs 34 support one end of the cartridge securely within the pump. The person inserting the cartridge pushes the rear end of the cartridge against the pump so as to be able to close the latch 36 to engage a tab 38 on the rear end 74 of the cartridge. The latch 36 on the pump is turned by a key to swing it onto the tab 38. The latch 36 lifts the tab 38 up towards the pump. In the latched position, the top edge of the cartridge 20 at the end wall 74 is 20 thousands of an inch away from the pump. Thus, the locked latch 36 applies pressure against the rear end of the cartridge to bend it upwards 20 thousands of an inch from its resting position. The tension travels back to the fulcrum 72 and forces the fulcrum flush against the pump. Thus, all of the bending of the cartridge 20 caused by the 20 thousandth displacement appears in the fluid source portion. Consequently, with the fulcrum in a known repeatable position, the pump interface portion on the other side of the fulcrum is properly spaced relative to the pump and accurately positioned every time the cartridge is inserted.
Also shown in FIG. 7 is a ledge 75 formed by the dividing wall 64. The ledge 74 has an upper edge 77 at the level of the base of the pump interface portion of the cartridge. The ledge 75 has a lower edge 78 or a series of individual lower edges 78 which are provided for engaging the pump tube mounts.
The end wall 70 has a series of uniquely shaped openings 80 which accommodate the outlet ends of the pump tube mounts. Immediately behind each opening 80 is a retaining stump 82. The opening 80 is shaped to secure the front wall of the pump tube mount in two directions. The front wall is prevented from moving up and down or left and right when installed within the cartridge opening 80 Furthermore, the opening 80 is given a unique shape as if it were a lock for a key. Just as a key may be uniquely designed to fit into a lock, the front wall of a pump tube mount can be uniquely shaped to fit the unique shape of the opening 80. This feature helps to ensure that only the appropriate tube mounts are inserted into the cartridge. The retaining stump 82 prevents the wall from moving back into the cartridge. The final direction of freedom is secured by the interaction of the rear wall of the pump to mount with the ledge 75 of the cartridge.
The front wall 84 of a pump tube mount can be seen in FIG. 9. Extending from the front wall 84 is an outlet 26 which is preferably a female luer connector. Two side walls 86 connect the front wall 84 to a rear wall 88. The rear wall 88 of the pump tube mount extends downward below the base 67 of the pump tube mount. At the lower end of the rear wall 88 are a pair of tabs 90 which engage the lower edge 78 of the ledge 75 in the cartridge 20. The dividing wall 64 in the cartridge 20 is discontinuous providing openings for each of the pump tube mounts. Also illustrated in FIG. 9 is a bag spike 92, which is inserted into a bag of fluid solution hanging from a pole to connect the pump with the fluid solution.
FIG. 10 shows how a pump tube mount of the present invention is inserted into a cartridge of the present invention. The rigid base 67 beneath the pump tube 22 does not extend all the way to the front wall or the rear wall. At the front wall, this provides a space into which the retaining stump 82 can be extended. Thus, the first step, is to position the front wall 84 up against the stump 82. The rear wall 88 is then lowered over the ledge 75 in the cartridge 20. As the rear wall 88 is lowered, the front wall 84 pivots into place within the opening 80. The rear wall 88 is lowered until the tabs 90 snap into the openings beneath the lower edge 78. The rear wall 88 is located so as to fit snugly against the ledge 75. Thus, when the tabs 90 have not yet been lowered into the openings beneath the edge 78, the tabs 90 are forcing the rear wall 88 away from its normal resting position. Once the tabs get beneath the lower edge 78, the rear wall 88 is free to resume its resting position and therefore springs back against the ledge to make a snapping noise. The snap can be heard and felt so as to reassure the user that the pump tube mount is correctly positioned. The engagement of the tabs and the lower edge 78 keeps the pump tube mount in its correct position When in place, the rear wall 88 against the ledge 75 prevents the pump tube mount from moving forward. Thus, in combination with the retaining stump 80 and the opening 88, the pump tube mount is securely held in a known position in three dimensions.
FIG. 11 illustrates a disposable pump tube mount of the present invention The pump tube mount shown is attached to a flexible fluid source pouch 44. The fluid source pouch 44 may be adhesively bound to an inlet 94 extending from the rear wall 88 of the pump tube mount. A luer cap 96 may be screwed on to the luer connector 26 when the tube mount is not hooked up to an output line.
In FIG. 12, the pump tube mount is shown without a tube 22. Extending inwards from the front wall and the rear wall 88 is a fitting 98. The fitting 98 has a cylindrical exterior portion which makes surface contact with the inner circumference of the tube 22. The surface contact provides a frictional force between the fitting 98 and the inner circumference of the tube 22. In certain applications, this frictional force may be sufficient to hold the tube on the fittings. Since it is desirable in an infusion pump application to use a compressible material for the tube 22 which does not adhere to the fluids being delivered, it is often also true that such materials do not adhere to adhesives. Therefore, adhesive bonding is not a suitable means for attaching the tube to the fitting.
The presently preferred material for the tube 22 is Dow Corning medical-grade silicone.
In accordance with the present invention, an indentation such as an annular groove 100 is made in the cylindrical fitting 98. If the tube 22 fits tightly enough over the fitting 98, the silicone will slightly extend into the groove 100. This will provide an edge against the fitting which will hold the tube in place. To ensure that the silicone is depressed into the groove 100, a collar 102 may be placed over the tube concentrically aligned with the groove 100. The engagement of the tube with the groove provides adequate resistance against the shear forces created by the pumping action. The collar 102 is preferably a rigid material which is sized to compress the silicone into the groove 100. The collar 102 may be made from a material such as PVC.
Referring now to FIG. 13, the rigid base 67 is shown. The base 67 is supported by the sidewalls 86 of the pump tube mount. As can be seen in FIG. 13, there is a space between the rigid base 67 and the front wall 84 into which the stump 82 can extend.
The pump tube mount advantageously provides a means for securing a silicone tube to a fitting without adhesive or outwardly projecting ridges which may subject the silicone to tearing. The mount is accurately positioned within the cartridge in three dimensions. Moreover, the fulcrum of the cartridge ensures accurate spacing between the pump and the pump interface portion of the cartridge to permit accuracy in infusion pump rates.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. For example, any number of different front wall shapes and corresponding openings may be used in the front end wall of the cartridge to achieve the two dimensional accuracy of the present invention. Also, the cartridge of the present invention need not be restricted to use with four pump tube mounts, any number may be provided including a single fluid cartridge and pump. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles M. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles M. | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Kienholz Charles M.,San Dimas,CA,US | | Inventor Count: 2 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Smith, Leonard E. / Szczecina, Jr., Eugene L. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1991-04-30 | | Publication Month: 04 | | Publication Year: 1991 | | Application Number: US1989301628A | | Application Country: US | | Application Date: 1989-01-24 | | Application Month: 01 | | Application Year: 1989 | | Application with US Provisional: US1989301628A | 1989-01-24 | | Priority Number: US1988216512A | | Priority Country: US | | Priority Date: 1988-07-08 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US1988216512A
| 1988-07-08
| US4950245A
| 1990-08-21
| Continuation-in-part
| Granted
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
| A61M 5/142
| A61M 5/16827
| 20130101
| EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 417360, 417474, 417475 | | US Class (divided): 417/360, 417/474, 417/475 | | US Class - Main: 417360 | | US Class - Original: 417360 | 417474 | 417475 | | ECLA: A61M0005142, K61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
WO1989011302A1
| 1989-11-30
| DAVIS David Lyle
| DAVIS DAVID LYLE
| -
| 0 (Examiner)
|
| Title: INFUSION DEVICE WITH DISPOSABLE ELEMENTS |
| |
US4741736A
| 1988-05-03
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Programmable infusion pump |
| |
US4650469A
| 1987-03-17
| Berg Harvey F.
| DELTEC SYSTEMS INC
| -
| 0 (Examiner)
|
| Title: Drug delivery system |
| |
US4493704A
| 1985-01-15
| Beard Robert W.
| OXIMETRIX
| -
| 0 (Examiner)
|
| Title: Portable fluid infusion apparatus |
| |
US4479797A
| 1984-10-30
| Kobayashi Susumu
| TERUMO CORP
| -
| 0 (Examiner)
|
| Title: Medication infusion device |
| |
US4340153A
| 1982-07-20
| Spivey David L.
| SPIVEY DAVID L
| -
| 0 (Examiner)
|
| Title: Method and apparatus for medication dispensing |
| |
US4890984A
| 1990-01-02
| Alderson Richard K.
| ALDERSON RICHARD K
| -
| 0 (Examiner)
|
| Title: Infusion pump system and conduit therefor |
| |
WO1981001728A1
| 1981-06-25
| OLSON R
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: MINIATURE INFUSION PUMP |
| |
US4756706A
| 1988-07-12
| Kerns Ralph M.
| AMERICAN HOSPITAL SUPPLY CORP
| -
| 0 (Examiner)
|
| Title: Centrally managed modular infusion pump system |
| |
US4696671A
| 1987-09-29
| Epstein Paul
| OMNI FLOW INC
| -
| 0 (Examiner)
|
| Title: Infusion system having plural fluid input ports and at least one patient output port |
| |
US4142524A
| 1979-03-06
| Jassawalla Jal S.
| ANDROS INC
| -
| 0 (Examiner)
|
| Title: Cassette for intravenous delivery system |
| |
US3778195A
| 1973-12-11
| Bamberg George
| BAMBERG G
| -
| 0 (Examiner)
|
| Title: PUMP FOR PARENTERAL INJECTIONS AND THE LIKE |
| |
US2412397A
| 1946-12-10
| HARPER LYNDUS E
| HARPER LYNDUS E
| -
| 0 (Examiner)
|
| Title: Flexible tube pump |
| |
US4479761A
| 1984-10-30
| Bilstad Arnold C.
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to externally applied pressures |
| |
US4391600A
| 1983-07-05
| Archibald G. Kent
| AVI INC
| -
| 0 (Examiner)
|
| Title: Nonpulsating IV pump and disposable pump chamber |
| |
US4397639A
| 1983-08-09
| Eschweiler Wilhelm
| FERRING ARZNEIMITTEL GMBH
| -
| 0 (Examiner)
|
| Title: Device for the intermittent pulsatory application of fluid medicaments |
| |
| | Count of Cited Refs - Patent: 16 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
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| 1992-12-08
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| 1993-08-17
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| 1993-11-02
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| 1993-11-30
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| 1994-06-07
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| 1995-09-05
| VALLEYLAB INC
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| 1995-10-17
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| 1996-10-15
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| 1996-10-22
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|
| | Count of Citing Patents: 25 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
2003-04-25
| SULP
| +
|
| Description: SURCHARGE FOR LATE PAYMENT |
| |
2003-04-25
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1999-04-30
| SULP
| +
|
| Description: SURCHARGE FOR LATE PAYMENT |
| |
1999-04-30
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1998-11-24
| REMI
| -
|
| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1994-10-31
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1989-01-24
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP. OF CA, CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNORS:BROWN, ERIC W.; KIENHOLZ, CHARLES M.; REEL/FRAME:005034/0254 1989-01-05 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION A CORP. OF CA,IRVINE,CA,US
| BROWN, ERIC W.
| 1989-01-05
| 005034/0254
| 1989-01-24
|
KIENHOLZ, CHARLES M.
| 1989-01-05
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER STREET BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
EP354324A2
| 19900214
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
|
| Title: INJECTION PUMP DEVICE |
| |
US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple fluid cartridge and pump |
| |
US5131816A
| 19920721
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5011378A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US5011378A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 19/43 | | US4950245A | Multiple fluid cartridge and pump | | Publication Number: US4950245A | | Title: Multiple fluid cartridge and pump | | Title (Original): Multiple fluid cartridge and pump | | Title (English): Multiple fluid cartridge and pump | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Infusion pump system with multi:fluid cartridge has programmable controller for linear peristaltic pumps outputting to manifold | Abstract:
A pump housing which contains a plurality of linear peristaltic pumps and receives a fluid source cartridge. The cartridge is provided with retaining knobs for engaging retaining holes in the front end of the pump housing. A cartridge further contains a tab at its rear end for engaging a locking mechanism in the pump housing. The cartridge contains linear fluid conduits which align with the linear peristaltic pumps for pumping fluid from the fluid source pouches within the cartridge. Each pump is individually controlled by a programmable controller within the pump. | Abstract (English):
A pump housing which contains a plurality of linear peristaltic pumps and receives a fluid source cartridge. The cartridge is provided with retaining knobs for engaging retaining holes in the front end of the pump housing. A cartridge further contains a tab at its rear end for engaging a locking mechanism in the pump housing. The cartridge contains linear fluid conduits which align with the linear peristaltic pumps for pumping fluid from the fluid source pouches within the cartridge. Each pump is individually controlled by a programmable controller within the pump. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A pump housing which contains a plurality of linear peristaltic pumps and receives a fluid source cartridge. The cartridge is provided with retaining knobs for engaging retaining holes in the front end of the pump housing. A cartridge further contains a tab at its rear end for engaging a locking mechanism in the pump housing. The cartridge contains linear fluid conduits which align with the linear peristaltic pumps for pumping fluid from the fluid source pouches within the cartridge. Each pump is individually controlled by a programmable controller within the pump. | | Abstract (Spanish): | Claims:
I claim:
1. A multiple fluid source cartridge comprising;
*
a rigid housing;
*
a plurality of fluid containing compartments located within said housing;
*
a linear conduit connected to each one of said fluid containing compartments;
*
a plurality of plunger members superposed on each of said linear conduits; and
*
an output port accessible from outside said housing for each of said linear fluid conduits.
2. The cartride of claim 1 further comprising a detachable module for housing each plurality of plunger members.
3. The cartridge of claim 1 wherein said output port for each of said linear fluid conduits connects to a multilumen catheter.
4. The cartridge of claim 1 wherein said fluid containing compartments comprise flexible pouches. | | Claims Count: 4 | Claims (English):
I claim:
1. A multiple fluid source cartridge comprising;
*
a rigid housing;
*
a plurality of fluid containing compartments located within said housing;
*
a linear conduit connected to each one of said fluid containing compartments;
*
a plurality of plunger members superposed on each of said linear conduits; and
*
an output port accessible from outside said housing for each of said linear fluid conduits.
2. The cartride of claim 1 further comprising a detachable module for housing each plurality of plunger members.
3. The cartridge of claim 1 wherein said output port for each of said linear fluid conduits connects to a multilumen catheter.
4. The cartridge of claim 1 wherein said fluid containing compartments comprise flexible pouches. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multiple fluid source cartridge comprising;
*
a rigid housing;
*
a plurality of fluid containing compartments located within said housing;
*
a linear conduit connected to each one of said fluid containing compartments;
*
a plurality of plunger members superposed on each of said linear conduits; and
*
an output port accessible from outside said housing for each of said linear fluid conduits. | Independent Claims:
1. A multiple fluid source cartridge comprising;
*
a rigid housing;
*
a plurality of fluid containing compartments located within said housing;
*
a linear conduit connected to each one of said fluid containing compartments;
*
a plurality of plunger members superposed on each of said linear conduits; and
*
an output port accessible from outside said housing for each of said linear fluid conduits. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a multiple fluid cartridge which is insertable into a programmable infusion pump.
It is an object of this invention to provide a compact, lightweight infusion pump which may be used for ambulatory patients. It is a further object of this invention to provide a pump which can be conveniently used with fluid source cartridges.
There has been a demonstrated need for pumps which can intravenously administer a plurality of drug solutions. For example, multiple drug chemotherapy treatments have been used to treat diseases such as cancer. Many of the drugs used in chemotherapy and other therapies cannot be mixed together prior to an infusion. Some of these drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube, or possibly cause an embolism in the patient.
Pumps have been developed which can concurrently pump a plurality of fluids through a multilumen catheter into a patient. The multilumen catheter keeps the drugs separate until they reach the bloodstream. For example, in U.S. Pat. No. 4,741,736 (Brown), a pump is disclosed which uses a roller to push fluid out of a plurality of compartments in an infusion pump. The different fluids in each of the compartment is pumped out at the same time by the action of the single roller
In infusion pump patent, U.S. Pat. No. 4,666,430 (Brown and Tai) , a multiple syringe pump is disclosed in which a canister of compressed gas serves as the power source for pumping fluid out of a syringe. All of the syringes are controlled by the same canister of gas, and variation in the pumping rate of a syringe is controlled by valves on the outlets of the syringes.
An object of the present invention is to provide in a single ambulatory housing, separately controlled pumping mechanisms for each of a plurality of fluid sources. It is a still further object of the present invention to provide multiple fluid source cartridges which are attachable to a pump of the present invention.
SUMMARY OF THE INVENTION
The present invention is directed to an infusion pump system including a fluid source cartridge which is attachable to a pump housing. The pump housing has a plurality of linear peristaltic pumps. Each fluid source in the cartridge has a linear fluid conduit which aligns with a peristaltic pump when the cartridge is inserted into the housing. The pumping of fluid from any of the fluid sources in the cartridge is controlled by the source's respective peristaltic pump.
The infusion pump housing may be advantageously provided with a programmable controller to permit individual control over each of the peristaltic pumps. This permits operating the pumps sequentially or concurrently and at any selected pumping rate.
The multiple fluid source cartridge may be further provided with a module containing a plurality of plunger members. Each module overlies a linear conduit and the plunger members are alternately moved by the fingers of the peristaltic pump in the pump housing to cause fluid to be pumped from its respective fluid source. The same cartridge may be used for any number from one to four fluid sources, it being only necessary to provide the appropriate number of plunger modules in the cartridge.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the pump and cartridge of the present invention.
FIG. 2 is a side view illustrating how a cartridge attaches to a pump according to the present invention.
FIG. 3 is a plan view of a cartridge of the present invention with the top wall of the cartridge housing removed.
FIG. 4 is a bottom plan view of the pump of the present invention without a cartridge in place.
FIG. 5 is an end view of the pump of FIG. 4.
FIG. 6 is a side cross-sectional view of the pump and cartridge of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, a pump housing 10 is provided for pumping fluid from a multiple fluid cartridge 20. The pump housing 10 is provided with a liquid crystal display 12, a keyboard 14 and as shown in FIG. 5, programming jacks 16. The underside of the pump housing 10 forms a cavity for receiving the cartridge 20. The cavity extends through one end of the pump housing 10. Just inside the open end of the housing, there are two cartridge retaining holes 18 for engaging retaining knobs 34 on the cartridge.
The cartridge 20 houses one or more fluid sources 44. The cartridge 20 further has space for four plunger modules 24. Each plunger module 24 has three plunger members which are used for pumping fluid through a linear fluid conduit positioned directly beneath the module 24. The inside end of the fluid conduit connects to one of the fluid sources in the body of the cartridge 20. At the outer end of the linear fluid conduit a connector 26 serves as the output port for delivering fluid into an output lumen.
In FIG. 1, all four lumens are being used by the cartridge 20. The lumens are fused together to form a multi-lumen tube for outputting the fluid to a connector for making connection with an implanted catheter, for example. The multi-lumen output tube may be connected to any of a variety of a multi-lumen connectors. Three possibilities are shown in FIG. 1. A needle connector 28 may be used in which each lumen is connected to a hollow injection needle. The needle connector may be inserted through a silicone block to make connection with a connector for a multi-lumen catheter. Another option is a multi-lumen connector such as that described in co-pending U.S. patent application Ser. No. 178,673 filed on Apr. 7, 1988, owned by the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein. A third possibility for the output tube is to connect each lumen separately to a luer connector 32 so that individual connections can be made to four separate catheter lines.
The cartridge 20 is provided with a retaining knob 34 on two opposite sides near its front end. The retaining knob 34 is preferably a linear flange cocked at an angle with respect to the bottom of the cartridge. Preferably, the knob 34 is cocked at approximately a 45 degree angle with respect to the bottom of the cartridge, one end of the knob pointing towards the top of the cartridge and the other end of the knob pointing towards the front end of the cartridge. This permits the end of the knob 34 which points towards the top of the cartridge to be inserted into the retaining hole 18 in the pump housing 10 while the rear of the cartridge 20 hangs below the pump as shown in FIG. 2. The retaining hole 18 has an entrance opening 19 at the front of the housing. Once the entire knob 34 has been inserted through the opening 19 into the retaining hole 18, the cartridge 20 can be swung upwards to fully engage the pump housing 10.
At the rear of the pump housing 10, a lock 36 is provided for engaging a tab 22 on the rear end of the cartridge. The lock 36 according to the presently preferred embodiment is provided with a beveled edge 38 and a retaining edge 39. A spring 40 urges the lock 36 to hold the cartridge in place. As the cartridge 20 is pushed up into the housing, the cartridge tab 22 slides along the beveled edge 38 and pushes the lock back against the action of the spring 40. Once the tab 22 gets above the retaining edge 39, the spring forces the lock back beneath the cartridge tab 22 so that the tab 22 is held up on top of the retaining edge 39. Thus, the lock 36 prevents the cartridge 20 from falling out of the pump housing. At the front of the cartridge, the retaining knob 34 which entered the retaining holes 18 in a horizontal position are at an angle when the cartridge is fully inserted. Thus, the retaining knobs 34 cannot slide out of the retaining holes 18.
The cartridge lock 36 of the pump housing is further shown in FIG. 4, where it can be seen that the lock 36 swivels about an axis 41. The spring 40 urges the engaging end of the lock 36 against the cartridge 20. A cartridge can be released from the pump housing 10 by pushing against the other end of the lock 36 which forms a button 42 through an opening in the pump housing. When button 42 is pressed, the lock 36 swings away from the cartridge 20, permitting the tab 22 to disengage from the retaining edge 39 of the lock. Thus, the back end of the cartridge can fall out of the pump housing and when the retaining knobs 34 are in horizontal position with respect to the pump housing, they may be slid out through the openings 19.
FIG. 3 reveals the fluid sources stored within the cartridge 20. Each fluid source 44 is provided with a linear fluid conduit 45 beneath a plunger module 24. The fluid sources 44 are flexible pouches. The presently suggested procedure for using the cartridges 20 is to provide them with empty pouches. The desired fluid is injected into the connector port 26, using a syringe or other conventional means. After filling the pouch 44 with the desired amount of fluid, the connector port 26 is attached to the output tube. When all of the pouches are filled with their fluid, the cartridge may be inserted into the pump housing 10 and a purge cycle may be run on each of the fluid sources to pump out all of the air which may have gotten into the pouch or conduit line. After purging the air, the cartridge 20 is ready for use in an infusion.
Referring now to FIGS. 4 and 6, the pump of the present invention is provided with a plurality, four in this case, of linear peristaltic pumps. Linear peristaltic pumps are well known and any conventional design may be used to accomplish the objectives of the present invention. The pump of the preferred embodiment is a three finger pump, called such because of the three cams which are repeatedly lowered and raised to provide the desired pumping action. Each pump thus activates three cam followers, including an output cam follower 46 and a pump cam follower 48 and an input cam follower 50. Power for the pumps is provided by a battery which may be loaded into a cavity behind a battery cover 52 alongside the peristaltic pumps within the housing 10. Each pump is provided with its own motor 54 which turns a cam shaft 56. The cam shaft 56 is provided with a timing disk 58. The timing disk is read by a timing circuit on a printed circuit board 60. Signal feedback from the timing circuit on the printed circuit board 60 can be provided to control the speed of the motor 54 and thus control the rate of fluid infusion from any of the fluid sources. A spring 62 is located about each of the cam followers to urge the cam follower into a retracted position.
The cam followers interact with the plungers of the plunger module 24. Each plunger module 24 includes an output valve 63, a pump 64 and an input valve 66. The linear fluid conduit 45 beneath each plunger assembly 24 is provided through a silicone block 68. A silicone block 68 is provided in each of the plunger modules. A connector 70 at the end of the fluid conduit within the cartridge 20 is used for attaching the conduit to its respective fluid source 44. Each linear conduit 45 has an enlarged portion beneath the pump plunger 64. This enlarged portion of the conduit is called a pump tube 74.
Pumping is performed as follows. With the pump plunger 64 and the input valve 66 retracted, the output cam follower 46 is lowered against the output valve 63 to close off the fluid conduits. This permits the pump tube 74 to fill with fluid. Next, the input valve 66 is lowered by the input cam follower 50 to close off the pump tube 74 and prevent fluid from flowing back into the fluid source 44. The output cam follower 46 is then retracted permitting the output valve 63 to open. The pump plunger 64 is activated by the pump cam follower 48 to push fluid out through the conduit and into the output tube. Then the output valve 63 is again closed by the output cam follower 46. The pump cam follower 48 and the input cam follower 50 are retracted to permit the pump plunger 64 and the input valve 66 to open, thereby permitting the pump tube to refill with fluid. Thus, fluid is pumped out of the fluid source pouch 44. The rate of pumping is controlled by the speed of the motor 54 which is monitored by the timing printed circuit board 60.
A programmable microprocessor is provided on a control circuit board 76. Each of the four pump motors is controlled by the controller board 76. Since each fluid source has its own pump and pump motor, the rate and sequence of fluid infusion is entirely flexible. Infusions may take place concurrently or sequentially and at any rate. The desired sequence and rates of infusion are programmed into the controller board 76 through the programming jacks 16. Thus, in accordance with the present invention, multiple fluid infusion treatments may be delivered to a patient in any number of sequences and rates with an ambulatory pump. Thus, the pump of the present invention provides physicians with the great latitude for selecting multiple-fluid drug regimens for treating patient illnesses.
It is further noted that by swinging the cartridges into the cartridge receiving space of the pump housing, rather than sliding the cartridge into that space, the present invention allows for a cam follower to be in the lowered position. In such a position, the cam follower would block a cartridge from being slid into its space. However, when the cartridge is swung into position, the extended cam follower merely pushes up against its corresponding plunger member.
Of course, it should be understood that various changes and modifications to the prefered embodiment described above will be apparent to those skilled in the art. For example, any number of fluid sources may be provided in a cartridge. Also, if a pump ensured that all the cam followers were retracted, the cartridge could be inserted by sliding it into place. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Irvine,CA,US | | Assignee/Applicant First: I Flow Corporation,Irvine,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles | Busak, Steve | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles | Busak, Steve | | Inventor - w/address: Brown Eric W.,Newport Beach,CA,US | Kienholz Charles,San Dimas,CA,US | Busak Steve,Laguna Niguel,CA,US | | Inventor Count: 3 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Yasko, John D. / Cermak, Adam J. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1990-08-21 | | Publication Month: 08 | | Publication Year: 1990 | | Application Number: US1988216512A | | Application Country: US | | Application Date: 1988-07-08 | | Application Month: 07 | | Application Year: 1988 | | Application with US Provisional: US1988216512A | 1988-07-08 | | Priority Number: US1988216512A | | Priority Country: US | | Priority Date: 1988-07-08 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 5/14228
| A61M 5/14244
A61M 5/16827
A61M 2205/12
Y10S 128/12
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604153, 128DIG12, 604067, 604246, D24111 | | US Class (divided): 604/153, 128/DIG12, 604/067, 604/246, D24/111 | | US Class - Main: 604153 | | US Class - Original: 604153 | 604067 | 604246 | 128DIG12 | | ECLA: A61M0005142G6, K61M0005168A11, K61M0005142P, K61M020512 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4397639A
| 1983-08-09
| Eschweiler Wilhelm
| FERRING ARZNEIMITTEL GMBH
| -
| 0 (Examiner)
|
| Title: Device for the intermittent pulsatory application of fluid medicaments |
| |
US4498843A
| 1985-02-12
| Schneider Philip H.
| SCHNEIDER PHILIP H
| -
| 0 (Examiner)
|
| Title: Insulin infusion pump |
| |
US4479797A
| 1984-10-30
| Kobayashi Susumu
| TERUMO CORP
| -
| 0 (Examiner)
|
| Title: Medication infusion device |
| |
US4199307A
| 1980-04-22
| Jassawalla Jal S.
| ANDROS INC
| -
| 0 (Examiner)
|
| Title: Medical infusion system |
| |
US2351828A
| 1944-06-20
| MARSH JACK C
| G L MEYERS
| -
| 0 (Examiner)
|
| Title: Surgical pump |
| |
US4741736A
| 1988-05-03
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Programmable infusion pump |
| |
US4725205A
| 1988-02-16
| Cannon Raymond E.
| FISHER SCIENT GROUP INC
| -
| 0 (Examiner)
|
| Title: Peristaltic pump with cam action compensator |
| |
US4673390A
| 1987-06-16
| Archibald G. Kent
| MINNESOTA MINING & MFG
| -
| 0 (Examiner)
|
| Title: Multiple solution IV system |
| |
US4340153A
| 1982-07-20
| Spivey David L.
| SPIVEY DAVID L
| -
| 0 (Examiner)
|
| Title: Method and apparatus for medication dispensing |
| |
US4756706A
| 1988-07-12
| Kerns Ralph M.
| AMERICAN HOSPITAL SUPPLY CORP
| -
| 0 (Examiner)
|
| Title: Centrally managed modular infusion pump system |
| |
US4734092A
| 1988-03-29
| Millerd Donald L.
| IVAC CORP
| -
| 0 (Examiner)
|
| Title: Ambulatory drug delivery device |
| |
US4728265A
| 1988-03-01
| Cannon Raymond
| FISHER SCIENT GROUP INC
| -
| 0 (Examiner)
|
| Title: Peristaltic pump with cam action compensator |
| |
US4705506A
| 1987-11-10
| Archibald G. Kent
| MINNESOTA MINING & MFG
| -
| 0 (Examiner)
|
| Title: Multiple solution IV system with setup error protection |
| |
US4650469A
| 1987-03-17
| Berg Harvey F.
| DELTEC SYSTEMS INC
| -
| 0 (Examiner)
|
| Title: Drug delivery system |
| |
US4142524A
| 1979-03-06
| Jassawalla Jal S.
| ANDROS INC
| -
| 0 (Examiner)
|
| Title: Cassette for intravenous delivery system |
| |
US4865584A
| 1989-09-12
| Epstein Paul
| OMNI FLOW INC
| -
| 0 (Examiner)
|
| Title: Cassette for programable multiple input infusion system |
| |
US4718467A
| 1988-01-12
| Di Gianfilippo Aleandro
| BAXTER TRAVENOL LAB
| -
| 0 (Examiner)
|
| Title: Pumping module arrangement and manifold |
| |
US4273121A
| 1981-06-16
| Jassawalla Jal S.
| ANDROS INC
| -
| 0 (Examiner)
|
| Title: Medical infusion system |
| |
US4657490A
| 1987-04-14
| Abbott Martyn S.
| QUEST MEDICAL INC
| -
| 0 (Examiner)
|
| Title: Infusion pump with disposable cassette |
| |
US4850972A
| 1989-07-25
| Schulman Joseph H.
| PACESETTER INFUSION LTD
| -
| 0 (Examiner)
|
| Title: Progammable multiple pump medication infusion system with printer |
| |
US4696671A
| 1987-09-29
| Epstein Paul
| OMNI FLOW INC
| -
| 0 (Examiner)
|
| Title: Infusion system having plural fluid input ports and at least one patient output port |
| |
US4497370A
| 1985-02-05
| Breslin Michael K.
| BRESLIN MICHAEL K
| -
| 0 (Examiner)
|
| Title: Apparatus and method for recovery of liquid hydrocarbons from ground water |
| |
US4094318A
| 1978-06-13
| Burke George K.
| BURRON MEDICAL PROD INC
| -
| 0 (Examiner)
|
| Title: Electronic control means for a plurality of intravenous infusion sets |
| |
DE3500467A1
| 1986-07-10
| Kaemmerer Erich Dr.med.
| BERNARD GEB KAEMMERER INGRID
| -
| 0 (Examiner)
|
| Title: Variable infusion device for medical purposes |
| |
US4601700A
| 1986-07-22
| Thompson Thomas C.
| QUEST MEDICAL INC
| -
| 0 (Examiner)
|
| Title: METHOD FOR FLOW CONTROL MONITORING |
| |
US4731057A
| 1988-03-15
| Tanaka Shigeru
| NIKKISO CO LTD
| -
| 0 (Examiner)
|
| Title: Transfusion apparatus |
| |
US4666430A
| 1987-05-19
| Brown Eric W.
| I FLOW CORP
| -
| 0 (Examiner)
|
| Title: Infusion pump |
| |
US4653987A
| 1987-03-31
| Tsuji Tsuyoshi
| TSUJI TSUYOSHI
| -
| 0 (Examiner)
|
| Title: Finger peristaltic infusion pump |
| |
US4563175A
| 1986-01-07
| LaFond Margaret
| LAFOND MARGARET
| -
| 0 (Examiner)
|
| Title: Multiplesyringe pump |
| |
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| HETTICH ANDREAS GMBH & CO KG
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US20080275422A1
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| CARDINAL HEALTH 303 INC
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US20110021905A1
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| CARTICEPT MEDICAL INC
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US5057081A
| 1991-10-15
| SHERWOOD MEDICAL CO
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US5131816A
| 1992-07-21
| I FLOW CORP
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US5171301A
| 1992-12-15
| IMED CORP
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US5207645A
| 1993-05-04
| MEDICATION DELIVERY DEVICES
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US5256157A
| 1993-10-26
| BAXTER INT
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US5277175A
| 1994-01-11
| RIGGS JOHN H
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US5355872A
| 1994-10-18
| RIGGS JOHN H
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US5433704A
| 1995-07-18
| MEDICATION DELIVERY DEVICES
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US5454792A
| 1995-10-03
| HYPROTECK INC
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US5564915A
| 1996-10-15
| SIMS DELTEC INC
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US5567136A
| 1996-10-22
| SIMS DELTEC INC
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US5569181A
| 1996-10-29
| MEDRAD INC
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US5584811A
| 1996-12-17
| MEDICATION DELIVERY DEVICES IN
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US5588816A
| 1996-12-31
| QUEST MEDICAL INC
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US5634896A
| 1997-06-03
| DEKA PRODUCTS LP
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US5739508A
| 1998-04-14
| MEDRAD INC
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US5743878A
| 1998-04-28
| MEDICATION DELIVERY DEVICES IN
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US5806519A
| 1998-09-15
| MEDRAD INC
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US5840026A
| 1998-11-24
| MEDRAD INC
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US5843037A
| 1998-12-01
| MEDRAD INC
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US5879143A
| 1999-03-09
| SIMS DELTEC INC
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US5911716A
| 1999-06-15
| I FLOW CORP
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| 1999-07-06
| MEDRAD INC
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US5941696A
| 1999-08-24
| EMBREX INC
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US6063052A
| 2000-05-16
| MEDRAD INC
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US6149627A
| 2000-11-21
| MEDRAD INC
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US6251098B1
| 2001-06-26
| I FLOW CORP
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US6306117B1
| 2001-10-23
| MEDRAD INC
|
US6345962B1
| 2002-02-12
| SUTTER DOUGLAS E
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US6358239B1
| 2002-03-19
| I FLOW CORP
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US6385483B1
| 2002-05-07
| MEDRAD INC
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| 2002-08-27
| MEDRAD INC
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US6482171B1
| 2002-11-19
| HEARTPORT INC
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| 2003-12-30
| EMBREX INC
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US6699230B2
| 2004-03-02
| MINNESOTA MEDICAL PHYSICS LLC
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US6731971B2
| 2004-05-04
| MEDRAD INC
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US6783514B2
| 2004-08-31
| UNITED STATES SURGICAL CORP
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US6871759B2
| 2005-03-29
| I FLOW CORP
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US6889074B2
| 2005-05-03
| MEDRAD INC
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US6901283B2
| 2005-05-31
| MEDRAD INC
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US6942473B2
| 2005-09-13
| HOSPIRA INC
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US7083068B2
| 2006-08-01
| I FLOW CORP
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| 2007-05-29
| GAMBRO LUNDIA AB
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US7223338B2
| 2007-05-29
| GAMBRO LUNDIA AB
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| 2007-06-19
| GAMBRO LUNDIA AB
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US7247146B2
| 2007-07-24
| GAMBRO LUNDIA AB
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US7313431B2
| 2007-12-25
| MEDRAD INC
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US7314554B2
| 2008-01-01
| GAMBRO LUNDIA AB
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US7337922B2
| 2008-03-04
| I FLOW CORP
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| 2008-09-23
| MEDRAD INC
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| 2009-04-14
| GAMBRO LUNDIA AB
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| 2010-01-05
| GAMBRO LUNDIA AB
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| 2010-06-01
| GAMBRO LUNDIA AB
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| 2010-06-01
| GAMBRO LUNDIA AB
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US7867393B2
| 2011-01-11
| GAMBRO LUNDIA AB
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US7925330B2
| 2011-04-12
| MEDRAD INC
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US7934912B2
| 2011-05-03
| CURLIN MEDICAL INC
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US7993516B2
| 2011-08-09
| GAMBRO LUNDIA AB
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| 2011-08-23
| CARTICEPT MEDICAL INC
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| 2011-08-30
| CARTICEPT MEDICAL INC
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| VOLTENBURG JR ROBERT R
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| 2011-12-20
| PATRICK TIMOTHY
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| VOLTENBURG JR ROBERT R
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| 2015-04-14
| Bayer Medical Care Inc.
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USD317164S1
| 1991-05-28
| I Flow Corporation
|
USD357312S1
| 1995-04-11
| Hospal Industrie
|
USD367928S1
| 1996-03-12
| Carter Holt Harvey Plastic Products Group Limited
|
USD418219S1
| 1999-12-28
| Zambon Group SA.
|
USD455489S1
| 2002-04-09
| ZEVEX INC
|
USD475134S1
| 2003-05-27
| KCI LICENSING INC
|
USD501924S1
| 2005-02-15
| ZEVEX INC
|
USD503799S1
| 2005-04-05
| ZEVEX INC
|
USD503978S1
| 2005-04-12
| ZEVEX INC
|
USD504506S1
| 2005-04-26
| ZEVEX INC
|
USD505199S1
| 2005-05-17
| ZEVEX INC
|
USD523553S1
| 2006-06-20
| ZEVEX INC
|
USD536783S1
| 2007-02-13
| ZEVEX INC
|
USD634005S1
| 2011-03-08
| ZEVEX INC
|
USD635664S1
| 2011-04-05
| ZEVEX INC
|
USRE35501E1
| 1997-05-06
| MEDICATION DELIVERY DEVICES
|
WO2009086182A1
| 2009-07-09
| CARTICEPT MEDICAL INC
|
| | Count of Citing Patents: 92 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2009-12-11
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
| |
2009-11-30
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
| |
2002-02-21
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1997-09-29
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1996-10-08
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
| -
|
| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1994-02-07
| FPAY
| +
|
| Description: FEE PAYMENT |
| |
1988-07-08
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION,CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNORS:BROWN, ERIC W.; KIENHOLZ, CHARLES; BUSAK, STEVE; REEL/FRAME:004910/0012 1988-07-07 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
| |
SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
I-FLOW CORPORATION,CA,US
| BROWN, ERIC W.
| 1988-07-07
| 004910/0012
| 1988-07-08
|
KIENHOLZ, CHARLES
| 1988-07-07
|
BUSAK, STEVE
| 1988-07-07
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND, 130 WATER ST. BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple fluid cartridge and pump |
| |
EP354324A2
| 19900214
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
|
| Title: INJECTION PUMP DEVICE |
| |
US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
US5131816A
| 19920721
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4950245A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4950245A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 20/43 | | EP354324A3 | CARTRIDGE-TYPE PROGRAMMABLE AMBULATORY INFUSION PUMP | Pompe à perfusion programmable et portable fonctionnant avec des cartouches | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | | Publication Number: EP354324A3 | | Title: CARTRIDGE-TYPE PROGRAMMABLE AMBULATORY INFUSION PUMP | Pompe à perfusion programmable et portable fonctionnant avec des cartouches | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | | Title (Original): Cartridge-type programmable ambulatory infusion pump | Pompe à perfusion programmable et portable fonctionnant avec des cartouches | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | | Title (English): Cartridge-type programmable ambulatory infusion pump | | Title (French): Pompe à perfusion programmable et portable fonctionnant avec des cartouches | | Title (German): Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | | Title (Spanish): | | Title - DWPI: | Abstract:
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | Abstract (English):
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee/Applicant First: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee - Standardized: I-FLOW CORPORATION | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Busak, Steven | Kienholz, Charles M. | Hayob, Wayne | Papic, Ferrell D. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Busak, Steven | Kienholz, Charles M. | Hayob, Wayne | Papic, Ferrell D. | | Inventor - w/address: Brown Eric W.,Newport Beach California 92660,US | Busak Steven,Laguna Niguel California 92677,US | Kienholz Charles M.,San Dimas California 91773,US | Hayob Wayne,Mission Viejo California 92691,US | Papic Ferrell D.,Orange California 92665,US | | Inventor Count: 5 | | Attorney/Agent: von Bezold, Dieter, Dr. | | Attorney/Agent - w/Address: von Bezold Dieter Dr.|Dr. Dieter von Bezold Dipl. Ing. Peter Schütz Dipl. Ing. Wolfgang Heusler Brienner Strasse 52, 80333 München, DE|00012341 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A3 | | Publication Date: 1990-10-03 | | Publication Month: 10 | | Publication Year: 1990 | | Application Number: EP1989111139A | | Application Country: EP | | Application Date: 1989-06-19 | | Application Month: 06 | | Application Year: 1989 | | Application with US Provisional: EP1989111139A | 1989-06-19 | | Priority Number: US1988216512A | US1989301628A | US1989351981A | | Priority Country: US | US | US | | Priority Date: 1988-07-08 | 1989-01-24 | 1989-05-15 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | 01 | 05 | | Priority Year(s): 1988 | 1989 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 5/14228
A61M 5/142
| A61M 5/14244
A61M 5/16827
A61M 2205/12
Y10S 128/12
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142G6, A61M0005142, K61M0005168A11, K61M0005142P, K61M020512 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4781548A
| 1988-11-01
| Alderson Richard K.
| ALDERSON RICHARD K
| AP
| 0 (Examiner)
|
| Title: Infusion pump system and conduit therefor |
| |
US4741736A
| 1988-05-03
| Brown Eric W.
| I FLOW CORP
| AD
| 0 (Examiner)
|
| Title: Programmable infusion pump |
| |
US4657486A
| 1987-04-14
| Stempfle Julius E.
| STEMPFLE JULIUS E
| Y
| 0 (Examiner)
|
| Title: Portable infusion device |
| |
EP182502A2
| 1986-05-28
| Berg Harvey F.
| DELTEC SYSTEMS INC
| A
| 0 (Examiner)
|
| Title: Drug delivery system |
| |
DE3500467A1
| 1986-07-10
| Kaemmerer Erich Dr.med.
| BERNARD GEB KAEMMERER INGRID
| A
| 0 (Examiner)
|
| Title: Variable infusion device for medical purposes |
| |
EP204977A1
| 1986-12-17
| Howson David C.
| INTELLIGENT MEDICINE INC
| Y
| 0 (Examiner)
|
| Title: Syringe drive apparatus |
| |
| | Count of Cited Refs - Patent: 6 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1991-11-27
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-04-04 |
| |
1990-10-03
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0354324 A3 DE; FR; GB; IT; SE |
| |
1990-02-14
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0354324 A2 DE; FR; GB; IT; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R DE;FR;GB;IT;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: RJ-DWDRAW 1991-04-04 1991 Deemed to be withdrawn | PS-AMEND 1991-11-27 1991 Patent Amended | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
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EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
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| Title: Cartridge-type programmable ambulatory infusion pump |
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EP354324A2
| 19900214
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge-type programmable ambulatory infusion pump |
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JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
|
| Title: INJECTION PUMP DEVICE |
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US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple fluid cartridge and pump |
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US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
US5131816A
| 19920721
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
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| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP354324A3&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP354324A3&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 21/43 | | EP354324A2 | Cartridge-type programmable ambulatory infusion pump. | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe. | Pompe à perfusion programmable et portable fonctionnant avec des cartouches. | Cartridge-type programmable ambulatory infusion pump | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | Pompe a perfusion programmable et portable fonctionnant avec des cartouches | | Publication Number: EP354324A2 | | Title: Cartridge-type programmable ambulatory infusion pump. | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe. | Pompe à perfusion programmable et portable fonctionnant avec des cartouches. | Cartridge-type programmable ambulatory infusion pump | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | Pompe a perfusion programmable et portable fonctionnant avec des cartouches | | Title (Original): Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe. | Cartridge-type programmable ambulatory infusion pump | Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | Pompe a perfusion programmable et portable fonctionnant avec des cartouches | | Title (English): Cartridge-type programmable ambulatory infusion pump | | Title (French): Pompe a perfusion programmable et portable fonctionnant avec des cartouches | | Title (German): Mit Kassette verwendbare, programmierbare und tragbare Infusionspumpe | | Title (Spanish): | | Title - DWPI: Infusion pump system with multi:fluid cartridge has programmable controller for linear peristaltic pumps outputting to manifold | Abstract:
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation.
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft. The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked. A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | Abstract (English):
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A cartridge fed infusion pump (10) containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor (54). The motor has a shaft (56) which rotates to perform a pump cycle. A position encoder (58) mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
The pump is further fed with an infusion pump cartridge (20) having a fluid source (68) portion and a pump interface portion (66). A clamp is provided in the pump interface portion. The clamp includes a bar (97) extending beneath the cartridge across the pump tubes to rigidify the cartridge and hold the tubes a fixed distance from the infusion pump when the clamp is locked.
A pump tube mount is provided for insertion into the cartridge. The pump tube mount includes a uniquely shaped front wall (84) and a rear wall (88) which extends downward in order to butt up against a ledge (75). Tabs (90) extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube (22) is mounted in the tube mount by providing a cylindrical fitting (98) having an indentation (100). The tube may be held in the indentation by a collar (102) surrounding the tube in alignment with the indentation. | | Abstract (Spanish): | Claims:
1. An infusion pump system comprising: a fluid source cartridge including a pump interface portion containing at least one linear fluid conduit being connected to an output port and a fluid source portion from which fluid is provided to said at least one fluid conduit; and a pump housing having a plurality of linear peristaltic pumps and means for receiving said fluid source cartridge such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
2. The infusion pump system of claim 1 wherein said output ports communicate with a multilumen output tube which connects to a multilumen connector means.
3. The infusion pump system of claim 1 wherein said output ports communicate with a manifold which feeds all fluids into a single output lumen.
4. The infusion pump system of claim 1 further comprising a programmable controller in said pump housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
5. The infusion pump system of one of claims 1 to 4 further comprising a clamp in the pump interface portion of said cartridge for securing said cartridge to said pump housing.
6. The infusion pump system of claim 5 wherein said clamp comprises a pair of clamp posts, each clamp post having a clamp head for insertion into said pump housing and means for changing said clamp posts between an open and a closed position.
7. The infusion pump system of one of claims 1 to 4 further comprising: a plurality of clamp posts extending from the pump interface portion of said cartridge, each post carrying an expandable member for insertion into said pump housing; and means for pulling on said clamp posts to expand said expandable members and to secure said cartridge to said pump housing.
8. The infusion pump system of claim 7 further comprising a support extending beneath the pump interface portion and connected to said clamp posts such that when said clamp posts are pulled to secure said cartridge, said support helps rigidify the pump interface portion a fixed distance from said pump.
9. The infusion pump system of one of claims 1 to 8 wherein each of said linear peristaltic pumps is operated by a direct current motor which rotates a motor shaft.
10. The infusion pump system of claim 9 further comprising along with each motor shaft, a position encoder rotatable in conjunction with its respective shaft for identifying a repeatable stop position for said shaft.
11. The infusion pump system of claim 9 wherein each of said direct current motors is selectively operable in a forward or reverse direction, the reverse direction being operable to quickly stop said motor.
12. The infusion pump system of one of claims 1 to 11 further comprising within said pump housing: a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
13. The infusion pump system of one of claims 9 to 11, 13 or 14 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
13. The infusion pump system of one of claims 9 to 11, 13 or 14 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
14. The infusion pump system of claims 1 to 13 further comprising at least one pump tube located in the pump interface portion of said cartridge, said at least one pump tube being positioned to permit interaction with said linear peristaltic pumps to force fluid out from said fluid source portion and through said tube.
15. The infusion pump system of one of claims 7 or 8 further comprising a clamp head on each of said clamp posts for pressing against said elastomeric member when said clamp post is pulled to secure said cartridge.
16. The infusion pump system of claim 15 wherein said each of said expandable members comprises a elastomeric ring encircling said clamp post adjacent its respective clamp head.
17. The infusion pump system of claim 6 wherein said means for changing comprises a handle hingedly attached to said clamp posts about a hinge axis, said axis being a first distance from a first edge of said handle and a second distance, longer than said first, from a second edge of said handle perpendicular to said first edge.
18. The infusion pump system of claim 17 wherein said handle is in the open position when it is positioned relative to the hinge axis so that said first edge is between said axis and said pump interface portion and where said handle is in the closed position when it is positioned relative to the hinge axis so that said second edge is between said axis and said pump interface portion.
19. The infusion pump system of claim 14 wherein said clamp comprises a support extending beneath all of said at least one pump tubes.
20. The infusion pump system of claims 1 to 19 wherein the end wall in said pump interface portion has a uniquely shaped opening to mate securely with a similarly shaped wall on a pump tube mount.
21. The infusion pump system of claim 20 further comprising a retaining stump adjacent said opening to hold the wall of said pump tube mount in the opening.
22. The infusion pump system of claims 1 to 21 comprising a ledge located between the pump interface portion and the fluid source portion of said cartridge, said ledge having an upper edge and at least one lower edge such that when a rear wall of a pump tube mount is lowered over said edge, tabs on said rear wall snap into said at least one lower edge.
23. An infusion pump comprising: a direct current motor operable to rotate a motor shaft; means for driving said motor; a pump mechanism actuated by said motor shaft; a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line.
24. The infusion pump of claim 23 further comprising optical means for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle.
25. The infusion pump of claim 24 wherein said optical means monitors said positon encoder when said driving means is not being operated to ensure that said motor shaft has remained in the stop position.
26. The infusion pump of one of claims 23 to 25 further comprising processor means for initiating said driving means at selected intervals, corresponding to a calculated whole number and fractional value of clock cycles, to achieve a desired infusion rate.
27. The infusion rate of claim 26 further comprising a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the sum exceeds 1.0, an additional clock cycle is added to the whole number of clock cycles in the selected interval.
28. A pump tube mount comprising: a front wall having a hollow outlet extending therefrom; a rear wall having a hollow outlet; means for connecting said front wall to said rear wall at a fixed distance from one another; a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet; a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall.
29. The pump tube mount of claim 28 wherein said tabs cause said rear wall to make a snapping noise when the mount is properly installed.
30. The pump tube mount of one of claims 28 or 29 further comprising: two elongated fittings, one extending from said front wall and the other extending from said rear wall, each of said fittings having a cylindrical exterior portion and an indentation in said exterior portion; said tube being mounted on said fittings such that the exterior portion of each of said fittings makes surface contact with an inner circumference of said tube; and two collars surrounding said tube, each at a position concentrically aligned with the indentation in one of said fittings.
31. The pump tube mount of claim 30 wherein the indentation in each of said fittings comprises an annular groove.
32. The pump tube mount of one of claims 28 to 31 wherein said tube is made of silicone.
33. The pump tube mount of one of claims 30 to 32 wherein said collars surround said tube tightly enough to force the inner circumference of said tube at least slightly into the indentations aligned with said collars. | | Claims Count: 34 | Claims (English):
1. An infusion pump system comprising: a fluid source cartridge including a pump interface portion containing at least one linear fluid conduit being connected to an output port and a fluid source portion from which fluid is provided to said at least one fluid conduit; and a pump housing having a plurality of linear peristaltic pumps and means for receiving said fluid source cartridge such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
2. The infusion pump system of claim 1 wherein said output ports communicate with a multilumen output tube which connects to a multilumen connector means.
3. The infusion pump system of claim 1 wherein said output ports communicate with a manifold which feeds all fluids into a single output lumen.
4. The infusion pump system of claim 1 further comprising a programmable controller in said pump housing for individually controlling each of said peristaltic pumps thereby permitting sequential operation of the pumps at individually selected pumping rates.
5. The infusion pump system of one of claims 1 to 4 further comprising a clamp in the pump interface portion of said cartridge for securing said cartridge to said pump housing.
6. The infusion pump system of claim 5 wherein said clamp comprises a pair of clamp posts, each clamp post having a clamp head for insertion into said pump housing and means for changing said clamp posts between an open and a closed position.
7. The infusion pump system of one of claims 1 to 4 further comprising: a plurality of clamp posts extending from the pump interface portion of said cartridge, each post carrying an expandable member for insertion into said pump housing; and means for pulling on said clamp posts to expand said expandable members and to secure said cartridge to said pump housing.
8. The infusion pump system of claim 7 further comprising a support extending beneath the pump interface portion and connected to said clamp posts such that when said clamp posts are pulled to secure said cartridge, said support helps rigidify the pump interface portion a fixed distance from said pump.
9. The infusion pump system of one of claims 1 to 8 wherein each of said linear peristaltic pumps is operated by a direct current motor which rotates a motor shaft.
10. The infusion pump system of claim 9 further comprising along with each motor shaft, a position encoder rotatable in conjunction with its respective shaft for identifying a repeatable stop position for said shaft.
11. The infusion pump system of claim 9 wherein each of said direct current motors is selectively operable in a forward or reverse direction, the reverse direction being operable to quickly stop said motor.
12. The infusion pump system of one of claims 1 to 11 further comprising within said pump housing: a power supply line coupled to a battery; a diode coupled between said battery and said power supply line; and a receptacle for receiving a power jack to switch said power line into connection with said power jack instead of said battery, said diode permitting power to be provided by said battery until electrical contact is made between said power jack and said power supply line and said diode preventing said battery from being charged by said power supply line.
13. The infusion pump system of one of claims 9 to 11, 13 or 14 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
13. The infusion pump system of one of claims 9 to 11, 13 or 14 further comprising a battery for supplying power to said motor and a circuit for comparing current required by said motor with a reference which is a function of the voltage supplied by said battery for detecting an occlusion in said fluid supply line.
14. The infusion pump system of claims 1 to 13 further comprising at least one pump tube located in the pump interface portion of said cartridge, said at least one pump tube being positioned to permit interaction with said linear peristaltic pumps to force fluid out from said fluid source portion and through said tube.
15. The infusion pump system of one of claims 7 or 8 further comprising a clamp head on each of said clamp posts for pressing against said elastomeric member when said clamp post is pulled to secure said cartridge.
16. The infusion pump system of claim 15 wherein said each of said expandable members comprises a elastomeric ring encircling said clamp post adjacent its respective clamp head.
17. The infusion pump system of claim 6 wherein said means for changing comprises a handle hingedly attached to said clamp posts about a hinge axis, said axis being a first distance from a first edge of said handle and a second distance, longer than said first, from a second edge of said handle perpendicular to said first edge.
18. The infusion pump system of claim 17 wherein said handle is in the open position when it is positioned relative to the hinge axis so that said first edge is between said axis and said pump interface portion and where said handle is in the closed position when it is positioned relative to the hinge axis so that said second edge is between said axis and said pump interface portion.
19. The infusion pump system of claim 14 wherein said clamp comprises a support extending beneath all of said at least one pump tubes.
20. The infusion pump system of claims 1 to 19 wherein the end wall in said pump interface portion has a uniquely shaped opening to mate securely with a similarly shaped wall on a pump tube mount.
21. The infusion pump system of claim 20 further comprising a retaining stump adjacent said opening to hold the wall of said pump tube mount in the opening.
22. The infusion pump system of claims 1 to 21 comprising a ledge located between the pump interface portion and the fluid source portion of said cartridge, said ledge having an upper edge and at least one lower edge such that when a rear wall of a pump tube mount is lowered over said edge, tabs on said rear wall snap into said at least one lower edge.
23. An infusion pump comprising: a direct current motor operable to rotate a motor shaft; means for driving said motor; a pump mechanism actuated by said motor shaft; a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line.
24. The infusion pump of claim 23 further comprising optical means for reading said position encoder and for sending a stop signal to said driving means when said motor shaft has completed a pump cycle.
25. The infusion pump of claim 24 wherein said optical means monitors said positon encoder when said driving means is not being operated to ensure that said motor shaft has remained in the stop position.
26. The infusion pump of one of claims 23 to 25 further comprising processor means for initiating said driving means at selected intervals, corresponding to a calculated whole number and fractional value of clock cycles, to achieve a desired infusion rate.
27. The infusion rate of claim 26 further comprising a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the sum exceeds 1.0, an additional clock cycle is added to the whole number of clock cycles in the selected interval.
28. A pump tube mount comprising: a front wall having a hollow outlet extending therefrom; a rear wall having a hollow outlet; means for connecting said front wall to said rear wall at a fixed distance from one another; a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet; a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall.
29. The pump tube mount of claim 28 wherein said tabs cause said rear wall to make a snapping noise when the mount is properly installed.
30. The pump tube mount of one of claims 28 or 29 further comprising: two elongated fittings, one extending from said front wall and the other extending from said rear wall, each of said fittings having a cylindrical exterior portion and an indentation in said exterior portion; said tube being mounted on said fittings such that the exterior portion of each of said fittings makes surface contact with an inner circumference of said tube; and two collars surrounding said tube, each at a position concentrically aligned with the indentation in one of said fittings.
31. The pump tube mount of claim 30 wherein the indentation in each of said fittings comprises an annular groove.
32. The pump tube mount of one of claims 28 to 31 wherein said tube is made of silicone.
33. The pump tube mount of one of claims 30 to 32 wherein said collars surround said tube tightly enough to force the inner circumference of said tube at least slightly into the indentations aligned with said collars. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An infusion pump system comprising: a fluid source cartridge including a pump interface portion containing at least one linear fluid conduit being connected to an output port and a fluid source portion from which fluid is provided to said at least one fluid conduit; and a pump housing having a plurality of linear peristaltic pumps and means for receiving said fluid source cartridge such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps. | Independent Claims:
1. An infusion pump system comprising: a fluid source cartridge including a pump interface portion containing at least one linear fluid conduit being connected to an output port and a fluid source portion from which fluid is provided to said at least one fluid conduit; and a pump housing having a plurality of linear peristaltic pumps and means for receiving said fluid source cartridge such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
23. An infusion pump comprising: a direct current motor operable to rotate a motor shaft; means for driving said motor; a pump mechanism actuated by said motor shaft; a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line.
28. A pump tube mount comprising: a front wall having a hollow outlet extending therefrom; a rear wall having a hollow outlet; means for connecting said front wall to said rear wall at a fixed distance from one another; a tube mounted between said front wall and said rear wall to provide fluid communication between the hollow outlet and the hollow inlet; a rigid base portion supported by said connecting means beneath said tube and spaced apart from said front wall; and said rear wall extending downwards below the level of said rigid base portion and having tabs extending from the rear wall beneath said rigid base portion projecting forwards from the rear wall. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a programmable cartridge fed ambulatory infusion pump powered by a DC electric motor.
It is an object of this invention to provide a compact, lightweight infusion pump which may be used for ambulatory patients. It is a further object of this invention to provide a pump which can be conveniently used with fluid source cartridges.
There has been a demonstrated need for pumps which can intravenously administer a plurality of drug solutions. For example, multiple drug chemotherapy treatments have been used to treat diseases such as cancer. Many of the drugs used in chemotherapy and other therapies cannot be mixed together prior to an infusion. Some of these drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient. Pumps have been developed which can concurrently pump a plurality of fluids through a multilumen catheter into a patient. The multilumen catheter keeps the drugs separate until they reach the bloodstream. For example, in U.S. Patent No. 4,741,736 (Brown), a pump is disclosed which uses a roller to push fluid out of a plurality of compartments in an infusion pump. The different fluids in each of the compartments are pumped out at the same time by the action of the single roller.
In infusion pump patent, U.S. Patent No. 4,666,430 (Brown and Tai), a multiple syringe pump is disclosed in which a canister of compressed gas serves as the power source for pumping fluid out of a syringe. All of the syringes are controlled by the same canister of gas and variation in the pumping rate of a syringe is controlled by valves on the outlets of the syringes.
It is an object of the present invention to provide in a single ambulatory housing, separately and accurately controlled pumping mechanisms for each of a plurality of fluid sources. It is typical in infusion pumps where accurate infusion rates are desired to use a stepper motor. However, in providing an ambulatory pump, it is desirable to use smaller, lighter motors such as the dc electric motors of the present invention. A further object of the present invention is to provide controlled infusion rates with dc electric motors.
In order to deliver fluid at a precisely determined rate through a linear peristaltic pump, the pump value must be accurately positioned with respect to the fluid delivery tube. Any warping of the cartridge or any mispositioning of the pump may permit a leak when a pump valve is depressed against the tube. It is an object of this invention to provide a cartridge and tube mount which accurately position a tube within an infusion pump. It is desirable that accuracy be obtained using low cost plastic pieces.
SUMMARY OF THE INVENTION
The present invention is directed to an infusion pump system including a fluid source cartridge which is attachable to a pump housing. The pump housing has a plurality of linear peristaltic pumps. Fluids may be stored in the cartridge or provided through the cartridge from an external source such as an IV bag mounted on a pole. The cartridge has a linear fluid conduit which aligns with the peristaltic pump for each fluid when the cartridge is inserted into the housing. The conduits are provided in what is called herein the pump interface portion of the cartridge. The pumping of fluid through any of the fluid conduits in the cartridge is controlled by that conduits respective peristaltic pump.
The infusion pump housing may be advantageously provided with a programmable controller to permit individual control over each of the peristaltic pumps. This permits operating the pump sequentially or concurrently and at any selected pumping rate.
The pump according to the present invention is operated by a direct current motor. A position encoder rotatable in conjunction with the shaft of the motor provides an indication of a full cycle of the motor. Thus, by controlling the time delay between each motor cycle, the infusion pump rate can be controlled. The motor can be operated in reverse to assist it in stopping at the stop position indicated by the position encoder.
To provide accurate positioning of fluid pump tube with respect to the infusion pump, the cartridge of the present invention is provided with a handle clamp. The clamp is located in the pump interface portion of the cartridge. The clamp includes a bar which gives support to the pump interface portion, thereby holding the pump tubes firmly in position against the infusion pump.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
DETAILED DESCRIPTION OF THE DRAWINGS
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FIG. 1 is an isometric view of a pump and a cartridge of the present invention.
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FIG. 2 is a second isometric view of the cartridge and pump of the present invention.
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FIG. 3 is a bottom plan view of a pump of the present invention without the cartridge in place.
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FIG. 4 is a side cross-sectional view of a pump and the cartridge of the present invention.
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FIG. 4A is a close-up view of the optical sensor and position encoder of the pump of FIG. 4.
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FIG. 5 is a plan view of a cartridge for use in the present invention.
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FIG. 6 is a side elevational view of the cartridge of FIG. 6.
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FIG. 7 is an elevational view of the cartridge of FIG. 5
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FIG. 8 is an isometric view of the underside of an infusion pump with a cartridge of the present invention inserted.
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FIG. 9 is a partial cross-sectional view of the cartridge of the present invention inserted into an infusion pump with the clamp open.
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FIG. 10 is a partial cross-sectional view of the pump and cartridge of FIG. 8 with the clamp closed.
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FIG. 11 is a cross-sectional view of the rear portion of the pump and cartridge of FIG. 8.
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FIG. 12 is an isometric view of a cartridge of the present invention for use with pole mounted fluid source pouches along with pump tube mounts.
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FIG. 13 illustrates how a pump tube mount is inserted into the cartridge.
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FIG. 14 is an isometric view of the pump tube mount attached to a fluid source pouch.
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FIG. 15 is a plan view of the pump tube mount without the tube and its retaining rings.
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FIG. 16 is an elevational view of the pump tube mount of FIG. 15.
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FIG. 17 is an isometric view of a cartridge of the present invention for use with mini-bag fluid sources.
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FIGS. 18A and 18B are a schematic of the circuitry for operating the pump motors.
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FIG. 19 is a schematic of the electronic circuitry devoted to a single pump motor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, a pump housing 10 is provided for pumping fluid from a multiple fluid cartridge 20. The pump housing 10 is provided with a liquid crystal display 12, a keyboard 14 and as shown in FIG. 2, programming jack 16. The underside of the pump housing 10 forms a cavity for receiving the cartridge 20. The cavity extends through one end of the pump housing 10.
The cartridge 20 houses one or more pump tube mounts 24. The portion of the cartridge 20 housing the pump tube mounts 24 is referred to herein as the pump interface portion. The remainder of the cartridge is referred to as the fluid source portion. Each pump tube mount 24 is connected to a fluid source which is either stored in a bag or a pouch in the fluid source portion of the cartridge or stored on a bag hanging from an intravenous delivery pole. To connect with a bag hanging from a pole, the cartridge's fluid source portion may have a window through which tubing may be inserted to connect the bag with the tube mount. Each pump tube mount 24 includes a compressible tube 22 made from a material which is inert to the fluids which will be fed through the tube. At the outer end of the pump tube mount 24, a luer connector 26 serves as the outlet for delivering fluid into an output lumen.
Individual output lumens may be connected to each of the luer connectors 26. These lumens may remain separate or they may be fused together to form a multilumen tube for outputting the fluid to a connector for making connection with an implanted catheter, for example. The multilumen output tube may be connected to any of a variety of multilumen connectors. A needle connector may be used in which each lumen is connected to a hollow injection needle. The needle connector may be inserted through a silicone block to make connection with a connector for a multilumen catheter. Another option is a multilumen connector such as that described in co-pending U.S. Patent Application Serial No. 07/178, 673 filed on April 7, 1988, owned by the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein. A third possibility for the multilumen output tube is to connect each lumen separately to a luer connector so that individual connections can be made to four separate catheter lines.
An alternative connector for delivering fluid from the cartridge to a patient may be a single lumen manifold 28 as shown in FIG. 1. The manifold 28 can be provided with four connectors 30 for securely attaching to the luer connectors 26, extending from the cartridge. Each of these connections may then lead to a single lumen 32. When this type of connector is used, it is normal practice to make the fluid source furthest from the manifold output a flushing solution. With this arrangement, the pump generally delivers one solution at a time or one fluid in conjunction with the flushing solution. Before switching from one solution to another, the flushing solution is delivered to clean out the single lumen so as to prevent intermixing of different fluid solutions. This would be necessary in the case of drugs which are either incompatible or which cause precipitation when mixed.
The cartridge 20 is provided with several positioning tabs 34 which extend from the rear end of the cartridge. The tabs 34 are inserted into holes located in the rear of the cavity of the pump. The engagement of the tabs 34 with the holes secures one end of the cartridge in the pump 10. The other end is secured by clamp heads 25 whose operation will be discussed in greater detail with respect to FIGS. 8-11.
The cartridge 20 may be used with a pump having a key operated latch 36. The latch 36 engages a tab 38 extending from the rear end of the cartridge 20. The latch 36 is used as a lock to prevent tampering with the drug solutions stored within the cartridge.
FIG. 2 illustrates flexible pouches 44 used as the fluid sources within the cartridge 20. Each fluid source pouch 44 is connected to a pump tube mount 24. At present, the following procedure is suggested for using the cartridge 20 when it is provided with empty pouches 44. The desired fluid is injected into the connector outlet 26, using a syringe or other conventional means. After filling the pouch 44 with the desired amount of fluid, the connector outlet 26 is attached to the output line. When all of the pouches are filled with their fluid, the cartridge may be inserted into the pump housing 10 and a purge cycle may be run on each of the fluid sources to pump out all of the air which may have gotten into the pouch or pump tube. After purging the air, the cartridge 20 is ready for use in an infusion.
Referring now to FIGS. 3 and 4, the presently preferred pump for use with the present invention is provided with a plurality, four in this case, of linear peristaltic pumps. The illustrated pump is a three finger pump, called such because of the three cams which are repeatedly lowered and raised to provide the desired pumping action. Each pump rotates a cam shaft 56 which selectively pushes against three cam followers or "fingers", including an output valve 46, a pump plunger 48 and an input valve 50. Power for the pump may be provided by a battery pack which can be loaded into a cavity behind a battery cover 52 alongside the peristaltic pumps within the housing 10. Alternatively, power can be provided through a jack 17. Each pump is provided with its own motor 54 which turns a cam shaft 56. In accordance with the present invention, each motor 54 is a direct current electric motor. The cam shaft 56 is provided with a timing disk or position encoder 58 shown in greater detail in FIG. 4A. The timing disk is solid except for a sector which is removed. The disk can thus be read by an optical sensor circuit 152 on a printed circuit board 60 to count the rotations, thereby controlling the rate and location of the cam shaft 56. The optical sensor includes a light emitting diode 57 and a photodetector 59.
To maintain improved accuracy, the cam followers should be made to always press against the tube 22, even when in the open position. The pump tube 22 is supported relative to the cam followers by a rigid base 67. A clamp, including clamp handle 69 and clamp heads 25, ensures that the rigid base 67 is always positioned a fixed distance from the cam followers on the pump.
Pumping is performed as follows. With the pump plunger 48 and the input valve 50 retracted, the output valve 46 is lowered to close off the fluid conduits. This permits the pump tube 22 to fill with fluid. This is the preferred position whenever the pump is inactive. In this position, the open sector of the position encoder is aligned with the light emitting diode and photo receiver. Next, the input valve 50 is lowered to close off the pump tube 22 and prevent fluid from flowing back into the fluid source 44. The cam shaft is then turned permitting the tube 22 to expand, pushing the output valve 46 to open. The pump plunger 48 is activated by the cam shaft to push fluid out of the tube 22 and through the outlet 26. Then the output valve 46 is again closed. The pump plunger 48 and the input valve 50 are permitted to open, thereby allowing the pump tube to refill with fluid. Thus, fluid is pumped out of the fluid source. The pump tube in the presently preferred embodiment has an inner diameter of .086 inches, an outer diameter of 0.156 inches and a 50 durometer Shore A. The rate of pumping is controlled by knowing the precise volume pumped in each cycle and monitoring the number of pumping cycles per unit of time. The presently preferred embodiment pumps 50 microliters in each pump cycle.
A programmable microprocessor is provided on a control circuit board 76. Each of the four pump motors is controlled by the motor control board 60 and the controller board 76. The control circuits are described in greater detail below with respect to FIGS. 18 and 19. Since each fluid source has its own pump and pump motor, the rate and sequence of fluid infusion is entirely flexible. With a sufficient power source, infusions may take place concurrently or sequentially and at any rate. The present embodiment can pump fluid anywhere between .01 and 200 milliliters per hour. The desired sequence and rates of infusion are programmed into the controller board 76 through the programming jack 16. Thus, in accordance with the present pump, multiple fluid infusion treatments may be delivered to a patient in any number of sequences and rates. Thus, the pump provides physicians with great latitude for selecting multiple-fluid drug regimens for treating patient illnesses.
Referring now to FIGS. 5-7, the cartridge 20 shall be described in greater detail. The cartridge of the presently preferred embodiment is made of polycarbonate. FIG. 5, illustrates a cartridge 20 of the type with a window 62. The window provides a hole through which tubing can be fed to connect the pump tubes 22 with fluid sources. A discontinuous dividing wall 64 separates the cartridge 20 into a pump interface portion 66 and a fluid source portion 68. The fluid source portion 68 may provide fluids through a window such as that shown in FIG. 5. Alternatively, the fluid source portion 68 may be filled with fluid source pouches 44. With the pouches 44, the cartridge 20 can be used by an ambulatory patient. The cartridge 20 with a window 62 permits the same pump apparatus to be used with a pole mounted infuser and IV bags. Alternatively, the fluid source portion 68 of the cartridge 20 can be made extra deep, as shown in FIG. 17, to provide room for drug solution mini-bags. Such mini-bags provide more volume of fluid than the pouches 44. The mini-bag cartridge of FIG. 17 includes an inclined floor to help urge the fluid in the mini-bags towards the opening in the bottom of the bag. As such, the pump apparatus can be used with the mini-bags to provide a portable infusion apparatus which can be used by a patient undergoing high fluid volume infusions in the home. The mini-bag cartidge is provided with an opening for access to its clamp handle. A ring 71 may be attached to the handle for easier operation in pulling the handle open.
Referring to FIG. 6, a ledge 75 is formed by the dividing wall 64. The ledge 75 has an upper edge 77 at the level of the base of the pump interface portion of the cartridge. The ledge 75 has a lower edge 78 or a series of individual lower edges 78 which are provided for engaging the pump tube mounts.
The end wall 70 of the cartridge has a series of uniquely shaped openings 80 which accommodate the outlet ends of the pump tube mounts. Immediately behind each opening 80 is a retaining stump 82. The opening 80 is shaped to secure the front wall 84 of the pump tube mount in two directions. The front wall 84 is prevented from moving up and down or left and right when installed within the cartridge opening 80. Furthermore, the opening 80 is given a unique shape as if it were a lock for a key. Just as a key may be uniquely designed to fit into a lock, the front wall 84 of a pump tube mount can be uniquely shaped to fit the unique shape of the opening 80. This feature helps to ensure that only the appropriate tube mounts are inserted into the cartridge. The retaining stump 82 prevents the wall from moving back into the cartridge. The final direction of freedom is secured by the interaction of the rear wall of the pump mount with the ledge 75 of the cartridge.
Referring now to FIGS 8-10, the mechanics for holding the cartridge in place against the pump shall be described. A clamp is located in the pump interface portion of the cartridge. Since this is where the pump tubes are located, it is critical that this portion of the cartridge be repeatably and accurately positioned and held against the infusion pump. It is important that the pump interface portion 66 of the cartridge 20 be held in a fixed position against the pump, since if the position is off it is possible that one of the pump fingers would not fully close off a pump tube as required to provide precise infusion rates.
The clamp includes two clamping posts 81 each with a clamp head 25. The clamping posts and clamp head are made of stainless steel in the presently preferred embodiment. Surrounding each clamping post 81 beneath its clamp head 25 is a compressible elastomeric tube 83, made of silicone in the presently preferred embodiment. The clamping post 81 may be formed by a screw 85 and threaded shaft 87 as shown in FIG. 9. Alternatively, the clamping post 81 may be a single rod with a flaired top portion as shown in FIG. 10. The clamp head 25 in FIG. 9 is formed by a washer 89 and the head of the screw 85. The clamp head 25 is formed about the flaired top of the rod in FIG. 10. The clamping posts 81 are axially movable within mounting walls 91 in the pump interface portion of the cartridge.
At the end of each clamping post 81 extending through the bottom of the cartridge 20, is inserted an expansion pin 93. The expansion pins 93 act as an axle about which the clamp handle 69 can be rotated. The pins 93 engage a hole in the clamp handle which is positioned so as to be a short distance from one edge and a longer distance from a second edge. As shown in FIG. 9, when the handle 69 is protruding out from the cartridge, the expansion pin 93 is between the handle and the edge which is a short distance from the pin. Thus, the pin is held a short distance from the bottom side of the pump interface portion of the cartridge. When the clamp handle 69 is pushed against the cartridge, the expansion pin 93 is pulled on until the clamp handle 69 rests on its side. With the handle on its side against the cartridge the expansion pin 93 has been pulled into a second position in which it is a longer distance from the bottom side of the pump interface portion. In this second position, the clamp head 25 is pulled down against the silicone tube 83. The tube 83 is compressed axially and expands radially. The tube 83 expands filling a countersunk hole 95 in the infusion pump base.
When the clamp is in the locked position as shown in FIGS. 8 and 10, the expansion pins 93 pull the clamp handle 69 upwards and the clamp head downwards. This secures the pump interface portion a fixed distance from the infusion pump base. The clamping action is sufficiently strong so that any affects of the pump fingers are insignificant. Additional support may be provided by an inner bar 97 which is a part of the handle 69 stretching between the clamping posts. The handle 69 and inner bar 97 are made from Delron in accordance with the presently preferred embodiment. The handle with its inner bar 97 extends across all four of the pump tube locations. Thus, the pull of the clamp is directly applied underneath each of the pump tubes. In this manner, the clamp of the present invention advantageously rigidifies and supports the base under each of the pump tubes maintaining the base at an accurate distance from the pump fingers.
FIG. 11 shows the engagement of the rear portion of a cartridge 20 with the pump housing. In order to insert a cartridge 20 into an infusion pump, the rear edge is inserted first. Tabs 34 are inserted into mating holes 99 in the pump housing 10. Then the pump interface portion of the cartridge is swung up into place. The clamp heads 25 enter the pump housing 10 through the countersunk holes 95 when the cartridge 20 is properly positioned. When the cartridge is in place, the clamp handle 69 is pushed against the cartridge to secure the cartridge in place. The key operated latch 36 may also be secured against the cartridge to protect against unauthorized access to the drug solutions in the cartridge.
The pump tube mounts for insertion into a cartridge are shown in FIGS. 12-16. The front wall 84 of a pump tube mount can be seen in FIG. 12. The front wall 84 is shaped so as to mate with the openings 80 in the cartridge. Extending from the front wall 84 is an outlet 26 which is preferably a female luer connector. Two side walls 86 connect the front wall 84 to a rear wall 88. The rear wall 88 of the pump tube mount extends downward below the base 67 of the pump tube mount. At the lower end of the rear wall 88 is a pair of tabs 90 which engage the lower edge 78 of the ledge 75 in the cartridge 20. The dividing wall 64 in the cartridge 20 is discontinuous providing openings for each of the pump tube mounts. Also illustrated in FIG. 12 is a bag spike 92, which is inserted into a bag of fluid solution hanging from a pole to connect the pump with the fluid solution.
FIG. 13 shows how the pump tube mount is inserted into the cartridge. The rigid base 67 beneath the pump tube 22 does not extend all the way to the front wall or the rear wall. At the front wall, this provides a space into which the retaining stump 82 can be extended. Thus, the first step, is to position the front wall 84 up against the stump 82. The rear wall 88 is then lowered over the ledge 75 in the cartridge 20. As the rear wall 88 is lowered, the front wall 84 pivots into place within the opening 80. The rear wall 88 is lowered until the tabs 90 snap into the openings beneath the lower edge 78. The rear wall 88 is located so as to fit snugly against the ledge 75. Thus, when the tabs 90 have not yet been lowered into the openings beneath the edge 78, the tabs 90 are forcing the rear wall 88 away from its normal resting position. Once the tabs get beneath the lower edge 78, the rear wall 88 is free to resume its resting position and therefore springs back against the ledge to make a snapping noise. The snap can be heard and felt so as to reassure the user that the pump tube mount is correctly positioned. The engagement of the tabs and the lower edge 78 keeps the pump tube mount in its correct position. When in place, the rear wall 88 against the ledge 75 prevents the pump tube mount from moving forward. This, in combination with the retaining stump 82 and the opening 80 securely holds the pump tube mount in a known position in three dimensions.
FIG. 14 illustrates a disposable pump tube mount. The tube mount, according to the presently preferred embodiment, is made of polycarbonate. The pump tube mount shown is attached to a flexible fluid source pouch 44. The fluid source pouch 44 may be adhesively bound to an inlet 94 extending from the rear wall 88 of the pump tube mount. A luer cap 96 may be screwed on to the luer connector 26 when the tube mount is not hooked up to an output line.
In FIG. 15, the pump tube mount is shown without a tube 22. Extending inwards from the front wall and the rear wall 88 is a fitting 98. The fitting 98 has a cylindrical exterior portion which makes surface contact with the inner circumference of the tube 22. The surface contact provides a frictional force between the fitting 98 and the inner circumference of the tube 22. In certain applications, this frictional force may be sufficient to hold the tube on the fittings. The presently preferred material for the tube 22 is Dow Corning medical-grade silicone.
Further force to hold the pump tube on the fitting may be provided by a barb extending from the fitting to dig in and hold onto the tube. Alternatively, in accordance with the presently described embodiment, an indentation such as an annular groove 100 is made in the cylindrical fitting 98. If the tube 22 fits tightly enough over the fitting 98, the silicone will slightly extend into the groove 100. This will provide an edge against the fitting which will hold the tube in place. To ensure that the silicone is depressed into the groove 100, a collar 102 may be placed over the tube concentrically aligned with the groove 100. The engagement of the tube with the groove provides adequate resistance against the shear forces created by the pumping action. The collar 102 is preferably a rigid material which is sized to compress the silicone into the groove 100. The collar 102 may be made from a material such as PVC or stainless steel.
Referring now to FIG. 16, the rigid base 67 is shown. The base 67 is supported by the sidewalls 86 of the pump tube mount. As can be seen in FIG. 16, there is a space between the rigid base 67 and the front wall 84 into which the stump 82 can extend. In operation, the base 67 rests against the bottom of the pump interface portion of the cartridge and is securely held in position by the clamp which extends across the pump interface portion.
The electronics for operating a direct current motor in the infusion pump of the present invention shall be described with reference to FIGS. 18A, 18B and 19. The program functions of the infusion pump are controlled by a microprocessor 110. The presently preferred microprocessor is an 80C31. A connection is provided between the microprocessor 110 and a serial I/O interface 112. The serial interface provides for bi-directional communication between the programmable infusion pump and attached equipment. Applications for the serial I/O interface include 1) the receipt of an infusion schedule from an external programmer, 2) external initiation of a self-test mode with transmission of the self-test status, 3) external initiation of diagnostic functions, and 4) externally triggered events such as a schedule stop or a special infuse sequence.
The microprocessor operates the liquid crystal display 12 through an LCD controller. The presently preferred LCD controller is a Philips PCF 2111.
A status port 116 interacts with the keypad 14 and battery monitor 118. The battery monitor 118 detects when the battery is either low, dead or not inserted.
The internal battery 120 may be used to supply power to the circuitry. A power jack 17 permits the pump to be run on external power rather than using the battery 120. The voltage provided by the battery or power jack is indicated as V BAT. A schottky diode reduces VBAT about a quarter of a volt to get Vcc which is used by most of the circuitry. When a plug 123 for providing power is fully inserted into the power jack 17 a switch 122 is forced open, breaking its contact. The power for the programming circuitry is then maintained by the external source. In order to avoid an undesirable break in the provision of power to the infusion pump when an external plug 123 is inserted into the power jack 17, a diode 124 is connected to the battery 120. When a battery is installed in the infusion pump, current can pass from the battery through the diode 124. When a power plug is inserted into the jack 17, a non-conducting end 125 of the plug may contact the switch and break the switch contact before electrical connection is made between the plug and the power line for the circuitry. When the switch is broken the battery continues to provide power through the diode 124 thereby avoiding a temporary loss of power. Once electrical contact is made between the external source and the power line, power is essentially provided by the external source and the diode 124 prevents the external power source from charging the non-rechargeable battery 120.
A timing signal is provided to the microprocessor 110 by a 1.8432 megaHertz oscillator 126.
A wake-up timer 128 divides the 32,768 Hz signal from an oscillator 130 so that a reset signal is delivered each sixteenth of a second from the wake-up timer to the microprocessor. The microprocesor is awakened each sixteenth of a second at which point it cycles through its control program. The microprocessor 110 manipulates and monitors counters to generate delays inserted between each motor startup to obtain a desired infusion rate. Each time the motor is started, it performs a complete pump cycle. Given a fixed volume of fluid delivered for a pump stroke, an infusion rate can be converted into a delay time between pump cycles. The delay time for the desired infusion rate for each pump is input into the pump control board through the programming jack 16. For example, a flow rate of 200 ml/hr converts to a delay of 14.4 sixteenths of a second for a stroke volume of .05 ml.
The processor keeps track of the whole and fractional cycles separately. If the cycle count is a whole number such as 14.0, then every fourteeen sixteenths of a second, (every 14 cycle periods), the motor will be started in a microprocessor program cycle. When a fractional cycle is required for a given rate, the fraction value is accumulated until it exceeds 1. Then, an additional cycle is added to the cycle count. For the case where the cycle time is 14.4 sixteenths, a first motor cycle will begin after 14 sixteenths. 4/10 is carried over. The next pump cycle will be started after the next 14 sixteenths. Again, 4/10 is added to the fraction accumulator, leaving .8 as the accumulated total. Fourteen clock periods later the motor will be started again. This time when the 4/10 is added to the accumulator, unity is exceeded with an additional fraction of 2/10. An additional cycle is added to the cycle count so that the next motor cycle will not begin until 15 clock periods later. The succeeding cycle will again have a cycle count of 14, until the fractional accumulator exceeds unity. Thus, for a pumping time of 14. 4 sixteenths, the sequence will be 14, 14, 14, 15, 14, 14, 15. This will provide a sufficiently accurate infusion rate.
The fail safe timer makes sure that the motors are not operated if the microprocessor is not working properly. The microprocessor resets the fail safe timer each control program cycle, that is, each sixteenth of a second. Should the fail safe timer not be reset within a one second period, its output will stop the motors and the microprocessor will generate an error message.
Memory 134 is provided to work in conjunction with the microprocessor 110. The memory 134 includes EPROM for the permanent program storage and RAM for temporary storage of program instructions to control infusion and for general memory use. An address latch and decode circuit 136 is provided for interfacing the microprocessor 110 with the memory 134 and status port 116. The lower 8 bits of the microprocessor's address are multiplexed with the data bus, so the address must be latched synchronously with the address latch enable signal in order to distinguish it from data. The decoder portion of circuit 136 allows the microprocessor to enable any chosen one of the devices on the data bus.
The microprocessor 110 operates the motor control and an audio signaller 138. The audio signal may be generated in response to an alarm condition or to annunciate events such as a key press or serial link connect. Communication with the various motors in the infusion pump is handled through the output circuitry 140 and the input circuitry 142. The motor control input output circuitry communicates with the motors over a bus 144.
Each of the motors in the infusion pump is provided with circuitry for driving and controlling that motor. The circuit details of the presently preferred embodiment are shown in FIG. 19 for all of the motor driving control circuitry. The circuitry is the same for each one of the motors. A start signal from the microprocessor is received and latched in the control latch 146. This is passed to the one shot 148 where a signal is produced for operating a motor drive 150 in the forward direction. On the forward direction transistors Q2 nd Q5 shown in FIG. 19 are biased on. The motor drive may be an H bridge circuit so that it can produce a positive or negative signal to the motor.
The motor rotates in response to the signal from the motor drive 150 remaining on until the stop position is reached, as indicated by the optical sensor. The optical sensor 152 includes a light emitting diode 57 and a photodetector 59, which in the presently preferred embodiment is a phototransistor. When the motor shaft is in the stop position, the light from the LED is visible to the phototransistor and a signal is provided by the sensor indicating that the motor shaft is in its stop position. Once the motor shaft moves, the open sector in the position encoder rotates away from the optical sensing region and the solid portion of the position encoder blocks the light from the LED to the phototransistor 59. Once a complete cycle of the motor shaft has been made, an open sector of the position encoder reaches the optical sensing portion and the light from the LED becomes once again visible to the phototransistor. Thus, the optical sensor produces a signal indicating the stop position has been reached.
This stop signal resets the control latch 146, removing drive from Q2 and Q5. When the control latch 146 is reset, its output signal to the one shot 148 goes high and a signal opposite in polarity to the start signal is provided by the one shot to the motor drive 150. This opposite polarity signal causes the motor drive to operate in reverse for a time controlled by the RC time constant of R4 and C2. In the presently preferred embodiment, the reverse signal operates for about 36 milliseconds. The optical sensor sends a "complete" signal to the microprocessor so that it knows a revolution has been completed.
The microprocessor is operating a counter, waiting for the complete signal to be returned within sixteen control program cycles. If it isn't, an error message is generated. When a motor is idle, compliance is confirmed by reading the optical sensor signal to ascertain shaft position. Should the optical sensor provide a signal indicating the motor shaft has moved from its stop position, an off-line error is displayed by the processor. Should the optical sensor signal subsequently indicate the stop position has been reached, it is assumed that the motor is in a run-a-way condition and an alarm and error display is generated. Idle state monitoring is performed during the normal program control cycle and so occurs at the 16 Hz rate.
An occlusion monitor 154 is also provided. If the motor is having difficulty turning because of an occlusion in the catheter line or some other blockage, a signal will be fed from the motor drive 150 to the occlusion monitor 154. Referring to FIG. 19, this will be in the form of an increase in the motor current which flows through a 1 ohm resistor, R17. The voltage across R17 is sensed at a time when the pump plunger 48 is maximally depressed, since the motor current is proportional to load, occlusion can be sensed by comparing the voltage across R17 to a level consistent with normal operation. Reference voltage VTH2 in the occlusion monitor 154 represents the normal level.
VTH2 is provided by the occlusion reference 155. Rather than provide a fixed VTH2, the reference circuit 155 makes VTH2 a function of the battery voltage. In this manner, occlusion sensing is not sensitive to changing battery voltage. VTH2 is taken from a voltage divider formed by resistors R23 and R81. The voltage across R17 is amplified and filtered by amplifier U3B. The gain of U3B can be set by the value of R14 to be consistent with the value of VTH2, thereby causing comparator U3A to change state at the proper level of occlusion. Comparator U3A provides an "occlude" output when the output of U2B exceeds the normal established by VTH2. This will cause a signal to be sent over the bus 144 to the microprocessor. On detection of the occlusion signal, the microprocessor will send a stop signal to the motor, suspend the current infusion schedule and display the error condition on the infuser display. Since an increase in current across R17 will be caused by starting or stopping the motor, the microprocessor will not check the occlusion signal during those time frames. The microprocessor is programmed to check the occlusion signal only when the motor is at the stage where it is pushing down on the pump plunger 48.
As demonstrated by the above description, it is possible with the present invention to use a direct current motor in conjunction with the position encoder so as to achieve accurate infusion rates. Since one complete cycle of the motor can be repeated with precision and since the volume of fluid pumped during a complete cycle is accurately determinable, the volume per unit time can be precisely controlled by the microprocessor controlled infusion pump of the present invention by regulating the number of pump cycles per unit time.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. For example, a combination of dynamic braking and reverse pulsing could be used to stop the motor. Also, the brake pulse width and, therefore, the energy expended could be modified by use of other sensing positions on the motor output shaft. Hall effect sensors and small magnets could be used to sense shaft position. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I-Flow Corporation,US,00719122 | | Assignee/Applicant First: I-Flow Corporation,US,00719122 | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I-Flow Corporation | | Assignee - Original w/address: I-Flow Corporation,US,00719122 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Busak, Steven | Kienholz, Charles M. | Hayob, Wayne | Papic, Ferrell D. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Busak, Steven | Kienholz, Charles M. | Hayob, Wayne | Papic, Ferrell D. | | Inventor - w/address: Brown Eric W.,US | Busak Steven,US | Kienholz Charles M.,US | Hayob Wayne,US | Papic Ferrell D.,US | | Inventor Count: 5 | | Attorney/Agent: von Bezold, Dieter, Dr. et al | | Attorney/Agent - w/Address: von Bezold Dieter Dr. et al|Dr. Dieter von Bezold Dipl.-Ing. Peter Schuetz Dipl.-Ing. Wolfgang Heusler Brienner Strasse 52, D-8000 Muenchen 2, DE|00012341 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A2 | | Publication Date: 1990-02-14 | | Publication Month: 02 | | Publication Year: 1990 | | Application Number: EP1989111139A | | Application Country: EP | | Application Date: 1989-06-19 | | Application Month: 06 | | Application Year: 1989 | | Application with US Provisional: EP1989111139A | 1989-06-19 | | Priority Number: US1988216512A | US1989301628A | US1989351981A | | Priority Country: US | US | US | | Priority Date: 1988-07-08 | 1989-01-24 | 1989-05-15 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | 01 | 05 | | Priority Year(s): 1988 | 1989 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 5/14228
A61M 5/142
| A61M 5/14244
A61M 5/16827
A61M 2205/12
Y10S 128/12
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142G6, A61M0005142, K61M0005168A11, K61M0005142P, K61M020512 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
DE3500467A1
| 1986-07-10
| Kaemmerer Erich Dr.med.
| BERNARD GEB KAEMMERER INGRID
| A
| 0 (Examiner)
|
| Title: Variable infusion device for medical purposes |
| |
US4781548A
| 1988-11-01
| Alderson Richard K.
| ALDERSON RICHARD K
| AP
| 0 (Examiner)
|
| Title: Infusion pump system and conduit therefor |
| |
EP204977A1
| 1986-12-17
| Howson David C.
| INTELLIGENT MEDICINE INC
| Y
| 0 (Examiner)
|
| Title: Syringe drive apparatus |
| |
EP182502A2
| 1986-05-28
| Berg Harvey F.
| DELTEC SYSTEMS INC
| A
| 0 (Examiner)
|
| Title: Drug delivery system |
| |
US4741736A
| 1988-05-03
| Brown Eric W.
| I FLOW CORP
| AD
| 0 (Examiner)
|
| Title: Programmable infusion pump |
| |
US4657486A
| 1987-04-14
| Stempfle Julius E.
| STEMPFLE JULIUS E
| Y
| 0 (Examiner)
|
| Title: Portable infusion device |
| |
| | Count of Cited Refs - Patent: 6 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
DE10120543A1
| 2002-11-07
| GROENING RUEDIGER
|
EP1380314A1
| 2004-01-14
| BAXTER INT
|
EP2661290A2
| 2013-11-13
| CAREFUSION 303 INC
|
EP2661290A4
| 2014-07-16
| CAREFUSION 303 INC
|
EP897473A1
| 1999-02-24
| SARCOS INC
|
EP897473B1
| 2004-11-03
| SARCOS INC
|
SG85654A1
| 2002-01-15
| BAXTER INT
|
WO2000051670A1
| 2000-09-08
| BAXTER INT
|
WO2007070232A1
| 2007-06-21
| HEWLETT PACKARD DEVELOPMENT CO
|
WO2011154160A1
| 2011-12-15
| BRITANNIA PHARMACEUTICALS LTD
|
WO2012094257A2
| 2012-07-12
| CAREFUSION 303 INC
|
| | Count of Citing Patents: 11 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1991-11-27
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-04-04 |
| |
1990-10-03
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0354324 A3 DE; FR; GB; IT; SE |
| |
1990-02-14
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0354324 A2 DE; FR; GB; IT; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R DE;FR;GB;IT;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP354324A2
| 19900214
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
|
| Title: INJECTION PUMP DEVICE |
| |
US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple fluid cartridge and pump |
| |
US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
US5131816A
| 19920721
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP354324A2&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP354324A2&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 22/43 | | JP4082564A | INJECTION PUMP DEVICE | | Publication Number: JP4082564A | | Title: INJECTION PUMP DEVICE | | Title (Original): INJECTION PUMP DEVICE | | Title (English): INJECTION PUMP DEVICE | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: | Abstract:
PURPOSE: To provide a small-size and light-weight injection pump used by a patient able to walk by providing a pump mechanism which is separately and accurately controllable in relation to a plurality of fluid sources, in a single moving housing.
CONSTITUTION: Fluid from a plurality of fluid cartridges 20 is discharged. A pump housing 10 is provided with a liquid crystal display 12, a keyboard 14, and a programming jack. The cartridges 20 are provided with one or more pump tube mount parts 24 and a Luer connector 26 in an outside edge of the pump tube mount parts 24 becomes an exit for liquid fed to an output internal cavity. The pump is provided with a plurality of linear peristatic pumps, each pump rotates a cam shaft, and this cam shaft selectively pressurizes a cam follower including an output valve, a pump plunger, and an input value. A programmable microprocessor is provided on a control circuit board, a desirable injection order and rate are programmed in a controller board via a programming jack, and a medical prescribed of a plurality of liquid medicines is selected from a wide range.
COPYRIGHT: (C)1992,JPO&Japio
PURPOSE: To provide a small-size and light-weight injection pump used by a patient able to walk by providing a pump mechanism which is separately and accurately controllable in relation to a plurality of fluid sources, in a single moving housing. CONSTITUTION: Fluid from a plurality of fluid cartridges 20 is discharged. A pump housing 10 is provided with a liquid crystal display 12, a keyboard 14, and a programming jack. The cartridges 20 are provided with one or more pump tube mount parts 24 and a Luer connector 26 in an outside edge of the pump tube mount parts 24 becomes an exit for liquid fed to an output internal cavity. The pump is provided with a plurality of linear peristatic pumps, each pump rotates a cam shaft, and this cam shaft selectively pressurizes a cam follower including an output valve, a pump plunger, and an input value. A programmable microprocessor is provided on a control circuit board, a desirable injection order and rate are programmed in a controller board via a programming jack, and a medical prescribed of a plurality of liquid medicines is selected from a wide range. | Abstract (English):
PURPOSE: To provide a small-size and light-weight injection pump used by a patient able to walk by providing a pump mechanism which is separately and accurately controllable in relation to a plurality of fluid sources, in a single moving housing.
CONSTITUTION: Fluid from a plurality of fluid cartridges 20 is discharged. A pump housing 10 is provided with a liquid crystal display 12, a keyboard 14, and a programming jack. The cartridges 20 are provided with one or more pump tube mount parts 24 and a Luer connector 26 in an outside edge of the pump tube mount parts 24 becomes an exit for liquid fed to an output internal cavity. The pump is provided with a plurality of linear peristatic pumps, each pump rotates a cam shaft, and this cam shaft selectively pressurizes a cam follower including an output valve, a pump plunger, and an input value. A programmable microprocessor is provided on a control circuit board, a desirable injection order and rate are programmed in a controller board via a programming jack, and a medical prescribed of a plurality of liquid medicines is selected from a wide range.
COPYRIGHT: (C)1992,JPO&Japio | | Abstract (French): | | Abstract (German): | Abstract (Original):
PURPOSE: To provide a small-size and light-weight injection pump used by a patient able to walk by providing a pump mechanism which is separately and accurately controllable in relation to a plurality of fluid sources, in a single moving housing.
CONSTITUTION: Fluid from a plurality of fluid cartridges 20 is discharged. A pump housing 10 is provided with a liquid crystal display 12, a keyboard 14, and a programming jack. The cartridges 20 are provided with one or more pump tube mount parts 24 and a Luer connector 26 in an outside edge of the pump tube mount parts 24 becomes an exit for liquid fed to an output internal cavity. The pump is provided with a plurality of linear peristatic pumps, each pump rotates a cam shaft, and this cam shaft selectively pressurizes a cam follower including an output valve, a pump plunger, and an input value. A programmable microprocessor is provided on a control circuit board, a desirable injection order and rate are programmed in a controller board via a programming jack, and a medical prescribed of a plurality of liquid medicines is selected from a wide range.
COPYRIGHT: (C)1992,JPO&Japio | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I FLOW CORP | | Assignee/Applicant First: I FLOW CORP | | Assignee - Standardized: AI FUROO CORP | | Assignee - Original: I FLOW CORP | | Assignee - Original w/address: I FLOW CORP | | Assignee Count: 1 | | Inventor: BROWN ERIC W | BUSAK STEVEN | KIENHOLZ CHARLES M | HAYOB WAYNE | PAPIC FERRELL D | | Inventor First: BROWN ERIC W | | Inventor - Original: BROWN ERIC W | BUSAK STEVEN | KIENHOLZ CHARLES M | HAYOB WAYNE | PAPIC FERRELL D | | Inventor - w/address: BROWN ERIC W | BUSAK STEVEN | KIENHOLZ CHARLES M | HAYOB WAYNE | PAPIC FERRELL D | | Inventor Count: 5 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: JP | | Publication Kind Code: A | | Publication Date: 1992-03-16 | | Publication Month: 03 | | Publication Year: 1992 | | Application Number: JP1989174111A | | Application Country: JP | | Application Date: 1989-07-07 | | Application Month: 07 | | Application Year: 1989 | | Application with US Provisional: JP1989174111A | 1989-07-07 | | Priority Number: US1988216512A | US1989301628A | US1989351981A | | Priority Country: US | US | US | | Priority Date: 1988-07-08 | 1989-01-24 | 1989-05-15 | | Priority Date - Earliest: 1988-07-08 | | Priority Month: 07 | 01 | 05 | | Priority Year(s): 1988 | 1989 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 5/14228
A61M 5/142
| A61M 5/14244
A61M 5/16827
A61M 2205/12
Y10S 128/12
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142G6, A61M0005142, K61M0005168A11, K61M0005142P, K61M020512 | | Locarno Class: | | JP F Terms: 4C066: AA07; BB01; CC01; DD11; EE11; FF01; HH01; QQ23; QQ48; QQ52
| | JP FI Codes: | A61M000500-300 | A61M000514-481 | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
JP03412021B2
| 2003-06-03
| -
|
JP03485894B2
| 2004-01-13
| -
|
JP04459306B2
| 2010-04-28
| NOVO NORDISK AS
|
JP04885790B2
| 2012-02-29
| NOVO NORDISK AS
|
JP05465712B2
| 2014-04-09
| ACIST MEDICAL SYSTEMS INC
|
JP2007021237A
| 2007-02-01
| SARCOS INC
|
JP2007244891A
| 2007-09-27
| NOVO NORDISK AS
|
JP2012091012A
| 2012-05-17
| ACIST MEDICAL SYS INC
|
| | Count of Citing Patents: 8 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: JA | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
JP4082564A
| 19920316
| BROWN ERIC W
| AI FUROO CORP
|
| Title: INJECTION PUMP DEVICE |
| |
EP354324A2
| 19900214
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
EP354324A3
| 19901003
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Cartridge-type programmable ambulatory infusion pump |
| |
US4950245A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple fluid cartridge and pump |
| |
US5011378A
| 19910430
| Brown Eric W.
| I FLOW CORP
|
| Title: Pump tube mount and cartridge for infusion pump |
| |
US5131816A
| 19920721
| Brown Eric W.
| I FLOW CORP
|
| Title: Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP4082564A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP4082564A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 23/43 | | EP340427A3 | CATHETER CONNECTOR AND CLAMP | Raccord pour cathéter et clamp | Katheter-Verbindungsstück und-Klemme | | Publication Number: EP340427A3 | | Title: CATHETER CONNECTOR AND CLAMP | Raccord pour cathéter et clamp | Katheter-Verbindungsstück und-Klemme | | Title (Original): Catheter connector and clamp | Raccord pour cathéter et clamp | Katheter-Verbindungsstück und-Klemme | | Title (English): Catheter connector and clamp | | Title (French): Raccord pour cathéter et clamp | | Title (German): Katheter-Verbindungsstück und-Klemme | | Title (Spanish): | | Title - DWPI: | Abstract:
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | Abstract (English):
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee/Applicant First: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee - Standardized: I-FLOW CORPORATION | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Irvine California 92714,US,00719122 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor - w/address: Brown Eric W.,Newport Beach Calif. 92660,US | Kienholz Charles,San Dimas California 91773,US | Robinson Earl F.,El Toro California 92630,US | Bare Rex O.,Irvine California 92714,US | | Inventor Count: 4 | | Attorney/Agent: von Bezold, Dieter, Dr. | | Attorney/Agent - w/Address: von Bezold Dieter Dr.|Dr. Dieter von Bezold Dipl. Ing. Peter Schütz Dipl. Ing. Wolfgang Heusler Brienner Strasse 52, 80333 München, DE|00012341 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A3 | | Publication Date: 1990-09-19 | | Publication Month: 09 | | Publication Year: 1990 | | Application Number: EP1989104436A | | Application Country: EP | | Application Date: 1989-03-13 | | Application Month: 03 | | Application Year: 1989 | | Application with US Provisional: EP1989104436A | 1989-03-13 | | Priority Number: US1988178673A | | Priority Country: US | | Priority Date: 1988-04-07 | | Priority Date - Earliest: 1988-04-07 | | Priority Month: 04 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M003900, A61M003910, A61M003928, F16L003756 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M003900
| A
| A61
| A61M
| A61M0039
| A61M003900
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
A61M003928
| A
| A61
| A61M
| A61M0039
| A61M003928
|
F16L003756
| F
| F16
| F16L
| F16L0037
| F16L003756
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| F16L 37/56
A61M 39/10
A61M 39/284
| A61M 2039/1027
A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003910, A61M003928C, F16L003756, K61M003910F, K61M003910W | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
FR2492261A1
| 1982-04-23
| -
| TERSTEEGEN BERND
| Y
| 0 (Examiner)
|
| Title: RACCORD POUR L'ETABLISSEMENT DE LIAISONS DANS DES SYSTEMES DE TUYAUTERIE UTILISES EN MEDECINE |
| |
EP150666A1
| 1985-08-07
| Pfister Lehmann Alfred
| PFISTER LEHMANN ALFRED
| Y
| 0 (Examiner)
|
| Title: Closure at a ureteral catheter |
| |
DE1145247B
| 1963-03-14
| TUCHEL ULRICH
| ULRICH TUCHEL
| A
| 0 (Examiner)
|
| Title: Abdeckbare Kupplungsarmatur mit mechanischer Sicherung |
| |
US4581012A
| 1986-04-08
| Brown Eric W.
| I FLOW CORP
| YD
| 0 (Examiner)
|
| Title: Multilumencatheter set |
| |
DE808134C1
| 1951-07-12
| BENZOW BRUNO
| BRUNO BENZOW
| A
| 0 (Examiner)
|
| Title: Steckkontakt fuer elektrische Lampen, Geraete, Apparate und Maschinen |
| |
EP157224A2
| 1985-10-09
| Rycyk Manfred
| INTERMEDICAT GMBH
| A
| 0 (Examiner)
|
| Title: Connection device |
| |
| | Count of Cited Refs - Patent: 6 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1991-11-27
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-03-20 |
| |
1990-09-19
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0340427 A3 DE; FR; GB; IT; SE |
| |
1989-11-08
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0340427 A2 DE; FR; GB; IT; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R DE;FR;GB;IT;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: PS-AMEND 1991-11-27 1991 Patent Amended | RJ-DWDRAW 1991-03-20 1991 Deemed to be withdrawn | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP340427A3
| 19900919
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Catheter connector and clamp |
| |
EP340427A2
| 19891108
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
JP2029270A
| 19900131
| BROWN ERIC W
| I FLOW CORP
|
| Title: CONNECTOR FOR CATHETER |
| |
US4950255A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP340427A3&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP340427A3&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 24/43 | | EP340427A2 | Catheter connector and clamp. | Katheter-Verbindungsstück und -Klemme. | Raccord pour cathéter et clamp. | Catheter connector and clamp | Katheter-Verbindungsstueck und -Klemme | Raccord pour catheter et clamp | | Publication Number: EP340427A2 | | Title: Catheter connector and clamp. | Katheter-Verbindungsstück und -Klemme. | Raccord pour cathéter et clamp. | Catheter connector and clamp | Katheter-Verbindungsstueck und -Klemme | Raccord pour catheter et clamp | | Title (Original): Katheter-Verbindungsstück und -Klemme. | Catheter connector and clamp | Katheter-Verbindungsstueck und -Klemme | Raccord pour catheter et clamp | | Title (English): Catheter connector and clamp | | Title (French): Raccord pour catheter et clamp | | Title (German): Katheter-Verbindungsstueck und -Klemme | | Title (Spanish): | | Title - DWPI: Catheter connector and clamp has interlocking hook and post joining two parts together with manifold separating lumens of catheter | Abstract:
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | Abstract (English):
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A combination catheter connector and clamp provided with an interlocking hook (26) and post (14) for locking two connector parts together. A manifold (40) separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp (12). A silicone block (36) is used between the engagement portions of the connector parts. | | Abstract (Spanish): | Claims:
1. A multilumen connector part comprising: a housing having a plurality of engagement ports at one end and means for receiving a multilumen catheter at an other end; conduit means within said housing for providing fluid communication between the lumens in said multilumen catheter and said plurality of engagement ports; and clamping means attached to said housing for selectively closing off said conduit means.
2. The multilumen connector part of claim 1 wherein said conduit means is formed by a compressible and resilient material.
3. The multilumen connector part of claim 1 wherein said clamping means comprises a pushbutton having flow restrictor members which close off said conduit means when said pushbutton is held in a closed position.
4. The multilumen connector part of claim 3 wherein said pushbutton further includes guide members for riding up and down in slots formed in said housing.
5. The multilumen connector part of claim 3 wherein said pushbutton further includes a ledge engaging said housing to hold said pushbutton against said housing when said pushbutton is in a closed position.
6. The multilumen connector part of claim 1 further comprising post means extending from said housing so as to be available for making locking engagement with a second multilumen connector part.
7. The multilumen connector part of claim 1 further comprising a resilient sealing block secured within said housing for forming the engagement ports.
8. A catheter connector comprising: a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter; post means extending out from one of said first or second lock adapters; and hook means attached to the other of said first or second lock adapters to that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
9. The catheter connector of claim 8 further comprising clamp means attached to said first lock adapter for selectively closing each said conduit in said first lock adapter.
10. The catheter connector of claim 9 wherein said clamp means comprises a pushbutton attached to said housing and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
11. The catheter connector of claim 11 wherein said pushbutton further includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
12. The catheter connector of claim 8 wherein said hook means comprises a member having a hook at one end and a rotatable attachment at an other end.
13. The catheter connector of claim 8 wherein said second lock adapter further includes a penetrable self-sealing septum covering each conduit in said second lock adapter.
14. The catheter connector of claim 13 further comprising a needle holder having a needle for each conduit in said second lock adapter, each needle being insertable through said septum so as to be put in communication with a conduit in said second lock adapter.
15. The catheter connector of claim 8 further comprising a resilient sealing block for connecting the engagement portion of said second lock adapter to the engagement ports of said first lock adapter.
16. A catheter connector part comprising: a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a pushbutton attached to said housing; and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
17. The catheter connector part of claim 16 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position.
18. The catheter connector part of claim 16 wherein said pushbutton included guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
19. The catheter connector part of claim 16 further comprising post means extending from said housing so as to be available for making locking engagement with a second catheter connector part.
20. The catheter connector part of claim 16 further comprising hook means for making locking engagement with a second multilumen connector part.
21. The catheter connector part of claim 20 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
22. The catheter connector part of claim 16 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
23. A multilumen connector part comprising: a housing having plurality of conduits each having an engagement port and an opposite port; a penetrable self sealing septum covering the opposite ports of said conduits; and a multiple needle holder having a plurality of connection ports each connectable to a lumen of a catheter and a plurality of needles each in fluid communication with one of said connection ports, said needles being aligned so that when they are inserted through said septum each needle is brought into communication with one of said conduits in said housing.
24. The multilumen connector part of claim 23 further comprising hook means for making locking engagement with a second multilumen connector part.
25. The multilumen connector part of claim 23 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
26. The multilumen connector part of claim 23 wherein said needles are aligned parallel to one another in a single plane. | | Claims Count: 26 | Claims (English):
1. A multilumen connector part comprising: a housing having a plurality of engagement ports at one end and means for receiving a multilumen catheter at an other end; conduit means within said housing for providing fluid communication between the lumens in said multilumen catheter and said plurality of engagement ports; and clamping means attached to said housing for selectively closing off said conduit means.
2. The multilumen connector part of claim 1 wherein said conduit means is formed by a compressible and resilient material.
3. The multilumen connector part of claim 1 wherein said clamping means comprises a pushbutton having flow restrictor members which close off said conduit means when said pushbutton is held in a closed position.
4. The multilumen connector part of claim 3 wherein said pushbutton further includes guide members for riding up and down in slots formed in said housing.
5. The multilumen connector part of claim 3 wherein said pushbutton further includes a ledge engaging said housing to hold said pushbutton against said housing when said pushbutton is in a closed position.
6. The multilumen connector part of claim 1 further comprising post means extending from said housing so as to be available for making locking engagement with a second multilumen connector part.
7. The multilumen connector part of claim 1 further comprising a resilient sealing block secured within said housing for forming the engagement ports.
8. A catheter connector comprising: a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter; post means extending out from one of said first or second lock adapters; and hook means attached to the other of said first or second lock adapters to that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
9. The catheter connector of claim 8 further comprising clamp means attached to said first lock adapter for selectively closing each said conduit in said first lock adapter.
10. The catheter connector of claim 9 wherein said clamp means comprises a pushbutton attached to said housing and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
11. The catheter connector of claim 11 wherein said pushbutton further includes guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
12. The catheter connector of claim 8 wherein said hook means comprises a member having a hook at one end and a rotatable attachment at an other end.
13. The catheter connector of claim 8 wherein said second lock adapter further includes a penetrable self-sealing septum covering each conduit in said second lock adapter.
14. The catheter connector of claim 13 further comprising a needle holder having a needle for each conduit in said second lock adapter, each needle being insertable through said septum so as to be put in communication with a conduit in said second lock adapter.
15. The catheter connector of claim 8 further comprising a resilient sealing block for connecting the engagement portion of said second lock adapter to the engagement ports of said first lock adapter.
16. A catheter connector part comprising: a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a pushbutton attached to said housing; and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
17. The catheter connector part of claim 16 wherein said pushbutton further includes a ledge for engaging said housing to hold said pushbutton in the closed position.
18. The catheter connector part of claim 16 wherein said pushbutton included guide members which fit through slots formed in said housing, said guide members having expanded portions at their ends for preventing said guide members from coming out of the slots thereby maintaining said pushbutton attached to said housing.
19. The catheter connector part of claim 16 further comprising post means extending from said housing so as to be available for making locking engagement with a second catheter connector part.
20. The catheter connector part of claim 16 further comprising hook means for making locking engagement with a second multilumen connector part.
21. The catheter connector part of claim 20 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
22. The catheter connector part of claim 16 further comprising a resilient sealing block for connecting the engagement ports of said housing with the engagement portion of a second catheter connector port.
23. A multilumen connector part comprising: a housing having plurality of conduits each having an engagement port and an opposite port; a penetrable self sealing septum covering the opposite ports of said conduits; and a multiple needle holder having a plurality of connection ports each connectable to a lumen of a catheter and a plurality of needles each in fluid communication with one of said connection ports, said needles being aligned so that when they are inserted through said septum each needle is brought into communication with one of said conduits in said housing.
24. The multilumen connector part of claim 23 further comprising hook means for making locking engagement with a second multilumen connector part.
25. The multilumen connector part of claim 23 wherein said hook means comprises a member having a hook at one end and being rotatably attached to said housing at an other end.
26. The multilumen connector part of claim 23 wherein said needles are aligned parallel to one another in a single plane. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A multilumen connector part comprising: a housing having a plurality of engagement ports at one end and means for receiving a multilumen catheter at an other end; conduit means within said housing for providing fluid communication between the lumens in said multilumen catheter and said plurality of engagement ports; and clamping means attached to said housing for selectively closing off said conduit means. | Independent Claims:
1. A multilumen connector part comprising: a housing having a plurality of engagement ports at one end and means for receiving a multilumen catheter at an other end; conduit means within said housing for providing fluid communication between the lumens in said multilumen catheter and said plurality of engagement ports; and clamping means attached to said housing for selectively closing off said conduit means.
8. A catheter connector comprising: a first lock adapter including means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a second lock adapter having an engagement portion connectable to said first lock adapter so that each said conduit in said first lock adapter interconnects with a conduit in said second lock adapter; post means extending out from one of said first or second lock adapters; and hook means attached to the other of said first or second lock adapters to that said first lock adapter is locked to said second lock adapter when said hook means engages said post means.
16. A catheter connector part comprising: a housing having means for receiving a catheter having at least one lumen, an engagement port for each lumen and a conduit for each port connecting said port to one of said at least one lumen; a pushbutton attached to said housing; and flow restrictor members extending from said pushbutton for closing off said conduits when said pushbutton is in a closed position.
23. A multilumen connector part comprising: a housing having plurality of conduits each having an engagement port and an opposite port; a penetrable self sealing septum covering the opposite ports of said conduits; and a multiple needle holder having a plurality of connection ports each connectable to a lumen of a catheter and a plurality of needles each in fluid communication with one of said connection ports, said needles being aligned so that when they are inserted through said septum each needle is brought into communication with one of said conduits in said housing. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a combination catheter connector and clamp, in particular, one for use with multilumen catheters.
It has been found convenient for patients who are receiving frequent infusions to provide them with a tunneled subcutaneous catheter. Such a catheter is inserted underneath the skin of the patient and then into a vein. A tissue cuff is provided on the catheter near the skin so that the skin may grow into it and hold the catheter in place. A connector part is located on the end of the catheter above the skin into which a mating connector part may be attached to connect the subcutaneously tunneled catheter with an external catheter. The external catheter may be used for infusion of fluids or for extraction of body fluid for testing. A separate catheter clamp may be used in conjunction with such a catheter arrangement so as to permit closing off of the passageway through the catheter.
More recently, there has been an introduction of the use of multilumen catheters in subcutaneously tunneled catheter sets. For example, U.S. Patent No. 4,581,012 discloses a multilumen locking connector for use in a subcutaneously tunneled catheter set. Clamping of such a multilumen catheter is difficult especially if repeated clamping is desired. A multilumen catheter has walls on its interior separating the plurality of lumens. These interior walls make it difficult to completely clamp off a multilumen catheter and the walls are further subject to being crushed or deteriorated from repeated clamping. It is one object of the present invention to provide a clamp for use in a multilumen catheter set.
SUMMARY OF THE INVENTION
The present invention is directed to a catheter connector including a first lock adapter for mating with a second lock adapter. A post extends from one adapter and a hook is attached to the other adapter so that when the hook engages the post, the two adapters become locked together.
In accordance with a feature of the present invention, the connector may be provided with a clamp for closing off the conduits through one of the adapters. The clamp can be conveniently formed by a push button which rides in a couple of slots in one of the lock adapters. By providing a clamp in the connector, the present invention advantageously eliminates the need for separate clamps or a single clamp which may damage a multilumen catheter. Particularly advantageous is the use of the clamp in the multilumen embodiment of the present invention. The clamp is used to shut off the conduits within one of the lock adapters. In this manner, no stress is exerted upon the interior walls of a multilumen catheter.
A further advantage of the present invention is that it may be provided with a self-sealing septum which gives the implanted catheter a closed system having no exposure to the air. The septum is penetrated by a needle for providing communication between an external catheter and the implanted catheter.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
*
Fig. 1 is a plan view of the combination catheter connector and clamp of the present invention.
*
FIG. 2 is an elevational view of the combination catheter connector and clamp of FIG. 1.
*
FIG. 3 is a plan view in partial cross-section of the combination catheter connector and clamp of FIG. 1.
*
FIG. 4 is an elevational view in partial cross-section of the multilumen catheter connector and clamp of FIG. 1.
*
FIG. 5 is an exploded view of an alternate embodiment of the combination catheter connector and clamp of the present invention.
*
FIG. 6 is a cross-sectional view of the patient connector part of the present invention.
*
FIG. 7 is a cross-sectional view of the patient connector part of FIG. 6 with the clamp in the open position.
*
FIG. 8 is a cross-sectional view of the patient connector part of FIG. 6 with the clamp in the closed position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIGS. 1 and 2, the combination catheter connector and clamp is shown. A patient connector part 10 is lock adapter attached to a catheter 11 which has been implanted in a patient. A pushbutton clamp 12 is provided in the patient connecter part 10. The patient connector part 10 includes conduits providing communication with the lumen or lumens in the implanted catheter 11. The pushbutton clamp 12 is used to close off the conduit or conduits within the patient connector part 10 so as to close off the implanted catheter 11. The patient connector part 10 further includes a locking post 14 which is used when the patient connector part 10 is locked onto a lock adapter referred to herein as the drug connector part 20. The drug connector 20 is attached to an external catheter 21. The external catheter 21 could be used in connection with an infusion pump for infusing fluid into a patient through the implanted catheter.
The drug connector part 20 carries an interlock 22 which has a handle 24 and a hook 26. The interlock 22 is rotatably connected to the connector 20 about shafts 28. The interlock 22 is shown in solid lines in the locked position with the hook 26 engaging the locking posts 14 of the patient connector 10. The locking posts 14 may be made in the shape of a cross or other equivalent shape to form a ledge that positively engages the hook 26. In the locked position, the lumens of the implanted catheter 11 are in communication through the connector with the lumens of the external catheter 21. The connector can be unlocked by squeezing the connector parts together and pulling up on the handle 24 which causes the interlock 22 to swing about the axis formed by the shafts 28 thereby disengaging the hook 26 from the posts 14. The interlock 22 is drawn in dashed lines to show it in an unlocked position.
The patient connector 10 is described in more detail with reference to FIGS. 3 and 4. A plastic housing 30 includes an engagement portion 32 top and bottom manifold covers 34and a hinge portions 33 connecting the manifold covers to the agreement poriton 32. The engagement portion 32 provides solid conduit tubes 38 for each conduit provided by the connector. A connector is chosen for a catheter so that there is one conduit for each lumen in the catheter. In accordance with the preferred embodiment, a resilient sealing block 36 provides the engagement ports 35 for the patient connector part 10. The sealing block 36, preferably made from silicone, is solid except for a conduit for each of the conduits in the connector.The conduits fit over the solid conduit tubes 38 projecting from the engagement portion 32 of the housing 30. Rather than using the hard plastic conduit tubes as engagement ports, the silicone block is used since it is resilient and can therefore accomodate slight manufacturing variations in the formation of the plastic connector parts or deviations created by handling and use of the plastic connector parts. In this manner, it is easier to ensure that two connector parts can be mated.
On the inside of the housing 30, a manifold 40 is placed for providing fluid communication between the conduit tubes 38 and the lumens of the catheter connected to the connector. The extruded catheter tube is molded to the manifold 40 so that each lumen is separately directed through an independent conduit. Each conduit branches off into one of the plurality of arms 42 on the manifold 40. The manifold 40 and its arms 42 are made of a compressible and resilient material such as silicone so as to properly respond to the action of the clamp 12. Silicone is also preferable because of its known compatibility to various drugs and body tissues. Each arm 42 of the manifold 40 fits over the rear of a conduit tube 38 to provide a separate and distinct conduit for each lumen of the catheter from the junction between the catheter and the manifold 40 through to the engagement ports formed by the silicone block 36.
The top manifold cover 34 has a hole 47 through which the pushbutton clamp 12 fits. The bottom manifold cover 34 is provided with two slots 48 within which the pushbutton clamp 12 rides. Referring now to FIGS. 6-8, the pushbutton clamp 12 includes two guide members 50 which ride up and down in the slots 48. The guide members 50, each includes a restraint portion 52 at its end. The restraint portion is expanded with respect to the guide member in order to prevent the pushbutton 12 from coming out of the slots 48. The restraint portion may be formed in the mold for the push button clamp or alternatively the bottoms of the guide members can be heat staked to form the restraint portions after the molding process. The restraint portions 52 ride within a widened portion 49 of the slots. The restraint portions 52 hit up against a shoulder 54 where the widened portion 49 meets the narrow portion of the slots 48. This action as shown in FIGS. 6 and 7 keeps the clamp 12 secured onto the connector.
In manufacture of this connector, the top and bottom manifold covers 34 are swung open along the hinge portions 33. The manifold 40 molded to the patient catheter is attached to the rear of the conduit tubes 38. The top and bottom manifold covers 34 are then swung closed so as to envelope the manifold. The pushbutton clamp 12 is then inserted through the top manifold cover 34 into the slots 48. The restraint portions 52 of the clamp are forced through the narrow portion of the slots 48 until they snap into the widened portion 49. The silicone block 36 is then force fit onto the tubes 38.
The pushbutton clamp 12 further includes a flow restrictor member 56 for each of the arms 42 of the manifold. The flow restrictor members 56 are shorter than the guide members 50 so that when the button 12 is up as FIGS. 6 and 7 the flow restrictor members 56 do not cause any restriction in the flow of fluids through the arms 42 of the manifold. The flow restrictor members 56 of the preferred embodiment are provided with a clamping ledge 58 which is provided for sliding under a restraining wall portion 60 of the upper manifold cover 34. Thus to effect clamping, the pushbutton 12 is pushed down and forward into the position shown in FIG. 4 so that the clamping ledge 58 engages the wall portion 60. In this position, the flow restrictor members 56 are held down against the arms 42 of the manifold 40 so as to close off the conduits there within as shown in FIG. 8. While the back of the camp 12 may bow up off the connector housing, the parts are dimensioned to ensure complete closure of the conduits when the clamp is in the closed position.
The drug connector part 20 is now discussed in more detail. As in the patient connector part 10, the drug connector part 20 includes a silicone manifold 40 in this case molded to the external catheter 21. The manifold may be made of silicone or a medical-grade plastic, such as PVC. The arms of the silicone manifold 40 plug onto the interior projections of conduit tubes 62. The outer ends of conduit tubes 62 form the engagement ports for the drug connector part 20. These engagement ports fit into the conduits of the silicone block 36 carried by the patient connector part 10. Thus, the drug connector part provides a conduit for each of the lumens in the external catheter from the catheter through to the engagement ports at the outer ends of the conduit tubes 62. The resiliency of the silicone block 36 permits the engagement portion of the drug connector part 20 to fit over the block and the tube projections to fit into the conduits despite any minor manufacturing tolerances in the formation of the drug connector part. When the engagement ports of the connector parts are fully inserted into the silicone block, the interlock 22 can be brought down into place so that the hook 26 engages the post 14 of the patient connector. A slight compression of the silicone block occurs to ensure a good seal.
In accordance with an alternate embodiment of the present invention, rather than providing a drug connector part connected to a multilumen catheter, an injection connector part 70 may be used for interacting with a needle holder 78 as shown in FIG. 5. The needle holder 78 may be provided with single lumen lines 74 connected to injection ports 75 permitting the use of a syringe to repeatedly inject a drug solution through an injection port and into any one of the lumens of the patient catheter. The injection connector part 70 has a housing which surround conduit tubes 62. The conduit tubes 62 form the engagement ports at their outer ends as in the drug connecter part. A silicone self-sealing septum 76 is provided for insertion into the rear of the housing 70 so that the rear of the conduit tubes 62 fit into matching holes in the septum 76. An interlock 22, not shown, is rotatably attached to the connector part housing at shafts 28. Thus, the injection connector part may be plugged into the patient connector part and locked thereto by the interlock 22. This will provide a closed system for the patient. The self-sealing septum 76 will prevent air from entering the conduits which lead into the patient's multilumen catheter.
The needle holder 78 is provided with needles 80 aligned for insertion through the septum 76 and into the conduit tubes 62. When the septum 76 is penetrated by the needles, the needles extend through the septum to provide communication between the conduit tubes 62 and the single lumen lines 74 at the rear of the needles 80. Each needle 80 has a single lumen line 74 in communication therewith. The single lumen lines 74 are attached to the rear of the needle holder 78. At the other end of each catheter is a luer connector 82 which is provided with its own self-sealing septum 84. The septum 84 and luer conectors 82 form the injection ports 75. Injections may be made by a syringe needle through the self-sealing septum 84 of one of the single lumen lines connected at the rear of the needle holder 78. This permits selective injection of fluids into the individual lumens of an implanted multilumen catheter.
Of course, it should be understood that various changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. For example, a spring biased clamp may be used to replace the pushbutton clamp on the patient connector part. This and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I-Flow Corporation,US,00719122 | | Assignee/Applicant First: I-Flow Corporation,US,00719122 | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I-Flow Corporation | | Assignee - Original w/address: I-Flow Corporation,US,00719122 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Kienholz, Charles | Robinson, Earl F. | Bare, Rex O. | | Inventor - w/address: Brown Eric W.,US | Kienholz Charles,US | Robinson Earl F.,US | Bare Rex O.,US | | Inventor Count: 4 | | Attorney/Agent: von Bezold, Dieter, Dr. et al | | Attorney/Agent - w/Address: von Bezold Dieter Dr. et al|Dr. Dieter von Bezold Dipl.-Ing. Peter Schuetz Dipl.-Ing. Wolfgang Heusler Brienner Strasse 52, D-8000 Muenchen 2, DE|00012342 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A2 | | Publication Date: 1989-11-08 | | Publication Month: 11 | | Publication Year: 1989 | | Application Number: EP1989104436A | | Application Country: EP | | Application Date: 1989-03-13 | | Application Month: 03 | | Application Year: 1989 | | Application with US Provisional: EP1989104436A | 1989-03-13 | | Priority Number: US1988178673A | | Priority Country: US | | Priority Date: 1988-04-07 | | Priority Date - Earliest: 1988-04-07 | | Priority Month: 04 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M003900, A61M003910, A61M003928, F16L003756 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M003900
| A
| A61
| A61M
| A61M0039
| A61M003900
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
A61M003928
| A
| A61
| A61M
| A61M0039
| A61M003928
|
F16L003756
| F
| F16
| F16L
| F16L0037
| F16L003756
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| F16L 37/56
A61M 39/10
A61M 39/284
| A61M 2039/1027
A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003910, A61M003928C, F16L003756, K61M003910F, K61M003910W | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
DE808134C1
| 1951-07-12
| BENZOW BRUNO
| BRUNO BENZOW
| A
| 0 (Examiner)
|
| Title: Steckkontakt fuer elektrische Lampen, Geraete, Apparate und Maschinen |
| |
EP157224A2
| 1985-10-09
| Rycyk Manfred
| INTERMEDICAT GMBH
| A
| 0 (Examiner)
|
| Title: Connection device |
| |
US4581012A
| 1986-04-08
| Brown Eric W.
| I FLOW CORP
| YD
| 0 (Examiner)
|
| Title: Multilumencatheter set |
| |
EP150666A1
| 1985-08-07
| Pfister Lehmann Alfred
| PFISTER LEHMANN ALFRED
| Y
| 0 (Examiner)
|
| Title: Closure at a ureteral catheter |
| |
DE1145247B
| 1963-03-14
| TUCHEL ULRICH
| ULRICH TUCHEL
| A
| 0 (Examiner)
|
| Title: Abdeckbare Kupplungsarmatur mit mechanischer Sicherung |
| |
FR2492261A1
| 1982-04-23
| -
| TERSTEEGEN BERND
| Y
| 0 (Examiner)
|
| Title: RACCORD POUR L'ETABLISSEMENT DE LIAISONS DANS DES SYSTEMES DE TUYAUTERIE UTILISES EN MEDECINE |
| |
| | Count of Cited Refs - Patent: 6 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
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AU199176338A
| 1991-11-07
| CRITIKON INC
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AU2009319887B2
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| ACIST MEDICAL SYS INC
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AU639779B
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| CRITIKON INC
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CN101400401B
| 2012-11-07
| RENISHAW PLC
|
DE202012007845U1
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| BRAUN MELSUNGEN AG
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EP1104521A1
| 2001-06-06
| ACI MEDICAL
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EP1104521B1
| 2006-12-27
| ACI MEDICAL
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EP2012866B1
| 2010-03-03
| RENISHAW IRELAND LTD
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| 2012-08-22
| SMITH & NEPHEW
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| 2014-06-04
| ACIST MEDICAL SYS INC
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EP455478A1
| 1991-11-06
| CRITIKON INC
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EP455478B1
| 1997-07-23
| CRITIKON INC
|
EP534000A2
| 1993-03-31
| NICOLETTI PIO
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EP724464B1
| 1998-12-09
| BAXTER INT
|
KR1289607B1
| 2013-07-24
| ACIST MEDICAL SYSTEMS INC.
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RU2482887C2
| 2013-05-27
| ACIST MEDICAL SYS INC
|
US5279588A
| 1994-01-18
| NICOLETTI PIO
|
US7984929B2
| 2011-07-26
| RENISHAW PLC
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US8080001B2
| 2011-12-20
| BORLAUG TOM
|
US8740877B2
| 2014-06-03
| BORLAUG TOM
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US8915903B2
| 2014-12-23
| SMUTNEY CHAD C
|
WO1996005882A1
| 1996-02-29
| BAXTER INT
|
WO2004016312A1
| 2004-02-26
| BAXTER INT
|
WO2004071675A1
| 2004-08-26
| KURTZ ALTAUSSEE GMBH
|
WO2007104961A1
| 2007-09-20
| RENISHAW PLC
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WO2009081196A1
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| SMITH & NEPHEW
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WO2010062841A1
| 2010-06-03
| ACIST MEDICAL SYS INC
|
| | Count of Citing Patents: 28 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1991-11-27
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-03-20 |
| |
1990-09-19
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0340427 A3 DE; FR; GB; IT; SE |
| |
1989-11-08
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0340427 A2 DE; FR; GB; IT; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R DE;FR;GB;IT;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP340427A2
| 19891108
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
EP340427A3
| 19900919
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Catheter connector and clamp |
| |
JP2029270A
| 19900131
| BROWN ERIC W
| I FLOW CORP
|
| Title: CONNECTOR FOR CATHETER |
| |
US4950255A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP340427A2&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP340427A2&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 25/43 | | JP2029270A | CONNECTOR FOR CATHETER | | Publication Number: JP2029270A | | Title: CONNECTOR FOR CATHETER | | Title (Original): CONNECTOR FOR CATHETER | | Title (English): CONNECTOR FOR CATHETER | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: | Abstract:
PURPOSE: To dispense with the use of a separate clamp or a single clamp to connect a multi-lumen catheter which might damage the catheter by attaching a clamp to a connector of the catheter.
CONSTITUTION: A connector part 10 on the patient side is a lock adaptor attached to a catheter 11 inserted to the patient's body. A push-button clamp 12 is attached at the connector part 10 on the patient side, and the connector part 10 on the patient side has a plural number of conduits connecting to one or plural lumens inside the inserted catheter 11. The push-button clamp 12 is used to close the conduits inside the connector part 10 on the patient side so that the inserted catheter 11 will be closed. The connector part 10 on the patient side also has engagement posts 14 to be used when the connector part 10 is engaged with a lock adaptor which is called a connector part 20 on the medicine side in this case. The connector part 20 on the medicine side is attached to an outside catheter 21.
COPYRIGHT: (C)1990,JPO&Japio
PURPOSE: To dispense with the use of a separate clamp or a single clamp to connect a multi-lumen catheter which might damage the catheter by attaching a clamp to a connector of the catheter. CONSTITUTION: A connector part 10 on the patient side is a lock adaptor attached to a catheter 11 inserted to the patient's body. A push-button clamp 12 is attached at the connector part 10 on the patient side, and the connector part 10 on the patient side has a plural number of conduits connecting to one or plural lumens inside the inserted catheter 11. The push-button clamp 12 is used to close the conduits inside the connector part 10 on the patient side so that the inserted catheter 11 will be closed. The connector part 10 on the patient side also has engagement posts 14 to be used when the connector part 10 is engaged with a lock adaptor which is called a connector part 20 on the medicine side in this case. The connector part 20 on the medicine side is attached to an outside catheter 21. | Abstract (English):
PURPOSE: To dispense with the use of a separate clamp or a single clamp to connect a multi-lumen catheter which might damage the catheter by attaching a clamp to a connector of the catheter.
CONSTITUTION: A connector part 10 on the patient side is a lock adaptor attached to a catheter 11 inserted to the patient's body. A push-button clamp 12 is attached at the connector part 10 on the patient side, and the connector part 10 on the patient side has a plural number of conduits connecting to one or plural lumens inside the inserted catheter 11. The push-button clamp 12 is used to close the conduits inside the connector part 10 on the patient side so that the inserted catheter 11 will be closed. The connector part 10 on the patient side also has engagement posts 14 to be used when the connector part 10 is engaged with a lock adaptor which is called a connector part 20 on the medicine side in this case. The connector part 20 on the medicine side is attached to an outside catheter 21.
COPYRIGHT: (C)1990,JPO&Japio | | Abstract (French): | | Abstract (German): | Abstract (Original):
PURPOSE: To dispense with the use of a separate clamp or a single clamp to connect a multi-lumen catheter which might damage the catheter by attaching a clamp to a connector of the catheter.
CONSTITUTION: A connector part 10 on the patient side is a lock adaptor attached to a catheter 11 inserted to the patient's body. A push-button clamp 12 is attached at the connector part 10 on the patient side, and the connector part 10 on the patient side has a plural number of conduits connecting to one or plural lumens inside the inserted catheter 11. The push-button clamp 12 is used to close the conduits inside the connector part 10 on the patient side so that the inserted catheter 11 will be closed. The connector part 10 on the patient side also has engagement posts 14 to be used when the connector part 10 is engaged with a lock adaptor which is called a connector part 20 on the medicine side in this case. The connector part 20 on the medicine side is attached to an outside catheter 21.
COPYRIGHT: (C)1990,JPO&Japio | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I FLOW CORP | | Assignee/Applicant First: I FLOW CORP | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I FLOW CORP | | Assignee - Original w/address: I FLOW CORP | | Assignee Count: 1 | | Inventor: BROWN ERIC W | KIENHOLZ CHARLES | ROBINSON EARL F | BARE REX O | | Inventor First: BROWN ERIC W | | Inventor - Original: BROWN ERIC W | KIENHOLZ CHARLES | ROBINSON EARL F | BARE REX O | | Inventor - w/address: BROWN ERIC W | KIENHOLZ CHARLES | ROBINSON EARL F | BARE REX O | | Inventor Count: 4 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: JP | | Publication Kind Code: A | | Publication Date: 1990-01-31 | | Publication Month: 01 | | Publication Year: 1990 | | Application Number: JP198987133A | | Application Country: JP | | Application Date: 1989-04-07 | | Application Month: 04 | | Application Year: 1989 | | Application with US Provisional: JP198987133A | 1989-04-07 | | Priority Number: US1988178673A | | Priority Country: US | | Priority Date: 1988-04-07 | | Priority Date - Earliest: 1988-04-07 | | Priority Month: 04 | | Priority Year(s): 1988 | | Earliest Priority Year: 1988 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M003900, A61M003910, A61M003928, F16L003756 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M003900
| A
| A61
| A61M
| A61M0039
| A61M003900
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
A61M003928
| A
| A61
| A61M
| A61M0039
| A61M003928
|
F16L003756
| F
| F16
| F16L
| F16L0037
| F16L003756
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| F16L 37/56
A61M 39/10
A61M 39/284
| A61M 2039/1027
A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003910, A61M003928C, F16L003756, K61M003910F, K61M003910W | | Locarno Class: | | JP F Terms: 4C067: AA01
4C167: AA31; BB09; BB19; BB33; CC08; GG02; GG36; GG42; HH20
| | JP FI Codes: | A61M002500-320D | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
JP03140266B2
| 2001-03-05
| TOKYO ELECTRIC CO LTD
|
JP05367089B2
| 2013-12-11
| ACIST MEDICAL SYSTEMS INC
|
JP2012509745A
| 2012-04-26
| -
|
JP5056917B2
| 1993-08-20
| BECTON DICKINSON CO
|
US5318244A
| 1994-06-07
| SHIMANO KK
|
| | Count of Citing Patents: 5 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: JA | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
JP2029270A
| 19900131
| BROWN ERIC W
| I FLOW CORP
|
| Title: CONNECTOR FOR CATHETER |
| |
EP340427A2
| 19891108
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
EP340427A3
| 19900919
| Brown Eric W.
| I-FLOW CORPORATION
|
| Title: Catheter connector and clamp |
| |
US4950255A
| 19900821
| Brown Eric W.
| I FLOW CORP
|
| Title: Catheter connector and clamp |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP2029270A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP2029270A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 26/43 | | US4666430A | Infusion pump | | Publication Number: US4666430A | | Title: Infusion pump | | Title (Original): Infusion pump | | Title (English): Infusion pump | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Intravascular infusion pump operates syringe plunger using pressurised gas canister and pressure reducer | Abstract:
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | Abstract (English):
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | | Abstract (French): | | Abstract (German): | Abstract (Original):
An infusion pump is disclosed in which a canister of compressed gas is regulated to provide a continuous source of pressure to one or more compressible fluid sources. Valves on the outlets of the sources prevent fluid from escaping except when the valves are opened. The valves are opened by solenoids which are selectively activated to open the valves. | | Abstract (Spanish): | Claims:
We claim:
1. An intravascular infusion pump comprising:
*
a source of pressurized gas;
*
a pressure regulator coupled to said gas source for providing gas at a lower pressure than that of the gas from said gas source;
*
a syringe having a barrel with an open end and a syringe tip at another end, said syringe barrel containing a fluid solution and having a slidable member which pushes the fluid solution out of the syringe through the tip when pressure is applied to the slidable member;
*
means for directing said pressurized gas from said pressure regulator to the open end of said syringe so that said gas exerts pressure directly on said slidable member to force fluid out through the tip of said syringe; and
*
a valve coupled to the tip of said syringe, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said springs means to open fluid flow through said valve; and flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open.
2. The intravascular infusion pump of claim 1, wherein said source of pressurized gas comprises a canister of compressed gas.
3. The intravascular infusion pump of claim 1 further comprising electromechanical means connected to said moving means of said valve for operating said moving means and control means coupled to said electromechanical means for selectively activating said electromechanical means.
4. The intravascular infusion pump of claim 1 wherein said means for directing said pressurized gas comprises a gasket for sealing the open end of said syringe and a conduit to provide a passage from said pressure regulator into the open end of said syringe.
5. The intravascular infusion pump of claim 1 wherein said means for moving said sealing member comprises a plunger stem connected to said sealing member at one end and having an other end extending out through said housing.
6. A multiple fluid infusion pump comprising:
*
a source of continuous pressure;
*
a plurality of compressible fluid sources each having an opening out through which fluid may flow;
*
means for directing pressure from said pressure source to said plurality of compressible fluid sources so as to continuously subject each fluid source to continuous pressure which urges fluid through the openings of said fluid sources;
*
a valve coupled to the opening in each of said plurality of fluid sources for controlling the flow of fluid from said source by preventing fluid flow when closed and allowing fluid flow when open, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said spring means to open fluid flow through said valve; and
*
flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open;
*
a multilumen adapter for receiving the fluid flow from each of said fluid sources through their respective valves and for separately feeding each fluid into one of a plurality of lumens in a multilumen catheter;
*
electromechanical means connected to each of said valves for opening and closing its respective valves; and
*
control means coupled to each of said electromechanical means for selectively activating said electromechanical means.
7. The multiple fluid infusion pump of claim 6 wherein said means for moving said sealing member comprises a plunger stem connected to said sealing member at one end and having an other end extending out through said housing so as to be connected to said electromechanical means. | | Claims Count: 7 | Claims (English):
We claim:
1. An intravascular infusion pump comprising:
*
a source of pressurized gas;
*
a pressure regulator coupled to said gas source for providing gas at a lower pressure than that of the gas from said gas source;
*
a syringe having a barrel with an open end and a syringe tip at another end, said syringe barrel containing a fluid solution and having a slidable member which pushes the fluid solution out of the syringe through the tip when pressure is applied to the slidable member;
*
means for directing said pressurized gas from said pressure regulator to the open end of said syringe so that said gas exerts pressure directly on said slidable member to force fluid out through the tip of said syringe; and
*
a valve coupled to the tip of said syringe, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said springs means to open fluid flow through said valve; and flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open.
2. The intravascular infusion pump of claim 1, wherein said source of pressurized gas comprises a canister of compressed gas.
3. The intravascular infusion pump of claim 1 further comprising electromechanical means connected to said moving means of said valve for operating said moving means and control means coupled to said electromechanical means for selectively activating said electromechanical means.
4. The intravascular infusion pump of claim 1 wherein said means for directing said pressurized gas comprises a gasket for sealing the open end of said syringe and a conduit to provide a passage from said pressure regulator into the open end of said syringe.
5. The intravascular infusion pump of claim 1 wherein said means for moving said sealing member comprises a plunger stem connected to said sealing member at one end and having an other end extending out through said housing.
6. A multiple fluid infusion pump comprising:
*
a source of continuous pressure;
*
a plurality of compressible fluid sources each having an opening out through which fluid may flow;
*
means for directing pressure from said pressure source to said plurality of compressible fluid sources so as to continuously subject each fluid source to continuous pressure which urges fluid through the openings of said fluid sources;
*
a valve coupled to the opening in each of said plurality of fluid sources for controlling the flow of fluid from said source by preventing fluid flow when closed and allowing fluid flow when open, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said spring means to open fluid flow through said valve; and
*
flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open;
*
a multilumen adapter for receiving the fluid flow from each of said fluid sources through their respective valves and for separately feeding each fluid into one of a plurality of lumens in a multilumen catheter;
*
electromechanical means connected to each of said valves for opening and closing its respective valves; and
*
control means coupled to each of said electromechanical means for selectively activating said electromechanical means.
7. The multiple fluid infusion pump of claim 6 wherein said means for moving said sealing member comprises a plunger stem connected to said sealing member at one end and having an other end extending out through said housing so as to be connected to said electromechanical means. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. An intravascular infusion pump comprising:
*
a source of pressurized gas;
*
a pressure regulator coupled to said gas source for providing gas at a lower pressure than that of the gas from said gas source;
*
a syringe having a barrel with an open end and a syringe tip at another end, said syringe barrel containing a fluid solution and having a slidable member which pushes the fluid solution out of the syringe through the tip when pressure is applied to the slidable member;
*
means for directing said pressurized gas from said pressure regulator to the open end of said syringe so that said gas exerts pressure directly on said slidable member to force fluid out through the tip of said syringe; and
*
a valve coupled to the tip of said syringe, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said springs means to open fluid flow through said valve; and flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open. | Independent Claims:
1. An intravascular infusion pump comprising:
*
a source of pressurized gas;
*
a pressure regulator coupled to said gas source for providing gas at a lower pressure than that of the gas from said gas source;
*
a syringe having a barrel with an open end and a syringe tip at another end, said syringe barrel containing a fluid solution and having a slidable member which pushes the fluid solution out of the syringe through the tip when pressure is applied to the slidable member;
*
means for directing said pressurized gas from said pressure regulator to the open end of said syringe so that said gas exerts pressure directly on said slidable member to force fluid out through the tip of said syringe; and
*
a valve coupled to the tip of said syringe, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said springs means to open fluid flow through said valve; and flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open.
6. A multiple fluid infusion pump comprising:
*
a source of continuous pressure;
*
a plurality of compressible fluid sources each having an opening out through which fluid may flow;
*
means for directing pressure from said pressure source to said plurality of compressible fluid sources so as to continuously subject each fluid source to continuous pressure which urges fluid through the openings of said fluid sources;
*
a valve coupled to the opening in each of said plurality of fluid sources for controlling the flow of fluid from said source by preventing fluid flow when closed and allowing fluid flow when open, said valve including:
*
a housing having a passageway for fluid flow;
*
a sealing member slidably mounted within said passageway;
*
spring means for pushing said sealing member within said passageway to close off fluid flow through said valve;
*
means for moving said sealing member against the action of said spring means to open fluid flow through said valve; and
*
flow restrictor means within said passageway to accurately limit the flow of fluid through said valve when said valve is open;
*
a multilumen adapter for receiving the fluid flow from each of said fluid sources through their respective valves and for separately feeding each fluid into one of a plurality of lumens in a multilumen catheter;
*
electromechanical means connected to each of said valves for opening and closing its respective valves; and
*
control means coupled to each of said electromechanical means for selectively activating said electromechanical means. | Description:
BACKGROUND OF THE INVENTION
This invention relates to infusion pumps. There are many applications for which there is a need for a device which can intravenously administer a plurality of drug solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often if different drug solutions are used, they are administered by using a separate catheter tube for each drug. A separate infusion pump would be used on each individual catheter tube line and the tube would deliver the fluid solution into the patient through its respective intravascular access needle. A patient must pay for each catheter set and must rent a pump for use with the catheter tube. Therefore, it is costly to use multiple catheter tubes and pumps.
Some physicians administer chemotherapy treatments with a plurality of drug solutions by mixing the solutions together and feeding the mixture into the patient through a single catheter set and pump. If the different drug solutions are compatible they can be mixed and delivered through a single catheter. Unfortunately, there are only a limited number of drug combinations which can be used in this manner. Many drugs cannot be mixed together prior to infusion. Some drugs react to neutralize one another. Other drugs react to form precipitates which may block the catheter tube or possibly cause an embolism in the patient.
It is desirable to provide a single pump that can deliver a multiplicity of drug solutions without mixing any of them prior to infusion. It is especially desirable for the pump to be lightweight so that it might be used on an ambulatory patient. U.S. Pat. No. 4,313,439 (Babb et al.) recognized the need for lightweight infusion pumps in a single drug delivery system. Babb et al. provided an escapement mechanism which applied a continuous pressure to a syringe. A constrictor acted on a catheter tube to prevent fluid from passing through the tube except during periods when the force from the constrictor was released to allow fluid through the tube.
SUMMARY OF THE INVENTION
This invention is directed to an infusion pump containing a compressible fluid source having an outlet which is normally blocked by a valve. A pressurized source of gas is fed through a pressure regulator and then against the fluid source to urge fluid against the valve. The valve may be opened to allow fluid to flow through the outlet.
The present invention is especially adapted for use with a plurality of compressible fluid sources. Control means are provided for selectively opening the valves to the sources. According to the present embodiment of the invention, a conduit is provided from the pressure regulator to the fluid source. The preferred sources are syringes. The syringes are sealed so that only the pressurized gas directed through the conduit is allowed into the tops of the syringes.
A disposable sterilizable valve of the present invention is connected to the bottom of each of the syringes. The valve of the present invention includes a hollow housing and a sealing member which is slidably mounted within a cylindrical bore inside the housing. The sealing member is connected to a plunger stem that has a T-shaped end which extends through a hollow slot in the bottom of the housing. A spring biases the sealing member away from the wall of the housing and into a closed position which prevents fluid from leaving through an outlet conduit in the side of the housing. The valve can be opened by pulling on the T-shaped end of the plunger stem. A flow restrictor is provided at the opposite end of the central bore to restrict the flow of fluid into the housing.
The pump of the present invention is light in weight since it is powered mostly by the pressurized gas. The only moving parts are the valves. This advantageously minimizes the chances of having any mechanical problems. Furthermore, this minimizes the need for electric power so that a very light battery package is sufficient to run the device. The construction of the present invention is easily adapted for use in multiple fluid infusions. The control means gives doctors a wide latitude in choosing their regimens, any of which may be programmed into the device.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiment of the invention, taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a substantially cut away view of the pump of the present invention.
FIG. 2 is a cross-sectional view of the pump of FIG. 1 taken along lines 2--2.
FIG. 3 is a perspective view of a syringe for use with the present invention.
FIG. 4 is a perspective view of the syringe of FIG. 3 with its needle and plunger stem removed.
FIG. 5 is a cross-sectional view of the valve of the present invention in the closed position.
FIG. 6 is a cross-sectional view of the valve of FIG. 5 in the open position.
FIG. 7 is a bottom view of the valve of FIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIGS. 1 and 2, the infusion pump 10 of the present invention is illustrated. The pump is powered by a supply of compressed gas under high pressure. The supply is carried in canister 12. The canister may be replaced as needed to insure a supply of gas capable of pumping the contents of all of the fluid sources within the pump. The gas canister 12 is connected to a pressure regulator 14. The regulator 14 accepts the high pressure from the canister 12 and produces a continuous low pressure for use in the pump. The regulator 14 has a switch 15 which may be turned on, off, or to purge. In purge, the gas supply can be emptied through a pressure relief valve 16. The preferred embodiment is an ambulatory pump. For this purpose, the canister 12 is expected to be the most convenient source of a constant pressure. In a stationary device it may be possible to replace the canister with a central line that supplies a source of gas pressure. It may also be appropriate under certain circumstances to use mechanical means of providing a continuous source of pressure.
The gas pressure acts on a compressible fluid source to urge the fluid source out of its container. According to the preferred embodiment of the present invention, a syringe 20 such as that shown in FIGS. 3 and 4 may be used as the compressible fluid source. Such a syringe is described in a copending patent application entitled "SYRINGE" invented by Eric W. Brown and sharing the same assignee and filing date as the present application. Said patent application is hereby incorporated by reference within. The pump of the present invention is illustrated with three syringes. Obviously, the pump of the present invention may be constructed with any number of sources from as low as one to as high as would be medically useful.
The described syringe 20 has an elliptical central bore 21 and an elliptical sealing member 22 which is slidable within that bore. A plunger stem 23 may be screwed into or out of the slidable member 22. To use the syringe 20 with the pump of the present invention, a conventional needle 28 is placed on the syringe tip 24 of the syringe 20. The plunger stem 23 at this time is screwed into the slidable member 22 as shown in FIG. 3. The slidable member 22 is pushed all the way against the wall of the syringe barrel and the needle 28 is poked into a desired fluid solution. The plunger stem 23 is pulled back to suck the fluid solution into the syringe 20. When the syringe contains the desired amount of solution, the plunger stem 23 is unscrewed from the slidable member and the needle is taken off the syringe tip 24. The syringe, as illustrated in FIG. 4, is now ready for use in the infusion pump. A syringe is used because it expels fluid upon being compressed. Any compressible fluid source may be used in place of the syringe. The syringe, however, is advantageously efficient in that it is capable of pushing out the entire fluid contents except for a very minor amount that might be left in the syringe tip.
The syringe tip 24 is surrounded by a luer lock fitting 26. This is a standard male luer lock fitting that holds a conventional needle on the syringe. In the pump 10, a valve 30 is placed onto the syringe tip 24 of the syringe 20. The valve 30 is illustrated in FIGS. 5, 6, and 7. The valve controls the flow of fluid from its respective syringe 20. The valve 30 is normally closed to prevent fluid from escaping from the syringe 20 since the syringe is continuously under pressure while the pressure regulator 14 is on. A spring 36 within the valve 30 supplies the required pressure to hold the valve closed against the pressure exerted by the fluid from the syringe. Fluid is only allowed to leave the fluid source when the valve 30 is opened.
The valve 30 consists of a hollow housing 31. The valve 30 is made from sterilizable materials. Preferably, an inexpensive plastic material is used so that the valve is disposable. This allows total replacement of the syringes, valves and catheters with each use. By providing disposable valves the time consuming task of repeated sterilization is not required.
Tabs 32 extend from the valve housing 31 and serve as the female luer lock fitting. The tabs 32 engage the threads of the male luer lock fitting 26 so that the valve 30 may be screwed onto a syringe 20. The threads on the syringe 20 should be arranged so that the valve's outlet 44 points in the appropriate direction when the valve is screwed securely on the syringe. The valve 30 has a central bore 23 extending from an open end to a partially closed end of the housing 31. There is a ledge 39 in the central bore against which the syringe tip 24 will be held against when the valve is locked onto the syringe. At the partially closed end of the valve 30, a slot 40 provides an opening through the bottom wall of the housing 31. In construction of the valve, the spring 36 is inserted into the central bore 33. The spring 36 acts as the bias to force the valve normally closed. After the spring is inserted, a slidable sealing member 34 having a T-shaped plunger stem 38 is dropped through the central bore 33. The T-shaped stem 38 fits through the slot 40. Once it is through it may be turned 90° to help prevent it from falling back into the bore 33. The slidable member 34 provides a frictional seal against the walls of the central bore 33 to prevent fluid from leaking.
In the preferred embodiment, a flow restrictor 42 is inserted at the top of the valve 30. The flow restrictor 42 limits the flow of fluid through the valve 30 to a precise small amount. In this manner the amount of fluid solution being infused into a patient may be more accurately determined. As shown in FIG. 5, when the valve is closed the slidable member 34 is biased against the flow restrictor 42. In this position, the slidable member 34 blocks the fluid contents of the syringe from access to an outlet 44 which is provided in a side wall of the hollow housing 31. When the plunger stem 38 is retracted as in FIG. 6, fluid is allowed to flow through the flow restrictor 42, into the central bore 33 and out through the outlet 44. When the plunger stem 38 is released, the slidable sealing member pushes the fluid in the central bore out through outlet 44 and back through flow restrictor 42 until the valve is completely closed and the flow of fluid stops.
The syringe and their valves are accomodated in a pump housing 11. A rubber gasket 18 is connected to the pressure regulator 14 via conduit 17. The gasket 18 shown in FIG. 1 has three stopper-shaped seals for placement into the tops of the syringes 20. The conduit 17 may be three tubes connected together to carry the same pressure from the regulator 14. Alternatively, a single tube with three side outlet tubes may be used to connect the pressure regulator 14 to the three syringes 20. The conduit 17 is provided from the pressure regulator 14 to and through the centers of each of the stopper-shaped seals. The gasket 18 seals off each syringe 20 from the atmosphere. Each syringe 20 is subjected solely to the pressure provided from the regulator 14.
At the end of the housing opposite where the pressurized canister 12 and pressure regulator 14 are located, there are three solenoids 48. Any similarly functioning electromechanical device may be substituted for the solenoids 48. The movable core of the solenoid is provided with a clamp into which the plunger stem 38 of the valves may be snapped. When the solenoid 48 is energized the movable core is pulled downward, pulling the valve stem 38 with it to open the valve 30 and allow fluid to flow.
A catheter 52 is bonded in a conventional manner to the outlet 44 of each of the valves 30. According to the preferred embodiment, the other end of each catheter is fitted into a multilumen adapter 50. Any standard multilumen adapter may be used. The adapter connects each of the catheters 52 to a separate lumen in a multilumen catheter 53. The multilumen catheter 53 is connected to the adapter 50 for conducting fluids into the patient. It is preferred that the multilumen catheter be reinforced to prevent it from kinking. The preferred catheter set for use with the pump of the present invention is described in copending application entitled MULTILUMEN CATHETER SET sharing the same inventors, assignee and filing date as the present invention. The disclosure of said application is incorporated by reference herein. It is also possible to use separate single catheters from each of the fluid sources, however, this would require a separate intravascular access point for each tube, thereby becoming rather cumbersome and undesirable.
Each solenoid is connected to a printed circuit board 64. A control unit is provided on the circuit board 64. The control unit contains a microprocessor or other equivalent programmable controller for selectively activating the solenoids. The preferred ambulatory embodiment of the pump is provided with a flat lightweight battery package 60 which takes up a minimum amount of space and provides sufficient power to run the solenoids and the control circuitry. A shield 58 is provided to protect the electronic circuitry from any stray fluids. The shield 58 physically separates the electronic circuitry from the syringes. An interface 62 is also provided to allow the pump to interface with a programming device such as a computer or other dedicated programmer. It would also be possible but more cumbersome to provide the programming device within the pump unit itself.
In accordance with the present invention, a unique pump is provided for selectively pumping a plurality of fluid solutions into a catheter tube for infusion into a patient. It will be understood that the details of the control unit form no part of the present invention, except to the extent that it provides one commercially available programmable control means suitable for use in carrying out the steps required by the present invention, the programming techniques for adapting a microprocessor unit to such steps being well known in the microprocessor and programmable control means art.
The pump of the present invention may be programmed to provide fluids in any sequence, in any amount and at any time. The control unit is programmed to provide power to selected solenoids. The duration for which power is provided, the sequence of solenoid selection and the times at which power is provided may be programmed into the control. Pressure is continuously administered to all of the fluid sources. Fluid is infused only when a solenoid is energized to open a valve. The physician is thus given great flexibility in selecting an infusion regimen for a plurality of drug solutions.
The multilumen catheter connected to the pump may be readily attached to the patient using the multilumen catheter set described in the inventors' copending application. The pump may be carried by the patient for a couple of months. It is possible for a physician to regulate the administration of a drug regimen during the couple of months by programming the pump of the present invention. The patient will be provided with drug solutions at regularly prescribed intervals as preprogrammed by the physician over that period of time. The pump provides the patient with the freedom to leave his or her bed and still receive a complicated prescription involving more than one drug solution. Since electric power is only needed to periodically operate the solenoids, a small lightweight battery pack is sufficient. This contributes to the light weight of the pump which is especially beneficial to the patient's freedom of movement.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. A switching mechanism might be placed near the pressure regulator to selectively provide pressure to selected syringes, thereby controlling delivery of fluid from the top end rather than the bottom at the valves. As already mentioned any type of compressible fluid source might be used in the present invention as well as any number of such sources. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Torrance,CA,US | | Assignee/Applicant First: I Flow Corporation,Torrance,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Torrance,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Tai, Henry T. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Tai, Henry T. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | Tai Henry T.,Pacific Palisades,CA,US | | Inventor Count: 2 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Pellegrino, Stephen C. / Costantino, Mario | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1987-05-19 | | Publication Month: 05 | | Publication Year: 1987 | | Application Number: US1984677849A | | Application Country: US | | Application Date: 1984-12-05 | | Application Month: 12 | | Application Year: 1984 | | Application with US Provisional: US1984677849A | 1984-12-05 | | Priority Number: US1984677849A | | Priority Country: US | | Priority Date: 1984-12-05 | | Priority Date - Earliest: 1984-12-05 | | Priority Month: 12 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005145 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005145
| A
| A61
| A61M
| A61M0005
| A61M0005145
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/14526
| A61M 2005/14513
Y10S 128/12
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604141, 128DIG12, 222136, 222399, 604143, 604249 | | US Class (divided): 604/141, 128/DIG12, 222/136, 222/399, 604/143, 604/249 | | US Class - Main: 604141 | | US Class - Original: 604141 | 604143 | 604249 | 128DIG12 | 222136 | 222399 | | ECLA: A61M0005145B2, K61M0005145A4 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
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| MCKINLEY MEDICAL L L L P
|
USD578209S1
| 2008-10-07
| ERBE ELEKTROMEDIZIN
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USRE35501E1
| 1997-05-06
| MEDICATION DELIVERY DEVICES
|
WO1990004987A1
| 1990-05-17
| APPLIED VASCULAR DEVICES INC
|
WO1991016093A1
| 1991-10-31
| BAXTER INT
|
WO1992015345A1
| 1992-09-17
| HABLEY MEDICAL TECHNOLOGY CORP
|
WO1994026329A1
| 1994-11-24
| REYNOLDS DAVID L
|
WO2004009162A1
| 2004-01-29
| DISETRONIC LICENSING AG
|
| | Count of Citing Patents: 139 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
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2009-12-11
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| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0133 2009-11-25 |
| |
2009-12-03
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| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE BY SECURED PARTY; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023639/0135 2009-11-25 |
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2009-11-30
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| Description: ASSIGNMENT I-FLOW CORPORATION, CALIFORNIA RELEASE; ASSIGNOR:SILICON VALLEY BANK; REEL/FRAME:023627/0962 2009-11-25 |
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1999-05-19
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1999-05-19
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| Description: FEE PAYMENT |
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1998-12-08
| REMI
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| Description: MAINTENANCE FEE REMINDER MAILED |
| |
1996-10-08
| AS
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| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:008059/0527 1996-07-18 |
| |
1995-11-13
| AS
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| Description: ASSIGNMENT SILICON VALLEY BANK, CALIFORNIA SECURITY INTEREST; ASSIGNOR:I-FLOW CORPORATION; REEL/FRAME:007737/0015 1995-08-11 |
| |
1994-12-05
| SULP
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| Description: SURCHARGE FOR LATE PAYMENT |
| |
1994-12-05
| FPAY
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| Description: FEE PAYMENT |
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1990-10-01
| FPAY
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|
| Description: FEE PAYMENT |
| |
1985-10-10
| AS
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| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP OF CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:TAI, HENRY T.; REEL/FRAME:004476/0664 1985-08-05 |
| |
1985-10-10
| AS
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| Description: ASSIGNMENT BROWN, ERIC W. ASSIGNS A FORTY-NINE PERCENT INTEREST (49%).; ASSIGNOR:I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP; REEL/FRAME:004476/0666 1985-08-05 |
| |
1985-10-10
| AS
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| Description: ASSIGNMENT TAI, HENRY T. ASSIGNS A FIFTY-ONE PERCENT INTEREST (51%).; ASSIGNOR:I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP; REEL/FRAME:004476/0670 1985-08-05 |
| |
1985-10-10
| AS
| -
|
| Description: ASSIGNMENT I-FLOW CORPORATION, A CORP OF CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:004476/0668 1985-08-05 |
| |
1984-12-04
| AS
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| Description: ASSIGNMENT I-FLOW BIOMEDICAL, PO BOX 335, PACIFIC PAISADES, C ASSIGNMENT OF ASSIGNORS INTEREST.; ASSIGNORS:BROWN, ERIC W.; TAI, HENRY T.; REEL/FRAME:004345/0204 1984-12-03 |
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| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0133
| 2009-12-11
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023627/0962
| 2009-11-30
|
| Conveyance: RELEASE |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1996-07-18
| 008059/0527
| 1996-10-08
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: LEVY, SMALL & LALLAS WALTER S. MITCHELL, ESQ. 815 MORAGA DRIVE LOS ANGELES, CA 90049 |
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SILICON VALLEY BANK,SANTA CLARA,CA,US
| I-FLOW CORPORATION
| 1995-08-11
| 007737/0015
| 1995-11-13
|
| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: FLORENCE G. KNISLEY SILICON VALLEY BANK ATTN: LOAN DOCUMENTATION GROUP 3003 TASMAN DRIVE SANTA CLARA, CA 95054 |
| |
TAI HENRY T.,MA,US
| I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP
| 1985-08-05
| 004476/0670
| 1985-10-10
|
| Conveyance: ASSIGNS A FIFTY-ONE PERCENT INTEREST (51%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW CORPORATION A CORP OF,CA,US
| BROWN, ERIC W.
| 1985-08-05
| 004476/0668
| 1985-10-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
BROWN ERIC W.,MA,US
| I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP
| 1985-08-05
| 004476/0666
| 1985-10-10
|
| Conveyance: ASSIGNS A FORTY-NINE PERCENT INTEREST (49%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW CORPORATION A CORP OF,CA,US
| TAI, HENRY T.
| 1985-08-05
| 004476/0664
| 1985-10-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
| |
I-FLOW BIOMEDICAL CORP. OF CA.,PACIFIC PAISADES,CA,US
| BROWN, ERIC W.
| 1984-12-03
| 004345/0204
| 1984-12-04
|
TAI, HENRY T.
| 1984-12-03
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN PFUND, 130 WATER ST. BOSTON, MA 02109 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
| 2009-12-03
|
| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4666430A
| 19870519
| Brown Eric W.
| I FLOW CORP
|
| Title: Infusion pump |
| |
US4759527A
| 19880726
| Brown Eric W.
| I FLOW CORP
|
| Title: Infusion pump valve |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4666430A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4666430A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 27/43 | | US4581012A | Multilumen catheter set | | Publication Number: US4581012A | | Title: Multilumen catheter set | | Title (Original): Multilumencatheter set | | Title (English): Multilumencatheter set | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Multi-lumen catheter set comprises subcutaneous section joined to outer reinforced section by multi-lumen connector with tissue cuff | Abstract:
A subcutaneously tunneled catheter set is disclosed in which a first multilumen catheter is connected to a second reinforced multilumen catheter. A tissue cuff is located near the connection between the two catheter tubes. The disclosure includes a multilumen connector made from a housing that provides conduits between two sets of ports which connect to catheter tubes at either end. The tissue cuff is connected around the outside of the multilumen connector. A multilumen locking connector is provided so that the subcutaneously tunneled multilumen catheter set may be connected directly to an exterior multilumen catheter tube. | Abstract (English):
A subcutaneously tunneled catheter set is disclosed in which a first multilumen catheter is connected to a second reinforced multilumen catheter. A tissue cuff is located near the connection between the two catheter tubes. The disclosure includes a multilumen connector made from a housing that provides conduits between two sets of ports which connect to catheter tubes at either end. The tissue cuff is connected around the outside of the multilumen connector. A multilumen locking connector is provided so that the subcutaneously tunneled multilumen catheter set may be connected directly to an exterior multilumen catheter tube. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A subcutaneously tunneled catheter set is disclosed in which a first multilumen catheter is connected to a second reinforced multilumen catheter. A tissue cuff is located near the connection between the two catheter tubes. The disclosure includes a multilumen connector made from a housing that provides conduits between two sets of ports which connect to catheter tubes at either end. The tissue cuff is connected around the outside of the multilumen connector. A multilumen locking connector is provided so that the subcutaneously tunneled multilumen catheter set may be connected directly to an exterior multilumen catheter tube. | | Abstract (Spanish): | Claims:
We claim:
1. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
a housing for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, said housing having multiple ports on one side connected by conduits to multiple ports on an opposite side; and
*
a tissue cuff connected around the outside of said housing.
2. The subcutaneously tunneled catheter set of claim 1 wherein said reinforcement means comprises a wire coil.
3. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from closing when said catheter is bent;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter;
*
a tissue cuff located near the connection between said first and second catheters for anchoring the catheter set to the patient's skin;
*
said second multilumen catheter being connected to said connecting means at one end and to a lock adapter at the other end, said lock adapter including a plurality of ports that fit into the lumens of said second catheter and a plurality of conduits each connected to a different one of said ports; and
*
said lock adapter being connectable with a second lock adapter to provide communication between said subcutaneously tunneled catheter set and a third multilumen catheter.
4. The subcutaneously tunneled catheter set of claim 3 wherein said reinforcement means comprises a wire coil.
5. The subcutaneously tunneled catheter set of claim 3 wherein said connecting means comprises a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports.
6. The subcutaneously tunneled catheter set of claim 5 wherein said tissue cuff is connected around the outside of said connecting means.
7. A multilumen connector comprising:
*
a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and
*
a tissue cuff attached around the outside of said housing.
8. A multilumen locking connector comprising:
*
a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face;
*
a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and
*
means for locking said first lock adapter to said second lock adapter;
*
said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
9. The multilumen locking connector of claim 8 wherein said locking means comprises:
*
thread engageable means extending from said first lock adapter;
*
shoulder means extending from said second lock adapter; and
*
an internally threaded lock ring having a base for abutting said shoulder means so that when said ring is screwed onto the thread engaging means of said first lock adapter, the first mating face is pulled into sealing contact with the second mating face.
10. The multilumen locking connector of claim 8 further comprising means for preventing the mating faces from being interengaged in any other than one position.
11. The multilumen locking connector of claim 8 wherein one of said mating faces protrudes at each intersection of the conduits with said mating face and the other of said mating faces is indented where the conduits meet the mating face such that the protrusions of said one mating face fit within the indentations of the other mating face.
12. The multilumen locking connector of claim 11 wherein said indentations and said protrusions are asymmetrically arranged or shaped so that there is only one position in which the mating faces can be interengaged.
13. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, and
*
a tissue cuff connected around the outside of said connecting means. | | Claims Count: 13 | Claims (English):
We claim:
1. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
a housing for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, said housing having multiple ports on one side connected by conduits to multiple ports on an opposite side; and
*
a tissue cuff connected around the outside of said housing.
2. The subcutaneously tunneled catheter set of claim 1 wherein said reinforcement means comprises a wire coil.
3. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from closing when said catheter is bent;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter;
*
a tissue cuff located near the connection between said first and second catheters for anchoring the catheter set to the patient's skin;
*
said second multilumen catheter being connected to said connecting means at one end and to a lock adapter at the other end, said lock adapter including a plurality of ports that fit into the lumens of said second catheter and a plurality of conduits each connected to a different one of said ports; and
*
said lock adapter being connectable with a second lock adapter to provide communication between said subcutaneously tunneled catheter set and a third multilumen catheter.
4. The subcutaneously tunneled catheter set of claim 3 wherein said reinforcement means comprises a wire coil.
5. The subcutaneously tunneled catheter set of claim 3 wherein said connecting means comprises a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports.
6. The subcutaneously tunneled catheter set of claim 5 wherein said tissue cuff is connected around the outside of said connecting means.
7. A multilumen connector comprising:
*
a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and
*
a tissue cuff attached around the outside of said housing.
8. A multilumen locking connector comprising:
*
a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face;
*
a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and
*
means for locking said first lock adapter to said second lock adapter;
*
said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
9. The multilumen locking connector of claim 8 wherein said locking means comprises:
*
thread engageable means extending from said first lock adapter;
*
shoulder means extending from said second lock adapter; and
*
an internally threaded lock ring having a base for abutting said shoulder means so that when said ring is screwed onto the thread engaging means of said first lock adapter, the first mating face is pulled into sealing contact with the second mating face.
10. The multilumen locking connector of claim 8 further comprising means for preventing the mating faces from being interengaged in any other than one position.
11. The multilumen locking connector of claim 8 wherein one of said mating faces protrudes at each intersection of the conduits with said mating face and the other of said mating faces is indented where the conduits meet the mating face such that the protrusions of said one mating face fit within the indentations of the other mating face.
12. The multilumen locking connector of claim 11 wherein said indentations and said protrusions are asymmetrically arranged or shaped so that there is only one position in which the mating faces can be interengaged.
13. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, and
*
a tissue cuff connected around the outside of said connecting means. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
a housing for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, said housing having multiple ports on one side connected by conduits to multiple ports on an opposite side; and
*
a tissue cuff connected around the outside of said housing. | Independent Claims:
1. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
a housing for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, said housing having multiple ports on one side connected by conduits to multiple ports on an opposite side; and
*
a tissue cuff connected around the outside of said housing.
3. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from closing when said catheter is bent;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter;
*
a tissue cuff located near the connection between said first and second catheters for anchoring the catheter set to the patient's skin;
*
said second multilumen catheter being connected to said connecting means at one end and to a lock adapter at the other end, said lock adapter including a plurality of ports that fit into the lumens of said second catheter and a plurality of conduits each connected to a different one of said ports; and
*
said lock adapter being connectable with a second lock adapter to provide communication between said subcutaneously tunneled catheter set and a third multilumen catheter.
7. A multilumen connector comprising:
*
a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and
*
a tissue cuff attached around the outside of said housing.
8. A multilumen locking connector comprising:
*
a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face;
*
a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and
*
means for locking said first lock adapter to said second lock adapter;
*
said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
13. A subcutaneously tunneled catheter set comprising:
*
a first multilumen catheter having an exit port for each lumen at one end, said catheter being used for insertion into a patient;
*
a second multilumen catheter including reinforcement means for preventing the lumens from kinking closed;
*
means for connecting the lumens of said first multilumen catheter with the lumens of said second multilumen catheter, and
*
a tissue cuff connected around the outside of said connecting means. | Description:
BACKGROUND OF THE INVENTION
This invention relates to a multilumen catheter set, in particular, one for a subcutaneous route for intravenous infusions.
It has been found convenient for patients who are receiving frequent infusions to provide them with a tunneled subcutaneous catheter. Such a catheter is inserted underneath the skin of the patient and then into a vein. A tissue cuff is provided on the catheter near the skin so that the skin may grow into it and hold the catheter in place. An adapter is located on the end of the catheter, above the skin, into which a mating connector may be attached to connect the subcutaneously tunneled catheter with an external catheter. The external catheter may be used for infusion of fluids or for extraction of body fluid for testing.
Since there are times when more than one infusion or operation using the catheter set may be desirable, dual lumen subcutaneously tunneled catheters have been developed. The two lumens are fused together underneath the skin of the patient. Above the skin the lumens are separated and each is provided with an adapter for separate connection to an outside source.
Experimentation and advances in medicine are creating new needs for infusing a multiplicity of fluids into a patient. There are many applications for which there is a need for a device which can intravenously administer a plurality of drug solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often if different drug solutions are used, they are administered by using a separate catheter tube for each drug. This may require a separate pump for each catheter tube line which would increase costs. There is thus a need for new catheter equipment which can allow doctors to more easily experiment and use new treatments involving a plurality of drug solutions.
SUMMARY OF THE INVENTION
The present invention is directed to a subcutaneously tunneled catheter set which includes a first multilumen catheter for insertion under the skin of a patient. A second reinforced multilumen catheter is provided to prevent kinking of the catheter tube hanging from the patient. A connector is provided to connect the lumens of the reinforced catheter to the lumens of the subcutaneously tunneled catheter. A tissue cuff is located near the connection between the two catheters. According to the preferred embodiment, the connector between the subcutaneous catheter and the reinforced catheter includes a tissue cuff about its circumference.
At the outermost end of the reinforced catheter a multilumen locking connector is attached. The connector includes a first lock adapter which is attached to the reinforced catheter. The adapter includes a plurality of ports for connection with each of the lumens in the reinforced catheter. A conduit is located in the adaptor between each port and a mating face. A second lock adapter is attached to an external catheter for connection to the subcutaneously tunneled catheter set. The second lock adapter includes a plurality of ports and conduits connecting its ports to a second mating face. A device is provided for locking the two adapters together. They are locked in such a way that the mating faces abut one another and the conduits provide communication between the lumens of the external catheter and the lumens of the reinforced subcutaneously tunneled catheter.
The multilumen catheter set of the present invention advantageously provides the ability for long term regimens of drug treatment involving a plurality of drug solutions. The wire reinforced catheter advantageously avoids blockage of the catheter because of bending of the catheter tube. The multilumen locking connector allows the use of an external multilumen catheter with the subcutaneously tunneled catheter set, thereby eliminating any need for a plurality of separate catheters which may require separate pumps and would be more cumbersome and likely to become entangled.
A single pump which may be used in conjunction with the catheter set of the present invention is described in copending patent application entitled "Infusion Pump", sharing the same assignee and filing date as the present invention. The disclosure of said application being hereby incorporated by reference herein.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an illustration of the catheter set of the present invention being used in a patient.
FIG. 2 is a plan view of the catheter set of the present invention in partial cross-section.
FIG. 3 is a cross-sectional view of the multilumen connector of the present invention.
FIG. 3A is an end view of the multilumen connector of FIG. 3 taken along lines A--A.
FIG. 3B is an end view of the multilumen connector of FIG. 3 taken along lines B--B.
FIG. 4 is a cross-sectional view of the multilumen locking connector of the present invention.
FIG. 4A is an end view of the multilumen locking connector of FIG. 4 taken through lines A--A.
FIG. 4B is an end view of the multilumen locking connector of FIG. 4 taken through lines B--B.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, the multilumen subcutaneously tunneled catheter set 100 of the present invention is inserted and used in a patient in a manner similar to that of the well known Hickman catheter sets. According to the present invention, a subcutaneously tunneled multilumen catheter tube 10 is surgically inserted under the skin and into a vein of the patient. The lumens are provided with an exit port 12 at the end of the multilumen catheter tube 10. At the other end of the subcutaneously tunneled multilumen catheter tube there is a tissue cuff 20 into which fibrous tissue of the patient grows to anchor the catheter set and to reduce the likelihood of infection.
A reinforced catheter tube 30 extends from the tissue cuff 20 out of the patient and ends with a multilumen locking connector adapter 40. Since the catheter tubes are very small in diameter bending a multilumen catheter tube may have a tendency to close off one of the lumens with a kink in the outer layer of tubing. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilumen catheter 30. In accordance with the preferred embodiment as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments. The multilumen locking connector adaptor 40 is covered by a heparin cap when the catheter set is not in use. In a multilumen catheter, since the walls of each lumen are often much smaller than the walls of a single catheter tube, the likelihood of a blockage due to kinking when the tube is bent is greater. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilumen catheter 30. In accordance with the preferred embodiment as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments.
Referring now to FIGS. 3, 3A and 3B, the multilumen connector of the present invention is shown. This connector 50 has a plurality of ports 52 at one end onto which the lumens of the subcutaneously tunneled multilumen catheter tube 10 are bonded in a conventional manner. At the opposite end of the connector 50, a corresponding plurality of ports 54 are provided for bonding with the lumens of the reinforced catheter 30. The shapes of the lumens illustrated in FIGS. 3A and 3B differ. Nevertheless, the lumens in the multilumen catheters of the present invention may be any useable shape and they may be the same at both ends of the connector 50. It is desirable however that the lumens be shaped in the subcutaneously tunneled multilumen catheter tube so that the maximum amount of fluid flow is allowed in a minimum amount of space. The ports 52 and 54 at opposite ends of the connectors are in communication with one another via conduits 56. Thus when the connector is hooked up on either end to a multilumen catheter tube, the lumens of the two tubes are in communication with one another. According to the present invention, the preferred placement for the tissue cuff 20 is around the outer circumference of the multilumen connector 50 as shown in FIG. 3. The cuff 20 may be glued, thermally melted or bonded to the connector 50 by any other conventional bonding method.
FIGS. 4, 4A and 4B illustrate the multilumen locking connector for connecting the catheter set of the present invention with an external multilumen catheter tube 80. The external multilumen catheter tube 80 is preferably reinforced to avoid kinking. According to the preferred embodiment the multilumen locking connector 60 is made with a female locking adapter 40, a male locking adapter 62 and a locking ring 64. The female locking adapter 40 includes a plurality of ports 43 onto which the lumens of the reinforced catheter tube 30 are bonded. On the opposite side of the female lock adapter 40 is a mating face 45 which includes a plurality of indentations 46. A conduit 47 passes from each port 43 to the mating face 45. The indentations 46 are located at each conduit 47. A ring 48 including two tabs 49 is shown surrounding the outer circumference of the female adapter 40. The tabs 49 are used for engaging the locking ring 64.
The male multilumen locking adapter 62 is likewise provided with a plurality of ports 65 for fitting within and bonding to its respective multilumen catheter tube. Conduits 66 connect each port 65 to the mating face 67 at the other end of the male adapter 62. The mating face 67 of the male locking connector includes a protrusion 68 at each conduit 66. The protrusions 68 match the indentations 46 of the female locking connector 40 so that the two mating faces 67 and 45 may be interengaged.
The lumens in a multilumen catheter are symmetrically arranged about the center. The conduits in the multilumen locking connector 60 may likewise be symmetrically arranged. However, it may be useful to provide asymmetry or a matching groove and notch in the two mating faces so that the mating facings cannot be interengaged in any other than one position. This will ensure that each time an exterior multilumen catheter tube 80 is attached to the subcutaneously tunneled multilumen catheter set 100 the same lumens will be connected. Therefore, the same drug solutions may be delivered through the plurality of lumens without fear of unwanted mixing in the subcutaneously tunneled catheter set 100. The asymmetry about the center may be provided by giving an irregular shape to one or more of the protrusions and indentations or by an asymmetric positioning of the protrusions and indentations which may be accommodated by directing the conduits in other than a straight line.
The male locking connector 62 is provided with a shoulder 69 on its outer circumference. The shoulder 69 is provided for abutment against the locking ring 64. The locking ring 64 includes a base 71 and a set of inner threads 73. The base 71 encircles the male locking adapter 62 and is located at the side of the shoulder 69 near the ports 65. Upon interengagement of the faces of the male and female locking adapters, the locking ring 64 may be screwed onto the female locking adapter 40. The tabs 49 of the female locking adapter 40 engage the threads 73 of the locking ring 64 as it is being screwed. When the base 71 of the ring 64 comes into abutment with the shoulder 69 of the male locking adapter 62, the locking ring 64 will be pulling the male and female locking adapters together and may thereby provide a tight seal.
According to the present invention, it is no longer necessary to provide a number of single lumen catheters for infusing a patient with a plurality of drug solutions. The present invention advantageously provides the ability to hook a single multilumen catheter to the patient for provision of an infusion regimen involving a number of drug solutions. This is especially advantageous where the drug solutions may not be mixed together and provided in a single tube.
Of course, it should be understood that various changes and modifications to the preferred embodiment described above will be apparent to those skilled in the art. For example, a snapping mechanism may be used to replace the screwing ring of the multilumen locking connector. This and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Redondo Beach,CA,US | | Assignee/Applicant First: I Flow Corporation,Redondo Beach,CA,US | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Redondo Beach,CA,US | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Tai, Henry T. | Asher, Robert M. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Tai, Henry T. | Asher, Robert M. | | Inventor - w/address: Brown Eric W.,Redondo Beach,CA,US | Tai Henry T.,Pacific Palisades,CA,US | Asher Robert M.,Quincy,MA,US | | Inventor Count: 3 | | Attorney/Agent: Asher, Robert M. | | Attorney/Agent - w/Address: Asher Robert M. | | Correspondent: | | Correspondent - w/Address: | | Examiner: Truluck, Dalton L. | | Publication Country Code: US | | Publication Kind Code: A | | Publication Date: 1986-04-08 | | Publication Month: 04 | | Publication Year: 1986 | | Application Number: US1984678481A | | Application Country: US | | Application Date: 1984-12-05 | | Application Month: 12 | | Application Year: 1984 | | Application with US Provisional: US1984678481A | 1984-12-05 | | Priority Number: US1984678481A | | Priority Country: US | | Priority Date: 1984-12-05 | | Priority Date - Earliest: 1984-12-05 | | Priority Month: 12 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000100, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000100
| A
| A61
| A61M
| A61M0001
| A61M000100
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0247
A61M 39/10
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604043, 604175, 604533, 604283 | | US Class (divided): 604/043, 604/175, 604/533, 604/283 | | US Class - Main: 604043 | | US Class - Original: 604043 | 604175 | 604283 | | ECLA: A61M003902T, A61M003910 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: Advertisement for Howe's Multi-Infusion Catheter System Sanders, "Experience with Double Lumen Right Atrial Catheters", Journal of Parenteral and Eteral Nutrition. | Cournand et al., "Double Lumen Catheter for Intravenous and Intracardiac Blood Sampling and Pressure Recording". | Standard Wall Catheters Including the Cournand Double Lumen and the Fox-Fry Catheter. | The Swanz-Ganz Flow-Directed Monitoring Catheters. | Advertisement for a Multi-Med Infusion Catheter. | Anderson et al., "The Double-Lumen Hickman Catheter", American Journal of Nursing. | Gray et al., "Multiple Use of TPN Catheter is Not Heresy: Retrospective Study," Nutritional Support Services. | | Count of Cited Refs - Non-patent: 7 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
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WO1991010456A1
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WO1991011214A1
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WO1995008361A1
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WO1997032619A1
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2009-12-11
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1985-10-10
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1985-10-10
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1985-10-10
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1985-10-10
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I-FLOW CORPORATION,LAKE FOREST,CA,US
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| Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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I-FLOW CORPORATION,LAKE FOREST,CA,US
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| Corresponent: UCC DIRECT SERVICES 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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I-FLOW CORPORATION,LAKE FOREST,CA,US
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| Corresponent: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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SILICON VALLEY BANK,SANTA CLARA,CA,US
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| Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
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SILICON VALLEY BANK,SANTA CLARA,CA,US
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TAI HENRY T.,MA,US
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| Conveyance: ASSIGNS A FIFTY-ONE PERCENT INTEREST (51%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
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I-FLOW CORPORATION A CORP OF,CA,US
| BROWN, ERIC W.
| 1985-08-05
| 004476/0668
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| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
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BROWN ERIC W.,MA,US
| I-FLOW BIOMEDICAL COMPANY, A CALIFORNIA PARTNERSHIP
| 1985-08-05
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| 1985-10-10
|
| Conveyance: ASSIGNS A FORTY-NINE PERCENT INTEREST (49%). |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
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I-FLOW CORPORATION A CORP OF,CA,US
| TAI, HENRY T.
| 1985-08-05
| 004476/0664
| 1985-10-10
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
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I-FLOW BIOMEDICAL A PARTNERSHIP OF CA,PACIFIC PALISADES,CA,US
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TAI, HENRY T.
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ASHER, ROBERT M.
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| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST. |
| Corresponent: ROBERT M. ASHER DIKE, BRONSTEIN, ROBERTS, CUSHMAN & PFUND 130 WATER ST. BOSTON, MA 02109 |
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I-FLOW CORPORATION,LAKE FOREST,CA,US
| SILICON VALLEY BANK
| 2009-11-25
| 023639/0135
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| Reassignment (US) - Conveyance - Latest: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: UCC DIRECT SERVICES ATTN: 14080632 187 WOLF ROAD, SUITE 101 ALBANY, NY 12205 |
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| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US4581012A
| 19860408
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumencatheter set |
| |
EP185977A1
| 19860702
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
US4701159A
| 19871020
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4581012A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US4581012A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 28/43 | | EP185977A1 | Multilumen catheter set. | Mehrlumeniger Katheteransatz. | Set pour cathéter à lumières multiples. | Multilumen catheter set | Set pour cathéter à lumières multiples | Mehrlumeniger Katheteransatz | | Publication Number: EP185977A1 | | Title: Multilumen catheter set. | Mehrlumeniger Katheteransatz. | Set pour cathéter à lumières multiples. | Multilumen catheter set | Set pour cathéter à lumières multiples | Mehrlumeniger Katheteransatz | | Title (Original): Mehrlumeniger Katheteransatz. | Multilumen catheter set | Set pour cathéter à lumières multiples | Mehrlumeniger Katheteransatz | | Title (English): Multilumen catheter set | | Title (French): Set pour cathéter à lumières multiples | | Title (German): Mehrlumeniger Katheteransatz | | Title (Spanish): | | Title - DWPI: Multi-lumen connector with tissue cuff at one end of multi-lumen catheter with locking connector at other end | Abstract:
A subcutaneous catheter set (100) is disclosed in which a multilumen catheter tube (10) has a tissue cuff (20) con-nected about its outer circumference. A lock adapter (40) (62) (64) has a plurality of conduits in communication with the lumens of the multilumen catheter tube (10). A complemen-tary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the sub-cutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | Abstract (English):
A subcutaneous catheter set (100) is disclosed in which a multilumen catheter tube (10) has a tissue cuff (20) con-nected about its outer circumference. A lock adapter (40) (62) (64) has a plurality of conduits in communication with the lumens of the multilumen catheter tube (10). A complemen-tary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the sub-cutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A subcutaneous catheter set (100) is disclosed in which a multilumen catheter tube (10) has a tissue cuff (20) con-nected about its outer circumference. A lock adapter (40) (62) (64) has a plurality of conduits in communication with the lumens of the multilumen catheter tube (10). A complemen-tary lock adapter is connected to either another multilumen catheter tube, a plurality of single lumen lines, a plurality of injection tubes or may be plugged to act as a seal. The two lock adapters can be locked together so that the sub-cutaneous multilumen catheter may be connected directly to any of the items attached on the complementary lock adapter. | | Abstract (Spanish): | Claims:
Claims:
1. A multilumen connector comprising: a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and a tissue cuff attached around the outside of said housing.
2. A multilumen locking connector comprising: a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face; a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and means for locking said first lock adapter to said second lock adapter; said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
3. The multilumen locking connector as claimed in claim 2, wherein said locking means comprises: thread engageable means extending from said first lock adapter; shoulder means extending from said second lock adapter; and an internally threaded lock ring having a base for abutting said shoulder means so that when said ring is screwed onto the thread engaging means of said first lock adapter, the first mating face is pulled into sealing contact with the second mating face.
-2-0185977 A subcutaneous catheter set comprising: a multilumen catheter tube having one end with an exit port for each lumen and an other end; a tissue cuff connected around an outer circumference of said catheter tube; a first lock adapter including a plurality of ports connected *o the lumens of said catheter tube and a plurality of conduits each connected to one of said ports; a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter; and means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter.
5. The subcutaneous catheter set of claim 4 wherein said plurality of protrusions in said second lock adapter are solid so that when said first lock adapter is locked to said second lock adapter said protrusions sealingly close each of said conduits.
6. The subcutaneous catheter set of claim 4 or 5 further comprising: a conduit through at least one of said protrusions; and a rigid injection tube having one end connected to said conduit in said at least one of said protrusions and an other end covered by a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn, said plug reseals said other end of said injection tube.
7. The subcutaneous catheter set of one of claims 4 to 6 further comprising: a conduit through at least one of said protrusions; and a single lumen access line connected to said conduit in said protrusion.
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3 0185977 8. A subcutaneous catheter comprising: a multilumen catheter tube having one end with an exit port for each lumen and an other end; a tissue cuff connected around an outer circumference of said catheter tube; and a first lock adapter, attached to the other end of said catheter tube, including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to a different one of said ports, said first lock adapter being connectable with a second lock adapter to provide communication between said multilumen catheter tube and a plurality of lumens.
9. A multilumen locking connector comprising: a multilumen catheter tube; a first lock adapter, connected at one end of said tube, including a plurality of conduits in communication with the lumens of said multilumen catheter tube; and means for locking said first lock adapter to a second lock adapter having a plurality of conduits.
10. An octopus adapter for a multilumen catheter set comprising: a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter, means for locking said first lock adapter to a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and at least one single lumen access line each having one end connected to one of said ports.
I
4-01 85977 il. The octopus adapter of claim 10, further comprising a Heath surrounding all of said at least one single lumen access lines adjacent the rear face of said first lock-apter.
12. An injection adapter for a multilumen catheter set com.ri sing: a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter; means for locking said first lock adapter to a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the-conduits of said first lock adapter; and at least one rigid injection tube each having one end connected to one of said ports atd an other end covered with a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
13. The injector adapter of claim 12 further comprising a single lumen access line connected to one of the ports on said first lock adapter.
14. A sealing cap for a multilumen catheter set comprising: a first lock adapter including at least one solid protrusion in a front face; and means for locking said first lock adapter to a second lock adapter having a plurality of conduits, such that each of said at least one solid protrusions matingly engages one of said conduits to close off said one of said conduits.
-5-0185977 15. The sealing cap of claim 14, wherein said at least one solid protrusion comprises a plurality of protrusions such that upon locking said first lock adapter to said second lock adapter, each of said conduits is closed off by one of said protrusions. | | Claims Count: 7 | Claims (English):
Claims:
1. A multilumen connector comprising: a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and a tissue cuff attached around the outside of said housing.
2. A multilumen locking connector comprising: a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face; a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and means for locking said first lock adapter to said second lock adapter; said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
3. The multilumen locking connector as claimed in claim 2, wherein said locking means comprises: thread engageable means extending from said first lock adapter; shoulder means extending from said second lock adapter; and an internally threaded lock ring having a base for abutting said shoulder means so that when said ring is screwed onto the thread engaging means of said first lock adapter, the first mating face is pulled into sealing contact with the second mating face.
-2-0185977 A subcutaneous catheter set comprising: a multilumen catheter tube having one end with an exit port for each lumen and an other end; a tissue cuff connected around an outer circumference of said catheter tube; a first lock adapter including a plurality of ports connected *o the lumens of said catheter tube and a plurality of conduits each connected to one of said ports; a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter; and means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter.
5. The subcutaneous catheter set of claim 4 wherein said plurality of protrusions in said second lock adapter are solid so that when said first lock adapter is locked to said second lock adapter said protrusions sealingly close each of said conduits.
6. The subcutaneous catheter set of claim 4 or 5 further comprising: a conduit through at least one of said protrusions; and a rigid injection tube having one end connected to said conduit in said at least one of said protrusions and an other end covered by a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn, said plug reseals said other end of said injection tube.
7. The subcutaneous catheter set of one of claims 4 to 6 further comprising: a conduit through at least one of said protrusions; and a single lumen access line connected to said conduit in said protrusion.
-
3 0185977 8. A subcutaneous catheter comprising: a multilumen catheter tube having one end with an exit port for each lumen and an other end; a tissue cuff connected around an outer circumference of said catheter tube; and a first lock adapter, attached to the other end of said catheter tube, including a plurality of ports connected to the lumens of said catheter tube and a plurality of conduits each connected to a different one of said ports, said first lock adapter being connectable with a second lock adapter to provide communication between said multilumen catheter tube and a plurality of lumens.
9. A multilumen locking connector comprising: a multilumen catheter tube; a first lock adapter, connected at one end of said tube, including a plurality of conduits in communication with the lumens of said multilumen catheter tube; and means for locking said first lock adapter to a second lock adapter having a plurality of conduits.
10. An octopus adapter for a multilumen catheter set comprising: a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter, means for locking said first lock adapter to a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the conduits of said first lock adapter; and at least one single lumen access line each having one end connected to one of said ports.
I
4-01 85977 il. The octopus adapter of claim 10, further comprising a Heath surrounding all of said at least one single lumen access lines adjacent the rear face of said first lock-apter.
12. An injection adapter for a multilumen catheter set com.ri sing: a first lock adapter including a plurality of conduits providing communication between a plurality of openings in a front face of said first lock adapter and a plurality of ports in a rear face of said first lock adapter; means for locking said first lock adapter to a second lock adapter having a plurality of conduits so that the conduits of said second lock adapter are in communication through the front face of said first lock adapter with the-conduits of said first lock adapter; and at least one rigid injection tube each having one end connected to one of said ports atd an other end covered with a plug penetrable by a needle and resealable so that when a needle inserted through said plug into said tube is withdrawn said plug reseals said other end of said injection tube.
13. The injector adapter of claim 12 further comprising a single lumen access line connected to one of the ports on said first lock adapter.
14. A sealing cap for a multilumen catheter set comprising: a first lock adapter including at least one solid protrusion in a front face; and means for locking said first lock adapter to a second lock adapter having a plurality of conduits, such that each of said at least one solid protrusions matingly engages one of said conduits to close off said one of said conduits.
-5-0185977 15. The sealing cap of claim 14, wherein said at least one solid protrusion comprises a plurality of protrusions such that upon locking said first lock adapter to said second lock adapter, each of said conduits is closed off by one of said protrusions. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
Claims:
1. A multilumen connector comprising: a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and a tissue cuff attached around the outside of said housing. | Independent Claims:
Claims:
1. A multilumen connector comprising: a housing having a plurality of conduits connecting a plurality of ports at one end of said housing with a plurality of ports at an other end of said housing, said ports being arranged and shaped at each end to allow a multilumen catheter to fit onto said ports; and a tissue cuff attached around the outside of said housing.
2. A multilumen locking connector comprising: a first lock adapter including a plurality of ports for connection with a first multilumen catheter, a first mating face and a conduit for each port connecting said port to said first mating face; a second lock adapter including a plurality of ports for connection with a second multilumen catheter, a second mating face and a conduit for each port connecting said port to said second mating face; and means for locking said first lock adapter to said second lock adapter; said first mating face being interengageable with said second mating face so that the conduits of said first lock adapter interconnect with the conduits of said second lock adapter.
-2-0185977 A subcutaneous catheter set comprising: a multilumen catheter tube having one end with an exit port for each lumen and an other end; a tissue cuff connected around an outer circumference of said catheter tube; a first lock adapter including a plurality of ports connected *o the lumens of said catheter tube and a plurality of conduits each connected to one of said ports; a second lock adapter having a plurality of protrusions interengageable with said plurality of conduits of said first lock adapter; and means for locking said first lock adapter to said second lock adapter so that said protrusions are sealingly engaged with said conduits of said first lock adapter. | Description:
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01 85 977
MULTILUMEN CATHETER SET
BackgaQund of the Ietion This invention relates to a multilumen catheter set, in particular, one for a subcutaneous route for intravenous infusions.
It has been found convenient for patients who are receiving frequent infusions to provide them with a tunneled subcutaneous catheter. Such a catheter is inserted underneath the skin of the patient and then into a vein. A tissue cuff is provided on the catheter near the skin so that the skin may grow into it and hold the catheter in place. An adapter is located on the end of the catheter, above the skin, into which a mating connector may be attached to connect the subcutaneously tunneled catheter with an external catheter. The external catheter may be used for infusion of fluids or for extraction of body fluid for testing.
Since there are times when more than one infusion or operation using the catheter set may be desirable, dual lumen subcutaneously tunneled catheters have been developed. The two lumens are fused together underneath the skin of the patient. Above the skin the lumens are separated and each is provided with an adapter for separate connection to an outside source. This arrangement can be cumbersome for a patient since there are two tubes and adapters hanging from the implanted catheter and would be even more cumbersome if the implanted catheter has more than two lumens.
01 85977 Furthermore, if one of the single lumen extensions projecting from the implanted multilumen catheter should break off, the entire catheter set may need to be surgically replaced.
Experimentation and advances in medicine are creating new needs for infusing a multiplicity of fluids into a patient.
There are many applications for which there is a need for a device which can intravenously administer a plurality of drug solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. Very often, if different drug solutions are used, they are administered by using a separate catheter tube for each drug. This may require a separate pump for each catheter tube line which would increase costs.
There is thus a need for new catheter equipment which offers greater patient comfort and provides doctors with greater convenience in experimenting and using new treatments that involve a plurality of drug solutions.
SUPERBQ_ HE INVENTION
The present invention is directed to a subcutaneously tunneled catheter set which includes a multilumen catheter for insertion under the skin of a patient. The catheter 01 85977 includes a tissue cuff about its outer circumference. At the outermost end of the catheter, a lock adapter of the present invention is attached. The adapter includes a plurality of ports for connection with each of the lumens in the catheter. A conduit is located in the adapter between each port and a mating face. A complementary lock adapter is attached to an external multilumen catheter, a plurality of single lumen access lines, or a plurality of injection tubes. The complementary lock adapter may instead have solid protrusions for closing off conduits of said first adapter or may have a combination of single lumen catheters, injection tubes and solid protrusions. A device is provided for locking the two adapters together. They are locked in such a way that the conduits provide communication between the lumens of the subcutaneously tunneled catheter and the lumens of the external multilumen catheter, the single lumen access lines, the injection tubes, or the solid protrusions depending upon which are carried by the complementary lock adapter.
The subcutaneously tunneled catheter may be connected by a multilumen connector to a second reinforced multilumen catheter. The reinforcement prevents kinking of the catheter tube. The multilumen connector may advantageously be-rovided with a tissue cuff about its circumference so that one will not be required about the catheter.
01 85977 The multilumen catheter set of the present invention advantageously provides the ability for long term regimens of drug treatment involving a plurality of drug solutions. The wire reinforced catheter may be used to advantageously avoid blockage of the catheter because of bending of the catheter tube. The multilumen locking connector advantageously allows the use of a variety of different external input devices with the subcutaneously tunneled catheter set.
A single pump which may be used in conjunction with the catheter set of the present invention is described in pending patent application U.S. Serial No. 677,849, filed Decembe-r 5, 1984 entitled "Infusion Pump", sharing the same assignee as the present invention. The disclosure of said application is hereby incorporated by reference herein.
Other objects and advantages of the present invention will become apparent during the following description of the presently preferred embodiment of the invention taken in conjunction with the drawings.
BRIEFIDESCRPTION OF TE D.PWMI FIGURE 1 is an illustration of the catheter set of the present invention being used in a patient.
FIGURE 2 is a plan view of a first embodiment of the catheter set of the present invention in partial cross-section.
r. I
I I
01 85977 FIGURE 3 is a cross-sectional view of the multilumen connector of the present invention.
FIGURE 3A is an end view of the multilumen connector of FIG. 3 taken along lines A-A.
FIGURE 3B is an end view of the multilumen connector of FIG. 3 taken along lines B-B.
FIGURE 4 is a cross-sectional view of the multilumen locking connector of the present invention.
FIGURE 4A is an end view of the multilumen locking connector of FIG. 4 taken through lines A-A.
FIGURE 4B is an end view of the multilumen locking connector of FIG. 4 taken through lines B-B.
FIGURE 5 is a plan view of a second embodiment of the present invention.
FIGURE 6 is a plan view of an octopus adapter of the present invention.
FIGURE 7A is a plan view of the lock adapter of the present invention fitted with injection tubes.
FIGURE 7B is a bottom view of the lock adapter of FIG. 7A.
FIGURE 8 is a plan view of the sealing cap of the present invention.
PIGURE 9 is a perspective view of a multipurpose adapter of tie present invention.
I
01 85977 M-TAII D DESCI N O.HE_HE 23FEMRB3DI__DMET Referring now to FIG. 1, the multilumen subcutaneously tunneled catheter set 100 of the present invention is inserted and used in a patient in a manner similar to that of the well known Hickman catheter sets. According to the present invention, a subcutaneously tunneled multilumen catheter tube 10 is surgically inserted under the skin and into a vein of the patient. The lumens are provided with an exit port 12 at the end of the multilumen catheter tube 10.
Near the other end of the subcutaneously tunneled multilumen catheter tube there is-a tissue cuff 20 into which fibrous tissue of the patient grows to anchor the catheter set and to reduce the likelihood of infection.
A reinforced catheter tube 30 extends from the tissue cuff 20 out of the patient and ends with a multilumen locking connector adapter 40. Since the catheter tubes are very small in diameter, bending a multilumen catheter tube may have a tendency to close off one of the lumens with a kink in the outer layer of tubing. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilumen catheter 30. In accordance with the preferred reinforcement as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments. The multilumen locking connector adaptor 40 is covered with a sealing cap such as that shown in FIG. 8 when 01 85977 the catheter set is not in use. In a multilumen catheter, since the walls of each lumen are often much smaller than the walls of a single catheter tube, the likelihood of a blockage due to kinking when the tube is bent is greater. To make the exterior catheter tube kink-proof, reinforcement is provided in the multilumen catheter 30. In accordance with the preferred embodiment as shown in FIG. 2, the catheter 30 is reinforced with a wire coil 32. The wire coil 32 may be additionally used in some applications to conduct electrical information from a sensor located at the patient's body back to diagnostic instruments.
Referring now to FIGS. 3, 3h and 3B, the multilumen connector of the present invention is shown. This connector has a plurality of ports 52. at onle end onto which the lumens of the subcutaneously tunneled multilumen catheter tube 10 are bonded in a conventional manner. At the opposite end of the connector 50, a corresponding plurality of ports 54 are provided for bonding with the lumens; of the reinforced catheter 30. The shapes of the lumens illustrated in FIGS. 3A and 3B differ. Nevertheless, the lumens in the multilumen catheters of the present invention may be any useable shape and they may be the same at both ends of ithe connector 50.
It is desirable, however, that the lumens be shaped in the subcutaneously tunneled multilumen catheter tube so that the maximum amount of fluid flow is allowed in a minimum amount of space. The ports 52 and 54 at opposii:e ends of the connectors are in communication with one another via conduits 56. Thus, when the connector is hooked up on either end to multilumen catheter tube, the lumens of the two tubes are in communication with one another. According to the present invention, the preferred placement for the tissue cuff 20 is around the outer circumference of the multilumen connector 50 as shown in FIG. 3. The cuff 20 may be glued, thermally melted or bonded tD the connector 50 by any other conventional bonding method.
Figures 4, 4A and 4B illustrate the multilumen locking connector for connecting the cathet-er set of the present invention with an external multilumnen catheter tube 80. The external multilumen catheter tube 130 is preferably reinforced to avoid kinking. AQcording to the preferred embodiment the multilumen locking connector 60 is made with a female lock adapter 40, a male lock adapter 62 and a locking ring 64.
The female lock adapter 40 includes a plurality of ports 43 onto which the lumens df the reinforced catheter tube 30 are bonded. On the opposite, side of the female lock adapter 40 is a mating face 45 which includes a plurality of indentations 46, A conduit 47 passes from each port 43 to the mating face 4k.. The indentations 46 are located at each conduit 47. A ring 4. including two tabs 49 is shown surrounding the outer circumference of the female adapter 40. The tabs 49 are used:for engaging the locking ring 64.
01 85977 The male multilumen lock adapter 62 is likewise provided with a plurality of ports 65 for fitting within and bonding to its respective multilumen catheter tube. Conduits 66 connect each port 65 to the mating face 67 at the other end of the male adapter 62. The mating face 67 of the male lock connector includes a protrusion 68 at each conduit 66. The protrusions 68 match the indentations 46 of the female lock connector 40 so that the two mating faces 67 and 45 may be interengaged.
The lumens in a multilumen catheter are symmetrically arranged about the center. The conduits in the multilumen locking connector 60 may likewise be symmetrically arranged.
However, it may be useful to provide asymmetry or a matching groove and notch in the two mating faces so that the mating faces cannot be interengaged in any other than one position.
This will ensure that each time an exterior multilumen catheter tube 80 is attached to the subcutaneously tunneled multilumen catheter set 100 the same lumens will be connected. Therefore, the same drug solutions may be delivered through the plurality of lumens without fear of unwanted mixing in the subcutaneously tunneled catheter set 100. The asymmetry about the center may be provided by giving an irregular shape to one or more of the protrusions and indentations or by an asymmetric positioning of the protrusions and indentations which may be accommodated by directing the conduits in other than a straight line.
The male lock adapter 62 is provided with a shoulder 69 on its outer circumference. The shoulder 69 is provided for abutment against the locking ring 64. The locking ring 64 includes a base 71 and a set of inner threads 73. The base 71 encircles the male lock adapter 62 and is located at the side of the shoulder 69 near the ports 65. Upon interengagement of the faces of the male and female lock adapters, the locking ring 64 may be screwed onto the female lock adapter 40. The tabs 49 of the female lock adapter 40 engage the threads 73 of the locking ring 64 as it is being screwed. When the base 71 of the ring 64 comes into abutment with the shoulder 69 of the male lock adapter 62, the locking ring 64 will be pulling the male and female lock adapters together and may thereby provide a tight seal.
According to a second embodiment of the present invention, it may be uneconomical at times to provide a wire reinforced catheter. As shown in FIG. 5, a single multilumen catheter 10 may be provided with a tissue cuff 20 near its external end. The length of the catheter extending from the patient may be minimized to help avoid kinking. A female lock adapter 40 is connected to the end of the multilumen catheter 10 to provide easy attachment of a variety of adapters, caps and catheters to the implanted catheter. In FIG. 5, the lock adapter 40 is connected to a male lock adapter 62 which is attached to an external multilumen catheter 80.
-
01 85977 Referring now to FIG. 6, an octopus adapter 110 is shown which may be locked onto a multilumen catheter set. The adapter includes a male lock adapter 62 for making a locking connection to the female lock adapter 40 of the subcutaneously tunneled catheter. A single lumen access line 112 is bonded by conventional methods to each of the ports 65 of the male lock adapter. The single lumen access lines 112 may be provided with luer fittings 116 at their outer ends.
The luer fittings allow the lumens to be connected in a conventional manner to syringes, pumps, monitors or other hospital equipment having complementary luer fittings. In the preferred embodiment, a protective sheath 114 is located around the bundle of single lumen lines adjacent the rear of the male lock adapter. The protective sheath 114 helps to strengthen the octopus adapter 110 to help prevent a single lumen line from breaking off from the adapter. However, if a single access line should break off, it is only necessary with the present invention to replace the octopus adapter with a new octopus adapter. This is an advantage over prior art catheter sets in which a broken access line may require surgical replacement of the catheter set.
Rather than proceeding with a long infusion process, there are occasions on which a doctor wishes to inject drugs from a syringe into an implanted catheter set or withdraw blood from an implanted catheter set using a syringe. An injection adapter 120 as shown in FIGS. 7A and 7B, provides the doctor with the ability to use a syringe with a standard hypodermic needle to inject fluids into a patient. The injection adapter includes a male lock adapter 62 and a 01 85977 plurality of injection tubes 122 bonded to the ports 65 of the male lock adapter 62. The injection tubes 122 are made of rigid plastic tubing which is difficult to pierce.
Termination plugs 124 fit into the ends of the injection tubes 122. The plugs 124 are made of a self-sealing rubber, such as silicone. A needle may be inserted through a plug 124 to withdraw blood or inject a fluid. Upon withdrawing the needle from the plug 124, the plug reseals itself.
When the multilumen catheter set is not in use, it is desirable to place a sealing cap 130 on the female adapter 40. The sealing cap 130 is constructed like a male lock adapter 62, however, rather than conduits 66, the sealing cap has solid protrusions 132. Alternatively, a male lock adapter 62 may be used in conjunction with plugs which fit into the conduits 66 to block any fluid flow through the conduits. The sealing cap 130 includes a top shoulder 134 which keeps locking ring 64 from coming off the cap.
A multipurpose cap which combines the functions of the injection adapter, octopus adapter and sealing cap is also possible. Referring to FIG. 9, the multipurpose cap 140 includes an injection tube 122, a single lumen access line 112 and two plugs 144. Although only one particular combination is illustrated, any other desirable combination of injection tubes, single lumen access lines and plugs is 01 85977 also possible. The multipurpose cap shown in FIG. 9 permits infusion of a fluid through one lumen of the catheter set and hypodermic injections through a second lumen of the set.
According to the present invention, it is no longer necessary to provide a number of single lumen catheters for infusing a patient with a plurality of drug solutions.
Single lumens may be used, if desired, but the present invention advantageously provides the ability to hook a single multilumen catheter to the patient for provision of an infusion regimen involving a number of drug solutions.
Therefore, only a single pump is required to provide an infusion of fluids to the patient. Using a multilumen catheter is especially advantageous where the drug solutions may not be mixed together and provided in a single tube. A further advantage of the present invention is that only a single sealing cap is required to close off the implanted catheter set. Prior art multilumen systems which have a number of single lumen catheters hanging from the patient would require a cap for each lumen. These prior art catheter sets are more bulky, are more susceptible to being pulled upon while a patient is dressing or undressing and are more noticeable under clothing.
-01 85977--14.Of course, it should be understood that various changes-c8 modifications to the preferred embodiment described above i1l be apparent to those skilled in the art. For example, a srapping mechanism may be used to replace the screwable locking ring of the multilumen locking connector. Also, any appropriate number of lumens may be used, the.invention is not restricted to the four shown. These and other changes can be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims.
01 85977 | | Assignee/Applicant: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee/Applicant First: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | Tai, Henry T., Dr. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | Tai, Henry T., Dr. | | Inventor - w/address: Brown Eric W.,Redondo Beach California 90277,US | Tai Henry T. Dr.,Pacific Palisades California 90272,US | | Inventor Count: 2 | | Attorney/Agent: Prüfer, Lutz H. | | Attorney/Agent - w/Address: Prüfer Lutz H.|Harthauser Strasse 25d, 81545 München, DE|00038291 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A1 | | Publication Date: 1986-07-02 | | Publication Month: 07 | | Publication Year: 1986 | | Application Number: EP1985115318A | | Application Country: EP | | Application Date: 1985-12-03 | | Application Month: 12 | | Application Year: 1985 | | Application with US Provisional: EP1985115318A | 1985-12-03 | | Priority Number: US1984678481A | US1985795906A | | Priority Country: US | US | | Priority Date: 1984-12-05 | 1985-11-07 | | Priority Date - Earliest: 1984-12-05 | | Priority Month: 12 | 11 | | Priority Year(s): 1984 | 1985 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000100, A61M0005158, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000100
| A
| A61
| A61M
| A61M0001
| A61M000100
|
A61M0005158
| A
| A61
| A61M
| A61M0005
| A61M0005158
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| A61M 39/0247
A61M 5/1582
A61M 39/10
| A61M 2039/1077
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003902T, A61M0005158B, A61M003910, K61M003910W | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
WO1983000812A1
| 1983-03-17
| STRAESSLE Rudolf N.
| ARS PRO MEDICO AG
| X
| 0 (Examiner)
|
| Title: CONNECTION DEVICE FOR A CONDUIT FOR MEDICAL USE |
| |
FR2436321A1
| 1980-04-11
| -
| STERIMED GMBH
| A
| 0 (Examiner)
|
| Title: ELEMENT DE RACCORDEMENT DESTINE, D'UNE PART, A UN TUYAU PROLONGATEUR RELIE A UN FLACON ASPIRATEUR AU DISPOSITIF SIMILAIRE, ET, D'AUTRE PART, A UN TUYAU DE DRAINAGE |
| |
US4327722A
| 1982-05-04
| Groshong LeRoy E.
| GROSHONG LEROY E
| A
| 0 (Examiner)
|
| Title: Methods and apparatus for intravenous therapy and hyperalimentation |
| |
EP33080A2
| 1981-08-05
| Brauner Holger Dr.
| ASID BONZ & SOHN GMBH
| Y
| 0 (Examiner)
|
| Title: Flexible tube system for dialysis |
| |
US3805794A
| 1974-04-23
| Schlesinger Robert M.
| SCHLESINGER R
| X
| 0 (Examiner)
|
| Title: ANTEGRADE-RETROGRADE RETENTION CATHETER |
| |
DE3005964A1
| 1981-08-27
| Neitemann Bernhard
| BERGIN GMBH
| Y
| 0 (Examiner)
|
| Title: Mehradrige Schlauchleitung, insbesondere Hochdruckschlauchleitung fuer den untertaegigen Bergbau |
| |
| | Count of Cited Refs - Patent: 6 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
EP370158A1
| 1990-05-30
| MARTIN GEOFFREY S
|
| | Count of Citing Patents: 1 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
1990-06-20
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1989-11-24 |
| |
1988-07-13
| 17Q
| +
|
| Description: FIRST EXAMINATION REPORT 1988-02-09 |
| |
1987-03-04
| 17P
| +
|
| Description: REQUEST FOR EXAMINATION FILED 1986-12-24 |
| |
1986-07-02
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0185977 A1 CH; DE; FR; GB; IT; LI; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R CH;DE;FR;GB;IT;LI;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: RJ-DWDRAW 1989-11-24 1989 Deemed to be withdrawn | EX-REPORT 1988-02-09 1988 Dispatch of 1st examination report | EX-RQ 1986-12-24 1986 Request for examination | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP185977A1
| 19860702
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
US4581012A
| 19860408
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumencatheter set |
| |
US4701159A
| 19871020
| Brown Eric W.
| I FLOW CORP
|
| Title: Multilumen catheter set |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP185977A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP185977A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 29/43 | | EP241159A3 | MULTIPLE NEEDLE HOLDER AND SUBCUTANEOUS MULTIPLE CHANNEL INFUSION PORT | Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples | Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen | | Publication Number: EP241159A3 | | Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANEOUS MULTIPLE CHANNEL INFUSION PORT | Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples | Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen | | Title (Original): Multiple needle holder and subcutaneous multiple channel infusion port | Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples | Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen | | Title (English): Multiple needle holder and subcutaneous multiple channel infusion port | | Title (French): Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples | | Title (German): Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen | | Title (Spanish): | | Title - DWPI: | Abstract:
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | Abstract (English):
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I Flow Corporation,Torrance California 90505,US,00719121 | | Assignee/Applicant First: I Flow Corporation,Torrance California 90505,US,00719121 | | Assignee - Standardized: I-FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Torrance California 90505,US,00719121 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,Redondo Beach California 90277,US | | Inventor Count: 1 | | Attorney/Agent: Marlow, Nicholas Simon | | Attorney/Agent - w/Address: Marlow Nicholas Simon|Reddie & Grose 16, Theobalds Road, London WC1X 8PL, GB|00052991 | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A3 | | Publication Date: 1987-12-02 | | Publication Month: 12 | | Publication Year: 1987 | | Application Number: EP1987302265A | | Application Country: EP | | Application Date: 1987-03-17 | | Application Month: 03 | | Application Year: 1987 | | Application with US Provisional: EP1987302265A | 1987-03-17 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M003700, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M003700
| A
| A61
| A61M
| A61M0037
| A61M003700
|
A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0208
A61M 39/10
| A61M 2039/0211
A61M 2039/1072
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003902B, A61M003910, K61M003902B2, K61M003910V | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4581012A
| 1986-04-08
| Brown Eric W.
| I FLOW CORP
| YPD
| 0 (Examiner)
|
| Title: Multilumencatheter set |
| |
FR2138152A1
| 1972-12-29
| SCHMIDT E M
| PHILIPS NV
| A
| 0 (Examiner)
|
| |
FR2309242A1
| 1976-11-26
| -
| PISTOR MICHEL
| Y
| 0 (Examiner)
|
| Title: NOUVEL INSTRUMENT MEDICAL FORMANT SONDE-AIGUILLE ET REPARTITEUR EN COMPORTANT APPLICATION |
| |
GB2143134A
| 1985-02-06
| Martinez Felix Jesus
| RENAL SYSTEMS
| A
| 0 (Examiner)
|
| Title: Blood access device |
| |
US4557722A
| 1985-12-10
| Harris Donald L.
| CORDIS CORP
| A
| 0 (Examiner)
|
| Title: Fill port for an implantable dispensing system |
| |
| | Count of Cited Refs - Patent: 5 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
1991-09-18
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-03-26 |
| |
1989-11-23
| 17Q
| +
|
| Description: FIRST EXAMINATION REPORT 1989-10-10 |
| |
1988-04-06
| 17P
| +
|
| Description: REQUEST FOR EXAMINATION FILED 1988-02-03 |
| |
1987-12-02
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0241159 A3 AT; BE; CH; DE; ES; FR; GB; GR; IT; LI; LU; NL; SE |
| |
1987-11-11
| RHK1
| -
|
| Description: MAIN CLASSIFICATION (CORRECTION) |
| |
1987-10-14
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0241159 A2 AT; BE; CH; DE; ES; FR; GB; GR; IT; LI; LU; NL; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R AT;BE;CH;DE;ES;FR;GB;GR;IT;LI;LU;NL;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: RJ-DWDRAW 1991-03-26 1991 Deemed to be withdrawn | EX-RQ 1988-02-03 1988 Request for examination | EX-REPORT 1989-10-10 1989 Dispatch of 1st examination report | PS-AMEND 1991-09-18 1991 Patent Amended | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP241159A3
| 19871202
| Brown Eric W.
| I-FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
CA1264261A1
| 19900109
| BROWN ERIC W
| I FLOW CORP
|
| Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT |
| |
EP241159A2
| 19871014
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
JP62240069A
| 19871020
| ERITSUKU DABURIYU BURAUN
| FUROO CORP I
|
| Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS |
| |
US4695273A
| 19870922
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP241159A3&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP241159A3&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 30/43 | | EP241159A2 | Multiple needle holder and subcutaneous multiple channel infusion port. | Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen. | Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples. | Multiple needle holder and subcutaneous multiple channel infusion port | Mehrfach-Nadeltraeger und subkutaner Injektionskopf mit mehreren Durchlasskanaelen | Support pour plusieurs aiguilles et site d'injection sous-cutanee a canaux multiples | | Publication Number: EP241159A2 | | Title: Multiple needle holder and subcutaneous multiple channel infusion port. | Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen. | Support pour plusieurs aiguilles et site d'injection sous-cutanée à canaux multiples. | Multiple needle holder and subcutaneous multiple channel infusion port | Mehrfach-Nadeltraeger und subkutaner Injektionskopf mit mehreren Durchlasskanaelen | Support pour plusieurs aiguilles et site d'injection sous-cutanee a canaux multiples | | Title (Original): Mehrfach-Nadelträger und subkutaner Injektionskopf mit mehreren Durchlasskanälen. | Multiple needle holder and subcutaneous multiple channel infusion port | Mehrfach-Nadeltraeger und subkutaner Injektionskopf mit mehreren Durchlasskanaelen | Support pour plusieurs aiguilles et site d'injection sous-cutanee a canaux multiples | | Title (English): Multiple needle holder and subcutaneous multiple channel infusion port | | Title (French): Support pour plusieurs aiguilles et site d'injection sous-cutanee a canaux multiples | | Title (German): Mehrfach-Nadeltraeger und subkutaner Injektionskopf mit mehreren Durchlasskanaelen | | Title (Spanish): | | Title - DWPI: Multiple needle holder for multi-lumen catheter connector has housing mounting needles to align with lumens | Abstract:
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | Abstract (English):
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A multiple needle holder (10) and multiple channel subcutaneous infusion port (20) are disclosed. The multiple needle holder carries a plurality of needles (12) which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter (40). The multiple infusion port includes a septum (28) which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of the infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (Spanish): | Claims:
<sl><li>1. A multiple needle holder (10) comprising: a housing (11) having a rear face and a front face; a plurality of needles (12) secured within the housing and extending from the front face of the housing; a plurality of engagement ports (16) on the rear face of the housing each having an opening in communication with one of the needles. </li><li>2. A needle holder (10) according to claim 1 further comprising a flange (14) extending from the housing (11) for engaging a locking mechanism (52) on a multilumen catheter connector (50) having a plurality of ports matingly aligned with the engagement ports (16) on the rear face of the housing. </li><li>3. A needle holder (10) according to claim 1 or 2 in which the needles (12) are curved. </li><li>4. A needle holder (10) according to any preceding claim in the rear face of the housing (11) is perpendicular to the front face of the housing. </li><li>5. A multiple channel infusion port (20) comprising: a housing including a housing wall (32) and a base (26); a penetrable self-sealing septum (28) held within the housing and having an outer face adjacent at least one opening in the housing and an inner face on the opposite side of the septum from the outer face; a plurality of isolated chambers (30) adjacent the inner face of the septum; a sealing wall (34) separating each of the isolated chambers from one another; and a plurality of access tubes (36) each in communication with one of the isolated chambers for conducting fluid out of the isolated chambers. </li><li>6. A multiple channel infusion port (20) according to claim 5 further comprising a multilumen catheter (60), each lumen of the catheter being in communication with one of the access tubes (36). </li> <li>7. A multiple channel infusion port (20) according to claim 5 or 6 further comprising slots (24) in the base (26) of the housing for enabling sutures (22) to be applied therethrough. </li><li>8. A multiple channel infusion port (20) according to any of claims 5 to 7 in which the housing includes a top portion having solid portions overlying the sealing wall (34) and openings superimposed over the chambers (30). </li> <li>9. A multiple needle holder and infusion port comprising: a multiple needle holder (10) according to any of claims 1 to 4; and an infusion port (20) having a plurality of isolated chambers (30) beneath a self- sealing septum (28) such that when the needles (12) of the needle holder penetrate through the septum each needle is in communication with a different one of the chambers. </li><li>10. A multiple needle holder and infusion port according to claim 9 in which the infusion port (20) is according to any of claims 5 to 8. </li></sl> | | Claims Count: 1 | Claims (English):
<sl><li>1. A multiple needle holder (10) comprising: a housing (11) having a rear face and a front face; a plurality of needles (12) secured within the housing and extending from the front face of the housing; a plurality of engagement ports (16) on the rear face of the housing each having an opening in communication with one of the needles. </li><li>2. A needle holder (10) according to claim 1 further comprising a flange (14) extending from the housing (11) for engaging a locking mechanism (52) on a multilumen catheter connector (50) having a plurality of ports matingly aligned with the engagement ports (16) on the rear face of the housing. </li><li>3. A needle holder (10) according to claim 1 or 2 in which the needles (12) are curved. </li><li>4. A needle holder (10) according to any preceding claim in the rear face of the housing (11) is perpendicular to the front face of the housing. </li><li>5. A multiple channel infusion port (20) comprising: a housing including a housing wall (32) and a base (26); a penetrable self-sealing septum (28) held within the housing and having an outer face adjacent at least one opening in the housing and an inner face on the opposite side of the septum from the outer face; a plurality of isolated chambers (30) adjacent the inner face of the septum; a sealing wall (34) separating each of the isolated chambers from one another; and a plurality of access tubes (36) each in communication with one of the isolated chambers for conducting fluid out of the isolated chambers. </li><li>6. A multiple channel infusion port (20) according to claim 5 further comprising a multilumen catheter (60), each lumen of the catheter being in communication with one of the access tubes (36). </li> <li>7. A multiple channel infusion port (20) according to claim 5 or 6 further comprising slots (24) in the base (26) of the housing for enabling sutures (22) to be applied therethrough. </li><li>8. A multiple channel infusion port (20) according to any of claims 5 to 7 in which the housing includes a top portion having solid portions overlying the sealing wall (34) and openings superimposed over the chambers (30). </li> <li>9. A multiple needle holder and infusion port comprising: a multiple needle holder (10) according to any of claims 1 to 4; and an infusion port (20) having a plurality of isolated chambers (30) beneath a self- sealing septum (28) such that when the needles (12) of the needle holder penetrate through the septum each needle is in communication with a different one of the chambers. </li><li>10. A multiple needle holder and infusion port according to claim 9 in which the infusion port (20) is according to any of claims 5 to 8. </li></sl> | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
<sl><li>1. A multiple needle holder (10) comprising: a housing (11) having a rear face and a front face; a plurality of needles (12) secured within the housing and extending from the front face of the housing; a plurality of engagement ports (16) on the rear face of the housing each having an opening in communication with one of the needles. </li><li>2. A needle holder (10) according to claim 1 further comprising a flange (14) extending from the housing (11) for engaging a locking mechanism (52) on a multilumen catheter connector (50) having a plurality of ports matingly aligned with the engagement ports (16) on the rear face of the housing. </li><li>3. A needle holder (10) according to claim 1 or 2 in which the needles (12) are curved. </li><li>4. A needle holder (10) according to any preceding claim in the rear face of the housing (11) is perpendicular to the front face of the housing. </li><li>5. A multiple channel infusion port (20) comprising: a housing including a housing wall (32) and a base (26); a penetrable self-sealing septum (28) held within the housing and having an outer face adjacent at least one opening in the housing and an inner face on the opposite side of the septum from the outer face; a plurality of isolated chambers (30) adjacent the inner face of the septum; a sealing wall (34) separating each of the isolated chambers from one another; and a plurality of access tubes (36) each in communication with one of the isolated chambers for conducting fluid out of the isolated chambers. </li><li>6. A multiple channel infusion port (20) according to claim 5 further comprising a multilumen catheter (60), each lumen of the catheter being in communication with one of the access tubes (36). </li> <li>7. A multiple channel infusion port (20) according to claim 5 or 6 further comprising slots (24) in the base (26) of the housing for enabling sutures (22) to be applied therethrough. </li><li>8. A multiple channel infusion port (20) according to any of claims 5 to 7 in which the housing includes a top portion having solid portions overlying the sealing wall (34) and openings superimposed over the chambers (30). </li> <li>9. A multiple needle holder and infusion port comprising: a multiple needle holder (10) according to any of claims 1 to 4; and an infusion port (20) having a plurality of isolated chambers (30) beneath a self- sealing septum (28) such that when the needles (12) of the needle holder penetrate through the septum each needle is in communication with a different one of the chambers. </li><li>10. A multiple needle holder and infusion port according to claim 9 in which the infusion port (20) is according to any of claims 5 to 8. </li></sl> | | Independent Claims: | Description:
This invention relates to devices for providing infusions of a plurality of fluids repeatably to a patient. In particular, the invention relates to a multiple needle holder and subcutaneous multiple channel infusion port.
Implantable vascular access devices are well known in the art. A conventional implantable port includes a single reservoir having a catheter attached thereto. The catheter is fed into a blood vessel in a patient's body. Fluid injected into the reservoir of the implanted port flows through the catheter and into the blood stream. The infusion port is implanted beneath the skin of the patient. The top of the port has a septum which is penetrable by a hypodermic needle. Thus, conventional injections of medicament into a patient having an implanted port are made by inserting a needle through the patient's skin and through the septum in the infusion port. Fluid is injected through the needle and into the reservoir of the port where it passes into the catheter and out into the blood stream.
Experimentation and advances in medicine are creating new needs for infusing more than a single fluid into a patient. There are many applications for which there is a need for intravenous administration of a plurality of fluid solutions. One such application is the use of chemotherapy to treat such diseases as cancer. Attempts at providing more advanced chemotherapy regimens involving the intravenous administration of a multiplicity of drug solutions are being inhibited by a lack of equipment to simplify such a procedure. The use of implanted infusion ports for delivering drug solutions to a patient are desirable since they deliver the fluid solution directly into the blood stream where it is quickly delivered throughout the body.
A dual reservoir double lumen implantable vascular access port is presently available. This dual lumen implantable port made available by Cormed, Inc. of Medina, New York has two separate stainless steel reservoirs mounted in a silicone rubber base. Each reservoir is connected to an individual branch of a double lumen catheter. Each reservoir has its own septum through which a needle may be inserted to inject fluid into a patient. This dual lumen port has the limitation of only allowing for the injection of two fluids simultaneously. A further disadvantage of this device is that, when used for continuous infusion, two separate catheters would hang from the patient, each connected to one of two needles.
This invention is directed to a multiple needle holder adapted for engagement with a multilumen locking connector and a subcutaneous multiple channel infusion port.
According to the multiple needle holder of the present invention, a plurality of needles extend from the front face of a housing. At the rear of the housing are a plurality of inlet openings each opening provided in a separate engagement port. Preferably, the flange extends from the housing for engagement with a locking ring on a multilumen locking connector. Each lumen of the multilumen connector engages one of the engagement ports at the rear of the housing of the needle holder. Each of the needles on the needle holder is in communication with an inlet opening at the rear of the housing. Thus, upon connection to a multilumen catheter each needle is in communication with one of the lumens of that catheter.
Also in accordance with the present invention, a multiple channel subcutaneous infusion port provides a plurality of isolated chambers. A penetrable septum overlies the isolated chambers. A multilumen catheter is connected to the infusion port and extends therefrom. Each lumen of the multilumen catheter is connected to a different one of the isolated chambers by a chamber access tube. Each isolated chamber is adjacent the inner surface of the septum such that a plurality of needles aligned in parallel can be inserted through the septum, each needle entering a different one of said isolated chambers.
It is an advantage of the present invention that it provides a single implantable port which can be used in the injection of a plurality of fluid solutions. It is a further advantage of the present invention that it keeps each of the plurality of fluids solutions being injected into the port isolated from one another until the fluid reaches the blood stream. The present invention advantageously provides for infusion of a plurality of fluids into an implanted infusion port through the use of a single catheter and needle holding device.
Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings, in which:- <sl><li>FIG. 1 is a plan view in partial cross-section of the needle holder and infusion port of the present invention as they would appear in use on a patient; </li><li>FIG. 2 is a top view of the multiple channel subcutaneous infusion port of the present invention; </li><li>FIG. 3 is a side view of the infusion port of FIG. 2; </li><li>FIG. 4 is a cross-sectional view of the needle holder of the present invention and a multilumen locking connector; and </li><li>FIG. 5 is a rear plan view of the needle holder of the FIG. 4. </li></sl>
Referring now to the drawings, FIGS. 1 to 3 shows a multiple channel needle holder 10 with its needles 12 inserted into a multiple channel subcutaneous infusion port 20. The infusion port 20 is implanted within the layer of fatty tissue 23 underneath the skin surface 21. Sutures 22 hold the infusion port to the muscle wall 25 beneath the fatty tissue. The sutures 22 are applied through slots 24 distributed around the edge portion of a base 26 of the infusion port 20. The needles 12 penetrate a septum 28 at the top portion of the infusion port and extend through into a plurality of isolated chambers 30. The drawings show a needle holder and multichannel infusion port with four needles and isolated chambers respectively, however, it should be understood that the invention is not limited to any specific number of needles or chambers.
The needle holder 10 is shown attached to a multilumen catheter 40 by a multilumen locking connector 50. A multilumen locking connector which may be used in conjunction with the needle holder of the present invention is decribed in U.S. Patent No. 4,581,012. The disclosure of said patent is hereby incorporated by reference herein. As shown in FIG. 1, the locking connector 50 includes a locking ring 52 which engages a flange 14 on the outside of the housing of the needle holder 10. FIG. 1 shows the locking ring 52 prior to engagement with the flange 14.
In operation, individual fluid solutions are passed through each lumen of the multilumen catheter 40 into the needle holder 10 where they are injected through the needles 12 into the isolated chambers 30 of the infusion port 20. The fluids continue out of the infusion port 20 through a subcutaneous multilumen catheter 60. Each fluid solution thus remains isolated from each of the other fluid solutions until it reaches the blood stream at the end of the catheter 60.
Referring now to FIGS. 2 and 3, the multichamber subcutaneous infusion port is discussed in greater detail. The housing of the port includes a housing wall 32 resting upon the base 26 of the port. Located within the housing are sealing walls 34 which isolate each chamber 30 from one another and a septum 28 which overlies the sealing walls 34 to enclose the chambers 30. A silicon gasket may be placed between sealing walls 34 and base 26 to aid in sealing the chambers. The housing wall 32, base 26 and sealing walls 34 are preferably made out of stainless steel. The inner face of the septum 28 is adjacent the chambers 30 and is on the opposite side of the septum from an outer face which is exposed through the top of the housing. The septum 28 is made of a penetrable self sealing material, typically silicone. A multilumen catheter 60 is connected to the infusion port 20 through a hole in the housing. Each lumen of the multilumen catheter is in communication with a chamber access tube 36. There is a chamber access tube 36 for each lumen. Each chamber access tube 36 is in communication with a different one of the isolated chambers 30 for conducting fluid out its respective chamber. In the preferred embodiment shown, the hole in the housing is adjacent two chambers 30. The access tubes 36 for these chambers feed immediately into the multilumen catheter 60. A conduit 37 through a sealing wall 34 provides space for the two other access tubes 36 which extend into their respective chamber 30 near the centre of the infusion port 20.
In the preferred embodiment, press fit assembly pins 38 hold the housing wall 32 to the base 50. The top portion of the housing 32 holds the septum 28 in place over the sealing walls 34. The top portion of the housing can be shaped as the sealing walls 34 to provide solid portions over the sealing walls and openings superimposed over said chambers so that a needle injected into the septum 28 will be inserted into a chamber 30 rather than a sealing wall 34. Slots 24 are provided about the periphery of the base 26. Sutures may be applied through the slots to hold the infusion port in place within the patients body.
The needle holder 10 of the present invention shall now be described with reference to FIGS. 4 and 5. The needle holder 10 of FIG. 4 is shown with curved needles 12. The needle holder is made with a housing 11, preferably made from plastic. Curved needles are an alternative to the straight needles shown in FIG. 1. Curved needles advantageously hold more securely onto an infusion port. The needles 12 are secured within the housing 11 by a conventional bonding technique, such as gluing or potting. The insertion end of the needles extend out from the front face of the housing 11. The needles 12 are in fluid communication with the inlet openings 18 at the rear face of the housing 11. Each of the openings 18 is located within an engagement port 16. In the embodiment shown the engagement port 16 are female connectors for engagement with the male connectors of a multilumen catheter connector 50. It would be equally possible to interchange this arrangement and provide male engagement ports 16 on the needle holder 10 and female connectors on the multilumen catheter connector 50. A flange 14 extends from the needle holder 10 for engaging the multilumen locking connector 50. As shown in FIG. 4, the multilumen locking connector 50 includes a locking ring 52 which has a threaded interior. The threaded interior engages the flange 14 and allows the connector to be screwed tightly onto the needle holder. The combination of multilumen catheter 40, multilumen catheter connector 50 and needle holder 10 provide four individual passageways for four separate fluid solutions.
The needle holder may be changed so that the front face and rear face of the needle holder housing are perpendicular to each other. This would advantageously allow the external catheter 40 to lie flat against a patient's body when the needle holder 10 is inserted into the infusion port 10.
Of course, it should be understood that various other changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. For example, the subcutaneous catheter can be connected to the infusion port through the base instead of the housing. | | Assignee/Applicant: I-Flow Corporation,US,00719121 | | Assignee/Applicant First: I-Flow Corporation,US,00719121 | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I-Flow Corporation | | Assignee - Original w/address: I-Flow Corporation,US,00719121 | | Assignee Count: 1 | | Inventor: Brown, Eric W. | | Inventor First: Brown, Eric W. | | Inventor - Original: Brown, Eric W. | | Inventor - w/address: Brown Eric W.,US | | Inventor Count: 1 | | Attorney/Agent: Marlow, Nicholas Simon, et al | | Attorney/Agent - w/Address: Marlow Nicholas Simon et al|Reddie & Grose 16, Theobalds Road, London WC1X 8PL, GB | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A2 | | Publication Date: 1987-10-14 | | Publication Month: 10 | | Publication Year: 1987 | | Application Number: EP1987302265A | | Application Country: EP | | Application Date: 1987-03-17 | | Application Month: 03 | | Application Year: 1987 | | Application with US Provisional: EP1987302265A | 1987-03-17 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M003700, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M003700
| A
| A61
| A61M
| A61M0037
| A61M003700
|
A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0208
A61M 39/10
| A61M 2039/0211
A61M 2039/1072
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003902B, A61M003910, K61M003902B2, K61M003910V | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
GB2143134A
| 1985-02-06
| Martinez Felix Jesus
| RENAL SYSTEMS
| A
| 0 (Examiner)
|
| Title: Blood access device |
| |
US4557722A
| 1985-12-10
| Harris Donald L.
| CORDIS CORP
| A
| 0 (Examiner)
|
| Title: Fill port for an implantable dispensing system |
| |
FR2138152A1
| 1972-12-29
| SCHMIDT E M
| PHILIPS NV
| A
| 0 (Examiner)
|
| |
US4581012A
| 1986-04-08
| Brown Eric W.
| I FLOW CORP
| YPD
| 0 (Examiner)
|
| Title: Multilumencatheter set |
| |
FR2309242A1
| 1976-11-26
| -
| PISTOR MICHEL
| Y
| 0 (Examiner)
|
| Title: NOUVEL INSTRUMENT MEDICAL FORMANT SONDE-AIGUILLE ET REPARTITEUR EN COMPORTANT APPLICATION |
| |
| | Count of Cited Refs - Patent: 5 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
AU198935555A
| 1989-11-24
| THEREX CORP
|
AU199342645A
| 1993-11-29
| CHRONOTEC SARL
|
AU623653B2
| 1992-05-21
| THEREX CORP
|
AU623653B
| 1992-05-21
| Therex Corporation
|
AU668182B
| 1996-04-26
| CHRONOTEC SARL
|
AU668182B
| -
| -
|
DE102011013889A1
| 2012-09-13
| STORZ KARL GMBH & CO KG
|
EP412994B1
| 1992-11-19
| THEREX CORPORATION
|
EP446202B1
| 1994-12-14
| THEREX CORP
|
EP594835B1
| 1996-09-11
| CHRONOTEC SARL
|
FR2690625A1
| 1993-11-05
| CHRONOTEC
|
US4955861A
| 1990-09-11
| THEREX CORP
|
WO1989010149A2
| 1989-11-02
| THEREX CORP
|
WO1989010157A1
| 1989-11-02
| THEREX CORP
|
WO1993021988A1
| 1993-11-11
| CHRONOTEC SARL
|
| | Count of Citing Patents: 15 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
1991-09-18
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1991-03-26 |
| |
1989-11-23
| 17Q
| +
|
| Description: FIRST EXAMINATION REPORT 1989-10-10 |
| |
1988-04-06
| 17P
| +
|
| Description: REQUEST FOR EXAMINATION FILED 1988-02-03 |
| |
1987-12-02
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0241159 A3 AT; BE; CH; DE; ES; FR; GB; GR; IT; LI; LU; NL; SE |
| |
1987-11-11
| RHK1
| -
|
| Description: MAIN CLASSIFICATION (CORRECTION) |
| |
1987-10-14
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0241159 A2 AT; BE; CH; DE; ES; FR; GB; GR; IT; LI; LU; NL; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R AT;BE;CH;DE;ES;FR;GB;GR;IT;LI;LU;NL;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP241159A2
| 19871014
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
CA1264261A1
| 19900109
| BROWN ERIC W
| I FLOW CORP
|
| Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT |
| |
EP241159A3
| 19871202
| Brown Eric W.
| I-FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
JP62240069A
| 19871020
| ERITSUKU DABURIYU BURAUN
| FUROO CORP I
|
| Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS |
| |
US4695273A
| 19870922
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP241159A2&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP241159A2&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 31/43 | | CA1264261A1 | MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Publication Number: CA1264261A1 | | Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (Original): PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (English): MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT | | Title (French): PORTE-AIGUILLES ET APPAREIL D'INJECTION SOUS-CUTANEE A PLUSIEURS VOIES | | Title (German): | | Title (Spanish): | | Title - DWPI: Multiple needle holder for multi-lumen catheter connector has housing mounting needles to align with lumens | Abstract:
A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | Abstract (English):
A multiple needle holder and multiple channel subcutaneous infusion port are disclosed. The multiple needle holder carries a plurality of needles which are each in separate fluid communication with a lumen of a plurality of lumens in a multilumen catheter. The multiple infusion port includes a septum which overlies a plurality of isolated chambers. Each chamber is accessed by a tube which connects to a different lumen of a subcutaneous multilumen catheter. When the needles of said needle holder are inserted through the septum of said infusion port each of said needles is in communication with a different one of said isolated chambers. | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I FLOW CORP | | Assignee/Applicant First: I FLOW CORP | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: CA | | Publication Kind Code: A1 | | Publication Date: 1990-01-09 | | Publication Month: 01 | | Publication Year: 1990 | | Application Number: CA532537A | | Application Country: CA | | Application Date: 1987-03-19 | | Application Month: 03 | | Application Year: 1987 | | Application with US Provisional: CA532537A | 1987-03-19 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M003700, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M003700
| A
| A61
| A61M
| A61M0037
| A61M003700
|
A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0208
A61M 39/10
| A61M 2039/0211
A61M 2039/1072
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003902B, A61M003910, K61M003902B2, K61M003910V | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1992-07-11
| MKLA
| -
|
| Description: LAPSED |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
CA1264261A1
| 19900109
| BROWN ERIC W
| I FLOW CORP
|
| Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT |
| |
EP241159A2
| 19871014
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
EP241159A3
| 19871202
| Brown Eric W.
| I-FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
JP62240069A
| 19871020
| ERITSUKU DABURIYU BURAUN
| FUROO CORP I
|
| Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS |
| |
US4695273A
| 19870922
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=CA1264261A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=CA1264261A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 32/43 | | JP62240069A | MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS | | Publication Number: JP62240069A | | Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS | | Title (Original): | | Title (English): MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: | Abstract:
| | Abstract (English): | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: FUROO CORP I | | Assignee/Applicant First: FUROO CORP I | | Assignee - Standardized: FUROO CORP I | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: ERITSUKU DABURIYU BURAUN | | Inventor First: ERITSUKU DABURIYU BURAUN | | Inventor - Original: | | Inventor - w/address: ERITSUKU DABURIYU BURAUN | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: JP | | Publication Kind Code: A | | Publication Date: 1987-10-20 | | Publication Month: 10 | | Publication Year: 1987 | | Application Number: JP198781363A | | Application Country: JP | | Application Date: 1987-04-03 | | Application Month: 04 | | Application Year: 1987 | | Application with US Provisional: JP198781363A | 1987-04-03 | | Priority Number: US1986849408A | | Priority Country: US | | Priority Date: 1986-04-08 | | Priority Date - Earliest: 1986-04-08 | | Priority Month: 04 | | Priority Year(s): 1986 | | Earliest Priority Year: 1986 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M000500, A61M003700, A61M003902, A61M003910 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M000500
| A
| A61
| A61M
| A61M0005
| A61M000500
|
A61M003700
| A
| A61
| A61M
| A61M0037
| A61M003700
|
A61M003902
| A
| A61
| A61M
| A61M0039
| A61M003902
|
A61M003910
| A
| A61
| A61M
| A61M0039
| A61M003910
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 39/0208
A61M 39/10
| A61M 2039/0211
A61M 2039/1072
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M003902B, A61M003910, K61M003902B2, K61M003910V | | Locarno Class: | | JP F Terms: 4C066: AA09; BB01; CC01; FF01; JJ04; LL12
4C067
4C167: AA02; AA75; BB18; BB26; CC05; CC08; DD10; GG02; GG14; GG16; GG22
| | JP FI Codes: | A61M000500-300 | A61M003700 | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
JP05112343B2
| 2013-01-09
| RENISHAW IRELAND LTD
|
JP05529541B2
| 2014-06-25
| RENISHAW IRELAND LTD
|
JP2009529936A
| 2009-08-27
| -
|
JP2010510016A
| 2010-04-02
| -
|
US8974422B2
| 2015-03-10
| STREATFIELD GILL STEVEN
|
| | Count of Citing Patents: 5 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: JA | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
JP62240069A
| 19871020
| ERITSUKU DABURIYU BURAUN
| FUROO CORP I
|
| Title: MULTINEEDLE HOLDER AND MULTIPLE FLOW CHANNEL TYPE INJECTION PORT APPARATUS |
| |
CA1264261A1
| 19900109
| BROWN ERIC W
| I FLOW CORP
|
| Title: MULTIPLE NEEDLE HOLDER AND SUBCUTANOEUS MULTIPLE CHANNEL INFUSION PORT |
| |
EP241159A2
| 19871014
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
EP241159A3
| 19871202
| Brown Eric W.
| I-FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
US4695273A
| 19870922
| Brown Eric W.
| I FLOW CORP
|
| Title: Multiple needle holder and subcutaneous multiple channel infusion port |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP62240069A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP62240069A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 33/43 | | EP182900A1 | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS. | VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN. | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES. | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN | | Publication Number: EP182900A1 | | Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS. | VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN. | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES. | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN | | Title (Original): VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN. | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN | | Title (English): METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | | Title (French): PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | | Title (German): VERFAHREN ZUR AUFEINANDERFOLGENDEN INTRAVENÖSEN INFUSION MEHRERER FLÜSSIGKEITEN | | Title (Spanish): | | Title - DWPI: Sequential intravenous solns. admin. method by sepg. two solns. in catheter by predetermined amt. of spacer soln. | Abstract:
From corresponding WO1986000022A1
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing.
From corresponding WO1986000022A1
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | Abstract (English):
From corresponding WO1986000022A1
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing. | Abstract (French):
From corresponding WO1986000022A1
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | | Abstract (German): | Abstract (Original):
From corresponding WO1986000022A1
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing.
From corresponding WO1986000022A1
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | | Abstract (Spanish): | Claims:
From corresponding WO1986000022A1
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim I further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamberr said spacer solution fills a cylindrical cross-section of said tube having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim I wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
-6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tubey said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said tube between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pump, the volume of said tube filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber.
11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises- a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution.
AMENDED CLAIMS
[received by the International Bureau on 14 October 1985 (14-10-85); original claims 1-4 and 8-10 amended; other claims unchanged (3 pages)] 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through a lumen of said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said lumen of said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution such that said first and second fluid solutions are simultaneously in transit through said lumen of said catheter tube, said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim 1 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said lumen of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a tyringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamber, said spacer solution fills a cylindrical cross-section of said lumen having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim 1 wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said lumen of said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering two of said fluid solutions and a neutral spacer solution the-rebetween through a single lumen of said catheter tube, the amount of said neutral spacer solution adminstered between said two fluid solutions being large enough to prevent the fluid solutions on opposite sides of said neutral space"r solution within said catheter tube from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said lumen between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pumpr the volume of said lumen filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber. 11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution. | | Claims Count: 13 | Claims (English):
From corresponding WO1986000022A1
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim I further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamberr said spacer solution fills a cylindrical cross-section of said tube having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim I wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
-6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tubey said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said tube between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pump, the volume of said tube filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber.
11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises- a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution.
AMENDED CLAIMS
[received by the International Bureau on 14 October 1985 (14-10-85); original claims 1-4 and 8-10 amended; other claims unchanged (3 pages)] 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through a lumen of said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said lumen of said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution such that said first and second fluid solutions are simultaneously in transit through said lumen of said catheter tube, said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim 1 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said lumen of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a tyringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamber, said spacer solution fills a cylindrical cross-section of said lumen having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim 1 wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said lumen of said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering two of said fluid solutions and a neutral spacer solution the-rebetween through a single lumen of said catheter tube, the amount of said neutral spacer solution adminstered between said two fluid solutions being large enough to prevent the fluid solutions on opposite sides of said neutral space"r solution within said catheter tube from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said lumen between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pumpr the volume of said lumen filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber. 11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
From corresponding WO1986000022A1
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing. | Independent Claims:
From corresponding WO1986000022A1
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another. | Description:
From corresponding WO1986000022A1
M ETH OD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS
Background of the Invention This invention relates to the intravenous administration of multiple fluids.
There are many medical applications for which an intravenous infusion for a multiplicity of fluid solutions can be beneficial. One such application is chemotherapy infusions used in cancer treatment. This was recognized in the recent 13th Annual Cancer Courser given March 1-3. 1984, by the Harvard Medical School and New England Deaconess Hospital. In the syllabus article entitled "Multi-Drug Infusion Chemotherapy: the Delivery of Two or More Drugs Simultaneously"r Dr. Jacob J. Lokich described techniques for mixing drug solutions to form a combination which can be delivered to a patient by continuous intravenous infusion. The use of combination multi-drug chemotherapy has been developing in medicine since the 1960's. It has been used for such diseases as acute leukemiar Hodgkins disease, lung cancer, breast cancer and ovarian cancer. Unfortunately, there are only a limited number of drug combinations which have been found to be compatible and stable and which can produce a synergistic effect when administered.
There are many drugs which may not be used simultaneously because of reactions between the drugs which make infusion impracticable or undesirable.
Some drugs react and thereby neutralize one another.
Other drugs react to form precipitates which may clog the catheter tubing or even worse cause an embolism in the patient. Thusr according to present multi-drug combination treatmentst physicians are limited in their choice of drug solutions.
Summary-of the invention This invention is directed to a method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution through a catheter tube followed by the contiguous administration of a predetermined amount of spacer solution. The spacer solution is then contiguously followed by a second fluid solution. The amount of spacer solution which would be used between fluid solutions would be prescribed by the physician and should be large enough to prevent the first and second fluid solutions from substantially mixing.
The method of the present invention enormously increases the number of variations available to physicians for treating cancer and other diseases with multiple drug infusions. Since the intravenous spacer solution prevents the drug solutions from substantially mixing with one another before entering the body, drug solutions which were formerly incompatible because of deleterious reactions may now be tried as potentially beneficial treatments. Once a drug solution is infused into the patient the blood stream carries - the drug away so quickly that it is usually safe to follow the drug solution with another solution after the spacer. By sequentially alternating between drug solutions and spacer solutions many new multiple drug treatments may be developed. Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
Brief DescriRtion of -the Drawinas FIG. 1 is an elevational view of an apparatus for performing the method of the present invention.
FIG. 2 is a sectional view of the catheter tube of FIG. 1 demonstrating the method of the present invention. FIG. 3 is a cross-sectional view of the catheter tube of FIG. 1 after the spacer solution has been pumped through a length of catheter tubing.
FIG. 4 is an elevational view of a peristaltic pump for use in the method of the present invention.
FIG. 5 is an elevational view of a syringe-type cartridge pump for use in the method of the present invention. Detailed DescriT)tion of the Preferred Embodiments Turning now to the drawings, FIG. 1 illustrates an apparatus for performing the method of the present invention. The apparatus is described in the inventors' copending application U.S. Serial No. 619,847, entitled "Apparatus and Method for Administering Multiple Fluid Infusions", sharing the same filing date and assignee as the present invention. the inventors' copending application is hereby incorporated by reference herein. Their apparatus enables one to switch between different fluid solutions being intravenously administered through a catheter tube without allowing any air bubbles to enter into the line. A valve receives inputs from a plurality of fluid solution sources and has a primary input for a spacer solution 10 source, The valve switches between sources to alternately provide one of the fluid solutions and the spacer solution 10.
According to the method of the present invention, the spacer solution 10 is provided for substantially isolating the different fluid solutions during intravenous administration. FIG. 2 shows a first solution 12 and a second solution 14 separated by the spacer solution 10. The solutions are carried by a catheter tube 20 through a needle and into a patient.
Pump P keeps the fluids moving through the catheter tube 20 at a predetermined rate. The spacer solution must be a solution which is suitable for intravenous infusion into a patient. The spacer 10 must also be neutral with respect to each of the fluid solutions on either side of it. In other words, the spacer solution 10 must not substantially react with either the first fluid solution 12 or the second fluid solution 14 while it is traveling through the catheter tube 20 into the patient. Some solutions may react with one another over a long period of time, however, it is only necessary that there be no adverse reactions prior to the infusion.
There are a number of intravenous solutions which may be selected as the neutral spacer 10, including but not.limited to saline solutions, dextrose solutions and intravenous lipid solutions. The appropriate spacer solution 10 should be selected according to a patient's needs. For example, a patient requiring nutritional supplement may receive a high concentration dextrose solution as the spacer, whereas a patient merely requiring liquids may receive a saline solution or a low concentration dextrose solution. The volume of the spacer solution 10 affects the rate of mixing between the fluid solutions on adjoining sides of the spacer. A spacer with a low volume would have a tendency to allow the adjoining fluids to diffuse more quickly into each other. On the other handr a spacer with a larger volume would decelerate the rate of diffusion of adjoining drug solutions into each other.
The volume of the spacer solution must be selected so as to avoid substantial mixing between the fluid solutions on either side of the spacer solution 10 in the time that the solutions are in transit within the catheter tube 20. If the diffusion rate between a fluid solution and the spacer solution 10 is rapid, the spacer solution 10 must have a greater volume to avoid mixing of the two isolated fluid solutions.
Some insubstantial mixing may be allowed where the first drug solution 12 and the second drug solution 14 are relatively compatible with one another and will not react when in contact to a small extent. For more highly reactive fluid solutions, any amount of mixing would be substantial and must be prevented. Thus, the appropriate volume of spacer 10 depends on a variety of factors.
Because of laminar flow which occurs during the movement of fluids through the catheter tube 20F the type of pump being used will also be determinative of the minimum volume of spacer solution 10 required to separate the first and second fluid solutions.
Referring now to FIG. 3r the affects of laminar flow of fluids as they travel through the catheter tube 20 is shown. There is friction between the walls of the catheter tube 20 and the fluids which are flowing through it. This friction slows the outer layers of fluid. Thus, the fastest flowing fluid is found along the center axis of the catheter tube 20. Over a period of travel through the tube the spacer solution develops a convex pointed front sided and a concave indented rear side. The volume of spacer solution 10 must be prescribed to be large enough so that the rear edge of the first fluid solution 12 does not substantially overlap the leading front point of fluid solution 14. A cross-section showing such an overlap is illustrated in FIG. 3 at cross-section 16. A peristaltic pump 30, illustrated in FIG. 4f operates by squeezing the catheter tube 20. If there is a cross-section 16 including the first and second fluid solutions as they reach the peristaltic pump 30, upon being squeezed by pump 30 the two solutions would be in direct contact as a result of the pump action.
Therefore, it is important that when using a peristaltic pump 30 that there be a cross-section 17 maximally filled with spacer solution 10 as the spacer solution reaches the peristaltic pump 30.
A syringe-type cartridge pump 40,, also known as volumetric pump, illustrated in FIG. 5 works in a different manner. The cartridge pump 40 operates by filling and emptying a chamber 42. A valve 44 rotates to switch between a filling and an emptying position.
To prevent substantial mixing between fluid solution 12 and second fluid solution 14, it is again necessary to prescribe a sufficient volume of spacer solution 10 to substantially isolate the two fluid solutions. Toaccomplish this, the spacer solution 10 should encompass a volume which fills a cylindrical cross-section 19 of the tube which is equal to or greater than the volume of the chamber 42. Thus? the pump chamber 42 will be prevented from substantially filling with more than one of the fluid solutions separated by the spacer 10.
I
The treatment variations made possible by the method of the present invention are numerous. Various drugs, nutrientsy electrolytes or other items capable of being delivered in fluid solutions may be sequentially infused into a patient according to the present invention. The number of fluid solutions which may be sequentially infused into a patient are only limited by the ability to connect the solutions by valves to a catheter tube in a manner which continuously administers fluids without allowing any air bubbles into the line. The compatibility and stability of the various fluid solutions with one another are now of less importance. Almost any drug solution which can produce synergistic effects when used in combination, may be infused according to the method of the present invention. By frequently alternating between fluid solutions and spacer, several drug solutions can be administered to a patient in sequence over and over again without the problem of substantial mixing prior to infusion. The patient is thus able to obtain many benefits which may derive from the combination of a plurality of drug solutions. Many new drug solution combinations will be made possible through the use of the present invention. Of course, it should be understood that various changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. Any intravenous solution which does not react with adjoining fluid solutions may be substituted for the saline, dextrose and lipid solutions of the present invention. These and other changes can be made without departing from the spirit and the scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee/Applicant First: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I Flow Corporation | | Assignee - Original w/address: I Flow Corporation,Redondo Beach California 90277,US,00719120 | | Assignee Count: 1 | | Inventor: BROWN, Eric, W. | TAI, Henry, T. | | Inventor First: BROWN, Eric, W. | | Inventor - Original: BROWN, Eric, W. | TAI, Henry, T. | | Inventor - w/address: BROWN Eric W.,Redondo Beach, CA 90277,US | TAI Henry T.,Pacific Palisades, CA 90272,US | | Inventor Count: 2 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: EP | | Publication Kind Code: A1 | | Publication Date: 1986-06-04 | | Publication Month: 06 | | Publication Year: 1986 | | Application Number: EP1985903150A | | Application Country: EP | | Application Date: 1985-06-11 | | Application Month: 06 | | Application Year: 1985 | | Application with US Provisional: EP1985903150A | 1985-06-11 | | Priority Number: US1984619846A | | Priority Country: US | | Priority Date: 1984-06-12 | | Priority Date - Earliest: 1984-06-12 | | Priority Month: 06 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: WO1985US1104A | | PCT App Date: 1985-06-11 | | PCT Pub Number: WO1986000022A1 | | PCT Pub Date: 1986-01-03 | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/142
A61M 5/16827
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142, A61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: See references of WO 8600022A1 | | Count of Cited Refs - Non-patent: 1 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
2007-08-08
| RIN1
| -
|
| Description: INVENTOR (CORRECTION) |
| |
1986-12-30
| 18D
| -
|
| Description: DEEMED TO BE WITHDRAWN 1986-05-13 |
| |
1986-06-04
| AK
| +
|
| Description: DESIGNATED CONTRACTING STATES: EP 0182900 A1 AT; BE; CH; DE; FR; GB; IT; LI; LU; NL; SE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: EP R AT;BE;CH;DE;FR;GB;IT;LI;LU;NL;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: RJ-DWDRAW 1986-05-13 1986 Deemed to be withdrawn | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
EP182900A1
| 19860604
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
AU198544965A
| 19860110
| BROWN ERIC W
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
US4687475A
| 19870818
| Tai Henry T.
| I FLOW CORP
|
| Title: Method for sequential intravenous infusion of multiple fluids |
| |
WO1986000022A1
| 19860103
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP182900A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=EP182900A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 34/43 | | WO1986000022A1 | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | | Publication Number: WO1986000022A1 | | Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | | Title (Original): METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | | Title (English): METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | | Title (French): PROCEDE DE PERFUSION INTRAVEINEUSE SEQUENTIELLE DE FLUIDES MULTIPLES | | Title (German): | | Title (Spanish): | | Title - DWPI: Sequential intravenous solns. admin. method by sepg. two solns. in catheter by predetermined amt. of spacer soln. | Abstract:
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing.
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | Abstract (English):
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing. | Abstract (French):
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | | Abstract (German): | Abstract (Original):
A method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution (12) through a catheter tube (20) followed by the contiguous administration of a predetermined amount of spacer solution (10). The spacer solution (10) is then contiguously followed by a second solution (14). The amount of spacer solution (10) used between fluid solutions (12, 14) should be large enough to substantially prevent the first and second fluid solutions (12, 14) from mixing.
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14).
Le procédé consiste à administrer une première solution de fluide (12) par l'intermédiaire d'un tube de cathéter (20), à administrer ensuite sans interruption une quantité prédéterminée de solution intermédiaire (10), suivie d'une deuxième solution (14). La quantité de solution intermédiaire (10) utilisée entre les solutions de fluides (12, 14) devrait être suffisamment importante pour empêcher tout mélange entre la première et deuxième solutions de fluides (12, 14). | | Abstract (Spanish): | Claims:
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim I further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamberr said spacer solution fills a cylindrical cross-section of said tube having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim I wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
-6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tubey said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said tube between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pump, the volume of said tube filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber.
11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises- a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution.
AMENDED CLAIMS
[received by the International Bureau on 14 October 1985 (14-10-85); original claims 1-4 and 8-10 amended; other claims unchanged (3 pages)] 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through a lumen of said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said lumen of said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution such that said first and second fluid solutions are simultaneously in transit through said lumen of said catheter tube, said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim 1 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said lumen of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a tyringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamber, said spacer solution fills a cylindrical cross-section of said lumen having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim 1 wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said lumen of said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering two of said fluid solutions and a neutral spacer solution the-rebetween through a single lumen of said catheter tube, the amount of said neutral spacer solution adminstered between said two fluid solutions being large enough to prevent the fluid solutions on opposite sides of said neutral space"r solution within said catheter tube from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said lumen between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pumpr the volume of said lumen filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber. 11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution. | | Claims Count: 13 | Claims (English):
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim I further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamberr said spacer solution fills a cylindrical cross-section of said tube having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim I wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
-6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tubey said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said tube between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamberr coupled to said catheter tube for pumping fluids through said tuber said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pump, the volume of said tube filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber.
11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises- a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution.
AMENDED CLAIMS
[received by the International Bureau on 14 October 1985 (14-10-85); original claims 1-4 and 8-10 amended; other claims unchanged (3 pages)] 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through a lumen of said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said lumen of said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution such that said first and second fluid solutions are simultaneously in transit through said lumen of said catheter tube, said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
2. The method of Claim 1 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of said spacer solution being large enough so that said spacer solution substantially fills a cross-section of said lumen of said catheter tube between said first fluid solution and said second fluid solution at said peristaltic pump.
3. The method of Claim 1 further comprising a tyringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said predetermined amount of spacer solution being large enough so that when said spacer solution reaches said pumping chamber, said spacer solution fills a cylindrical cross-section of said lumen having a volume which exceeds the volume held by said pumping chamber.
4. The method of Claim 1 wherein said spacer solution does not substantially react with said first or said second solution while they are travelling through said lumen of said catheter tube.
5. The method of Claim 4 wherein said spacer solution comprises saline solution.
6. The method of Claim 4 wherein said spacer solution comprises a dextrose solution.
7. The method of Claim 4 wherein said spacer solution comprises an intravenous lipid solution.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering two of said fluid solutions and a neutral spacer solution the-rebetween through a single lumen of said catheter tube, the amount of said neutral spacer solution adminstered between said two fluid solutions being large enough to prevent the fluid solutions on opposite sides of said neutral space"r solution within said catheter tube from substantially mixing with one another.
9. The method of Claim 8 further comprising a peristaltic pump coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that said spacer solution maximally fills a cross-section of said lumen between the fluid solutions on opposite sides of said neutral spacer solution at said peristaltic pump.
10. The method of Claim 8 further comprising an infusion syringe-type cartridge pump, having a pumping chamber, coupled to said catheter tube for pumping fluids through said tube, said amount of neutral spacer solution being such that when said neutral spacer solution reaches said cartridge pumpr the volume of said lumen filled in total cross-section by said neutral solution exceeds the volume of said pumping chamber. 11. The method of Claim 8 wherein said neutral spacer solution comprises a saline solution.
12. The method of Claim 8 wherein said neutral spacer solution comprises a dextrose solution.
13. The method of Claim 8 wherein said neutral spacer solution comprises an intravenous solution. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing. | Independent Claims:
WE CLAIM: 1. A method for sequential intravenous administration of a first and second fluid solution, said method comprising: providing a catheter tube connected to a needle for intravenous administration of fluid solutions; administering a first fluid solution intravenously through said catheter tube; contiguously following said first solution with a predetermined amount of intravenous spacer solution through said catheter tube; and contiguously following said neutral spacer solution with a second fluid solution said predetermined amount of said intravenous spacer solution being large enough to prevent said first fluid solution and said second fluid solution from substantially mixing.
8. A method for sequential intravenous administration of a plurality of fluid solutions, said method comprising: providing a catheter tube connected to a needle for intravenous administration of a plurality of fluid solutions; and alternately administering one of said fluid solutions and a neutral spacer solution through said catheter tube, the amount of said neutral spacer solution administered between each fluid solution being large enough to prevent the fluid solutions on opposite sides of said neutral spacer solution from substantially mixing with one another. | Description:
M ETH OD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS
Background of the Invention This invention relates to the intravenous administration of multiple fluids.
There are many medical applications for which an intravenous infusion for a multiplicity of fluid solutions can be beneficial. One such application is chemotherapy infusions used in cancer treatment. This was recognized in the recent 13th Annual Cancer Courser given March 1-3. 1984, by the Harvard Medical School and New England Deaconess Hospital. In the syllabus article entitled "Multi-Drug Infusion Chemotherapy: the Delivery of Two or More Drugs Simultaneously"r Dr. Jacob J. Lokich described techniques for mixing drug solutions to form a combination which can be delivered to a patient by continuous intravenous infusion. The use of combination multi-drug chemotherapy has been developing in medicine since the 1960's. It has been used for such diseases as acute leukemiar Hodgkins disease, lung cancer, breast cancer and ovarian cancer. Unfortunately, there are only a limited number of drug combinations which have been found to be compatible and stable and which can produce a synergistic effect when administered.
There are many drugs which may not be used simultaneously because of reactions between the drugs which make infusion impracticable or undesirable.
Some drugs react and thereby neutralize one another.
Other drugs react to form precipitates which may clog the catheter tubing or even worse cause an embolism in the patient. Thusr according to present multi-drug combination treatmentst physicians are limited in their choice of drug solutions.
Summary-of the invention This invention is directed to a method for sequential intravenous administration of fluid solutions. The method provides for administering a first fluid solution through a catheter tube followed by the contiguous administration of a predetermined amount of spacer solution. The spacer solution is then contiguously followed by a second fluid solution. The amount of spacer solution which would be used between fluid solutions would be prescribed by the physician and should be large enough to prevent the first and second fluid solutions from substantially mixing.
The method of the present invention enormously increases the number of variations available to physicians for treating cancer and other diseases with multiple drug infusions. Since the intravenous spacer solution prevents the drug solutions from substantially mixing with one another before entering the body, drug solutions which were formerly incompatible because of deleterious reactions may now be tried as potentially beneficial treatments. Once a drug solution is infused into the patient the blood stream carries - the drug away so quickly that it is usually safe to follow the drug solution with another solution after the spacer. By sequentially alternating between drug solutions and spacer solutions many new multiple drug treatments may be developed. Other objects and advantages of the invention will become apparent during the following description of the presently preferred embodiments of the invention taken in conjunction with the drawings.
Brief DescriRtion of -the Drawinas FIG. 1 is an elevational view of an apparatus for performing the method of the present invention.
FIG. 2 is a sectional view of the catheter tube of FIG. 1 demonstrating the method of the present invention. FIG. 3 is a cross-sectional view of the catheter tube of FIG. 1 after the spacer solution has been pumped through a length of catheter tubing.
FIG. 4 is an elevational view of a peristaltic pump for use in the method of the present invention.
FIG. 5 is an elevational view of a syringe-type cartridge pump for use in the method of the present invention. Detailed DescriT)tion of the Preferred Embodiments Turning now to the drawings, FIG. 1 illustrates an apparatus for performing the method of the present invention. The apparatus is described in the inventors' copending application U.S. Serial No. 619,847, entitled "Apparatus and Method for Administering Multiple Fluid Infusions", sharing the same filing date and assignee as the present invention. the inventors' copending application is hereby incorporated by reference herein. Their apparatus enables one to switch between different fluid solutions being intravenously administered through a catheter tube without allowing any air bubbles to enter into the line. A valve receives inputs from a plurality of fluid solution sources and has a primary input for a spacer solution 10 source, The valve switches between sources to alternately provide one of the fluid solutions and the spacer solution 10.
According to the method of the present invention, the spacer solution 10 is provided for substantially isolating the different fluid solutions during intravenous administration. FIG. 2 shows a first solution 12 and a second solution 14 separated by the spacer solution 10. The solutions are carried by a catheter tube 20 through a needle and into a patient.
Pump P keeps the fluids moving through the catheter tube 20 at a predetermined rate. The spacer solution must be a solution which is suitable for intravenous infusion into a patient. The spacer 10 must also be neutral with respect to each of the fluid solutions on either side of it. In other words, the spacer solution 10 must not substantially react with either the first fluid solution 12 or the second fluid solution 14 while it is traveling through the catheter tube 20 into the patient. Some solutions may react with one another over a long period of time, however, it is only necessary that there be no adverse reactions prior to the infusion.
There are a number of intravenous solutions which may be selected as the neutral spacer 10, including but not.limited to saline solutions, dextrose solutions and intravenous lipid solutions. The appropriate spacer solution 10 should be selected according to a patient's needs. For example, a patient requiring nutritional supplement may receive a high concentration dextrose solution as the spacer, whereas a patient merely requiring liquids may receive a saline solution or a low concentration dextrose solution. The volume of the spacer solution 10 affects the rate of mixing between the fluid solutions on adjoining sides of the spacer. A spacer with a low volume would have a tendency to allow the adjoining fluids to diffuse more quickly into each other. On the other handr a spacer with a larger volume would decelerate the rate of diffusion of adjoining drug solutions into each other.
The volume of the spacer solution must be selected so as to avoid substantial mixing between the fluid solutions on either side of the spacer solution 10 in the time that the solutions are in transit within the catheter tube 20. If the diffusion rate between a fluid solution and the spacer solution 10 is rapid, the spacer solution 10 must have a greater volume to avoid mixing of the two isolated fluid solutions.
Some insubstantial mixing may be allowed where the first drug solution 12 and the second drug solution 14 are relatively compatible with one another and will not react when in contact to a small extent. For more highly reactive fluid solutions, any amount of mixing would be substantial and must be prevented. Thus, the appropriate volume of spacer 10 depends on a variety of factors.
Because of laminar flow which occurs during the movement of fluids through the catheter tube 20F the type of pump being used will also be determinative of the minimum volume of spacer solution 10 required to separate the first and second fluid solutions.
Referring now to FIG. 3r the affects of laminar flow of fluids as they travel through the catheter tube 20 is shown. There is friction between the walls of the catheter tube 20 and the fluids which are flowing through it. This friction slows the outer layers of fluid. Thus, the fastest flowing fluid is found along the center axis of the catheter tube 20. Over a period of travel through the tube the spacer solution develops a convex pointed front sided and a concave indented rear side. The volume of spacer solution 10 must be prescribed to be large enough so that the rear edge of the first fluid solution 12 does not substantially overlap the leading front point of fluid solution 14. A cross-section showing such an overlap is illustrated in FIG. 3 at cross-section 16. A peristaltic pump 30, illustrated in FIG. 4f operates by squeezing the catheter tube 20. If there is a cross-section 16 including the first and second fluid solutions as they reach the peristaltic pump 30, upon being squeezed by pump 30 the two solutions would be in direct contact as a result of the pump action.
Therefore, it is important that when using a peristaltic pump 30 that there be a cross-section 17 maximally filled with spacer solution 10 as the spacer solution reaches the peristaltic pump 30.
A syringe-type cartridge pump 40,, also known as volumetric pump, illustrated in FIG. 5 works in a different manner. The cartridge pump 40 operates by filling and emptying a chamber 42. A valve 44 rotates to switch between a filling and an emptying position.
To prevent substantial mixing between fluid solution 12 and second fluid solution 14, it is again necessary to prescribe a sufficient volume of spacer solution 10 to substantially isolate the two fluid solutions. Toaccomplish this, the spacer solution 10 should encompass a volume which fills a cylindrical cross-section 19 of the tube which is equal to or greater than the volume of the chamber 42. Thus? the pump chamber 42 will be prevented from substantially filling with more than one of the fluid solutions separated by the spacer 10.
I
The treatment variations made possible by the method of the present invention are numerous. Various drugs, nutrientsy electrolytes or other items capable of being delivered in fluid solutions may be sequentially infused into a patient according to the present invention. The number of fluid solutions which may be sequentially infused into a patient are only limited by the ability to connect the solutions by valves to a catheter tube in a manner which continuously administers fluids without allowing any air bubbles into the line. The compatibility and stability of the various fluid solutions with one another are now of less importance. Almost any drug solution which can produce synergistic effects when used in combination, may be infused according to the method of the present invention. By frequently alternating between fluid solutions and spacer, several drug solutions can be administered to a patient in sequence over and over again without the problem of substantial mixing prior to infusion. The patient is thus able to obtain many benefits which may derive from the combination of a plurality of drug solutions. Many new drug solution combinations will be made possible through the use of the present invention. Of course, it should be understood that various changes and modifications to the preferred embodiments described above will be apparent to those skilled in the art. Any intravenous solution which does not react with adjoining fluid solutions may be substituted for the saline, dextrose and lipid solutions of the present invention. These and other changes can be made without departing from the spirit and the scope of the invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the following claims. | | Assignee/Applicant: I-FLOW CORPORATION | | Assignee/Applicant First: I-FLOW CORPORATION | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: I-FLOW CORPORATION | | Assignee - Original w/address: I-FLOW CORPORATION | | Assignee Count: 1 | | Inventor: BROWN, Eric, W. | TAI, Henry, T. | | Inventor First: BROWN, Eric, W. | | Inventor - Original: BROWN, Eric, W. | TAI, Henry, T. | | Inventor - w/address: BROWN Eric W. | TAI Henry T. | | Inventor Count: 2 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: WO | | Publication Kind Code: A1 | | Publication Date: 1986-01-03 | | Publication Month: 01 | | Publication Year: 1986 | | Application Number: WO1985US1104A | | Application Country: WO | | Application Date: 1985-06-11 | | Application Month: 06 | | Application Year: 1985 | | Application with US Provisional: WO1985US1104A | 1985-06-11 | | Priority Number: US1984619846A | | Priority Country: US | | Priority Date: 1984-06-12 | | Priority Date - Earliest: 1984-06-12 | | Priority Month: 06 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/142
A61M 5/16827
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142, A61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: GREY et al., "Multiple use ot TPN Catheter is not Heresy: Retrospective Review and Initial Report of Prospective Study", Nutritional Support Services, Vol. 2, No. 9, September 1982, pp. 18-21. | HUTCHINSON, MARGARET M., "Administration of Fat Emulsions", American Journal of Nursing, February 1982, pp. 275-277. | | Count of Cited Refs - Non-patent: 2 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US4450079A
| 1984-05-22
| Farr Andrew F.
| IMED CORP
| Y
| 5 (Examiner)
|
| Title: Cassette for providing a controlled flow of fluid |
| |
US4196730A
| 1980-04-08
| Wilson Dennis R.
| WILSON DENNIS R
| X
| 5 (Examiner)
|
| Title: Liquid drug dispenser |
| |
US4257416A
| 1981-03-24
| Prager David
| PRAGER DAVID
| X
| 5 (Examiner)
|
| Title: Multi-channel venipuncture infusion set |
| |
US3057350A
| 1962-10-09
| COWLEY CALVIN C
| BAXTER DON INC
| A
| 5 (Examiner)
|
| Title: Administration set |
| |
US3957082A
| 1976-05-18
| Fuson Robert Lee
| ARBROOK INC
| A
| 5 (Examiner)
|
| Title: Six-way stopcock |
| |
| | Count of Cited Refs - Patent: 5 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
1986-01-03
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS AT; BE; CH; DE; FR; GB; IT; LU; NL; SE |
| |
1986-01-03
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 8600022 A1 AT; BE; CH; DE; FR; GB; IT; LU; NL; SE |
| |
1986-01-03
| AK
| +
|
| Description: DESIGNATED STATES AU; JP |
| |
1986-01-03
| AK
| +
|
| Description: DESIGNATED STATES WO 8600022 A1 AU; JP |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: XX N AT;AU;BE;CH;DE;FR;GB;IT;JP;LU;NL;SE | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
WO1986000022A1
| 19860103
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
AU198544965A
| 19860110
| BROWN ERIC W
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
EP182900A1
| 19860604
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
US4687475A
| 19870818
| Tai Henry T.
| I FLOW CORP
|
| Title: Method for sequential intravenous infusion of multiple fluids |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO1986000022A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO1986000022A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 35/43 | | AU198544965A | METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | | Publication Number: AU198544965A | | Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | | Title (Original): | | Title (English): METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Sequential intravenous solns. admin. method by sepg. two solns. in catheter by predetermined amt. of spacer soln. | Abstract:
| | Abstract (English): | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: I FLOW CORP | | Assignee/Applicant First: I FLOW CORP | | Assignee - Standardized: I FLOW CORP | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | TAI HENRY T | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | TAI HENRY T | | Inventor Count: 2 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: AU | | Publication Kind Code: A | | Publication Date: 1986-01-10 | | Publication Month: 01 | | Publication Year: 1986 | | Application Number: AU198544965D | | Application Country: AU | | Application Date: 1985-06-11 | | Application Month: 06 | | Application Year: 1985 | | Application with US Provisional: AU198544965D | 1985-06-11 | | Priority Number: US1984619846A | | Priority Country: US | | Priority Date: 1984-06-12 | | Priority Date - Earliest: 1984-06-12 | | Priority Month: 06 | | Priority Year(s): 1984 | | Earliest Priority Year: 1984 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61M0005142, A61M0005168 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61M0005142
| A
| A61
| A61M
| A61M0005
| A61M0005142
|
A61M0005168
| A
| A61
| A61M
| A61M0005
| A61M0005168
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| A61M 5/142
A61M 5/16827
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61M0005142, A61M0005168A11 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
AU198544965A
| 19860110
| BROWN ERIC W
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
EP182900A1
| 19860604
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
US4687475A
| 19870818
| Tai Henry T.
| I FLOW CORP
|
| Title: Method for sequential intravenous infusion of multiple fluids |
| |
WO1986000022A1
| 19860103
| BROWN Eric W.
| I FLOW CORP
|
| Title: METHOD OF SEQUENTIAL INTRAVENOUS INFUSION OF MULTIPLE FLUIDS |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU198544965A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU198544965A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 36/43 | | TW537880B | Method for improving patient compliance with a medical program | | Publication Number: TW537880B | | Title: Method for improving patient compliance with a medical program | | Title (Original): | | Title (English): Method for improving patient compliance with a medical program | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Remote patient monitor has detectors on medication containers causing transmission of use signals and tracking by remote location | Abstract:
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | Abstract (English):
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: REMOTE MEDICAL CORP | | Assignee/Applicant First: REMOTE MEDICAL CORP | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: TW | | Publication Kind Code: B | | Publication Date: 2003-06-21 | | Publication Month: 06 | | Publication Year: 2003 | | Application Number: TW2000104016A | | Application Country: TW | | Application Date: 2000-03-07 | | Application Month: 03 | | Application Year: 2000 | | Application with US Provisional: TW2000104016A | 2000-03-07 | | Priority Number: US1999266647A | | Priority Country: US | | Priority Date: 1999-03-11 | | Priority Date - Earliest: 1999-03-11 | | Priority Month: 03 | | Priority Year(s): 1999 | | Earliest Priority Year: 1999 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B000500, G06Q005000, G08C001900, H04M001100 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
G06Q005000
| G
| G06
| G06Q
| G06Q0050
| G06Q005000
|
G08C001900
| G
| G08
| G08C
| G08C0019
| G08C001900
|
H04M001100
| H
| H04
| H04M
| H04M0011
| H04M001100
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| G06F 19/3418
A61B 5/002
A61B 5/0022
| -
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B000500B, G06F001934C | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2007-07-21
| MM4A
| -
|
| Description: ANNULMENT OR LAPSE OF PATENT DUE TO NON-PAYMENT OF FEES |
| |
2003-10-31
| GD4A
| +
|
| Description: ISSUE OF PATENT CERTIFICATE FOR GRANTED INVENTION PATENT |
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| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: ZH | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
TW537880B
| 20030621
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Method for improving patient compliance with a medical program |
| |
EP1034734A1
| 20000913
| Brown Eric W.
| BROWN ERIC W
|
| Title: Method for improving patient compliance with a medical program |
| |
JP2000316820A
| 20001121
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM |
| |
US20020055892A1
| 20020509
| Brown Eric
| -
|
| Title: Personalized sales video system |
| |
US20040015132A1
| 20040122
| Brown Eric
| -
|
| Title: Method for improving patient compliance with a medical program |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=TW537880B_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=TW537880B_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 37/43 | | JP2000316820A | METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM | | Publication Number: JP2000316820A | | Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM | | Title (Original): METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM | | Title (English): METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Remote patient monitor has detectors on medication containers causing transmission of use signals and tracking by remote location | Abstract:
PROBLEM TO BE SOLVED: To provide a medical system method used by an outpatient and using a mobile drug administration and data acquisition device that communicates with a base station which is typically provided in the patient's house.
SOLUTION: A base station periodically communicates with a remote control station. The remote control station downloads a medical plan to the base station and feeds it to a mobile device, and the amount of use and medical state information from a patient are received via the mobile device and the base station. A transmission repetitive protocol is used to thereby enhance the certainty with which the patient's information is received by the remote station. The remote station can monitor the behavior and condition of the patient, provide reports, and further provide replenishment requests when supplies are scant. Presentation to the patient is provided by Internet or other simple techniques including explaining important items and showing previous graphs while recommending the purchase of supplies and drugs.
COPYRIGHT: (C)2000,JPO&Japio
PROBLEM TO BE SOLVED: To provide a medical system method used by an outpatient and using a mobile drug administration and data acquisition device that communicates with a base station which is typically provided in the patient's house. SOLUTION: A base station periodically communicates with a remote control station. The remote control station downloads a medical plan to the base station and feeds it to a mobile device, and the amount of use and medical state information from a patient are received via the mobile device and the base station. A transmission repetitive protocol is used to thereby enhance the certainty with which the patient's information is received by the remote station. The remote station can monitor the behavior and condition of the patient, provide reports, and further provide replenishment requests when supplies are scant. Presentation to the patient is provided by Internet or other simple techniques including explaining important items and showing previous graphs while recommending the purchase of supplies and drugs. | Abstract (English):
PROBLEM TO BE SOLVED: To provide a medical system method used by an outpatient and using a mobile drug administration and data acquisition device that communicates with a base station which is typically provided in the patient's house.
SOLUTION: A base station periodically communicates with a remote control station. The remote control station downloads a medical plan to the base station and feeds it to a mobile device, and the amount of use and medical state information from a patient are received via the mobile device and the base station. A transmission repetitive protocol is used to thereby enhance the certainty with which the patient's information is received by the remote station. The remote station can monitor the behavior and condition of the patient, provide reports, and further provide replenishment requests when supplies are scant. Presentation to the patient is provided by Internet or other simple techniques including explaining important items and showing previous graphs while recommending the purchase of supplies and drugs.
COPYRIGHT: (C)2000,JPO&Japio | | Abstract (French): | | Abstract (German): | Abstract (Original):
PROBLEM TO BE SOLVED: To provide a medical system method used by an outpatient and using a mobile drug administration and data acquisition device that communicates with a base station which is typically provided in the patient's house.
SOLUTION: A base station periodically communicates with a remote control station. The remote control station downloads a medical plan to the base station and feeds it to a mobile device, and the amount of use and medical state information from a patient are received via the mobile device and the base station. A transmission repetitive protocol is used to thereby enhance the certainty with which the patient's information is received by the remote station. The remote station can monitor the behavior and condition of the patient, provide reports, and further provide replenishment requests when supplies are scant. Presentation to the patient is provided by Internet or other simple techniques including explaining important items and showing previous graphs while recommending the purchase of supplies and drugs.
COPYRIGHT: (C)2000,JPO&Japio | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: REMOTE MEDICAL CORP | | Assignee/Applicant First: REMOTE MEDICAL CORP | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: REMOTE MEDICAL CORP | | Assignee - Original w/address: REMOTE MEDICAL CORP | | Assignee Count: 1 | | Inventor: BROWN ERIC W | | Inventor First: BROWN ERIC W | | Inventor - Original: BROWN ERIC W | | Inventor - w/address: BROWN ERIC W | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: JP | | Publication Kind Code: A | | Publication Date: 2000-11-21 | | Publication Month: 11 | | Publication Year: 2000 | | Application Number: JP200066928A | | Application Country: JP | | Application Date: 2000-03-10 | | Application Month: 03 | | Application Year: 2000 | | Application with US Provisional: JP200066928A | 2000-03-10 | | Priority Number: US1999266647A | | Priority Country: US | | Priority Date: 1999-03-11 | | Priority Date - Earliest: 1999-03-11 | | Priority Month: 03 | | Priority Year(s): 1999 | | Earliest Priority Year: 1999 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B000500, G06Q005000, G08C001900, H04M001100 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
G06Q005000
| G
| G06
| G06Q
| G06Q0050
| G06Q005000
|
G08C001900
| G
| G08
| G08C
| G08C0019
| G08C001900
|
H04M001100
| H
| H04
| H04M
| H04M0011
| H04M001100
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| G06F 19/3418
A61B 5/002
A61B 5/0022
| -
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B000500B, G06F001934C | | Locarno Class: | | JP F Terms: 2F073: AA02; AA03; AA33; AB01; AB02; AB12; BB01; BB09; BC01; BC02; CC01; CC06; CC07; CC08; CC09; CC11; CC14; CC15; CD17; CD24; DD06; DD07; DE08; DE12; EF01; EF09; FG01; FG02; FG04; FG11; GG01; GG10
4C017
4C117: XA01; XB02; XB15; XC26; XE12; XE15; XE23; XE54; XE71; XF03; XF09; XF21; XG19; XG22; XG23; XG34; XG36; XG37; XG43; XH12; XH13; XH16; XH17; XJ03; XJ05; XJ12; XJ21; XJ45; XJ46; XJ52; XJ58; XL03; XL05; XL08; XL09; XL13; XL19; XL22; XP03; XP09; XP11; XP12; XP13; XP14; XP15; XQ13; XQ18; XR02; XR05
5K101: KK02; KK13; KK19; LL00; LL01; LL12; MM07; NN06; NN07; NN18; NN21; TT06
5K201: BA02; BA19; CA01; CA06; CB10; CC01; CC10; EA05; EC05; ED04; EF03; EF04; EF09
5L099: ; AA22; AA23
| | JP FI Codes: | A61B000500-102C | G06F001760-126H | G06F001760-126K | G06Q005022 | G06Q005024-100 | G06Q005024-110 | G08C001900-V | H04M001100-301 | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
EP1444947B1
| 2007-11-28
| MATSUSHITA ELECTRIC IND CO LTD
|
JP03631744B2
| 2005-03-23
| MATSUSHITA DENKI SANGYO KK
|
JP04643847B2
| 2011-03-02
| TEIJIN LTD
|
JP04701556B2
| 2011-06-15
| SUMITOMO ELECTRIC IND LTD
|
JP04744174B2
| 2011-08-10
| TERUMO CORP
|
JP2002288565A
| 2002-10-04
| TEIJIN LTD
|
JP2003044584A
| 2003-02-14
| SUMITOMO ELECTRIC INDUSTRIES
|
JP2005025747A
| 2005-01-27
| BECTON DICKINSON CO
|
JP2006280393A
| 2006-10-19
| TERUMO CORP
|
JP2009172383A
| 2009-08-06
| DRAEGER MEDICAL SYSTEMS INC
|
US7596608B2
| 2009-09-29
| LIVEPROCESS CORP
|
US7865372B2
| 2011-01-04
| PANASONIC CORP
|
US8255238B2
| 2012-08-28
| POWELL WILLIAM CAMERON
|
WO2002029664A1
| 2002-04-11
| PARK YONG NAM
|
WO2003084393A1
| 2003-10-16
| MATSUSHITA ELECTRIC IND CO LTD
|
WO2006086089A1
| 2006-08-17
| MP4 SOLUTIONS LP
|
| | Count of Citing Patents: 16 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: JA | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
JP2000316820A
| 20001121
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM |
| |
EP1034734A1
| 20000913
| Brown Eric W.
| BROWN ERIC W
|
| Title: Method for improving patient compliance with a medical program |
| |
TW537880B
| 20030621
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Method for improving patient compliance with a medical program |
| |
US20020055892A1
| 20020509
| Brown Eric
| -
|
| Title: Personalized sales video system |
| |
US20040015132A1
| 20040122
| Brown Eric
| -
|
| Title: Method for improving patient compliance with a medical program |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP2000316820A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=JP2000316820A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 38/43 | | US20040015132A1 | Method for improving patient compliance with a medical program | | Publication Number: US20040015132A1 | | Title: Method for improving patient compliance with a medical program | | Title (Original): Method for improving patient compliance with a medical program | | Title (English): Method for improving patient compliance with a medical program | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Patient compliance improving method, involves repetitively transmitting wave energy signal by radio transceiver corresponding to each newly established data set for selected period of transmission time | Abstract:
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | Abstract (English):
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A medical system method comprises steps in using portable medication dispensing and data taking devices for use by an out-patient, and which communicate with a base station, typically within the patients' home. The base station communicates periodically with a remote control station which downloads a medical schedule to the base station and thereby to the portable devices, and also receives usage and medical state information from the patient through the portable devices and the base station. A transmission repetition protocol is used which provides a high degree of confidence that patient information will be received by the remote station. The remote station monitors patient activities and status and provides reports as well as refill requests when supplies are low. Presentations to the patient are provided by Internet or other simplified technique including showing history graphics while describing important features and recommending purchases of supplies and medications. | | Abstract (Spanish): | Claims:
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim 1 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim 1 further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction. | | Claims Count: 16 | Claims (English):
What is claimed is:
1. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
2. The method of claim 1 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
3. The method of claim 1 further comprising the step of transmitting the medication schedule from the base station to the medical device means.
4. The method of claim 3 further comprising the step of transmitting the data set values of the medical device means to the base station.
5. The method of claim 4 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
6. The method of claim 5 further comprising the step of composing a refill request message and of transmitting the refill request message to the patient.
7. The method of claim 5 further comprising the step of composing a graphical summary report showing a time sequence of medication dispensing over a selected time duration, and correlated thereto a time sequence of a corresponding medical data measurement over the selected time duration.
8. The method of claim 1 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time; transmitting the list repetitively at a selected frequency of transmission.
9. The method of claim 1 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction.
10. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
11. The method of claim 10 further comprising the step of activating a human responsive signaling means in accordance with a medical schedule so as to provoke the scheduled and timely use of the portable medical device means.
12. The method of claim 10 further comprising the step of transmitting the medical state sensing schedule from the base station to the medical device means.
13. The method of claim 12 further comprising the step of transmitting the data set values of the medical device means to the base station.
14. The method of claim 13 further comprising the steps of providing a remote monitoring station; receiving the data set values from the base station at the remote monitoring station; computing a graphical correlation between the received data set values and a selected medical schedule, and transmitting the graphical correlation to the patient.
15. The method of claim 10 further comprising the steps of storing a list of all said data sets established over the selected period of transmission time and then transmitting the list repetitively at a selected frequency of transmission.
16. The method of claim 10 further comprising the steps of pairing each of the data sets with a digital data integrity checking code and further providing an error-reducing protocol operating on the data sets as received for providing error reduction. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station. | Independent Claims:
1. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medication storing means, a medication accessing means, a dispensed medication counting means, and a medical device wave energy communicating means; b) sequencing a counter of the dispensed medication counting means each time the medication accessing means is manipulated for access to the medication storing means; c) establishing a data set comprising each new numerical value of the counter and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station.
10. A method for improving patient compliance with a medical program, the method comprising the steps: a) providing a portable medical device means providing a medical state sensing means, a medical state value recording means, and a medical device wave energy communicating means; b) recording the medical state each time the medical state sensing means is manipulated for sensing the medical state; c) establishing a data set comprising each new value of the medical state and a corresponding time and date of the numerical value of the counter; d) repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period chosen to assure a selected probability of the receipt of said wave energy signal by a base station. | Description:
[0001] This application is a divisional of Ser. No. 09/266,647 filed Mar. 11, 1999 presenting non-elected claims 1-16 and is related to provisional applications having serial Nos. 60/070,521; 60/071,623; 60/088,727 and corresponding assigned filing dates of Jan. 6, 1998, Jan. 16, 1998 and Jun. 10, 1998 respectively and which contain subject matter substantially the same as, the present application.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] This invention relates generally to the monitoring and control of medical care data by non-medically trained individuals, and more particularly to an automated method of collecting and using patient care data for assuring a high level of healthcare vigilance with feedback to the patient and the patient's caregivers, and with provision for professional medical advice including the selection of offered medications and other medical supplies for sale.
[0004] 2. Description of Related Art
[0005] The following art defines the present state of this field:
[0006] Lipscher, U.S. Pat. No. 4,082,084 describes a portable diagnostic device, particularly for medical field-examinations comprising a case-like housing in which replaceable electronic examining units are arranged serving for the examination of different physiological functions and/or conditions. The housing comprises an electronic power supply feeding each of the electronic examining units, a common display receiving the output signals of the examining units and electrical connectors providing electrical connections between the housing and each of the examining units. The inner room of the housing is divided into two separate parts, the first of which is arranged in a modular system and accommodates slide-in examining units, while the second part serves to accommodate the accessory means required for the examinations.
[0007] Fu, U.S. Pat. No. 4,803,625 provides for a personal health monitor which includes sensors for measuring patient weight, temperature, blood pressure, and ECG waveform. The monitor is coupled to a central unit via modems and includes a computer which is programmed to prompt a patient to take prescribed medication at prescribed times, to use the sensor to measure prescribed health parameters, and to supply answers to selected questions. Medication compliance information, test results, and patient answers are compiled in a composite log which is automatically transmitted to the central unit. The computer is also programmed automatically to disconnect the monitor from an alternating current power source and to rely on internal battery power during certain periods of patient monitor interaction, such as during use of the ECG module. In this way, danger to the patient and complexity of the ECG module are minimized. The computer is also programmed to compare measured test information with predetermined expected values, and in the event of a discrepancy, to collect additional information from the patient to assist trained personnel at the central unit in interpreting the composite log. The computer is also programmed to alert the central unit promptly in the event one or more measured parameters falls outside of a prescribed normal range. The normal range for a given parameter is made to vary in accordance with the measured value of one or more other parameters in order to reduce the incidence of false alarms.
[0008] Bornn et al., U.S. Pat. No. 4,827,943 provides a link between the caregiver and the subject being monitored which utilizes an intermediate base station with redundant signal paths between the base station and the caregiver. The caregiver wears a unit which receives signals from the base station. Signals from the base station provide information about the subject being monitored and provides signals for use in determining whether the caregiver remains within the range of the base station. The unit worn by the subject being monitored can include diagnostic circuitry for evaluating signals received from sensors to transmit an alarm signal to the base stations when the subject being monitored is in need of assistance. A range monitoring system is provided which alerts the subject being monitored as well as the caregiver whenever the subject being monitored moves outside the range of the base station.
[0009] Kaufman, U.S. Pat. No. 4,933,873 describes an interactive patient assistance device which houses both pre-selected doses of medication and a physical testing device. Both medication and the testing device are normally retained within separate compartments within the device away from access by the patient. The device keeps track of medication and diagnostic testing schedules. The device is also capable of receiving and interpreting verbal commands of the patient. The device makes a pre-selected dose of medication available to the patient in response to either the medication schedule or the receipt of a verbal command by the patient. Likewise, the testing device is made available to the patient in response either to the testing schedule or the receipt of a verbal command from the patient.
[0010] Treatch, U.S. Pat. No. 5,007,429 describes a user interface for directing the programming of operating parameters for patient blood pressure testing into and downloading blood pressure data from ambulatory patient blood pressure monitoring units. The user interface operates on a system comprising a plurality of microprocessor based, ambulatory blood pressure measuring patient units, an office control unit, and a data processing center, typically accessed over telephone lines. An office control unit is used to program patient units with test regimens for specific patients. The control units are also used to download data from the patient units and to transfer the data, along with patient identifying data, to the central data processing facility. The office control unit includes local memory which stores various interface routines, a microprocessor for executing the routines, a 12-character keypad allowing input of integers and a display for displaying prompts to the user. Upon initial power up of the control unit, and operator using the control unit is prompted through a start up sequence and a menu selection sequence to carry out the desired functions of the system. All selections are made, and all operating parameters are entered, through a telephone like keypad. The display indicates to the user which parameter entry of which is called for and which menu items are available for selection. During transfer of data to the central processing facility, additional prompts may be given to the operator by voice over the telephone handset.
[0011] Blomquist, U.S. Pat. No. 5,338,157 describes an invention relating to systems and methods for communicating with ambulatory medical devices, such as drug delivery devices, both locally and remotely. In one embodiment, a caregiver drug pump communicates with a remote patient drug pump for data gathering, trouble shooting, and operational program changes. The caregiver drug pump is at least substantially identical in configuration to the patient drug pump. The caregiver drub pump transmits caregiver key input signals to the remote patient drug pump. The patient drug pump receives the key input signals, accesses a desired program, and transmits information for display on the display of the caregiver drug pump. In another embodiment, a computer is provided for communicating locally and/or remotely with a drug pump. The computer may include a display with an image of a pump. The computer may be operated through the use of a mouse or touch screen with respect to the image of the pump, to simulate use of the pump while using the personal computer. The computer may also be used as a training aid for training a caregiver and/or patient how to use the drug pump.
[0012] Maestre, U.S. Pat. No. 5,347,453 describes a portable programmable medication device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the time occurrence of each programmed administration time, and audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
[0013] Stutman, U.S. Pat. No. 5,416,695 describes a medical alert system which enables an authorized user, such as a doctor, to remotely set selection and limit parameters pertaining to specific medical and geodetic information of an ambulatory patient and thereater received updates of that information over a wireless communication network when the parameters have been met. A telemetry device attached to the patient provides an inbound stream of medical and geodetic information to a host computer, which is configured to exact selected portions of that information in response to the parameters provided by a remote processing device via a communications network. Upon completion of the latter process, the host computer transfers the extracted information to the remote processing device over the network, thereby informing the doctor of a medical situation.
[0014] Maestre, U.S. Pat. No. 5,495,961 describes a portable programmable medication alarm device for aiding in the administration of medication or pharmaceuticals in accordance with a prescribed medication dosage schedule. In a first illustrative embodiment, the programmable medication alarm device is manually programmed with data representative of a prescribed medication dosage schedule specifying a prescribed administration time, dosage amount, administration route, and medication instructions for each medication dosage to be administered to the patient. In response to the timed occurrence of each programmed administration time, an audible dosage alarm signal is generated and graphical representations of the prescribed administration time, dosage amount, administration route, and medication instructions are visually displayed in predefined visual display fields. In a second illustrative embodiment, the portable medication alarm device is programmed by loading the prescribed dosage schedule data from a computer system, into the memory of the medication alarm device, using an automated data communication process. Also disclosed is a medication container holder which attaches the programmed medication alarm device to a conventional medication container, such as an eye-drop dispenser bottle, nasal-spray canister or pill bottle, without interfering with the operation thereof.
[0015] Vasko, U.S. Pat. No. 5,573,506 describes a remotely programmable infusion pump with interactive voice response via touch-tone phone (i.e., voice mail system in IV pump). The remotely programmable infusion system also comprises a voice storage unit for storing the voice signal. The remotely programmable infusion system further comprises a processor, coupled to the remote communication port, to the voice storage unit, and to the memory, for accessing the voice signal from the voice storage unit and the programmable protocol from the memory, and for processing the programmable protocol in response to receiving the remote programming signal.
[0016] Kurtenbach, U.S. Pat. No. 5,582,323 describes a medication dispensing and monitoring system of a present invention includes a housing containing a plurality of pill dispensing compartments for dispensing medication to a patient at a desired time. The invention is programmed to dispense medication at the desired time and activates alarms if the proper procedure is not completed. The invention also contacts the emergency personnel through phone lines and initiates two-way hands free communication between the patient and emergency personnel. The invention further includes a pendent transmitter worn by the patient to contact emergency personnel.
[0017] Hultman, U.S. Pat. No. 5,582,593 describes an ambulatory medication delivery system which includes an ambulatory pump unit having a computer control linear motor pump for pumping predetermined volumes of fluid in accordance with a programmed delivery schedule which may be altered through communication with a remote monitoring location via a telephone data access line or via radio frequency communication. A clinician communication unit and a patient communication unit receive and send information to the ambulatory pump unit and also communicate via a telephone data modem access to the computer at a remote monitoring location at which trained health personnel can monitor a number of patient locations and alter or change medication delivery profiles as required.
[0018] Kutzik et al, U.S. Pat. No. 5,692,215 describes a system that provides for monitoring a user in a user living area. The system includes a system controller and an activity detection subsystem. The activity detection subsystem monitors a daily living activity of the user and provides information representative of the daily living activity to the system controller. The system controller includes a control circuit which generates a control signal in response to the daily living activity information obtained by the activity detection subsystem. Control information from the system controller is applied by way of a control information communication channel both to the activity detection subsystem and to a remote monitoring site. The activity detection subsystem may be system for determining the movement of the user around the home, medication compliance by the user, problems with usage for stoves or other potentially dangerous appliances, and selected auxiliary appliances.
[0019] Tacklind, U.S. Pat. No. 5,704,366 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
[0020] Ridgeway, U.S. Pat. No. 5,710,551 describes a system for the remote monitoring of in-home self-medication to assure compliance with prescribed dosage schedules. The system comprises at least one subscriber home medication station which interfaces with a communications link and a remote central monitoring station also interfaced with the link and operative to receive and analyze messages transmitted by the home medication station. The preferred home medication station embodiment transmits messages to the central station over the communications link each time the home medication station is accessed for a dosage of medication. Central station computer means verify receipt of such signals within each subscriber's uniquely scheduled dosage time windows, and alert an operator to take appropriate action if a dosage schedule error is detected. Alternative home medication station embodiments utilize a built-in programmable timer module to verify accessing of medication within a subscriber's uniquely scheduled dosage time windows, and to initiate transmission of alarm signals to the central station over the communications link if dosage schedule errors are detected by the timer module. All embodiments provide subscribers with help-button means to initiate transmission of alarm messages to the central station over the communications link in event of adverse reaction to medication, or other emergencies. Since the central station will be alerted if any scheduled dosage is missed, no emergency rendering a subscriber unable to press a help-button or call for help can go undetected longer than the maximum time between consecutively scheduled dosages.
[0021] Tacklind, U.S. Pat. No. 5,752,709 describes a system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are downloaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.
[0022] Stoop, U.S. Pat. No. 5,767,791 describes a two-way telemetry system which displays and monitors physiologic and other patient data of multiple, remotely located patients at a central location. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and a central station which receives, displays, and monitors the patient data received from the remote telemeter. The telemeters communicate with the central station using a two-way TDMA protocol which permits the time sharing of timeslots, and which uses a contention slot to permit telemeters to transmit service requests to the central station. Two-way special diversity is provided using only one antenna and one transceiver on each remote telemeter. The remote telemeters include circuitry for turning off the active transceiver components thereof when not in use (to conserve battery power), and include circuitry for performing a rapid, low-power frequency lock cycle upon power-up. The system has multiple modes of operation, including a frequency hopping (spread spectrum) mode and a fixed frequency mode, both of which preferably make use of the 902-928 MHz ISM band. Patient locators are provided to allow the clinician to track the location of each patient.
[0023] Russo, U.S. Pat. No. 5,807,336 describes a medical apparatus that is provided with a programmable medical device disposed at a first room location and a remote monitor and/or controller disposed at a second room location. The programmable medical device is used to administer a medical treatment to a patient, and the remote monitor/controller may be used to monitor the operation of the medical device, control the operation of the medical device, and/or transfer data from the medical device to the remote monitor/controller. The apparatus may allow voice communication between the remote monitor/controller and the patient who is receiving treatment via the medical device while the medical device is being monitored and/or controlled from the remote location. The remote monitor/controller may also include means for determining the type of medical device to which it is connected.
[0024] Brudny et al., U.S. Pat. No. 5,810,747 describes an interactive intervention training system used for monitoring a patient suffering from neurological disorders of movement or a subject seeking to improve skill performance and assisting their training. A patient (or trainee) station is used in interactive training. The patient (or trainee) station includes a computer. A supervisor station is used by, for example, a medical or other professional. The patient (or trainee) station and the supervisor station can communicate with each other, for example, over the Internet or over LAN. The patient (or trainee) station may be located remotely or locally with respect to the supervisor station. Sensors collect physiologic information and physical information from the patient or subject while the patient or subject is undergoing training. This information is provided to the supervisor station. It may be summarized and displayed to the patient/subject and/or the supervisor. The patient/subject and the supervisor can communicate with each other, for example, via video, in real time. An expert system and neural network determine a goal to be achieved during training. There may be more than one patient (or trainee) station, thus allowing the supervisor to supervise a number of patients/subjects concurrently.
[0025] The prior art teaches the use of electronic measuring and monitoring of patients. However, the prior art does not teach that an automated medication and monitoring system with feedback can be used with such a method that data completeness and accuracy is assured through a novel signal repetition protocol. Also, the prior art does not teach that reporting of health results to the patient may be done in an interactive manner coupled with professional medical advisers helping, through a novel remote communication protocol, to direct optimum patient behavior, including offering of medical supplies and medications associated with an ongoing management program. The present invention fulfills these needs and provides further related advantages as described in the following summary.
SUMMARY OF THE INVENTION
[0026] The present invention teaches certain benefits in data handling methods which give rise to the objectives described below.
[0027] The present invention provides a home care medical data logging, communication, and reporting method that has not been described in the prior art.
[0028] A primary objective of the present invention is to provide such an method having advantages not taught by the prior art and which are capable of accurate medical data recording especially for a non-compliant patient.
[0029] Another objective is to provide such a method capable of assuring the transmission of accurate medical data although a patient is not within data transmission range of a data receiving station for significant periods of time.
[0030] Yet another objective is to provide such a method having means of correlating and reporting health and behavioral status on an interactive basis so as to improve compliance by a reluctant patient.
[0031] A further objective is to provide such a method enabled for offering and motivating a patient to purchase supplies and medications in accordance with a medical care program.
[0032] Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWING
[0033] The accompanying drawings illustrate the present invention. In such drawing:
[0034] FIG. 1 is a schematic block diagram showing the relationship between major elements of the invention;
[0035] FIG. 2 is a schematic block diagram of a typical dispensing device thereof,
[0036] FIG. 3 is a typical printed report of the invention illustrating medication dosing compliance correlated to patient status;
[0037] FIG. 4 is a typical monitor screen display report of the invention illustrating dosing compliance correlated to patient status;
[0038] FIG. 5 is a typical monitor screen display report of the invention illustrating oral medication compliance;
[0039] FIG. 6 is a typical monitor screen display report of the invention illustrating daily sugar level variation for a diabetes patient and showing the measurement device therefor;
[0040] FIG. 7 is a typical monitor screen display of the invention for inputting patient care orders for, in the present case, medication instructions; and
[0041] FIG. 8 is a typical monitor screen display of the invention illustrating a method of delivering health or behavior information with a nurse, clinician or other helper providing audio and video transmission of explanations, information, feedback, suggestions, instruction on ordering medication refills and supplies, behavior modification and control and other invention pertinent communications.
DETAILED DESCRIPTION OF THE INVENTION
[0042] The above described drawing figures illustrate the invention, a system including apparatus and method, for improving patient compliance with a medical program. The medical program may include medication dispensing elements as well as medical state sensing elements or both. The invention is used to monitor and modify medical care and especially patient behavior patterns associated with medication dispensing, medical state sensing and patient behavior with respect to acquisition and maintenance of medical treatment related supplies, wherein the apparatus comprises: a portable medical device means 10 providing, in one embodiment, a medication storing means such as a pill bottle, a medication accessing means such as the cap to the pill bottle, a dispensed medication counting means such as an electronic flip-flop counting circuit 40 with a simple numerical indexer, preferably powered by a battery B1, in communication with the pill bottle cap by any electromechanical, magnetic or other physical element known to one of skill in the art and represented by letter "M" in FIG. 2, such that when the cap is removed from the pill bottle, a switch S1 is made such that the circuit counting means indexes to a next higher numerical value, and a medical device wave energy communicating means such as a radio transceiver 50 is activated. The portable medical device means 10 may include a single dispensing and counting unit or multiple units, and further may include a single counting unit for multiple dispensed items, or multiple counting units (for redundancy) for a single dispensed item; the dispensed medication counting means being enabled for sequencing the counting circuit 40 each time the medication accessing means is manipulated, for gaining access to the medication storing means, the device means 10 being further enabled by a logic circuit 60 for establishing a data set comprising, for example, the current numerical value of the counting circuit 40 and a corresponding time and date of the sequencing of the counting circuit 40 as through the use of a clock circuit 70, the wave energy communicating means 50 being enabled by a control program in the logic circuit 60, for example, for repetitively transmitting, as for example, every 30 minutes, a wave energy signal corresponding to each newly established data set during a selected period of transmission time, as for example 72 hours, the transmission time period being chosen to assure a selected probability of the receipt of said wave energy signal by a base station 20 which is remotely located with respect to the medical device means 10 but which is within practical wave energy receiving range frequently. Because the transmission range of the transceiver is limited by FCC rules, it is conceivable, and quite common for the portable medical device means 10 to be carried by the patient to a location that is not within the range of the base station 20. This would happen on a regular basis if, for instance, the patient was in the habit of taking a walk in the park between 2 PM and 4 PM each day and carries his pill bottle so as to be able to take his 3 PM pills. This dosage would be counted when the pill bottle cap is removed, but could not be received immediately at the base station 20 since the pill bottle would be out of range at that time.
[0043] Another embodiment the invention comprises: the portable medical device means 10 providing a medical state sensing means and the medical device wave energy communicating means 50 of the first embodiment; the medical state sensing means is enabled for sensing a medical state variable, such as body temperature, body weight, blood pressure level, or blood glucose level each time the sensing means, i.e., thermometer, weight scale, sphygmomanometer or blood glucose measurement system, respectively, is manipulated in accordance with any well known medical state variable manipulation protocol, i.e., common to any medical examination office or clinic, and further enabled, by a simple mechanical arrangement "M" such as the use of a sensor for sequencing the electronic counter 40, as described above, each time the sensing means is manipulated and for establishing a data set comprising a value of the measured medical state, a numerical value of the counter 40 and a corresponding time and date of the measurement from the clock circuit 70, the wave energy communicating means 50 being enabled, as above, for repetitively transmitting a wave energy signal corresponding to each newly established data set for a selected period of transmission time, the transmission time period, again, being chosen to assure a selected probability of the receipt of said wave energy signal by the base station 20 as previously described.
[0044] In either embodiment, the invention further preferably comprises a human responsive signaling means, such as an audible alarm or a vibration generating device (not shown), enabled in accordance with the patient's medication and state measurement schedule, referred to below as the "medical schedule," to alert the patient when medication dosing or medical state sensing is required. Such audible and vibration alarms, i.e. , attention demanding techniques, are well known in the personal pager industry.
[0045] Preferably, the base station 20 comprises a base station wave energy communicating means, such as a radio transceiver 50 similar or identical to that of the medical device means 10, and is preferably physically located in the patient's home for example, for enabling reception of at least one repetition of the wave energy signal of the medical device wave energy communicating means 50 and also for transmitting the medical schedule to the medical device means 10, the base station 20 further providing a primary, two-way communicating means 90 shown in FIG. 1, such as a telephony or other communication means, enabled by logic circuits and software programming, as is well known in systems engineering, for automatically transmitting the data set values of the medical device means 10, as received via the wave energy signal, in accordance with a selected communicating schedule. That is to say, the information received at the base station 20 from one or more of the portable medical device means 10 is transmitted via the two-way communicating means 90 to a remote monitoring station 30 , the remote monitoring station 30 further comprising a computation means, such as a general purpose computer, for computing summary information of interest to medical professionals and caregivers and the patient him/herself, such as a correlation analysis between the received data set values and a selected medical state parameter that is being monitored, the remote monitoring station 30 comprising further enablement, by modem or other means, for transmitting information of interest to the primary, two-way communicating means via the secondary, two-way communicating means 90 and for transmitting the selected medical schedule, usually a schedule defined by a primary medical care giver such as the patient's medical doctor. Preferably the base station 20 receives a unique identification code "PB187" representing "pill bottle 187" or "BPM456" representing blood pressure monitor 456," and "1030A-120198" representing a time-date stamp corresponding to, 10:30 AM on Dec. 1, 1998, and, in the case of a medical state measurement, additionally a measured value code such as "125/80" representing blood pressure levels at the time and date of the measurement. Such a transmission would therefore be coded as "BPM456. 1030A-120198.125/80" and may be transmitted in binary coded decimal form or converted to digital form prior to transmission. Other transmissions from the various medical device means 10 may include a low battery status, out of medication, or other supply, "active," "standby," or "inoperative" status, etc. along with the time/date identification. The software protocol used in the medical device means 10 or in the base station 20, or both, is preferably configured for identification of an emergency state, as when blood pressure or glucose level are at a dangerous level. In this case the medical device means 10 will immediately set an audible or other alarm to request a repeat of the measurement by the patient or his caregiver. In the following, and clearly throughout this description and the claims that follow, the use of "patient" should be recognized as including the actual patient, or his immediate caregiver such as a family member or a care provider such as a practical nurse or a medical worker. It is intended that preferably the patient will be active with respect to the present invention, at least in part, but if the patient is not active, a caregiver acts for the patient and as such, the caregiver must be at least frequently in close proximity to the actual patient.
[0046] The base station 20 is configured to immediately send an alarm message to the remote monitoring station 30 for immediate authoritative supervision and decision making, etc. The means for accomplishing these results, i.e., enablement, is most efficaciously completed through software logic programs controlled by microprocessor means within the medical device means 10 and the base station 20 means. Such enablement is considered to be within the ability of those of average skill in the art, and are therefore not defined here in further detail.
[0047] Clearly, the portable medical device means 10 may be any one or more of the well known dispensing devices in use in pharmacy and medicine such as an inhalant dispenser, an intravenous dispensing system, an oral or anal medication dispenser, a topical formulation dispenser, etc., for dispensing a selected dosage of a medicinal inhalant, intravenous medication, medicaments formulated as pills, capsules, caplets or other forms of solid medications or liquid or other forms of internal medications, as well as topical formulations. In each case the medication accessing means, such as a bottle cap, a dispensing tube winder, an inhalant pump, or a IV flow meter, is adapted by any simple well known sensing arrangement to trigger the counting means while simultaneously dispensing a previously selected dosage of the medication. Alternately, the dispensed amount may be controlled by the patient or the on-site caregiver.
[0048] In the preferred embodiment the medical device wave energy communicating means 50 of the medical device means 10 is adapted for accomplishing certain inventive methods, through any common or well known data manipulation process for receiving and implementing the medical schedule as transmitted from the base station 20, a simple matter of data transmission and receival. In this manner, the medication or state sensing schedule is remotely set-up within a memory device or circuit 80 of the medical device means 10, and may also be changed at any time. Also, the remote monitoring station 30 is adapted by these methods, i.e., simple tracking protocols, for composing a refill request message, at appropriate times when its calculations show that supplies are low, and for transmitting the refill request message to the base station 20 to alert the patient by, for instance, illuminating a lamp or presenting a written message on an LCD, or similar display on the base station, and, or on the medical device means 10 .
[0049] Preferably, the methods of the present invention are adapted for composing graphical summary reports showing, for instance, when each medication was, in fact, taken and when each medical measurement was, in fact, completed. Such a history of events may be for a week, month or longer so as to enable the patient to see trends. The portable medical device means 10 of the invention is enabled, by memory device 80, for storing a list of all said data sets established over the selected period of transmission time, e.g., 72 hours, the list being transmitted repetitively at a selected frequency of transmission, e.g., every 30 minutes, so as to improve, through transmission redundancy, the probability of receipt, by the base station 20, of all data sets established by the medical device means 10. In the preferred embodiment, each of the data sets is paired with a check-sum and with a CRC, the base station 20 providing check-sum and CRC error-reducing protocol operating on the data sets as received for providing error reduction. These error checking protocols are well known, but have not been previously used in the field of the present application, and are certainly critically important in the present use.
[0050] In use, the patient notifies the remote monitoring center as to the master medical schedule for medications and/or medical state measurements required. This may be accomplished by telephone, fax, written communication, or internet screen, the latter being illustrated in FIG. 7. A database is established at the remote monitoring center for the patient. The master medical schedule information is downloaded to the base station 20 through the primary and the secondary communicating means, generally via telephony. The base station 20 then transmits an appropriate portion of the master medical schedule to each of the medical device means 10 which will be used by the patient. Each of the medical device means 10 then alerts the patient when a medication or a measurement should be taken. The medical device means 10 continues to remind the patient that such event is required until it is accomplished. The fulfillment of each event is recorded as described above and entered into the event list. The entire list is transmitted to the base station 20, as defined above, every selected period, such as every 30 minutes over a time duration of 72 hours for example or other selected duration. Each time the list is received by the base station 20 it is compared with the resident list at the base station 20 and any blanks in the resident list are filled-in from the newly received list. The duplicate entries are then discarded so that the resultant list is complete and non-redundant.
[0051] The invention further provides a reporting function which is illustrated in FIGS. 3-6 and 8. FIG. 3 illustrates a correlation report which may be used to highlight the importance of behavioral compliance with a medication schedule for maintenance of a health parameter, such as blood pressure level or blood glucose level. Individual data reports are well-known in the medical industry, but graphical reports of patient behavior versus one or more health statistics, as defined by a chart, such as a bar chart, is novel and considered distinct from the prior art.
[0052] Once the reports are generated by the remote monitoring station 30, they are delivered to the patient, to enable action to be taken. Delivery modalities include hardcopy paper reports sent by mail delivery, faxed copies, or internet web-page delivery. The internet web-page delivery is preferred because it economically allows the use of color graphics. Color might be used in FIGS. 4 and 5, for example, to highlight deviations from the scheduled dosage time such that missed dosages or delayed dosages are shown in red and on-time dosages are shown in green. Highlighting good and bad behavior patterns to the patient is functional for establishing improved behavior.
[0053] FIG. 4 illustrates the use of reports similar to FIG. 3, but in a web-page format. Often patients become confused when they must use many different of the medical devices means. FIG. 6 illustrates how information can be more readily associated with a specific device to enhance patient recognition and understanding, i.e., the inclusion of a picture of the device the patient is using. FIG. 6 also shows controls (screen buttons) whereby the patient or local caregiver may send commands pertaining to device settings directly to the remote monitoring station 30. The remote monitoring station 30, in turn, is enabled for relaying these control messages to the base station 20 located in the patient's residence. In this manner, the web-page format is used to provide the patient with information and can also be used by a clinician at a remote location to control a patient's instruments, for example, based upon the health data statistics that are compiled.
[0054] FIG. 7 illustrates how the web-page format can be entirely dedicated to the setup and control of a medical device means 10, such as a medication dispenser. In FIG. 7, a clinician at the remote monitoring center or at any remote location can enter dosing related information and instructions and the medical schedule for that medication dispenser.
[0055] FIG. 8 illustrates an advance in the reporting of medical information to patients. The advance includes the correlation of two or more behavior and/or health data graphics which are constructed from actual measurements of the patient's compliance or health statistics. Further, the report includes a human image and related spoken message which is preferably a video message but may be live. This human image is preferably a clinician, such as a nurse, but may also be a doctor or other primary caregiver. As stated, the message may be delivered in real-time, but is preferably delivered in a stored format, such as by e-mail or a stored streaming video, so that the patient may view it or replay it more than once, at his or her convenience. Such replay is facilitated by a dedicated replay button as shown in the figure. The video message report may include elements of encouragement, education, information, reinforcement, or reprimand, as may be needed to modify the behavior of the patient to comply with instructions. Such elements may further include a list of items which the patient may need or want to purchase or otherwise obtain, such as medication refills, information flyers, insurance information, and miscellaneous items such as flowers, greeting cards, etc. for improving the patient's morale.
[0056] The reports are preferably interactive so as to enable the patient to easily reply to questions or ask questions via a dedicated contact button. Such a button will, in one embodiment, activate an e-mail reply screen, as is well-known, that may generate text, voice or video image formats for composing a reply message. Further, the report includes purchasing reminders, clues or requests made by the clinician image, such as to remind the patient to purchase refills on medication or medical device supplies, such as blood glucose monitoring test strips, to order home supplies such as flowers, books, videos, music recordings, or other household goods, or to order new equipment such as an additional pill bottle for a new medication. Even further, the report allows the patient to respond to such reminders, clues or requests via a "place order" button, as illustrated. The place order button, depending upon the type of account established with the remote monitoring center, and may immediately fulfill the order suggested by the video image or it may lead to order selection and confirmation screens, as is well-known in the art. The interactive report may further include an invitation to reply to any questions posed by the clinician image, or to pose new questions to the clinician image, or to respond to previous questions posed by the patient to the clinician image. Additionally, the clinician image may suggest that the patient replay the video message to reinforce an understanding of its contents. The use of interactive reports as defined herein is considered novel in the present field, so as to distinguish over the prior art.
[0057] The following defines: the preferred manner in which the video reports (screens) are created, preferred screen content, how the screens are used and preferred follow-up action. Please note the use of B-S representing "base station 20" and M-C representing "remote monitoring station 30."
[0058] The video screens are created using the following steps:
[0059] 1. Capture health event data, eg., pill bottle access times, blood pressure, etc.
[0060] 2. Transmit to B-S and store at a predetermined time, forward to M-C and store on Event Record Server, merge and associate health event data with prior patient event data history and patient records. Delete any duplicate entries. At predetermined time, M-C operator accesses event record server and retrieves patient specific information. M-C operator views patient specific information including most recent entries, historical entries, supply and refill status, other pertinent patient specific information. Viewing is preferably done graphically with concurrent charts displayed on screen. M-C operator views patient specific information including most recent entries, historical entries, supply and refill status, other pertinent patient specific information. Viewing is preferably done graphically with concurrent charts displayed on screen. M-C operator activates camera and microphone, preferably mounted on top of monitor (this way operator can speak while viewing patient information). M-C operator dictates video message into camera and microphone. Video message has components of information that preferably may include any or all of the following:
[0061] 1. Familiar commentary (i.e., patient name, recognition of chronic condition, recognition of other household members or pets, mention of hobbies, etc.) as may be necessary to generate rapport.
[0062] 2. Clinical review of graphical record, including specific reference to the concurrent health trend and behavior trend graphics displayed, such graphical records may automatically update as the clinician records the video by pressing the appropriate menu options (i.e, graphical record changes from blood pressure to blood glucose as clinician commentary progresses).
[0063] 3. Health parameter trend information review (e.g., blood glucose).
[0064] 4. Behavioral parameter trend information review (e.g., medication compliance rate).
[0065] 5. Positive behavioral reinforcement statements, recognition of good behavior, encouragement to use good behavior, reminders of goals, e.g., lower blood pressure 10 points, reprimand if not using good behavior, and/or reinforcement to use good behavior.
[0066] 6. Educational information including how devices work, drug and side-effect information, drug and health benefit information, other educational items or referrals to items as may be deemed clinically or socially effective.
[0067] 7. Purchasing information, suggestions, clues and recommendations, as may be needed, based upon the patient record including drug refills, additional monitored devices (e.g., extra pill bottle), device supply refills (e.g., glucose monitoring strips), other medical supply refills (e.g., wound dressings and disinfectants), soft goods, flowers and candy to cheer patient, Books, music, games, and videos (to pass the time while convalescing), Other items as may be needed or recommended to enhance the compliance of the patient with the health program.
[0068] 8. Acknowledgement and reply to prior patient or family caregiver inquiries.
[0069] 9. Recommendation to contact clinician, M-C operator, or other authoritative figure if any questions exist.
[0070] 10. Recommendation to replay video at least once. M-C operator presses "stop recording" button after completing message. M-C operator optionally reviews message and re-records if changes are necessary. M-C operator forwards video message and associated graphical charts to Web-server for storage Web-server receives video message and associated graphical charts. Automatically saves in web or WebTV or other multimedia format.
[0071] The Web-server transfers formatted video message and associated graphical charts to patient or other viewer upon receiving password access from a remotely located web browser. Optionally, the Web-server may be programmed to send an automatic e-mail notification to patient, caregiver and/or clinician that an updated video report is available.
[0072] The video message screens are used as follows: Patient or family caregiver (referred to as the "Viewing Person") decides to check on patient status. The decision is based upon occurrence of a predetermined time to check on status, or a reminder received from M-C, or a change in patient's status, or curiosity or initiative. Viewing Person uses regular PC with internet browser, WebTV, or other commonly known viewing device to access the M-C Web server. Viewing Person enters ID code and password Viewing Person sees patient report including graphical information. Viewing Person presses "Play Video" button to start video message playback. "Play Video" button changes to say "Replay Video". Video message starts playing. Optionally, Viewing Person presses "Replay Video" button to start video message playback. Video message starts playing. Viewing Person presses "Place Orders" button to order suggested supplies and refills. Viewing Person sees list of supplies and refills. Confirms which to send. Presses "Confirm Order" button. Button changes to say "Order will be sent". "Confirm Order" button changes to say "Order will be sent". After 5 seconds, Viewing Person is automatically returned to report page (with graphic reports and video message). Viewing Person presses "Contact Nurse" button. As is well-known in the art, Viewing Person then sees window for outgoing e-mail (however, other outgoing message windows, such as a "create outgoing video message" window may be used for Viewing Persons with a video camera attached to their viewing device). Viewing Person composes message which is sent to M-C (or other authoritative party) and presses "send message" button, as is well-known in the art.
[0073] The pill bottle screen is used as follows: Patient or family caregiver (referred to as the "Viewing Person") decides to check on patient status. The decision is based upon occurrence of a predetermined time to check on status, or a reminder received from M-C, or a change in patient's status, or curiosity or initiative. Viewing Person uses regular PC with internet browser, WebTV, or other commonly known viewing device to access the M-C Web server. Viewing Person enter ID code and password. Viewing Person enters data into blanks for setting reminders, frequency of medication administration, Pill Bottle ID code, and other items as requested. Data for reminders, frequency of medication administration, Pill Bottle ID code, and other items is automatically relayed to M-C Web server. Data for reminders, frequency of medication administration, Pill Bottle ID code, and other items is automatically merged with patient's information database on the Event Record Server. Viewing Person receives text message from M-C Web server: "The next time the Base Station contacts us, we will download the new medication schedule." Viewing Person moves on to other screens, such as the Concurrent Graphs and Video Message Report Screen B-S communication with the M-C proceeds as follows: Data from the B-S is automatically uploaded to Event Record Server. When complete, new schedule data from the Event Record Server is automatically downloaded to the B-S. B-S automatically disconnects when transfer is complete. B-S generates "beep" and visual signal indicating that new schedule information has been received B-S generates visual indicator for which device(s) it has a new schedule. Patient or family caregiver uses data transfer means, either wireless, wave energy or hardwire, to effectuate a link between the device(s) and the B-S. B-S senses the link and automatically transfers data to the appropriate device(s). The unique ID codes prevent the wrong schedule from being loaded into the wrong device. After completing data transfer, the link is disconnected. Patient uses device(s) as directed.
[0074] From above it is seen that the present invention provides for a method for creating video screens in a medical monitoring and control system comprising the sequenced steps:
[0075] a) automatic logging of health event data from dispensing devices and/or medical state measurement devices, into a storage means at the time of such events as enabled by actions of a patient or a patient with the help of a caregiver usually in the patient's home.
[0076] b) automatic transmitting of the health event data to a local base station for storage therein, the base station being generally in the patient's home.
[0077] c) automatic transmitting of the health event data on a predetermined schedule to a remote monitoring center for storage therein, the center being located outside the patient's home and usually in a distant location, possibly near a hospital or doctor's office.
[0078] d) automatic merging of each new transmission of the event data with an existing record of all previously recorded event data from the same base station.
[0079] e) deleting duplicate entries of the event data.
[0080] f) retrieving the event data as an event data report comprising charts, graphs, etc.
[0081] g) medical personnel evaluating of the event data report.
[0082] h) medical personnel recording of comments concerning the event data report, the comments comprising familiar commentary, clinical review of graphical records, health parameter trend information, behavioral parameter trend information, positive behavioral reinforcement, educational information, purchasing information, suggestions, clues and recommendations, acknowledgements and replies, and recommendations.
[0083] i) transmitting or sending the recorded comments of step (h) to storage for saving in multimedia format;
[0084] j) sending the recorded comments of step (i) to the caregiver upon his/her demand.
[0085] k) caregiver viewing of the recorded comment and lists of alternative supplies and refills.
[0086] l) caregiver placing orders for suggested supplies and refills of medications.
[0087] m) caregiver sending an electronic message to a medical personnel.
[0088] Clearly, the above method is facilitated by wireless communication, land line wire based communication and networked communication methods of well known types such as radio, telephone and Internet links, hook-ups, and other enablements.
[0089] As an example of the type of prerecorded information presented in a medical consultation style the following is presented. This video report would, in the present context, be viewed by a home caregiver, but might also be viewed by the patient him/herself or by both the caregiver and the patient. Referring to FIG. 8, the video message for this patient record may be conducted as follows:
[0090] "Hello Bob, this is Nurse Brown from Remote Medical. Please wish your mother a happy birthday for me. I see that she is going to turn 80 later this week. I've reviewed your mother's compliance and vital signs reports. In the first half of the month your mother was very good about taking her medications and her blood glucose level was stable. You can see this on the graph just to the left. But then she went through a period in which she missed her medications and the blood glucose level rose too high and went into the red zone. She seems to be back on track right now. We know that your mother lives alone, so here's what I recommend that you do to help her. Review this chart with your mother and show her how the missed medications affected the blood glucose level. Then have her view the Patient Education Videos for Medication Compliance and Blood Glucose Levels on her WebTV. You can find the videos on the Patient Education page. I also looked at your mother's blood pressure readings. I don't think that the cuff is being put on the arm correctly. I also want you to sit down with her and review the on-line video that shows how this is done with her. Make sure that she can use the blood pressure monitor correctly on her own. Then we can track her blood pressure just like we've been tracking the blood glucose. I also looked at the images of the small ulcer on your mother's leg. It looks like its beginning to heal. Keep it clean and apply the ointment your doctor prescribed. It will probably take a few more weeks to fully heal. Let's see . . . your mother's file also indicates that she used her Emergency Alert Button once last week. We called her within 2 minutes and she told us that it was a false alarm. She had accidentally pressed the button while getting dressed. So we didn't notify you or your sister. This type of false alarm is very common and not a problem for us. Please be assured that we are monitoring her 24 hours a day. If she presses the Alert Button and anything is wrong, we will call you and the other people on the contact list immediately. Lastly, you need to purchase some additional supplies. It's been 30 days since your mother refilled her medications. Also, my computer is telling me that she only has enough Glucose Monitoring Strips for another 10 days. I recommend that you order 2 more boxes. Please press the "Place Order" button directly below me and authorize us to send her more medication and supplies. We can ship everything immediately. Also, if you would like, we can send your mother some flowers on her birthday with a card from you. You can optionally order this from the Refill and Supply page. If you have any questions, press the contact nurse button directly below me and send us an e-mail. Someone will get back to you within the hour. Bob, I know that we have covered a lot of ground in this report today. I encourage you to press the replay button directly below me and go through the list of items at least one more time. We know that you're very concerned about your mother's health. You're doing a good job of caring for her. Let us know if we can help. Good bye."
[0091] It is clear that the above method of communication is effective, surpassing audio only, or written communication methods in its ability to provide not only factual matter, but, quite importantly, in its ability to motivate to action. The message may be played over if necessary to further obtain information not understood, or simply missed on the previous playing.
[0092] While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: | | Assignee/Applicant First: | | Assignee - Standardized: | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 0 | | Inventor: Brown, Eric | | Inventor First: Brown, Eric | | Inventor - Original: Brown, Eric | | Inventor - w/address: Brown Eric,Newport Beach,CA,US | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: GENE SCOTT; PATENT LAW & VENTURE GROUP | | Correspondent - w/Address: GENE SCOTT; PATENT LAW & VENTURE GROUP|3140 RED HILL AVENUE SUITE 150 COSTA MESA, CA 92626-3440, US | | Examiner: | | Publication Country Code: US | | Publication Kind Code: A1 | | Publication Date: 2004-01-22 | | Publication Month: 01 | | Publication Year: 2004 | | Application Number: US200116310A | | Application Country: US | | Application Date: 2001-11-02 | | Application Month: 11 | | Application Year: 2001 | | Application with US Provisional: US200116310A | 2001-11-02 US199871623P | 1998-01-16 | US199870521P | 1998-01-06 | US199888727P | 1998-06-10 | | Priority Number: US199870521P | US199871623P | US199888727P | US1999266647A | | Priority Country: US | US | US | US | | Priority Date: 1998-01-06 | 1998-01-16 | 1998-06-10 | 1999-03-11 | | Priority Date - Earliest: 1998-01-06 | | Priority Month: 01 | 01 | 06 | 03 | | Priority Year(s): 1998 | 1999 | | Earliest Priority Year: 1998 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US199871623P
| 1998-01-16
| -
| -
| Provisional
| -
|
P
| US199870521P
| 1998-01-06
| -
| -
| Provisional
| -
|
P
| US199888727P
| 1998-06-10
| -
| -
| Provisional
| -
|
C
| US200116310A
| 2001-11-02
| -
| -
| -
| -
|
P
| US1999266647A
| 1999-03-11
| -
| -
| Division
| Abandoned
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B000500, G06Q003002, G06Q005024 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
G06Q003002
| G
| G06
| G06Q
| G06Q0030
| G06Q003002
|
G06Q005024
| G
| G06
| G06Q
| G06Q0050
| G06Q005024
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
| G06Q 30/02
A61B 5/0002
G06Q 50/24
| -
| 20130101
20130101
20130101
| EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 604131, 600300, 705003 | | US Class (divided): 604/131, 600/300, 705/003 | | US Class - Main: 604131 | | US Class - Original: 604131 | 600300 | 705003 | | ECLA: G06Q003002, A61B000500B, G06Q005024 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
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| | Count of Citing Patents: 67 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-06-12
| AS
| -
|
| Description: ASSIGNMENT TECHNO VIEW, INC., CALIFORNIA CORRECTIVE ASSIGNMENT TO CHANGE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED AT REEL 12628 FRAME 0721; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:013287/0863 2001-12-21 |
| |
2002-02-22
| AS
| -
|
| Description: ASSIGNMENT TECHNO VIEW, INC., CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNOR:BROWN, ERIC W.; REEL/FRAME:012628/0721 2001-12-21 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
TECHNO VIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 013287/0863
| 2002-06-12
|
| Conveyance: CORRECTIVE ASSIGNMENT TO CHANGE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED AT REEL 12628 FRAME 0721 ASSIGNOR HEREBY CONFIRMS THE ASSIGNMENT OF THE ENTIRE INTEREST. |
| Corresponent: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVENUE, SUITE K-105 COSTA MESA, CA 92626-4613 |
| |
TECHNO VIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 012628/0721
| 2002-02-22
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVENUE, SUITE K-105 COSTA MESA, CA 92626 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
TECHNO VIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 013287/0863
| 2002-06-12
|
| Reassignment (US) - Conveyance - Latest: CORRECTIVE ASSIGNMENT TO CHANGE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED AT REEL 12628 FRAME 0721 ASSIGNOR HEREBY CONFIRMS THE ASSIGNMENT OF THE ENTIRE INTEREST. |
| Reassignment (US) - Corresponent - Latest: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVENUE, SUITE K-105 COSTA MESA, CA 92626-4613 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US20040015132A1
| 20040122
| Brown Eric
| -
|
| Title: Method for improving patient compliance with a medical program |
| |
EP1034734A1
| 20000913
| Brown Eric W.
| BROWN ERIC W
|
| Title: Method for improving patient compliance with a medical program |
| |
JP2000316820A
| 20001121
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM |
| |
TW537880B
| 20030621
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Method for improving patient compliance with a medical program |
| |
US20020055892A1
| 20020509
| Brown Eric
| -
|
| Title: Personalized sales video system |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20040015132A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20040015132A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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|
| Record 39/43 | | US20020055892A1 | Personalized sales video system | | Publication Number: US20020055892A1 | | Title: Personalized sales video system | | Title (Original): Personalized sales video system | | Title (English): Personalized sales video system | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Video sales program compilation method, involves showing graphic slide for selected product and for another product with at least one related product elements a combination and for payment schedule | Abstract:
A video sales program compilation method, especially useful in the sales industry, comprises the steps of displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. | Abstract (English):
A video sales program compilation method, especially useful in the sales industry, comprises the steps of displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. | | Abstract (French): | | Abstract (German): | Abstract (Original):
A video sales program compilation method, especially useful in the sales industry, comprises the steps of displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. | | Abstract (Spanish): | Claims:
What is claimed is:
1. A video sales program compilation method comprising the steps of: displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message.
2. The method of claim 1 including the further step of inserting written sales comments in the sales email message.
3. The method of claim 1 including the further step of inserting a sales promotion element in the sales email message.
4. The method of claim 1 including the further step of inserting a live-action video presentation in the sales email message.
5. An apparatus for producing a video sales program comprising: the elements of a Data Collector, a Browser, a Video Server, an Internet Server and a Pipe, the Pipe enabled for interconnecting the elements for intelligent signal transfer; software means enabled for collecting storing, manipulating and selecting data and for creating graphical and audible representations or Charts of the data, and for visual and audible displaying of the data on a display means; and a means for transmitting said visual and audible displaying of the data via wave energy transmission.
6. A video sales program compilation method comprising the steps of: a) collecting a first information about a group of individuals using an electronic collection process for placing the first information in an electronic format; b) selecting one individual from the group of individuals in accordance with a selection criterion; c) compiling a second information from the first information, the second information corresponding to the selected individual; d) arranging the second information as text and graphics in the electronic format, the graphics comprising at least one of a plurality of data charts; e) producing an electronic video program from the second information; f) formatting the video program for playback, including synchronization of the at least one data charts; g) notifying the selected individual of how to remotely access the video program for viewing through an electronic process; h) playing the video program when requested by the selected individual; and i) receiving an electronic notice when the video program is played by the selected individual.
7. The method of claim 6 further comprising the step of using data collectors to determine preferences of each individual in the group of individuals.
8. The method of claim 6 further comprising the step of using data collectors to predict preferences of each individual in the group of individuals.
9. The method of claim 6 further comprising the step of using data collectors to communicate behavior of each individual in the group of individuals.
10. The method of claim 6 further comprising the step of limiting access to the video program to only the selected individual.
11. The method of claim 6 wherein the process of step (g) is completed using Internet data transfer.
13. The method of claim 6 wherein the notice of step (i) is transferred using an electronic paging process.
14. The method of claim 6 further comprising the step of taking payment for completing steps (a) through (g).
15. The method of claim 14 wherein the payment is calculated as a combination of a rental charge against time plus a use based on a per viewing by the selected individuals.
16. The method of claim 6 further comprising the step of taking payment from the selected individual after completing steps (a) through (i). | | Claims Count: 15 | Claims (English):
What is claimed is:
1. A video sales program compilation method comprising the steps of: displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message.
2. The method of claim 1 including the further step of inserting written sales comments in the sales email message.
3. The method of claim 1 including the further step of inserting a sales promotion element in the sales email message.
4. The method of claim 1 including the further step of inserting a live-action video presentation in the sales email message.
5. An apparatus for producing a video sales program comprising: the elements of a Data Collector, a Browser, a Video Server, an Internet Server and a Pipe, the Pipe enabled for interconnecting the elements for intelligent signal transfer; software means enabled for collecting storing, manipulating and selecting data and for creating graphical and audible representations or Charts of the data, and for visual and audible displaying of the data on a display means; and a means for transmitting said visual and audible displaying of the data via wave energy transmission.
6. A video sales program compilation method comprising the steps of: a) collecting a first information about a group of individuals using an electronic collection process for placing the first information in an electronic format; b) selecting one individual from the group of individuals in accordance with a selection criterion; c) compiling a second information from the first information, the second information corresponding to the selected individual; d) arranging the second information as text and graphics in the electronic format, the graphics comprising at least one of a plurality of data charts; e) producing an electronic video program from the second information; f) formatting the video program for playback, including synchronization of the at least one data charts; g) notifying the selected individual of how to remotely access the video program for viewing through an electronic process; h) playing the video program when requested by the selected individual; and i) receiving an electronic notice when the video program is played by the selected individual.
7. The method of claim 6 further comprising the step of using data collectors to determine preferences of each individual in the group of individuals.
8. The method of claim 6 further comprising the step of using data collectors to predict preferences of each individual in the group of individuals.
9. The method of claim 6 further comprising the step of using data collectors to communicate behavior of each individual in the group of individuals.
10. The method of claim 6 further comprising the step of limiting access to the video program to only the selected individual.
11. The method of claim 6 wherein the process of step (g) is completed using Internet data transfer.
13. The method of claim 6 wherein the notice of step (i) is transferred using an electronic paging process.
14. The method of claim 6 further comprising the step of taking payment for completing steps (a) through (g).
15. The method of claim 14 wherein the payment is calculated as a combination of a rental charge against time plus a use based on a per viewing by the selected individuals.
16. The method of claim 6 further comprising the step of taking payment from the selected individual after completing steps (a) through (i). | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
1. A video sales program compilation method comprising the steps of: displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. | Independent Claims:
1. A video sales program compilation method comprising the steps of: displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; displaying the one product with the related product elements on the screen; calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message.
5. An apparatus for producing a video sales program comprising: the elements of a Data Collector, a Browser, a Video Server, an Internet Server and a Pipe, the Pipe enabled for interconnecting the elements for intelligent signal transfer; software means enabled for collecting storing, manipulating and selecting data and for creating graphical and audible representations or Charts of the data, and for visual and audible displaying of the data on a display means; and a means for transmitting said visual and audible displaying of the data via wave energy transmission.
6. A video sales program compilation method comprising the steps of: a) collecting a first information about a group of individuals using an electronic collection process for placing the first information in an electronic format; b) selecting one individual from the group of individuals in accordance with a selection criterion; c) compiling a second information from the first information, the second information corresponding to the selected individual; d) arranging the second information as text and graphics in the electronic format, the graphics comprising at least one of a plurality of data charts; e) producing an electronic video program from the second information; f) formatting the video program for playback, including synchronization of the at least one data charts; g) notifying the selected individual of how to remotely access the video program for viewing through an electronic process; h) playing the video program when requested by the selected individual; and i) receiving an electronic notice when the video program is played by the selected individual. | Description:
[0001] The present invention claims the priority date of a prior filed provisional patent application having Ser. No. 60/237,886 and an official filing date of Oct. 4, 2000 and which discloses substantially identical matter as described herein.
[0002] Related applications: No. 60/070,521 filed Jan. 6, 1998, No. 60/071,623 filed Jan. 16, 1998, No. 60/088,727 filed Jun. 10, 1998, Ser. No. 09/225, 173 filed Jan. 4, 1999, Ser. No. 09/266,647 filed Mar. 11, 1999, Ser. No. 09/322,209 filed May 28, 1999 and No. 60/188,059 filed Mar. 9, 2000.
BACKGROUND OF THE INVENTION
[0003] 1. Field of the Invention
[0004] This invention relates generally to automated selling methods and more particularly to a method used for creating a video sales presentation especially useful in the medical care field.
[0005] 2. Description of Related Art
[0006] The following art defines the present state of this field:
[0007] Beller et al., U.S. Pat. No. 5,961,446 describes a teleconferencing system using video conferencing between a nurse station and a patient station to deliver medical care. The patient station is programmed to contain customized instructions concerning medications, procedures, or visitations that were placed there by the nurse. The customized audio, video and text information transforms the patient station into a highly personalized information source, which can be reviewed by the patient when the unit is off line. Medical procedures and medications are also programmed into the patient station by the nurse to remind the patient of all scheduled events, including visitations. A record of medical compliance is stored in the patient station, which record is uploaded to the nurse station and compared to the original event schedule. In such manner, the patient station is an intelligent personal medical assistant, programmed by the nurse to provide customized reminders and information necessary for the efficient management of the patient's illness. The patient station is easy to use, including only four large buttons which are re-definable by notations on a video screen, and, for the convenience of the patient, the video camera at the patient station is remotely controlled by the nurse to obtain the desired view without requiring that the patient move.
[0008] Chen et al, U.S. Pat. No. 6,249,281 teaches the use of miniature images of slides to navigate through the playback of a presentation. Selecting one of the miniature images allows the video playback portion of the presentation to fast forward, or reverse, to the corresponding portion of the video message.
[0009] The prior art teaches the use of sales techniques, wide area communications networks, data creation, transmission, storage, retrieval, and display, but does not teach a sales and promotion method capable of selective sales video creation for distance selling to a single customer or to a group of customers with a common interest. The present invention fulfills these needs and provides further related advantages as described in the following summary and detailed description. Further, the prior art does not teach the creation of immediate on-demand video messaging to customers.
SUMMARY OF THE INVENTION
[0010] The present invention teaches certain benefits in construction and use which give rise to the objectives described below.
[0011] A video sales program compilation method, especially useful in dealing with those that are home-bound or at a distance from the product or service provider, such as home care patients or business customers located far from a supplier, comprises the steps of displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen; identifying the relevant interests of the sales customer, displaying plural product pictures on the screen; displaying one selected product from the plural product pictures; displaying related product elements on the screen; selecting from the related product elements; optionally displaying the one product with the related product elements on the screen; optionally calculating a payment schedule for purchase of the one product and the related product elements; creating at least one graphic slide for the one product alone and, optionally, for the one product with at least one of the related product elements as a combination and for the payment schedule; uploading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and optionally receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. The uploading process includes the unique features of automatically recording, storing, encoding, and synchronizing the video portion of the video prior to automatically uploading the corresponding data files to a centralized server that streams the videos to customers on-demand. Users of the system include the End-User, a consumer or student or patient or family health care giver. The Presenter is a person who represents a business or its affiliated or related interests, in using the system. Typically, this person would be a sales representative who is guiding a sales process with the ultimate goal of closing the a sale. However, this person could also be a technical support representative providing assistance with a device or process or similar, or this person could be a coach or trainer providing instruction or education to an End-User.
[0012] A primary objective of the present invention is to provide an apparatus and method of use of such apparatus that provides advantages not taught by the prior art.
[0013] Another objective is to provide such an invention capable of automating a sales process.
[0014] A further objective is to provide such an invention capable of selling to distant customers via a wide area data transmission network.
[0015] A still further objective is to provide such an invention capable of being managed closely without manual supervision.
[0016] Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings illustrate the present invention. In such drawings:
[0018] FIG. 1 is a block diagram of the preferred embodiment of the invention;
[0019] FIG. 2 is a flow diagram showing a first embodiment of the method of use thereof; and
[0020] FIG. 3 is a further flow diagram showing a second embodiment of the method of use thereof.
DETAILED DESCRIPTION OF THE INVENTION
[0021] The above described drawing figures illustrate the invention in at least one of its preferred embodiments, which is further defined in detail in the following description.
[0022] The Personalized Sales Video System comprises personal data collecting devices (Data Collectors). The Data Collectors may include, for example, wave-energy enabled devices which monitor behavior, information formats, such as those that might be presented on a computer screen for data entry, observational systems such as computer instruction sets or programs that monitor database or internet traffic for changes or for finding information, other software enabled systems for determining commercial or personal information, such as purchase process status, e.g., is a consumer seeking product options, or has the consumer decided to buy a particular model and is only seeking a best price, or is the consumer ready to purchase at the offered price but needs to be finally urged to make the purchase, or other such purchase process dynamic status variables. These wave-energy devices are described more thoroughly in related applications: No. 60/070,521 filed Jan. 6, 1998, No. 60/071,623 filed Jan. 16, 1998, No. 60/088,727 filed Jun. 10, 1998, Ser. No. 09/225, 173 filed Jan. 4, 1999, Ser. No. 09/266,647 filed Mar. 11, 1999, Ser. No. 09/322,209 filed May 28, 1999 and No. 60/188,059 filed Mar. 9, 2000. The Data Collectors may also include data entry methods, such as the creation of shopping lists based upon an item desired by the consumer, Internet-enabled browsers (Browser) such as Microsoft Internet Explorer or Netscape Navigator or Mosaic. The Browser may include any Internet-enabled viewing system for text, graphics or a combination of the two. The Data Collectors may also include an information server for database storage and manipulation (Database) such as Microsoft® SQL Server a well known and regarded computer database structure and system. Further, the Data Collectors may include any inference algorithms which are commonly used to predict consumer behavior such as, for example, algorithms which relate date of birth to gender, geographic location, economic status, and previous purchases on credit cards.
Exemplary Architecture
[0023] The system further may comprise a video server means for streaming video images and audio tracks (Video Stream) such as Microsoft Media Server® or Real Networks Video Server®. An Internet server means (Internet Server) is used for sending HTML web pages and other formats of Browser-viewable pages over the internet. An Internet connection means (also referred to as a Pipe) links the Browser, Database, Video Stream and Internet Server with each other and with other Internet users. Preferably, the Pipe has high-bandwidth such as a the well known Ti line, cable modem or DSL approaches. However, ordinary dial-up modems are also sufficient although they function more slowly. Server operating systems such as Windows NT® or Windows 2000 or Unix ® (Server Operating System) is advantageously employed. Depending upon the capabilities of the Server Operating System and the underlying hardware platform, the Database, Video Stream and Internet Servers may reside on the same machine or may reside on several machines that are linked with the Pipe or alternate linking means. End-user operating systems such as Windows 95®, Windows 98®, Windows NT®, Windows ME®, or Windows 2000® are preferably employed in the present invention. However, other operating systems such as Unix® or Linux® may alternately be used. All such operating systems are collectively referred to here as the User Operating System. Video camera or other video capture devices and microphones or other sound capture devices for creating custom videos may be employed. Preferably, the video cameras have parallel or USB connections to a desktop personal computer. The microphone, preferably, links to a sound card or similar circuitry within this personal computer. However, the use of integrated camera/microphones and other formats of cameras and microphones may also be used. Collectively the video capture device and sound capture device are referred to herein as the Camera. An important part of the system are personal computers, such as Pentium II® and Pentium III® based PCs that are commonly available with viewing monitors, keyboards, mouse, speakers and other typical accessories and these are collectively referred to herein as the PC. However this is not a limitation of the invention and the use of older or newer PCs may occur. Also, specialized video creation software (Video Software) for generating custom videos, including controls for recording and setting camera and microphone functions are used. Such Video Software also replays videos after creation and compresses videos for distribution to others using the Video Stream. Means for transferring data from Data Collectors to the Database are used. Such means may include the use of Internet-based forms, physical devices which monitor the behavior of the consumer, or other devices including, but not limited to, devices which receive wave-energy signals from Data Collectors. The data from Data Collect is then stored with related or corresponding information in the Database. The method of sending the information to the Database includes formatting it for transfer via the Pipe and this is well known.
[0024] The system also includes a means for creating graphical representations of data from the Database, typically in the form of illustrations, pictures, time plots and charts. Preferably, multiple graphic representations are shown and synchronized for comparative viewing during the video presentation. The data stored in the Database may include data that is transferred from the Data Collectors. It may also include data that is received from other sources, such as a catalog of products and their affiliated purposes, or a listing of daily interest rates for consumer products, or the daily rate for leasing consumer products such as automobiles. It may further include data that is received from other sources which describes a process or series of steps to perform to accomplish a goal. Any and all such graphical representations are referred to as the Charts.
[0025] The system also includes a means for accessing and graphically viewing pictures of products or illustrations of tangible items or illustrations of process-oriented steps or illustrations representing intangible products, such as a mortgage with a corresponding interest rate, as may be stored on the Database. An example of such a process are the steps necessary to prepare a meal, including making a list of items to procure, preparing the items for cooking, instructions for cooking times, and illustrations of serving suggestions. Another example of such a process are the steps necessary to sell an automobile. These sale closing steps include illustrations of the vehicle and related accessories, colors or other options, graphical charts of loan or lease rates, comparative charts of competing vehicles or financing rate options, and other such charts as is usual and customary for the closing of a sale. Any and all such graphical representations are included when we refer to the Charts.
[0026] The system also includes a means for hearing sound from the audio track of the Video Stream, such as an audio speaker or headphone, a means for seeing moving pictures from the Video Stream such as a projector and screen or a video monitor, a means for determining personalized information from the Database as may apply specifically to a selected end-user, and a means for selecting graphical images from a large database and placing them in a list of selected Charts for later use in random, sequential or repetitive order.
[0027] The system also includes a means for creating a video in a window on a screen while selecting the graphical images from a list. Such images appearing in an adjacent window may be synchronized with a video message mentioning or describing such graphical image.
[0028] The system provides a means for automatically creating a relationship between personalized information about the End-User and the graphical images generated from the Database and the text format data from the Database and provided to the Presenter. For example, the business rules which drive an SQL database provide the means for determining which Charts are offered for display or would be most likely to be used or selected by the Presenter during production of a message to the End-User. Text or a visual message that cues the Presenter to mention appropriate portions of the personalized information in synchronization with selecting the Charts are enabled for display.
[0029] The system is enabled for automatically generating a script or list of points for the Presenter to mention. Such means includes running pre-defined rules on the database to identify-End-Users who are likely to benefit from such information. For example, the management at an automobile dealership might decide that all customers that month would receive a special discount. Likely customers requiring a discount prior to purchase could then be identified automatically from the database and this list provided to the Presenter with a graphic describing the discount.
[0030] Similarly, the Presenter may simply wish to go through his list of potential customers sequentially. In such an application, the system automatically provides the Presenter with the graphical Charts that relate to each individual customer. For example, in an auto dealership, the Data Collectors may identify that a customer is interested in a sports utility vehicle or SUV. When the Presenter accesses this customer or End-User, the system automatically provides the Presenter with related information and Charts on the two models of SUV at the auto dealership and not information and Charts on the other models. In this manner, the Presenter may have the relevant information to close the sales provided to him prior to making the video presentation and thereby allowing him to focus his time and attention on rapidly addressing the End-User and not waste time sorting through inappropriate information. In another such example, a Presenter representing a medical supply firm may use the invention to identify an End-User with diabetes and is automatically provided with Charts corresponding to relevant medical supplies for this End-User. In this example, the Data Collectors may identify when refills are needed and which type of medication is required, thereby allowing the Presenter to have the relevant information and needs of this End-User identified prior to making the presentation. The Presenter is more efficient because he does not have to sort through thousands of different medications and medical supplies to find the Charts corresponding to the needs of the End-User.
[0031] The system is enabled for automatically generating Charts, such as a shopping list or purchasing order form. Such Charts may be generated based upon running pre-defined rules on the database, for example discount coupons on competitive brands such as a coupon for a different brand of aspirin when the Data Collectors indicate that a refill is required or a different brand of automobile tire when the Data Collectors indicate that a certain mileage has likely been reached.
[0032] The system is enabled for allowing the Presenter to review the Charts and personalized information and then take notes for items to mention to the End-User in a video presentation consisting of the Video Stream and synchronized Chart displays. Such notes may optionally be displayed to the End-User.
[0033] The system is enabled for reviewing; including linking to either an internal database of customer notes or an outside program for customer relationship management, such as Goldmine®, and viewing or editing the customer notes.
[0034] The system is enabled for allowing the Presenter to review the Charts and personalized information and then to prepare notes to be displayed to the End-User in a video presentation consisting of the Video Stream and synchronized Chart displays. One or more such Charts would include the display of such notes created by the Presenter.
[0035] The system is enabled for generating information that is of temporal use to the End-User, including presentation of such information in text, graphical or video formats. Such temporal information may be in the form of Alerts or Suggestions. The Alerts might include information about a data parameter that is of interest, such as a special discount being offered to value-minded End-Users. The Suggestions might include purchasing suggestions for upcoming holidays or events, such as a suggestion to purchase a 4-wheel drive vehicle prior to winter. These Alerts and Suggestions are able to be displayed to the End-User. These Alerts and Suggestions are also displayed to the Presenter prior to creation of a Video Stream. The Alerts and Suggestions are one form of automatically generated scripting information.
[0036] The system is enabled for automatically or manually creating a notification to the End-User that the Presenter has completed a video message with synchronized Charts to be shown at the convenience of the End-User. Such notification method means includes, but is not limited to, sending the End-User an e-mail which contains a link that can be selected. Selecting the link then brings up the Browser window in which the video message with synchronized Charts appears. The e-mail message may be generated manually or automatically or a combination. Similarly, the video message may automatically or manually play within the e-mail message, but this embodiment is not as desirable because it requires greater bandwidth and cost to distribute these messages.
[0037] At the option of the Presenter, the system is enabled for allowing multiple End-Users to receive a copy of the same video message with synchronized Charts. For example, in an automobile dealership, the Data Collectors can be used to identify all customers requiring an oil change and single video message with synchronized Charts may be sent to all these End-Users. In another example, in a health care supply firm, a single video message may be sent to all End-Users requiring a medication refill, as determined by the Data Collectors.
[0038] The system is enabled for producing custom prepared videos with associated and synchronized chart presentations which can be made using commonly available software such as Microsoft Netshow or Real Networks Real Presenter. However, the drawbacks of these products include an inability to link directly to databases, a time consuming and expensive method of preparation and delivery, and an inability to randomly select charts while in the midst of creating the video. Also, these products lack the ability to automatically generate scripts for the person creating the video. Furthermore, these products do not automatically identify which Charts are appropriate to a particular End-User.
[0039] As an example of the method of use of the foregoing system, a sales manager for a department or dealership has already used the system administrator pages to authorize a sales representative (rep) to have access. The sales rep will have access only to the customers authorized as (i) this rep's personal customers and (ii) the "sales group" for this rep. A sales manager my use a portion of a cold call list as a sales group, or he may use the list of customers for a single dealership in a multi-dealership business, or he may use a grouping in other ways. The system administrator functions are not detailed here, but they allow the sales manager to push pop-up messages to any or all of the reps; make customer notes by group or individual; and other top-down sales push incentives. This push function allows management to bring specials and deals to the attention of the reps as they might apply to a deal pitch. The system administrator features are fairly extensive and will not be detailed in this Overview document.
[0040] A Customer Record Page is divided into two large vertical boxes. On the left is a scrollable list of customer names. A button above this list toggles between "My Customers" and "All Customers in My Group." The list of customers allows one name to be highlighted at a time using a mouse. On the right is a similar sized vertical box divided into three sections. Each of the three sections has an individual vertical scroll bar. When a customer name on the left is highlighted, the box on the right shows recent shopping events or activity for this customer, such as which make and model, customer data such as contact info, spouse name, important dates, etc., and sales rep notes such as notes that may have been written after an earlier meeting or phone call.
[0041] Each field in these boxes is linked to the Database. In addition, they may also be linked to a dealership CRM system or to an individual sales rep CRM tool such as Goldmine. Any updates, notes, comments, changes, etc. made in boxes 1, 2 or 3 automatically update the appropriate database and CRM tools.
[0042] The sales rep picks a customer that he wants to pitch and hits a "Continue" button at the bottom of the screen. A Create Pitch Page is divided into four primary boxes. On the top left is a scrollable list of graphics and financing terms. Next to this box are buttons entitled "Accessories", "Car Pictures", "Close Deal", and "Discount/Financing Terms." On the bottom left is a display box which shows whatever is selected from the above list. On the top right are the sales rep notes as described above. This box is also interactive and allows the notes to be changed and the appropriate databases to get updated. On the lower right is a display box labeled "Deal Points." Any sentences typed here are automatically turned into bullet points for a custom deal pitch.
[0043] The sales rep has already selected a customer. Now he uses this page to create his pitch. The Data Collectors indicate that this customer is interested in a "BMW 740". The Charts for this model appear as pictures in the box below. The "accessories" for this model also appear and he picks pictures for "chrome wheels" and an "upgraded audio system". As he presses these buttons, the images for the wheels and stereo automatically appear in the box below. The database knows which model wheels and stereo to use based upon the vehicle model. The sales rep presses "Discount/Financing" and selects "36-month lease no accessories" and "36-month lease option 2 with accessories". He also sees a pop-up message from his sales manager that says "any BMW 740 sale closed in the next 48 hours gets a $500 bonus gift certificate for the customer and $500 cash for the sales rep". So he selects "instant $500 bonus certificate". The database automatically calculates the lease options with current rates for that day. The sales rep does not have to do any manual computations. The sales rep has pointed with the mouse and clicked nine times so far. We target fewer than 12 clicks to create the pitch. Now the sales rep rereads the notes about the customer. He sees that the customer mentioned liking gourmet food and wine in their last conversation. He now clicks on the box called "Deal Points" and begins typing: "$700/month for new car $18/month extra for chrome wheels $12/month extra for audiophile system. Buy today and get $500 gift certificate at the local Wine Cellar."
[0044] He clicks on "continue" and goes to the next page. The software system of this invention automatically creates a JPEG graphic slide for each selected item including pictures, lease charts and deal points. As an option, the system can also create HTML graphics that have clickable links to other pages or popups.
[0045] In training nurses to use a nearly identical page for a medical care help application, we found that most people mastered the creation page in about 15 minutes. After mastering this page, most people created presentations in about 60 seconds. It's very intuitive and most people seem to know what they want to show and say before they begin recording because they have been provided with the relevant consumer information and therefore, do not have to focus on finding such information from a vast collection of imagery.
[0046] A Record Pitch Page has one large box for the graphic slide images and one scroll box with the list of the JPEG graphic slides across the middle of the page. In the upper left is a small box that displays the video camera image of the sales rep. In the upper right are customer and product identification information, and an elapsed time counter. In the lower left is a "Record" button that toggles into a "Stop" button. The sales rep is now ready to create his closing pitch to the customer. The images may appear as clickable miniature sized pictures or text that correspond to the image to be contemporaneously displayed. He clicks on "740 image" and it appears in the display box. This will be his opening image. After he clicks "record" he will begin talking and clicking on the other image names. Whenever he clicks on an image, it will be synched to appear at that exact moment in his audio pitch. He can click on an image more than once if he wants it to reappear, such as beginning and ending his pitch with a picture of the car. The sales rep makes a pitch to buy the car, the upgraded accessories that only cost $30/month more on the lease, aid ends by offering the customer a $500 gift certificate to any local store, such as a wine store, if he acts by a deadline date. He watches the elapsed timer to keep it under 90 seconds. The sales rep clicks "stop" and the video is done. He clicks "continue" to go to the next page. In training of both health care professionals and others on the similar CareHelper.com page, we found that most people mastered this page in about 5 minutes and described the video creation as fun. After mastering the page, most videos were created in under 60 seconds. A "Playback and Deliver" page is used to allow the sales rep to review his pitch and decide whether to revise the video or deliver it to the customer. If he hits the "playback" button, the page transforms to show a small video box and a large flipchart box. The video plays and the Charts flip in synch with the audio track. If he hits the "deliver" button, the customer name and e-mail address pop up. There is a window for a text message to be delivered with an e-mail notification. The sales rep types "Bob, I've got a special deal for you. Click on the link below and the details will be explained. Take care and thanks for your business. Sincerely, Willie". In an enhanced version of the software, this page comes up with a list of templates for e-mail text messages. The templates have a pre-determined message which includes variables that automatically fill-in the corresponding information for Presenter, End-User, Subject, and message body.
[0047] The sales rep hits the send button and moves to the beginning to prepare for another customer.
[0048] The message sent is received by the customer as an e-mail message appearing in the customer's in-box from the sales rep. Bob, the customer, opens the e-mail and reads the text message from Willie. At the bottom of the e-mail is a link that can be pressed. The link has lots of code numbers and letters in it. The customer presses the link and his web-browser automatically opens to a secure page with dealer logo branding. Simultaneously, a message automatically is sent to our server that logs the viewing time of the user and enters it into the CRM and database software. The server then sends an e-mail viewing notice to the sales rep and, optionally, sends a text message to the sales rep's pager which includes the telephone number of the recipient and the time of viewing. The customer page has a large graphics window and a video window. A floating pop-up download bar automatically appears that says "Loading Special Video Message from Willie for Bob". Depending upon modem speed, the bar is completed in 15-90 seconds. Then the video begins playing automatically and the image charts begin flipping in sync with the audio track. On this page are also buttons that say "Buy Now--No Accessories", "Buy Now--with Accessories", "Not Now, Keep in Touch" and "Replay". If he presses a buy button, he will be brought to a pre-filled lease contract with pricing and a credit card payment screen. If he presses "Not Now" then a canned thank you, message is displayed. There is also a box where the customer can type a message to be sent back to the sales rep. Since the sales rep has received a pager notification of this viewing event, he uses his discretion as a sales professional to time his follow-up with the customer.
[0049] The "Replay" button is self-explanatory. The system has the ability to log whatever buttons the customer presses and when he presses them.
[0050] The Sales Station is the PC workstation that a Presenter uses to access the Database and create the Video Stream. The "Data Collector" are web-based forms which link to the "Database". The Browser also allows the End-User to create, view, access, modify and otherwise interact with a Shopping List Manager, previously disclosed, or with an internet-based car buying website. This is another form of a Data Collector in which information is collected from the End-User regarding personal shopping habits or desires. The Alerts, Suggestions, Reminders, Shopping List information, Database information, and Charts formed from the Database information all are enabled to appear on the Sales Station screens. The Presenter is able to select any or all of these items, in any order including repeating any items, while creating the Video Stream. These are then saved, compressed and displayed to the End-User in sync with the video message after the End-User opens an e-mail with a selectable link. Such Video Stream message include purchasing or inventory status information, reminders to make purchases, reassurance, rapport-generating statements, educational information, financing information and/or other information or commentary as may be deemed advisable by the Presenter to close the sale. Samples of such video commentary were previously disclosed in the above mentioned patent applications.
[0051] The preferred embodiment described herein describes examples of using the invention for automobile sales applications. It should be noted, however, that the technology can just as easily be applied to applications outside of auto sales and no limitation on usage is implied. For example, the System could be used with a healthy consumer undergoing a diet and exercise program. The Data Collectors would measure body fat, calories burned, distance walked, and body weight. The shopping list would include diet bars and powders. A fitness consultant, rather than a sales representative, would be the Presenter. The fitness consultant would recommend new exercises, provide encouragement and support, and suggest purchases of appropriate nutritional supplements. The End-User would use the Browser to receive this information, including Video Streams from the fitness consultant with selected synchronized charts. In another example, the System could be used with a consumer looking to purchase cruise ship tickets or automobiles. The Data Collectors would include forms about their interest in different destinations or vehicle models. The Charts would include images of different destination, accommodations, vehicle features, and/or financing options for the trip or vehicle purchase.
[0052] In such a manner, the invention disclosed herein, which is based on technology previously disclosed, has application in many fields including health, fitness, diet, nutrition, travel, and consumer purchases.
[0053] Likewise, the invention has applications in many forms of business-to-business relationships. For example, the System could be used by sales representatives for companies selling integrated circuits and electronic components to manufacturers of electronic devices. The Presenter would be the sales rep of the component provider. The End-User would be the purchasing agent of manufacturer. The Data Collection devices would include the manufacturer's inventory database system. The Video Stream would include data about needed components including Charts which illustrated products, showed graphical representations of inventory usage or status, and automatically generated purchase order forms for the End-User to approve. In this manner, in all fields of business and commerce, the described invention offers a low-cost method by which status-reporting and sales-generating data can be deployed to the purchasers of products.
[0054] From the foregoing it is clear that the method of the present invention may be further described as follows:
[0055] A video sales program compilation method comprising the steps of displaying customer information on a computer monitor screen; selecting a sales customer from a list of sales customers on the screen by judging from the customer information which customer is likely to make a purchase; displaying plural product pictures on the screen; displaying one selected product from the plural product pictures whereby the selected product is judged to be a likely match to the selected customer; displaying related product elements on the screen such as options, accessories, add-ons and the like; selecting from the related product elements those that might be likely to add to the sales potential of the product; displaying the one product with the related product elements on the screen in a manner that provides a compelling sales possibility; calculating a payment schedule for purchase of the one product and the related product elements to provide an acceptable set of choices to the customer and one that is likely to be accepted; creating at least one graphic slide for the one product alone and for the one product with at least one of the related product elements as a combination and for the payment schedule to produce a compelling visual and audible sales presentation; downloading the at least one graphic slide including a purchase selection element as a sales email message to the sales customer; and receiving an acceptance of the purchase selection element by the customer as a response to the sales email message. If a sale is not consummated, the presentation may be considered as a trial and revised to meet the objections of the customer until a sale is made. Clearly, written sales comments may be inserted into the sales email message as described above. Further, a sales promotion element may be inserted into the sales email message. The email or other electronic communication may be fitted with a streaming video or other live-action video presentation.
[0056] The above method is carried-out with an apparatus for producing a video sales program comprising at least the elements of a Data Collector, a Browser, a Video Server, an Internet Server and a Pipe, the Pipe enabled for interconnecting the elements for intelligent signal transfer as is described in detail above. A software means is enabled for collecting storing, manipulating and selecting data and for creating graphical and audible representations or Charts of the data, and for visual and audible displaying of the data on a display means. Such software is available, as stated above, in the commercial marketplace and also may be customized for use in the present method. A means for transmitting the visual and audible displays of the data via wave energy transmission are well known in the art.
[0057] While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto. Rather, the scope of the invention is to be interpreted only in conjunction with the appended claims. | | Assignee/Applicant: | | Assignee/Applicant First: | | Assignee - Standardized: | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 0 | | Inventor: Brown, Eric | Cheng, Wen, Chung | | Inventor First: Brown, Eric | | Inventor - Original: Brown, Eric | Cheng, Wen, Chung | | Inventor - w/address: Brown Eric,Newport Beach,CA,US | Cheng Wen Chung,La Palma,CA,US | | Inventor Count: 2 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: Patent Law & Venture Group | | Correspondent - w/Address: Patent Law & Venture Group|Suite K-105 3151 Airway Ave. Costa Mesa, CA 92626, US | | Examiner: | | Publication Country Code: US | | Publication Kind Code: A1 | | Publication Date: 2002-05-09 | | Publication Month: 05 | | Publication Year: 2002 | | Application Number: US2001971161A | | Application Country: US | | Application Date: 2001-10-04 | | Application Month: 10 | | Application Year: 2001 | | Application with US Provisional: US2001971161A | 2001-10-04 US199870521P | 1998-01-06 | US2000237886P | 2000-10-04 | US199871623P | 1998-01-16 | US2000188059P | 2000-03-09 | US199888727P | 1998-06-10 | | Priority Number: US199870521P | US199871623P | US199888727P | US2000188059P | US2000237886P | | Priority Country: US | US | US | US | US | | Priority Date: 1998-01-06 | 1998-01-16 | 1998-06-10 | 2000-03-09 | 2000-10-04 | | Priority Date - Earliest: 1998-01-06 | | Priority Month: 01 | 01 | 06 | 03 | 10 | | Priority Year(s): 1998 | 2000 | | Earliest Priority Year: 1998 | Related Application Table: | Parent/Child | Application Number | Application Date | Publication Number | Publication Date | Type of Relationship | Status |
|---|
P
| US199870521P
| 1998-01-06
| -
| -
| Provisional
| -
|
P
| US2000237886P
| 2000-10-04
| -
| -
| Provisional
| -
|
P
| US199871623P
| 1998-01-16
| -
| -
| Provisional
| -
|
P
| US2000188059P
| 2000-03-09
| -
| -
| Provisional
| -
|
P
| US199888727P
| 1998-06-10
| -
| -
| Provisional
| -
|
| | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: G06Q003002, G06Q003006 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
G06Q003002
| G
| G06
| G06Q
| G06Q0030
| G06Q003002
|
G06Q003006
| G
| G06
| G06Q
| G06Q0030
| G06Q003006
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
| G06Q 30/0643
G06Q 30/02
| -
| 20130101
20130101
| EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: 7050272, 705027 | | US Class (divided): 705/0272, 705/027 | | US Class - Main: 7050272 | | US Class - Original: 705027 | | ECLA: G06Q003002, G06Q00300643 | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
US20080292265A1
| 2008-11-27
| -
|
US20090310103A1
| 2009-12-17
| SEARETE LLC
|
US20110057878A1
| 2011-03-10
| -
|
US8332789B2
| 2012-12-11
| PERRY JEFFREY ROBERT
|
US8602564B2
| 2013-12-10
| JUNG EDWARD K Y
|
US8608321B2
| 2013-12-17
| JUNG EDWARD K Y
|
US8641203B2
| 2014-02-04
| JUNG EDWARD K Y
|
US8669936B2
| 2014-03-11
| MOORE JOHN S
|
US8712741B2
| 2014-04-29
| PERRY JEFFREY ROBERT
|
US8723787B2
| 2014-05-13
| JUNG EDWARD K Y
|
US8733952B2
| 2014-05-27
| JUNG EDWARD K Y
|
US8763030B2
| 2014-06-24
| Unityworks! LLC
|
US8820939B2
| 2014-09-02
| JUNG EDWARD K Y
|
US8857999B2
| 2014-10-14
| JUNG EDWARD K Y
|
US8893171B2
| 2014-11-18
| WORTHEN WILLIAM C
|
US8936367B2
| 2015-01-20
| JUNG EDWARD K Y
|
US8939586B2
| 2015-01-27
| JUNG EDWARD K Y
|
US8944608B2
| 2015-02-03
| JUNG EDWARD K Y
|
US8955984B2
| 2015-02-17
| JUNG EDWARD K Y
|
US8966369B2
| 2015-02-24
| WORTHEN BILLIE C
|
| | Count of Citing Patents: 20 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-01-28
| AS
| -
|
| Description: ASSIGNMENT TECHNOVIEW, INC., CALIFORNIA ASSIGNMENT OF ASSIGNORS INTEREST; ASSIGNORS:BROWN, ERIC W.; CHENG, WEN CHUNG; REEL/FRAME:012556/0418 2001-12-21 |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | Reassignment (US) Table: | Assignee | Assignor | Date Signed | Reel/Frame | Date |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 012556/0418
| 2002-01-28
|
CHENG, WEN CHUNG
| 2001-12-21
|
| Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Corresponent: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVENUE, SUITE K-105 COSTA MESA, CA 92626-4613 |
| |
| Reassignment (US) Table - Latest: | Reassignment (US) - Assignee - Latest | Reassignment (US) - Assignor - Latest | Reassignment (US) - Date Signed - Latest | Reassignment (US) - Reel-Frame - Latest | Reassignment (US) - Date - Latest |
|---|
TECHNOVIEW INC.,NEWPORT BEACH,CA,US
| BROWN, ERIC W.
| 2001-12-21
| 012556/0418
| 2002-01-28
|
CHENG, WEN CHUNG
| 2001-12-21
|
| Reassignment (US) - Conveyance - Latest: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
| Reassignment (US) - Corresponent - Latest: PATENT LAW & VENTURE GROUP GENE SCOTT 3151 AIRWAY AVENUE, SUITE K-105 COSTA MESA, CA 92626-4613 |
| |
| | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
US20020055892A1
| 20020509
| Brown Eric
| -
|
| Title: Personalized sales video system |
| |
EP1034734A1
| 20000913
| Brown Eric W.
| BROWN ERIC W
|
| Title: Method for improving patient compliance with a medical program |
| |
JP2000316820A
| 20001121
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: METHOD FOR IMPROVING COMPLIANCE OF PATIENT WITH MEDICAL PROGRAM |
| |
TW537880B
| 20030621
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Method for improving patient compliance with a medical program |
| |
US20040015132A1
| 20040122
| Brown Eric
| -
|
| Title: Method for improving patient compliance with a medical program |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20020055892A1&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=US20020055892A1&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 40/43 | | AU200118183A | Apparatus and method for improving patient compliance with a medical program | | Publication Number: AU200118183A | | Title: Apparatus and method for improving patient compliance with a medical program | | Title (Original): | | Title (English): Apparatus and method for improving patient compliance with a medical program | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Method for improving patient compliance with medical program, involves use by outpatient of portable dispensing and data-collection devices communicating with local base station reporting periodically to remote monitor station | Abstract:
| | Abstract (English): | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: REMOTE MEDICAL CORP | | Assignee/Applicant First: REMOTE MEDICAL CORP | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | LITTLEFIELD JAMES A | CONNAUGHTON MARK F | HUANG JAY Q | XIE XIAOHUO | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | LITTLEFIELD JAMES A | CONNAUGHTON MARK F | HUANG JAY Q | XIE XIAOHUO | | Inventor Count: 5 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: AU | | Publication Kind Code: A | | Publication Date: 2001-10-15 | | Publication Month: 10 | | Publication Year: 2001 | | Application Number: AU200118183D | | Application Country: AU | | Application Date: 2000-09-10 | | Application Month: 09 | | Application Year: 2000 | | Application with US Provisional: AU200118183D | 2000-09-10 | | Priority Number: US2000542586A | WO2000US40862A | | Priority Country: US | WO | | Priority Date: 2000-04-04 | 2000-09-10 | | Priority Date - Earliest: 2000-04-04 | | Priority Month: 04 | 09 | | Priority Year(s): 2000 | | Earliest Priority Year: 2000 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B00050205, G06F001900, A61B000500, A61B0005022 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B00050205
| A
| A61
| A61B
| A61B0005
| A61B00050205
|
G06F001900
| G
| G06
| G06F
| G06F0019
| G06F001900
|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
A61B0005022
| A
| A61
| A61B
| A61B0005
| A61B0005022
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
Current
Current
Current
| G06F 19/322
A61B 5/02055
A61B 5/7435
G06F 19/324
G06F 19/3418
G06F 19/3456
G06F 19/3487
| A61B 5/0002
A61B 5/022
A61B 5/14532
| 20130101
20130101
20130101
20130101
20130101
20130101
20130101
| EP
EP
EP
EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: G06F001932C, A61B00050205B, A61B000574D6, G06F001932E, G06F001934C, G06F001934L, G06F001934P, K61B000500B, K61B0005022, K61B0005145G | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | | INPADOC Legal Status Table: | | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
AU200118183A
| 20011015
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Apparatus and method for improving patient compliance with a medical program |
| |
WO2001074229A2
| 20011011
| BROWN Eric W.
| REMOTE MEDICAL CORP
|
| Title: APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
WO2001074229A3
| 20020502
| XIE Xiaohuo
| REMOTE MEDICAL CORP
|
| Title: IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU200118183A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU200118183A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 41/43 | | WO2001074229A3 | IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Publication Number: WO2001074229A3 | | Title: IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (Original): APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (English): IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM | | Title (French): APPAREIL ET PROCEDE PERMETTANT A UN PATIENT DE MIEUX RESPECTER UN PROGRAMME MEDICAL | | Title (German): | | Title (Spanish): | | Title - DWPI: Method for improving patient compliance with medical program, involves use by outpatient of portable dispensing and data-collection devices communicating with local base station reporting periodically to remote monitor station | Abstract:
A portable medical dispensing and data taking devices (20) for an out-patient which communicates with a base station (20). The base station (20) further communicates with a remote station (30).
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | Abstract (English):
A portable medical dispensing and data taking devices (20) for an out-patient which communicates with a base station (20). The base station (20) further communicates with a remote station (30). | Abstract (French):
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | | Abstract (German): | Abstract (Original):
A portable medical dispensing and data taking devices (20) for an out-patient which communicates with a base station (20). The base station (20) further communicates with a remote station (30).
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments.
La présente invention concerne un appareil et un procédé d'équipement médical. Ce procédé consiste à utiliser des dispositifs de distribution de médicaments et de prise de données portables, qui sont conçus pour être utilisés par un patient externe et pour communiquer avec une station de base, généralement à l'intérieur du domicile du patient. Ladite station de base communique de manière périodique avec une station de commande à distance, qui charge un programme médical sur la station de base et, par conséquent, sur les dispositifs portables, et reçoit également des informations concernant l'habitude et l'état médical, issues du patient, par l'intermédiaire desdits dispositifs portables et de la station de base. L'utilisation d'un protocole de répétition de transmission permet d'assurer avec une grande certitude que les informations du patient seront bien reçues par la station à distance. La station à distance surveille les activités et l'état du patient et génère des rapports et des requêtes de remplissage lorsque les fournitures se trouvent à un niveau bas. Les présentations au patient sont effectuées au moyen d'Internet ou d'autres techniques simplifiées, qui affichent notamment des graphiques historiques, tout en décrivant des caractéristiques importantes et en recommandant des achats de fournitures et de médicaments. | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: REMOTE MEDICAL CORPORATION,US | | Assignee/Applicant First: REMOTE MEDICAL CORPORATION,US | | Assignee - Standardized: REMOTE MEDICAL CORP | | Assignee - Original: REMOTE MEDICAL CORPORATION | | Assignee - Original w/address: REMOTE MEDICAL CORPORATION,US | | Assignee Count: 1 | | Inventor: XIE, Xiaohuo | | Inventor First: XIE, Xiaohuo | | Inventor - Original: XIE, Xiaohuo | | Inventor - w/address: XIE Xiaohuo,US | | Inventor Count: 1 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: WO | | Publication Kind Code: A3 | | Publication Date: 2002-05-02 | | Publication Month: 05 | | Publication Year: 2002 | | Application Number: WO2000US40862A | | Application Country: WO | | Application Date: 2000-09-10 | | Application Month: 09 | | Application Year: 2000 | | Application with US Provisional: WO2000US40862A | 2000-09-10 | | Priority Number: US2000542586A | | Priority Country: US | | Priority Date: 2000-04-04 | | Priority Date - Earliest: 2000-04-04 | | Priority Month: 04 | | Priority Year(s): 2000 | | Earliest Priority Year: 2000 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B00050205, G06F001900, A61B000500, A61B0005022 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B00050205
| A
| A61
| A61B
| A61B0005
| A61B00050205
|
G06F001900
| G
| G06
| G06F
| G06F0019
| G06F001900
|
A61B000500
| A
| A61
| A61B
| A61B0005
| A61B000500
|
A61B0005022
| A
| A61
| A61B
| A61B0005
| A61B0005022
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
Current
Current
Current
| G06F 19/322
A61B 5/02055
A61B 5/7435
G06F 19/324
G06F 19/3418
G06F 19/3456
G06F 19/3487
| A61B 5/0002
A61B 5/022
A61B 5/14532
| 20130101
20130101
20130101
20130101
20130101
20130101
20130101
| EP
EP
EP
EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: G06F001932C, A61B00050205B, A61B000574D6, G06F001932E, G06F001934C, G06F001934L, G06F001934P, K61B000500B, K61B0005022, K61B0005145G | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
US5950632A
| 1999-09-14
| Reber William L.
| MOTOROLA INC
| X
| 0 (Examiner)
|
| Title: Medical communication apparatus, system, and method |
| |
US5827180A
| 1998-10-27
| Goodman David F.
| LIFEMASTERS SUPPORTED SELFCARE
| Y
| 0 (Examiner)
|
| Title: Method and apparatus for a personal health network |
| |
US6259355B1
| 2001-07-10
| Chaco John
| ELOT INC
| YE
| -
|
| Title: Patient care and communication system |
| |
US5553609A
| 1996-09-10
| Chen Yaobin
| VISITING NURSE SERVICE INC
| Y
| 0 (Examiner)
|
| Title: Intelligent remote visual monitoring system for home health care service |
| |
| | Count of Cited Refs - Patent: 4 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
US8380531B2
| 2013-02-19
| INVIVODATA INC
|
US8433605B2
| 2013-04-30
| HUFFORD MICHAEL
|
| | Count of Citing Patents: 2 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2004-06-15
| NENP
| -
|
| Description: NON-ENTRY INTO THE NATIONAL PHASE IN: JP |
| |
2003-05-14
| 122
| -
|
| Description: EP: PCT APP. NOT ENT. EUROP. PHASE |
| |
2002-09-12
| REG
| -
|
| Description: REFERENCE TO NATIONAL CODE DE 8642 IMPACT ABOLISHED FOR DE - I.E. PCT APPL. NOT ENT. GERMAN PHASE |
| |
2001-12-05
| 121
| -
|
| Description: EP: THE EPO HAS BEEN INFORMED BY WIPO THAT EP WAS DESIGNATED IN THIS APPLICATION |
| |
2001-10-11
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0174229 A2 GH; GM; KE; LS; MW; MZ; SD; SL; SZ; TZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2001-10-11
| AK
| +
|
| Description: DESIGNATED STATES WO 0174229 A2 AE; AG; AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; BZ; CA; CH; CN; CR; CU; CZ; DE; DK; DM; DZ; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MA; MD; MG; MK; MN; MW; MX; MZ; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; TZ; UA; UG; UZ; VN; YU; ZA; ZW |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: XX N AE;AG;AL;AM;AT;AU;AZ;BA;BB;BG;BR;BY;BZ;CA;CH;CN;CR;CU;CZ;DE;DK;DM;DZ;EE;ES;FI;GB;GD;GE;GH;GM;HR;HU;ID;IL;IN;IS;JP;KE;KG;KP;KR;KZ;LC;LK;LR;LS;LT;LU;LV;MA;MD;MG;MK;MN;MW;MX;MZ;NO;NZ;PL;PT;RO;RU;SD;SE;SG;SI;SK;SL;TJ;TM;TR;TT;TZ;UA;UG;UZ;VN;YU;ZA;ZW | AP R GH;GM;KE;LS;MW;MZ;SD;SL;SZ;TZ;UG;ZW | EA R AM;AZ;BY;KG;KZ;MD;RU;TJ;TM | EP R AT;BE;CH;CY;DE;DK;ES;FI;FR;GB;GR;IE;IT;LU;MC;NL;PT;SE | OA R BF;BJ;CF;CG;CI;CM;GA;GN;GW;ML;MR;NE;SN;TD;TG | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
WO2001074229A3
| 20020502
| XIE Xiaohuo
| REMOTE MEDICAL CORP
|
| Title: IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
AU200118183A
| 20011015
| BROWN ERIC W
| REMOTE MEDICAL CORP
|
| Title: Apparatus and method for improving patient compliance with a medical program |
| |
WO2001074229A2
| 20011011
| BROWN Eric W.
| REMOTE MEDICAL CORP
|
| Title: APPARATUS AND METHOD FOR IMPROVING PATIENT COMPLIANCE WITH A MEDICAL PROGRAM |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2001074229A3&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2001074229A3&format=gif&fponly=1 | | Record Source: Result Set | | Top |
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| Record 42/43 | | WO2000002478A2 | HYDRAULIC SURGICAL SYSTEM | SYSTEME CHIRURGICAL HYDRAULIQUE | | Publication Number: WO2000002478A2 | | Title: HYDRAULIC SURGICAL SYSTEM | SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (Original): SYSTEME CHIRURGICAL HYDRAULIQUE | HYDRAULIC SURGICAL SYSTEM | SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (English): HYDRAULIC SURGICAL SYSTEM | | Title (French): SYSTEME CHIRURGICAL HYDRAULIQUE | | Title (German): | | Title (Spanish): | | Title - DWPI: Hydraulic unit for driving surgical device uses pair of stepper motor driven syringes to produce forward and backward pressure sources | Abstract:
A system which produces movement of a surgical device based on applied hydraulic fluid. A piston with a fixed wiper, and movable outer housing transmits its motion, caused by hydraulic pressure, to the surgical device, located remotely. The pressure is produced by stepper motors which drive syringes to produce the pressure.
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | Abstract (English):
A system which produces movement of a surgical device based on applied hydraulic fluid. A piston with a fixed wiper, and movable outer housing transmits its motion, caused by hydraulic pressure, to the surgical device, located remotely. The pressure is produced by stepper motors which drive syringes to produce the pressure. | Abstract (French):
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | | Abstract (German): | Abstract (Original):
A system which produces movement of a surgical device based on applied hydraulic fluid. A piston with a fixed wiper, and movable outer housing transmits its motion, caused by hydraulic pressure, to the surgical device, located remotely. The pressure is produced by stepper motors which drive syringes to produce the pressure.
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues.
L'invention concerne un système qui produit un mouvement d'un dispositif chirurgical sous l'effet d'un fluide hydraulique appliqué. Un piston pourvu d'un segment racleur fixe et d'un logement extérieur mobile transmet son mouvement, causé par pression hydraulique, au dispositif chirurgical, lequel se trouve à distance. La pression est due à des moteurs pas-à-pas qui entraînent les seringues. | | Abstract (Spanish): | Claims:
What is claimed:
1. A surgical system comprising:
an interface to a surgical instrument which has a movable part, said interface including a pressure sensitive device that is sensitive to pressure difference and moves based on said pressure differences; and a source of hydraulic pressure, including two separate parts, a first part producing a forward thrust force for said pressure sensitive device, and a second part producing a backward thrust force for said pressure sensitive device.
2. A system as in claim 1, wherein said pressure sensitive device is a piston in a pressure-sealed chamber.
3. A system as in claim 2, further comprising a controller which electronically controls said source of hydraulic pressure, said source being controlled to produce positive pressure in both of said first and second parts.
4. A system as in claim 3, wherein said first and second parts include medical syringes which are moved to produce said pressure.
5. A surgical system, comprising:
a source of hydraulic pressure; and a handpiece, connected to said source of hydraulic pressure, said handpiece including a first internal bore, including a device connected to receive said hydraulic pressure, and a second internal bore, substantially parallel to said first internal bore but spaced therefrom, and having a surgical element therein connected to be moved by said device in said first internal bore. | | Claims Count: 5 | Claims (English):
What is claimed:
1. A surgical system comprising:
an interface to a surgical instrument which has a movable part, said interface including a pressure sensitive device that is sensitive to pressure difference and moves based on said pressure differences; and a source of hydraulic pressure, including two separate parts, a first part producing a forward thrust force for said pressure sensitive device, and a second part producing a backward thrust force for said pressure sensitive device.
2. A system as in claim 1, wherein said pressure sensitive device is a piston in a pressure-sealed chamber.
3. A system as in claim 2, further comprising a controller which electronically controls said source of hydraulic pressure, said source being controlled to produce positive pressure in both of said first and second parts.
4. A system as in claim 3, wherein said first and second parts include medical syringes which are moved to produce said pressure.
5. A surgical system, comprising:
a source of hydraulic pressure; and a handpiece, connected to said source of hydraulic pressure, said handpiece including a first internal bore, including a device connected to receive said hydraulic pressure, and a second internal bore, substantially parallel to said first internal bore but spaced therefrom, and having a surgical element therein connected to be moved by said device in said first internal bore. | | Claims (French): | | Claims (German): | | Claims (Spanish): | First Claim:
What is claimed:
1. A surgical system comprising:
an interface to a surgical instrument which has a movable part, said interface including a pressure sensitive device that is sensitive to pressure difference and moves based on said pressure differences; and a source of hydraulic pressure, including two separate parts, a first part producing a forward thrust force for said pressure sensitive device, and a second part producing a backward thrust force for said pressure sensitive device. | Independent Claims:
What is claimed:
1. A surgical system comprising:
an interface to a surgical instrument which has a movable part, said interface including a pressure sensitive device that is sensitive to pressure difference and moves based on said pressure differences; and a source of hydraulic pressure, including two separate parts, a first part producing a forward thrust force for said pressure sensitive device, and a second part producing a backward thrust force for said pressure sensitive device.
5. A surgical system, comprising:
a source of hydraulic pressure; and a handpiece, connected to said source of hydraulic pressure, said handpiece including a first internal bore, including a device connected to receive said hydraulic pressure, and a second internal bore, substantially parallel to said first internal bore but spaced therefrom, and having a surgical element therein connected to be moved by said device in said first internal bore. | Description:
HYDRAULIC SURGICAL SYSTEM The present invention describes a hydraulic system for driving a moving surgical device. More specifically, the systern describes a system based on hydraulic pressure to move a driven element of an arthroscopic system.
Background Surgical systems often use a source of power to drive a driven element forward or backward.
The most crude of these devices uses the surgeon's hand to actually move the device. However, this can interfere with the necessary steady hand of the surgeon.
Electronically movable devices are known. However, any part that will be contacting a surgical incision, or inside a human body, requires sterilization.
Therefore, the device must be made in a way that it can be washed, or autoclaved, or else the entire device must be made disposable.
Sterilization can interfere with the operation of some electrical devices.
Disposability can increase the price of the unit per use.
Summary The embodiment as described herein defines providing hydraulic power to move a driven device. Hydraulic power allows number of different advantages. The fluid driving the hydraulics can be sterile saline solution. The systems as described herein are intended to maximize the use of disposable and/or standard off-the-shelf parts where possible.
The system described in the embodiment uses a controller to drive two syringes, each of which produce hydraulic pressure. That hydraulic pressure is used to drive the movement of a special passive handpiece.
Brief Description of the Drawings These and other aspects of the invention will now be described with reference to the attached drawings, in which:
Figure I shows a block diagram of the overall system; Figure 2 shows the bores in the handpiece; Figure 3 shows the fiber holding device that is inserted into the handpiece; Figures 4 and 5 show the movable piston device, with Figure 4 showing that device in its working and pressurized position, and Figure 5 showing the piston device in its stowed and pressure released position; Figure 6A shown an end-on view of the handplece without the movable parts inserted, showing the bores; Figure 6B shows the end on view of the handpiece with the movable parts inserted, showing the tri-port connection for all the fluid conduits; Figure 7 shows an internal part of the piston assembly, showing the fluid communication; Figure 8 shows the connection between the fiber, with its holding device, and the driving piston assembly; Figure 9 shows the special rotatable clip used for the interface; Figure 10 shows the pressure controlling assembly; is Figures I I and 12 show the flowchart of operation of the controller that controls the pressure production.
Descn'12tion of the Preferred Embodiments A block diagram of the overall system is shown in FIG. 1. A surgical handpiece 100 includes a movable element 102 which is moved in and out of the human body. In this preferred embodiment, the device is an arthroscope which drives a movable fiber. More generally, however, the device could drive any movable surgical element.
The force to move the movable element 102 in and out of the human body is provided by hydraulics. Two separate sources of hydraulic pressure are used, a first source of hydraulic pressure 104 which causes the forward movement, and a second source of hydraulic pressure 106 which causes the backwards movement. In the preferred embodiment, as described herein, both the first and second sources are pressurized to positive pressure. Pressure sensor assembly 108 monitors the pressure of the hydraulic lines. That sensed pressure is monitored by microcontroller 118, and used as part of the control routine.
The pressure itself is provided by syringe elements I 10 and 112. These syringe elements are preferably standard, off-the-shelf medical syringes which are driven backwards and forward by drive mechanisms 114 and 116 respectively to either increase the hydraulic pressure or decrease the hydraulic pressure. The syringe elements are preferably filled with sterile saline solution.
The driving elements 114, 116 include stepper motors driving a lead screw.
The operation of the stepper motors is controlled by a microcontroller assembly 118.
A foot switch 120 or other user interface provides the control to command the movement.
In this embodiment, the movable device is an arthroscope with a moving fiber 102. The image from the fiber 102 is processed by video circuit 124 in a conventional way which may include image processing. The final image is displayed on monitor 126.
FIG. 2 shows a more detailed diagram of the handpiece 100 shown in FIG.
is 1. The handpiece is preferably totally passive, meaning that there is no electronics or controls on it at all. The handpiece is totally mechanical. FIG. 2 shows the internal bores within the handpiece, which communicate to carry out certain operations.
A first, moving element containing bore 200 extends in the direction of movement 202 and extends completely from one end of the handpiece to the other, opening at each of the ends. The fiber, along with its holding elements, are within this bore 200.
The second, drive motion holding bore 2 10, also extends in the same general direction as the moving element containing bore 200. The central plane of the second bore is generally parallel and spaced from the central plane of the first bore.
Elements are secured into these bores. The first bore 200 includes internal screw threads 204, allowing securing a first element therein. The second bore 210 includes a "luer lock" thread 214, also allowing that device to be secured therein.
Luer locks are available from, for example, Industrie Borla Spa BOX 336 Via G. Di Vittorio 7 bis-MONCALIERI (Torino)-ITALY.
The two bores are connected at the rear end 212 of the handpiece 100 by an interface bore 215. The interface bore allows room for a device that transmits motion that is produced by the motion generating device in the first bore 2 10 to the moving element containing device in the second bore 200.
A fluid communication bore 230 allows communication of irrigation fluid from the second bore 210 to the first bore 200. This allows all of the fluid sources to be provided to one interface point. Even though the hydraulic fluid used for movement is in a physically different place from where the irrigation is needed, all the fluid conduits (e.g., the flexible tubing) come to the same spot. As will be descn*bed in further detail herein, the first bore 200 contains the fiber holding device, and fiber interface element which is generally shown in FIG.
3. The second bore 210 contains the movable piston device which is generally shown in FIGS. 4 and 5. The interface bore holds the movement translating device shown in Figures 8 and 9. An end-on view of the handpiece, showing the bores 200, is 210, and 215 is shown in FIG. 6A. Figure 6B shows the end on view of the handpiece with the piston and fiber holding device inserted therein, showing the tn'-port connection for all of the fluid conduits.
A detailed view of the fiber interface element 300 is shown FIG. 3. The fiber interface element 300 has a hollow central bore 302 which extends all the way from the first end 304 to the second end 306. That internal bore is preferably slightly larger than the desired fiber, e.g., 20/1000 inch larger than the outer diameter of the fiber to be used. The preferable fiber size is 1. 46mm.
The fiber interface element 300 includes a first diameter section 306 which includes a sealing O-ring 308 which seals to inner diameter of the first bore 200. A matching 0-ning 310 is located on a second expanded diameter portion 314. A reduced meter portion 312 is located between the two expanded diameter portions.
This reduced portion allows forming a sealed cavity 312 at a reduced diameter area between the two O-rings 308/310. The central cavity 312 is in fluid contact with an irrigation source, received through the bore 230, and as discussed herein. Irrigation liquid is received through the holes 314 and irrigates the fiber in the central bore 302 with that irrigation liquid.
The second expanded diameter portion 316 ends in a screw portion 318. The male screw threads 318 screw into mating female screw threads 204, located inside the first main bore 200.
A hollow metal tube 320 extends outward from the fiber interface element.
The fiber extends in and out of the end of metal tube.
The fiber moves back and forth within the internal bore 302 of fiber interface element 300, responsive to motion of the piston assembly 399 that is held within the bore 2 10. The piston has special characteristics. A basic diagram of the piston in its normal operational position is shown in FIG. 4.
Note that the piston has, as is conventional, two different parts: a cylindrical outer housing 400, and a central plunger element 410. The plunger element 410 is formed on a follow cylindrical shaft. The hollow portion of that shaft forms a bore is 412 which allows irrigation fluid to travel through the center of plunger element 410.
The distal end of the plunger 410 ends a luer lock that connects to the corresponding luer lock connection 214 within bore 210, to allow a fluid-tight connection.
This fixes the piston plunger 410 relative to the housing 199. Hence, the plunger portion of the piston remains fixed while the cylindrical outer casing 400 moves under control of the pressure differential that is established. This is opposite of normal operation of a piston assembly where the plunger moves and the housing is fixed.
FIG. 5 shows the piston assembly in its stowed position. The outer housing 400 actually includes dual inner diameter portions, including a first smaller inner diameter portion 500, and a larger, second diameter portion S02. Figure 5 also shows the O-ring seals 504 which seal the plunger assembly 410 relative to the cylindrical housing 400 when the plunger 410 is pressed against the smaller diameter portion 500 of the housing. The outer surface of the wiper portion 420 is formed by this O-ring which is sized to seal against the inner surface of the smaller diameter portion 500 of the housing, to forrn a fluid-tight seal.
However, the larger diameter portion 502 is larger than the outer diameter of this O-ning 422 as is shown most clearly in Figure 5. When the plunger is moved to the position shown in Figure 5, the O-ring 422 is disengaged from the respective inner surfaces, thereby defeating the fluid tight seal when the wiper is in the specified position.
When the plunger is in the position shown in FIG. 4, and is hence pressure-tight, it forms two separate chambers, 430 and 440. These chambers are separately pressurable, and hence the pressure differential between these two chambers controls the movement of the cylinder.
However, when the cylinder is placed into the position shown in FIG. 5, the pressure between the two chambers is equalized. This allows fluid communication between the two chambers for priming the system, for example. In addition, the unit can be shipped in this position to avoid compression of the O-ring and hence increasing the reliability and shelf life of the system.
FIG. 6A also shows a special position tab 610 which mechanically stops the plunger from moving forward beyond a specified amount. Hence, the piston cannot reach its priming position when attached in the handpiece. The priming position be reached only when the piston is out of the handpiece, thereby preventing accidental priming position.
A further detailed drawing of the plunger assembly is found in FIG. 7. The plunger assembly includes a tri-port configuration allowing three different sources of fluid to be introduced to the plunger 410. An end-on view of the tri port configuration is shown in Figure 6B.
The first port 700 opens in a first orifice 702 on the first e of wiper 420. This provides fluid communication to the first chamber 430. A second fluid orifice 710 opens at the second port 712 on the second side of wiper 420 within second chamber 440.
The third fluid orifice 720 extends straight through the cylindrical portion 410, opening at the opposite end 714 which is luer locked to the bore 230. The irrigation fluid then travels through internal bore 230, to irrigate the internal bore 200. The fluid is preferably communicated to the bore 200 at the cavity 313 where the reduced diameter portion 312 of the fiber interface element 300 is located.
FIG. 8 shows the connection between the piston assembly 399 and the fiber 122 which allows movement generated in the plane of piston to be transmitted to the plane of the fiber.
The fiber has a special interface piece 800 attached thereto. That interface piece has a notched portion 802 which connects to a clip 900 shown in ftirther detail in FIG. 9. The first end 902 of the clip is connected into the notched portion 82.
The second end of the clip includes an open portion 904 which connects to a corresponding collar portion 450 in the cylindrical outer housing 400.
Once the portion 902 is attached to the fiber notched portion 802, the clip 900 is still rotatable. Hence the clip can be rotated into position to hold the collar portion 450.
The clip body portion 910 has a specified width that fits within the inner diameter of the bore 215.
Therefore, while not shown in FIG. 6, the second end 902 of clip 900 is located in bore 200. The first end 904 of clip 900 is located in bore 2 10. The central portion 910 of clip 900 is located in the intermediate portion of the interface bore 215. The amount of movement of the fiber is limited by the depth of a interface bore 215, shown as dimension 216 in FIG. 2.
Hence, this system allows the fiber to be moved within the fiber interface element while it is held the fiber holding device.
As explained above, the motion of the system is controlled by hydraulic pressure that is produced from a hydraulic pressure production device. The preferred hydraulic pressure production ice is shown in FIG. 10.
First and second stepper motors 10 10 and 10 12 control the movement that eventually controls the pressure. Stepper motor 10 10 controls pressure on line 1050, while stepper motor 1012 controls pressure on line 1052. Each stepper motor produces a specified amount of motion based on each pulse that is received through the respective input 1008.
The output of stepper motor 1010 rotates an output lead screw 1012 which is connected at its distal end 1014 to a syringe holder element 1020. Syringe holder element includes a spring holding portion including a flat, back portion 1022 and a spring-held front portion 1024, which faces the back portion. The front portion has a spring force that is biased toward the back portion. The rear-most handle of the syringe 1030 is held between the back portion 1022 and the front portion 1024, and the spring holds the handle of the syringe in place. The springs allow the syringe to click into place.
Each pulse to the stepper motor 1008 causes a specified rotation of the lead screw 1012, and hence a specified motion of that distal end 1014. The intermediate portion 1025 of the syringe 1030 and the front pushing surface 1035 of the syringe are also held within the device. Hence, forward motion of the distal portion 1014 presses the syringe's plunger ftirther into its cavity and hence increases the pressure at the output port 1040. The pressure of the syringe is connected to tubing 1042, to a membrane-type pressure sensor 1044, and finally to output port 1050.
The syringes 1030 are industry-standard I Occ syringes which can easily be inserted and removed from their respective slots. Each of the different portions of the syringes-including the back portion, mid portion, and front portion, clips into place to hold it.
A movable clamp portion 1043 is held in place by a spring clamp which allows the device to be rotated and moved up and out of the way. The rotation is carried out along the axis define by element 1045.
Once the clamp 1043 is moved out of the way, the syringes can easily be replaced as desired with new sterile syringes.
The output pressure is coupled to pressure sensor assembly 1044 which includes a flexible membrane portion with a sensor underneath. This kind of pressure sensor is well known in the . art, and is used, for example, in industry standard devices such Mentor's (TM) phaco unit, to sense pressure and fluid lines.
The embodiment described above has described using dual hydraulic pressure producing elements to move the fiber element. However, the same could be done using a single hydraulic element. This use of a single hydraulic element, however, might require a helper spring, or else be limited by atmospheric pressure.
The pressure sensors in 1044 measure the different pressures that exist in the lines. Indications of those pressures are provided to the microcontroller assembly 11 S. Positive pressures are preferably run on both hydraulic lines to pressurize both chambers 430 and 440. This provides better control of the pressure. It also avoids crimping the lines, which could happen if negative pressure was maintained in the lines. The inventors also found that if either or both sides are at ambient pressure, the hydraulic fluid can be de-gassed, resulting in possible air bubbles.
To avoid this possibility, both sides are preferably pre-pressurized to around psi, approximately one atmosphere. This minimizes the possibility of air bubbles in the line, while still allowing an appropriate pressure differential between the two sides. This also facilitates using volumetric measurements to follow the position of operation.
is The movement of the stepper motors, and hence the hydraulic pressure, is controlled by controller 118. Controller assembly 118 preferably includes three separate microcontrollers. A first microcontroller generates a string of pulses for stepper motor No. I and the second microcontroller generates a string of pulses for stepper motor No. 2. The third microcontroller is used for housekeeping control.
A flowchart of the controller operation for moving the steppers is shown in FIG. 11.
During normal operation of moving the arthroscope (step I 100), the two stepper motors operate at the same speed but at opposite polarities as shown in step 1102. Hence, one chamber is more pressurized while the other is less pressurized.
Only during the prepressunization mode (step 1104), both stepper motors are operated at the same speed and polarity to pressurize both lines at 1106 until a pressure of 15 psi is detected at 1108.
The third microcontroller is a logic controller which controls sensors, 10, safety, and motor encoders.
Certain safety features are detected as shown.
A pressure threshold is set. This can avoid bursting the tubing by a blockage.
It also avoids the fast pressure release that will occur when such a blockage is removed.
In order to avoid these problems, the system limits the amount of pressure built up in the line. The pressure is sensed based on inputs from the pressure sensors at I I 10. If the pressure is too high, the stepper pulsing is stopped at 1112.
This also forms an additional safety against driving the device beyond its desired final point. When the piston reaches the end of its stroke, further increases in pressure to the piston will not provide a corresponding further increase in movement. The pressure in the lines will instead increase. Therefore, the pressure sensor can be used as an end detection.
If pulses are sent indicating that the device should move forward and the motor does not move, this also represents an error. This error could be caused by incorrect placement of the syringes. Step 1114 senses whether the motor encoder is physically turning. If not, this causes an error.
Optical limit switch 1061 optically senses the lead screw. That limit switch is monitored at 1116 to make sure that the piston does not overrun the limit switch.
If the limit is overrun, then an error is established.
Step 1102 is itself a complicated process, shown in more detail in Fig. 12.
The input control is via a foot switch. This foot switch can be a rheostat connected to an A and D converted. The stepper motors develop a torque that is based, at least partly on the speed of the motor. However, a specified foot switch position should be accompanied by acceleration to a torque/speed level. The response of the motors, however, is slower than the feedback. Also, the acceleration is a nonlinear curve based not only on the acceleration characteristic of the motor, but also, the tubing type, length and fluid characteristics.
The transfer ftinction between applied control, and actual delivery to the tip can be determined mathematically, but in this case are preferably empirically deten-nined.
The foot pedal is also nonlinear. Fifty percent down on the foot pedal is not necessarily a fifty-percent speed. Therefore, the empirical curve includes a transfer curve for the foot pedal.
A user also cannot be perfectly still on the foot pedal, even when the user does not want additional movement. Hence, the microcontroller also filters the foot pedal position.
These operations are shown in Figure 12.
At step 1200, the foot pedal position is filtered. This uses two different filter operations. A damping frequency roll-off at about 2 hertz prevents minor changes in foot pedal position from having any effect on the output device. A hysteresis mode requires that the amount of movement to be commanded be large--e. g., it prevents slight variation from changing the output position.
The damped voltage is applied to a map of the two transfer functions at step 1202. The voltage from the foot pedal is compensated, as described above, for foot is pedal nonlinearities, and acceleration/tubing nonlinearities. The curve is used to produce pulses for the stepper motors.
Moreover, as discussed above, the handpiece is totally passive, and hence includes no sensor in the handpiece. The position of the fiber can be remotely sensed by sensing the amount of movement. Step 1204 represents counting the stepper pulses and detecting final position. This can be done to within a few thousands of an inch.
Although only a few embodiments have been described in detail above, those having ordinary skill in the art certainly understand that modifications are possible in the preferred embodiment, and that such modifications are intended to be encompassed within the claims. | | Assignee/Applicant: MICRO MEDICAL DEVICES INC.,US | | Assignee/Applicant First: MICRO MEDICAL DEVICES INC.,US | | Assignee - Standardized: MICRO MEDICAL DEVICES INC | | Assignee - Original: MICRO MEDICAL DEVICES INC. | | Assignee - Original w/address: MICRO MEDICAL DEVICES INC.,US | | Assignee Count: 1 | | Inventor: BROWN, Eric, W. | GUST, Gary | CONNAUGHTON, Mark | XIE, Joseph | HUANG, Jay | | Inventor First: BROWN, Eric, W. | | Inventor - Original: BROWN, Eric, W. | GUST, Gary | CONNAUGHTON, Mark | XIE, Joseph | HUANG, Jay | | Inventor - w/address: BROWN Eric W.,US | GUST Gary,US | CONNAUGHTON Mark,US | XIE Joseph,US | HUANG Jay,US | | Inventor Count: 5 | | Attorney/Agent: SCANLON, Stephen, D. | | Attorney/Agent - w/Address: SCANLON Stephen D.|Jones, Day, Reavis & Pogue, North Point, 901 Lakeside Avenue, Cleveland, OH 44114, US | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: WO | | Publication Kind Code: A2 | | Publication Date: 2000-01-20 | | Publication Month: 01 | | Publication Year: 2000 | | Application Number: WO1999US15515A | | Application Country: WO | | Application Date: 1999-07-08 | | Application Month: 07 | | Application Year: 1999 | | Application with US Provisional: WO1999US15515A | 1999-07-08 | | Priority Number: US1998113854A | | Priority Country: US | | Priority Date: 1998-07-10 | | Priority Date - Earliest: 1998-07-10 | | Priority Month: 07 | | Priority Year(s): 1998 | | Earliest Priority Year: 1998 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B001732, A61M002501, A61B0001317, A61B001700, A61B001900 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B001732
| A
| A61
| A61B
| A61B0017
| A61B001732
|
A61M002501
| A
| A61
| A61M
| A61M0025
| A61M002501
|
A61B0001317
| A
| A61
| A61B
| A61B0001
| A61B0001317
|
A61B001700
| A
| A61
| A61B
| A61B0017
| A61B001700
|
A61B001900
| A
| A61
| A61B
| A61B0019
| A61B001900
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 25/0105
A61B 17/320016
| A61B 1/317
A61B 2017/00539
A61B 2017/00977
A61B 2019/308
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B001732E, A61M002501C, K61B0001317, K61B001700N2, K61B001700V2, K61B001930J | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | Cited Refs - Patent Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant | Relevance | Source |
|---|
WO1993002613A1
| 1993-02-18
| PHAN Cu Ngoc
| UNIV CALIFORNIA
| A
| -
|
| Title: ENDOSCOPIC DEVICE ACTUATOR AND METHOD |
| |
US3763864A
| 1973-10-09
| Dremann George H.
| DREMANN G
| Y
| -
|
| Title: POWERED RESECTOSCOPE |
| |
US4708125A
| 1987-11-24
| Miketic Sinisa
| STORZ KARL GMBH & CO
| A
| -
|
| Title: Apparatus for controlling a probe of an endoscopy device |
| |
WO1996026696A1
| 1996-09-06
| GIUNGO John
| PHOTOGENESIS INC
| A
| -
|
| Title: MEDICAL LINEAR ACTUATOR FOR SURGICAL DELIVERY, MANIPULATION, AND EXTRACTION |
| |
WO1995027443A1
| 1995-10-19
| -
| EDELL IRA C
| Y
| -
|
| Title: DEVICE FOR REMOVAL OF INTRALUMINAL OCCLUSIONS |
| |
GB2306111A
| 1997-04-30
| Hart William Barrie
| HART WILLIAM BARRIE
| X
| -
|
| Title: Expandable hydraulic oversleeve for advancing an endoscope into a body cavity |
| |
| | Count of Cited Refs - Patent: 6 | Citing Patents Table: | Publication Number | Publication Date | Assignee/Applicant |
|---|
EP1549200A2
| 2005-07-06
| SIGHTLINE TECHN LTD
|
| | Count of Citing Patents: 1 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2002-01-09
| 122
| -
|
| Description: EP: PCT APP. NOT ENT. EUROP. PHASE |
| |
2001-05-17
| REG
| -
|
| Description: REFERENCE TO NATIONAL CODE DE 8642 IMPACT ABOLISHED FOR DE - I.E. PCT APPL. NOT ENT. GERMAN PHASE |
| |
2000-04-13
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0002478 A3 GH; GM; KE; LS; MW; SD; SL; SZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2000-04-13
| AK
| +
|
| Description: DESIGNATED STATES WO 0002478 A3 AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; CA; CH; CN; CU; CZ; DE; DK; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MD; MG; MK; MN; MW; MX; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; UA; UG; UZ; VN; YU; ZW |
| |
2000-04-06
| DFPE
| -
|
| Description: REQUEST FOR PRELIMINARY EXAMINATION FILED PRIOR TO EXPIRATION OF 19TH MONTH FROM PRIORITY DATE (PCT APPLICATION FILED BEFORE 20040101) |
| |
2000-03-15
| 121
| -
|
| Description: EP: THE EPO HAS BEEN INFORMED BY WIPO THAT EP WAS DESIGNATED IN THIS APPLICATION |
| |
2000-01-20
| AL
| +
|
| Description: DESIGNATED COUNTRIES FOR REGIONAL PATENTS WO 0002478 A2 GH; GM; KE; LS; MW; SD; SL; SZ; UG; ZW; AM; AZ; BY; KG; KZ; MD; RU; TJ; TM; AT; BE; CH; CY; DE; DK; ES; FI; FR; GB; GR; IE; IT; LU; MC; NL; PT; SE; BF; BJ; CF; CG; CI; CM; GA; GN; GW; ML; MR; NE; SN; TD; TG |
| |
2000-01-20
| AK
| +
|
| Description: DESIGNATED STATES WO 0002478 A2 AL; AM; AT; AU; AZ; BA; BB; BG; BR; BY; CA; CH; CN; CU; CZ; DE; DK; EE; ES; FI; GB; GD; GE; GH; GM; HR; HU; ID; IL; IN; IS; JP; KE; KG; KP; KR; KZ; LC; LK; LR; LS; LT; LU; LV; MD; MG; MK; MN; MW; MX; NO; NZ; PL; PT; RO; RU; SD; SE; SG; SI; SK; SL; TJ; TM; TR; TT; UA; UG; UZ; VN; YU; ZW |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: XX N AL;AM;AT;AU;AZ;BA;BB;BG;BR;BY;CA;CH;CN;CU;CZ;DE;DK;EE;ES;FI;GB;GD;GE;GH;GM;HR;HU;ID;IL;IN;IS;JP;KE;KG;KP;KR;KZ;LC;LK;LR;LS;LT;LU;LV;MD;MG;MK;MN;MW;MX;NO;NZ;PL;PT;RO;RU;SD;SE;SG;SI;SK;SL;TJ;TM;TR;TT;UA;UG;UZ;VN;YU;ZW | AP R GH;GM;KE;LS;MW;SD;SL;SZ;UG;ZW | EA R AM;AZ;BY;KG;KZ;MD;RU;TJ;TM | EP R AT;BE;CH;CY;DE;DK;ES;FI;FR;GB;GR;IE;IT;LU;MC;NL;PT;SE | OA R BF;BJ;CF;CG;CI;CM;GA;GN;GW;ML;MR;NE;SN;TD;TG | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
WO2000002478A2
| 20000120
| BROWN Eric W.
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
AU199949792A
| 20000201
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: Hydraulic surgical system |
| |
WO2000002478A3
| 20000413
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2000002478A2&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=WO2000002478A2&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
|
| Record 43/43 | | AU199949792A | Hydraulic surgical system | | Publication Number: AU199949792A | | Title: Hydraulic surgical system | | Title (Original): | | Title (English): Hydraulic surgical system | | Title (French): | | Title (German): | | Title (Spanish): | | Title - DWPI: Hydraulic unit for driving surgical device uses pair of stepper motor driven syringes to produce forward and backward pressure sources | Abstract:
| | Abstract (English): | | Abstract (French): | | Abstract (German): | | Abstract (Original): | | Abstract (Spanish): | | Claims: | | Claims Count: | | Claims (English): | | Claims (French): | | Claims (German): | | Claims (Spanish): | | First Claim: | | Independent Claims: | | Description: | | Assignee/Applicant: MICRO MEDICAL DEVICES INC | | Assignee/Applicant First: MICRO MEDICAL DEVICES INC | | Assignee - Standardized: MICRO MEDICAL DEVICES INC | | Assignee - Original: | | Assignee - Original w/address: | | Assignee Count: 1 | | Inventor: BROWN ERIC W | GUST GARY | CONNAUGHTON MARK | XIE JOSEPH | HUANG JAY | | Inventor First: BROWN ERIC W | | Inventor - Original: | | Inventor - w/address: BROWN ERIC W | GUST GARY | CONNAUGHTON MARK | XIE JOSEPH | HUANG JAY | | Inventor Count: 5 | | Attorney/Agent: | | Attorney/Agent - w/Address: | | Correspondent: | | Correspondent - w/Address: | | Examiner: | | Publication Country Code: AU | | Publication Kind Code: A | | Publication Date: 2000-02-01 | | Publication Month: 02 | | Publication Year: 2000 | | Application Number: AU199949792D | | Application Country: AU | | Application Date: 1999-07-08 | | Application Month: 07 | | Application Year: 1999 | | Application with US Provisional: AU199949792D | 1999-07-08 | | Priority Number: US1998113854A | WO1999US15515A | | Priority Country: US | WO | | Priority Date: 1998-07-10 | 1999-07-08 | | Priority Date - Earliest: 1998-07-10 | | Priority Month: 07 | 07 | | Priority Year(s): 1998 | 1999 | | Earliest Priority Year: 1998 | | Related Application Table: | | PCT App Number: | | PCT App Date: | | PCT Pub Number: | | PCT Pub Date: | | IPC - Current: A61B001732, A61M002501, A61B0001317, A61B001700, A61B001900 | IPC Class Table: | IPC | Section | Class | Subclass | Class Group | Subgroup |
|---|
A61B001732
| A
| A61
| A61B
| A61B0017
| A61B001732
|
A61M002501
| A
| A61
| A61M
| A61M0025
| A61M002501
|
A61B0001317
| A
| A61
| A61B
| A61B0001
| A61B0001317
|
A61B001700
| A
| A61
| A61B
| A61B0017
| A61B001700
|
A61B001900
| A
| A61
| A61B
| A61B0019
| A61B001900
|
| Any CPC Table: | Type | Invention | Additional | Version | Office |
|---|
Current
Current
Current
Current
| A61M 25/0105
A61B 17/320016
| A61B 1/317
A61B 2017/00539
A61B 2017/00977
A61B 2019/308
| 20130101
20130101
20130101
20130101
| EP
EP
EP
EP
|
| | Current Combination Codes CPC Table: | | Any Combination Codes CPC Table: | | US Class: | | US Class (divided): | | US Class - Main: | | US Class - Original: | | ECLA: A61B001732E, A61M002501C, K61B0001317, K61B001700N2, K61B001700V2, K61B001930J | | Locarno Class: | | JP F Terms: | | JP FI Codes: | | Cited Refs - Non-patent: | | Count of Cited Refs - Non-patent: 0 | | Cited Refs - Patent Table: | | Count of Cited Refs - Patent: 0 | | Citing Patents Table: | | Count of Citing Patents: 0 | INPADOC Legal Status Table: | Gazette Date | Code | INPADOC Legal Status Impact |
|---|
2001-04-05
| MK6
| -
|
| Description: APPLICATION LAPSED SECTION 142(2)(F)/REG. 8.3(3) - PCT APPLIC. NOT ENTERING NATIONAL PHASE |
| |
| | Post-Issuance (US): | | Maintenance Status (US): | | Reassignment (US) Table: | | Reassignment (US) Table - Latest: | | Designated States: | | Litigation (US): | | Opposition (EP): | | Opposition (EP) - Opponent: | | Opposition (EP) - Date Filed: | | Opposition (EP) - Attorney: | | License (EP): | | License (EP) - Licensee name: | | License (EP) - License date: | | EPO Procedural Status: | | Gov't Interest (US): | | Language of Publication: EN | INPADOC Family Table: | Publication Number | Publication Date | Inventor | Assignee/Applicant |
|---|
AU199949792A
| 20000201
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: Hydraulic surgical system |
| |
WO2000002478A2
| 20000120
| BROWN Eric W.
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
WO2000002478A3
| 20000413
| BROWN ERIC W
| MICRO MEDICAL DEVICES INC
|
| Title: HYDRAULIC SURGICAL SYSTEM |
| |
| | Front Page Drawing: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU199949792A_&format=gif&fponly=0 | | Front Page Image: http://clips.thomsoninnovation.com/perl/clips/getclip.pl?size=360&patent=AU199949792A_&format=gif&fponly=1 | | Record Source: Result Set | | Top |
|
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