초록 ▼

An implantable infusion pump possesses operational functionality that is, at least in part, controlled by software operating in two processor ICs which are configured to perform some different and some duplicate functions. The pump exchanges messages with an external device via telemetry. Each proce

An implantable infusion pump possesses operational functionality that is, at least in part, controlled by software operating in two processor ICs which are configured to perform some different and some duplicate functions. The pump exchanges messages with an external device via telemetry. Each processor controls a different part of the drug infusion mechanism such that both processors must agree on the appropriateness of drug delivery for infusion to occur. Delivery accumulators are incremented and decremented with delivery requests and with deliveries made. When accumulated amounts reach or exceed, quantized deliverable amounts, infusion is made to occur. The accumulators are capable of being incremented by two or more independent types of delivery requests. Operational modes of the infusion device are changed automatically in view of various system errors that are trapped, various system alarm conditions that are detected, and when excess periods of time lapse between pump and external device interactions.

대표청구항 ▼

1. A medical system, comprising:a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical dev

1. A medical system, comprising:a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body; and b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device, wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system, wherein the medical device comprises a reservoir capable of containing an infusion media and a pumping mechanism for transferring the infusion media from the reservoir to the body of the patient, wherein the communication device is programmed with at least two quantities relating to at least two amounts of infusion media delivery, wherein the medical device is configured to deliver the infusion media by generating a number of pump strokes of the pumping mechanism to transfer a volume of infusion media that corresponds to the simultaneous delivery of the at least two amounts; wherein the at least two quantities represent volumes of the infusion media to be delivered; and wherein the medical device generates a number of pump strokes to cause a net volume of infusion media to be delivered that is equal to the sum of the at least two quantities. 2. The system of claim 1 wherein a first portion of the MD telemetry system is incorporated into the MD processor and a second portion of the MD telemetry system is external to the MD processor, or wherein a first portion of the CD telemetry system is incorporated into the CD processor and a second portion of the CD telemetry system is external to the CD processor.3. The system of claim 2 wherein (1) the MD electronic control circuitry comprises at least one external MD functional module, other than the second portion of the MD telemetry system, that is external to the MD processor, (2) the CD electronic control circuitry comprises at least one external CD functional module, other than the second portion of the CD telemetry system, that is external to the CD processor, (3) the MD processor comprises an internal MD CPU and at least one other internal MD functional module, or (4) the CD processor comprises an internal CD CPU and at least one other internal CD functional module.4. The system of claim 1 wherein a first portion of the MD telemetry system is incorporated into the MD processor and a second portion of the MD telemetry system is external to the MD processor, or wherein a first portion of the CD telemetry system is incorporated into the CD processor and a second portion of the CD telemetry system is external to the CD processor.5. The system of claim 4 wherein the MD electronic control circuitry comprises at least one external MD functional module, other than the second portion of the MD telemetry system, that is external to the MD processor, and wherein the CD electronic control circuitry comprises at least one external CD functional module, other than the second portion of the MD telemetry system, that is external to the CD processor.6. The system of claim 5 wherein the MD processor comprises an MD central processing unit and at least one other MD functional module, and wherein the CD processor comprises a CD central processing unit and at least one other CD functional module.7. The system of claim 1 wherein the medical device comprises at least one of (1) an implantable infusion pump for selectively dispensing a selected drug, (2) an implantable infusion pump for selectively dispensing insulin, (3) an implantable sensor for sensing a selected state of the body, (4) an implantable sensor for sensing glucose level, or (5) an implantable electrode for selectively stimulating a portion of the body of the patient.8. The system of claim 1 wherein the at least two quantities comprise a bolus and a basal quantity.9. The system of claim 1 wherein at least one of the at least two quantities is programmed as a delivery rate.10. The system of claim 1 wherein at least one of the at least two amounts of infusion media delivery is a volume of infusion media to be delivered.11. The system of claim 1 wherein at least one of the at least two amounts of infusion media delivery is a rate at which infusion media is to be delivered.12. The system of claim 1,wherein the communication device calculates, from the at least two quantities, the number of pump strokes to be generated in a specified time interval by the medical device, and wherein the communication device sends a message containing the number of pump strokes to the medical device. 13. The system of claim 1,wherein the communication device calculates, from the at least two quantities, the number of pump strokes to be generated in a specified time interval by the medical device, and wherein the number of pump strokes consists of an integer number of pump strokes and a fractional number of pump strokes. 14. The system of claim 1,wherein the medical device determines, from the at least two quantities, the number of pump strokes to be generated in a specified time interval. 15. A medical system, comprising:a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body; and b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device, wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system, wherein the medical device is configured to provide quantized amounts of treatment to or monitoring of the body of the patient, wherein the medical device is configured with at least one treatment amount accumulator or monitoring amount accumulator that allows fractional portions of the quantized amounts to be periodically added into the accumulator, wherein the accumulator is comprised of a memory device for holding a first value and a second value, wherein the first value represents whole portions of the quantized amounts of treatment to or monitoring of the body of the patient, and wherein the second value represents fractional portions of the quantized amounts of treatment to or monitoring of the body of the patient. 16. The system of claim 15 wherein a first portion of the MD telemetry system is incorporated into the MD processor and a second portion of the MD telemetry system is external to the MD processor, or wherein a first portion of the CD telemetry system is incorporated into the CD processor and a second portion of the CD telemetry system is external to the CD processor.17. The system of claim 16 wherein (1) the MD electronic control circuitry comprises at least one external MD functional module, other than the second portion of the MD telemetry system, that is external to the MD processor, (2) the CD electronic control circuitry comprises at least one external CD functional module, other than the second portion of the CD telemetry system, that is external to the CD processor, (3) the MD processor comprises an internal MD CPU and at least one other internal MD functional module, or (4) the CD processor comprises an internal CD CPU and at least one other internal CD functional module.18. The system of claim 15 wherein a first portion of the MD telemetry system is incorporated into the MD processor and a second portion of the MD telemetry system is external to the MD processor, or wherein a first portion of the CD telemetry system is incorporated into the CD processor and a second portion of the CD telemetry system is external to the CD processor.19. The system of claim 18 wherein the MD electronic control circuitry comprises at least one external MD functional module, other than the second portion of the MD telemetry system, that is external to the MD processor, and wherein the CD electronic control circuitry comprises at least one external CD functional module, other than the second portion of the MD telemetry system, that is external to the CD processor.20. The system of claim 19 wherein the MD processor comprises an MD central processing unit and at least one other MD functional module, and wherein the CD processor comprises a CD central processing unit and at least one other CD functional module.21. The system of claim 15 wherein the accumulator comprises a treatment amount accumulator.22. The system of claim 21 wherein the medical device comprises an infusion mechanism controlled by the MD processor, wherein the medical device is configured to provide a quantized amount of an infusion media to the body of the patient, and wherein the treatment amount accumulator is a dispensing amount accumulator.23. The system of claim 22 wherein the system is programmed to allow the quantitized amount of the infusion media to be infused when an amount in the accumulator is equal to or exceeds the quantized amount and wherein the amount in the accumulator is decremented by the quantized amount based on each quantized amount infused.24. The system of claim 23 wherein the infusion mechanism is a pulsatile pumping device.25. The system of claim 24 wherein the infusion mechanism is a electromagnetically activiated piston pump.26. The system of claim 15 wherein the medical device comprises at least one of (1) an implantable infusion pump for selectively dispensing a selected drug, (2) an implantable infusion pump for selectively dispensing insulin, (3) an implantable sensor for sensing a selected state of the body, (4) an implantable sensor for sensing glucose level, or (5) an implantable electrode for selectively stimulating a portion of the body of the patient.27. A medical system, comprising:a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body; and b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device, wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system, wherein the medical device comprises a reservoir capable of containing an infusion media and a pumping mechanism for transferring the infusion media from the reservoir to the body of the patient, wherein the communication device is programmed with at least two quantities relating to at least two amounts of infusion media delivery, wherein the medical device is configured to deliver the infusion media by generating a number of pump strokes of the Pumping mechanism to transfer a volume of infusion media that corresponds to the simultaneous delivery of the at least two amounts; wherein a first quantity of the at least two quantities comprises a basal rate at which the infusion media is continuously delivered; wherein a second quantity of the at least two quantities comprises a bolus dose volume of the infusion media; wherein a third quantity of the at least two quantities comprises a bolus dose time duration during which the bolus dose volume of the infusion media is administered; wherein a bolus rate is set as the bolus dose volume divided by the bolus dose time duration; and wherein the medical device generates pump strokes to transfer the infusion media at a rate that corresponds to the sum of the basal rate and the bolus rate for a time equal to the bolus duration so as to cause a temporary increase in the rate at which the infusion media is delivered. 28. A medical system, comprising:a) an ambulatory medical device (MD) comprising MD electronic control circuitry that further comprises at least one MD telemetry system and at least one MD processor that controls, at least in part, operation of the MD telemetry system and operation of the medical device, wherein the medical device is configured to provide a treatment to a body of a patient or to monitor a selected state of the body; and b) a communication device (CD) comprising CD electronic control circuitry that further comprises at least one CD telemetry system and at least one CD processor that controls, at least in part, operation of the CD telemetry system and operation of the communication device, wherein the CD telemetry system sends messages to or receives messages from the MD telemetry system, wherein the medical device comprises a reservoir capable of containing an infusion media and a pumping mechanism for transferring the infusion media from the reservoir to the body of the patient, wherein the communication device is programmed with at least two quantities relating to at least two amounts of infusion media delivery, wherein the medical device is configured to deliver the infusion media by generating a number of pump strokes of the pumping mechanism to transfer a volume of infusion media that corresponds to the simultaneous delivery of the at least two amounts; wherein a first quantity of the at least two quantities comprises a basal rate at which the infusion media is continuously delivered; wherein a second quantity of the at least two quantities comprises a bolus dose volume of the drug; wherein the medical device generates pump strokes as quickly as possible to transfer the bolus dose volume in addition to the volume of infusion media transferred at the basal rate, so that the net amount of the infusion media delivered corresponds to the sum of the bolus dose volume and the volume of the infusion media delivered at the basal rate. 29. The system of claim 15:wherein the medical device comprises a reservoir capable of containing an infusion media and a pumping mechanism for transferring the infusion media from the reservoir to the body of the patient; wherein a quantized amount of the infusion media is delivered to the body of the patient for each pump stroke of the pumping mechanism; wherein the medical device provides the infusion media to the body of the patient in a series of discrete time intervals; wherein the amount of the infusion media to be delivered in each time interval is represented as a number of whole pump strokes and a number of fractional pump strokes; wherein during each time interval, the amount of the infusion media to be delivered in the time interval is added to the accumulator; wherein any whole number of pump strokes indicated by the accumulator are delivered in the time interval; and wherein the accumulator is decremented by one for each pump stroke that is delivered.