Closed Loop Medicament Pump
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Accused Products
Abstract
A device to determine the level of a substance of interest in a patient'"'"'s body and provide a therapeutic amount of medicament is disclosed. The level of a substance of interest in the patient'"'"'s body is determined by iontopheretically sampling the patient'"'"'s blood and then analyzing the resulting sample to determine the level of the substance of interest. The information about the level of a substance of interest is transmitted to an implanted drug pump in the patient'"'"'s body. In the preferred embodiment, the substance of interest sensor is an external sensor applied to the user'"'"'s skin. In an alternate embodiment, the sensor may be implanted. The preferred method of transmitting information about the level of a substance of interest determined by the sensor is transmitted to an implanted drug pump in the patient'"'"'s body is via a so called “body bus”. The “body bus” is a telemetry system where the patient'"'"'s own body provides the interconnection between the iontopheretic device and the implanted drug pump.
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Citations
44 Claims
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1. -13. (canceled)
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14. A closed loop medicament pump for a patient for sampling and determining the concentration of a substance of interest and for determining and delivering a responsive dose of an appropriate medicament to the patient, wherein the substance of interest includes glucose and the medicament includes insulin, comprising:
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a sensor for sampling and determining the concentration of a substance of interest including glucose in the patient; a control system for determining an appropriate response to the determined concentration of the substance of interest; an implantable drug pump for dispensing an appropriate amount of a medicament including insulin to the patient; a first communications system capable of communicating information, regarding the sensed concentration of a substance of interest in the patient, from the sensor to the control system; and a second communications system capable of communicating information, regarding the determined response to the determined concentration of the substance of interest, from the control system to the implantable drug pump. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A closed loop medicament pump for a patient for sampling and determining the concentration of a substance of interest and for determining and delivering a responsive dose of an appropriate medicament to the patient, wherein the substance of interest includes glucose and the medicament includes insulin, comprising:
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an external, disposable, reusable sensor for sampling and determining the concentration of a substance of interest including glucose in the patient; a control system including a microprocessor for determining an appropriate response to the determined concentration of the substance of interest, wherein the microprocessor operates a program including the steps of receiving information related to the concentration of the substance of interest, comparing the information related to the concentration to information related to a predetermined limit, and then, if the comparing step indicates the concentration exceeds the predetermined limit, determining the appropriate response to the determined concentration, and generating information to cause a drug pump to deliver the responsive dose of the appropriate medicament, and if the comparing step indicates the concentration does not exceed the predetermined limit, waiting for a period of time to expire before again operating the program steps of receiving information related to the concentration of the substance of interest and comparing the information related to the concentration to information related to the predetermined limit, in which the periodicity of the operation of the program, including the period of time for waiting, may be present in the program or programmed, and in which the operation of the program steps of receiving information related to the concentration of the substance of interest and comparing the information related to the concentration to information related to the predetermined limit may be accomplished on command, in which the microprocessor further includes one of either a memory with a look-up table or a formula for the responsive dose of the appropriate medicament or a memory, and the step of determining the responsive dose includes one of retrieving a value from the look-up table or determining the dose according to the formula; the implantable drug pump for dispensing an appropriate amount of a medicament including insulin to the patient, in which the drug pump includes memory, and the information communicated to the pump to cause the drug pump to deliver the responsive dose of the appropriate medicament is stored in the memory with related time of the delivery of the responsive dose, and the memory keeps the information and time available for later uplink telemetry; uplink telemetry equipment including an operatively connected antenna which receives downlinked telemetry programming data transmitted by an external programmer; a first communications system capable of communicating information, regarding the sensed concentration of a substance of interest in the patient, from the sensor to the control system; a second communications system capable of communicating information, regarding the determined response to the determined concentration of the substance of interest, from the control system to the implantable drug pump; and an operatively connected battery. - View Dependent Claims (43, 44)
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Specification