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System for infusion of medicine into the body of a patient

  • US 5,558,640 A
  • Filed: 03/08/1995
  • Issued: 09/24/1996
  • Est. Priority Date: 03/17/1994
  • Status: Expired due to Fees
First Claim
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1. In a system for infusing medication into the body of a patient having an implantable infusion apparatus containing a dosing unit with a reservoir for medication and a pump for pumping doses of said medication from said reservoir into the patient, a sensor for sensing a physiological parameter of the patient for use in controlling the dosing of medication, dependent on said sensed parameter, and an external programmer/controller, the improvement comprising:

  • said sensor and said dosing unit having no galvanic connection therebetween;

    first telemetry means implanted with and connected to said sensor, for bi-directional telemetry communication with said programmer/controller for transmitting data, at least comprising said sensed parameter, to, and for receiving data and instructions from, said programmer/controller;

    second telemetry means implanted with and connected to said dosing unit, for bi-directional telemetry communication with said programmer/controller for transmitting data to, and receiving data and instructions from, said programmer/controller;

    third telemetry means, disposed in said programmer/controller, for bi-directional telemetry communication with each of said first and second telemetry means, and means for selectively establishing said bi-directional communication with said first and second telemetry means individually or simultaneously; and

    said first, second and third telemetry means comprising, in combination, means for closed-loop telemetric control of the delivery of medication to said patient by communication between said sensor and said dosing unit via said programmer controller.

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