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Implantable therapeutic substance infusion device with active longevity projection

  • US 7,001,359 B2
  • Filed: 03/16/2001
  • Issued: 02/21/2006
  • Est. Priority Date: 03/16/2001
  • Status: Expired due to Term
First Claim
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1. An implantable therapeutic substance infusion device with active longevity projection, comprising:

  • a housing;

    a power source carried in the housing;

    a therapeutic substance reservoir carried in the housing, the therapeutic substance reservoir configured for containing a therapeutic substance and being refilled with the therapeutic substance while implanted;

    a therapeutic substance pump carried in the housing, the therapeutic substance pump fluidly coupled to the therapeutic substance reservoir, and electrically coupled to the power source;

    electronics carried in the housing, the electronics coupled to the therapeutic substance pump and the power source, the electronics including,a processor,a memory coupled to the processor,an infusion program residing in the memory, the infusion program capable of being modified once the therapeutic substance infusion device is implanted;

    transceiver circuitry coupled to the processor for externally receiving and transmitting therapeutic substance infusion device information;

    at least one preset longevity parameter residing in the memory indicative of longevity of the implantable therapeutic substance infusion device;

    a monitor for sensing at least one sensed longevity parameter accessible by the processor and indicative of longevity of the implantable therapeutic substance infusion device wherein the sensed longevity parameter comprises therapeutic substance pump cycles,a longevity prediction program contained in the memory, the longevity prediction program correlating the preset parameter to the sensed parameter and calculating an elective replacement period for the implantable therapeutic substance infusion device; and

    a longevity extension program contained in the memory, the longevity extension program selectively implementing predetermined functional limitations to the implantable therapeutic substance infusion device based on the correlation of the sensed longevity parameter to the preset longevity parameter, to extend critical functionality of the implantable therapeutic substance infusion device beyond a calculated end-of-life period for the implantable therapeutic substance infusion device, wherein the predetermined functional limitations are selected from the group consisting of limit pump flow rate, and limit pump bolus rate.

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