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Battery monitoring means for an implantable living tissue stimulator

  • US 4,231,027 A
  • Filed: 02/28/1979
  • Issued: 10/28/1980
  • Est. Priority Date: 02/28/1979
  • Status: Expired due to Term
First Claim
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1. In an implantable living tissue stimulator powered by a battery and having a telemetry means for transmitting and receiving signals related to the operation of said tissue stimulator, a battery monitoring means comprising:

  • means for providing said battery output voltage to said telemetry means;

    load means for altering current through said battery; and

    means for connecting said load means to said battery thereby altering said battery output voltage by an amount related to the internal impedance of said battery.

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