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Method and apparatus for determination of end-of-service for implantable devices

  • US 5,344,431 A
  • Filed: 09/14/1992
  • Issued: 09/06/1994
  • Est. Priority Date: 01/22/1990
  • Status: Expired due to Term
First Claim
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1. A medical device having battery end-of-service indication comprising:

  • (a) an implantable housing;

    (b) a medical device within said implantable housing,(c) a cathode-limited electrochemical cell having an active metal anode and a manganese dioxide cathode within the housing;

    (d) analog voltage measurement means within the housing for measuring a voltage of the electrochemical cell;

    (e) analog-to-digital conversion means within the housing for converting the measured analog voltage into a digital signal; and

    (f) telemetry means within the housing for telemetry of the digital signal.

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