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Implantable medical device with dual cell power source

  • US 6,650,942 B2
  • Filed: 05/30/2001
  • Issued: 11/18/2003
  • Est. Priority Date: 05/30/2001
  • Status: Expired due to Term
First Claim
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1. An implantable medical device comprising:

  • a hermetic enclosure;

    a low-power control circuit located in the enclosure;

    a high-power output circuit located in the enclosure for delivering an electrical pulse therapy; and

    a power source and circuitry located in the enclosure for powering the low-power control circuit and the high-power output circuit, the power source and circuitry comprising;

    a first, high-rate cell, a second, lower-rate cell having a rate capability less than a rate capability of the first, high-rate cell, wherein the first cell and second cell are electrically connected in parallel to the low-power control circuit and the high-power output circuit, a switching circuit electrically connected between the first, high-rate cell and the low-power control circuit for selectively uncoupling the first, high-rate cell from the low-power control circuit upon activation of the high-power output circuit.

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