Patent ID: 7209784
Filing Date: 2007-04-24
Classification: A61N,H01M,Y02P

Abstract:
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, said power source and circuitry further comprising: a first high-rate cell having a resistance R; a second high-rate cell having a resistance R; wherein the first high-rate cell and second high-rate cell are electrically connected in parallel to the low-power control circuit and the high-power output circuit; and at least one resistive load having a resistance at least 10 times greater than the resistance R electrically connected between the first high-rate cell and the second high-rate cell, the at least one resistive load having a resistive value to limit, in the event the first high-rate cell being internally shorted, the rate at which such internally shorted first high-rate cell drains the second high-rate cell.