Hybrid battery for implantable pulse generator
First Claim
1. A cardioverter, comprising:
- a battery;
a high voltage output circuit including a high voltage energy storage device, said output circuit being responsive to a triggering signal to apply voltage stored on said energy storage device to an output terminal of said cardioverter;
a charging circuit means, coupled to said high voltage output circuit and to said battery, responsive to a charging signal, for charging said high voltage energy storage device;
a control circuit, coupled to said charging circuit and to said output circuit, said control circuit comprising means for issuing said triggering signal and said charging signal;
a high energy density capacitor operatively coupled to deliver voltage stored thereon to power said control circuit and having a sufficient capacitance to allow continued operation of said control circuit for at least one second while said charging circuit means charges said energy storage device;
switch means for selectively coupling and uncoupling said high energy density capacitor and said control circuitry coupled thereto from said battery; and
means responsive to operation of said charging circuit for causing said switch means to uncouple said high energy density capacitor and said control circuit from said battery.
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Accused Products
Abstract
A power supply arrangement for a battery-powered device includes a high energy density capacitor which is selectively coupled to the device'"'"'s battery. In one embodiment, the device includes a first circuit which requires a continuous operational power supply voltage to be applied to its power supply input, and further includes a second circuit periodically operates in a peak phase in which it places a high demand upon the device'"'"'s battery. During normal operation of the device, the first circuit'"'"'s power supply input and the high energy density capacitor are coupled to the battery so that operational power for the first circuit is provided directly from the battery, and the high energy density capacitor is charged by said battery. During the peak operational phases of the second circuit, the first circuit and high energy density capacitor are decoupled from the battery, such that operational power for the first circuit is provided from the capacitor, while operational power for the second circuit is provided from the battery. During the peak phases, the output voltage of the high-energy density capacitor is monitored, and if it falls below predetermined minimum threshold level, the first circuit'"'"'s power supply input terminal and the capacitor are temporarily re-coupled to the battery, so that sufficient operational power to the first circuit is ensured.
101 Citations
12 Claims
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1. A cardioverter, comprising:
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a battery; a high voltage output circuit including a high voltage energy storage device, said output circuit being responsive to a triggering signal to apply voltage stored on said energy storage device to an output terminal of said cardioverter; a charging circuit means, coupled to said high voltage output circuit and to said battery, responsive to a charging signal, for charging said high voltage energy storage device; a control circuit, coupled to said charging circuit and to said output circuit, said control circuit comprising means for issuing said triggering signal and said charging signal; a high energy density capacitor operatively coupled to deliver voltage stored thereon to power said control circuit and having a sufficient capacitance to allow continued operation of said control circuit for at least one second while said charging circuit means charges said energy storage device; switch means for selectively coupling and uncoupling said high energy density capacitor and said control circuitry coupled thereto from said battery; and means responsive to operation of said charging circuit for causing said switch means to uncouple said high energy density capacitor and said control circuit from said battery. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable medical device, comprising:
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a hermetic enclosure; a battery and circuitry means for performing a medically beneficial operation, both located in said enclosure, said circuitry means in turn comprising; a first, control circuit, requiring a first level of electrical power when in operation; a second, operational circuit, powered by said battery and requiring a second, higher level of electrical power when in operation; a high energy density capacitor operatively coupled to deliver voltage stored thereon to power said first, control circuit and having a sufficient capacitance to provide power for continued operation of said first, control circuit for at least one second while said second, operational circuit is active; switch means for selectively coupling and uncoupling said high energy density capacitor and said first, control circuit coupled thereto from said battery; and means responsive to operation of said second, operational circuit for causing said switch means to uncouple said high energy density capacitor and said control circuit from said battery. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification