Battery failure compensation for a power supply used in an impla

Details Battery failure compensation for a power supply used in an impla Battery failure compensation for a power supply used in an impla

1979-07-02

1982-04-06

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

043230750

ABSTRACT:
A fully implantable power supply for use with or in a fully implantable defibrillator, which has a fibrillation detector in circuit with the power supply and a power inverter switchably in circuit with the power supply. The power supply comprises an energy source which includes a plurality of batteries arranged in series, each of the batteries having a pair of output terminals, each of the batteries producing a multilevel voltage across its pair of output terminals, the voltage being at a first level when the battery is fully charged and dropping to a second level at some point during the discharge of the battery. Circuitry in the form of a plurality of unidirectional conducting devices is provided for creating a first conductive path between the serially-connected batteries and the fibrillation detector, and a second conductive path between the inverter and the batteries that are producing the first level of voltage.

REFERENCES:
patent: 3614954 (1971-10-01), Mirowski et al.
patent: 3783877 (1974-01-01), Bowers
patent: 3857398 (1974-12-01), Rubin
patent: 3952750 (1976-04-01), Mirowski et al.

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