Rechargeable body tissue stimulator with back-up battery and pul

Details Rechargeable body tissue stimulator with back-up battery and pul Rechargeable body tissue stimulator with back-up battery and pul

1977-07-29

1978-06-27

Kamm, William E.

Surgery

Truss

Pad

128419PS, A61N 136

Patent

active

040968669

ABSTRACT:
An implanted tissue stimulator apparatus includes circuitry, powered by an implanted rechargeable battery, to produce electrical stimulation and apply it to selected body tissue. The condition of the rechargeable battery is monitored continuously and if the cell fails or its voltage drops below a preselected level, the stimulator reverts to a stand-by power source provided by a battery having an extremely long shelf-life. A back-up pulse generator is also provided and the control logic circuitry within the implanted stimulator monitors the operation of the pulse generator, in addition to the condition of the rechargeable battery, and if faulty operation of the pulse generator is detected the logic circuitry automatically switches to the back-up pulse generator in order to maintain adequate tissue stimulation.

REFERENCES:
patent: 3454012 (1969-07-01), Raddi
patent: 3518997 (1970-07-01), Sessions
patent: 3523539 (1970-08-01), Lavezzo et al.
patent: 3822707 (1974-07-01), Adducci et al.
patent: 3866614 (1975-02-01), Svensson
patent: 3881493 (1975-05-01), Cannon

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