04096866 is referenced by 97 patents and cites 8 patents.

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.

Title
Rechargeable body tissue stimulator with back-up battery and pulse generator
Application Number
682505
Publication Number
4096866
Application Date
July 29, 1977
Publication Date
June 27, 1978
Inventor
Robert E Fischell
Silver Spring
MD, US
Agent
Robert E Archibald
Assignee
The Johns Hopkins University
MD, US
IPC
A61N 1/36
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