Programmably variable voltage multiplier for implanted stimulato

Details Programmably variable voltage multiplier for implanted stimulato Programmably variable voltage multiplier for implanted stimulato

1978-06-19

1980-05-20

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

042034485

ABSTRACT:
A free running oscillator clocks a counter, which produces stimulation control signals at a predetermined counter. An output stage includes transistors, energized by the counter, to issue stimulating pulses having a voltage equal to that across a capacitor in parallel with the output stage. The output capacitor is charged, between output pulses, by successive charge sharing cycles with at least one other capacitor, which is enabled by a stored program word, at a rate determined by the oscillator output cycles.

REFERENCES:
patent: 3431912 (1969-03-01), Keller, Jr.
patent: 3707974 (1973-01-01), Raddi
patent: 3726285 (1973-04-01), Bowers et al.
patent: 3757795 (1973-09-01), Anderson
patent: 3867949 (1975-02-01), Schwalm et al.
patent: 3926197 (1975-12-01), Alley
patent: 3983880 (1976-10-01), Kolenik
patent: 4023121 (1977-05-01), Alley
patent: 4041953 (1977-08-01), Anderson et al.
patent: 4050004 (1977-09-01), Greatbatch

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