Apparatus for generating heart stimulation pulses upon demand

Details Apparatus for generating heart stimulation pulses upon demand Apparatus for generating heart stimulation pulses upon demand

1975-10-20

1976-10-05

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

039838803

ABSTRACT:
Apparatus for generating electrical stimulation pulses in the absence of naturally occurring "R" heart waves includes a free running multivibrator for generating pulses at the desired heart stimulation rate and an output amplifier and voltage multiplier for amplifying the generated pulses for application to the heart. A plural stage filter-amplifier amplifies any naturally occurring "R" waves to trigger a normally nonconducting multivibrator to activate disabling transistors, in turn, which discharge the timing capacitors of the free running multivibrator.
The apparatus can be used with either a chemical or nuclear battery or other load dependent low voltage source.

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patent: 3431912 (1969-03-01), Keller, Jr.
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patent: 3693626 (1972-09-01), Cole
patent: 3726285 (1973-04-01), Bowers et al.
patent: 3759266 (1973-09-01), Lee
patent: 3898994 (1975-08-01), Kolenik et al.

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