Heartbeat rate monitor

Details Heartbeat rate monitor Heartbeat rate monitor

1978-01-31

1979-08-07

Kamm, William E.

Surgery

Truss

Pad

128690, A61B 502

Patent

active

041634470

ABSTRACT:
A heartbeat rate monitor has a light source, powered by a rechargeable battery, for transilluminating skin tissue. A semiconductor detector which produces an output signal in dependence on light originating from the light source and reflected from the skin tissue, and hence on changes in arterial blood flow, is additionally used, on exposure to ambient light, to produce a current for recharging the battery.

REFERENCES:
patent: 3769974 (1973-11-01), Smart et al.
patent: 3807388 (1974-04-01), Orr et al.
patent: 3835837 (1974-09-01), Peek
patent: 3937004 (1976-02-01), Natori
patent: 3993047 (1976-11-01), Peek
patent: 4063551 (1977-12-01), Sweeney

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