Cardiac monitor

Details Cardiac monitor Cardiac monitor

1977-02-17

1979-09-04

Truluck, Dalton L.

Surgery

Truss

Pad

128664, 128689, A61B 502

Patent

active

041664540

ABSTRACT:
A cardiac monitor generates infrared light which is directed at the skin of an individual to be monitored. The light reflected from the skin is detected and automatically controlled. The pulsatile flow of blood in the underlying vascular network modulates the reflected light which is detected by a photo sensitive sensor which generates a signal indicative of the modulations. The modulated signal is coupled to a pulse detector which filters our spurious signals and generates one pulse for each systole in a cardiac cycle. The systolic pulse is coupled to a pulse interval to heartbeat rate converter which converts the interval between each succeeding systolic pulse into a signal which is preferably continuously and visually displayed to provide a continuous monitor of the heartbeat rate of the monitored individual.

REFERENCES:
patent: 3463142 (1969-08-01), Harte
patent: 3841314 (1974-10-01), Page
patent: 3858574 (1975-01-01), Page
patent: 3980075 (1976-09-01), Heule
patent: 4063551 (1977-12-01), Sweeney

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