Pulse rate monitoring device

Details Pulse rate monitoring device Pulse rate monitoring device

1976-04-26

1977-06-21

Kamm, William E.

Surgery

Truss

Perineal

128 205P, A61B 502

Patent

active

040304833

ABSTRACT:
A hand-held device which measures the period of a heartbeat, converts the measured period to beats per minute and displays the result on a digital read-out indicator. In using the device, the subject places his thumb in a depression formed in its case. Located in the depression are a light, a photo-sensor and an activating switch. The sensor responds to light transmitted through the thumb, the transmitted light being pulsed as blood is pumped into the thumb by the action of the heart.

REFERENCES:
patent: 3107664 (1963-10-01), Smith
patent: 3704706 (1972-12-01), Herczfeld et al.
patent: 3717140 (1973-02-01), Greenwood
patent: 3908636 (1975-09-01), Page

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