Jewelry and bracelet heartbeat monitor

Details Jewelry and bracelet heartbeat monitor Jewelry and bracelet heartbeat monitor

1975-12-04

1977-10-11

Michell, Robert W.

Surgery

Truss

Perineal

128 205T, 128 206F, A61B 502

Patent

active

040529797

ABSTRACT:
A device for monitoring the heartbeat of an individual at a pulse point. Fundamentally, the invention comprises two piezoelectric sensors arranged in close parallel relationship with each other and differentially connected to an amplifier circuit. One of the sensors lies over the pulse point of the individual while the other lies therebeside. A rate detector receives the amplified outputs of the sensors and determines the pulse rate from the heart. If this rate exceeds a predetermined level, a signal is passed to enable an oscillator of audible frequency; the output of the oscillator being connected to any earphone speaker to produce a warning sound.

REFERENCES:
patent: 2492617 (1949-12-01), Boland et al.
patent: 2658505 (1953-11-01), Sheer
patent: 3138151 (1964-06-01), Chapman et al.
patent: 3176681 (1965-04-01), Smith
patent: 3835837 (1974-09-01), Peek
patent: 3838684 (1974-10-01), Manuel et al.
patent: 3858574 (1975-01-01), Page
patent: 3863626 (1975-02-01), Huber
patent: 3903873 (1975-09-01), Royal et al.

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