Arterial pulse rate monitor and stress warning device

Surgery – Truss – Pad

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Details

128698, A61B 502

Patent

active

044599927

ABSTRACT:
A rugged, relatively low cost, reliable warning device wearable on a person's body, preferably in the form of a bracelet or wristwatch. This device novelly utilizes the principal of natural sympathetic vibration or harmonic response of a fine metal reed, such as a finely drawn tungsten wire, to effect closing of an electrical circuit which hereby emits an appropriate warning signal or combination of signals. The device further embodies adjustable frequency of response calibration selection in combination with the selective electrical circuit features to promptly detect an excessive heartbeat or pulse rate. The signal emitted may be of audio, visual or sensory form or a combination thereof to warn the user against over exertion, stressful situations.
This device is unlike known prior art devices of the strain gauge and piezo-electric types, which rely upon electrical circuit resistance changes, as well as other types of the electromagnetic and pressure transducer types which use electrical circuit impulses to sense pulse rates.

REFERENCES:
patent: 2974521 (1961-03-01), Phelps
patent: 3535067 (1970-10-01), Lesher et al.
patent: 3841315 (1974-10-01), Kopp
patent: 3861387 (1975-01-01), Lawhorn et al.
patent: 3899649 (1975-08-01), Jenkins
patent: 4158962 (1979-06-01), Conoval
patent: 4262674 (1981-04-01), Uemura et al.

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