Cardiac monitor wristwatch

Details Cardiac monitor wristwatch Cardiac monitor wristwatch

1975-09-19

1978-05-02

Kamm, William E.

Surgery

Truss

Perineal

128 205Z, 128 24A, A61B 502

Patent

active

040869164

ABSTRACT:
A cardiac monitoring system easily incorporated into existing electronic digital wristwatches. The self-contained unit monitors the arterial pulse rate by means of a pair of highly directional ultrasonic transducers positioned in a special mounting in the wrist band of the watch. This special mounting also includes an integrated circuit which contains the transmitter and receiver-detector electronics for connection to the transducers. The output signal from the receiver in the special mount is fed via a shielded cable in the wrist band to the processing electronics physically located within the face mounting of the watch. The processing electronics monitors the user's pulse rate and provides a digital output indication thereof if it exceeds pre-established upper and lower threshold limits. The processing circuitry also includes means for detecting an erratic heartbeat, such as a missing pulse or other irregularities, and provides an output alarm indication, both audio and visual, when such is detected. The unit is entirely self-contained and utilizes the wristwatch's standard battery power supply. External select switches are preferably provided for selection of either a time or pulse rate readout.

REFERENCES:
patent: 2854968 (1958-10-01), Wright
patent: 3057188 (1962-10-01), Henry
patent: 3444726 (1969-05-01), Young et al.
patent: 3587561 (1971-06-01), Zledonis
patent: 3608545 (1971-09-01), Novack et al.
patent: 3732532 (1973-05-01), Flaherty
patent: 3742937 (1973-07-01), Manual et al.
patent: 3766908 (1973-10-01), Haynes
patent: 3807388 (1974-04-01), Orr et al.
patent: 3859984 (1975-01-01), Langley
patent: 3948250 (1976-04-01), Weisman

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