Wrist-type pulse monitor

Details Wrist-type pulse monitor Wrist-type pulse monitor

1981-02-17

1983-09-27

Howell, Kyle L.

Surgery

Truss

Pad

128690, A61B 502

Patent

active

044062907

ABSTRACT:
A wrist-type pulse monitor for providing a digital readout of the rate of a heartbeat comprising a sensor adapted to detect a heartbeat in a body region where a heartbeat pulse normally occurs, a transducer coupled to the sensor for transforming each detected pulse into an electrical signal, an oscillator for producing electrical pulses at a predetermined frequency, means coupled to the transducer and the oscillator for counting the number of oscillator pulses occurring between detected heartbeats, arithmetic means coupled to the counting means for converting the heartbeat counted oscillator pulses to a heartbeat rate and means for visually displaying the heartbeat rate in digital form.

REFERENCES:
patent: 4096854 (1978-06-01), Perica et al.
patent: 4210294 (1978-10-01), Wolfe
patent: 4239048 (1980-12-01), Steuer
Atherton, J., "An Instantaneous Ratemeter With Digital Display", MBE, vol. 13, No. 5, pp. 669-673, Sep. 1975.
Timmerman, G., "HR Monitor Captures VLF Signals".
Stotts, L. J. et al., "Digital Beat-To-Beat Cardiotachometer", Amer. Jrnl. Phys. Med. .COPYRGT.1979, Williams & Wilkins (Apr. 1979, vol. 58, #2, pp. 86-90).
Reddy, P. et al., "All-Digital Instantaneous HR Meter", MBE & Computing, Jul. 1977, pp. 472-473.
Taylor, K. D. et al., "Precision Digital Instantaneous Cardiotach Using C.M.O.S. IC's, MBEC 1979, vol. 17, pp. 786-788.
Hartley, R. W. et al., "Analog Display Rate Meter Built Around Digital Switching Elements", MBE Jan. 1976, pp. 107-108.

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