Living body function measuring apparatus

Details Living body function measuring apparatus Living body function measuring apparatus

1976-12-08

1978-09-26

Michell, Robert W.

Surgery

Truss

Perineal

128 205V, A61B 505

Patent

active

041162315

ABSTRACT:
A heart/lung function measuring apparatus comprises a source for permitting a constant slight current of a high frequency wave of predetermined frequency to flow through a to-be-measured portion of a living body, a voltage detection section detecting a voltage loop based on the impedance of the living body area, a sample-hold circuit for sampling a predetermined level of an output signal of the voltage detection section and holding the sampled value, a peak detector for generating a detector output according to a peak voltage of the output of the detection section, a pulse generator for generating a pulse signal which is applied as a trigger signal to the sample-hold circuit according to the output of the peak detector, and a subtractor for obtaining a difference output between the output of the voltage detection section and the output of the sample-hold circuit.

REFERENCES:
patent: 3316896 (1967-05-01), Thomasset
patent: 3340867 (1967-09-01), Kubicek et al.
patent: 3556083 (1971-01-01), Grichnik et al.
"Nasa Tech. Brief," No. 68-10220, Jun. 1968, 2 pp.

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