Blood pressure measuring apparatus

Details Blood pressure measuring apparatus Blood pressure measuring apparatus

1975-10-17

1977-11-15

Michell, Robert W.

Surgery

Truss

Perineal

128 205C, 128 205M, A61B 502

Patent

active

040581179

ABSTRACT:
A fully automatic, non-invasive, digitally-controlled blood pressure measuring apparatus is described with LED displays for displaying systolic and diastolic blood pressure levels, an inflatable cuff for occluding an artery, a pump for inflating the cuff, a cuff-mounted sensor for detecting Korotkoff sounds, adjustable gain-amplifying apparatus for maintaining linearity of the Korotkoff sound levels over a wide range of human individuals, circuits for automatically determining systolic and diastolic pressure levels and pressure release apparatus for preventing overinflation of the cuff.

REFERENCES:
patent: 2405265 (1946-08-01), McAlpine
patent: 2869536 (1959-01-01), Speelman
patent: 3258009 (1966-06-01), London
patent: 3450131 (1969-06-01), Vogt
patent: 3533401 (1970-10-01), Streu
patent: 3552381 (1971-01-01), Burns
patent: 3814083 (1974-06-01), Fletcher
patent: 3893452 (1975-07-01), Birnbaum
patent: 3896791 (1975-07-01), Ono
patent: 3905354 (1975-09-01), Lichowsky
patent: 3906937 (1975-09-01), Aronson
patent: 3935984 (1976-02-01), Lichowsky et al.
Schulze et al., "A system . . . Blood Pressures," Southwestern Inst. of Electrical & Electronics Eng. Conf. Record, Apr. 1968, 5 pages.

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