Apparatus and a process for measuring the blood pressure by an i

Details Apparatus and a process for measuring the blood pressure by an i Apparatus and a process for measuring the blood pressure by an i

1984-07-26

1987-03-03

Cohen, Lee S.

Surgery

Truss

Pad

128687, A61B 502

Patent

active

046467491

ABSTRACT:
The invention provides a process and apparatus for externally measuring the arterial blood pressure of the patient by using at least one force sensor intended to be held pressed in the anatomical gutter of the radial artery with a constant force less than that created by the diastolic pressure of the blood flow in the radial artery, by detecting (21, 25, 27, 30) the maxima and the minima of the pressure signals, calculating (29,32,33) the average of the ratios R of these maxima and minima, increasing the application force until the blood flow (diastolic pressure P.sub.D) is disturbed, calculating the systolic pressure P.sub.S =P.sub.D .times.R.sub.m and displaying (17) the values P.sub.S and P.sub.D.

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patent: 4378807 (1983-04-01), Peterson et al.
patent: 4538618 (1985-09-01), Rosenberg et al.
Pressman et al.; "A Transducer for the Continuous External Measurement of Arterial BP"; IEEE Trans. on Biomed. Electronics, 4-1963, pp. 73-83.
Stein et al.; "Arterial Tonometry for the Atraumatic Measurement of Arterial BP"; J. of Applied Physiology; vol. 30, No. 4, 4-1971, pp. 593-596.
Geddes et al.; "Characterization of the Oscillometric Method for Measuring Indirect BP"; Annals of Biomed. Engineering, vol. 10, 1982, pp. 271-280.

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