Title:
APPARATUS AND METHOD FOR MEASURING BLOOD PRESSURE
Document Type and Number:
Japanese Patent JPS57145641
Kind Code:
A
Abstract:
Blood pressure is measured by using an inflatable cuff to apply external pressure to a patient's body member, and measuring the amplitude of pressure oscillations induced in the cuff by blood flow in the body member as the cuff pressure is decreased in steps from a magnitude above an expected systolic (or diastolic) pressure to a magnitude below the expected systolic (or diastolic) blood pressure. The systolic (or diastolic) blood pressure is then determined by making a first linear approximation to a plurality of amplitude measurements occurring below the expected pressure and making a second linear approximation to a plurality of points occurring above the expected pressure, and finding the systolic (or diastolic) pressure E by setting the two approximations equal to determine their intercept D. Both the systolic and the diastolic blood pressure, and also the mean arterial pressure B (where the pressure oscillations reach a maximum) may be measured automatically using a microprocessor.
Inventors:
DONARUDO II NAN
ROBAATO DABURIYUU BIBAARITSUJI
ROBAATO DABURIYUU BIBAARITSUJI
Application Number:
JP1319382A
Publication Date:
September 08, 1982
Filing Date:
January 29, 1982
Export Citation:
Assignee:
BARD INC C R
International Classes:
A61B5/022; G06F17/00; (IPC1-7): A61B5/02