ACOUSTICAL METHOD FOR MEASUREMENT OF ARTERIAL PRESSURE AND OTHER PHYSICAL PARAMETERS OF BLOOD AND CARDIOVASCULAR SYSTEM Russian patent published in 2017 - IPC A61B5/21 A61B5/225 A61B7/00 A61B8/00 

FIELD: medicine.

SUBSTANCE: acoustic sensor is placed. Continuous infrasound recording is performed with a wideband acoustic sensor. Arterial pressure is measured by a nonlinear relationship between pressure and artery diameter for longitudinal waves according to the Navier-Stokes equation. For this purpose, the acoustic pressure measurement is carried out evenly at a predetermined interval. The obtained values are processed by a digital filter with a finite-impulse response. After digital filtering, the resulting series of numbers form time series of pressure and acoustic pressure values. Further, the arterial pressure is calculated from the obtained time series according to the claimed formula.

EFFECT: device allows non-invasive and continuous measurement of arterial pressure by using a nonlinear relationship between pressure and artery diameter for longitudinal waves according to the Navier-Stokes equation.

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