Patent ID: 6432061
Filing Date: 2002-08-13
Classification: A61B

Abstract:
A method of measuring venous pressure non-invasively, comprising:applying a variable compressive acting pressure to a measuring point, on an artery in a person's extremity, at a compression point by a pressure generator, measuring the effect of the viable acting pressure on the artery at a second point, the second point being located farther away from the heart, and closer to the end point of the artery than the compression point to which the acting pressure is applied, transferring a measured value of the variable pressure acting on the measuring point at the compression point to an interpreting unit, measuring a pressure pulse caused by the heart at said second point by a sensor to measure the effect of the variable acting pressure, transferring said pressure pulse measurement to said interpreting unit, and determining a venous pressure by said interpreting unit on the basis of an acting pressure which is measured by a measuring element wherein said acting pressure is equal to said venous pressure when the interpreting unit detects a change characteristic of venous pressure in the pressure pulse signal measured by said sensor.