Patent ID: 9474453
Filing Date: 2016-10-25
CPC Classification: A61B

Claim Text:
1. A method for non-invasively measuring a physiological parameter of a subject, comprising: applying to a body part of the subject a venous occlusion plethysmographic device including a first section and a second section, the applying comprising engaging the first section with a first engaged extent of a distal region of the body part including its distal tip, and engaging the second section with a second engaged extent of a proximal region of the body part; wherein the second engaged extent is adjacent to said first engaged extent at the side thereof facing the direction of venous blood flow toward the heart of the subject; pressurizing said first section to produce a static pressure field therein in which the pressure applied to at least a part of said first section exceeds the sum of the inherent venous pressure and the hydrostatic pressure prevailing within said body part; intermittently raising and lowering the pressure in said second section to a pressure above or equal to the pressure within said first section but below the arterial blood pressure; measuring changes in volume of said first engaged extent of the body part; and utilizing said measured changes in volume to provide a measure of said physiological parameter.