Peripheral arterial monitoring instruments

Details Peripheral arterial monitoring instruments Peripheral arterial monitoring instruments

A - Human Necessities

61

B

A61B 5/021 (2006.01) A61B 5/022 (2006.01) A61B 5/0295 (2006.01)

Patent

CA 2122687

A method and apparatus are described for determining characteristics of peripheral arterial volume and compliance. A blood pressure cuff is inflated and deflated around a limb of the body and pressure measurements are taken. The volume of air removed from the cuff is determined in a quantifiable manner, such as by expelling air through an orifice of known characteristics or by means of a volume of know characteristics. The detected pressures and volume of air removed are used to compute oscillation volume, which in turn is used to display arterial capacity and compliance as a function of transmural pressure and time. Arterial capacity may be displayed in terms of arterial radius, arterial cross-sectional area, or arterial volume. Also, systolic and pulse pressures are determined using only these determined values.

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