Continuous, non-invasive technique for determining blood pressure using a transmission line model and transcutaneous ultrasound measurements
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United States of America Patent
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Nov 24, 2009
Grant Date -
Sep 21, 2006
app pub date -
Mar 17, 2005
filing date -
Mar 17, 2005
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Abstract
A method and technique for the continuous, non-invasive measurement of blood pressure. The blood pressure measurement technique of the present invention utilizes ultrasound measurements to determine the diameter of the blood vessel in which the blood pressure is being measured as well as the flow rate of blood at both an input point and an output point along the blood vessel. The system utilizes a transmission line model to relate various blood vessel measurements with electrical components. The transmission line model, in combination with data management techniques including state variable representations and Kalman filtering, is used to develop a blood pressure measurement in real time.
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