Optical Blood Pressure and Velocity Sensor
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United States of America Patent
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Issued Date -
Aug 30, 2007
app pub date -
Feb 25, 2007
filing date -
Feb 28, 2006
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Abandoned
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Abstract
A single point implantable optical sensor measures in vivo changes in blood pressure and velocity. An optical fiber waveguide in a catheter transmits light to M-Z interferometer. The wave propagation of fluctuating blood pressure in a living organism is measured by recording the time dependence optical signal losses as the wave traverse each leg of the M-Z device. The time lag between the pressure induced transmission losses at each spaced apart leg is used to calculate blood velocity at the location of the sensor. A plurality of the sensors may be distributed along or catheter in communication via a common optical waveguide.
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