Intravascular pressure and flow sensor
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United States of America Patent
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Feb 23, 1999
Issued Date -
N/A
app pub date -
Sep 13, 1995
filing date -
Apr 29, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
An intravascular device for measuring blood pressure and flow is disclosed, which includes an elongate shaft having a pressure transducer and a flow transducer connected to its distal end. The pressure transducer may be a ferrofluid-type pressure transducer and the flow transducer may be an anemometer-type flow transducer. Measurement circuitry is also disclosed which provides a means for simultaneous measurement of both blood pressure and blood flow parameters. A sensor shield may be employed to isolate radial blood flow which is indicative of turbulent blood flow. An alternative blood flow measurement device is also disclosed which utilizes a thin metal film anemometer to measure flow in a vascular lumen.
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