Device and method for measuring volumetric blood flow in a vessel
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United States of America Patent
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Sep 26, 1989
Grant Date -
N/A
app pub date -
Feb 4, 1988
filing date -
Feb 4, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Device for measuring volumetric blood flow in a vessel comprising a catheter having proximal and distal extremities. A balloon is carried by the distal extremity of the catheter. A balloon inflation lumen is carried by the catheter and is in communication with the balloon. A toroidal ultrasonic transducer is carried by the catheter and is spaced proximally of the balloon. Electrical circuitry is provided for supplying electrical energy to the transducer. The transducer produces a large substantially uniform beam of ultrasonic energy to illuminate a vessel of approximately three centimeters in diameter with the ultrasonic energy.
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