Apparatus, system and method for measuring spatial average veloc

Surgery – Truss – Pad

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604171, 248623, 248624, 248625, A61N 104

Patent

active

051634457

ABSTRACT:
System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel. The transducer receives ultrasonic energy back scattered from the red blood cells and provides an electrical output signal. A first moment detector is provided which receives the electrical output from the transducer and provides a first moment signal. Normalization is provided to the output of the first moment detector to provide an electrical output representing a characteristic of the flow of the liquid in the vessel.

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patent: 4282885 (1981-08-01), Bisping
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patent: 4554929 (1985-11-01), Samson et al.
patent: 4711027 (1987-12-01), Harris
patent: 4757827 (1988-07-01), Buchbinder et al.

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