Catheter-mounted doppler ultrasound transducer and signal processor
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United States of America Patent
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Oct 20, 1992
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N/A
app pub date -
Mar 8, 1991
filing date -
Mar 8, 1991
priority date (Note) -
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Abstract
A Doppler ultrasound transducer and interconnected high frequency signal processing circuit, adapted for operative coupling on a distal portion of an intravascular catheter, for ultrasonically sensing high frequency signals representative of blood flow within a patient's cardiovascular system, processing these high frequency signals into baseband audio signals, and communicating these audio signals to associated low frequency signal processing circuitry located in the proximal portion of the catheter by modulating the load current of a power supply within the high frequency circuit.
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