Surgery – Truss – Pad
Patent
1991-03-08
1992-10-20
Howell, Kyle L.
Surgery
Truss
Pad
128419PG, 1286611, A61B 812
Patent
active
051561573
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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J. L. Wessale et al., "Cardiac Output Versus Pacing Rate at Rest and with Exercise in Dogs With AV Block," PACE, vol. 11, pp. 575-582 (May 1988).
Nappholz Tibor A.
Valenta, Jr. Harry L.
Howell Kyle L.
Manuel George
Telectronics Pacing Systems Inc.
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