Surgery – Truss – Pad
Patent
1987-10-15
1989-04-18
Jaworski, Francis
Surgery
Truss
Pad
310317, 307106, 307270, A61B 1000
Patent
active
048217069
ABSTRACT:
A high voltage power driven circuit for producing variable power pulses is responsive to a fixed low amplitude voltage input pulse train for determining the timing of the variable pulses, and to a variable control voltage power source for determining the power level of the pulse. In one embodiment the circuit is used in conjunction with associated circuits for transmitting an apodized and focussed beam of coherent ultrasound from an ultrasonic transducer array.
REFERENCES:
patent: 3968452 (1976-07-01), Sahara et al.
patent: 4207772 (1980-06-01), Stoller
patent: 4550606 (1985-11-01), Drost
patent: 4644198 (1987-02-01), Ahmed
Russell Robert H.
Schleicher Israel D.
Haken Jack E.
Jaworski Francis
North American Philips Corporation
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