Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1993-08-09
2000-07-04
Willse, David H.
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
606169, A61B 1736
Patent
active
06083191&
ABSTRACT:
An electrical apparatus for driving an ultrasonic piezoelectric crystal transducer in a surgical handpiece for the fragmentation and aspiration of tissue, which apparatus includes an electronic control loop in combination with a voltage source amplifier having an output which is connected to the piezoelectric crystal transducer with a tuning inductor in parallel. A control system for monitoring the control loop and a component for controlling tissue selectivity are also disclosed.
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Sherwood Services AG
Willse David H.
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