Constant output electrosurgical unit

Details Constant output electrosurgical unit Constant output electrosurgical unit

1976-06-14

1978-06-06

Michell, Robert W.

Surgery

Truss

Pad

12830317, 128422, 330107, 331183, A61B 1736, A61N 300

Patent

active

040929868

ABSTRACT:
An electrosurgical unit which provides a voltage output to a load. An oscator in the unit produces the output of a given frequency. A switching circuit coupled to the oscillator provides an unmodulated RF carrier from the oscillator for use in cutting procedures and a pulse modulated RF voltage from the oscillator for use in coagulation procedures. A feedback circuit is coupled from the output to the input of the oscillator to maintain the output voltage level from the unit at a substantially constant value independent of the load.

REFERENCES:
patent: 2993178 (1961-07-01), Burger
patent: 3284724 (1966-11-01), Marlow
patent: 3512102 (1970-05-01), Kubach
patent: 3730188 (1973-05-01), Ellman
patent: 3875945 (1975-04-01), Friedman
patent: 3964487 (1976-06-01), Judson
patent: 4032860 (1977-06-01), LeVeen

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