Electrosurgical apparatus

Details Electrosurgical apparatus Electrosurgical apparatus

1979-01-16

1981-06-09

Cohen, Lee S.

Surgery

Truss

Pad

12830317, A61B 1739

Patent

active

042718376

ABSTRACT:
The present invention relates to an electrosurgical cutting device for the cutting and/or coagulation of tissue with RF current. A cutting electrode and a patient plate are connectable to the terminals of a RF generator. A control system, using a condition change arising at the cutting area during cutting as a controlled value, serves to control the RF current produced by the RF generator as a manipulated variable. The invention is characterized in that, for control of the RF-voltage of the RF generator, the control system responds to d-c voltage that arises at the cutting area during cutting with the RF current.

REFERENCES:
patent: 3923063 (1975-12-01), Andrews et al.
patent: 3964487 (1976-06-01), Judson
patent: 4114623 (1978-09-01), Meinke et al.
patent: 4122854 (1978-10-01), Blackett
patent: 4184492 (1980-01-01), Meinke et al.
patent: 4188927 (1980-02-01), Harris
Kowarschik, "Die Diathermie", 1930.
Roth, "Hochspannungstechnik", 1965.
Gerthsen et al., "Physik", 1971.

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