Electrosurgical generator with improved rapid start capability

Details Electrosurgical generator with improved rapid start capability Electrosurgical generator with improved rapid start capability

1982-12-08

1984-09-25

Cohen, Lee S.

Surgery

Truss

Pad

12830317, A61B 1239

Patent

active

044730756

ABSTRACT:
An electrosurgical generator, having particular utility in arthroscopic surgical procedures, is provided with a rapid start capability in its pure cut mode by inhibiting secondary modulation for an initial starting interval during which an uninterrupted high frequency cutting signal is applied to the output terminals. Upon expiration of the starting interval, the secondary modulation takes effect to modulate the cutting signal with a low frequency repetitive signal having a predetermined duty cycle. In addition, the generator output isolation transformer is arranged to provide an output impedance of at least 1,000 Ohms to match the impedance of human joints on which arthroscopic surgery is performed.

REFERENCES:
patent: 4038984 (1977-08-01), Sittner
patent: 4188927 (1980-02-01), Harris
patent: 4321926 (1982-03-01), Roge
patent: 4378801 (1983-04-01), Oosten

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