High frequency scalpel and endoscope system and method of operat

Details High frequency scalpel and endoscope system and method of operat High frequency scalpel and endoscope system and method of operat

1982-09-27

1985-05-21

Cohen, Lee S.

Surgery

Truss

Pad

128 4, 12830317, A61B 1739

Patent

active

045179760

ABSTRACT:
A high frequency scalpel system for use with a video system such as an endoscope using an imaging device essentially consists of a therapeutic electrode functioning as a surgical knife, and a high frequency oscillator for supplying high frequency power to the electrode. In the coagulation operating mode of the scalpel, frequency modulated driving current is applied to an affected part of a living body intermittently only during a horizontal blanking period of a video signal transmitted in the video system. In the blend mode, a mixed mode of the cutting and coagulation modes, the frequency modulated driving current is fed to the scalpel electrode with its larger amplitude falling in a horizontal blanking period and its smaller amplitude in a horizontal scanning period of the video signal. The imaging device and its associated circuitry in the endoscope may be shielded electromagnetically.

REFERENCES:
patent: 3566876 (1971-03-01), Stoft et al.
patent: 3942530 (1976-03-01), Northeved
patent: 4204528 (1980-05-01), Termanini
patent: 4228809 (1980-10-01), Paglione
patent: 4453547 (1984-06-01), Castel et al.

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