High frequency scalpel and endoscope system and method of operating same
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United States of America Patent
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-
May 21, 1985
Grant Date -
N/A
app pub date -
Sep 27, 1982
filing date -
Oct 20, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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