High-frequency generator for tissue cutting and for coagulating

Details High-frequency generator for tissue cutting and for coagulating High-frequency generator for tissue cutting and for coagulating

1989-05-05

1992-04-28

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 39, 606 40, A61B 1739

Patent

active

051083914

ABSTRACT:
The invention relates to a high-frequency generator with automatic power control for tissue cutting and for coagulating in high-frequency surgery. The power control in the "cutting" mode of operation is effected with an arc control system for keeping the arc burning between the surgical probe and the tissue constant. The high-frequency generator contains a voltage-limiting circuit, which limits the output voltage to a preset maximum value if the arc control system were to adjust a higher voltage.
The advantage of the invention lies is a reduction of the mean power delivered to the patient as compared with a high-frequency generator that contains only an arc control system. The cutting quality is not adversely influenced by the power reduction.

REFERENCES:
patent: 4114623 (1978-09-01), Meinke et al.
patent: 4617927 (1986-10-01), Manes

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