Electro-surgical devices

Details Electro-surgical devices Electro-surgical devices

1991-09-27

1993-12-14

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 48, 606 50, 606 51, A61B 1739

Patent

active

052697800

ABSTRACT:
A electrosurgical device for selectively carrying out bipolar coagulation tissue has a preferably elongate instrument housing (10) with a guide tube (14) for three mutually insulated contact rods (11, 12, 13) which are arranged therein. Two of the contact rods (12, 13) serve at their free ends as coagulation electrodes (22, 23) and the center one (11) serves as a cutting electrode (21) which can be moved towards or through the two coagulation electrodes. In this arrangement a switching device (16) is provided with the aid of which an Rf current suitable for bipolar coagulation can be applied to the coagulation electrodes (22, 23) in a first switch position. In a second switch position, the coagulation electrodes (22, 23) are connected in parallel while a potential suitable for tissue cutting is applied to the cutting electrode (21).

REFERENCES:
patent: 2032860 (1936-03-01), Wappler et al.
patent: 2056377 (1936-10-01), Wappler
patent: 4016881 (1977-04-01), Rioux et al.
patent: 4418692 (1983-12-01), Guay
patent: 4671274 (1987-06-01), Sorochenko

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