Bipolar radio-frequency surgical instrument

Details Bipolar radio-frequency surgical instrument Bipolar radio-frequency surgical instrument

1994-07-13

1995-08-15

Aschenbrenner, Peter A.

Surgery

Instruments

Electrical application

606 46, 604 95, 607156, A61B 1739

Patent

active

054414997

ABSTRACT:
The invention relates to a bipolar radio-frequency surgical instrument with a rigid tube shaft (11) and a working tip (12) which preferably has substantially the same cross-section as the adjoining part of the tube shaft (11) and is preferably centrally provided with at least one working electrode, such as a cutting electrode (13, 13") or a coagulating electrode (13') which can be energized with a radio-frequency voltage, and a neutral electrode (14) which preferably has a significantly larger surface. The working tip (12) is connected with the rigid tube shaft (11) near the distal end of the instrument in a hinged or flexible manner in such a way that the working tip (12) can be pivoted from a position which is axially aligned with the tube shaft (11) to a position which forms an angle relative to the tube shaft (11), and such that means (17, 18, 19) are provided to pivot and return the working tip (12).

REFERENCES:
patent: 4773395 (1988-09-01), Suzuki et al.
patent: 4834069 (1989-05-01), Umeda
patent: 4928669 (1990-05-01), Sullivan
patent: 5007908 (1991-04-01), Rydell
patent: 5192280 (1993-03-01), Parins
patent: 5220911 (1993-06-01), Tamura
patent: 5314466 (1994-05-01), Stern et al.
patent: 5330470 (1994-07-01), Hagen
patent: 5342357 (1994-08-01), Nardella
patent: 5360428 (1994-11-01), Hutchinson, Jr.

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