Surgery – Instruments – Electrical application
Patent
1998-01-06
1999-12-14
Cohen, Lee
Surgery
Instruments
Electrical application
606 46, 606 51, 606170, 606174, A61B 1739
Patent
active
060010967
ABSTRACT:
The invention is related to an instrument for endoscopic surgery. The instrument comprises a casing 10, further comprises a sliding tube 16 which extends into the casing with its proximal end 20 and which is disposed longitudinally slidable with respect to the casing by means of an actuating mechanism 38, further comprises an electrode tube 18 which extends through the sliding tube 16, which extends into the casing with its proximal end and is axially lockable therein, and further comprises two isolated wire pieces 32 which extend through the inside of the electrode tube 18. The wire pieces 32 which are adapted to be subjected to a high frequency current comprise branches 30 which protrude over the electrode tube 18 and the sliding tube 16 at their distal end, which are spread apart from one another slanted in opposite directions, which are elastically bendable with respect to each other in a radial direction against a spring force acting in the direction of spreading during a movement of the sliding tube 16, and which carry isolated bending sections 48 and, at their free ends, metallic electrodes 56. In order to be able to mechanically cut as well as coagulate, in a bipolar manner, biological tissue with the instrument, it is proposed according to the invention that the electrodes 56 are formed to be cutting blades having cutting edges 54, which are adapted to be moved with respect to each other in a scissor-like fashion under the action of the sliding tube 16 on the bending sections 48.
REFERENCES:
patent: 5258006 (1993-11-01), Rydell et al.
patent: 5330471 (1994-07-01), Eggers
patent: 5334198 (1994-08-01), Hart et al.
patent: 5486185 (1996-01-01), Freitas et al.
patent: 5827281 (1998-10-01), Levin
Bissinger Gunter
Hug Bernhard
Scarfi Andrea
Scholz Clemens
Cohen Lee
Gunter Bissinger Medizintechnik GmbH
Huttinger Medizintechnik GmbH
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