Surgery – Instruments – Electrical application
Patent
1991-05-07
1992-11-17
Cohen, Lee S.
Surgery
Instruments
Electrical application
A61B 1739
Patent
active
051639386
ABSTRACT:
A conductive wire 3 is inserted into a flexible sheath 2 with a wiring portion thereof exposed at a distal end portion of the sheath. Upon the pull of the wire 3, the distal end portion is curved and the exposed wire portion is pull taut to provide a wire portion for incision. A restricting member 5 is provided within the sheath 2 to restrict the direction in which the distal end portion of the sheath 2 is curved. As viewed from the proximal end side to the distal end side of the sheath 2, the wire portion 6 is located within an angle range of 0.degree. to 90.degree. leftwise from the aforementioned direction in a manner to diagonally follow the outer surface of the sheath 2 in a counterclockwise direction to the longitudinal axis of the sheath. An affected region in the body cavity of a human being is incised with a high-frequency current carried through the conductive wire.
REFERENCES:
patent: 4724836 (1988-02-01), Okada
patent: 4846125 (1989-06-01), Frimberger
patent: 5024617 (1991-06-01), Karpiel
Hanzawa Toshitaka
Kambara Koji
Okada Tsutomu
Saito Tatsuya
Sanagi Kenichiro
Cohen Lee S.
Olympus Optical Co,. Ltd.
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