Endoscopic high-frequency knife
OwnerHiroaki Gotoinventor
Life of this patent
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Abstract
An endoscopic high-frequency knife is provided in which, on the external wall of a sheath, two grooves for exposing a knife wire to the external wall surface are formed along the longitudinal axis and are punched to be spaced from each other. In addition, a knife chip fixed along the longitudinal axis of the sheath is provided at the tip end portion of the knife wire. The knife wire has a guide arm section formed by bending a portion adjacent to the knife chip. The guide arm section is disposed at the tip end groove. The tip end of an exposed portion exposed to the external wall side is overhung laterally of the sheath longitudinal central plane passing through the two grooves and the knife chip.
Claims10
An endoscopic high-frequency knife comprising:
- a flexible sheath adapted to be inserted into a body, said sheath having an external surface;
- a front-end slit and a rear-end slit arranged in line in the external surface of the sheath where a first imaginary plane including a central axis of the sheath intersects the external surface of the sheath;
- a conductive wire having an arm section protruding through the front-end slit, an incision section which is arranged continuous with the arm section, and an operation section which is continuous with the incision section and inserted through the rear-end slit into the sheath and which operates the incision section;
- wherein the arm section has a predetermined length and extends in a direction intersecting the first imaginary plane.
Dependencies are inferred from the claim text.