Patent ID: 8048073

Claim:
An endoscopic instrument comprising: an incising section inserted into a body cavity endoscopically for incisional intervention; a wire having a distal end connected to the incising section; a sheath, made from insulative material, for allowing the wire to pass therethrough; a main body having a proximal end of the sheath fixed thereto, the proximal end being capable of freely rotating in a circumferential direction; a slider, having a proximal end of the wire fixed thereto, disposed slidably in an axial line direction of the main body; a stopper, provided to the incising section or the wire, for projecting outward radially relative to the wire; a first-distal-regulation section, provided to the sheath, for regulating distal sliding movement of the wire by making contact with the stopper; and a second-distal-regulation section, provided distally relative to the first-distal-regulation section, for regulating distal sliding movement of the wire by making contact with the stopper, wherein the stopper is capable of moving between the first-distal-regulation section and the second-distal-regulation section by rotating the main body relative to the sheath around an axial line by a predetermined rotational angle, and the incising section can be maintained at two different projection lengths based on the stopper making contact with the first-distal-regulation section or the stopper making contact with the second-distal-regulation section.