Patent ID: 8663221

Claim:
An endoscopic treatment tool comprising: a flexible sheath; an operating member inserted into the sheath so as to freely advance and retract in a longitudinal direction within the sheath; a treatment section disposed at a distal end of the operating member, the treatment section being configured to protrude and retract from the sheath by advancing and retracting the operating member; an operator section connected to a proximal end of the operating member, the operator section including a sliding member which freely advances and retracts relative to a main body of the operator section and makes the operating member advance and retract; and an abutting member disposed at a distal end of the sheath, wherein the operating member includes a first member which increases its rigidity by compression, a distal end of the first member is configured as a receiving portion which abuts the abutting member when the sliding member makes the operating member advance, the first member is configured to be compressed and to increase its rigidity by continuing to advance the sliding member in the longitudinal direction after the receiving portion abuts the abutting member, the treatment section is fixed to the distal end of the first member such that there is no relative motion between the treatment section and the distal end of the first member in the longitudinal direction, and the operating member and the abutting member are configured to prevent the distal end of the operating member and the treatment section from advancing so that a protrusion length of the treatment section from the sheath is set at a fixed length, when the sliding member continues to be advanced in the longitudinal direction after the receiving portion abuts the abutting member.