Patent ID: 8974492
Filing Date: 2015-03-10
Classification: A61B

Abstract:
1. An endoscopic treatment tool, comprising: a treatment part which is adapted to conduct treatment of tissue within a body cavity; an operation part which is adapted to operate the treatment part, the operation part includes a main body in which a sliding space elongated in a longitudinal direction inside the main body is formed and a slider slidingly coupled to the main body and configured to be capable of relatively sliding with respect to the main body; an operation shaft member which connects the treatment part and the slider, the operation shaft member which is capable of moving relative to the main body in an axial direction of the operation shaft member; and a coil sheath part through which the operation shaft member passes so that the operation shaft member is capable of forward or backward movement, wherein the coil sheath part further comprises: a second end part of the second coil sheath is connected to a sliding member which is configured to freely slide inside the sliding space along the axis of the second coil sheath, the sliding member slides inside the sliding space in the axial direction of the second coil sheath in accordance with a difference in length between the first coil sheath and the second coil sheath occurring during bending of the coil sheath part.