Search International and National Patent Collections

1. (WO2018011847) ENDOSCOPE TREATMENT TOOL

Pub. No.:    WO/2018/011847    International Application No.:    PCT/JP2016/070394
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Tue Jul 12 01:59:59 CEST 2016
IPC: A61B 17/122
Applicants: OLYMPUS CORPORATION
オリンパス株式会社
Inventors: OSAKA Shingo
逢坂 真吾
TSUJI Tomohiro
辻 知宏
MAMIYA Tomohiko
間宮 朋彦
Title: ENDOSCOPE TREATMENT TOOL
Abstract:
This endoscope treatment tool (1) comprises: a tubular sheath part (61); an operation wire (62) that is arranged inside the sheath part (61) and that can project from and retract into a distal end of the sheath part (61); an arm member (11) that is connected to a distal end of the operation wire (62), has a pair of distal end parts, and can open and close; a holding tube (31) that is arranged at the distal end of the sheath part (61), a portion of the arm member (11) being inserted in the holding tube; and a biasing member (39) that is arranged between the arm member (11) and the holding tube (31), the biasing member having a biasing force for moving the arm member (11) toward the distal end side of the holding tube (31). The arm member (11) and the holding tube (31) respectively have projections (12b, 13b) and engagement parts (33) serving as a rotation restricting structure that prevents the arm member (11) from rotating about the axis of the holding tube (31) in a state where the arm member (11) is in contact with the holding tube (31) against the biasing force of the biasing member (39).