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1. (WO2018042899) ADVANCEMENT/RETRACTION ASSISTING TOOL FOR TREATMENT TOOL, AND ENDOSCOPE SYSTEM

Pub. No.:    WO/2018/042899    International Application No.:    PCT/JP2017/025402
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Jul 13 01:59:59 CEST 2017
IPC: A61B 1/018
Applicants: OLYMPUS CORPORATION
オリンパス株式会社
Inventors: YAMADA, Tetsuhiro
山田 哲寛
Title: ADVANCEMENT/RETRACTION ASSISTING TOOL FOR TREATMENT TOOL, AND ENDOSCOPE SYSTEM
Abstract:
The advancement/retraction assisting tool for a treatment tool according to the present invention is provide with: a base having a through-hole; an attachment part for attaching the base to an endoscope so as to cause the through-hole to face a treatment tool insertion port of the endoscope; a first cylinder attached to the base so that the inside thereof is communicated with the through-hole; a second cylinder for sliding in an advancement/retraction direction with respect to the first cylinder along the center axis of the first cylinder, the second cylinder having a fixing part for fixing a treatment tool inserted in the treatment tool insertion port; an advancement/retraction mechanism for rotating the second cylinder and thereby moving the second cylinder in advancing/retracting fashion along the center axis relative to the first cylinder; and an assisting part for urging the second cylinder in a predetermined direction along the center axis relative to the base by an urging force smaller than a resistance force occurring during the sliding of the second cylinder, and assisting the rotation when the advancement/retraction mechanism rotates in one direction.