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1. (WO2018185817) OVERTUBE AND MEDICAL SYSTEM

Pub. No.:    WO/2018/185817    International Application No.:    PCT/JP2017/013983
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Tue Apr 04 01:59:59 CEST 2017
IPC: A61B 17/00
Applicants: OLYMPUS CORPORATION
オリンパス株式会社
Inventors: TAKEMOTO, Shotaro
竹本 昌太郎
Title: OVERTUBE AND MEDICAL SYSTEM
Abstract:
The purpose of the present invention is to more reliably prevent a load from being applied to surrounding tissue in a body cavity from when a medical device is inserted into a channel in a state where shape fixation has been released, or from when shape fixation is released in a state where a medical device has been inserted into a channel. This overtube (1) comprises: a flexible elongated section (3) that is provided with a channel (2) that penetrates through the longitudinal direction; a shape fixation mechanism (4) that is provided to the elongated section (3) and that can switch the elongated section (3) between a curvable state and a fixated-shape state; and a gate mechanism (13) that is disposed on a proximal end side of the elongated section (3) and closes the channel (2) when the elongated section (3) is switched by the shape fixation mechanism (4) to the curvable state, and opens up the channel (2) when the elongated section (3) is switched by the shape fixation mechanism (4) to the fixated-shape state.