PROBLEM TO BE SOLVED: To provide a device for a medical treatment which includes not only a function for applying turning force to a guide wire but also a function for inserting an end portion of the guide wire into an opening of a catheter and therefore is excellent in workability.SOLUTION: The device for the medical treatment includes a guide wire connecting section 1 capable of being connected to a guide wire 3 to apply turning force to the guide wire 3, and a catheter connecting section 2 to which a catheter 4 can be connected and which can relatively move toward and away from the guide wire connecting section 1.COPYRIGHT: (C)2013,JPO&INPIT【課題】ガイドワイヤに対して回転力を与える機能を備え、かつガイドワイヤの端部をカテーテルの開口部に挿入する機能をも備えることで作業に優れる医療用デバイスを提供する。【解決手段】ガイドワイヤ3に回転力を付与可能に当該ガイドワイヤ3と連結可能なガイドワイヤ連結部1と、カテーテル4を連結可能であって前記ガイドワイヤ連結部1と相対的に近接離間可能なカテーテル連結部2と、を有する医療用デバイスである。【選択図】図1