PROBLEM TO BE SOLVED: To provide a cover member for a treatment instrument, which can be simply and inexpensively manufactured and which can prevent bacterial contamination.SOLUTION: A cover member for a treatment instrument is a cylindrical sheet member 11 that has elasticity enabling insertion of a treatment instrument 2. A front part is formed with a diameter smaller than a diameter of a rear part so that the cover member can be brought into intimate contact with a peripheral surface of the treatment instrument 2. An opening 16a capable of exposing a part of the treatment instrument 2 is provided in the circumferential direction of the front part.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】簡易且つ安価に製造可能であって、細菌汚染を防ぐことが可能な治療器具用カバー部材を提供する。【解決手段】治療器具2を挿入可能な伸縮性を有する筒状のシート部材11であって、治療器具2の周面に密着させるために前方部が後方部よりも小径に形成され、前方部の周方向に治療器具2の一部を露出可能な開口16aを有している。【選択図】図3
