PROBLEM TO BE SOLVED: To prevent resistance of a wire from increasing due to loss of a lubricant from the surface.SOLUTION: A long-sized device for medical treatment comprises: an insertion object made of solid or hollow elastic body, the insertion object extending along an axis and having a surface making a cylindrical surface around the axis one or more recesses or grooves recessed radially inward from the surface and a lubricant applied to the surface and the recesses or grooves.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】表面から潤滑剤が逸失してワイヤの抵抗が増すことがあった。【解決手段】医療用長尺器具は、軸に沿って延び、前記軸の周りに円筒面をなす表面を有した、中実または中空な弾性体よりなる挿入体と、前記表面から径方向に内方に窪んだ一以上の窪みまたは溝と、前記表面と前記窪みまたは前記溝とに塗布された潤滑剤と、を備える。【選択図】図2