PROBLEM TO BE SOLVED: To provide an assisting grip for an endoscope capable of easily increasing the insertion and withdrawal workability of an insertion part of the endoscope at low cost.SOLUTION: The assisting grip is structured by a grip body the whole of which is formed of a porous elastic body with an elastic deformability and the outer diameter of which is varied at least in two positions in the axial direction of the insertion part of the endoscope to make at least a large-diameter part and a small-diameter part. The grip body is hollowed out to allow the insertion part of the endoscope to be axially insertable through the large-diameter part and the small-diameter part, and a radial communication part is formed which is in radial communication from an inner peripheral surface of the hollow part to an outer peripheral surface of the hollow part. With the insertion part of the endoscope inserted through the hollow part, the friction force of the grip body to the insertion part increases when the grip body is gripped to be compressively deformed, and the friction force of the grip body to the insertion part decreases when the compressive deformation is released.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】低コストで簡単に挿入部の挿抜作業性を向上させることが可能な内視鏡用補助グリップを得る。【解決手段】全体が多孔質弾性体で形成されて弾性変形性を有し、挿入部の軸方向に位置を異ならせて外径の大きさを少なくとも大径部と小径部の2段階に異ならせた把持体により補助グリップを構成する。把持体には、大径部と小径部を貫通させて、挿入部を軸方向に挿通可能な中空部を形成し、さらにこの中空部に臨む内周面から外周面まで径方向に連通する径方向連通部を形成する。内視鏡の挿入部を中空部に挿通させた状態では、把持体を把持して圧縮変形させることにより挿入部に対する把持体の摩擦力が大きくなり、圧縮変形を緩めることにより挿入部に対する把持体の摩擦力が小さくなる。【選択図】図3
