Endoscopic sheath includes a first tubular member having a longitudinal through hole, to form an opening in a direction perpendicular to the axis of the holding hole and the holding hole for movably holding the first tubular member and the stopper member having a recessed portion, and is fixed to one end of the first tubular member, a contact member having a contact surface that contacts the one end surface of the stopper member, the contact member and the stopper member is slidably deployable longitudinal through holes, capable of engaging the engagement portion on the operation unit, and a long hole communicating with the longitudinal through hole, moving range setting hole for setting the longitudinal moving range of the contact member, and a second tubular member having a positioning hole that is aligned to be able to form against the recess of the stopper member, the stopper member is disposed in the recess of the stopper member through the positioning hole of the second tubular member first and positioning and fixing member for positioning and fixing against two of the tubular member, it has and a knob portion that is fixed to the contact member via the mobile range setting hole in which the second tubular member is provided.内視鏡用シースは、長手軸方向貫通孔を有する第1の管状部材と、第1の管状部材を進退可能に保持する保持孔と保持孔の軸に対して直交する方向に開口を形成した凹部を有するストッパー部材と、第1の管状部材の一端部側に固定される、ストッパー部材の一端面に当接する当接面を有する当接部材と、当接部材及びストッパー部材が摺動自在に配置可能な長手軸方向貫通孔、操作部に係止可能な係止部、長手軸方向貫通孔に通じる長孔であって、当接部材の長手軸方向移動範囲を設定する移動範囲設定孔、及びストッパー部材の凹部に対して位置合わせ可能に形成された位置決め孔を具備する第2の管状部材と、第2の管状部材の位置決め孔を介してストッパー部材の凹部に配置されてストッパー部材を第2の管状部材に対して位置決め固定する位置決め固定部材と、第2の管状部材が具備する移動範囲設定孔を介して当接部材に固定されるつまみ部と、を具備している。
