The long tubular component where the endoscope or the protective sleeve device which protects the intraperitoneal mirror instrument has the open proximal edge and the open distal (2036) edge, is included. The long tubular component is set and is constituted in order to receive the intraperitoneal mirror or the endoscope instrument which passes by that, size and. Demarcating the sleeve which is closed substantially, by possessing the folding section which the tubular component has engaged the intermediate section and release of the tubular component possibly, adjoins to the distal (2036) edge, you receive the instrument, prevent the penetration of the contaminant inside inside the tubular component substantially. As for the folding section, when it causes proximal power to the tubular component, removal of the tubular component which parallels to the instrument by being release possible from the intermediate section, becomes easy.内視鏡または腹腔鏡器具を保護する保護スリーブ装置は、開放近位端および開放遠位端を有する、細長い管状部材を含む。細長い管状部材は、それを通る腹腔鏡または内視鏡器具を受容するように寸法設定されかつ構成される。管状部材は、管状部材の中間部と解放可能に係合している、遠位端に隣接する折り畳み部を有することにより、実質的に閉じられたスリーブを画定して器具を受容し、管状部材の内部内の汚染物質の進入を実質的に防止する。折り畳み部は、管状部材に近位の力を及ぼすと中間部から解放可能であることにより、器具に沿う管状部材の除去が容易になる。