Problem to be solved: to provide an instrument for preventing an endogenous tissue, such as an internal vessel, a blood vessel or a nerve, from being damaged in the inside of the body unexpectedly by the tip of the endoscope equipment.Solution: an elastic disk made of elastic material having a thickness slightly larger than the diameter of the endoscope in the center of the circle, and an instrument 1 having one cut from the hole to the outside of the disc, and a disk-shaped instrument is placed on the skin 3 and the supporting member, and the cut is expanded, and the center thereof is an endoscope It can be placed so as to sandwich two, and the thickness of the endoscope can be prevented from being deeply depressed.Diagram【課題】内視鏡機器の先端が予想外に体内奥深くに落ち込むことにより、内臓、血管や神経などの重要組織を損傷させることを防止する器具を提供する。【解決手段】弾性素材でできた厚みのある円盤状で、円の中心には内視鏡径より少し太い穴があり、その穴から円盤の外まで１本の切込みがある器具１であって、円盤状の器具を皮膚３や支えになるものの上に置き、切込みを広げることで、その中心に内視鏡２を挟むように設置でき、その厚みで内視鏡が体内深くに落ち込む事を防ぐことができる。【選択図】図２
