The cleaning tool of the insertion device has a cylindrical tip having a distal end portion of the insertion instrument mounted inside the cleaning tool main body and a plurality of cleaning ports spaced apart from each other on the inner peripheral surface of the cleaning tool main body, The cleaning water is sprayed onto the shielding wall surface which is a part of the inner peripheral surface of the opposing cleaning tool main body to weaken the momentum when the tip portion is detached, Prevent external scattering.挿入機器の洗浄具は、円筒で中空な洗浄具本体内に挿入機器の先端部を装着し、洗浄具本体の内周面に離間して配置した複数の洗浄口から先端部の揺動台とその周辺に異なる方向から噴射して洗浄し、先端部が離脱した場合には、洗浄水を対向する洗浄具本体の内周面の一部である遮蔽壁面に対して噴出して勢いを弱め、外部飛散を防止する。
