PROBLEM TO BE SOLVED: To provide an easily-manufacturable insertion instrument for a medical treatment tool in which a plurality of the treatment tools can be applied to a single incision, and a size or disposition of the treatment tool can be flexibly set.SOLUTION: An insertion instrument for a medical treatment tool that is to be placed on a body surface-side of a retracting means for maintaining an incision in an opened state, includes an elastic cap 4 in which a plurality of ports can be set which serves as an insertion opening of a medical treatment tool or an endoscope from extracorporeal into a body cavity. The elastic cap 4 is configured to be centesis penetrable except the region of circumferential edge portion 46, and is divided into: a port setting portion 41 installed in a center space and defined as a range in which a plurality of ports can be set by centesis penetration without providing in advance an opening for entering the body cavity and a port setting unacceptable part surrounding the port setting portion 41.COPYRIGHT: (C)2015,JPO&INPIT【課題】ひとつの切開創に複数の処置器具を適用可能な挿入器具において、処置器具のサイズや配置を自由に設定することができ、製造が容易な医療用処置具の挿入器具を提供すること。【解決手段】医療用処置具の挿入器具は、切開創を開いた状態に保持する開創手段の体表側に配置して、体外から体腔内への医療用処置具や内視鏡の挿入口となる複数のポートを設定可能な弾性キャップ4を備え、弾性キャップ4は、円周辺縁部46を除く領域が、穿刺貫通可能に構成され、かつ、体腔内への開口孔を予め設けずに穿刺貫通により複数のポートを設定可能な範囲として中央のスペースに画定されたポート設定部位41と、ポート設定部位41の周囲のポート設定非許容部とに分けられている。【選択図】図1
