Provided is a bending treatment instrument which enables a reliable intuitive operation of a forceps, a knife, or the like in a single doctor who performs endoscope treatment. A bending portion 3 for performing a bending operation and an operation portion 8 for receiving an operation by the operator concerning the bending portion 3 are connected by a flexible tube 4 containing a transmitting member so that the operation at the operating portion 8 is curved A support portion 7 for supporting the operation portion 8 while grasping the flexible tube 4 and an operation portion 7 for operating the flexible tube 4 at the support portion 7 And a rotation support portion 11 for supporting the portion 8 so as to allow the shaft to rotate.内視鏡治療を行う単独の医師において鉗子やナイフ等の確実な直感的操作が可能となる屈曲処置具を提供する。 屈曲動作を行う湾曲部3と、当該湾曲部3に関する操作者の操作を受ける操作部8とを、伝達部材を内包する可撓性管体4で接続して、操作部8での操作を湾曲部3に伝達可能な機構を備えた屈曲処置具1において、可撓性管体4を把持しつつ操作部8を支持する支持部7と、支持部7において可撓性管体4に対し操作部8を軸回転可能に支持する回転支持部11とを含む構成とする。
