PROBLEM TO BE SOLVED: To provide a treatment instrument capable of fixing wires to each other while the super elasticity of the wires being maintained, and a method for manufacturing the treatment instrument.SOLUTION: A method for manufacturing a treatment instrument including: a function member including at least one elastic wire formed of a wire material made of a material having a super elasticity and having a predetermined shape, and stationary portions formed individually with through holes allowing the elastic wire to be inserted for accommodating at least base end parts of the elastic wires in the insertion holes； a tubular pipe part having a tubular shape capable of receiving the a functional body； and operation means for inserting and removing the functional body into and out of the tubular part. The method comprises: an insertion step of inserting the base end part of the elastic wire into the insertion hole of the stationary part； a formation step of forming, at the base end part of the elastic wire, a retaining portion capable of being retained in the insertion hole of the stationary portion； and a fixing step of fixing the base end part of the elastic wire on the stationary portion.【課題】ワイヤの超弾性特性を維持した状態で、ワイヤ同士を固定することができる処置具の製造方法および処置具を提供すること。【解決手段】超弾性を有する材料からなる線材を用いて形成され、所定の形状をなす少なくとも一つの弾性ワイヤ、および該弾性ワイヤを挿通可能な挿通孔がそれぞれ形成され、該挿通孔に少なくとも弾性ワイヤの基端部を収容して固定する固定部を有する機能体と、機能体を収容可能な管状をなす管部と、管部に対する機能体の挿脱動作を行なう操作手段と、を備えた処置具を製造する処置具の製造方法であって、固定部の挿通孔に弾性ワイヤの基端部を挿入する挿入ステップと、弾性ワイヤの基端部に、固定部の挿通孔に係止可能な係止部を形成する形成ステップと、固定部に弾性ワイヤの基端部を固定する固定ステップと、を含む。【選択図】図３
