The injection needle for the endoscope (1) the insertion section at least the inside tube of the double tube which (3) is formed (6) and the outside tube (5) with the plastic material of the type which differs, at the same time the outside tube (5) is something which was formed with the material which is harder than as many as the inside tube (6). Because of this, operativity such as needle putting out operation being satisfactory, disposal tool for the endoscope and double tube for disposal tool such as the injection needle for the endoscope which can operate in stability vis-a-vis the disease are offered.内視鏡用注射針(1)の挿入部(3)を形成する二重チューブの少なくとも内チューブ(6)と外チューブ(5)とを異なる種類のプラスチック材料で、且つ外チューブ(5)が内チューブ(6)よりも硬い材料で形成したものである。これにより、針出し操作などの操作性が良好で、疾患に対して安定に操作することができる内視鏡用注射針などの内視鏡用処置具と処置具用二重チューブを提供する。
