This invention without causing thickly the diameter conversion of the connected region of the channel tube and the connected component and without obstructing assembly characteristic controls the damage and the like of the tube and designates that the endoscope which has the structure which can assemble securely is offered as purpose, because of that monolayer structure or the tube as it diverges, the divergence component with 21 which possesses the tube terminal area 21a where the tube is connected and the tube terminal area the tube by the fact that holding it does the tube makes stick makes the pipe conduit inside 30 which consists of the lamination structure of plural layers and endoscope function part 3 the divergence component lockChannel person in charge stopping component pushing the tube which keeps with 26 and the tube terminal area and the channel person in charge stopping component, it has with the conclusion component 25 which it makes stick, the channel person in charge stopping component has the taper section 26a which and covers the outer circle of the tube possesses one plane surface at least on the peripheral aspect of the taper section and is formed.本発明は、チャンネルチューブと接続部材との接続部位の太径化を招くことなくかつ組立性を阻害せずにチューブの損傷等を抑止し確実な組み立てを行い得る構造を備えた内視鏡を提供することを目的とし、そのために単層構造若しくは複数層の積層構造からなるチューブ30と、内視鏡操作部3内の管路を分岐すると共にチューブが接続されるチューブ接続部21aを有する分岐部材21と、チューブ接続部との間にチューブを挟持することでチューブを分岐部材に密着固定させるチャンネル係止部材26と、チューブ接続部とチャンネル係止部材との間に挟持されたチューブを押し付けて密着させる締結部材25とを備え、チャンネル係止部材はチューブの外周を覆うテーパ部26aを有しそのテーパ部の外周面上に少なくとも一つの平面を有して形成されている。
