Problem to be solved: to provide an endoscope in which the end of the spiral tube is securely fixed to the mouth and the flexible tube is properly and firmly connected to the other parts through the mouthpiece.In the endoscope, the flexible tube comprises a spiral tube in which the band member is spirally wound around the axis of the longitudinal axis and an outer covering covering the outer periphery of the spiral tube.The flexible tube is connected to one side in the direction along the longitudinal axis of the flexible tube, and the spiral tube is fixed to the outer periphery of the valve.In the spiral tube, a ring is provided on the outer peripheral side of the portion fixed to the outer periphery of the above described mouthpiece.The flexible tube covers the outer peripheral side of the ring, and is kept liquid tight between the outer sheath of the flexible tube and the tube.Diagram【課題】螺旋管の端部が口金に確実に固定され、可撓管が口金を介して他の部位に適切かつ強固に連結される内視鏡を提供すること。【解決手段】内視鏡では、可撓管は、長手軸の軸回りに帯部材が螺旋状に巻回される螺旋管と、前記螺旋管の外周側を被覆する外皮と、を備える。前記可撓管に対し前記長手軸に沿う方向の一方側には、口金が接続され、前記口金の外周に、前記螺旋管が固定される。前記螺旋管において前記口金の前記外周に固定された部位の外周側には、リングが設けられる。可撓性を有するチューブは、前記リングの外周側を被覆し、前記可撓管の前記外皮と前記チューブとの間は、液密に保たれる。【選択図】図２
