PROBLEM TO BE SOLVED: To provide a structure of the distal end portion of an endoscopic flexible tube that prevents adhesive and a nozzle from falling off from the distal end portion.SOLUTION: A structure is provided for attaching a nozzle 38 to a distalmost end portion 18 of an endoscopic flexible tube. The structure comprises: a protrusion 46 which is formed on the nozzle 38 and exposed on the outer peripheral surface and the front surface of the distalmost end portion 18 a narrow portion S provided on the outer peripheral surface an annular body 31 which is fitted to the distalmost end portion 18 and covers the outer peripheral surface and an annular member 32 comprising an engaging portion 33 which continuously provided on the edge of the annular body 31 and bulges to the front surface side. The protrusion 46 engages with the narrow portion S, thereby preventing the outer peripheral surface from being displaced in the circumferential direction of the outer peripheral surface. The protrusion 46 interferes with the annular member 32, which prevents the nozzle 38 from being displaced from the distalmost end portion 18 toward the front surface side.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】内視鏡の可撓管先端部の接着剤およびノズルの脱落を防止する構造を提供する。【解決手段】内視鏡可撓管の最先端部18にノズル38を取付けるための構造であって、ノズル38に形成されて最先端部18の外周面と前面に露出する突起46と、外周面に設けられた狭小部Sと、最先端部18に嵌合されて外周面を覆う環状本体31と、環状本体31の縁部に連設されて前面側に張出す係合部33を有する環状部材32とを備え、突起46が狭小部Sに係合することにより外周面の円周方向に変位することを阻止するとともに、突起46が環状部材32に干渉することによりノズル38が最先端部18から前面側に変位することを阻止する。【選択図】図2
