PROBLEM TO BE SOLVED: To provide an endoscope guide tube device in which the diameter of an endoscope guide conduit can be increased while maintaining flexibility of the endoscope guide conduit.SOLUTION: There is provided the endoscope guide tube device including a flexible insertion tube for guiding the insertion part of a soft endoscope into a body cavity and an operation part connected to the proximal end part of the insertion tube and having an operation means for bending the insertion tube. The insertion tube includes an inner tube which has flexibility and stretchability and to the inside of which the insertion part of the soft endoscope can be inserted, and a cylindrical outer layer part extended so as to cover the outer side of the inner tube, the operation part includes a decompressing means for decompressing the outer layer part, and the inner tube is swollen roughly into a cylindrical shape so as to be roughly attached to the inner peripheral surface of the outer layer part when the outer layer part is decompressed by the decompressing means.COPYRIGHT: (C)2013,JPO&INPIT【課題】内視鏡案内管路の柔軟性を維持しながらも、その径を大きくすることが可能な内視鏡案内管装置を提供すること。【解決手段】内視鏡案内管装置が、体腔内に軟性内視鏡の挿入部を案内する可撓性の挿入管と、挿入管の基端部に連結され該挿入管を屈曲操作するための操作手段を有する操作部とを備えた内視鏡案内管装置であって、挿入管は、柔軟性及び伸縮性を有し内側に軟性内視鏡の挿入部を挿通可能なインナーチューブと、インナーチューブの外側を覆うように延設された円筒状の外層部とを備え、操作部は、外層部を減圧する減圧手段を備え、インナーチューブは、減圧手段によって外層部が減圧されたときに、外層部の内周面に略密着するように略円筒状に膨らむ。【選択図】 図2
