PROBLEM TO BE SOLVED: To provide a guide tube capable of performing endoscopic examination as long as possible, even if the endoscope is affected by chemicals remaining in the tube.SOLUTION: A guide tube 4 for the endoscope includes an outer tube 11 having chemical resistance and flexibility, an inner tube 12 disposed in the outer tube 11, having chemical resistance and flexibility, and capable of allowing insertion of the insertion portion 5 of an endoscope 2, and a sealing member 24 for bringing the outer periphery of the insertion portion 5 into intimate contact with the inner periphery of the inner tube 12.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2018,JPO&INPIT【課題】内視鏡が管内に残存する薬品の影響を受けても、可能な限り長い時間内視鏡検査ができるガイドチューブを提供する。【解決手段】内視鏡用のガイドチューブ４は、耐薬品性と可撓性を有する外側チューブ１１と、外側チューブ１１内に配置され、耐薬品性と可撓性を有し、内視鏡２の挿入部５を挿通可能な内側チューブ１２と、挿入部５の外周部と内側チューブ１２の内周部とを密着させるシール部材２４を有する。【選択図】図３
