PROBLEM TO BE SOLVED: To provide a guidance sheath that can be prevented from falling from a body cavity to achieve stable operation.SOLUTION: A cylindrical guidance sheath 10 for guiding an insertion part 20 of a medical implement to be inserted into a body cavity includes: a proximal end side opening part 11 which is provided on a proximal end side of the guidance sheath 10, and to which the insertion part 20 is introduced a distal end side opening part 12 which is provided on a distal end side of the guidance sheath 10 a flexible bent part 13 which is provided on the distal end side of the guidance sheath 10 and formed in a curved shape and a drawing opening part 14 which is formed on the outer side surface of the bent part 13, and from which the insertion part 20 is drawn out.COPYRIGHT: (C)2013,JPO&INPIT【課題】体腔内からの抜け落ちを防止して、安定的に作業を行うことができる誘導シースを提供する。【解決手段】体腔内に挿入される医療器具の挿入部20を誘導する筒状の誘導シース10であって、誘導シース10の基端側に設けられ、挿入部20が導入される基端側開口部11と、誘導シース10の先端側に設けられた先端側開口部12と、誘導シース10の先端側に設けられ、湾曲形状に癖付けられた可撓性を有する湾曲部13と、湾曲部13の外側側面に形成され、挿入部20が導出される導出開口部14とを備える誘導シース10を採用する。【選択図】図3
