PROBLEM TO BE SOLVED: To provide a medical tube which is thin in thickness over its entirety while an outer layer and an inner layer are suitably prevented from being separated from each other.SOLUTION: A medical tube 10 includes a first layer 11 and a second layer 16 that is provided adjacent to an inner circumferential surface of the first layer. The medical tube also includes a wedge-shaped convex portion 17 that is provided on an outer circumferential surface 16a of the second layer so as to be widened radially outward, and a concave portion 12 that is provided on an inner circumferential surface 11a of the first layer and which the convex portion can engage, with the convex portion and the concave portion engaging each other.COPYRIGHT: (C)2016,JPO&INPIT【課題】外層と内層との間の剥離を好適に防止しつつ、全体として肉薄の医療用チューブを提供する。【解決手段】医療用チューブ10は、第1の層11と、第1の層の内周に隣接して設けられる第2の層16と、を有し、第2の層の外周面16aに設けられ、径方向外方に向かって幅が広くなる楔形状の凸部17と、第1の層の内周面11aに設けられ凸部が係合可能な凹部12と、を有し、凸部及び凹部は互いに係合してなる。【選択図】図4
