PROBLEM TO BE SOLVED: To provide an endotracheal tube little causing attachment of sputum.SOLUTION: The endotracheal tube includes a distal end to be disposed at the lung side in the trachea, a proximal end provided at an opposite side of the distal end, and a tubular body having a respiration path formed inside thereof. The endotracheal tube further includes a film that has a sputum-repellent layer exposed to the respiration path, disposed at least at a part of inner peripheral surface of the tube body. The sputum-repellent layer includes metal oxide composite particles. The metal oxide composite particles includes a metal oxide particle, and a coating layer including fluororesin, formed on the surface of the metal oxide particle. A value obtained by dividing the fluororesin content in the metal oxide composite particles by a surface area per unit mass of the metal oxide particle is 0.025-0.180 mass%/(m2*g-1).SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】痰が付着しにくい気管用チューブを提供する。【解決手段】気管内の肺側に配置される先端部、および、先端部と反対側に設けられる基端部を有し、かつ、内部に呼吸路が形成されたチューブ体を備える気管用チューブであって、チューブ体の内周面の少なくとも一部に、呼吸路に露出する撥痰性層を有する被膜が配置され、撥痰性層は金属酸化物複合粒子を含有し、金属酸化物複合粒子は、金属酸化物粒子と、金属酸化物粒子の表面に形成されたフッ素系樹脂を含む被覆層とを含み、金属酸化物複合粒子中のフッ素含有量を金属酸化物粒子の単位質量あたりの表面積で除した値が0.025~0.180 質量%/(m2・g-1)であることを特徴とする気管用チューブ。【選択図】図1
