PROBLEM TO BE SOLVED: To provide a tracheal tube to which phlegm is hardly stuck.SOLUTION: The tracheal tube includes: a luminal body including a distal end disposed at a lung side in the trachea, a proximal end provided at an opposite side of the distal end, and an airway control lumen penetrating from the proximal end to the distal end a hydrophilic film A disposed at least at a part of an inner peripheral surface of the luminal body, and including a copolymer A that has a repeating unit (A) represented by a specific expression (1) and a repeating unit (B) represented by a specific expression (2), where a content of the repeating unit (A) with respect to the total repeating unit is 0.6-7 mol% and a water layer held by the hydrophilic film A and derived from a water content in phlegm.SELECTED DRAWING: Figure 3BCOPYRIGHT: (C)2018,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、上記先端部の反対側に設けられる基端部、および、上記基端部から上記先端部にかけて貫通する気道確保用ルーメンを有する管腔体と、上記管腔体の内周面の少なくとも一部に配置された、特定の式(1)で表される繰り返し単位(A)および特定の式(2)で表される繰り返し単位(B)を有し、かつ、全繰り返し単位に対する上記繰り返し単位(A)の含有量が0.6~7モル%である共重合体Aを含む親水性皮膜Aと、上記親水性皮膜Aに保持された、痰中の水分に由来する水層と、を備える気管用チューブ。【選択図】図3B
