ETFE and PTFE, with the catheter which has the catheter layer which consists of the composition which is contained at mass ratio of the 99:1 - the 45:55, it possesses the same lubricity quality, as PTFE at the same time, it offers the catheter which possesses the tube intracavitary surface which consists of the material which possesses the tolerance for the radiation which PTFE has not had.ETFEとPTFEとを、99:1~45:55の質量比で含有する組成物からなるカテーテル層を備えるカテーテルで、PTFEと同程度の潤滑性特性を有し、かつ、PTFEが有していない放射線に対する耐性を有する材料からなる管腔内表面を具備するカテーテルを提供する。