In the catheter (10), a tubular network reinforcing member (28) is arranged between the inner layer (24) and the outer layer (26) constituting the balloon (14). The reinforcing member (28) has a first thread (29) made of high strength fibers. At both axial end portions of the reinforcing member (28), annular expansion restricting portions (36) welded to the first thread (29) are provided, respectively. Expansion of circumferential direction of both end portions of the reinforcing member (28) is regulated by the expansion regulating portion (36).
