[Problem]To provide a catheter such that it is possible to desirably maintain a state of being anchored within a lumen. [Solution] Provided is a catheter (1), comprising, on the outer face of a hollow shaft part (10), at least one bonding part (60) whereupon a plurality of protrusion parts (70) are positioned. The protrusion parts (70) are configured such that the contact surface area is increased and bonding force due to Van der Waals forces are manifested.
