CATHETER WITH VALVE

PROBLEM TO BE SOLVED: To provide a catheter with a valve allowing smooth flow of a solution in both the cases where the solution is flowing from the inside of the catheter toward the outside of the catheter and where the solution is flowing from the outside of the catheter toward the inside of the catheter.SOLUTION: The catheter 11 with a valve includes a tubular body 12 made of an elastic and flexible synthetic resin material. The catheter 11 includes a valve B1 having a slit 16 that can be opened and closed by passing through the outer surface 12b of the tubular body from the inner surface 12a of the tubular body. A movable wall 15 sunken toward the inside of the tubular body 12 is provided in an end tip member region 14 of the tubular body 12. The location of the movable wall 15 has a structure with differences in hardness in the thickness direction of the tubular body 12. In the cross-sectional surface perpendicular to the center axis C1 of the tubular body 12, the movable wall 15 has a movable wall central portion P1 located at a position close to the center axis C1 and a movable wall tip portion P2 located at a position far from the center axis C1. The slit 16 configuring the valve B1 is formed on the movable wall tip portion P2.