Catheter with valve

A catheter having a tubular body formed from an elastic and flexible synthetic resin material and being equipped with a valve having a slit that can be opened and closed, the slit passing through an outer surface of the tubular body from an inner surface of the tubular body,

• the catheter being characterized by allowing passage of a solution from the inside of the tubular body towards the outside of the tubular body through the slit and passage of a solution from the outside of the tubular body towards the inside of the tubular body through the slit,
• the catheter being provided with a movable wall sunken towards the inside of the tubular body at a tip of the tubular body, at least the movable wall having differences in hardness in the thickness direction of the tubular body, and in the cross-sectional surface perpendicular to the center axis of the tubular body, the movable wall having a wall central portion located at a position close to the center axis and a wall tip member located at a position far from the center axis along with the slit comprising the valve being formed on the wall tip member.