<p>A syringe in which liquid leakage can be prevented even if a gasket is subjected to high pressure. The syringe is provided with a gasket (3) and a plunger rod (4). The gasket (3) slidably seals the inside of a barrel (2) on which a Luer taper section (5) is formed and has a cavity section (10) in its inner periphery side. The plunger rod (4) is connected to the gasket (3) through an anchor section (11). The anchor section (11) is projected from a pedestal section (18) having a tapered surface inclined at 5º - 45º relative to a plane orthogonal to the axial direction of the plunger rod (4), has a head contact section (22) coming into contact with the back side of a gasket (3) head, and has a contact member (12) that is loosely fitted on the outer periphery side of the anchor section (11) and is in contact with the inner peripheral wall of the gasket (3). The pedestal section (18) has a curved recess surface (20) between the head contact section (22) and the tapered surface, and the contact member (12) has a curved projection section (28a) at a position facing the curved recess surface (20). The barrel (2) has on its inner periphery side a lock tube (6) having a screw thread (7) formed on its inner periphery side. The syringe (1) is used for injection of a contrast agent.</p>
