| 摘要 |
A single-use syringe (1) comprises a syringe barrel (2) and a syringe piston (3). The syringe barrel (2) which is open on one end has, on the other end, a front wall (5) which is closed apart from a needle attachment (4), and the syringe piston (3) comprises a piston shaft (8) projecting from the syringe barrel (2) and, inside the syringe barrel (2), a piston head (7) provided with an annular gasket (11). The annular gasket (11) is connected to the piston head (7) via a circumferential collar part (10). …<??>In order to obtain a smoothly operating and yet absolutely leakproof syringe, the collar part (10) has the shape of a truncated cone which expands toward the piston shaft (8), with the radial distance between the inner surface of the shell of the collar part (10) in the shape of a hollow truncated cone and the piston shaft (8) steadily increasing, and the annular gasket (11) designed in the shape of a coaxial cylinder adjoins the collar part (10) so as to project freely on the side of the piston head. …<IMAGE>… |
