| 摘要 |
The invention relates to an injection syringe for one-time use. Said syringe comprises a cylinder which has, on the bottom thereof, an outflow to the cannula and has, on the top end thereof, a collar. Said collar serves as a finger grip when using the syringe. The cylinder comprises two or more offset inner projections or bulges (20) which interact with recesses (17) of the piston shaft. The syringe also comprises a stopper with a slit (11) that is surrounded on all sides by one or more stopper sides (12), whereby, during filling, the inner projection (14) of the stopper walls interacts with the extreme tip (19) of the piston shaft by virtue of the fact that the extreme tip (19), during emptying, forces the stopper to rotate when the tip (19) of the piston shaft meets the slanted surface (15) of the stopper. The piston shaft and the stopper are, at the latest when emptying is ceased, mechanically and permanently separated from one another. The invention is characterized in that the stopper is provided with a non-circular cylindrical upper inner part comprised of at least two stopper sides (12) with a cavity (13) which, together, form an inner projection (14) for interacting with the extreme tips (19) of the piston shaft during filling, whereby the stopper walls are discontinued by a slit (11). |
