| 摘要 |
<p>An improved self-destruction syringe comprises a hollow cylinder (1), a plunger rod (2) sliding in the hollow cylinder (1), and a rubber stopper (3) mounted at the front end of the plunger rod (2). The diameter of the front end of the hollow cylinder (1) reduces gradually and the front end of the hollow cylinder (1) is molded with a connection needle ferrule (4) which is connected with the needle hub (6) mounted with a needle (5). A locking core (8) being capable of blocking the inner cavity of the connection needle ferrule (4) is disposed at the front end of the plunger rod (2). The inner wall of the connection needle ferrule (4) is molded with the elastic pawl (7) converging towards the center. A cone (9) for locked engagement with the elastic pawl (7) is molded on the locking core (8).</p> |
