| 摘要 |
<p>A disposable hypodermic syringe having a barrel (11) with an adapter (13) on one end for attachment of a needle, and a piston (17) and plunger (16) reciprocable in the barrel. The plunger has a longitudinally extending hollow bore (40) therein and is removable from the barrel and lockable on the adapter in enclosing relationship to the needle to serve as a needle guard. A quantity of adhesive (51) in the plunger is pierced by the needle when the plunger is placed over the needle to serve as a needle guard, thereby permanently fixing the plunger/guard to the needle. In one form of the invention, the piston and plunger are automatically separable upon use to prevent reuse of the syringe.</p> |
