| 摘要 |
<p>A disposable injection syringe includes a gasket (7') having a passage (8) for slidably receiving an arrow pin (13), and a plunger (17) having a plunger head (16) for operatively locking the arrow pin (13) and a plurality of apertures (19). An alternative embodiment further includes a needle hub having a conical groove and a syringe tip having a conical projecting member for tightly engaging with the conical groove, whereby neither the injection syringe nor its needle alone can be reused after a first used.</p> |
