| 摘要 |
<p>A disposable safety syringe which comprises a barrel (1), an injection needle (4) fitted on the fore end of barrel (1), a plunger (6) being slidable in barrel (1) from a syringe-filling utmost retracted position to a syringe-emptying forwardmost position, and which is fitted with a manually drivable stem (7) protruding from the rear end of barrel (1), a longitudinally slidable protective sleeve (12) slidably fitted on the outside of barrel (1), so as to be movable from a retracted rest position in which the needle (4) is exposed, into an advanced safety position in which the protective sleeve (12) extends around the needle (4), so as to entirely cover the same, and with locking means (23, 25) for automatically retaining in a not retractil manner the protective sleeve (12) to the barrel (1) in its advanced safety position <IMAGE></p> |
