| 摘要 |
<p>The invention regards a selflocking syringe. The syringe rod is equipped with an extractor which, when the syringe plunger is pushed to the end of the stroke, hooks the needle and withdraws it by means of a preloaded spring to the inside of the rod, into a protected and inaccessible position, thus making the syringe unserviceable already after its first use. <IMAGE></p> |
