| 摘要 |
<p>A tamperproof retractable non-reusable syringe has a one piece hollow outer body (12) with a barrel (14) for a slidable plunger, a transition zone and a smaller diameter nose portion (16). An elongated needle holder (22) and spring (24) combination is installable from the rear of the outer body, guided into the nose portion and held by cooperating inwardly and outwardly facing surfaces oriented in the direction of retraction at the most constricted part of the transition zone where the nose begins.</p> |
