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1. 发明授权

US5163907A Single use retractable needle syringe 失效
标题翻译：单用可伸缩针头注射器
公开(公告)号：US5163907A
公开(公告)日：1992-11-17
申请号：US720208
申请日：1991-06-24
申请人： Christine M. Szuszkiewicz
发明人： Christine M. Szuszkiewicz
IPC分类号： A61M5/31 , A61M5/32
CPC分类号： A61M5/322 , A61M2205/583 , A61M5/3129
摘要： A hypodermic syringe made up of a retractable needle assembly, a barrel, and a plunger. The needle assembly and the barrel are attached in such a way that they may be separated and the plunger and the needle assembly are adapted to be secured together. When the plunger is pushed all the way forward, the plunger and the needle assembly become secured to each other. When the plunger is pulled back, the needle is retracted. The needle assembly or the plunger and the barrel each have interlocking securing mechanisms to affix the needle assembly near the proximal end of the barrel. The mechanisms prevent the removal of the retracted needle assembly from the barrel. Thus, the syringe is not reusable and provides protection against accidental needlesticks. The syringe may have a compressible rubber collar around the tip of the plunger to provide for selective engagement of the plunger to the needle assembly and to expel all the fluid contents of the syringe.
摘要翻译：由可伸缩针组件，筒体和柱塞构成的皮下注射器。针组件和筒体以这样的方式附接，使得它们可以分离，柱塞和针组件适于固定在一起。当柱塞一直向前推动时，柱塞和针组件变得彼此固定。当柱塞被拉回时，针被缩回。针组件或柱塞和筒每个都具有互锁的固定机构以将针组件固定在枪管的近端附近。这些机构防止从筒体移除收回的针头组件。因此，注射器不可重复使用并提供防止意外针刺的保护。注射器可以具有围绕柱塞的尖端的可压缩橡胶环，以提供柱塞与针组件的选择性接合并且排出注射器的所有流体内容物。

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