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    • 117. 发明申请
    • RETRACTABLE NEEDLE SYRINGE WITH NEEDLE TRAP
    • 可收缩针刺针与针钩
    • WO2007101090A2
    • 2007-09-07
    • PCT/US2007062663
    • 2007-02-23
    • SAFETY MEDICAL INTERNATIONAL IRUNFOLA VINCENTYU LI XIAN
    • RUNFOLA VINCENTYU LI XIAN
    • A61M5/3234A61M5/3135A61M5/31511A61M5/31515A61M5/3202A61M5/502A61M5/508
    • A syringe includes a hollow barrel and a hollow plunger extending into the barrel and being axially movable within the barrel, where the plunger includes an end wall that is releasably secured to the plunger at an opening disposed at a distal end of the plunger and is movable to disengage with the plunger distal end opening during use of the syringe to facilitate access to a retraction cavity disposed within the plunger. A needle assembly is secured within and at a distal end of the barrel. The needle assembly includes a needle holder with a connector to secure a needle to the needle holder. The needle holder is biased toward the proximal end of the barrel and is configured to be forced into the retraction cavity of the plunger upon complete depression of the plunger distally within the barrel, and the plunger includes at least one protrusion that extends from an internal wall surface of the plunger within the retraction cavity and is configured to engage with and limit or prevent movement of portions of the needle assembly that have been forced into the retraction cavity.
    • 注射器包括中空筒体和延伸入筒体的中空柱塞,并且在筒体内可轴向移动,其中柱塞包括端壁,该端壁在设置在柱塞的远端处的开口处可释放地固定到柱塞,并且可移动 在使用注射器期间与柱塞远端开口脱离接触以便于进入设置在柱塞内的回缩空腔。 针头组件被固定在镜筒的远端内和在其远端。 针组件包括具有用于将针固定到针保持器的连接器的针保持器。 针保持器被朝向筒的近端偏压,并且被构造成在柱体中在柱体中向远侧完全压下柱塞时被迫进入柱塞的缩回腔,并且柱塞包括至少一个从内壁延伸的突起 所述柱塞在所述缩回空腔内的表面,并被构造成与已经被强制进入所述缩回腔的所述针组件的部分接合并限制或阻止所述针组件的运动。