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    • 74. 发明公开
    • Safety syringe and combination needle cannula and lock therefor
    • Sicherheitsspritze und Kombination vonNadelkanüleund ihrer Festhaltevorrichtung。
    • EP0351541A1
    • 1990-01-24
    • EP89110483.8
    • 1989-06-09
    • STERLING WINTHROP INC.
    • Haber, Terry McGovernFoster, Clark Berg
    • A61M5/32A61M5/24
    • A61M5/24A61M5/2466A61M5/322A61M5/344A61M5/346A61M2005/2414A61M2005/247A61M2005/31516A61M2005/3223A61M2005/3231
    • A combination retractable needle cannula (32;68) and cannula lock (22;70) which is to be interfaced with a prefilled medication carpule (2;62) at the cylinder of a conventional hypodermic syringe (50). The cannula lock includes a clamp having a pair of oppositely disposed jaws (26;76) which are normally separated from one another so that the needle cannula can be releasably retained therebetween. In the pre-injection state, the jaws of the clamp are surrounded by and rotated towards one another by an expandable outer sleeve (60) so as to retain the cannula in an axially extended position between the jaws for administering an injection. In the post-­injection state, and after the contents of the carpule have been expulsed via the cannula, the clamp is displaced by the carpule outwardly of the sleeve, whereby the jaws of the clamp are free to rotate away from one another to release the cannula. The cannula may then be retracted within and completely surrounded by the empty carpule so that the cannula can be safely discarded after use while avoiding an accidental needle stick and the spread of a contagious, and possibly life threatening, disease.
    • 组合的可缩回的针插管(32; 68)和插管锁(22; 70),其将与常规皮下注射器(50)的圆柱体处的预充式药物针头(2; 62)接合。 插管锁包括具有一对相对设置的夹爪(26; 76)的夹具,其通常彼此分离,使得针插管可释放地保持在其间。 在预注射状态下,夹具的夹爪被可膨胀外套筒(60)包围并相互转动,以便将套管保持在夹爪之间的轴向延伸位置,用于施加注射。 在后喷射状态下,并且在通过套管已经将小胡椒的内容物排出之后,夹具被套管向外的卡彼尔位移,由此夹具的夹爪可以彼此自由旋转以释放 插管。 然后套管可以缩回到空的小胡子内并完全被空的小胡子包围,使得插管可以在使用后被安全地丢弃,同时避免意外的针刺和蔓延的传染性和可能危及生命的疾病。