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    • 5. 发明专利
    • Single-use syringe
    • AU7672094A
    • 1995-03-27
    • AU7672094
    • 1994-08-17
    • RICHARDS DONALD C
    • RICHARDS DONALD CLYDE
    • A61M5/32A61M5/00
    • A single-use syringe having a needle which retracts upon a full depression of its plunger and thus, renders the syringe non-reusable. The plunger selectively engages the barrel of the syringe so as to limit the withdraw of the plunger relative to the barrel. The barrel has formations extending therefrom which selectively and matingly engage formations extending from the plunger so as to selectively limit the travel of the plunger relative to the needle and retract the needle into a concealed position. The nose of the barrel carries a split ring which is contractible to permit a rearward displacement of the barrel and the needle attached thereto relative to the stationary housing upon a full depression of the plunger. The travel of the barrel relative to the stationary body is terminated by dogs located proximate the forward end of the nose which are engageable with the notches in the stationary housing upon the rearward displacement of the barrel relative to the stationary housing. A cap may be provided for sheathing the needle prior to use.
    • 10. 发明申请
    • SINGLE-USE SYRINGE
    • 单用SYRINGE
    • WO1995007112A1
    • 1995-03-16
    • PCT/US1994009454
    • 1994-08-17
    • RICHARDS, Donald, Clyde
    • A61M05/00
    • A61M5/326A61M5/3202A61M2205/583
    • A single-use syringe having a needle (120) which retracts upon a full depression of its plunger (124) and thus, renders the syringe non-reusable. The plunger (124) selectively engages the barrel (C) of the syringe so as to limit the withdraw of the plunger relative to the barrel. The barrel (C) has a formation (82, 86) extending therefrom which selectively and matingly engages a formation (142) extending from the plunger (124) so as to selectively limit the travel of the plunger (124) relative to the needle (120) and retract the needle (120) into concealed position. The nose (88) of the barrel carries a split ring (96) which is contractible to permit a rearward displacement of the barrel (C) and the needle (120) attached thereto relative to the stationary housing (B) upon a full depression of the plunger (124). The travel of the barrel (C) relative to the stationary body is terminated by dogs (110) located proximate the forward end of the nose (88) which are engageable with the notches (58) in the stationary housing (B) upon the rearward displacement of the barrel (C) relative to the stationary housing (B). A cap (186) may be provided for sheathing the needle (120) prior to use.
    • 一种一次性注射器,其具有在其柱塞(124)的完全凹陷时缩回的针(120),从而使注射器不可重复使用。 柱塞(124)选择性地接合注射器的筒体(C),以限制柱塞相对于筒体的抽出。 桶(C)具有从其延伸的地层(82,86),其选择性地并且配合地接合从柱塞(124)延伸的地层(142),以便选择性地限制柱塞(124)相对于针的移动 120)并将针(120)缩回隐藏位置。 桶的鼻部(88)带有一个开口环(96),该开口环可收缩,以允许在完全凹陷时能够相对于固定壳体(B)附接到其上的筒体(C)和针头(120)向后移位 柱塞(124)。 筒(C)相对于固定体的移动由位于鼻部(88)的前端附近的狗(110)终止,其可与固定壳体(B)中的凹口(58)接合在后部 筒体(C)相对于固定壳体(B)的位移。 可以提供帽(186)以在使用之前护套针(120)。