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    • 8. 发明申请
    • Retractable Safety Syringe with Non-Loaded Seal
    • 带无负荷密封的伸缩式安全注射器
    • US20120022498A1
    • 2012-01-26
    • US12842884
    • 2010-07-23
    • Jeffrey SmithDaniel ThayerRex O. Bare
    • Jeffrey SmithDaniel ThayerRex O. Bare
    • A61M5/50
    • A61M5/3221A61M5/322A61M5/3234A61M2005/3235
    • A retractable safety syringe may have a needle, needle holder, syringe body, a shaft seal, and a plunger assembly. A proximal portion of the body and a piston of the plunger may define a vacuum chamber. The plunger assembly may comprise a shaft coupled to a piston. The shaft may have at least one non-engaging portion and at least one engaging portion. The plunger assembly is movable between a storage position and working positions. In the storage position, little or no force is exerted on the shaft seal by the non-engaging portion. In the working positions, the engaging portion is in sealing engagement with the shaft seal to seal the vacuum chamber. Stopper movement of the retractable safety syringe may be reduced or eliminated if the retractable safety syringe is prefilled.
    • 可伸缩的安全注射器可以具有针,针保持器,注射器主体,轴封和柱塞组件。 主体的近端部分和柱塞的活塞可以限定真空室。 柱塞组件可以包括联接到活塞的轴。 轴可以具有至少一个非接合部分和至少一个接合部分。 柱塞组件可在存储位置和工作位置之间移动。 在储存位置,很少或没有力通过非接合部分施加在轴封上。 在工作位置,接合部分与轴密封件密封接合以密封真空室。 如果可伸缩的安全注射器预填充,可缩小或消除可伸缩安全注射器的止动器移动。
    • 9. 发明申请
    • Multi-Chambered Retractable Safety Syringe
    • 多功能伸缩式安全注射器
    • US20120022447A1
    • 2012-01-26
    • US12842885
    • 2010-07-23
    • Richard B. OliverDaniel ThayerJeffrey SmithRex O. Bare
    • Richard B. OliverDaniel ThayerJeffrey SmithRex O. Bare
    • A61M5/50
    • A61M5/3234A61M2005/3151A61M2005/3224A61M2005/323A61M2005/3242
    • A retractable safety syringe may have a needle, needle holder, syringe body, and a plunger assembly. A proximal portion of the body and a piston of the plunger may define a vacuum chamber. The plunger assembly may comprise a distal piston and a proximal piston, with an intermediate chamber disposed between the two plungers. A vent through the syringe body pneumatically connects ambient air and the intermediate chamber allowing air to escape out of the intermediate chamber when a plunger assembly traversed toward the engaged position and allow air to be introduced into the intermediate chamber. A retraction force may be created by the vacuum chamber by traversing the plunger assembly to the engaged position. At the engaged position, the distal piston may engage the needle holder and the retraction force may retract the needle holder and needle into the syringe body to prevent accidental needle pricking and needle reuse.
    • 可伸缩的安全注射器可以具有针,针保持器,注射器主体和柱塞组件。 主体的近端部分和柱塞的活塞可以限定真空室。 柱塞组件可以包括远端活塞和近端活塞,其中设置在两个柱塞之间的中间室。 通过注射器主体的通气气路连接环境空气和中间室,当柱塞组件朝向接合位置移动并允许空气被引入中间室时,允许空气从中间室逸出。 通过将柱塞组件穿过接合位置,可以通过真空室产生回缩力。 在接合位置,远端活塞可以接合针保持器,并且缩回力可以将针保持器和针缩回到注射器主体中,以防止意外针刺和针重复使用。
    • 10. 发明授权
    • Syringe
    • 注射器
    • US08088104B2
    • 2012-01-03
    • US11888013
    • 2007-07-31
    • Jeffrey SmithDaniel ThayerRex O. Bare
    • Jeffrey SmithDaniel ThayerRex O. Bare
    • A61M5/00
    • A61M5/3234A61M2005/3224A61M2005/3242
    • A retractable needle safety syringe is provided having a braking mechanism. The braking mechanism may be disposed at a proximal portion of a syringe body of the syringe. The braking mechanism may comprise a brake member which is traversable between a braking position and a released position. At the braking position, the brake member frictionally engages an outer surface of the shaft of a plunger of the syringe. The frictional engagement counterbalances a retraction force that urges a piston of the syringe toward a retracted position. When the brake member is traversed to the released position, the brake member does not press against the outer surface of the shaft. As such, the retraction force may traverse the piston toward the retracted position and traverse a needle and needle holder into the body of the syringe.
    • 提供具有制动机构的伸缩针安全注射器。 制动机构可以设置在注射器的注射器主体的近端部分。 制动机构可以包括可在制动位置和释放位置之间移动的制动构件。 在制动位置,制动部件与注射器的柱塞的轴的外表面摩擦接合。 摩擦接合抵消了将注射器的活塞推向缩回位置的回缩力。 当制动构件横穿到释放位置时,制动构件不会压靠轴的外表面。 因此,缩回力可以朝向缩回位置移动活塞,并且将针和针保持器穿过注射器的主体。