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    • 31. 发明申请
    • Syringe
    • 注射器
    • US20070000556A1
    • 2007-01-04
    • US11429301
    • 2006-05-05
    • Jeffrey SmithDaniel Thayer
    • Jeffrey SmithDaniel Thayer
    • B65B31/00
    • A61M5/3234A61M2005/3151A61M2005/3242
    • 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 split brake members which are traversable between a braking position and a released position. At the braking position, fingers of the split brake member frictionally engage 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 split brake members are traversed to the released position, the fingers do 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分离制动构件。 在制动位置,分离制动部件的指状物摩擦地接合注射器的柱塞的轴的外表面。 摩擦接合抵消了将注射器的活塞推向缩回位置的回缩力。 当分离的制动器件被移动到释放位置时,手指不会压靠在轴的外表面上。 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。