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    • 5. 发明授权
    • Reloadable injector
    • 可重新注入
    • US5425715A
    • 1995-06-20
    • US102257
    • 1993-08-05
    • N. Lawrence DallingWilliam R. Pearson
    • N. Lawrence DallingWilliam R. Pearson
    • A61M5/20A61M5/24A61M5/32
    • A61M5/2033A61M2005/202A61M2005/2073A61M5/24A61M5/326
    • A reloadable automatic injector comprises a reusable power pack assembly for effectuating multiple injection operations. The power pack assembly includes an outer body and an energy releasing assembly disposed within the body. The energy releasing assembly is capable of providing multiple energy releasing strokes. A disposable cartridge assembly is provided which is engageable with the power pack assembly and forms an elongate injection assembly therewith. The cartridge assembly is adapted to receive energy from the power pack during one of the energy releasing strokes. The cartridge assembly includes a housing in which a charge of medicament and a needle is contained. A plunger is disposed within the housing for forcing the medicament through the needle. The cartridge assembly receives energy from the power pack assembly during one of the energy releasing strokes to enable the needle to project from the protected position to an unprotected projecting position from the housing and to enable the plunger to force the medicament through the needle. In addition, a needle return spring is provided for returning the needle from the unprotected position to the protected position within the housing so that the housing provides the needle with a rigid protective outer covering for sanitary disposal of the cartridge assembly.
    • 可重新装载的自动喷射器包括用于实现多次喷射操作的可重复使用的动力组件。 动力单元组件包括设置在主体内的外部主体和能量释放组件。 能量释放组件能够提供多个能量释放冲程。 提供了一次性盒式组件,其可与动力单元组件接合并与其形成细长的注射组件。 盒组件适于在一个能量释放冲程期间从动力组件接收能量。 盒组件包括容纳药物和针的装料的壳体。 柱塞设置在壳体内,用于迫使药物穿过针头。 药筒组件在能量释放冲程之一期间从动力单元组件接收能量,以使得针能够从保护位置突出到来自壳体的不受保护的突出位置,并且使柱塞能够迫使药物穿过针头。 此外,提供针复位弹簧用于使针从未受保护的位置返回到壳体内的受保护位置,使得壳体为针提供用于卫生处理盒组件的刚性保护性外罩。