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    • 9. 发明授权
    • Single-flow valve-hypodermic needle combination
    • 单流阀 - 皮下注射针组合
    • US4857061A
    • 1989-08-15
    • US181835
    • 1988-04-15
    • Michael D. Miller
    • Michael D. Miller
    • A61M5/31A61M5/50
    • A61M5/5013A61M2005/3128A61M2005/5053
    • A single flow valve is disclosed for use in a hypodermic needle. The flow valve comprises a valve chamber interposed between the needle and a syringe connector, and valve means mounted within the valve chamber. The valve means controls fluid flow through the valve chamber to a single-shot of fluid in one direction, and has a normal partially tensioned position, an optimum tensioned position on one side of the normal partially tensioned position, and a latched closed position on the opposite side of the normal partially tensioned position. The valve means is movable to its optimum tensioned position in response to fluid flow through the valve chamber in the one direction. The valve means is movable from the optimum tensioned position to its latched closed position in response to the inherent tension therein when the flow of fluid is abated. In the latched closed position, further fluid flow through the valve chamber in the one direction is prevented.
    • 公开了用于皮下注射针的单流量阀。 流量阀包括设置在针和注射器连接器之间的阀室,以及安装在阀室内的阀装置。 阀装置控制流体通过阀室流向单向流体的一个方向,并且具有正常的部分张紧位置,在正常部分张紧位置的一侧上的最佳张紧位置,以及锁定位置 正常部分张紧位置的相对侧。 响应于在一个方向上通过阀室的流体流动,阀装置可移动到其最佳张紧位置。 当流体流动减轻时,阀装置可响应于其中的固有张力而从最佳张紧位置移动到其闭锁位置。 在锁定的关闭位置,阻止沿一个方向流过阀室的另外的流体。