Capless medical backcheck valve
    46.
    发明授权
    Capless medical backcheck valve 失效
    无盖医疗回检阀

    公开(公告)号:US5439451A

    公开(公告)日:1995-08-08

    申请号:US351206

    申请日:1994-11-30

    IPC分类号: A61M39/26 A61M5/00

    摘要: A medical backcheck valve includes a hollow housing containing an upwardly biased piston assembly for controlling liquid flow therethrough. The piston assembly comprises a substantially rigid plug having one end protruding from the upper end of the housing, and a flexible sheath covering having a relatively small diameter upper end surrounding the plug, a main seal for controlling flow through said first flow space, and a tubular lower end, secured at the bottom of the housing, for preventing liquid from entering within the covering.

    摘要翻译: 医疗后检查阀包括一个中空的外壳,其中包含一个向上偏压的活塞组件,用于控制液体流过其中。 活塞组件包括具有从壳体的上端突出的一端的基本上刚性的塞子,以及围绕塞子的具有相对小直径的上端部的柔性护套,用于控制流过所述第一流动空间的主密封件,以及 管状下端固定在壳体的底部,用于防止液体进入覆盖物内。