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    • 9. 发明授权
    • Systems and method for assessing functionality of dual check valve arrangements in medical tubing sets
    • 用于评估医疗管组中双止回阀装置的功能的系统和方法
    • US09265885B2
    • 2016-02-23
    • US13201632
    • 2010-09-28
    • Geoffrey S. Strobl
    • Geoffrey S. Strobl
    • A61M5/50A61M5/168A61M5/00A61M5/145A61B6/00
    • A61M39/24A61B6/548A61M5/007A61M5/14546A61M5/16854A61M5/5086A61M2005/14553A61M2205/15A61M2205/273A61M2205/3331A61M2205/702G01L7/00G01L9/00
    • A dual one-way check valve arrangement (300) that may be used for assessing an operating condition of at least one of first and second check valves (304, 308) situated in series along/within a section of a patient-specific section of tubing (244). A pressure sensor (332) may be associated with at least part of the flow path between the first and second check valves (304, 308) and may be operable to provide an indication of a failed condition of at least one of the first and second check valves (304, 308). In one embodiment, the pressure sensor (332) may change from a first state to a second state upon fluid pressure within the flow path between the first and second check valves (304, 308) falling below a predetermined level. For instance, the predetermined level may be a cracking pressure of at least one of the first and second check valves (304, 308). The change in state may be visually discernible on an exterior of the pressure sensor (332).
    • 一种双向单向止回阀装置(300),其可以用于评估沿着/在患者特定部分的部分内沿着/内部串联设置的第一和第二止回阀(304,308)中的至少一个的操作状态 管(244)。 压力传感器(332)可以与第一和第二止回阀(304,308)之间的流动路径的至少一部分相关联,并且可以用于提供第一和第二止回阀(304,308)中的至少一个的失效状态的指示 止回阀(304,308)。 在一个实施例中,当第一和第二止回阀(304,308a)之间的流动路径内的流体压力低于预定水平时,压力传感器(332)可以从第一状态改变到第二状态。 例如,预定水平可以是第一和第二止回阀(304,308)中的至少一个的开启压力。 在压力传感器(332)的外部可以在视觉上辨别状态的变化。