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    Pressure regulating valve for use in continuous positive airway pressure devices
    2.
    发明授权
    Pressure regulating valve for use in continuous positive airway pressure devices 有权

    公开(公告)号：US06766800B2

    公开(公告)日：2004-07-27

    申请号：US10231859

    申请日：2002-08-30

    申请人： Edmond Chu ,  Tim Quinn ,  Larry Murdock ,  Hung Tran

    发明人： Edmond Chu ,  Tim Quinn ,  Larry Murdock ,  Hung Tran

    IPC分类号： A61M1600

    CPC分类号： A61M16/208 ,  A61M16/06 ,  A61M16/0683 ,  A61M16/209 ,  Y10T137/87555

    摘要： A valve for use in continuous positive airway pressure (CPAP) devices includes a valve body that is disposed at or between the patient mask and the source of positive airway pressure. The valve body includes first and second exhaust paths for exhausting gas from the mask. A floating valve seat is disposed in the valve body and is moveable between first and second positions. A moveable spring-biased piston is releasably engaged with the floating valve seat. When the floating valve seat is in the first position, the moveable spring-biased piston is disengaged from the valve seat and gas travels out the first exhaust flowpath. When the floating valve seat is in the second position, the moveable spring-biased piston is engaged with the valve seat and gas travels out the second exhaust flowpath. The valve provides substantially constant positive airway pressure to the patient at pressures above the threshold pressure level of the valve. When the pressure drops below the threshold value, the valve opens a secondary flowpath in the valve.