公开(公告)号：US4180066A

公开(公告)日：1979-12-25

申请号：US844045

申请日：1977-10-20

申请人： Ralph A. Milliken ,  Terence D. Wall ,  Martin Boelens

发明人： Ralph A. Milliken ,  Terence D. Wall ,  Martin Boelens

IPC分类号： A61M16/00

CPC分类号： A61M16/009 ,  Y10S128/91 ,  Y10T137/7772 ,  Y10T137/7897 ,  Y10T137/86043

摘要： A safety interface for connection between an anesthesia patient circuit and a disposal system, and a combined positive and negative pressure relief valve for the safety interface.The safety interface comprises a housing defining a passageway, means for connecting an upstream end of the passageway to the waste anesthetic gas outlet of an anesthesia patient circuit, means for connecting the downstream end of the passageway to a disposal system, a negative pressure relief valve and a positive pressure relief valve in communication with the passageway. The positive pressure release valve and negative pressure release valve are preferably provided in the form of a combined positive and negative pressure release valve, and a second negative pressure release valve is preferably also provided. Preferably, a restrictor partially obstructs the passageway at a point on its upstream to downstream extent, and the positive pressure relief valve communicates with the passageway at a point downstream of the restrictor. Means for connecting a reservoir in communication with the passageway upstream of the restrictor are preferably provided.The double acting pressure relief valve comprises a spindle, a first disc mounted on the spindle, a spindle receptacle for supporting said spindle, a coil spring seated in said spindle receptacle and surrounding said spindle, and a second disc having at least one aperture therein which may be closed by contact with said first disc, said second disc slidingly engaging said spindle and situated between said first disc and said spindle receptacle. The coil spring biases the second disc towards the housing so that the second disc may engage a raised ridge surrounding an opening in the housing.

摘要翻译： 用于麻醉病人回路和处置系统之间连接的安全接口，以及用于安全接口的组合式正负压泄压阀。 安全界面包括限定通道的壳体，用于将通道的上游端连接到麻醉患者回路的废麻醉气体出口的装置，用于将通道的下游端连接到处置系统的装置，负压释放阀 以及与通道连通的正压力释放阀。 正压释放阀和负压释放阀优选以组合的正压和负压释放阀的形式提供，并且优选地还提供第二负压释放阀。 优选地，限流器在其上游到下游范围的一点处部分地阻塞通道，并且正压力释放阀在限流器下游的点处与通道连通。 优选地提供用于连接与限流器上游的通道连通的容器。 所述双作用减压阀包括主轴，安装在所述主轴上的第一盘，用于支撑所述主轴的主轴容座，位于所述主轴容座中并围绕所述主轴的螺旋弹簧，以及在其中具有至少一个孔的第二盘 可以通过与所述第一盘接触来关闭，所述第二盘滑动地接合所述主轴并位于所述第一盘和所述主轴容座之间。 螺旋弹簧将第二盘朝向壳体偏置，使得第二盘可以接合围绕壳体中的开口的凸起的脊。