公开(公告)号：EP2303181A4

公开(公告)日：2014-05-07

申请号：EP09771050

申请日：2009-06-25

申请人： RJC PRODUCTS LLC

发明人： BUSHMAN RICHARD PAUL ,  SCHUELLER JERRY

IPC分类号： A61C17/06 ,  A61C17/12

CPC分类号： A61C17/043 ,  A61C1/16 ,  A61C17/04 ,  F16K15/144 ,  Y10T137/3149 ,  Y10T137/3294 ,  Y10T137/7879 ,  Y10T137/7888 ,  Y10T137/7891

摘要： A backflow-prevention system that substantially prevents contaminant backflow at a treatment site. The system includes a fluid ejector tube for insertion into the patient's mouth and a backflow prevention device that receives fluid from the fluid ejector tube. The backflow prevention device includes an internally positioned valve member. The valve member limits contaminant backflow. The valve member is movable between open and closed positions based on a vacuum pressure condition in the system.

摘要翻译： 一种基本上防止在处理部位的污染物回流的防回流系统。 该系统包括用于插入患者口腔的流体喷射器管和从流体喷射管接收流体的防回流装置。 防回流装置包括内部定位的阀构件。 阀构件限制污染物回流。 阀构件可基于系统中的真空压力条件在打开位置和关闭位置之间移动。