公开(公告)号：US3932066A

公开(公告)日：1976-01-13

申请号：US402679

申请日：1973-10-02

申请人： Theodore B. Eyrick ,  Allen C. Brown

发明人： Theodore B. Eyrick ,  Allen C. Brown

IPC分类号： A61M16/00 ,  F04B9/00 ,  F04B17/00 ,  F04B43/06 ,  F04B45/02

CPC分类号： A61M16/00 ,  A61M16/0072

摘要： A cylinder for delivering at limited positive pressure a preselected limited volume of breathing gas at a preselected limited flow rate. The cylinder includes a cylindrical housing which is substantially closed to the atmosphere. A drive weight is movably mounted within the cylinder, with a rolling diaphragm being connected between the wall of the cylinder and the weight to divide the cylinder into upper and lower chambers. A vacuum source is connected to the upper chamber to draw the weight and diaphragm upwardly, expanding and drawing breathing gas into the lower chamber. By controllably releasing the vacuum in the upper chamber, the weight is allowed to fall downwardly, solely under the force of gravity, to cause the lower chamber to contract. This creates a positive pressure in the lower chamber, forcing the breathing gas out of an outlet for delivery to a patient. The weight is slidably mounted on a hollow tube which extends axially through the housing, and a follower chain connected to the weight passes through the tube to an external indicator. The tube may be slotted to accomodate a connection between the follower and the weight to provide a positive indication of the exact location of the weight, and a bellows arrangement is provided to seal the upper and lower chambers from the area occupied by the tube.

摘要翻译： 用于在有限的正压力下以预选的有限流速输送预定的有限体积的呼吸气体的气缸。 圆柱体包括基本上与大气封闭的圆柱形壳体。 驱动重量可移动地安装在气缸内，其中滚动隔膜连接在气缸的壁和重物之间，以将气缸分成上下腔室。 真空源连接到上部腔室，向上拉动重物和隔膜，将呼吸气体扩张并吸入下腔室。 通过可控地释放上部腔室中的真空，仅在重力作用下使重量下降，导致下腔室收缩。 这在下腔室中产生正压力，迫使呼吸气体从出口输送到患者体内。 重量可滑动地安装在轴向延伸通过壳体的中空管上，并且连接到重物的从动链通过管到外部指示器。 管可以开槽以容纳从动件和重物之间的连接，以提供重量的确切位置的肯定指示，并且提供波纹管装置以将上部和下部腔室与管所占据的区域密封。