公开(公告)号：US5927326A

公开(公告)日：1999-07-27

申请号：US892159

申请日：1997-07-14

申请人： Katsuhiro Hiejima ,  Yosuke Naoki

发明人： Katsuhiro Hiejima ,  Yosuke Naoki

IPC分类号： A61M39/00 ,  A61M5/14 ,  A61M5/168 ,  A61M1/14

CPC分类号： A61M5/141 ,  A61M5/16877 ,  Y10T137/87338 ,  Y10T137/87523

摘要： A multi-stage type flow rate switching device is provided which simplifies switching of flow paths and which rarely causes erroneous operation. The multi-stage type flow rate switching device includes a constant flow rate path 2 and a variable flow rate path 3 arranged in parallel between a liquid medicine flow inlet port 1 and a liquid medicine flow outlet port 4 where the variable flow rate path 3 can change the flow rate by means of a three-way stopcock 33. Although the flow rate can be switched in four stages when one variable flow rate path 3 is arranged as shown by FIG. 1, the flow rate can be switched in further multi-stages by providing two or more of the variable flow rate paths 3.

摘要翻译： 提供了一种多级式流量切换装置，其简化了流路的切换，很少引起误操作。 多级式流量切换装置包括在液体药物流入口1和液体药物流出口4之间并联配置的恒定流量路径2和可变流量路径3，其中可变流量路径3可以 通过三通旋塞阀33来改变流量。尽管当一个可变流速路径3如图3所示排列时，流量可以分四个阶段进行切换。 如图1所示，可以通过提供两个或更多个可变流量路径3来进一步多级切换流量。

公开(公告)号：US5839470A

公开(公告)日：1998-11-24

申请号：US832510

申请日：1997-04-03

申请人： Katsuhiro Hiejima ,  Yosuke Naoki

发明人： Katsuhiro Hiejima ,  Yosuke Naoki

IPC分类号： F16K5/04 ,  A61M5/168 ,  A61M39/00 ,  A61M39/22 ,  F16K11/085 ,  F16K37/00 ,  G05D7/00 ,  F16K11/08

CPC分类号： A61M39/223 ,  A61M5/16877 ,  Y10T137/86871 ,  Y10T137/87322

摘要： A three-way stopcock and a flow rate control device having a flow rate control unit for controlling the flow rate by flow resistances of flow rate control tubes. The three-way stopcock includes a plug portion in a cylindrical shape having a liquid path in a T-like shape, a cylindrical portion having two flow inlet ports and one flow outlet port, into which the plug portion can be inserted rotatably and in a liquid tight fit, and a switch lever capable of attachably and detachably engaging with the plug portion, wherein when the liquid path of the plug portion communicates with the flow outlet portion of the cylindrical portion by rotation of the plug portion by the switching lever, the liquid path of the plug portion communicates with at least one of the two flow inlet ports of the cylindrical portion.

摘要翻译： 三通旋塞阀和流量控制装置，具有流量控制单元，用于通过流量控制管的流量阻力来控制流量。 三通旋塞阀包括具有T型液体通道的圆柱形形状的塞子部分，具有两个流入口和一个流出口的圆柱形部分，该塞子部分可以可旋转地插入其中 液密配合，以及能够可插拔地与插塞部接合的开关杆，其中当插头部分的液体路径通过开关杆旋转插头部分而与圆柱形部分的流出口部分连通时， 插头部分的液体路径与圆柱形部分的两个流入口中的至少一个连通。