发明名称 |
Multi-stage type flow rate switching device |
摘要 |
<p>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 .</p> |
申请公布号 |
EP0819444(B1) |
申请公布日期 |
2001.09.19 |
申请号 |
EP19970112027 |
申请日期 |
1997.07.15 |
申请人 |
NIPRO CORPORATION |
发明人 |
HIEJIMA, KATSUHIRO;NAOKI, YOSUKE |
分类号 |
A61M39/00;A61M5/14;A61M5/168;(IPC1-7):A61M5/14 |
主分类号 |
A61M39/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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