发明名称 |
Syringe pumping system with valves |
摘要 |
A pumping system with inlet and outlet check valves for delivering measured doses of liquid from a reservoir container, which might include sterile normal saline solution, to a series of smaller vials or hypodermic syringes. This pumping system has an improved valve system that includes a heavily biased check valve and a lightly biased check valve. An embodiment of the system has a valve body with an inlet passage surrounded by a valve seat, and an outlet valve member is biased against this valve seat by a pressure that is substantially greater than a pressure biasing an inlet check valve against its valve seat. A heavy bias at only one valve both (1) prevents valve leakage from the system due to a liquid pressure head from the reservoir container and (2) reduces operator fatigue.
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申请公布号 |
US4210173(A) |
申请公布日期 |
1980.07.01 |
申请号 |
US19780940060 |
申请日期 |
1978.09.06 |
申请人 |
AMERICAN HOSPITAL SUPPLY CORP |
发明人 |
CHOKSI, PRADIP V;JOHNSTON, DONALD L |
分类号 |
A61M5/142;A61M5/20;A61M5/31;F16K15/14;(IPC1-7):F16K15/14 |
主分类号 |
A61M5/142 |
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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