发明名称 |
Negative pressure drainage vessel |
摘要 |
A negative pressure drainage vessel equipped with an interior resilient flexible diaphragm and means for producing a negative pressure on that side of such diaphragm which is proximate a fluid recovery area. The opposite side of the diaphragm is exposed to atmospheric pressure. A progressive rise of fluid level in the container, as may tend to increase the pressure on the negative-pressure side of the diaphragm, is accompanied by an elastomeric contraction "pull-down" or "pull-up" of the diaphragm so as to maintain essentially the negative pressure required for an essentially constant suction condition for a large progressive rise in fluid level. The negative pressure may be increased by periodic application of vacuum as may be effected by an air-evacuation mechanism. A separate, liquid-filled bag may be employed together with an appropriate valving means.
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申请公布号 |
US4073294(A) |
申请公布日期 |
1978.02.14 |
申请号 |
US19750598369 |
申请日期 |
1975.07.23 |
申请人 |
MEDICAL DEVELOPMENT CORPORATION |
发明人 |
STANLEY, JAMES ROBERT;TOPHAM, SILAS CHARLES |
分类号 |
A61M1/00;(IPC1-7):A61M1/00 |
主分类号 |
A61M1/00 |
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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