发明名称 |
Vacuum demand valve |
摘要 |
A vacuum demand valve for controlling flow of exhalation gases from a patient to a vacuum line. The demand valve comprises: a housing having a housing inlet that allows exhalation gases to flow into the housing from a patient, and a housing outlet that allows gases to flow from the housing into the vacuum line; a diaphragm having a flexible skirt and a rigid portion moveable in response to gas pressure in the housing; a sealing member connected to the rigid portion to engage the housing outlet to resist the flow of gases from the housing to the vacuum line. In a first condition, the vacuum line pressure causes the sealing member to engage the housing outlet and in a second condition a predetermined pressure of exhalation gases in the housing causes the sealing member to disengage from the housing outlet.
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申请公布号 |
US8517021(B2) |
申请公布日期 |
2013.08.27 |
申请号 |
US20100893062 |
申请日期 |
2010.09.29 |
申请人 |
TATAREK ANDREW RICHARD THOMAS;WEISZL GUNTHER;LINDE AKTIENGESELLSCHAFT |
发明人 |
TATAREK ANDREW RICHARD THOMAS;WEISZL GUNTHER |
分类号 |
A62B9/00;A61M16/20;F16K31/126 |
主分类号 |
A62B9/00 |
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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