发明名称 |
Inhalation detection apparatus |
摘要 |
Apparatus for detecting and indicating the commencement of inhalation by a patient under test includes a housing through which a gas flow due to the inhalation is directed. A light source and a light receptor positioned adjacent to transparent portions of the housing define a light path between them which transversely intersects the gas flow, the receptor being adapted to provide an output signal in response to incident light from the source. A movably positioned vane mounted inside the housing and normally biased to a position substantially clear of the light path, moves to a position progressively blocking the light path upon commencement of gas flow due to inhalation. Means responsive to a change in the receptor output signal resulting from blockage of the light path provides indication of the flow due to the inhalation commencement.
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申请公布号 |
US4727886(A) |
申请公布日期 |
1988.03.01 |
申请号 |
US19870031191 |
申请日期 |
1987.03.27 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
CONRARDY, JOHN E.;FIORANI, BRUCE J.;PEDERSEN, ROBERT H.;STEINERT, MARK P. |
分类号 |
A61B5/08;(IPC1-7):A61B5/08 |
主分类号 |
A61B5/08 |
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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