发明名称 |
Flow detector |
摘要 |
A liquid flowed detection system is disclosed for monitoring continuous and discontinuous liquid flow in a fluid circuit. The system includes a holding device for maintaining a drip chamber so that its elongated axis generally lies in a vertical plane. A light emitter is oriented to transmit light along an optical path through the drip chamber and intersecting its elongated axis. A light detector located in the optical path opposite the light emitter, generates a signal representative of light received from the light emitter. A processor receives information from the detector and generates a control signal representative of a variability over time of the light detector signal. When the control signal drops below a predetermined level, a flow absence signal is generated which is then correlated to the system's pump velocity corresponding to a time interval (T). If the flow absence signal occurs continuously in a comparison time interval (T), a warning signal is generated.
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申请公布号 |
US5621392(A) |
申请公布日期 |
1997.04.15 |
申请号 |
US19950546733 |
申请日期 |
1995.10.23 |
申请人 |
HOSPAL LTD. |
发明人 |
PAOLINI, FRANCESCO;PARALUPPI, MARCO;VINCI, LUCA |
分类号 |
A61M5/168;G01F1/66;G01F1/708;G01F3/00;G01P5/18;(IPC1-7):G08B21/00 |
主分类号 |
A61M5/168 |
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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