发明名称 |
PRESSURE SENSOR CONTROL DEVICE FOR SUPPLYING OXYGEN. |
摘要 |
A flow control device for supplying oxygen to a medical patient using provides pulses of oxygen only when the patient inhales, using a flow valve unit that receives a pressurized oxygen supply and delivers a controlled oxygen supply output through a cannula to a patient. A pressure sensor detects breathing changes and output signals that are amplified and automatically corrected for signal errors, such as those caused by offset voltage and temperature drift, by use of a negative integral feedback module that includes automatic correction circuits and a switch for selectively disconnecting the feedback. The amplified sensor signal generates control signals, including an output pulse delivered to the flow valve, having a pulse width that is a user adjustable for control of the opening and closing of a valve, such as a three-way solenoid valve, for outputting time selectable pulses of oxygen to the patient when patient inhalation is detected by the pressure sensor. |
申请公布号 |
EP0574377(A4) |
申请公布日期 |
1992.08.03 |
申请号 |
EP19900902965 |
申请日期 |
1990.02.01 |
申请人 |
ROTARIU, WILLIAM J.;WOBSCHALL, DAROLD |
发明人 |
ROTARIU, WILLIAM J.;WOBSCHALL, DAROLD |
分类号 |
A61M16/00;A61M16/06;G05D16/20;(IPC1-7):A61M16/00 |
主分类号 |
A61M16/00 |
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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