作者: Darold Wobschall , William J. Rotariu
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摘要: A flow control device for supplying oxygen to a medical patient using provides pulses of only when the inhales, valve unit that receives pressurized supply and delivers controlled output through cannula patient. pressure sensor detects breathing changes signals are amplified automatically corrected signal errors, such as those caused by offset voltage temperature drift, use negative integral feedback module includes automatic correction circuits switch selectively disconnecting feedback. The generates signals, including an pulse delivered valve, having width is user adjustable opening closing three-way solenoid outputting time selectable inhalation detected sensor.