SOLENOID CONTROLLED RESPIRATORY GAS DEMAND VALVE

A prior art demand valve has been modified to make it more responsive to persons with impaired oxygen delivery by replacing its sensing diaphragm and associated mechanically actuated valve actuator with a solenoid activated proportional control valve (56) coupled to an analog pressure transducer via...

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Bibliographische Detailangaben
Hauptverfasser:	Blanton, David A, Howard, Charles Peter
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	A prior art demand valve has been modified to make it more responsive to persons with impaired oxygen delivery by replacing its sensing diaphragm and associated mechanically actuated valve actuator with a solenoid activated proportional control valve (56) coupled to an analog pressure transducer via a pulse width modulated current driver circuit. The pressure transducer responds to detected pressure changes in a patient's breathing tube.