SOLENOID CONTROLLED RESPIRATORY GAS DEMAND VALVE

    公开(公告)号:EP3406290A1

    公开(公告)日:2018-11-28

    申请号:EP18173683.6

    申请日:2018-05-22

    IPC分类号: A61M16/20

    摘要: 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.