Patent ID: 7559326
Filing Date: 2009-07-14
Classification: A61M

Abstract:
1. An oxygen diverter valve adapted to, in use, be disposed between a flow generator and an oxygen injection point, comprising: a housing with an air inlet cavity, an oxygen injection cavity and a membrane type valve separating both cavities, wherein the oxygen injection cavity has at least one vent to provide fluid communication to the atmosphere, the membrane type valve includes a mounting part, a flexing part and a sealing part, wherein in the open position of the flexing part, the air inlet cavity is in fluid communication with the oxygen injection cavity allowing passage of gas, the sealing part is in the second sealing position, and the at least one vent in the oxygen injection cavity is closed off to the atmosphere, the membrane valve is pressure operated, and when the difference in gas pressure between the air inlet cavity and atmosphere is substantially equal to or below the operating threshold, the valve is closed, and the valve is open when the pressure in the air inlet cavity is above the predetermined operating pressure.