Patent ID: 8528562
Filing Date: 2013-09-10
Classification: A61M

Abstract:
1. An oxygen diverter valve adapted to 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 valve separating both cavities, wherein the oxygen injection cavity has at least one vent to provide fluid communication to the atmosphere, the membrane valve includes a mounting part, a flexing part and a sealing part, wherein the mounting part is adapted for mounting the valve to the housing, the flexing part is adapted to flex between a biased closed position and an open position, and the sealing part is adapted to create a seal in both closed and open position, wherein, in closed position the opening between the air inlet cavity and the oxygen injection cavity is closed and the at least one vent in the oxygen injection cavity is open to let the gas in the oxygen injection cavity vent to atmosphere, in open position the air inlet cavity connects to the oxygen injection cavity allowing passage of gas and the at least one vent in the oxygen injection cavity is closed off to 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.