초록 ▼

A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a high

A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a higher resistance vent provided in case the main vent is blocked. The outlet vent is removable for easy maintenance and provides indication to the user when maintenance is required. The outlet vent described may be used on nasal masks, mouthpieces and patient interfaces generally.

대표청구항 ▼

A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a high

A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a higher resistance vent provided in case the main vent is blocked. The outlet vent is removable for easy maintenance and provides indication to the user when maintenance is required. The outlet vent described may be used on nasal masks, mouthpieces and patient interfaces generally. calculated as a function of the ratio Qa/Qa° between said flow rate of air Qa and said flow rate of air Qa°. 7. A method according to claim 5, wherein said percentage (p) is calculated in accordance with the expression: in which γa represents a specific weight of the air and γv represents a specific weight of the fuel vapour. 8. A method according to claim 5, wherein said flow rate of air Qa° is calculated by way of the expression: in which ΔP represents a vacuum present in the intake manifold (12) connected to said accumulator (3), γa represents a specific weight of the air, A represents a passage section of a cut-off valve (14) interposed between said accumulator (3) and said manifold (12) and K takes into account a duty cycle with which said cut-off valve (14) is controlled, the latter being adapted to throttle the flow of air and fuel vapour fed towards said intake manifold (12).