초록 ▼

A nasal positive airway pressure mask is provided having a variable orifice venting aperture member. The variable orifice venting aperture member preferably is mounted to the mask frame, but may be mounted at other locations. The variable orifice vent aperture member expands under increased pressure

A nasal positive airway pressure mask is provided having a variable orifice venting aperture member. The variable orifice venting aperture member preferably is mounted to the mask frame, but may be mounted at other locations. The variable orifice vent aperture member expands under increased pressure, e.g., during exhalation, and contracts to its original diameter at lower pressures, e.g., during inhalation, to provide variable venting capacity during positive airway pressure treatment.

대표청구항 ▼

A device for treatment of sleep apnea comprising: a source of pressurized air; a nasal mask in communication with the source of pressurized air, the nasal mask being configured and dimensioned to cover the nose of a patient in substantial sealing engagement with the patient\s face, and to deliver pr

A device for treatment of sleep apnea comprising: a source of pressurized air; a nasal mask in communication with the source of pressurized air, the nasal mask being configured and dimensioned to cover the nose of a patient in substantial sealing engagement with the patient\s face, and to deliver pressurized air from the source to the nose of a patient; at least one variable orifice member defining a variable orifice which assumes a first position having a first diameter at a first gas pressure and a second, expanded position having a second diameter greater than said first diameter at a second, increased gas pressure.