Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame having a front surface and a rear surface adapted in use to face the patient. An elbow assembly is swivelably coupled to the front surface of the frame, the elbow assembly including one or more vent openings. A removable vent cover is detachably connected to the elbow assembly such that the vent cover is positioned in covering relation with respect to the one or more vent openings. The vent cover includes a main body and at least one vent aperture for gas washout. The vent cover includes a ring-shaped base defining an aperture into which a portion of the elbow assembly is inserted.

Abstract: A mask (10) for use with a system for supplying breathable gas pressurised above atmospheric pressure to a human or animal's airways. The mask (10) includes a mask shell (12) which is, in use, in fluid communication with a gas supply conduit (30), and a gas washout vent assembly (20). At least the region of the mask shell (12) or conduit (30) surrounding or adjacent the vent assembly is formed from a relatively flexible elastomeric material.

Abstract: A mask (10) for use with a system for supplying breathable gas pressurised above atmospheric pressure to a human or animal's airways. The mask (10) includes a mask shell (12) which is, in use, in fluid communication with a gas supply conduit and a gas washout vent assembly (20). The gas washout vent assembly (20) includes at least one gas washout orifice (22) extending from a first side of the vent assembly (20) positioned, in use, adjacent the human or animal's face and a second side positioned, in use, adjacent the atmosphere. The cross-sectional area of the orifice (22) at the first side is larger than the cross-sectional area of the orifice (22) at the second side.

Abstract: A mask (10) for use with a system for supplying breathable gas pressurised above atmospheric pressure to a human or animal's airways. The mask (10) includes a mask shell (12) which is, in use, in fluid communication with a gas supply conduit (30), and a gas washout vent assembly (20). At least the region of the mask shell (12) or conduit (30) surrounding or adjacent the vent assembly is formed from a relatively flexible elastomeric material.

Abstract: A mask (10) for use with a system for supplying breathable gas pressurised above atmospheric pressure to a human or animal's airways. The mask (10) includes a mask shell (12) which is, in use, in fluid communication with a gas supply conduit and a gas washout vent assembly (20). The gas washout vent assembly (20) includes at least one gas washout orifice (22) extending from a first side of the vent assembly (20) positioned, in use, adjacent the human or animal's face and a second side positioned, in use, adjacent the atmosphere. The cross-sectional area of the orifice (22) at the first side is larger than the cross-sectional area of the orifice (22) at the second side.

Abstract: A forehead support is adapted to be secured to a respiratory mask. The forehead support includes a joining member for securing to the mask and a cushion frame pivotally mounted to the joining member. The cushion frame is adapted to located one or more forehead cushions. The cushion frame is also selectively lockable at two or more predetermined angular positions relative to the joining member.

Abstract: A forehead support (10) is disclosed that is adapted to be secured to a respiratory mask (16). The forehead support (10) including a joining member (14) for securing to the mask (16) and a cushion frame (12) pivotally mounted to the joining member (14). The cushion frame (12) is adapted to locate one or more forehead cushions (25). The cushion frame (12) is also adapted to pivot relative to the joining member (14). The cushion frame (12) is also selectively lockable at two or more predetermined angular positions relative to the joining member (14).

Abstract: A patient gas delivery apparatus includes a gas flow generator, a gas delivery conduit and a patient mask. Connected in series between the conduit and the mask is an assembly formed in at least two interengaging parts that may form a housing for an anti-asphyxia valve or flow sensor. The assembly further includes a mating portion for connection to the mask, the arrangement being such that connection of the assembly to the mask prevents disengagement of the interengaging connection between the two parts of the assembly.

Abstract: Patient gas deliver apparatus includes a gas flow generator, a gas delivery conduit and a patient mask (10). Connected in series between the conduit and the mask is an assembly (20) formed in at least two interengaging parts (26, 28), which may form a housing for an anti-asphyxia valve or flow sensor. The assembly further includes a mating portion (22) for connection to the mask, the arrangement being such that connection of the assembly (20) to the mask (10) prevents disengagement of the interengaging connection (42, 44) between the two parts of the assembly.

Abstract: Patient gas delivery apparatus includes a gas flow generator, a gas delivery conduit and a patient mask (10). Connected in series between the conduit and the mask is an assembly (20) formed in at least two interengaging parts (26, 28), which may form a housing for an anti-asphyxia valve or flow sensor. The assembly further includes a mating portion (22) for connection to the mask, the arrangement being such that connection of the assembly (20) to the mask (10) prevents disengagement of the interengaging connection (42, 44) between the two parts of the assembly.

Abstract: A respiratory mask assembly includes a rigid mask frame (160) with rim portion comprising a rearwardly projecting tongue (620) and lateral flange (640) and a cushion (180) having a rim with a corresponding groove (740) and a rearwardly facing shoulder (720). A clip in the form of a collar (800) passes over the cushion, engaging behind the shoulder (720), and has securing tabs (820) which engage recesses (660) in the flange (640).

Abstract: A connector arrangement joining a respiratory mask and headgear is adapted for single-handed disengagement by the patient. A first, rigid connector part 470 is formed into the rigid mask frame 400, with a mating second connector 600 attached to a strap of the headgear. The connectors are held away from the patient's face by the connection to the mask frame.

Abstract: A respiratory mask assembly includes a rigid mask frame (160) with a rim portion comprising a rearwardly projecting tongue (620) and lateral flange (640) and a cushion (180) having a rim with a corresponding groove (740) and a rearwardly facing shoulder (720). A clip in the form of a collar (800) passes over the cushion, engaging behind the shoulder (720), and has securing tabs (820) which engage recesses (660) in the flange (640).

Abstract: A connector arrangement joining a respirator mask and headgear is adapted for single-handed disengagement by the patient, A first, rigid connector part 470 is formed into the rigid mask frame 400, with a mating second connector 600 attached to a strap of the headgear. The connectors are held away from the patient's face by the connection to the mask frame.

Abstract: The present invention discloses an adjustable forehead support for a nasal or full-face mask wherein the forehead support may be adjusted for the different shapes and sizes of a facial profile. The forehead support utilizes a dual-arm system that adjusts the position of the forehead support vis-á-vis the mask and/or airflow tube. The angle of the mask to the face may be adjusted with the present invention.

Abstract: Patient gas delivery apparatus includes a gas flow generator, a gas delivery conduit and a patient mask (10). Connected in series between the conduit and the mask is an assembly (20) formed in at least two interengaging parts (26,28), which may form a housing for an anti-asphyxia valve or flow sensor. The assembly further includes a mating portion (22) for connection to the mask, the arrangement being such that connection of the assembly (20) to the mask (10) prevents disengagement of the interengaging connection (42,44) between the two parts of the assembly.

Abstract: Patient gas delivery apparatus includes a gas flow generator, a gas delivery conduit and a patient mask (10). Connected in series between the conduit and the mask is an assembly (20) formed in at least two interengaging parts (26, 28), which may form a housing for an anti-asphyxia valve or flow sensor. The assembly further includes a mating portion (22) for connection to the mask, the arrangement being such that connection of the assembly (20) to the mask (10) prevents disengagement of the interengaging connection (42, 44) between the two parts of the assembly.