Gas delivery connection assembly

A patient gas delivery apparatus including:

• a mask having an aperture in communication with a patient's airway;
• a gas flow generator structured to supply pressurized gas;
• a gas delivery conduit having first and second opposing ends, the first opposing end being connected to the gas flow generator;
• a connecting assembly connected in series between the conduit and the mask, the connecting assembly including an elbow portion having a rotatable coupling at a distal end and a mating portion at a proximal end, the rotatable coupling being configured and positioned to connect to the second opposing end of the conduit and the mating portion being configured and positioned to be inserted through the aperture of the mask, the mating portion including a vent connector piece that defines at least one vent aperture and being detachably connected to the elbow portion;
• and
• an anti-asphyxia valve member positioned between the mating portion and the elbow portion,
• wherein the mask and the conduit are not adapted for direct interconnection without the connecting assembly.

A patient gas delivery apparatus including:

• a mask structured to communicate with a patient's airway;
• a gas flow generator structured to supply pressurized gas;
• a gas delivery conduit having first and second opposing ends, the first opposing end being connected to the gas flow generator;
• and
• a connecting assembly including an anti-asphyxia valve member and being connected in series between the conduit and the mask, the connecting assembly having a distal end and a proximal end, the distal end being configured and positioned to connect to the second opposing end of the condit and the proximal end including a mating portion configured and positioned to connect to the mask,
• wherein the valve member is supported within the proximal end adjacent to the mating portion such that the valve member and the mating portion are coaxial with one another, and
• wherein the mask and the conduit are not adapted for direct interconnection without the connecting assembly.

A patient gas delivery apparatus including:

• a mask structured to communicate with a patient's airway, the mask having a mask frame;
• a gas flow generator structured to supply pressurized gas;
• a gas delivery conduit having first and second opposing ends, the first opposing end being connected to the gas flow generator;
• and
• a connecting assembly including
• (i) an elbow having a first end that connects to the second opposing end of the conduit and a second end including a first engaging portion,
• (ii) a vent connector piece having a first end swivelably connected to the mask frame, the first end including a clip retaining portion, the vent connector piece having a second end including a second engaging portion, the second engaging portion adapted to engage with the first engaging portion of the elbow to provide releasable engagement of the vent conncetor piece and the elbow, and
• (iii) a valve adapted to be mounted within the vent connector piece, the valve being movable between a normally open position and a closed position upon application of pressure.