Respiratory mask

A patient interface configured to deliver pressurized breathable gas to a patient's airways, the patient interface comprising:

• a flexible cushion with a rear aperture configured to receive the patient's nose, a tube connection portion of the flexible cushion having a lateral opening configured to connect to an air delivery tube;
• a plenum chamber formed by the flexible cushion;
• a gas washout vent on a front wall of the flexible cushion that is opposite the rear aperture;
• a support structure attached to the flexible cushion on a lateral side of the flexible cushion at the tube connection portion, the support structure being more rigid than the tube connection portion of the flexible cushion at the lateral opening and being fluidly isolated from the interior of the plenum chamber and from the gas washout vent, the tube connection portion being movable relative to the support structure;
• and
• a pair of headgear connectors on the support structure.

A patient interface configured to deliver pressurized breathable gas to a patient's airways, the patient interface comprising:

• a flexible cushion forming at least a portion of a plenum chamber and configured to sealingly engage a portion of the patient's face including a portion of the patient's nose and/or a portion adjacent the patient's nose;
• a support structure that is more rigid than the flexible cushion and is attached to the flexible cushion;
• and
• at least one receptacle on a lateral side of the flexible cushion, each of the at least one receptacle being in direct communication with an interior of the plenum chamber and having a lateral opening configured to receive an air delivery tube,
• wherein the at least one receptacle is more flexible than the support structure at lateral opening and is arranged to decouple movement of the air delivery tube from the flexible cushion, and
• wherein the flexible cushion is secured to the support structure on a lateral side of the support structure at the at least one receptacle.