Patent ID: 11931512
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. A patient interface comprising:
a plenum chamber pressurisable to a therapeutic pressure of at least 6 cmH2O above ambient air pressure, the plenum chamber including an oral portion and a nasal portion, said plenum chamber further including a plenum chamber inlet port sized and structured to receive a flow of air at the therapeutic pressure for breathing by a patient;
a first seal-forming structure in the oral portion of the plenum chamber and being connected to an oral portion of the plenum chamber, the first seal-forming structure constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's mouth such that the flow of air at said therapeutic pressure is delivered to the mouth, the first seal-forming structure constructed and arranged to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use;
a second seal-forming structure in the nasal portion of the plenum chamber and being connected to a nasal portion of the plenum chamber, the second seal-forming structure constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's nose such that the flow of air at said therapeutic pressure is delivered to the nose, the second seal-forming structure constructed and arranged to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use; and
a vent structure to allow a continuous flow of gases exhaled by the patient from an interior of the plenum chamber to vent to ambient, said vent structure being sized and shaped to maintain the therapeutic pressure in the plenum chamber in use;
the plenum chamber comprising silicone and having an anterior wall formed of the silicone, the plenum chamber inlet port being an opening formed in the silicone of the anterior wall, the opening being adapted to directly receive a fluid connector;
wherein:
posterior surfaces of lateral portions of the second seal forming structure slope in a superior-anterior direction from a boundary of the first and second seal forming structures;
the patent interface is configured such that no part contacts the patient's alar crest point, in use, and
the patient interface includes a pair of support portions disposed within the plenum chamber and provided on opposite sides of the interface, the pair of support portions contact and extend from the second seal forming structure and to the anterior wall of the plenum chamber, wherein the pair of support portions are configured to oppose compression only in an anterior-posterior direction.