Patent ID: 11865260
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A patient interface assembly configured to deliver respiratory therapy to a patient's airways, the patient interface assembly comprising:
an elastomeric piece configured to receive a flow of pressurized respiratory gas and sealingly engage the patient's face, the elastomeric piece forming a plenum and comprising:
a mouth sealing portion configured to form a seal around the patient's mouth and comprising a mouth opening configured to be aligned with the patient's mouth in use;
a nasal sealing portion configured to form a seal with an underside of the patient's nose and comprising a nasal opening configured to be aligned with one of the patient's nares in use, at least a portion of the nasal sealing portion being located superior to the mouth sealing portion; and
an anterior surface with an air inlet opening configured to be coupled to a connector and/or an air delivery tube, the plenum being bound by the anterior surface, the mouth sealing portion, and the nasal sealing portion, the plenum being configured to receive the pressurized gas through the air inlet opening and discharge the pressurized gas through the mouth opening and the nasal opening;

a stiffening structure that is attached to the anterior surface of the elastomeric piece, the stiffening structure comprising a central aperture that is sized so that the air inlet opening and a portion of the anterior surface surrounding the air inlet opening remain exposed through the central aperture, the stiffening structure being configured so that the entirety of the stiffening structure is inferior to the patient's nose in use; and
a positioning and stabilizing structure configured to be connected to the stiffening structure and support the elastomeric piece and the stiffening structure on the patient's head.