| CPC A61M 16/0622 (2014.02) [A61M 16/06 (2013.01); A61M 16/0683 (2013.01); A61B 5/0826 (2013.01); A61M 2202/0225 (2013.01); A61M 2205/02 (2013.01); A61M 2210/0618 (2013.01); A61M 2210/0625 (2013.01)] | 18 Claims |
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1. A patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least entrance of the patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing;
said patient interface comprising:
a frame comprising a textile material;
a seal-forming structure provided to the frame,
wherein the seal-forming structure includes a nasal cushion configured and arranged to form a seal around a lower portion of the patient's nose below the patient's nasal bridge,
wherein the nasal cushion comprises a foam material and a textile material, a surface of the textile material of the nasal cushion comprising a seal-forming surface configured and arranged to sealingly engage to contact the patient's face to form the seal against the patient's face around said lower portion of the patient's nose,
wherein the seal-forming structure further includes a mouth cushion configured and arranged to form a seal around at least a portion of the patient's mouth at least along the sides of the mouth and along the lower lip/chin region, and
wherein the mouth cushion comprises a foam material, a surface of the foam material of the mouth cushion comprising a seal-forming surface configured and arranged to sealingly engage to contact the patient's face to form the seal against the patient's face around said portion of the patient's mouth; and
a positioning and stabilising structure configured to hold the seal-forming structure in sealing position in use, at least a portion of the positioning and stabilising structure including a textile material,
wherein the textile material of the positioning and stabilising structure is integrated with the seal-forming structure and/or the frame textile material of the nasal cushion and the textile material of the frame,
wherein the nasal cushion includes a bridge portion configured and arranged to extend across an upper portion of the mouth cushion,
wherein the bridge portion is configured such that the bridge portion does not form a seal with the patient's face, in use,
wherein the positioning and stabilising structure includes upper side straps each configured to attach to an upper portion of the frame and lower side straps each configured to attach to a lower portion of the frame,
wherein each of the upper side straps is attached to an anterior side of the upper portion which allows a posterior side of the upper portion where the foam material of the nasal cushion is attached to splay out and conform to the patient's face shape, and
wherein each of the lower side straps is attached to a posterior side of the lower portion where the foam material of the mouth cushion is attached to directly apply force onto the foam material of the mouth cushion.
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