Patient interface with foam seal-forming structure
AssigneeResMed Pty Ltd
InventorsMatthew EVES, Lemmy NGA, Gerard Michael RUMMERY, Rupert Christian SCHEINER, Shannon DAY
Life of this patent
Estimating the term…
Abstract
A cushion assembly for a patient interface includes a foam cushion and an elastomeric support portion configured to support the foam cushion. The foam cushion is more compliant in a nasal bridge region than other regions of the cushion assembly, the nasal bridge region being a region configured to engage the patient's nasal bridge when the cushion assembly is mounted on the patient's face.
Claims20
A cushion assembly for 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 the patient's airways including at least entrance of a 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, the cushion assembly comprising:
- a foam cushion;
- and
- an elastomeric support portion configured to support the foam cushion,
- wherein the foam cushion is more compliant in a nasal bridge region than other regions of the cushion assembly, the nasal bridge region being a region configured to engage the patient's nasal bridge when the cushion assembly is mounted on the patient's face.
A cushion assembly for 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 the patient's airways including at least entrance of a 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, the cushion assembly comprising:
- a foam cushion;
- and
- an elastomeric support portion configured to support the foam cushion,
- wherein the elastomeric support portion provides varying levels of support to the foam cushion in different regions of the cushion assembly.
A cushion assembly for 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 the patient's airways including at least entrance of a 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, the cushion assembly comprising:
- a foam cushion;
- and
- an elastomeric support portion configured to support the foam cushion,
- wherein the cushion assembly is bisected by a sagittal plane having a line that is tangent to the foam cushion only at a superior tangent point and an inferior tangent point,
- wherein a depth of the support portion is greatest at a superior region that includes the superior tangent, and an elastomeric wall thickness of the elastomeric support portion is thinnest at the superior region.
Dependencies are inferred from the claim text.