Respiratory apparatus
First Claim
1. A foam cushion assembly for a patient interface for providing a pressurised air to a user'"'"'s airway, the foam cushion assembly comprising:
- a foam cushion portion configured to, in use, seal around portion of the user'"'"'s nose; and
a flexible support portion extending along a periphery of the foam cushion portion so as to support the foam cushion portion,wherein the foam cushion portion has a trapezium cross sectional shape in at least a side of nose region and comprises;
(a) a sealing surface including at least a portion thereof at a first side of the trapezium cross sectional shape, the at least a portion of the sealing surface including a radially flat region for user facial contact at the first side, and (b) a fixing surface side of the trapezium cross sectional shape, the fixing surface side being opposite to the first side and comprising a planar surface for adhering to a surface of the flexible support portion,wherein the sealing surface has a three-dimensional surface contour arranged so that the radially flat region in at least a portion of the sealing surface'"'"'s periphery is inwardly inclined, with respect to a mid-contact plane of the patient interface, for embracing and conforming to a shape of the user'"'"'s face in use,wherein the sealing surface includes a portion for sealing above a pronasale portion of the user'"'"'s nose in use,wherein the radially flat region is in both of a side of mouth region and a side of nose region,wherein the three-dimensional surface contour is radially flat about the sealing surface'"'"'s periphery in both side of mouth regions, both side of nose regions and a bottom region,wherein the least a portion of the sealing surface includes a planar surface region, wherein the three-dimensional surface contour is arranged so that the planar surface region in the at least a portion of the sealing surface'"'"'s periphery is inwardly inclined, with respect to the mid-contact plane of the patient interface, for embracing and conforming to the shape of the user'"'"'s face in use, andwherein the foam cushion assembly is arranged to seal around a portion of the user'"'"'s mouth in use and wherein the three-dimensional surface contour comprises side of mouth planar regions.
2 Assignments
0 Petitions
Accused Products
Abstract
A mask apparatus for a respiratory treatment can permit delivery of breathable gas to a user. In one example, the mask may employ a frame and cushion to form a seal for both mouth and nose. The frame may be adapted for coupling with a respiratory treatment apparatus so as to permit communication of a pressurized gas from the respiratory treatment apparatus. The cushion, which may be foam, may have a substantially under the nose configuration or over the nose configuration. The mask may have a common plenum chamber for both nose and mouth. The cushion may further define a centrally open lip superior region. The cushion may be adapted to couple with the frame directly or to the frame in conjunction with a cushion support clip. Various features of the cushion may further promote sealing and comfort for the under the nose design.
99 Citations
36 Claims
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1. A foam cushion assembly for a patient interface for providing a pressurised air to a user'"'"'s airway, the foam cushion assembly comprising:
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a foam cushion portion configured to, in use, seal around portion of the user'"'"'s nose; and a flexible support portion extending along a periphery of the foam cushion portion so as to support the foam cushion portion, wherein the foam cushion portion has a trapezium cross sectional shape in at least a side of nose region and comprises; (a) a sealing surface including at least a portion thereof at a first side of the trapezium cross sectional shape, the at least a portion of the sealing surface including a radially flat region for user facial contact at the first side, and (b) a fixing surface side of the trapezium cross sectional shape, the fixing surface side being opposite to the first side and comprising a planar surface for adhering to a surface of the flexible support portion, wherein the sealing surface has a three-dimensional surface contour arranged so that the radially flat region in at least a portion of the sealing surface'"'"'s periphery is inwardly inclined, with respect to a mid-contact plane of the patient interface, for embracing and conforming to a shape of the user'"'"'s face in use, wherein the sealing surface includes a portion for sealing above a pronasale portion of the user'"'"'s nose in use, wherein the radially flat region is in both of a side of mouth region and a side of nose region, wherein the three-dimensional surface contour is radially flat about the sealing surface'"'"'s periphery in both side of mouth regions, both side of nose regions and a bottom region, wherein the least a portion of the sealing surface includes a planar surface region, wherein the three-dimensional surface contour is arranged so that the planar surface region in the at least a portion of the sealing surface'"'"'s periphery is inwardly inclined, with respect to the mid-contact plane of the patient interface, for embracing and conforming to the shape of the user'"'"'s face in use, and wherein the foam cushion assembly is arranged to seal around a portion of the user'"'"'s mouth in use and wherein the three-dimensional surface contour comprises side of mouth planar regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification