Cushion for patient interface
First Claim
Patent Images
1. A mask assembly for delivering breathable gas to a patient, the assembly comprising:
- a frame; and
a full-face cushion connected to the frame and including a nasal bridge region, a pair of cheek regions and a chin region, the cushion defining, at least in part, a breathing cavity, the cushion comprising;
a membrane including a nasal bridge region, a pair of cheek regions and a chin region forming a continuous sealing structure to form a continuous seal on nasal bridge, cheek, and chin regions of the patient'"'"'s face, the membrane having an inner edge that defines a triangular-shaped aperture adapted to receive the patient'"'"'s nose and mouth; and
a support structure to support the membrane, the support structure including;
a wall having a top portion and a bottom portion; and
a pair of underlying cushions joined in the nasal bridge region of the cushion and extending along the top portion of the wall to provide support to the membrane in the nasal bridge region and the pair of cheek regions of the cushion,wherein the membrane extends from the support structure and terminates at the inner edge of the membrane,wherein the pair of underlying cushions extends in the nasal bridge region and the pair of cheek regions of the cushion such that the membrane and the pair of underlying cushions form at least a double-walled construction in the nasal bridge region and the pair of cheek regions of the cushion,wherein;
each underlying cushion extends, in a cross-sectional view, away from the wall and includes an inwardly curved portion that extends into and curves inwardly toward the breathing cavity in a spaced-relationship with respect to the membrane,the membrane, from front view, covers each inwardly curved portion of the pair of underlying cushions,each inwardly curved portion of the pair of underlying cushions terminates at a respective free end, the free ends of the pair of underlying cushions being disposed within the breathing cavity,each said inwardly curved portion of the pair of underlying cushions extends along the nasal bridge region and the pair of cheek regions of the cushion and terminates proximate a transition between the chin region and a respective cheek region of the cushion to form an underlying cushion cutaway profile in the chin region of the cushion, andeach inwardly curved portion of the pair of underlying cushions is absent in the underlying cushion cutaway profile,wherein a first portion of the support structure extends laterally beyond a second exterior portion of the cushion, andwherein;
the first portion of the support structure is movable with respect to the second exterior portion of the cushion when the cushion is worn and a force by the frame is exerted on the cushion,the first portion of the support structure is movable from an initial position towards a space exterior of the cushion when the frame force is exerted on the cushion, andthe first portion of the support structure is configured to resiliently move back into the initial position when the frame force is no longer exerted on the cushion.
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0 Petitions
Accused Products
Abstract
A cushion for a patient interface that delivers breathable gas to a patient includes a base wall structured to be connected to a frame, an underlying support cushion extending away from the base wall towards the patient'"'"'s face in use, and a membrane provided to substantially cover at least a portion of the underlying cushion. The membrane is adapted to form a continuous seal on the patient'"'"'s face. The underlying cushion has a spring-like connection with the base wall. The underlying cushion and/or base wall define a spring constant that varies along a length of the seal.
610 Citations
30 Claims
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1. A mask assembly for delivering breathable gas to a patient, the assembly comprising:
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a frame; and a full-face cushion connected to the frame and including a nasal bridge region, a pair of cheek regions and a chin region, the cushion defining, at least in part, a breathing cavity, the cushion comprising; a membrane including a nasal bridge region, a pair of cheek regions and a chin region forming a continuous sealing structure to form a continuous seal on nasal bridge, cheek, and chin regions of the patient'"'"'s face, the membrane having an inner edge that defines a triangular-shaped aperture adapted to receive the patient'"'"'s nose and mouth; and a support structure to support the membrane, the support structure including; a wall having a top portion and a bottom portion; and a pair of underlying cushions joined in the nasal bridge region of the cushion and extending along the top portion of the wall to provide support to the membrane in the nasal bridge region and the pair of cheek regions of the cushion, wherein the membrane extends from the support structure and terminates at the inner edge of the membrane, wherein the pair of underlying cushions extends in the nasal bridge region and the pair of cheek regions of the cushion such that the membrane and the pair of underlying cushions form at least a double-walled construction in the nasal bridge region and the pair of cheek regions of the cushion, wherein; each underlying cushion extends, in a cross-sectional view, away from the wall and includes an inwardly curved portion that extends into and curves inwardly toward the breathing cavity in a spaced-relationship with respect to the membrane, the membrane, from front view, covers each inwardly curved portion of the pair of underlying cushions, each inwardly curved portion of the pair of underlying cushions terminates at a respective free end, the free ends of the pair of underlying cushions being disposed within the breathing cavity, each said inwardly curved portion of the pair of underlying cushions extends along the nasal bridge region and the pair of cheek regions of the cushion and terminates proximate a transition between the chin region and a respective cheek region of the cushion to form an underlying cushion cutaway profile in the chin region of the cushion, and each inwardly curved portion of the pair of underlying cushions is absent in the underlying cushion cutaway profile, wherein a first portion of the support structure extends laterally beyond a second exterior portion of the cushion, and wherein; the first portion of the support structure is movable with respect to the second exterior portion of the cushion when the cushion is worn and a force by the frame is exerted on the cushion, the first portion of the support structure is movable from an initial position towards a space exterior of the cushion when the frame force is exerted on the cushion, and the first portion of the support structure is configured to resiliently move back into the initial position when the frame force is no longer exerted on the cushion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mask assembly for delivering breathable gas to a patient, the assembly comprising:
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a frame; and a full-face cushion connected to the frame and including a nasal bridge region, a pair of cheek regions and a chin region, the cushion defining, at least in part, a breathing cavity, the cushion comprising; a membrane including a nasal bridge region, a pair of cheek regions and a chin region forming a continuous sealing structure to form a continuous seal on nasal bridge, cheek, and chin regions of the patient'"'"'s face, the membrane having an inner edge that defines a triangular-shaped aperture adapted to receive the patient'"'"'s nose and mouth; and a support structure to support the membrane, the support structure including; a wall; and an underlying cushion connected to the wall and including a nasal bridge region, a left cheek region and a right cheek region to provide support for the membrane, wherein the membrane extends from the support structure and terminates at the inner edge of the membrane, wherein the underlying cushion extends adjacent a perimeter of the triangular-shaped aperture in the pair of cheek regions of the cushion such that the cushion has at least a double-walled construction in at least the pair of cheek regions, wherein; the underlying cushion extends, in cross section, away from the wall and includes an inwardly curved portion that extends into and curves toward the breathing cavity in a spaced-relationship with respect to the membrane, the membrane, from front view, covers the inwardly curved portion of the underlying cushion, the inwardly curved portion of the underlying cushion terminates at a free end of the underlying cushion, the free end of the underlying cushion being disposed within the breathing cavity, the inwardly curved portion of the underlying cushion extends along the nasal bridge region, the left cheek region and the right cheek region of the underlying cushion and terminates proximate a transition between the chin region and a respective cheek region of the cushion to form an underlying cushion cutaway profile in the chin region of the cushion, and the inwardly curved portion of the underlying cushion is absent in the underlying cushion cutaway profile, wherein a first portion of the support structure extends laterally beyond a second exterior portion of the cushion, and wherein; the first portion of the support structure is movable with respect to the second exterior portion of the cushion when the cushion is worn and a force by the frame is exerted on the cushion, the first portion of the support structure is movable from an initial position towards a space exterior of the cushion when the frame force is exerted on the cushion, and the first portion of the support structure is configured to resiliently move back into the initial position when the frame force is no longer exerted on the cushion. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification