Cushion for patient interface
First Claim
1. A cushion for a patient interface that delivers breathable gas to a patient, the cushion 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 to form a continuous seal on the patient'"'"'s face, the membrane having an aperture adapted to receive the patient'"'"'s nose and mouth; and
a support structure to support the membrane, the support structure including an underlying cushion to provide support to the membrane, the underlying cushion including a nasal bridge region, a left cheek region and a right cheek region, the underlying cushion, in cross section, including an inwardly curved portion that curves inwardly toward the breathing cavity,wherein the membrane extends from the support structure and, from front view, covers the underlying cushion,wherein the underlying cushion and the membrane form at least a double-walled construction in the nasal bridge region and the pair of cheek regions of the cushion, andwherein;
the inwardly curved portion of the underlying cushion terminates at a free end of the underlying cushion,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, andthe inwardly curved portion of the underlying cushion 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, wherein the inwardly curved portion of the underlying cushion is absent in the underlying cushion cutaway profile.
2 Assignments
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.
609 Citations
30 Claims
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1. A cushion for a patient interface that delivers breathable gas to a patient, the cushion 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:
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a membrane including a nasal bridge region, a pair of cheek regions and a chin region to form a continuous seal on the patient'"'"'s face, the membrane having an aperture adapted to receive the patient'"'"'s nose and mouth; and a support structure to support the membrane, the support structure including an underlying cushion to provide support to the membrane, the underlying cushion including a nasal bridge region, a left cheek region and a right cheek region, the underlying cushion, in cross section, including an inwardly curved portion that curves inwardly toward the breathing cavity, wherein the membrane extends from the support structure and, from front view, covers the underlying cushion, wherein the underlying cushion and the membrane form at least a double-walled construction in the nasal bridge region and the pair of cheek regions of the cushion, and wherein; the inwardly curved portion of the underlying cushion terminates at a free end of the underlying cushion, 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 the inwardly curved portion of the underlying cushion 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, wherein the inwardly curved portion of the underlying cushion is absent in the underlying cushion cutaway profile. - 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)
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26. A cushion for a patient interface that delivers breathable gas to a patient, the cushion 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:
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a membrane including a nasal bridge region, a pair of cheek regions, and a chin region to form a continuous seal on the patient'"'"'s face, the membrane having an aperture adapted to receive the patient'"'"'s nose and mouth; and a support structure to support the membrane, the support structure including an underlying cushion to provide support to the membrane, the underlying cushion including a nasal bridge region, a left cheek region and a right cheek region, wherein the membrane extends from the support structure and, from front view, covers the underlying cushion, wherein the underlying cushion and the membrane form a double-walled construction in the nasal bridge region and the pair of cheek regions of the cushion such that the underlying cushion is positioned to restrain movement of the membrane, and wherein the cushion has only a single-walled construction formed by the membrane in a majority of the chin region of the cushion so as to allow the membrane to readily flex toward the breathing cavity in the chin region of the cushion. - View Dependent Claims (27)
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28. A cushion for a patient interface that delivers breathable gas to a patient, the cushion 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:
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a membrane including a nasal bridge region, a pair of cheek regions and a chin region to form a continuous seal on the patient'"'"'s face, the membrane having an aperture adapted to receive the patient'"'"'s nose and mouth; and a support structure to support the membrane, the support structure including an underlying cushion to provide support to the membrane, the underlying cushion including a nasal bridge region, a left cheek region and a right cheek region, wherein the membrane extends from the support structure and covers at least part of the underlying cushion, and wherein the underlying cushion is absent a majority of the chin region of the cushion such that a portion of the membrane is unrestrained by the underlying cushion in at least a portion of the chin region of the cushion, so as to allow the membrane to flex in the at least a portion of the chin region. - View Dependent Claims (29, 30)
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Specification