Cushion for patient interface
First Claim
1. A method of selecting a cushion from a series of full-face cushions to deliver breathable gas to a patient via a mask system for treatment of Obstructive Sleep Apnea with Non-Invasive Positive Pressure Ventilation, the method comprising:
- providing a series of full-face cushions, each of the full-face cushions including a nasal bridge region, cheek regions and a chin region, each of the full-face cushions defining, at least in part, a breathing cavity, the series comprising;
a first full-face cushion, the first full-face cushion comprising a first membrane including a first nasal bridge region, first cheek regions and a first chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the first membrane having an inner edge that defines a first triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the first triangular-shaped aperture including a lower portion having a first mouth width;
a second full-face cushion, the second full-face cushion comprising a second membrane including a second nasal bridge region, second cheek regions and a second chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the second membrane having an inner edge that defines a second triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the second triangular-shaped aperture including a lower portion having a second mouth width;
a third full-face cushion, the third full-face cushion comprising a third membrane including a third nasal bridge region, third cheek regions and a third chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the third membrane having an inner edge that defines a third triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the third triangular-shaped aperture including a lower portion having a third mouth width; and
a fourth full-face cushion, the fourth full-face cushion comprising a fourth membrane including a fourth nasal bridge region, fourth cheek regions and a fourth chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the fourth membrane having an inner edge that defines a fourth triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the fourth triangular-shaped aperture including a lower portion having a fourth mouth width,wherein, in a front view, each of the first, second, third and fourth triangular-shaped apertures has a different height, the first mouth width is within 5 mm of the second, third and fourth mouth widths, the second mouth width is within 5 mm of the third and fourth mouth widths, and the third mouth width is within 5 mm of the fourth mouth width,wherein the first full-face cushion is a large size full-face cushion, the second full-face cushion is a medium size full-face cushion, the third full-face cushion is a small size full-face cushion and the fourth full-face cushion is a size that is smaller than the third full-face cushion, andwherein the first full-face cushions is the largest full-face cushion in the series and the fourth full-face cushion is the smallest full-face cushion in the series, and the first mouth width is within 5 mm of the fourth mouth width, andselecting, for the treatment, a full-face cushion from the series of full-face cushions, in accordance with a size of the patient'"'"'s face.
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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 method of selecting a cushion from a series of full-face cushions to deliver breathable gas to a patient via a mask system for treatment of Obstructive Sleep Apnea with Non-Invasive Positive Pressure Ventilation, the method comprising:
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providing a series of full-face cushions, each of the full-face cushions including a nasal bridge region, cheek regions and a chin region, each of the full-face cushions defining, at least in part, a breathing cavity, the series comprising; a first full-face cushion, the first full-face cushion comprising a first membrane including a first nasal bridge region, first cheek regions and a first chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the first membrane having an inner edge that defines a first triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the first triangular-shaped aperture including a lower portion having a first mouth width; a second full-face cushion, the second full-face cushion comprising a second membrane including a second nasal bridge region, second cheek regions and a second chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the second membrane having an inner edge that defines a second triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the second triangular-shaped aperture including a lower portion having a second mouth width; a third full-face cushion, the third full-face cushion comprising a third membrane including a third nasal bridge region, third cheek regions and a third chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the third membrane having an inner edge that defines a third triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the third triangular-shaped aperture including a lower portion having a third mouth width; and a fourth full-face cushion, the fourth full-face cushion comprising a fourth membrane including a fourth nasal bridge region, fourth cheek regions and a fourth chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the fourth membrane having an inner edge that defines a fourth triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the fourth triangular-shaped aperture including a lower portion having a fourth mouth width, wherein, in a front view, each of the first, second, third and fourth triangular-shaped apertures has a different height, the first mouth width is within 5 mm of the second, third and fourth mouth widths, the second mouth width is within 5 mm of the third and fourth mouth widths, and the third mouth width is within 5 mm of the fourth mouth width, wherein the first full-face cushion is a large size full-face cushion, the second full-face cushion is a medium size full-face cushion, the third full-face cushion is a small size full-face cushion and the fourth full-face cushion is a size that is smaller than the third full-face cushion, and wherein the first full-face cushions is the largest full-face cushion in the series and the fourth full-face cushion is the smallest full-face cushion in the series, and the first mouth width is within 5 mm of the fourth mouth width, and selecting, for the treatment, a full-face cushion from the series of full-face cushions, in accordance with a size of the patient'"'"'s face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of selecting a cushion from a series of full-face cushions to deliver breathable gas to a patient via a mask system for treatment of Obstructive Sleep Apnea with Non-Invasive Positive Pressure Ventilation, the method comprising:
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providing a series of full-face cushions, each of the full-face cushions including a nasal bridge region, cheek regions and a chin region, each of the full-face cushions defining, at least in part, a breathing cavity, the series comprising; a first full-face cushion, the first full-face cushion comprising a first membrane including a first nasal bridge region, first cheek regions and a first chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the first membrane having an inner edge that defines a first triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the first triangular-shaped aperture including a lower portion having a first mouth width; and a second full-face cushion, the second full-face cushion comprising a second membrane including a second nasal bridge region, second cheek regions and a second chin region to seal on a nasal bridge region, cheek regions, and a chin region of the patient'"'"'s face, the second membrane having an inner edge that defines a second triangular-shaped aperture to receive the patient'"'"'s nose and mouth, the second triangular-shaped aperture including a lower portion having a second mouth width; wherein, in a front view, a height of the first triangular-shaped aperture is different than a height of the second triangular-shaped aperture, and the first mouth width and the second mouth width are constant, wherein each of the full-face cushions in the series includes a support structure, each support structure including; a wall; and an underlying cushion connected to the wall, wherein each underlying cushion, in a cross-sectional view, extends from a respective wall and toward a respective breathing cavity to provide support to a respective one of the membranes, each underlying cushion includes cheek regions extending adjacent a perimeter of a respective one of the triangular-shaped apertures such that each respective full-face cushion has at least a double-walled construction in the cheek regions such that each underlying cushion is positioned to restrain movement of a respective one of the membranes, and wherein each underlying cushion is absent in a majority of the chin region of a respective one of the full-face cushions so as to allow each respective membrane to readily flex in the chin region of the respective full-face cushion, and selecting, for the treatment, a full-face cushion from the series of full-face cushions, in accordance with a size of the patient'"'"'s face. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification