Cushion for a patient interface
First Claim
Patent Images
1. A cushion for a patient interface, the cushion including a nasal bridge region, a pair of cheek regions and a lower lip region, the cushion comprising:
- an outer membrane providing a sealing structure adapted to form a seal with a patient'"'"'s face when the cushion is worn; and
an underlying membrane spaced away from the outer membrane, the underlying membrane providing a support structure for the outer membrane,wherein the outer membrane and the underlying membrane each have an inner edge which defines an aperture to receive the patient'"'"'s nose when the cushion is worn, and the underlying membrane is segmented along its inner edge to provide a plurality of finger portions and a plurality of slots separating the plurality of finger portions,wherein each slot is disposed between a respective two adjacent finger portions, each slot having a depth measured from the inner edge of the underlying membrane, and slots in the nasal bridge region of the cushion have depths that are different than depths of slots in the pair of cheek regions and/or the lower lip region of the cushion to vary flexibility of the plurality of finger portions around a cushion perimeter, andwherein the depth of each slot is measured from the inner edge of the underlying membrane to an end of a through-hole in the underlying membrane formed by the respective slot.
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Abstract
A cushion for a patient interface includes an outer membrane providing a sealing structure adapted to form a seal with the patient'"'"'s face in use and an underlying membrane generally spaced away from the outer membrane. The underlying membrane provides a support structure for the outer membrane. The outer membrane and the underlying membrane each have an inner edge which defines an aperture to receive the patient'"'"'s nose in use. The underlying membrane is segmented along its inner edge.
356 Citations
20 Claims
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1. A cushion for a patient interface, the cushion including a nasal bridge region, a pair of cheek regions and a lower lip region, the cushion comprising:
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an outer membrane providing a sealing structure adapted to form a seal with a patient'"'"'s face when the cushion is worn; and an underlying membrane spaced away from the outer membrane, the underlying membrane providing a support structure for the outer membrane, wherein the outer membrane and the underlying membrane each have an inner edge which defines an aperture to receive the patient'"'"'s nose when the cushion is worn, and the underlying membrane is segmented along its inner edge to provide a plurality of finger portions and a plurality of slots separating the plurality of finger portions, wherein each slot is disposed between a respective two adjacent finger portions, each slot having a depth measured from the inner edge of the underlying membrane, and slots in the nasal bridge region of the cushion have depths that are different than depths of slots in the pair of cheek regions and/or the lower lip region of the cushion to vary flexibility of the plurality of finger portions around a cushion perimeter, and wherein the depth of each slot is measured from the inner edge of the underlying membrane to an end of a through-hole in the underlying membrane formed by the respective slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cushion adapted to be mounted on a frame of a patient interface for use with treatment of sleep disordered breathing, the cushion including a nasal bridge region, a pair of cheek regions and a lower lip region, the cushion comprising:
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an outer membrane; and an underlying membrane, the outer membrane being thinner than the underlying membrane and being spaced away from the underlying membrane and when the cushion is worn being adapted to contact a facial region of a patient, the underlying membrane having an inner edge defining an aperture and being divided along the inner edge to form a plurality of flexible finger portions and a plurality of slots separating the plurality of finger portions, wherein each slot is disposed between a respective two adjacent finger portions, each slot having a length measured from the inner edge of the underlying membrane, and the lengths of a first group of slots of the plurality of slots being different than the lengths of a second group of slots of the plurality of slots to vary flexibility of the plurality of finger portions around a cushion perimeter, and wherein the length of each slot is measured from the inner edge of the underlying membrane to an end of a through-hole in the underlying membrane formed by the respective slot. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A cushion for a patient interface, the cushion including a nasal bridge region, a pair of cheek regions and a lower lip region, the cushion comprising:
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a membrane; and an underlying support structure provided along a side of the cushion to support the membrane, the underlying support structure being segmented and configured to conform to a patient'"'"'s face when the cushion is worn, wherein the segmented underlying support structure provides a series of alternating finger portions and slots along the cushion perimeter, and slots along a cushion perimeter, wherein depths of at least two of the slots are different to vary flexibility of the series of finger portions, and wherein the underlying support structure has an inner edge which defines an aperture to receive the patient'"'"'s nose when the cushion is worn, each depth being measured from the inner edge to an end of a through-hole in the underlying support structure formed by the respective slot. - View Dependent Claims (18, 19, 20)
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Specification