Ergonomic and adjustable respiratory mask assembly with cushion
First Claim
Patent Images
1. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
- a frame having a front surface and a rear surface adapted in use to face the patient; and
a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim,wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose,wherein the membrane includes a contoured notch in a nasal bridge region of the cushion positioned substantially along the transition between the bony region and the cartilage region of the patient'"'"'s nose to conform to the contours of the patient'"'"'s nasal bridge region.
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Accused Products
Abstract
A respiratory mask assembly for delivering breathable gas to a patient includes a frame having a front surface and a rear surface adapted in use to face the patient. A cushion having a side wall is removably attachable to the frame. The cushion has a rim extending away from the side wall, and a membrane provided to substantially surround the rim. An inner edge of the membrane defines an aperture, the aperture having a generally trapezoidal shape.
117 Citations
101 Claims
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1. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a frame having a front surface and a rear surface adapted in use to face the patient; and a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein the membrane includes a contoured notch in a nasal bridge region of the cushion positioned substantially along the transition between the bony region and the cartilage region of the patient'"'"'s nose to conform to the contours of the patient'"'"'s nasal bridge region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a frame having a front surface and a rear surface adapted in use to face the patient; and a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein the membrane is adapted to form a seal on the patient'"'"'s lip region positioned below the patient'"'"'s nose and above the upper lip of the patient, wherein the membrane includes a notch to accommodate a septum on the patient'"'"'s lip region.
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22. A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
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a side wall structured to be engageable with and removably attached to a frame; a rim extending away from the side wall; and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein the membrane includes a contoured notch in a nasal bridge region of the cushion positioned substantially along the transition between the bony region and the cartilage region of the patient'"'"'s nose to conform to the contours of the patient'"'"'s nasal bridge region. - View Dependent Claims (23, 24, 25, 26)
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27. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a frame having a front surface and a rear surface adapted in use to face the patient; and a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein a contact area between the membrane and the patient'"'"'s face in the nasal bridge region is greater than a contact area between the membrane and lip and cheek regions of the patient.
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28. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a frame having a front surface and a rear surface adapted in use to face the patient; and a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein the rim does not extend from the sidewall in a nasal bridge region of the cushion adapted to seal the patient'"'"'s nasal bridge region.
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29. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a frame having a front surface and a rear surface adapted in use to face the patient; and a cushion having a side wall engageable with and removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane extending away from the side wall and spaced from the rim provided to substantially surround the rim, wherein an inner edge of the membrane defines an aperture, the aperture having a predetermined shape adapted to form a seal on the patient'"'"'s nasal bridge region positioned no higher than substantially along a transition between the bony region and the cartilage region of the patient'"'"'s nose, wherein a thickness of the membrane varies from a nasal bridge region of the cushion adapted to seal the patient'"'"'s nasal bridge region to a lip region of the cushion adapted to seal the patient'"'"'s lip region positioned below the patient'"'"'s nose and above the upper lip of the patient to cheek regions of the cushion adapted to seal the patient'"'"'s cheeks.
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30. A respiratory mask assembly for delivering a flow of breathable gas to a patient, comprising:
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a substantially rigid frame having a front surface and a rear surface adapted in use to face the patient, the frame comprising an aperture in the front surface for the introduction of the breathable gas into a nasal breathing cavity defined by the frame, and an inner wall and an outer wall each extending rearwardly from and perpendicular to the rear surface and spaced in parallel to define a channel; and a cushion configured to sealingly engage the patient'"'"'s face, the cushion having a side wall to be inserted into the channel of the frame, the side wall having a first engaging surface that engages a second engaging surface provided in the channel when the cushion and the frame are engaged with one another, wherein the first and second engaging surfaces engage with one another to removably attach the cushion to the frame such that the cushion and the frame are repeatedly engagable with and disengagable from each other, wherein the frame has a curvature that generally follows the facial contour of the patient'"'"'s face on each side of the patient'"'"'s nose. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a substantially rigid frame having a front surface and a rear surface adapted in use to face the patient, the frame having a curvature that generally follows the facial contour of the patient'"'"'s face, the frame comprising an aperture provided therethrough for the introduction of breathable gas into a nasal breathing cavity defined by the frame, and a channel comprising an inner wall and an outer wall being spaced from and parallel to each other, and a channel floor extending between the inner and outer walls; and a cushion comprising a sidewall structured to be received in the channel to removably attach the cushion to the frame, a rim extending away from the side wall, and a membrane provided to substantially surround the rim. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90)
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91. A respiratory mask assembly for delivering breathable gas to a patient, comprising:
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a substantially rigid frame, the frame comprising a front surface, the front surface comprising a bore for the introduction of the breathable gas into a nasal breathing cavity defined at least in part by the frame, the bore being configured to receive a swivel elbow, and a rear surface, the rear surface adapted in use to face the patient, the rear surface comprising a curvature that generally follows the facial contour of the patient'"'"'s face on each side of the patient'"'"'s nose and comprising an outer wall and an inner wall, the outer wall and the inner wall defining a channel, the channel comprising a channel floor extending between the inner wall and the outer wall, the channel floor being non-planar; and a cushion configured to sealingly engage the patient'"'"'s face, the cushion comprising a side wall configured to be inserted into the channel of the frame, the side wall having a first engaging surface that engages a second engaging surface provided in the channel when the cushion and the frame are engaged with one another, wherein the first and second engaging surfaces engage with one another to removably attach the cushion to the frame such that the cushion and the frame are repeatedly engageable with and disengageable from each other, the side wall having a length at least equal to a depth of the channel such that the side wall contacts the channel floor in an attached state, the cushion and the frame defining the nasal breathing cavity in the attached state, and a sealing element comprising an aperture to accept at least the nose of the patient, the sealing element further comprising a nasal bridge region configured to span across the bridge of the patient'"'"'s nose and sloping sides of the bridge that intersect with the nasal crease from between the patient'"'"'s cheeks and the sides of the patient'"'"'s nose, the sealing element being curved inwardly toward the nasal breathing cavity and being configured to contact at least the nasal bridge region and cheeks of the patient in use. - View Dependent Claims (92, 93, 94, 95, 96, 97, 98, 99, 100, 101)
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Specification