Respiratory mask and related portions, components or sub-assemblies
First Claim
1. A cushion module for a respiratory interface, comprising:
- a seal housing constructed from a relatively rigid material, the seal housing defining an aperture configured to allow a breathing gas to enter an interior of the cushion module;
a seal supported by the seal housing and having an upper portion and a lower portion, the seal further comprising a face contacting surface configured to contact the face of a user and create at least a substantial seal with the face of the user, the face contacting surface having an inner edge defining an opening in the face contacting surface, wherein the upper portion of the seal comprises a reduced stiffness portion defined between a first boundary and a second boundary such that the reduced stiffness portion deforms in response to forward movement of an upper portion of the face contacting surface, wherein an angle defined between the first boundary and the second boundary is at least 20 degrees;
wherein the reduced stiffness portion comprising a rolling portion configured to roll over onto an outer surface of the cushion module in response to the forward movement of the upper portion of the face contacting surface.
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Accused Products
Abstract
A respiratory mask for providing positive pressure therapy and a bias-flow venting system configured to reduce discernable draft generated by exhausted air are disclosed herein. The respiratory mask has a ball jointed elbow, one or more detachable forehead pieces and a headgear with a spacer fabric region. The elbow is configured to be removable when oriented to a predetermined position. The forehead pieces are provided in one or more sizes. The spacer fabric region having two or more layers wherein the raw edges are turned to the inside of the layers. The seal having improved seal performance and accommodating a wider variety of facial geometries. The bias-flow system having a tube and exhaust holes radially aligned on a bead of the tube. The bias-flow system also having an annular component exhaust holes and a shroud having a plenum chamber around the exhaust holes.
810 Citations
29 Claims
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1. A cushion module for a respiratory interface, comprising:
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a seal housing constructed from a relatively rigid material, the seal housing defining an aperture configured to allow a breathing gas to enter an interior of the cushion module; a seal supported by the seal housing and having an upper portion and a lower portion, the seal further comprising a face contacting surface configured to contact the face of a user and create at least a substantial seal with the face of the user, the face contacting surface having an inner edge defining an opening in the face contacting surface, wherein the upper portion of the seal comprises a reduced stiffness portion defined between a first boundary and a second boundary such that the reduced stiffness portion deforms in response to forward movement of an upper portion of the face contacting surface, wherein an angle defined between the first boundary and the second boundary is at least 20 degrees; wherein the reduced stiffness portion comprising a rolling portion configured to roll over onto an outer surface of the cushion module in response to the forward movement of the upper portion of the face contacting surface. - 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, 26, 27, 28, 29)
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Specification