Delivery of respiratory therapy with nasal interface
First Claim
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1. A respiratory mask for continuous positive airway pressure treatment comprising:
- a cushion adapted to be positioned against the face of a patient to deliver breathable gas to the patient,the cushion being constructed from a polyurethane foam and being configured to form a gasket sealing arrangement around an entrance to the airways of the patient, the cushion including only one exit orifice formed therein to expel the breathable gas from the cushion to deliver the breathable gas to the patient'"'"'s airways, the exit orifice being configured to be positioned externally of the patient'"'"'s airways and in fluid communication therewith,the cushion having a main body and two wings integral with the main body and extending respectively from opposite lateral sides of the main body,wherein the cushion comprises a single continuous sealing surface extending across the main body, at least a portion of the sealing surface being arranged to, in use, seal with the underside of the patient'"'"'s nose, the sealing surface having a saddle shape with curvature in two directions including a first direction and a second direction, the first direction being transverse to the second direction,wherein the curvature in the first direction forms a concave shape, and the curvature in the second direction forms a convex shape structured to accommodate the naso-labial angle of a patient'"'"'s nose.
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Abstract
A respiratory mask for continuous positive airway pressure treatment includes a cushion adapted to be positioned against the face of a patient. The cushion is configured in a gasket arrangement around an entrance to the airways of the patient. The cushion is constructed from a polyurethane foam and has a thickness of greater than about 5 mm.
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Citations
34 Claims
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1. A respiratory mask for continuous positive airway pressure treatment comprising:
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a cushion adapted to be positioned against the face of a patient to deliver breathable gas to the patient, the cushion being constructed from a polyurethane foam and being configured to form a gasket sealing arrangement around an entrance to the airways of the patient, the cushion including only one exit orifice formed therein to expel the breathable gas from the cushion to deliver the breathable gas to the patient'"'"'s airways, the exit orifice being configured to be positioned externally of the patient'"'"'s airways and in fluid communication therewith, the cushion having a main body and two wings integral with the main body and extending respectively from opposite lateral sides of the main body, wherein the cushion comprises a single continuous sealing surface extending across the main body, at least a portion of the sealing surface being arranged to, in use, seal with the underside of the patient'"'"'s nose, the sealing surface having a saddle shape with curvature in two directions including a first direction and a second direction, the first direction being transverse to the second direction, wherein the curvature in the first direction forms a concave shape, and the curvature in the second direction forms a convex shape structured to accommodate the naso-labial angle of a patient'"'"'s nose. - 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, 30, 31, 32, 33, 34)
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Specification