DELIVERY OF RESPIRATORY THERAPY
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.
1 . A respiratory mask for continuous positive airway pressure treatment comprising: a cushion adapted to be positioned against the face of a patient, the cushion being configured in a gasket arrangement around an entrance to the airways of the patient, the cushion being constructed from a polyurethane foam and having a thickness of greater than about 5 mm.
2 . The mask of claim 1 , wherein the foam is positioned to contact the skin directly.
3 . The mask of claim 1 , wherein the foam is unskinned.
4 . The mask of claim 1 , wherein the foam is a low density foam.
5 . The mask of claim 1 , wherein the foam has a density in the range of 30-200 kg/m 3 .
6 . The mask of claim 1 , wherein the foam has a density in the range of 50 to 150 kg/m 3 .
7 . The mask of claim 1 , wherein the foam has a density in the range of 75-120 kg/m 3 .
8 . The mask of claim 1 , wherein the foam has a density of about 55 kg/m 3 .
9 . The mask of claim 1 , wherein the foam has a density in the range of 60-100 kg/m 3 .
10 . The mask of claim 1 , wherein the foam has a density less than about 60 kg/m 3 .