Patent ID: 8939151
Filing Date: 2015-01-27
Classification: A61M

Abstract:
1. A sealing interface for use as part of an apparatus for supplying a flow of respiratory gases to a user, the sealing interface comprising: a mask frame, a resilient rubber outer sheath and a foam or gel inner cushion, said outer sheath and said inner cushion being independently mounted to said mask frame, in use said outer sheath covering said inner cushion; said outer sheath comprising a sheath first side, said sheath first side adapted to substantially seal against a face of the user, a face side of said inner cushion resiliently supporting at least a portion of said sheath first side; said inner cushion comprising a toothed profile in said face side of said inner cushion, said toothed profile comprising at least one tooth comprising an apex between a first valley portion and a second valley portion, said at least one tooth being disposed in a perimeter of said face side of said inner cushion; and said apex being adapted to be in supporting contact with said outer sheath first side when said sealing interface contacts the face of the user.