Patent ID: 8267089

Claim:
A patient interface device for use in delivering a flow of gas to an airway of a patient, the patient interface device comprising: (a) a mask shell having a patient side and an outer side opposite the patient side adapted to receive a flow of gas; and (b) a cushion assembly comprising: (1) a seal cushion having a first end portion structured to contact a patient's face to form a seal therewith and a second end portion opposite the first end portion, the seal cushion further including a cavity structured to receive a portion of the patient's face, wherein the flow of gas communicates with the cavity, wherein the seal cushion seals around an airway of such a patient, and wherein the seal cushion defines a first area over a face of such a patient responsive to the patient interface device being worn by such a patient, and (2) a support cushion having a first end portion adapted to contact a surface of a patient and a second end portion, wherein the support cushion defines a second area over such a patient responsive to the patient interface device being worn by such a patient, and wherein the second area overlaps at least a portion of the first area responsive to the patient interface device being worn by such a patient.