A respiratory mark
assembly for delivering breathable gas to a patient includes a frame and a
cushion. The
cushion has a non-face contacting portion structured to be connected to the frame, a face-contacting portion structured to engage the patient's face, and an intermediate portion that interconnects the non-face contacting portion and the face-contacting portion. The intermediate portion includes a gusset portion that applies a first component of force to the patient's face through the face-contacting portion. A spring structure is coupled with the face-contacting portion of the
cushion. The spring structure applies a second component of force to the patient's face through the face-contacting portion. The first and second components of force applied by the gusset portion and spring structure, respectively, determine a
contact force of the cushion applied to the patient's face through the face-contacting portion. The intermediate portion may also include an elastic
cuff portion. Further, in the case of an oral
mask, the sealing section may include a portion that is designed to promote a better seal in the
chin region of the
mask.