Headgear assembly for a respiratory mask assembly

摘要

A respiratory mask assembly for delivering breathable gas to a patient includes a frame (12) and a headgear assembly (16) removably attachable to the frame. The headgear assembly includes a pair of side portions (18) and a rear portion (20) that interconnects the pair of side portions. The pair of side portions includes at least one strap (22, 24). The rear portion has at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of the straps in the first direction.