GAS DELIVERY MASK WITH FLEXIBLE BELLOWS

摘要

A gas delivery mask apparatus is provided. The mask apparatus may include a mask body, a face mask, and a bellows. The mask body may include a tube configured to extend upwardly adjacent a subject's forehead. The face mask m ay be configured to deliver gas to the subject and may include a flexible cushi on portion configured to interface with the subject's face and a substantially rigid base portion configured to support the cushion portion. The bellows ma y be configured to couple the tube with the substantially rigid base portion o f the face mask. The bellows may be flexible to allow movement of the face mas k relative to the tube.