Abstract: A respiratory mask assembly is provided, including a generally rigid mask frame coupled to a cushion formed of a resilient material. In one example, the cushion is maintained in abutment with the mask frame by a portion of a ledge being retained by a retainer member. In another example, the mask assembly further includes a collar for maintaining the cushion in abutment with the mask frame. Each of the mask frame, cushion, and collar can be generally triangularly shaped. The mask assembly can also include a plurality of generally triangularly-shaped cushions each including a relatively different face-engaging portion with an outer membrane. The mask assembly can also include a forehead support including a forehead support arm, forehead support flange, and a resilient forehead cushion. The forehead cushion is adapted to be infinitely vertically adjustable within a range relative to the forehead support arm.

Abstract: A nasal CPAP treatment apparatus is disclosed with a flow generator coupled to a nasal mask. The mask has a nasal cushion forming a nose-receiving cavity. The cushion has a triangularly-shaped frame of resilient material with a mask engaging portion connected by a side wall to a face engaging portion which has a nasal bridge region, a cheek region and a lip region. The cushion may have a portion of the side wall in the nasal bridge region being other than straight to provide an improved sealing in the nasal bridge region. A plurality of membranes, preferably three, of resilient material extend substantially around the triangularly-shaped frame. Some of the membranes are thicker in the lip region than in the nasal bridge region to improve fit of the cushion in use.

Abstract: A respiratory interface device includes a respiratory mask that interfaces with a face of a patient. The respiratory mask comprises a body portion that forms an enclosure around a nose of a patient and at least one set of headgear strap flanges. The body portion is substantially entirely manufactured from an elastomeric material. A bellows-like structure is integrally molded in the body portion to create a sealing interface between an inner bottom portion of the mask and the patient's nose.

Abstract: An integrally molded ventilation interface includes a hollow bellows-like structure and two nasal prongs extending from a top surface of the bellows. A pair of headgear strap flanges can also be molded integrally with the ventilation interface. The nasal prongs provide a first sealing interface between an outer surface of the nasal prongs and an inner surface of the patient's nares. The bellows provides a second sealing interface between a top surface of the bellows-like structure and a bottom surface of a patient's nose. The headgear strap flanges provide a third sealing interface between the ventilation interface and a mustache region of the patient's face as well as a bottom surface of the patient's nose.