Abstract: A mask assembly (10) for use in a system delivering a flow of a treatment gas to the airway of a pediatric patient. The mask assembly includes a mask body (12) having an opening (13) adapted to receive a treatment gas supply and a flexible peripheral seal structure (20). The flexible seal structure includes a first side coupled to the mask body and an opposite second side having an opening adapted to receive the face of the pediatric patient such that the second side sealingly engages the perimeter of the pediatric patient's face. The opening is defined by a height (Hl) and a width (Wl). The ratio of the height to width of the opening is about 0.83.

Abstract: A mask assembly is provided for delivering gas to a patient that includes a mask body and a breathing circuit interface. The mask body includes an opening for reception of the gas and includes a seal structure for sealingly engaging with the face of the patient and surrounding at least the nose and mouth of the patient. The breathing circuit interface includes a first portion rotatably connected with the mask body and a second portion that is constructed and arranged to releasably connect with a conduit for delivering the gas to the patient through the opening.

Abstract: A mask assembly (10) is provided for delivering gas to a patient that includes a mask body (12) and a breathing circuit interface (16). The mask body includes an opening (13) for reception of the gas and includes a seal structure (20) for sealingly engaging with the face of the patient and surrounding at least the nose and mouth of the patient. The breathing circuit interface includes a first portion (17) rotatably connected with the mask body and a second portion (19) that is constructed and arranged to releasably connect with a conduit (18) for delivering the gas to the patient through the opening.

Abstract: A mask assembly (10) is provided for delivering gas to a patient that includes a mask body (12) and a breathing circuit interface (16). The mask body includes an opening (13) for reception of the gas and includes a seal structure (20) for sealingly engaging with the face of the patient and surrounding at least the nose and mouth of the patient. The breathing circuit interface includes a first portion (17) rotatably connected with the mask body and a second portion (19) that is constructed and arranged to releasably connect with a conduit (18) for delivering the gas to the patient through the opening.