Patent ID: 11890418
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A  Y | IPC A

Claim 0:
1. A mask system for delivering pressurized breathable gas to a patient, the mask system comprising:
a first cushion component configured to sealingly engage with the patient's face in use, the first cushion component having an aperture to communicate pressurised gas to the patient's airways in use,
wherein the first cushion component includes a first integrated unit having a first front portion and a first cushion configured to sealingly engage with the patient's face, the first front portion and the first cushion forming at least a portion of a first mask interior breathing chamber, and
wherein the first front portion is relatively harder than the first cushion thereof;
a second cushion component configured to sealingly engage with the patient's face in use, the second cushion component having an aperture to communicate pressurised gas to the patient's airways in use,
wherein the second cushion component includes a second integrated unit having a second front portion and a second cushion configured to sealingly engage with the patient's face, the second front portion and the second cushion forming at least a portion of a second mask interior breathing chamber, and
wherein the second front portion is relatively harder than the second cushion thereof;
wherein the first cushion component and the second cushion component are different structurally from one another at least in one respect; and
a frame which is configured to couple interchangeably with the first cushion component and the second cushion component in use at an interface,
wherein each of the first cushion component and the second cushion component comprises a retainer part configured and arranged to engage behind a retainer part provided to the frame when each of the first cushion component and the second cushion component is coupled with the frame,
wherein each of the first cushion component and the second cushion component is configured to be engaged with the frame by engaging the retainer part of each of the first cushion component and the second cushion component with the retainer part of the frame substantially along an anterior-posterior axis, and
wherein each of the first cushion component and the second cushion component is configured to be engaged with the frame to substantially resist adjustable movement between the front portion of each of the first cushion component and the second cushion component and the frame at least along the anterior-posterior axis.