Mask system
A mask system including a headgear and cushion module and a seal and frame module provided to the headgear and cushion module. The seal and frame module includes a sealing portion adapted to form a seal with the patient's face and a frame portion adapted to form a breathing chamber. The headgear and cushion module includes a cushion region adapted to support and shape the sealing portion and a headgear region adapted to support and stabilize the mask system on the patient's face.
1. A patient interface for sealed delivery of a flow of breathable gas at a continuously positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least entrance to the patient's nares for treatment of sleep disordered breathing, the patient interface comprising:
a cushion region configured to at least partly define a breathing chamber pressurizable to a therapy pressure when in contact with the patient's face in use, the cushion region including a seal-forming structure configured to form a seal with the patient's face such that the flow of breathable gas at the therapy pressure is delivered to at least the entrance to the patient's nares,
the cushion region comprising textile that forms a front portion of the breathing chamber and is configured to contact the patient's face in use to form the seal with the region of the patient's face, the textile including a first textile layer oriented away from the patient's face to form a front outer surface of the breathing chamber and a second textile layer configured to contact the patient's face, in use,
wherein at least a portion of the cushion region comprises an inner cushioning layer disposed between the first textile layer and the second textile layer.
2. The patient interface according to claim 1 , further comprising at least one headgear strap comprising a textile material.
3. The patient interface according to claim 2 , wherein the at least one headgear strap is structured and arranged to extend along a side of the patient's head to support the cushion region on the patient's face, and
wherein the at least one headgear strap along the side of the patient's head is structured to contain a sealed air delivery passageway within the textile along the side of the patient's head, the sealed air delivery passageway arranged to communicate with a lateral portion of the cushion region to deliver breathable gas to the cushion region.
4. The patient interface according to claim 3 , further comprising a connector provided to the cushion region and adapted to communicate with the sealed air delivery passageway.
5. The patient interface according to claim 2 , wherein the textile material of the at least one headgear strap comprises substantially rounded edges.
6. The patient interface according to claim 2 , wherein the at least one headgear strap comprises an upper strap adapted to extend above the patient's ears.
7. The patient interface according to claim 2 , wherein the at least one headgear strap comprises foam attached to the textile material.
8. The patient interface according to claim 2 , wherein the at least one headgear strap comprises a composite construction with the textile material comprising an outer layer providing an exterior surface of the strap.
9. The patient interface according to claim 1 , wherein the cushion region comprises a nasal interface.
10. The patient interface according to claim 1 , wherein the cushion region comprises a full-face interface.
11. The patient interface according to claim 1 , wherein the breathing chamber is configured to receive the patient's nose therein, in use.
12. The patient interface according to claim 1 , wherein the first textile layer is laminated or sealed so that the first textile layer is air impermeable.
13. The patient interface according to claim 2 , wherein the at least one headgear strap includes a one-piece construction with the cushion region.
14. The patient interface according to claim 1 , wherein at least a portion of the textile forming the front portion of the breathing chamber includes air permeable regions to form a vent to permit venting of exhaust gases from the patient interface.
15. The patient interface according to claim 1 , wherein the inner cushioning layer comprises spacer fabric.
16. The patient interface according to claim 1 , wherein the inner cushioning layer comprises at least one layer of foam.
17. The patient interface according to claim 1 , wherein the cushion region further comprises a structural component to provide structural support and stiffness to the inner cushioning layer.
18. The patient interface according to claim 1 , wherein a first portion of the cushion region includes the inner cushioning layer and a second portion of the cushion region does not include the inner cushioning layer.
19. The patient interface according to claim 1 , wherein the textile of the cushion region comprises substantially rounded edges.
20. The patient interface according to claim 1 , wherein the cushion region further comprises a structural component configured to extend outside the textile and provide connection to an air delivery tube.