Compact oronasal patient interface

1. A breathing arrangement for use between a patient and a structure to deliver a breathable gas to the patient for treatment of sleep disordered breathing, the breathing arrangement comprising:

a patient interface including

a nozzle assembly including a pair of nozzles structured to sealingly engage with a patient's nose in use without forming a seal on a nasal bridge region of a patient's face, each of the pair of nozzles including a dual wall construction including an inner wall and an outer wall that surrounds the inner wall,

wherein the outer wall is adapted to contact the patient and at least partly define a nasal aperture with a first free edge of the outer wall that is spaced from and unattached to a second free edge of the inner wall, the nasal aperture configured to provide air to the patient's nose;

a pair of inlet conduits structured to deliver breathable gas into the patient interface for breathing by the patient, each of the pair of inlet conduits provided to a respective one of lateral sides of the patient interface;

a connector arrangement to interconnect each of the pair of inlet conduits to the respective one of lateral sides of the patient interface;

a joint to couple the pair of inlet conduits to an air delivery tube supplying the breathable gas; and

a headgear assembly to support the patient interface in a sealed position on the patient's face.

2. The breathing arrangement according to claim 1 , wherein the patient interface comprises a substantially rigid frame portion, and the nozzle assembly is secured to the substantially rigid frame portion.

3. The breathing arrangement according to claim 1 , wherein the headgear assembly comprises a strap routed over a top of the patient's ears.

4. The breathing arrangement according to claim 1 , wherein the headgear assembly is connected to a pair of connectors, each of the pair of connectors provided to a respective one of the pair of inlet conduits.

5. The breathing arrangement according to claim 1 , wherein the nozzle assembly comprises a flexible silicone material.

6. The breathing arrangement according to claim 1 , wherein each of the inner wall and the outer wall includes an outer surface having a concave shape before use.

7. The breathing arrangement according to claim 6 , wherein the outer wall is adapted to seal around the patient's nare along the concave outer surface.

8. The breathing arrangement according to claim 1 , wherein the outer wall is thinner than the inner wall.

9. The breathing arrangement according to claim 1 , wherein each of the inner wall and the outer wall includes a generally truncated, hollow cone shape.

10. The breathing arrangement according to claim 1 , wherein each of the pair of nozzles includes a nozzle portion and a conduit, the nozzle portion and the conduit being integrally formed in one piece from the same material, and the nozzle portion including the inner wall and the outer wall.

11. The breathing arrangement according to claim 10 , wherein the nozzle portion includes a base closed by a joint between the inner and outer walls, and each of the inner and outer walls is generally cone-shaped and includes a concave outer surface such that each nozzle portion tapers from the base towards its distal end whereby a width of the distal end is less than a width of the base.

12. A breathing arrangement for use between a patient and a structure to deliver a breathable gas to the patient for treatment of sleep disordered breathing, the breathing arrangement comprising:

a patient interface including:

a nozzle assembly including a pair of nozzles structured to sealingly engage with a patient's nose in use without forming a seal on a nasal bridge region of a patient's face, each of the pair of nozzles including a dual wall construction including an inner wall and an outer wall that surrounds the inner wall,

wherein the outer wall is adapted to contact the patient and at least partly define a nasal aperture with a first free edge of the outer wall that is spaced from and unattached to a second free edge of the inner wall, the nasal aperture configured to provide air to the patient's nose, and

a mouth cushion structured to sealing engage around an exterior of a patient's mouth in use;

a pair of inlet conduits structured to deliver breathable gas into the patient interface for breathing by the patient, each of the pair of inlet conduits provided to a respective one of lateral sides of the patient interface;

a connector arrangement to interconnect each of the pair of inlet conduits to the respective one of lateral sides of the patient interface;

a joint to couple the pair of inlet conduits to an air delivery tube supplying the breathable gas; and

a headgear assembly to support the patient interface in a sealed position on the patient's face.

13. The breathing arrangement according to claim 12 , wherein the patient interface comprises a substantially rigid frame portion, and the mouth cushion is secured to the substantially rigid frame portion.

14. The breathing arrangement according to claim 12 , wherein the headgear assembly comprises a strap routed over a top of the patient's ears.

15. The breathing arrangement according to claim 12 , wherein the headgear assembly is connected to a pair of connectors, each of the pair of connectors provided to a respective one of the pair of inlet conduits.

16. The breathing arrangement according to claim 12 , wherein the nozzle assembly comprises a flexible silicone material.

17. The breathing arrangement according to claim 12 , wherein the nozzle assembly is mounted upon the mouth cushion.

18. The breathing arrangement according to claim 17 , further comprising a mechanical fastener to secure the nozzle assembly to the mouth cushion while allowing gas to flow between the nozzle assembly and the mouth cushion.