Patent ID: 11944754
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A  D  F  B | IPC A  B  D  F

Claim 0:
1. An air delivery conduit configured to connect a patient interface to a supply of pressurized breathable gas for delivery of the breathable gas to a patient for treatment of sleep disordered breathing, the air delivery conduit comprising:
an inner surface defining a tubular passageway configured to, in use, convey the breathable gas from the supply to the patient interface;
an outer surface having a tubular shape and being exposed to atmosphere in use; and
at least one resilient support structure attached to the outer surface and extending around a circumference of the conduit such that, in an axial cross-sectional view of the conduit, the inner surface and the outer surface extend between spaced-apart sections of the support structure, the support structure being configured to provide form and crush-resistance to the conduit during treatment of sleep disordered breathing,
wherein, in the axial cross-sectional view, the inner surface and the outer surface have matching arc-shaped portions extending between adjacent spaced-apart sections of the support structure, each arc-shaped portion of the inner surface forming a concave shape and each arc-shaped portion of the outer surface forming a convex shape, and
wherein the outer surface has a substantially non-circular transverse cross-sectional shape.