Patent ID: 8826908

Claim:
An elbow for a respiratory mask comprising: (a) a first portion having a first axis and being adapted for connection to an air delivery conduit; (b) a second portion, having a second axis and being adapted for connection to a frame of the respiratory mask; and (c) a vent constructed and arranged to allow the passage of air from an interior of the respiratory mask to atmosphere; wherein the elbow further defines: (i) an inlet port to deliver incoming gas in a first direction to a breathing cavity defined by the mask, and (ii) an exhaust port separated from the inlet port by at least one baffle, wherein the baffle has at least one curved portion along an end face of the baffle, as viewed along an end of the second portion provided to the frame of the mask, and wherein the baffle is configured to direct exhaust gas away from the nasal breathing cavity via the vent in a second direction that is substantially opposite to the first direction and substantially parallel to the second axis, and the baffle and the inlet port are non-concentric.