Patent ID: 8667964

Claim:
A patient interface comprising: a body portion configured to communicate with at least one fluid path; at least one at least one nostril interface extending from the body portion, the nostril interface comprising an insertion portion configured to be inserted into a nostril of a patient and to be in communication with the at least one fluid path, the insertion portion comprising at least one opening configured to communicate fluid between the at least one fluid path and the nostril, the at least one opening being directed in a non-axial direction relative to a longitudinal axis of the insertion portion; and a seal portion constructed and arranged to provide a seal between the patient interface and the nostril, wherein the insertion portion comprises a distal end and a sidewall extending from the distal end towards the seal portion, wherein the longitudinal axis of the insertion portion extends from the distal end to a plane defined by a top surface of the seal portion, and wherein the at least one opening extends through the sidewall and is directed in a non-axial direction relative to the longitudinal axis of the insertion portion.