Patent ID: 7708017
Filing Date: 2010-05-04
Classification: A61M,A62B

Abstract:
1. A breathing arrangement for use between a patient and a structure to deliver a breathable gas to the patient, the breathing arrangement comprising: a pair of nozzles structured to sealingly engage with a patient's nose in use, each of said nozzles including an inner wall and one or more outer walls that surround the inner wall, wherein the inner wall and the one or more outer walls have a similar curvature along their length before use, wherein each of the inner and outer walls includes an outer surface having a concave shape before use, wherein, at least before use, the inner wall the one or more outer walls are each spaced apart from one other by an annular gap, and wherein the inner wall is adapted to extend inside the patient's nose and one of the outer walls is adapted to seal around the patient's nare in use, and wherein the concave outer surfaces of the inner and outer walls are co-extensive over at least a portion of a length of the inner wall.