Patent ID: 8061355
Filing Date: 2011-11-22
Classification: A61M

Abstract:
1. A patient interface device comprising: a mask having a first mask end portion, a second mask end portion, a first mask opening defined in the first mask end portion and adapted to receive a portion of a patient responsive to the mask be worn by such a patient, and a second mask opening defined in the second mask end portion; a conduit having a first conduit end portion rotatably coupled to the second mask end portion, a second conduit end portion disposed at an non-zero angle with respect to the first conduit end portion, and a generally planar portion disposed between the first conduit end portion and the second conduit end portion, wherein an exhaust opening is defined in the planar portion; and a moveable valve member coupled to the conduit and adapted to close the exhaust opening responsive to a pressure of a gas within the conduit being above a predetermined threshold.