초록 ▼

An exhaust port assembly comprising a conduit carries a flow of gas. A vent assembly having a fixed exhaust area is provided on the conduit for venting a flow of exhaust gas from within the conduit to ambient atmosphere. The vent assembly is configured so as to minimize noise associated with the flo

An exhaust port assembly comprising a conduit carries a flow of gas. A vent assembly having a fixed exhaust area is provided on the conduit for venting a flow of exhaust gas from within the conduit to ambient atmosphere. The vent assembly is configured so as to minimize noise associated with the flow of exhaust gas passing to atmosphere, diffuse the flow of exhaust gas passing to ambient atmosphere over a relatively large area, and minimize the area occupied by the venting assembly on the conduit.

대표청구항 ▼

What is claimed is: 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

What is claimed is: 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; anda 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.