| 主权项 |
1. A mask assembly for an interface used in providing positive pressure respiratory therapy, the mask assembly comprising:
a mask seal; and a mask shell that supports the mask seal; wherein the mask assembly is configured to be fully positioned lower than a bridge of a nose of a face of a user and to provide an exposed bridge of the nose of the user, the mask shell comprising a central portion and a pair of wings sweeping rearwardly of the central portion, an opening for a connector being formed in the mask shell in the central portion, the mask seal being connected to the mask shell, the mask seal comprising at least one oral opening on a lower portion and at least one nasal opening on an upper portion, the at least one oral opening being positioned opposite of the opening for the connector and the at least one nasal opening being positioned between the opening for the connector and the oral opening in a front to back direction, the upper portion of the mask seal comprising a first paddle, a second paddle, and a nasal region having an upper support surface being positioned between the first paddle and the second paddle such that an upwardly-open valley is defined by the first paddle, the upper support surface and the second paddle, at least a portion of the at least one nasal opening being positioned on the upper support surface within the valley, the valley being configured to provide an exposed tip of the nose of the user; wherein the mask seal comprises one or more features that decouple movement of the nasal portion and the oral portion to allow relative movement therebetween at least about a lateral axis that extends in a direction that is substantially perpendicular to a longitudinal axis extending in the front to back direction of the mask seal. |
