Breathing assistance apparatus

摘要

A mask assembly for use as part of an apparatus for supplying a flow of respiratory gases to a user is disclosed. The mask assembly includes a mask body having an inlet through which said flow of respiratory gases are provided to the interior of said mask body. A mask seal assembly comprising a seal of flexible material and a clip of rigid material is attached to the body. The seal has a first side and a second side. The first side of the seal is shaped to approximately match the contours of a user's face and in use substantially seal against a user's face. The second side is attached to the clip. The clip provides an interface extending substantially the full perimeter or periphery of the mask seal assembly for releasably attaching the mask seal assembly to the mask body. The clip comprises a bridging portion spanning outwards from the perimeter or periphery of the mask body to space at least a portion of the second side of the seal outwards from the perimeter or periphery of the mask body.

主权项

1. A mask assembly for use as part of an apparatus for supplying a flow of respiratory gases to a user, the mask assembly comprising:
a mask body having an inlet through which the flow of respiratory gases are provided to an interior of said mask body, the inlet adapted to be connected to a gases conduit, the mask body configured to be releasably attached to a mask seal assembly comprising a seal of flexible material and a clip of rigid material, said seal having a first side and a second side and having an upper portion and a lower portion, an opening defined between the upper and lower portions, said upper portion being configured to be disposed proximate a user's nose in use and the lower portion being configured to be disposed proximate to a user's mouth in use, and a first direction extending from the upper portion of said seal toward said lower portion of said seal, said first side of said seal being shaped to approximately match contours of a user's face and in use substantially seal against a user's face, and wherein said second side is attached to said clip, said clip providing an interface extending along a first perimeter of said mask seal assembly for releasably attaching said mask seal assembly to said mask body, and said clip comprising a bridging portion extending outwards beyond an outermost mask body perimeter of said mask body and said interface along the first direction, wherein said bridging portion supports said seal at a location outside of said outermost mask body perimeter of said mask body and beyond said clip along the first direction.