Nasal mask interface assembly

  • US 10,413,693 B2
  • Filed: 05/31/2017
  • Issued: 09/17/2019
  • Est. Priority Date: 07/01/2011
  • Status: Active Grant
First Claim
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1. A seal member for an interface assembly, the seal member configured to fit over a nose of a user in use, the seal member comprising:

  • a sidewall extending around a periphery of the seal member and having upper and lower sections, the upper section defining an apex of the seal member shaped to fit over a bridge of the nose of the user in use, the lower section defining left and right corners of the seal member, wherein left and right portions of the lower section of the sidewall proximate to the left and right corners of the seal member, respectively, are thickened relative to adjacent portions of the sidewall that are adjacent to the left and right portions;

    a thickened band positioned along the sidewall and extending from a left side of the apex, over the apex, to a right side of the apex of the sidewall, the thickened band projecting inwardly from an inner surface of the sidewall that faces the user in use;

    a flange extending inwardly from a proximal end of the sidewall, the flange comprising a face contacting surface that is configured to bear against a face of the user and an interior surface opposite the face contacting surface, the flange comprising an edge that at least partially defines an opening, a lip surface disposed at a lower portion of the flange and adapted to contact the face of the user in use at a location above a vermillion border and below nares of the user, a lateral surface disposed at an upper portion of the flange and adapted to extend over a bridge of the nose of the user, and left and right cheek surfaces disposed on the upper portion of the flange and extending between the lip surface and the lateral surface, the left and right cheek surfaces adapted to contact at least two of left and right medial cheek surfaces of the user and left and right lateral nose surfaces of the user; and

    a left thickened panel positioned along a left side of the upper portion of the flange, and a right thickened panel positioned along a right side of the upper portion of the flange, the left and right thickened panels being configured to provide additional pressure pressing the flange against lateral sides of the nose of the user in use;

    wherein each of the left and right thickened panels comprises a substantially trapezoidal pad projecting from the interior surface of the flange away from the face contacting surface, the left and right thickened panels defining locally thickened regions of the flange that are thicker than the remainder of the flange, wherein each of the first and second thickened panels are spaced from the thickened band, and wherein the edge of the opening forms an innermost side of the substantially trapezoidal pad.

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