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Patient interface and aspects thereof

  • US 10,413,694 B2
  • Filed: 07/31/2017
  • Issued: 09/17/2019
  • Est. Priority Date: 05/12/2008
  • Status: Active Grant
First Claim
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1. A patient interface comprising:

  • a mask assembly comprising a seal and a frame;

    the seal comprising a pair of protruding nostril locators, each nostril locator including an outlet aperture configured to seal against at least a nostril of a user, the seal also comprising an oval air supply aperture with a larger dimension of the oval air supply aperture extending in a lateral direction, and a rigid loop member extending around the oval air supply aperture and at least first and second rigid barbs protruding from the rigid loop member at locations adjacent to the oval air supply aperture;

    the frame comprising a distal side comprising a connector connected to a flexible tube, the flexible tube comprising a supply connector located at a distal end of the flexible tube, the supply connector comprising a swivel,the frame further comprising first and second lateral sides and first and second arms extending from the first and second lateral sides, respectively, the frame also comprising first and second recesses clipped into engagement with the first and second rigid barbs holding the seal into sealing engagement with a proximal side of the frame;

    a headstrap comprising a knitted tubular material, a first headstrap end portion and a second headstrap end portion, the first and second headstrap end portions being removably engageable with the first and second arms; and

    an oval arrangement of a plurality of bias flow holes disposed on the distal side of the frame, and a gas inlet disposed in a center of the oval arrangement of the plurality of bias flow holes.

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