Breathing assistance apparatus

  • US 8,443,807 B2
  • Filed: 07/13/2007
  • Issued: 05/21/2013
  • Est. Priority Date: 07/14/2006
  • Status: Active Grant
First Claim
Patent Images

1. A patient interface comprising:

  • a mask assembly having;

    a mask body including two nasal pillows extending from it, which in use rest in a substantially sealed manner against the nares of a user, the mask body sized and shaped to leave the mouth of the user uncovered by the mask body when in use;

    a ring engaged with the mask body;

    a plane substantially bisecting the ring, each of the two nasal pillows positioned on opposite sides of the plane;

    an elbow rotatably engaged with the ring, the ring forming a socket into which a portion of the elbow fits to facilitate the rotatable engagement between the elbow and the ring, the elbow comprising a plurality of vent holes; and

    a tube or conduit extending from the elbow; and

    a headgear assembly having;

    two side straps that pass down the cheeks of the user to secure the mask body to a face of the user;

    a top strap including a buckle configured to facilitate length adjustment of the top strap; and

    a back strap adjustably connected to at least one of the top strap and the two side straps;

    wherein the two side straps are configured to connect and disconnect with the mask assembly while the elbow remains rotatably engaged with the ring and the ring remains engaged with the mask body wherein the mask assembly is configured to connect to only the two side straps; and

    wherein the top strap connects only with one or more of the side straps and the back strap.

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