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Respiratory mask

  • US 10,265,492 B2
  • Filed: 04/29/2011
  • Issued: 04/23/2019
  • Est. Priority Date: 04/30/2010
  • Status: Active Grant
First Claim
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1. A patient interface system for delivering breathable gas to a patient, comprising:

  • a flexible patient interface structure configured to interface with and deliver air to a nose of the patient, the patient interface structure comprising cylindrical protrusions extending from respective opposite sides of the patient interface structure, the cylindrical protrusions being dimensioned and configured to be adjacent the patient'"'"'s nares when the flexible patient interface structure is engaged with the patient'"'"'s face;

    a frame configured to support the patient interface structure, the frame comprising a pair of cylinders, each cylinder having an inner circumferential surface configured to receive a respective cylindrical protrusion of the patient interface structure;

    headgear arranged for releasable attachment to the frame; and

    an air delivery tube connected to either one of the cylindrical protrusions, the air delivery tube being configured to be assembled to the cylindrical protrusion in an assembly direction,wherein each of the cylindrical protrusions of the flexible patient interface structure comprises a shoulder having a diameter larger than a diameter of each of said cylinders of the frame, each of the shoulders being configured to prevent movement of the respective cylindrical protrusion relative to the corresponding cylinder in the assembly direction of the air delivery tube when the air delivery tube is assembled to the respective cylindrical protrusion.

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