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Breathing assistance apparatus

  • US 9,974,914 B2
  • Filed: 07/16/2014
  • Issued: 05/22/2018
  • Est. Priority Date: 02/23/2004
  • Status: Active Grant
First Claim
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1. A nasal cannula configured to deliver humidified gases to a user, the nasal cannula comprising:

  • a prong part comprising a prong part body having a first end with two openings, a second end with a single opening, and two prongs extending from the two openings, respectively and integrally formed with the first end and the second end, the two prongs spaced from each other and shaped to fit within nares of a user in use, the second end being disposed opposite the first end along a central axis extending through the first and second ends, the prong part body comprising an outer surface extending around the central axis and between the first and second ends, the outer surface having at least a first portion and a second portion, the first portion facing toward a user'"'"'s face in use and the second portion facing away from a user'"'"'s face in use, the first portion comprising a curved segment disposed between the first and second ends and curving inwardly toward an interior of the prong part body; and

    a body part having a first end and a second end, wherein the second end of the prong part body is configured to be connected to the first end of the body part, and the second end of the body part is configured to be coupled to a conduit configured to supply humidified gases to the nasal cannula, the body part further comprising an outer surface having at least a user-side portion facing toward a user'"'"'s face in use, the user-side portion comprising a curved part, curving inward toward an interior of the body part;

    wherein the two prongs are angled toward each other and toward the central axis, the two prongs having a first side adjacent the curved segment and a second side adjacent the second portion, the first sides of the two prongs being disposed further apart than the second sides of the two prongs.

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