Nasal cannula, conduit and securement system

A nasal cannula system comprising:

• a first nasal prong and a second nasal prong, each of the first nasal prong and a second nasal prong configured to be inserted into a respective nare of a user,
• the first nasal prong being connected to a first gases delivery tube and the second nasal prong being connected to a second gases delivery tube;
• and
• a first backing comprising a first front surface configured to support the first gases delivery tube and a second backing comprising a second front surface configured to support the second gases delivery tube, each of the first backing and second backing including a rear surface configured to face a face of the user;
• and
• each of the first backing and the second backing comprising an independent securement system configured to be independently connected to the respective backing, each securement system comprising:
• a two-part releasable attachment system comprising:
• a first part comprising a substrate, the substrate comprising regions at least partially divided by at least one slit or slot, and
• a second part complimentary to the first part;
• and
• a dermal patch having a user side and an interface side,
• the user side of the dermal patch configured to be attached to a skin of the user,
• the interface side of the dermal patch being provided with the first part of the two-part releasable attachment system,
• wherein the interface side of the dermal patch partially overlaps with the substrate such that a zone around a periphery of the interface side of the dermal patch between an edge of the dermal patch and an edge of the substrate is exposed, the zone being non-uniform in width, the zone being broader at a side of the substrate that is configured to be placed further from a nose of a user;
• and
• each of the first backing and the second backing further comprising a user interface patch having a user side configured to attach to the second part of the two-part releasable attachment system,
• wherein the user interface patch is either configured to attach or connect to the rear surface of the respective backing or is integral with the rear surface of the respective backing.