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US 11,229,761 B2Granted
Patient interface and aspects thereof
AssigneeFisher & Paykel Healthcare Limited
InventorsJonathan Mark Downey, Thomas Mark Richardson, Craig Robert Prentice, Richard John Boyes
Life of this patent
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Abstract
A patient interface can have a frame supporting a sealing member. Various features of the sealing member can improve comfort and sealing performance in the context of forming seals with the nares of a user, as well as contact with other facial surfaces. The sealing member can include convex portions, concave portions and thickness variations for providing various sealing, comfort, and deformability effects.
Claims22
A nasal seal comprising:
- a seal body formed of a soft flexible material and defining an inner cavity and a supply opening for supply of breathing gases from the inner cavity to the patient, the seal body comprising:
- a first portion that comprises the supply opening;
- a second portion that comprises a first nostril prong and a second nostril prong;
- a thickened region extending across a front of the first nostril prong and the second nostril prong;
- a bellows structure located between the first portion and the second portion, wherein the bellows structure is configured to deform to vary a distance between the first portion and the second portion;
- and
- wherein an outer perimeter of the first portion is larger than a perimeter of the second portion;
- and
- wherein a total width of the first portion is at least about 90 percent of a total width of the second portion.
6 more elements
Dependencies are inferred from the claim text.