US 12,220,532 B2
Patient interface and aspects thereof
Jonathan Mark Downey, Auckland (NZ); Thomas Mark Richardson, Auckland (NZ); Craig Robert Prentice, Auckland (NZ); and Richard John Boyes, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Dec. 1, 2021, as Appl. No. 17/539,721.
Application 17/539,721 is a continuation of application No. 16/094,723, granted, now 11,229,761, previously published as PCT/IB2017/052292, filed on Apr. 21, 2017.
Claims priority of provisional application 62/326,636, filed on Apr. 22, 2016.
Prior Publication US 2022/0249793 A1, Aug. 11, 2022
Int. Cl. A61M 16/06 (2006.01)
CPC A61M 16/0611 (2014.02) [A61M 16/0666 (2013.01); A61M 16/0683 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A nasal seal comprising:
a sealing portion including:
a first nostril prong,
a second nostril prong, and
a sealing surface;
an inlet orifice;
a bellows structure extending between the inlet orifice and the sealing portion, the bellows structure comprising:
a bellows portion; and
a lower bellows portion extending between the inlet orifice and the bellows portion, wherein the lower bellows portion defines a radial dimension in a direction radially outward from the inlet orifice to a maximal extent of the lower bellows portion
wherein the radial dimension of a side of the lower bellows portion located towards a patient is larger than the radial dimension of a side of the lower bellows portion located away from the patient; and
wherein the bellows structure extends circumferentially around the sealing portion.