US 12,343,476 B2
Respiratory mask sealing interface
Alastair Edwin McAuley, Auckland (NZ); Gregory James Olsen, Auckland (NZ); and Matthew Roger Stephenson, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Oct. 20, 2021, as Appl. No. 17/506,623.
Application 17/506,623 is a continuation of application No. 17/061,485, filed on Oct. 1, 2020, granted, now 11,179,533.
Application 17/061,485 is a continuation of application No. 16/009,055, filed on Jun. 14, 2018, granted, now 10,828,447, issued on Nov. 10, 2020.
Application 16/009,055 is a continuation of application No. 14/740,111, filed on Jun. 15, 2015, granted, now 10,004,864, issued on Jun. 26, 2018.
Application 14/740,111 is a continuation of application No. 13/140,385, granted, now 9,056,178, issued on Jun. 16, 2015, previously published as PCT/NZ2009/000289, filed on Dec. 16, 2009.
Claims priority of provisional application 61/138,194, filed on Dec. 17, 2008.
Prior Publication US 2022/0040430 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/06 (2006.01)
CPC A61M 16/0622 (2014.02) [A61M 16/06 (2013.01); A61M 16/0616 (2014.02); A61M 16/0633 (2014.02)] 14 Claims
OG exemplary drawing
 
1. A sealing interface for use as part of an apparatus configured for supplying a flow of respiratory gases to a user, comprising:
an inner cushion;
an outer sheath integrally formed with the inner cushion and adapted to contact facial contours of the user in use, each of the inner cushion and the outer sheath having a nasal bridge region, left and right cheek regions and either one of an upper lip region or a chin region, the nasal bridge region being configured to be aligned with a corresponding user nasal bridge region, the left and right cheek regions being configured to be aligned with left and right user cheek regions, and the either one of the upper lip region or the chin region being configured to be aligned with either a user upper lip region or a user chin region of the user in use, respectively;
wherein the nasal bridge region of the inner cushion is configured to flex relative to the inner cushion left and right cheek regions, the nasal bridge region being coupled to the left and right cheek regions by left and right narrow necked sections formed between the nasal bridge region and a corresponding one of the left and right cheek regions, wherein each of the left and right narrow necked sections comprise a plurality of fingers; and
wherein the outer sheath is configured to be supported by the plurality of fingers at the left and right narrow necked sections.