US 11,986,595 B2
Respiratory mask system
Mark Arvind McLaren, Auckland (NZ); Brett John Huddart, Auckland (NZ); Jeroen Hammer, Auckland (NZ); Matthew Robert Geoff Slight, Auckland (NZ); Vitaly Kapelevich, Auckland (NZ); and David Monroy Felix, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Appl. No. 16/956,471
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
PCT Filed Dec. 20, 2018, PCT No. PCT/IB2018/060394
§ 371(c)(1), (2) Date Jun. 19, 2020,
PCT Pub. No. WO2019/123348, PCT Pub. Date Jun. 27, 2019.
Claims priority of provisional application 62/609,162, filed on Dec. 21, 2017.
Prior Publication US 2020/0338294 A1, Oct. 29, 2020
Int. Cl. A61M 16/06 (2006.01); A61M 16/08 (2006.01); A62B 9/04 (2006.01); A62B 18/02 (2006.01); A62B 18/08 (2006.01)
CPC A61M 16/0683 (2013.01) [A61M 16/0616 (2014.02); A61M 16/0816 (2013.01); A62B 9/04 (2013.01); A62B 18/025 (2013.01); A62B 18/084 (2013.01); A61M 16/0622 (2014.02); A61M 2205/0216 (2013.01); A61M 2205/0272 (2013.01); A61M 2210/0618 (2013.01); A61M 2210/0625 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A respiratory mask assembly comprising:
a mask interface comprising:
a housing;
a seal coupled to the housing, the seal configured to seal on a user's face in use; and
a removable frame comprising two upper headgear connector arms and two lower headgear connector arms, the removable frame being generally quadrilateral in shape and comprises a front surface and a rear surface, each having an upper edge, a lower edge, and side edges, and wherein the two lower headgear connector arms extend from the rear surface, at, adjacent or spaced from the lower edge of the front surface; and
a headgear assembly coupled to the mask interface at four locations, the headgear assembly comprising:
at least two directional locks, one of the at least two directional locks disposed on each side of the user's face in use;
a headgear comprising:
an upper side strap configured to be coupled, permanently or removably, to each of the two upper headgear connector arms;
a first filament extending within the upper side strap;
a lower side strap configured to be coupled, permanently or removably, to each of the two lower headgear connector arms; and
a second filament extending within the lower side strap;
each of the at least two directional locks comprising one or more lock members, the one or more lock members configured to frictionally engage a corresponding one of the first filament or the second filament during elongation of the headgear but allow reduced friction or relatively friction free movement during retraction of the headgear.