US 11,833,277 B2
Mask system with snap-fit shroud
Eva Ng, Sydney (AU); David James Lockwood, Gosford (AU); Jamie Graeme Wehbeh, Sydney (AU); Zoran Valcic, Sydney (AU); Errol Savio Alex D'Souza, Sydney (AU); Matthew Eves, Sydney (AU); and Mahsita Sari, Sydney (AU)
Assigned to ResMed Pty Ltd, Bella Vista (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on Nov. 2, 2022, as Appl. No. 17/979,614.
Application 17/979,614 is a continuation of application No. 17/847,344, filed on Jun. 23, 2022, granted, now 11,529,488.
Application 17/847,344 is a continuation of application No. 17/474,357, filed on Sep. 14, 2021, granted, now 11,395,893, issued on Jul. 26, 2022.
Application 17/474,357 is a continuation of application No. 17/361,420, filed on Jun. 29, 2021.
Application 17/361,420 is a continuation of application No. 15/964,887, filed on Apr. 27, 2018, granted, now 11,077,274, issued on Aug. 3, 2021.
Application 15/964,887 is a continuation of application No. 15/724,732, filed on Oct. 4, 2017, granted, now 9,962,511, issued on May 8, 2018.
Application 15/724,732 is a continuation of application No. 15/682,117, filed on Aug. 21, 2017, granted, now 9,950,131, issued on Apr. 24, 2018.
Application 15/682,117 is a continuation of application No. 15/440,972, filed on Feb. 23, 2017, granted, now 9,770,568, issued on Sep. 26, 2017.
Application 15/440,972 is a continuation of application No. 13/964,280, filed on Aug. 12, 2013, granted, now 9,757,533, issued on Sep. 12, 2017.
Application 13/964,280 is a continuation of application No. 13/745,077, filed on Jan. 18, 2013, granted, now 8,528,561, issued on Sep. 10, 2013.
Application 13/745,077 is a continuation of application No. 12/736,024, granted, now 8,550,084, issued on Oct. 8, 2013, previously published as PCT/AU2009/000241, filed on Feb. 27, 2009.
Claims priority of provisional application 61/136,617, filed on Sep. 19, 2008.
Claims priority of provisional application 61/074,893, filed on Jun. 23, 2008.
Claims priority of provisional application 61/064,406, filed on Mar. 4, 2008.
Prior Publication US 2023/0046684 A1, Feb. 16, 2023
Int. Cl. A61M 16/06 (2006.01); A61M 16/20 (2006.01); A61M 16/08 (2006.01); A61M 16/00 (2006.01)
CPC A61M 16/0622 (2014.02) [A61M 16/0057 (2013.01); A61M 16/0066 (2013.01); A61M 16/06 (2013.01); A61M 16/0611 (2014.02); A61M 16/0616 (2014.02); A61M 16/0683 (2013.01); A61M 16/0694 (2014.02); A61M 16/0816 (2013.01); A61M 16/0858 (2014.02); A61M 16/0875 (2013.01); A61M 16/20 (2013.01); A61M 16/0633 (2014.02); A61M 16/0825 (2014.02); A61M 16/0841 (2014.02); A61M 2016/0661 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A mask assembly for treating a patient with a respiratory disorder, comprising:
a cushion module at least partly forming a breathing chamber when the cushion module contacts the patient's face in use, the cushion module having a frame and a cushion, the frame being more rigid than the cushion and the cushion being configured to form a seal with a patient's face in use, the frame having a frame opening;
headgear configured to hold the cushion module in a sealing position in order to enable a supply of breathable gas at positive pressure to be delivered to the patient's airways, the headgear including a pair of upper strap portions configured to engage the patient's head superior to the patient's ears and a pair of lower strap portions configured to engage the patient's head below the patient's ears,
a shroud module constructed from a material more rigid than the cushion, the shroud module including a pair of lower headgear connector portions configured to connect to the pair of lower straps portions and an opening configured to align with the frame opening during use;
a clip-on upper headgear connector, the clip-on upper headgear connector including a pair of arms each including a slot to receive one of the upper strap portions and a connecting portion that connects the pair of arms to one another, the connecting portion including a clip structure on each of a left and right side of said connecting portion; and
an elbow-shaped conduit constructed from a more rigid material than the cushion, the elbow-shaped conduit including a first end removably snap-fit to the frame at the frame opening and a second end having a tube configured to connect to an air delivery tube to deliver pressurized breathable gas to the patient, wherein the elbow-shaped conduit redirects a flow of air from a first direction to a second direction that is angled relative to the first direction, wherein the elbow-shaped conduit includes an anti-asphyxia valve between the first end and the second end,
wherein the mask assembly does not include a forehead support.