	US 12,226,582 B2
	Headgear for patient interface
Mark Arvind McLaren, Auckland (NZ); and Jeroen Hammer, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Sep. 27, 2023, as Appl. No. 18/476,165.
Application 18/476,165 is a continuation of application No. 16/509,958, filed on Jul. 12, 2019, granted, now 11,806,452.
Application 16/509,958 is a continuation of application No. 15/047,436, filed on Feb. 18, 2016, abandoned.
Application 15/047,436 is a continuation of application No. 14/420,284, granted, now 10,080,856, issued on Sep. 25, 2018, previously published as PCT/NZ2013/000139, filed on Aug. 8, 2013.
Claims priority of provisional application 61/681,024, filed on Aug. 8, 2012.
Prior Publication US 2024/0123175 A1, Apr. 18, 2024
Int. Cl. A61M 16/06 (2006.01); A62B 18/08 (2006.01)

CPC A61M 16/0683 (2013.01) [A61M 16/06 (2013.01); A61M 16/0605 (2014.02); A61M 2016/0661 (2013.01); A61M 2205/0216 (2013.01); A61M 2205/0272 (2013.01); A62B 18/084 (2013.01)]

8 Claims

1. An interface assembly for use in providing a breathing treatment, the interface assembly comprising:

a mask comprising a frame and a seal supported by the frame;

a headgear connected to the mask; and

a break-fit assembly configured to selectively lengthen a loop defined by the mask and the headgear when a predetermined force has been exceeded and return the loop to a use length when the predetermined force has not been exceeded;

wherein the break-fit assembly comprises a magnetic coupling that resists elongation from a first length to a second length until a force is applied that exceeds a predetermined force, wherein the magnetic coupling comprises two magnetic members, wherein a flexible sheath envelopes the two magnetic members, and wherein stretching of the flexible sheath upon movement of the two magnetic members away from each other establishes a restoration force that acts to return the two magnetic members toward each other for reconnection.