US 12,357,783 B2
Patient interface with movable frame
Amy Phan How Cheng, Singapore (SG); and Robin Yew, Singapore (SG)
Assigned to ResMed Pty Ltd, Bella Vista (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on May 22, 2023, as Appl. No. 18/321,322.
Application 18/321,322 is a continuation of application No. 17/993,514, filed on Nov. 23, 2022, granted, now 11,696,995.
Application 17/993,514 is a continuation of application No. 17/590,843, filed on Feb. 2, 2022, granted, now 11,559,648, issued on Jan. 24, 2023.
Application 17/590,843 is a continuation of application No. 16/339,168, granted, now 11,273,276, issued on Mar. 15, 2022, previously published as PCT/AU2017/050983, filed on Sep. 8, 2017.
Claims priority of provisional application 62/403,895, filed on Oct. 4, 2016.
Prior Publication US 2023/0310783 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/06 (2006.01); A61M 16/08 (2006.01); A61M 16/16 (2006.01)
CPC A61M 16/0616 (2014.02) [A61M 16/065 (2014.02); A61M 16/0666 (2013.01); A61M 16/0683 (2013.01); A61M 16/0816 (2013.01); A61M 16/16 (2013.01); A61M 2202/0225 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A patient interface comprising:
a plenum chamber pressurisable to a therapeutic pressure of at least 6 cmH2O above ambient air pressure by a flow of air, and the plenum chamber having an interior surface configured to be exposed to the therapeutic pressure during use and an exterior surface configured to be exposed to ambient air pressure during use;
a seal-forming structure connected to the plenum chamber and constructed and arranged to contact and seal against a region of the patient's face surrounding an entrance to the patient's airways such that the flow of air is delivered to at least the entrance to the patient's nares, the seal-forming structure being constructed and arranged to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use, and the seal-forming structure being configured to leave the patient's mouth uncovered during use;
a positioning and stabilising structure configured to hold the seal-forming structure in a therapeutically effective position on the patient's head, the positioning and stabilising structure comprising a tie, the tie being constructed and arranged so that at least a portion of the tie overlies a region of the patient's head superior to an otobasion superior on a corresponding side of the patient's head in use;
a frame pivotable relative to the plenum chamber in a plane parallel to the patient's sagittal plane, the frame further comprising a forehead support, a superior end of the forehead support further comprising a post, and the tie is constructed from a layer of loop material and includes a tab of hook material configured to be releasably connected to the layer of loop material to form a loop that is removably connected to the post;
an elbow assembly rotatable relative to the frame and having a swivel configured to be connected to an air circuit to provide a fluid connection between the plenum chamber and the air circuit for the flow of air, and the elbow assembly having a plurality of vent holes configured to allow a continuous flow of gases exhaled by the patient to pass from an interior of the plenum chamber to ambient during use, the vent holes being sized and shaped to maintain the therapeutic pressure in the plenum chamber during use; and
a spring constructed from silicone and joined to the frame, the spring contacting the exterior surface of the plenum chamber such that the spring is not exposed to the therapeutic pressure during use, and the spring being configured to resiliently limit pivoting of the frame toward the plenum chamber,
wherein the frame comprises a spring opening and the spring extends from a spring attachment structure, and
wherein the spring is joined to the frame at the spring opening by the spring attachment structure.