US 12,076,487 B2
Seal-forming structure, positioning and stabilizing structure and diffuser vent for patient interface
Marvin Sugi Hartono, Singapore (SG); Michael Kenneth Truscott, Sydney (AU); Craig David Edwards, Sydney (AU); Chuan Foong Lee, Johor (MY); Min Li Tee, Singapore (SG); Shannon Day, Sydney (AU); Nigel Paul Greig, Sydney (AU); Christopher Daniel Parker, Sydney (AU); Angelene Marie Ozolins, Sydney (AU); Jessica Lea Dunn, Sydney (AU); Bishavjot Singh, Sydney (AU); Vinay Manjunath, Sydney (AU); Chee Keong Ong, Singapore (SG); and Lorenz Eberl, Sydney (AU)
Assigned to ResMed Pty Ltd, Bella Vista (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on Feb. 16, 2023, as Appl. No. 18/110,463.
Application 18/110,463 is a continuation of application No. 17/310,284, granted, now 11,628,265, previously published as PCT/IB2020/053311, filed on Apr. 7, 2020.
Claims priority of provisional application 62/830,745, filed on Apr. 8, 2019.
Claims priority of provisional application 62/830,764, filed on Apr. 8, 2019.
Prior Publication US 2023/0191064 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/06 (2006.01); A61M 16/10 (2006.01)
CPC A61M 16/0622 (2014.02) [A61M 16/0683 (2013.01); A61M 16/1065 (2014.02); A61M 2202/0225 (2013.01); A61M 2205/0216 (2013.01); A61M 2205/42 (2013.01); A61M 2210/0618 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A patient interface to deliver a flow of air at a positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least the entrance of a patient's nares while a patient is sleeping, to ameliorate sleep disordered breathing, the patient interface comprising:
a frame assembly including a main body and a pair of rigidizer arms connected to respective sides of the main body,
wherein each of the pair of rigidizer arms is configured to extend along respective sides of a patient's head,
wherein each of the pair of rigidizer arms is connected to respective sides of the main body by a respective one of a pair of flexible joints, and
wherein the main body includes a cushion connecting portion; and
a cushion assembly configured to removably and repeatably connect to the frame assembly,
wherein the frame assembly and the cushion assembly form at least part of a plenum chamber pressurizable to a therapeutic pressure,
wherein the cushion assembly comprises a one-piece construction including a seal-forming structure constructed and arranged to form a seal with a region of a patient's face and a frame connection structure constructed and arranged to removably and repeatably connect the cushion assembly to the frame assembly,
wherein the frame connection structure comprises a barbed end configured to protrude radially inwardly towards an interior of the cushion assembly that forms at least a portion of the plenum chamber,
wherein the frame connection structure is resiliently stretchable, the frame connection structure configured and arranged to be stretched radially outwardly to allow the barbed end to deflect radially outwardly and over the cushion connecting portion of the frame assembly, and the frame connection structure is configured and arranged to resilient return to a relatively non-stretched shape after the barbed end overcomes the cushion connecting portion to allow the barbed end to engage behind the cushion connecting portion when the cushion assembly is connected to the frame assembly; and
a positioning and stabilising structure to provide a force to hold the seal-forming structure in a therapeutically effective position on a patient's head, the positioning and stabilizing structure comprising two side strap portions configured to extend along respective sides of the patient's head,
wherein the two side strap portions are provided to respective ones of the pair of rigidizer arms of the frame assembly.