US 12,420,047 B2
Patient interface device
Liam Holley, Sydney (AU); and Emma Anne Connell, Sydney (AU)
Assigned to ResMed Pty Ltd, Bella Vista (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on Oct. 3, 2022, as Appl. No. 17/937,741.
Application 17/937,741 is a continuation of application No. 16/991,686, filed on Aug. 12, 2020, granted, now 11,992,617.
Application 16/991,686 is a continuation of application No. 15/305,466, granted, now 10,792,450, issued on Oct. 6, 2020, previously published as PCT/AU2015/050191, filed on Apr. 23, 2015.
Claims priority of application No. 2014901476 (AU), filed on Apr. 23, 2014.
Prior Publication US 2023/0039769 A1, Feb. 9, 2023
Int. Cl. A61M 16/06 (2006.01); A61M 16/22 (2006.01); A61M 16/00 (2006.01); A61M 16/08 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01)
CPC A61M 16/0605 (2014.02) [A61M 16/06 (2013.01); A61M 16/22 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0039 (2013.01); A61M 16/0063 (2014.02); A61M 16/0066 (2013.01); A61M 16/0075 (2013.01); A61M 16/0633 (2014.02); A61M 16/0683 (2013.01); A61M 16/0866 (2014.02); A61M 16/1045 (2013.01); A61M 16/107 (2014.02); A61M 16/109 (2014.02); A61M 16/16 (2013.01); A61M 2205/02 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3389 (2013.01); A61M 2205/42 (2013.01); A61M 2206/11 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least an entrance of the patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, said patient interface comprising:
a seal-forming structure constructed from silicone and configured to contact and seal against the patient's face at an area surrounding the entrance to the patient's airways;
a plenum chamber configured to be pressurised at a pressure above ambient pressure in use, the seal-forming structure and the plenum chamber forming, at least in part, a breathing chamber when the seal-forming structure is in sealing contact with the area surrounding the entrance to the patient's airways, and a connection port positioned on the plenum chamber and configured to deliver the flow of air to the breathing chamber;
a positioning and stabilising structure comprising a strap configured to maintain the seal-forming structure in sealing contact with the area surrounding the entrance to the patient's airways;
a vent configured to wash out gas from the breathing chamber, the vent comprising a plurality of holes; and
a device having a plurality of apertures, the device being positioned within the breathing chamber such that, in use, the flow of air entering the breathing chamber passes through the plurality of apertures before reaching the entrance to a patient's airways, the device being shaped, dimensioned, and positioned within the breathing chamber such that, in use, a superior side of the device is spaced inferior to an inferior side of the patient's nose, each of the apertures forming a path through the device, and the device being constructed from a material that is resistant to absorption of moisture.