US 11,738,166 B2
Humidifier tub for CPAP device
Ian Malcolm Smith, Sydney (AU); William Bonilla, Melbourne (AU); and Richard Llewelyn Jones, Sydney (AU)
Assigned to ResMed Pty Ltd, Bella Vista (AU)
Filed by ResMed Pty Ltd
Filed on Apr. 22, 2020, as Appl. No. 16/855,180.
Application 16/855,180 is a continuation of application No. 15/332,037, filed on Oct. 24, 2016, granted, now 10,661,043.
Application 15/332,037 is a continuation of application No. 11/988,718, granted, now 9,707,370, issued on Jul. 18, 2017, previously published as PCT/AU2006/001171, filed on Aug. 15, 2006.
Claims priority of provisional application 60/707,949, filed on Aug. 15, 2005.
Prior Publication US 2020/0246576 A1, Aug. 6, 2020
Int. Cl. A61M 16/00 (2006.01); A61M 16/16 (2006.01); A61M 16/10 (2006.01); A61M 16/06 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/16 (2013.01) [A61M 16/0066 (2013.01); A61M 16/0666 (2013.01); A61M 16/0875 (2013.01); A61M 16/109 (2014.02); A61M 2206/14 (2013.01); A61M 2206/16 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A humidifier configured to humidify a flow of pressurized respiratory gas, the humidifier comprising:
a humidifier tub including an air inlet opening and an air outlet opening that is coplanar to the air inlet opening; and
a base plate provided to a bottom of the humidifier tub, the base plate and humidifier tub defining a water chamber adapted to receive a volume of water,
wherein the humidifier tub includes a guidance structure adapted to direct the pressurized respiratory gas entering the humidifier tub via the air inlet downwardly within the humidifier tub before exiting through the air outlet opening,
wherein the guidance structure comprises a barrier between in the air inlet opening and the air outlet opening to prevent the pressurized respiratory gas entering through the air inlet opening from short-circuiting directly to the air outlet opening, and
wherein the barrier comprises a wall that extends downwardly from an upper surface of the humidifier tub.