US 12,156,970 B2
Breathing assistance apparatus with a manifold to add auxiliary gases to ambient gases
Martin Paul Friedrich Kramer, Auckland (NZ); Kevin Peter O'Donnell, Auckland (NZ); Christopher Simon James Quill, Auckland (NZ); and Matthew Jon Payton, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Aug. 8, 2022, as Appl. No. 17/818,301.
Application 17/818,301 is a continuation of application No. 17/645,938, filed on Dec. 23, 2021.
Application 17/645,938 is a continuation of application No. 16/905,244, filed on Jun. 18, 2020.
Application 16/905,244 is a continuation of application No. 15/601,395, filed on May 22, 2017, granted, now 10,722,675, issued on Jul. 28, 2020.
Application 15/601,395 is a continuation of application No. 14/286,590, filed on May 23, 2014, granted, now 9,656,039, issued on May 23, 2017.
Application 14/286,590 is a continuation of application No. 11/916,503, granted, now 8,733,353, issued on May 27, 2014, previously published as PCT/NZ2006/000166, filed on Jun. 29, 2006.
Claims priority of application No. 541083 (NZ), filed on Jul. 1, 2005.
Prior Publication US 2022/0370753 A1, Nov. 24, 2022
Int. Cl. A61M 16/10 (2006.01); A61M 16/00 (2006.01); A61M 16/12 (2006.01); A61M 16/16 (2006.01); A61M 16/06 (2006.01)
CPC A61M 16/1005 (2014.02) [A61M 16/0066 (2013.01); A61M 16/024 (2017.08); A61M 16/10 (2013.01); A61M 16/105 (2013.01); A61M 16/1075 (2013.01); A61M 16/109 (2014.02); A61M 16/1095 (2014.02); A61M 16/12 (2013.01); A61M 16/16 (2013.01); A61M 16/0666 (2013.01); A61M 16/101 (2014.02); A61M 16/107 (2014.02)] 12 Claims
OG exemplary drawing
 
1. A breathing assistance apparatus, comprising:
a gases supply having an inlet and configured to provide a flow of gases;
a humidifier having a humidification chamber and a heater plate at a base of the humidification chamber, the gases supply providing the flow of gases to the humidifier;
a housing in which the gases supply and the humidifier are combined; and
a protruding manifold on or about, and connected to, the inlet and separate from a patient interface, the protruding manifold comprising:
an auxiliary inlet port extending from the side of the protruding manifold and connectable to an auxiliary gases supply, and
at least one aperture configured to contain a filter and allow ambient gases to be drawn into the inlet through the protruding manifold and the filter upstream from the gases supply;
wherein the protruding manifold enables auxiliary gases to be added to the ambient gases upstream from the gases supply at the inlet such that both auxiliary and ambient gases are drawn through the filter; and
wherein the at least one aperture is configured to take in air when the gases supply is supplying gases, and is configured to allow auxiliary gases to spill through the filter to ambient when the gases supply is not supplying gases.