US 11,679,221 B2
Respiratory gas humidifier
Igor Olegovich Yatsevich, Auckland (NZ); Andrew John Partington, Auckland (NZ); and Nordyn Alami, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Jun. 7, 2021, as Appl. No. 17/340,989.
Application 17/340,989 is a continuation of application No. 16/835,832, filed on Mar. 31, 2020, granted, now 11,058,843.
Application 16/835,832 is a continuation of application No. 16/173,863, filed on Oct. 29, 2018, granted, now 10,639,446, issued on May 5, 2020.
Application 16/173,863 is a continuation of application No. 15/592,639, filed on May 11, 2017, granted, now 10,130,784, issued on Nov. 20, 2018.
Application 15/592,639 is a continuation of application No. 14/845,042, filed on Sep. 3, 2015, granted, now 9,649,468, issued on May 16, 2017.
Claims priority of provisional application 62/045,460, filed on Sep. 3, 2014.
Prior Publication US 2022/0088341 A1, Mar. 24, 2022
Int. Cl. B01F 23/21 (2022.01); A61M 16/16 (2006.01); F24F 3/14 (2006.01); A61M 16/08 (2006.01); A61M 16/10 (2006.01); B01F 35/90 (2022.01); A61M 16/00 (2006.01); A61M 16/20 (2006.01); B01F 101/55 (2022.01)
CPC A61M 16/0808 (2013.01) [A61M 16/0066 (2013.01); A61M 16/0875 (2013.01); A61M 16/109 (2014.02); A61M 16/1085 (2014.02); A61M 16/1095 (2014.02); A61M 16/16 (2013.01); A61M 16/161 (2014.02); B01F 23/21 (2022.01); B01F 35/90 (2022.01); F24F 3/14 (2013.01); A61M 16/024 (2017.08); A61M 16/202 (2014.02); A61M 2016/003 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0039 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3653 (2013.01); A61M 2205/8206 (2013.01); A61M 2230/04 (2013.01); A61M 2230/10 (2013.01); A61M 2230/201 (2013.01); A61M 2230/202 (2013.01); A61M 2230/205 (2013.01); A61M 2230/432 (2013.01); A61M 2230/435 (2013.01); B01F 2035/99 (2022.01); B01F 2101/55 (2022.01)] 23 Claims
OG exemplary drawing
 
1. A gas humidifier, comprising:
a reservoir;
a lid for engaging the reservoir, and
a gas channel positioned within the lid, the gas channel extending between an inlet and an outlet, the gas channel comprising:
a flow adjusting region comprising a first portion with a decreasing cross-section and a second portion with an increasing cross-section,
a first aperture,
a fluid conduit extending from the first aperture and into the reservoir, wherein the fluid conduit is configured to allow fluid to be drawn from the reservoir and into the gas channel,
a second aperture configured to collect excess fluid in the gas channel, the second aperture positioned downstream of the flow adjusting region,
a heater positioned on the second portion of the flow adjusting region, and
wherein the gas channel has a rectangular cross-section.