US 12,246,135 B2
Cough-assist systems with humidifier bypass
Shan Gaw, Seattle, WA (US); and Joseph Cipollone, Bothell, WA (US)
Assigned to Ventec Life Systems, Inc., Bothell, WA (US)
Filed by Ventec Life Systems, Inc., Bothell, WA (US)
Filed on May 1, 2023, as Appl. No. 18/310,473.
Application 18/310,473 is a continuation of application No. 16/993,113, filed on Aug. 13, 2020, granted, now 11,679,229.
Application 16/993,113 is a continuation of application No. 15/188,722, filed on Jun. 21, 2016, granted, now 10,773,049, issued on Sep. 15, 2020.
Prior Publication US 2023/0414898 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/20 (2006.01); A61M 16/00 (2006.01); A61M 16/04 (2006.01); A61M 16/08 (2006.01); A61M 16/10 (2006.01); A61M 16/14 (2006.01); A61M 16/16 (2006.01)
CPC A61M 16/208 (2013.01) [A61M 16/0006 (2014.02); A61M 16/0009 (2014.02); A61M 16/0066 (2013.01); A61M 16/022 (2017.08); A61M 16/0463 (2013.01); A61M 16/0875 (2013.01); A61M 16/109 (2014.02); A61M 16/16 (2013.01); A61M 16/1055 (2013.01); A61M 16/14 (2013.01); A61M 2202/0208 (2013.01); A61M 2205/502 (2013.01); A61M 2205/8206 (2013.01)] 23 Claims
OG exemplary drawing
 
7. A humidifier assembly, comprising:
a chamber configured to retain liquid therein;
a heater configured to deliver heat to a liquid within the chamber;
a first one-way valve;
a second one-way valve;
a first flow path configured to receive a first gas from a respiratory device and direct the first gas through the first one-way valve, the first one-way valve located between the respiratory device and the chamber, through the chamber and toward a patient circuit, wherein the second one-way valve blocks the first gas from bypassing the chamber and from entering a bypass conduit located between the patient interface and the respiratory device; and
a second flow path configured to receive a second gas from the patient circuit and direct the second gas through the second one-way valve and the bypass conduit and toward the respiratory device without passing through the chamber when the humidifier assembly is fluidly coupled to the respiratory device and the patient circuit.