US 11,883,604 B2
Gas mixing system for medical ventilator
Neil Godara, Milton (CA); Matthew J. Phillips, Carlsbad, CA (US); Amand Kasimatis, Carlsbad, CA (US); Donald J. Novkov, Encinitas, CA (US); Patrick S. Ryan, Toronto (CA); Amanda Centazzo-Colella, Montreal (CA); Laurentiu Murtescu, Vaughan (CA); Amanda A. Hartley, Caledon (CA); Michael J. N. Matsumoto, Toronto (CA); Jacques L. Vassal, Montreal (CA); Danian Yang, Vaughan (CA); and Randy Yang, Richmond Hill (CA)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Apr. 9, 2021, as Appl. No. 17/226,752.
Claims priority of provisional application 63/079,518, filed on Sep. 17, 2020.
Claims priority of provisional application 63/008,508, filed on Apr. 10, 2020.
Prior Publication US 2021/0316105 A1, Oct. 14, 2021
Int. Cl. A61M 16/12 (2006.01); A61M 16/10 (2006.01); A61M 16/20 (2006.01); A61M 16/00 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/125 (2014.02) [A61M 16/0066 (2013.01); A61M 16/024 (2017.08); A61M 16/0816 (2013.01); A61M 16/1005 (2014.02); A61M 16/12 (2013.01); A61M 16/201 (2014.02); A61M 16/203 (2014.02); A61M 2016/0027 (2013.01); A61M 2016/0039 (2013.01); A61M 2016/1025 (2013.01); A61M 2202/0208 (2013.01); A61M 2205/502 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A medical ventilator system comprising:
a ventilator comprising a first environmental gas inlet, an inspiratory port, an expiratory port, and a blower, wherein the blower is located in a gas flow path between the first environmental gas inlet and the inspiratory port;
an oxygen regulator comprising an oxygen inlet, a second environmental gas inlet, a mixing valve, a plenum upstream of the mixing valve, a pressure sensor for measuring a pressure inside the plenum, and a mixed gas outlet, wherein the mixing valve combines oxygen from the oxygen inlet and gas from the second environmental gas inlet into a mixed gas provided to the mixed gas outlet; and
a fluidic coupling between the ventilator and the oxygen regulator for coupling the mixed gas outlet of the oxygen regulator to the first environmental gas inlet of the ventilator.