US 11,717,636 B2
Anesthesia vaporizer system having a variable volume reservoir
Joseph James Lacey, Madison, WI (US); Brady Weigel, Madison, WI (US); and Thomas Bender, II, Madison, WI (US)
Assigned to GE PRECISION HEALTHCARE LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on Oct. 1, 2019, as Appl. No. 16/589,976.
Prior Publication US 2021/0093826 A1, Apr. 1, 2021
Int. Cl. A61M 16/18 (2006.01); A61M 16/01 (2006.01); A61M 16/10 (2006.01)
CPC A61M 16/183 (2013.01) [A61M 16/01 (2013.01); A61M 16/104 (2013.01); A61M 16/1005 (2014.02); A61M 2202/0208 (2013.01); A61M 2202/0283 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An anesthesia vaporizer system comprising:
a sump chamber;
a variable volume reservoir within the sump chamber, wherein the variable volume reservoir is configured to contain liquid anesthetic agent;
an anesthetic vaporizer that vaporizes the liquid anesthetic agent for delivery to a patient;
a gas mixer configured to combine gasses from multiple gas sources;
a pressurized gas source connected to the sump chamber and the gas mixer, the pressurized gas source being configured to provide a constant pressure within the sump chamber to compress the variable volume reservoir and force the liquid anesthetic agent through the anesthetic vaporizer; and
a dual outlet valve having an inlet connected to the pressurized gas source, a first outlet connected to the gas mixer, and a second outlet connected to the sump chamber, wherein the dual outlet valve controls flow of gas to the gas mixer and the sump chamber.