US 11,833,302 B2
Anesthesia vaporizer reservoir and system
Thomas Bender, II, Madison, WI (US); Joseph Lacey, Waukesha, WI (US); Russell Kuzelka, Madison, WI (US); and David Wahl, Madison, WI (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jun. 25, 2021, as Appl. No. 17/358,846.
Application 17/358,846 is a continuation of application No. 15/793,740, filed on Oct. 25, 2017, granted, now 11,077,268.
Prior Publication US 2021/0322694 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/01 (2006.01); A61M 16/00 (2006.01); A61M 16/18 (2006.01); A61M 16/10 (2006.01)
CPC A61M 16/01 (2013.01) [A61M 16/0057 (2013.01); A61M 16/0093 (2014.02); A61M 16/183 (2013.01); A61M 16/18 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/1035 (2013.01); A61M 2205/07 (2013.01); A61M 2205/10 (2013.01); A61M 2205/106 (2013.01); A61M 2205/14 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3341 (2013.01); A61M 2205/3386 (2013.01); A61M 2205/3569 (2013.01); A61M 2205/3592 (2013.01); A61M 2205/502 (2013.01); A61M 2205/581 (2013.01); A61M 2205/583 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An anesthesia vaporizer system comprising:
a vaporizer reservoir forming a sump chamber that contains liquid anesthetic agent and a fill chamber isolated from the sump chamber configured to receive liquid anesthetic agent from a refill container;
a sump piston in the sump chamber configured to maintain an unchanging force on the liquid anesthetic agent in the sump chamber;
a transfer valve configured to permit the liquid anesthetic agent to flow from the fill chamber to the sump chamber; and
an outlet port that delivers the liquid anesthetic agent from the sump chamber to a vaporizing system that vaporizes the liquid anesthetic agent for delivery to a patient.