US 11,857,774 B2
Intravenous tubing venting assembly
Andrey Suprun, Gainesville, FL (US); and David Hutchinson, Gainesville, FL (US)
Assigned to UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATED, Gainesville, FL (US)
Filed by UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC., Gainesville, FL (US)
Filed on Nov. 3, 2021, as Appl. No. 17/453,420.
Claims priority of provisional application 63/110,499, filed on Nov. 6, 2020.
Prior Publication US 2022/0143327 A1, May 12, 2022
Int. Cl. A61M 5/36 (2006.01); A61M 5/168 (2006.01)
CPC A61M 5/36 (2013.01) [A61M 5/16813 (2013.01); A61M 5/16881 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An air extraction device for removing air from intra-venous (IV) tubing, the device comprising:
a chamber;
a fluid inlet tube to convey fluid from intravenous tubing into the chamber;
a fluid outlet tube to convey fluid from the chamber to intravenous tubing for supplying to a patient; wherein the fluid inlet tube extends further into the chamber than the fluid outlet tube;
a top portion of the chamber;
a branch tube extending from the top portion of the chamber, wherein the branch tube receives air from the fluid in the chamber; and
a ball received within the chamber, wherein the ball is configured to rise with an influx of fluid to the chamber from the fluid inlet tube and to seal off the branch tube from the chamber in response to a level of the fluid level rising to the top portion of the chamber, wherein the ball within the chamber functions as a check valve to prevent fluid flow through the branch tube and to allow air to flow through the branch tube.