Patent ID: 11857774
Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. An air extraction device for removing air from intravenous (IV) tubing, the device comprising:
a chamber;
a fluid inlet tube extending into the chamber to convey fluid from intravenous tubing into the chamber;
a fluid outlet tube extending into the chamber to convey the fluid from the chamber to intravenous tubing for supplying to a patient;
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;
an air reservoir to collect air extracted from the fluid and provide a volume measure of the air received 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 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.