ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,443, issued on Aug. 4, was assigned to CAREFUSION 303 INC. (San Diego).
"Air detection method for pumps with volume measurement" was invented by Frank Cai (Ontario, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods of air detection in pumps are described herein. In certain embodiments, a pump for detecting air includes a plunger, a plunger air detection module, a camshaft, and a first biasing member. The plunger is movable to selectively engage a tubing segment with a fluid. The plunger air detection module is disposed within the plunger. The camshaft is configured to move the plunger between an engaged position in contact with the tubing...