ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,812, issued on July 21, was assigned to B. Braun Melsungen AG (Melsungen, Germany).

"Method for producing a drip chamber, drip chamber, infusion system or transfusion system" was invented by Christof Schlitt (Frielendorf, Germany) and Gerrit Seidel (Kassel, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing a drip chamber includes connecting an upper part, a lower part, and a middle part together. The upper part and the lower part are connected in a fluid-tight manner via the middle part. Alternatively, the upper part and the lower part are directly connected in a fluid-tight manner, and the middle part is attached to t...