ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,558, issued on Feb. 10, was assigned to Abiomed Europe GmbH (Aachen, Germany).

"Blood pump" was invented by Thorsten Siess (Aachen, Germany) and Walid Aboulhosn (Aachen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet connected by a passage, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation. The impeller is provided with blades sized and shaped for conveying blood along the passage from the blood flow inlet to the blood flow outlet, and is rotatably supported in the pump casing by a first bearing at a first axial e...