ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,275, issued on July 28, was assigned to Boston Scientific Scimed Inc. (Maple Grove, Minn.).

"Percutaneous circulatory support system facilitating reduced hemolysis" was invented by Daniel H. VanCamp (Elk River, Minn.), Steven R. Larsen (Lino Lakes, Minn.) and Jeffrey Lucas (Hopkins, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A percutaneous circulatory support device includes an impeller housing having an inlet and an outlet. A shaft is rotatably fixed relative to the impeller housing. An impeller is configured to rotate relative to the shaft and the impeller housing to cause blood to flow into the inlet, through the impeller housing, and o...