ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,226,306, issued on Feb. 18, was assigned to Hongwei Chen (Quanzhou, China).
"Aortic stent-graft" was invented by Hongwei Chen (Quanzhou, China), Weiguo Fu (Shanghai) and Lixin Wang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aortic stent-graft includes a main aortic stent-graft and a plurality of branch arterial stent-grafts. The main aortic stent-graft includes a proximal segment, a depressed segment, and a distal segment; steps are provided on a top surface of the depressed segment from left to right; one or two first orifices are formed on a middle-upper part of a right side wall of the proximal segment, and one or two second orifices...