ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,414,808, issued on Sept. 16, was assigned to AVENU MEDICAL INC. (San Juan Capistrano, Calif.).

"Intravascular arterial to venous anastomosis and tissue welding catheter" was invented by Gene Reu (San Juan Capistrano, Calif.), Brad M. Kellerman (Escondido, Calif.) and David K. Wrolstad (Yucaipa, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heatin...