US Patent Issued to BIEDERMANN TECHNOLOGIES on April 29 for "Coupling device for coupling a rod to a bone anchor" (German Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,285,193, issued on April 29, was assigned to BIEDERMANN TECHNOLOGIES GMBH & Co. KG (Donaueschingen, Germany).

"Coupling device for coupling a rod to a bone anchor" was invented by Lutz Biedermann (VS-Villingen, Germany) and Berthold Dannecker (St. Georgen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupling device for coupling a rod to a bone anchor includes a receiving part having a central axis, a coaxial passage, and an engagement recess extending laterally into the passage, and a pressure member having an expandable portion to clamp the head, a radially outwardly facing surface, and an engagement surface extending from the radially outw...