ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,147, issued on March 18, was assigned to BIEDERMANN TECHNOLOGIES GMBH & Co. KG (Donaueschingen, Germany).
"Polyaxial bone anchoring device with enlarged pivot angle" was invented by Lutz Biedermann (VS-Villingen, Germany) and Martin Meer (Vohringen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polyaxial bone anchoring device includes a receiving part configured to be pivotably connected to a head of an anchoring element, the receiving part having a channel for receiving a rod and an accommodation space having an opening for accommodating the head, and a sleeve-like insert piece having a sleeve axis and a spherical segment-shaped outer s...