ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,348, issued on July 15.
"Method of assembling a pivotal bone anchor assembly with press-in-place insert" was invented by Roger P. Jackson (Prairie Village, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of assembling a pivotal bone anchor assembly includes positioning an upper portion of a bone screw and a ring shaped structure into a central bore of a receiver, the central bore having an internal retaining recess above a lower opening, the upper portion having a partial spherical lower surface providing for pivotal motion of the bone screw with respect to the receiver. The method also includes positioning an insert into the central bo...