ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,024, issued on Oct. 21, was assigned to Greenwood Medical LLC (Duluth, Minn.).

"Motion preserving system and apparatus" was invented by Jeffrey C. Felt (Duluth, Minn.), Mark A. Rydell (Bella Vista, Ark.), James B. Easley (Orono, Minn.), Matthew D. Hajicek (Maple Grove, Minn.) and Andrew N. Smith (Maple Grove, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, apparatuses and methods for preserving motion in an intervertebral disc. Modular disc implant segments can be constructed from a relatively rigid material with compressive spring lobes to act similar to an elastomer. The lobes may be configured to have a C-shaped outer wall and one o...