ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,708,522, issued on Aug. 18, was assigned to L&K BIOMED Co. LTD. (Yongin-si, South Korea).

"Height-adjustable spinal fusion cage" was invented by Gook Jin Kang (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a spinal fusion cage which is inserted between vertebral bodies at the lowest height and is height-adjustable in the inserted state, and has improved fixing strength by insertion of a bone screw through an end plate, wherein cages having heights within a predetermined range can be replaced by a single cage. Therefore, manufacturers can reduce the number of product groups that need to be produced, an...