Patent 11564809 was granted and assigned to Alphatec Spine on January, 2023 by the United States Patent and Trademark Office.
The present disclosure relates to expandable interbodies that include superior and inferior shells and a control assembly positioned between and inside of the shells, the control assembly including nested cages operably connected to each other with an adjustment screw. Rotation of the adjustment screw translates the cages relative to each other, which in turn causes the shells to open or expand.