ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,244, issued on Feb. 17.

"Pedicle screw switchable between monoaxial mode and polyaxial mode" was invented by Shih-Tien Wang (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pedicle screw is switchable between a monoaxial mode and a polyaxial mode, which mainly comprises a tulip, a bone screw, and a fastener. The tulip includes an upper opening, a lower opening, and two side openings; the two side openings allow a corrective connecting rod to pass through; the fastener is tightly screwed to the upper opening of the tulip; the bone-locking section of the bone screw passes through the lower opening of the tulip. The tulip can be deflect...