ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,642, issued on Oct. 28, was assigned to National Yang Ming Chiao Tung University (Taipei, Taiwan).

"Expanded spinal fusion cage" was invented by Chun-Li Lin (Taipei, Taiwan), Shih-Chieh Shen (Taipei, Taiwan), Shao-Fu Huang (Taipei, Taiwan) and Wei-Hsiang Sun (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An expanded spinal fusion cage is provided and includes: an outer frame; a sliding block set with a middle sliding block located within the outer frame, and the middle sliding block is located between two outer sliding blocks; a screw rod penetrating through and combined with the outer frame, and the screw rod is screwed with the mid...