ALEXANDRIA, Va., June 9 -- United States Patent no. 12,285,192, issued on April 29, was assigned to Jiangxi Provincial People's Hospital (Nanchang, China).
"Pedicle screw-rod system capable of gradually changing from rigid fixation to non-rigid fixation" was invented by Xieping Dong (Nanchang, China), Qingli Li (Nanchang, China) and Weiyi He (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pedicle screw-rod system capable of gradually changing from rigid fixation to non-rigid fixation is provided. The system includes a pedicle screw, a connecting rod, and a screw plug. The connecting rod is used for connecting in series the pedicle screw fixed to adjacent vertebrae on the same side of a spi...