ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,402, issued on Sept. 15, was assigned to SOUTHEAST UNIVERSITY (Nanjing, China).

"Wrist rehabilitation training system based on muscle coordination and variable stiffness impedance control" was invented by Hong Zeng (Nanjing, China), Yinxin Duan (Nanjing, China), Xiao Li (Nanjing, China), Qingqing Chen (Nanjing, China) and Aiguo Song (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wrist rehabilitation training system based on muscle coordination and variable stiffness impedance control includes the following modules: an electromyographic signal collection and preprocessing module, a muscle co-decomposition and mapping model obtainin...