ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,370, issued on April 7, was assigned to XIANGYA HOSPITAL OF CENTRAL SOUTH UNIVERSITY (Changsha City, China).

"Optimizing device for freely switching between blood cell component removal and plasma exchange" was invented by Cheng Mei (Changsha City, China), Bijuan Li (Changsha City, China), Yuanjun Jiang (Changsha City, China), Wenyu Yin (Changsha City, China), Xi Yuan (Changsha City, China), Zhimin Zhang (Changsha City, China), Linxi Shi (Changsha City, China), Ying Tan (Changsha City, China), Guangbo Tang (Changsha City, China) and Ning Li (Changsha City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optimizing device for freely switching...