ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,511, issued on April 21, was assigned to Qingdao Diao Medical Technology Co. Ltd. (Qingdao, China).
"Medical precise dose syringe for botulinum toxin" was invented by Wenyu Wu (Shanghai), Qin Li (Chengdu, China), Jufang Zhang (Hangzhou, China), Lin Gao (Xi'an, China), Yuanhong Li (Shenyang, China), Xueli Li (Zhengzhou, China), Miao Li (Shenyang, China) and Xiaodong Zhao (Harbin, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A precise dose syringe for medical botulinum toxin is provided, which includes a syringe and a plunger handle. Multiple arc-shaped grooves are respectively provided on both sides of the plunger handle, and a scale line is...