ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,554, issued on Sept. 23, was assigned to GUANGDONG PROVINCIAL HOSPITAL OF CHINESE MEDICINE (Guangzhou, China).
"Precise arterial blood sampling device" was invented by Yingchao Xiao (Guangzhou, China), Zhiqiang Chen (Guangzhou, China) and Jiechao Xiao (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A precise arterial blood sampling device comprising a pen cap and a pen container which comprises a front pen container and a rear pen container, wherein: a first piezoelectric sensor sensing column is horizontally fixed to the front pen container, a horizontal slide rail is provided on the front pen container, a second piezoelectric sen...