US Patent Issued to SUZHOU HEALTHY TREE MEDICAL TECHNOLOGY on Oct. 28 for "Injector pen and dose adjustment mechanism thereof" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,821, issued on Oct. 28, was assigned to SUZHOU HEALTHY TREE MEDICAL TECHNOLOGY Co. LTD (China).

"Injector pen and dose adjustment mechanism thereof" was invented by Changyan Xiong (Jiangsu, China), Huashun Li (Jiangsu, China) and Sixian He (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dose adjustment mechanism includes a power rod, a cylinder, a ball, a sleeve and a torsion spring; the cylinder is outer-mounted on the power rod, a spiral channel extending along the axial direction of the power rod is formed between the inner wall of the cylinder and the outer wall of the power rod, and the ball is rollable in the spiral channel; t...