ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,507, issued on Nov. 25, was assigned to HEIFENG ZHIZAO (SHENZHEN) TECHNOLOGY Co. LTD (Shenzhen, China).

"Drug delivery part for visual ear picking stick" was invented by Yichun Lu (Guangdong, China), Geyan Yu (Guangdong, China) and Bicheng Dai (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drug delivery part for a visual ear picking stick. The visual ear picking stick includes a shell and a movement arranged in the shell. The movement includes an image acquisition component. The shell includes a holding section and a neck section which are arranged in an axial direction. The image acquisition component is mounted at one end of th...