ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,249, issued on Oct. 14, was assigned to BIOLIFE MEDICAL DEVICE INC. (Hsinchu, Taiwan).
"Trumpet expandable vertebral device and assembly thereof" was invented by Li-Sen Chen (Hsinchu, Taiwan), Che-Yang Chao (Hsinchu, Taiwan) and Wei-Tai Jao (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trumpet expandable vertebral device, includes: a center shaft including a cylinder body and an expanding ring connected to each other, wherein the cylinder body has a far end which has an outer thread; and an expandable portion including an end collar, a connection part and plural expandable plates, wherein the expandable portion is located outside...