ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,769, issued on April 14, was assigned to DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY (Daegu, South Korea).

"Balloon-type retinal stimulation device and method for manufacturing same" was invented by So Hee Kim (Daegu, South Korea), Hyun Min Moon (Daegu, South Korea) and Nam Sun Chou (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A balloon type retinal stimulation device includes: a substrate unit having an insertion portion provided to be inserted into an eyeball; and a stimulation unit that is provided at one or both of one and the other surfaces of the substrate unit. The insertion portion is provided to be expandable ...