ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,136, issued on Dec. 30, was assigned to OZYEGIN UNIVERSITESI (Istanbul).

"Transfemoral prosthesis for walking, sitting- standing, stair climbing" was invented by Ramazan Unal (Istanbul) and Ege Gediksiz (Kocaeli, Turkey).

According to the abstract* released by the U.S. Patent & Trademark Office: "A prosthesis or orthosis device includes a knee joint connectable with the user's leg; a swing storage spring-gear mechanism comprising a balancing spring inserted in an ankle member housing located in an ankle member, a drive gear, a driven gear, an intermediate gear and a gear rod, and a foot part comprising a dorsiflexion spring; a lower leg connecting a knee joint and a foot part to ...