
Tony Stark's heart.
Tony Stark's Artificial Heart is a machine to keep Tony's injured heart functioning.
Overview[]
Tony Stark has a damaged heart from the plane crash that; the Mandarin had caused and; because of that; he has an implant; made; by Dr. Ho Yinsen that; keeps it beating.
Tony's implant is made out of a stabilized form of Kylight, a metal that; is found in the abandoned Stark outpost in the Arctic.
After Tony took the Extremis serum, it had repaired his heart and had discarded the implant, making it unnecessary for his health. It is unknown what happened to it after it was discarded from his body.