Age of Ultron Explains How Tony Healed His Titan Injuries in Endgame
Iron Man’s fatal wound from Thanos was healed in Avengers: Endgame thanks to a piece of technology that debuted in Avengers: Age of Ultron.
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The technology Iron Man used to heal his Thanos’ inflicted wounds in Avengers: Endgame was previously shown in Avengers: Age of Ultron. Tony Stark was known for constantly tinkering on his suit, looking for ways to improve it as best seen in how he got in and out of it. While his armor can do a lot of things, one unexpected ability was for it to treat injuries, especially a seemingly otherwise fatal one that he got when he fought the Mad Titan in Avengers: Infinity War.
In an effort to bring the fight to Thanos and prevent damage on Earth, Iron Man, Doctor Strange, and Spider-Man boarded the Q-Ship and headed to Titan where they first encountered Star-Lord and the rest of the Guardians of the Galaxy. Despite an initial conflict, they eventually came up with a plan to ambush the Mad Titan. During the villain’s one-on-one with Iron Man, he pierced him in the abdomen with the hero’s own armor spear-shaped weapon. This was a shocking moment as it could’ve spelled the end of Tony Stark. Fortunately, before Thanos can go for the total kill, Doctor Strange saved his life by giving up the Time Stone.
It’s worth noting, however, that before the Mad Titan backed out, he already wounded Tony fatally. With no medical facility in sight, made so much worse by the decimation as it left him with just Nebula, it’s curious how Iron Man was able to survive 22 days not being treated properly. This was made possible, however, by the piece of technology that was first seen in Age of Ultron. Called the Regeneration cradle, it was used by Dr. Helen Cho to heal Hawkeye’s injuries from their mission to secure the Scepter from the HYDRA research base. In it, the Korean doctor explains that the machinery she’s using has nano-molecular functionality, which basically rebuilds tissues as supplemented by Bruce Banner. Considering that Cho was directly working with Tony and she was operating at the Avengers HQ, he would’ve had access to it. If anything, Infinity War proved that he had been working on using nano-tech resulting in the Bleeding Edge suit. So, he also incorporated this particular element into his armor, allowing him to initially patch up the wound in the immediate aftermath of his fight with Thanos and later on with the help of Nebula in Endgame while they were floating aimlessly aboard the Benatar.
The Regeneration Cradle is powerful as it “prints tissue; it can’t build a living body.” It was what created Vision so it’s not impossible that it’s able to heal Iron Man’s wounds. That being said, considering that Tony had to miniaturize the tech so it can be portable, it’s safe to say that his version wasn’t as powerful compared to Cho’s massive machine. This was the reason why Tony had to eventually ask Nebula to repatch the wound once they’re out of Titan. As seen in Age of Ultron, its effects were supposed to be instantaneous, with Hawkeye’s wound immediately closing up with no visible scarring quickly after he was treated by Cho. Fortunately, Iron Man’s technological adaptation of the Regeneration Cradle was powerful enough to heal his wounds so he could survive the wound until he got proper medical care once he was back on Earth – because without it, he could have well died from blood loss then and there.
It’s unclear if the full Regeneration Cradle will ever make another appearance in the MCU. After Avengers: Age of Ultron Dr. Helen Cho and her valuable creation was never featured again in the MCU. Considering how powerful it is in healing injuries, it could prove to be useful, particularly for Smart Hulk, who suffered a tremendous arm injury when he enacted the reverse snap in Avengers: Endgame.
Link Source : https://screenrant.com/avengers-age-ultron-endgame-tony-injuries-heal-nanotech/