What I have made is a medical arm that astronaut would have in the sleeve of their suit. If an astronaut gets hurt, this arm would come out of their sleeve and try to fix what is wrong. Once it is printed, you can program the arm to take care of medical emergencies. When you are programing it I recommend programing it to fix the part of the body that received the most damage. My arm that is trying to fix the problem is made out of titanium because I do not want it to break easily. I have made this because I wanted to help in the travel to Mars. I wish all the astronauts and the families of the astronauts good luck on the most dangerous thing the human race has done so far. So I wish you all good luck.