This is only the beginning of his journey as he lost his dominant hand. He's looking at months and months of physical therapy and rehabilitation just to be able to go back to a normal life.
He is a wonderful son, brother, uncle and person and doesn't need to be burdened by medical bills and copays after already losing so much. Please, give what you're able to and share to give him as much support as possible. And of course, keep him in your prayers.