If you've ever been to hospital, intravenous bags are present in every room. The Justice League intravenous cases were created to provide children with a better understanding their condition and the treatment they're going through.
The idea was brought about from a collaboration between Warner Bros, JWT ad agency and A.C. Camargo Cancer Center. Along with the Justice League intravenous bags, the DC heroes are showcased in comic books that put them in similar scenarios as the children. The comic book showcases the heroes battling a sickness that they've acquired through fighting evil and features them recovering from their sickness. The children's ward has also been revamped to boast a new superhero ward for the children.
The manner with which the comic book heroes were used in shows how much of influence and comfort superheroes actually bring.