Hypodermic injectors were a type of medical equipment. 2-1B surgical droid could have use a hypodermic injector as an attachment in place of one of their forearms. The 2-1B surgical droid that worked on initial installation of the Sith Lord Darth Vader's cybernetics in 19 BBY was equipped with a hypodermic injector.
- Star Wars: Episode III Revenge of the Sith (First appearance)
- Star Wars Character Encyclopedia: Updated and Expanded (First identified as hypodermic injector)