Hypospray

A hypospray is a medical device in the science fiction television series Star Trek. It is similar to a jet injector, a real medical device, with the main difference being that the fictional medical device doesn't penetrate the skin.

The concept of the hypospray was developed when producers of the original Star Trek series discovered that NBC's broadcast standards and practices prohibited the use of hypodermic syringes to inject medications; the needleless hypospray sidestepped this issue. The prop used in the original series appeared to be a modified fuel injector for a large automotive diesel engine, similar to the engines from which jet injectors were derived.