Medical Injection Guns

Injection guns deliver medicine directly to an area needing treatment faster than traditional hypodermic shots--without penetrating the skin. The gun injects medicine--in the form of a fine powder--into the bloodstream with pressurized gas. Because the gun does not come in contact with any human fluids, it can be reused for multiple injections.

Researched by MARK HAFER AND CHRISTINE FREY / For The Times; Source: www.howstuffworks.com