An air-powered device has three parts: the injector, disposable syringe, and an air cartridge that uses carbon dioxide (CO 2). To use a jet injector, you: Draw insulin into the syringe.

Influenza vaccine via "jet injector?" FDA says no By David W Freeman December 27, 2011 / 11:14 PM EST / CBS News ...

Jet injectors have been delivering drugs and vaccines without needles since the Star Trek era, but never caught on widely in real-world medicine. A device developed at MIT promises to change that ...

A jet injector uses high pressure to force a vaccine or other medication through a person’s skin. Their speed made jet injectors very efficient, so many people could be vaccinated quickly.

But two problems remained before the jet injector could be used in the smallpox eradication campaign. First, the vaccines that had been administered with the jet injector were injected subcutaneously, ...

Jet injectors and beyond The earliest needle-free injection systems date back to 1866 and used jet injectors. These hand-held devices used pressure to penetrate the skin and deliver medicine.

The Ped-O-Jet, shown here, is a 1960s version of the jet injector used today for administering flu vaccines without needles. Public Domain Images A futuristic-looking jet injector can shoot this ...