For those of you not around between the 1950s and 1970s, let me introduce you to the Jet Injector. Back in the day, everyone received the smallpox vaccine.

Thanks to his "hypospray," Star Trek's Dr. McCoy never had to deal with any dangerous needles. The same could be true for your own doctor, since needle-free jet injectors have been available for ...

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.

Hypospray Jet Injector used in typhus vaccination at a US military base, 1959. (Photo by Roy C. McManus. Post Sig Photo Lab, Fort Gordon, GA) ...

Unfortunately, because wear and tear often damaged jet injectors, their use required WHO to maintain a staff that could care for these devices. As a result, jet injectors were used only in places like ...

Note 3: "Jet Injector" uses the explosion of gunpowder as the driving force to produce a jet flow of mRNA solution, thereby efficiently delivering mRNA into skin cells. See Fig. 2.

Features REWIND: From robots to jet injectors, the medical devices of yesteryear Archived WFAA stories show how North Texas hospital have changed their methods over time.