redletterdave writes: "MIT researchers unveiled a prototype device on Thursday that uses a new way to administer drugs, replacing the common needle with a tiny, highly-controllable jet injector, which sends a high-pressured stream directly into the skin. The jet can both inject into and aspirate from tissue, and the device is controlled via a computer interface, which can control the volume of the drug delivery, and the velocity at which it moves. But besides giving doctors better control over injections, the best part of this technology is that it is virtually painless — in fact, patients won't feel much of anything at all. The fine jet that comes out of the device is about the same diameter as a mosquito proboscis, which makes it perfect for those with needle phobias or those who inject frequently. The device's technology can also deliver drugs through the eye and into the retina, through the tympanic membrane and into the middle and inner ear, and it can even vibrate powder so it behaves like a liquid to be injected."