MIT Builds A Needle-Free Drug Injector
The most interesting part is described near the end: they are able to inject powder. The device vibrates the powder to the point it behaves as liquid and thus can be injected easily. Cool :DSomebody correct me please; I imagine they care about powder because drugs (or vaccines?) in powdered form could sustain longer storage than liquid form.http://www.youtube.com/watch?v=M09LyLqb5qw#t=177s