Comfortably Numb is a single-use Three printed device that numbs the skin . Produces a rapid chemical reaction to cool the patient 's skin in 60 seconds . Invention costs around $ 2 to make and could help millions terrified of pain . 3D first-year students behind invention say it could work for tattoos too .
Comfortably Numb is a single-use 3D printed device that numbs the skin . Produces a rapid chemical reaction to cool the patient 's skin in 60 seconds . Invention costs around $ 2 to make and could help millions terrified of pain . Three first-year students behind invention say it could work for tattoos too .