Cold medical plasma is a relatively new technology for treating lots of diseases. It can be used for healing Wounds and deactivate bacteria. A commercial device is sold by
http://www.plasmamedicalsystems.com/ Unfurtunately, the pricelist is hidden behind a password protected website. But according to the picture in the catalogue, I would guess that the device costs around 20k US$ each. It seems, that the technology is available, is sold sometimes, but is not available at Amazon but only sold for a limited audience.