I'm now leaning towards, the con merchant side of things, overall, (but don't want to rule out him being genuine, yet).
The following website, has a 1.5 minute video (which annoys me, and gives the impression it may well be a con), with the guy explaining about his wonder
con cure machine thingie. It has lots of other details about the device as well.
The technical details, sound like nonsense to me.
http://wds-bio-resonance.com/default.aspxThere is even a wikipedia page about the device:
https://en.wikipedia.org/wiki/E-LybraWhich mentions that it has been detected (or thought to be) as a FAKE/FALSE/FRAUDULENT medical device by Quackwatch.
https://en.wikipedia.org/wiki/QuackwatchAs others have said, using 8,000 volts at very high frequencies, may actually be harmful or worse. In a sense it would be a kind of "open"/portable/unprotected microwave oven wand, although it would be 40 to 60 MHz, an unknown to us at the moment output power level, and potentially applied to various body parts.
tl;dr
It could be really dangerous, as (I don't have huge medical knowledge) I have been led to believe that internally heating/overheating/burning the internal organs is VERY bad. I read about it (if I remember correctly) as regards Electric shocks, which can do the same/similar thing (cause internal burn damage).
I'm not sure (offhand), if it would cause internal heating or not, in humans. I'm not hugely into RF stuff.
Quack "Electrodiagnostic" Deviceshttp://www.quackwatch.com/01QuackeryRelatedTopics/electro.htmlThe devices described in this article are used to diagnose nonexistent health problems, select inappropriate treatment, and defraud insurance companies. The practitioners who use them are either delusional, dishonest, or both. These devices should be confiscated and the practitioners who use them should be prosecuted. If you encounter any such device, please report it to the state attorney general, any relevant licensing board, the FDA, the FTC, the FBI, the Better Business Bureau, and any insurance company to which the practitioner submits claims that involve use of the device.