As I read your messages I am struck by your innovation! it seems to me you are working in a field hospital in South Africa? Are you a doctor/medic?
It does not really matter.....I suspect we are all in the same boat really.......looking for answers we cannot get from conventional medicine!
I do a fair amount of experimenting too, and what I have learnt over the last few years is to use my instinct. I use a zapper and a frequency generator and also use kineisiology with them to get the right frequencies.
I set my generator to certain frequencies for known parasites and see if using muscle testing , the subject is stregnthened by having that frequency applied. Its using it as a diagnostic tool. I suppose you could use the same principle to tune your device to the most effective frequency for your patient.