Helen,
I'm not positive, but this sounds like the same concept as a TENS unit I have
tried. This uses an electrical stimulation to interrupt the pain pathways.
It did not work for me and it was explained by the doctor at the pain clinic
I went to, that it doesn't work as well on deep organ pain as on pain closer
to the surface. Hope this helps.
I hope you and your husband are doing well.
Best wishes,
Debby