The link carries four different methods on which you asked the question about electronic devices for pain management, several being for tissue repair: Galvanic Stimulation, Interferential Generator, INF, Transcutaneous Electrical Neural Stimulation, TENS, and Microcurrent Electrical Neuromuscular Stimulator, MENS. It's a site I found when searching for electrical pain management, you can do a search for yourself to see it shows up, I have nothing to do with this website, but maybe one can help your cousin. Good luck.