I believe that the "mechanisms" exist in that you can volunteer if you want. However, the people on the other end -- the ones conducting the research -- can't

I believe that the "mechanisms" exist in that you can volunteer if you want. However, the people on the other end -- the ones conducting the research -- can't an test an unregulated device on you (I'm coming at this from the Medical Device aspect, since that's what I'm familiar with), without following certain procedures to ensure that it's safe and efficacious. As a result, it really doesn't matter whether or not you're dying.