Exactly - all this says is that if you're carried in unconscious and dying, normal treatments wouldn't work, and the only option that could possibly save you from death is experimental, they don't have to wait to get consent. And this is *only* in cases where the *only* alternative to the experimental technique or gear is **death**. So basically, you, the patient, have nothing to lose (because you're going to die otherwise, because conventional treatments won't help) and everything to gain (you may have to have AA batteries on you the rest of your life, but hey, you're still alive.)
As for actual examples of this technique saving people, here you go. It takes place in Israel, where such guidelines are already in place; check out the bottom sidebar: http://www.newscientist.com/article/mg18925435.800-saved-by-sand-poured-into-the-wounds.html