First you put the patient under surgery, and remove both legs at the hips. Let him fully recover, and do the same with his arms. Then remove any unnecessary organs (several feet of intestine, a kidney, a lung, a liver). Then finally, remove the flesh of the body, leaving the organs, and place them into some sort of solution designed to hold oxygen (that liquid from the abyss). Finally, place the head onto a perfectly designed jar that the organs all hang into while the head fits perfectly on top, on leave the person on display. Change the water once in a while. You can even design the liquid to hold nutrients, since he won't be needing many at all. Then let him be a freak science experiment and let people look at him for years and years while he slowly dies of old age and boredom.