All of these areas that you mention are active in clinical research at the present time. The only one in actual human testing at the present time is the wearable artificial kidney (WAK). As far as I know, less than 10 people have used the WAK as a pilot study. Further human studies are being planned. The other two technologies are still in the research lab and no human studies have been started as far as I know. My estimate is that these technologies are still years from being generally available.