Medical technology is advancing rapidly thanks to computers, but it's taking a while for all that nifty computerized medicine to make its way inside our bodies. Humans aren't generally compatible with electronics, but that may change with the invention of the first 3D bioengineered cyborg tissues.
When we say "cyborg tissues," we mean chunks of human cells with a three dimensional network of active nanowires running through them. The living cells are grown around tiny wiring scaffolds, and by the time everything has meshed together, the idea is that you're left with a seamlessly integrated fusion of biology and electronics.
There are lots of reasons to want to do this, besides creating a race of cyborg servants that almost certainly won't later rise up in rebellion and exterminate us all. For example, having a wiring network inside living tissue makes for a great way taking noninvasive data about what said tissue is up to, and this has already been demonstrated by the researchers in heart cells, nerve cells, and artificial blood vessels. The most exciting possibilities, though, come from the potential for actually controlling cells directly, either through drug releases or even perhaps direct electrical stimulation.