One of the prospective technologies that I have been monitoring is that of non-invasive surgery using magnetics or injectable robots. A device that moves surgery in that direction has just received CE approval and De Novo FDA clearance.
Levita Magnetics has developed a laparoscopic instrument that has a tip that can be detached from the tool once it is inside the body. The procedure involves grasping and clamping onto tissue, releasing the tip from the tool, then using a magnet outside the body to move the tip and the grasped tissue along with it. For example, the gall bladder could be lifted to position it to be dissected. The advantage of this system is that it eliminates one incision.
The Levita system represents a step in the direction toward the future of surgery, which will be performed non-invasively.