It's called the DaVinci robot, and it is state of the art in regards to removing the prostate, as well as other laproscopic procedures. It can allow a surgeon to perform a procedure on a patient in a different state, even a different country. Even for surgeries where the surgeon is in the same room, the machine gives him a 3D view of the organs where a standard laproscope only gives the doctor a 2D view. This makes a huge difference in the accuracy when you're dealing with sparing nerves that the prostate enshrouds. These nerves are what can cause erectile dysfunction if they're damaged. The robotic arms also give better range of motion than standard laproscopic tools held by the surgeon themselves. Needless to say, this is not something all hospitals have, so to advertise this capability to potential patients could bring in huge revenues to a particular facility.