Our urologist is doing it, but none of my patients have had it yet.  The idea is that there is no surgery. The alternative operations involve either cutting a new path in the prostate or burning a new path.  
This procedure is done through the rectum and, as the diagram shows, the "wings" of the over grown prostate are tucked and fixed out of the way.  It is a very clever idea if it really works and would avoid surgery.  I will try to find more on the actual results.