From Vasectomy.com

Although vasectomy should be considered a permanent form of birth control, around 6 percent of men will eventually decide to undergo a vasectomy reversal. This procedure is done to restore a man’s fertility and allow him to father a child through natural means.

One method for reversing a vasectomy is a vasovasostomy. During this surgical procedure, the two cut ends of the vas deferens are sewn back together using very fine sutures viewed through a powerful surgical microscope. If successful, this procedure will enable sperm to flow from the testicles once again.

Several surgical techniques exist for rejoining the vas deferens. Some work better than others, but the best results are always obtained by doctors with training in microsurgical reconstruction. One of these methods is known as a two-layer vasovasostomy. Read More