A local anaesthetic injection is given into the scrotum below the penis, well away from the testicles. This works very quickly to completely numb the region, after which no pain should be felt.
A small puncture wound is made in the skin of the scrotum and each vas is gently pulled out through this. A segment of each vas is removed and the cut ends of the vas are cauterized to seal them off. The vas ends are then tied off with small sutures to stop sperm escaping and then separated from each other to minimize the risk of spontaneous reconnection.
The operation normally takes only 20-30 minutes. Most men are pleasantly surprised at how quick and painless the procedure is.
The skin wound is so small it does not require stitching. It will heal in a few days. The internal sutures dissolve with time.