A vasectomy is done by blocking the tube, called the
vas deferens, through which sperm normally pass from each testicle on the way to the seminal vesicle, forming semen.
After numbing the scrotum and making one or two small openings in it, the surgeon cuts each vas deferens (possibly removing a small section of it as well). He or she will then close one or both cut ends of the tubes with stitches or other techniques, and, if needed, close the opening(s) in the scrotum with stitches. The "no-scalpel vasectomy" technique relies on small puncture holes made in the scrotum that do not need stitches.
The surgery usually takes no more than 30 minutes, after which time almost all men go home the same day. In most cases, recovery takes less than a week.