Vasectomy is the total or partial extirpation of the vas deferens of man, which are the tubes that carry sperm out of the testes. What it does is block the sperm duct, and therefore prevent the sperm out of the testes. So it is an effective method of birth control, since the woman can not become pregnant, but not recommended in the short term, because for a while there are still stored sperm. This is a simple outpatient surgical intervention in the majority of cases in which local anesthesia is used. The recovery takes less than a week. After vasectomy, the man can still have orgasms and ejaculate semen.