Vasectomy is an in-office procedure in which the urologist surgically interrupts the connection of the vas deferens for the purpose of sterilization. Occasionally, the procedure is performed in the operating room.
A vasectomy prevents the release of sperm when a man ejaculates. A vasectomy is considered a permanent method of birth control. During a vasectomy, the vas deferens from each testicle is clamped or otherwise sealed to prevent sperm from mixing with the semen that is ejaculated from the penis. An egg cannot be fertilized when there are no sperm in the semen.