A vasectomy is surgery to make a man sterile (permanently unable to
father a child). During a vasectomy, the tube that carries sperm from the
testicles to the urethra (called the vas deferens) is cut and tied off or clipped,
preventing sperm from being released during ejaculation.
Sarah Marshall, MD - Family Medicine & Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology