The sperm carrying tubes are called the vas deferens and these tubes come from a man’s testicles. When a vasectomy is performed the vas deferens are sealed to stop sperm getting through. This does not affect the ejaculate fluid as this comes from a different area called the seminal gland. A fast acting local anaesthetic is given, which quickly numbs the area. We are also able to offer sedation at some of our centres if you are feeling very apprehensive. At Marie Stopes International centres a cautery technique is used. The incision to locate the vas deferens is very tiny and no scalpel or stitches are needed, except in very rare cases. The vasectomy procedure takes about 10-15 minutes to perform. After a vasectomy the testicles will continue to produce sperm as normal, but it cannot enter the tubes and is simply reabsorbed into the body.