VasectomyVasectomy is a small procedure to cut the vas deferens. This is the tube that takes the sperms from the testicles (testes) to the penis. Sperms are made in the testes. Once the vas deferens is cut, sperm can no longer get into the semen that comes out (is ejaculated) during sex. Vasectomy (the SNIP) is very reliable - but not quite 100%. Even after a successful operation about 1 in 2,000 men who have had a vasectomy will become fertile again at some point in the future. This is because, rarely, the two ends of the cut vas deferens re-unite over time. Vasectomy FAQs |
Vasectomy (THE SNIP) is usually done under a local anesthetic. This means you are awake but have an injection into the skin so that you do not feel pain. Local anesthetic is injected into a small area of skin on either side of the scrotum above the testicles (testes). One small cut is then made to these numbed areas of skin. A tiny puncture hole is made in the skin on each side of the scrotum. The vas deferens can be seen quite easily under the cut skin. It can be cut with a surgical knife (scalpel) or using diathermy. Diathermy is electrical current that cuts and seals the ends of the tubes. It stops bleeding at the same time. Sometimes a small piece of the vas deferens is removed. The hole is so small you will not need any stitches. The operation takes about 15 minutes. | There is usually some discomfort and bruising for a few days afterwards. This normally goes away quickly. The discomfort can be helped by wearing tight-fitting underpants day and night for a week or so after the operation. It is also best not to do heavy lifting or strenuous exercise for four weeks or so after the operation. |
Do not consider having the operation unless you and your partner are sure you do not want children, or further children. Consider all sorts of situations, including a tragedy in the family or a break-up of your relationship. Only have a vasectomy if you are sure you would not want more children even in those situations. It is wise not to make the decision at times of crisis or change, such as after a new baby or termination of pregnancy. It is best not to make the decision if there are any major problems in your relationship with your partner. | Remember there are reversible forms of long-term contraception which are very effective. Consider these as a couple before making your decision. These are all for women. See the separate leaflet called Long-acting Reversible Contraceptives (LARCs). Ideally, both partners are happy with the decision before a vasectomy. However, it is not legally necessary to obtain your partner's permission. |