Vasectomy — Permanent Male Contraception

What is a vasectomy?

A vasectomy is a straightforward surgical procedure for permanent male contraception. It works by cutting and sealing the vas deferens — the two tubes that carry sperm from the testicles to the urethra. After a successful vasectomy, semen no longer contains sperm, making pregnancy extremely unlikely.

The procedure does not affect hormone production, sexual drive, erections, or the sensation of ejaculation. The testes continue to produce testosterone normally; the only change is the absence of sperm from the ejaculate.

Who chooses vasectomy?

Vasectomy is appropriate for men who are certain they do not wish to father children in the future, either currently or with a new partner. The decision is personal and should be made with care and without external pressure. The procedure is most suitable when both partners — where applicable — are in agreement.

Men who are ambivalent about future fertility are counselled carefully. Sperm banking before the procedure is an option for those who wish to preserve the possibility of biological parenthood even if they proceed with vasectomy.

What to expect: before, during, and after

Before the procedure

A consultation is held to discuss the nature of the procedure, confirm that it is the right decision, and answer questions. Pre-operative blood tests may be taken. No fasting is required as local anaesthetic is used. You are advised to wear supportive underwear on the day and to have someone available to drive you home, though many men are comfortable travelling independently.

During the procedure

Local anaesthetic is injected into the skin and around each vas deferens. Once the area is numb, a small puncture is made in the midline of the scrotum using the no-scalpel technique. Each vas deferens is gently brought to the surface, a short segment is excised, and the ends are sealed. The procedure takes approximately 15–20 minutes. Some men feel mild pressure or tugging during the procedure; this is normal. The skin puncture closes without sutures.

After the procedure

You can go home shortly after the procedure. Some scrotal swelling and discomfort for a few days is normal. Support underwear and mild analgesia are advised. Strenuous exercise and heavy lifting should be avoided for one week. Sexual activity can resume when comfortable, usually after a few days — but contraception must continue until azoospermia is confirmed.

Confirmation and long-term outcome

A semen analysis is arranged at 12 weeks after the procedure. The sample is examined for the presence of sperm. A single clear result confirming azoospermia is sufficient in most cases to advise that contraception can be discontinued.

Vasectomy is among the most reliable forms of contraception, with a failure rate substantially lower than most other methods. Spontaneous reconnection of the vas (recanalisation) is rare and is the most common reason for late failure. If any unexpected pregnancy or return of sperm in semen analysis occurs, medical advice should be sought promptly.