Treatment Choice - Treatment Choice | Compare Prices | Find Hospital | A woman can get pregnant if a man’s sperm reaches one of her eggs (ova). Contraception tries to stop this happening by keeping the egg and sperm apart or by stopping egg production. One method of contraception is vasectomy (male sterilisation). During a minor operation, the tubes that carry sperm from a man's testicles to the penis are cut, blocked or sealed.<br/>This prevents sperm from reaching the seminal fluid (semen), which is ejaculated from the penis during sex. There will be no sperm in the semen, so a woman's egg can't be fertilised.