The intrauterine device (IUD)
The intrauterine device (IUD) (also known as the “coil” or “copper coil” or “copper T” or “loop”) is a small T-shaped plastic and copper device that is fitted in the uterus (womb). It provides contraceptive protection for up to ten years.
The copper stops the sperm and egg from surviving inside the uterus and fallopian tubes, so sperm cannot fertilise an egg.