An intrauterine contraceptive device (IUCD) is a small device made of plastic or copper that is placed into the uterus as an effective method of contraception. These devices are inserted by doctors or expert nurses in the uterus through vagina.
These Intra Uterine Devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20).
IUCDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. The hormone releasing IUDs, in addition, make the uterus unsuitable for implantation and the cervix hostile to the sperms. Thus they act as effective contraceptives for females who want to delay pregnancy and/or space children.