Intra-uterine devices, "omega" type, copper and plastic, UK, 1970-1981
An intrauterine device is known as an IUD. It is a contraceptive worn inside the uterus, potentially for up to five years. An IUD works after conception. It stops a newly fertilised embryo implanting and growing in the lining of the uterus. This IUD is made of copper and plastic. It comes with a disposable introducer used by a physician to insert the device into the uterus. Intrauterine devices became popular in the 1960s and 1970s. However, their use fluctuated during the 1980s due to health scares and litigation. An IUD is now the most inexpensive long-term reversible method of contraception available.