Which type of contraceptive device is placed in the uterus for a prolonged period of time?

The intrauterine device (IUD) is specifically designed to be placed within the uterus and can remain effective for an extended period, typically several years, depending on the type. This long-acting reversible contraceptive method works by preventing fertilization of an egg and can also alter the uterine lining to hinder implantation. It is an effective choice for those seeking a reliable form of birth control without the need for daily attention.

Other options, such as vaginal tablets and sponges, are designed for short-term use and must be used with each sexual encounter, whereas TSS does not refer to a contraceptive method. The distinct advantage of an IUD is its ability to provide continuous contraception with minimal user intervention.