Which of the following is a non-medicated intrauterine device (IUD)?

The correct answer is Option (2) → Lippes loop

IUDs (intra uterine devices) are placed in the uterus by doctors or expert nurses. The book sorts them into three kinds: non-medicated IUDs, copper releasing IUDs and hormone releasing IUDs. A non-medicated IUD releases no substance; it acts only as a device inside the uterus.

Option (1) CuT — Incorrect. CuT (Copper T) is a copper releasing IUD. The copper ions it releases suppress sperm motility and the fertilising capacity of sperms.

Option (2) Lippes loop — Correct. Lippes loop is the book’s example of a non-medicated IUD. It releases neither copper nor hormone; like every IUD, it increases phagocytosis of sperms within the uterus.

Option (3) Cu7 — Incorrect. Cu7 (Copper 7) is another copper releasing IUD, of the same group as CuT and Multiload 375.

Option (4) LNG-20 — Incorrect. LNG-20 (an IUD that releases the hormone levonorgestrel) is a hormone releasing IUD. Besides acting as an IUD, it makes the uterus unsuitable for implantation and the cervix hostile to sperms.

NCERT Extract:
Population Stabilisation and Birth Control – “… Another effective and popular method is the use of Intra Uterine Devices (IUDs). 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) (Figure 3.2). IUDs 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.”