What types of female contraceptive rings are there?

Condoms and IUDs are both the preferred contraceptive methods for women. IUDs are also called intrauterine devices. IUDs are a safe, effective and long-term contraceptive method. They can also avoid some adverse reactions caused by birth control pills. IUDs do not affect women's endocrine system and are very popular among women. There are many types of female contraceptive rings on the market. So what are they?

What shapes of contraceptive rings are there?

1. Em Ring

The configuration design of the AIM Ring can adapt to the subtle changes in the shape of the uterus, thereby maintaining a dynamic balance. It can maintain a good shape within the normal body temperature of the human body and is not prone to falling off. Moreover, the AIM ring is highly resistant to corrosion and can be placed in the human body for more than 10 years.

2. T-ring

T-shaped rings can generally be placed for 8-10 years. When placed, a tail thread will usually be left. In order to facilitate inspection and removal of the ring, the tail thread can be cut off depending on the situation. The T-shaped active ring also contains active substances such as lead, which can effectively improve the contraceptive effect. Therefore, the T-type has the advantages of good contraceptive effect and easy insertion and removal, and is suitable for most women.

3. O-ring

The side effects of O-ring placement are minimal, infection is rare, and the placement period is generally around 10 years. However, O-rings also have obvious flaws. The chances of pregnancy and ring shedding are higher than with other rings. Also, due to its closed structure, the ring may become incarcerated after being left for a long time.

The contraceptive principle of the contraceptive ring

1. The copper ions in the copper intrauterine contraceptive ring aggravate the aseptic inflammatory response of the endometrium and interfere with the activity of the enzyme system necessary for implantation, which is not conducive to the implantation of the fertilized egg and the development of the blastocyst.

2. Copper ions may also change the biochemical properties of cervical mucus, affect sperm activity and capacitation, and thus further enhance the contraceptive effect. Copper ions can also directly kill sperm and fertilized eggs.

3. The role of prostaglandins: Long-term stimulation of the IUD causes the endometrium to produce prostaglandins. On the one hand, prostaglandins can enhance uterine contraction and fallopian tube peristalsis, causing fertilized eggs that are not sufficiently developed and divided to be sent to the uterine cavity prematurely, thus affecting implantation.

4. A large amount of prostaglandins can enhance the effect of estrogen, inhibiting the decidual reaction of the endometrium during pregnancy, which is not conducive to the implantation of the fertilized egg.

5. The ring can interfere with the normal cyclic changes of the endometrium, which is not conducive to implantation; it can also affect the transport or capacitation of sperm. Intrauterine devices containing high doses of levonorgestrel may also inhibit ovulation, change the properties of cervical mucus, and hinder sperm penetration.