1. Inert IUD (first-generation IUD): made of inert materials, such as the old circular, twisted and uterine rings. It has been discontinued in 1993 and is only often seen in perimenopausal women for IUD removal. You don’t have to remember any of the above rings because you won’t be using them. But if your sister, mother, or friend is wearing it, introduce it to them. Usually these rings are good for 10 years and should be removed at the end of that time. Of course Dr. Leaf has seen people with rings for 20 years or more. However, the likelihood of pregnancy with the ring increases over time. Also, they are instructed to always remove it within one year of menopause anyway. This is because the uterus shrinks after menopause, and the IUD doesn’t shrink! The longer menopause lasts, the more difficult and risky it will be to remove the IUD. The longer the period of menopause, the more difficult and risky it will be to remove the IUD. The doctor will have a hard time removing the IUD, and you will have to bear more risks, which is a “lose-lose” rhythm! 2.Active IUD (second-generation IUD): Contraceptive rings containing active substances (including copper ions, hormones, drugs), such as the T-ring, Mannuelle, Ginny ring and so on. The purpose of adding active substances is only to increase the effectiveness of contraception and reduce side effects, which is what you are most concerned about. How does the small metal ring prevent pregnancy? 1, the ring into the uterus, in fact, is a foreign body, can make the endometrium damage, inflammatory reaction, affecting the planting and development of embryos 2, copper ions so that the sperm head and tail separation, can not be able to get energy, affecting conception. 3, containing hormone (levonorgestrel) IUD (Man Yuele) so that some women inhibit ovulation; at the same time, the endometrium to react, not conducive to fertilization of the egg planting; so that the cervical mucus thickened, not conducive to the passage of the sperm 4, containing indomethacin IUD (Gini Zhimei Ring) through the reduction of the contraction of the uterus by the role of prostaglandins to reduce bleeding, is more popular. Who is not suitable for IUD? 1.Pregnant or suspected pregnant people The possibility of pregnancy must be ruled out before the IUD is inserted. Especially for some women who have irregular menstruation. The doctor said: irregular menstruation must not be afraid of trouble, to assist the doctor to repeatedly verify, rule out the possibility of pregnancy, responsible for their own. 2, acute inflammation or serious systemic diseases 3, malformation of reproductive organs (mediastinal uterus, double uterus) and tumors (uterine fibroids, etc.) 4, abortion, induced abortion, cesarean section, bleeding after delivery or the possibility of infection 5, loose endocervical orifice, old cervical clefts, prolapse of the uterus 6, uterine cavity < 5.5cm or > 9cm (except for the uterus of pregnancy) 7, menstrual disorders in the last 3 months and vaginal Irregular bleeding in the past 3 months 8. History of copper allergy Medical advice: Even if you are not suitable for the IUD, don’t worry, there are other contraceptive methods you can choose. We will continue to introduce them in the future. When is the best time to place the IUD? 1, 3-7 days after menstruation, do not have sex 2, placed immediately after abortion, spontaneous abortion after menstruation recovery, medication abortion after 2 normal menstruation 3, 42 days after vaginal delivery, the evil discharge is clean, the uterus recovered to normal 4, 6 months after cesarean section, 5, breastfeeding should be placed to exclude the first early pregnancy, 6, placed within 5 days of sexual intercourse is one of the emergency contraceptive methods. 5 need to be based on the specific recovery of the uterus, it is best to listen to the doctor’s opinion. Since everyone’s situation is different, it is important to choose the right time for your own IUD.