The principle of the third generation of Mycu IUD is "loving mother". Under the condition of human body fluids, according to the dissolution rate of copper and stent, this IUD can be placed for 15 years. It needs to be replaced at maturity and taken out before menopause. It is generally believed that the contraceptive inducement of copper-containing active IUD is that due to the long-term stimulation of IUD, the endometrium can produce aseptic inflammatory reaction and prostaglandin, destroy embryonic kinin, change tubal peristalsis, and make the operation of fertilized eggs out of sync with the development of endometrium. Thus affecting the implantation. The released copper ions can kill sperm and interfere with the metabolism of endometrial cells, which is not conducive to the development of fertilized eggs and blastocysts, thus playing a contraceptive role.
3-4 days after the safety ring bleeding, most women will have a small amount of bleeding. This is because the intrauterine device, as a foreign body, stimulates uterine contraction, causing the intrauterine device to rub against the endometrium and cause bleeding. Some people wear a ring and rub the endometrium of the cervical canal or endometrium to cause bleeding; Most women have little bleeding and do not need treatment, and they die within one week after being put on the ring. Menstrual volume increases in the early stage of Anhuan, especially in the first three months, some women's menstrual volume will increase to varying degrees, or menstrual period will be prolonged, or irregular drip bleeding will occur. This is mainly due to the friction between the contraceptive ring and the endometrium when the endometrium falls off, resulting in endometrial damage. Generally, it will naturally improve after three months.
T-shaped copper ring can be used for several years at most: its service life is five years, and its material is plastic as a bracket, which is a widely used contraceptive ring at home and abroad. It is easy to put into the uterus, but it has the disadvantage of high bleeding rate. Generally, the two ends of it are made into round beads at home to reduce the occurrence of bleeding caused by puncturing the uterine wall. Active y-ring: service life is 10 year. It is mainly made of stainless steel and contains copper and indomethacin. It is a relatively new type of active intrauterine device. The inner layer is mainly Y-shaped stainless steel wire, the middle layer is mainly a bracket wrapped with copper wire, and the outer layer is mainly a coil spring. This kind of active contraceptive device is not easy to cause bleeding and has few side effects, so it is often used in clinic.
Multi-load copper-containing contraceptive ring: the service life is 3 to 5 years, and the material is mainly polyethylene and copper wire. This kind of intrauterine device is very convenient to place and take out, and its clinical application effect is very good. Silicone rubber strip V-shaped contraceptive ring: the service life is 5 to 8 years, the shape is V-shaped, and the material is mainly stainless steel wire and silicone rubber tube. Because its V-shape is very similar to the shape of uterine cavity, the uniform distribution of copper wires can affect the implantation of uterine cavity, and because of its design characteristics, it can alleviate the discomfort during sexual life, so this kind of contraceptive ring has good contraceptive effect.