To get started is to sort out what constitutes IUDs. Already from the name it is clear that they are introduced into the uterine cavity. Introduction is performed exclusively gynecologist, as the uterus, unlike the vagina, is an aseptic environment, and in the case of aseptic neglect laws that can make a serious infectious disease.
IUD – a small device that has several species and is usually made of plastic with the addition of copper. Sometimes you can see the helix with a small amount of silver or gold – they are more efficient (reduce inflammation) but also expensive.
The main effect of this contraceptive aimed at creating a barrier to the penetration of sperm into the cavity of the uterus. Copper, which is part of the Navy, promotes the production of natural liquid having spermatic action that stops the movement of the sperm and does not allow them to connect with the egg. If it did not work and fertilization did come, it triggers another action – in the uterus decreases the amount of the endometrium, which does not allow the egg to cling to its walls.
What are the types of IUDs? They can be very diverse: from metal and plastic, different in shape, size and hardness. If the classification based on the generation of intrauterine contraceptive can distinguish 4 types of spirals:
- The first generation is represented by inert intrauterine device (IUD). The most common was the loop Lips – Navy S-shaped. But since 1986 the inert IUDs are not recommended because of their low efficiency, and greater likelihood of loss Navy.
- The second generation is represented by copper-containing IUDs spirals like copper t 380a. This tool is very effective, and is quite popular in Indian as well as International users. Though its working mechanism was deemed to be little complex, yet copper iud India are one of the best. Copper t manufacturers India claim that even if fertilization occurs and the embryo in place on the wall of the uterus, or will soon be expelled.
- Third-generation Navy presented spirals, which can be left within 5 years. To extend the life of the contraceptive spiral with new techniques have been developed to the destruction of the copper has been slowed down, and the spiral period has lasted without compromising its effectiveness (adding a silver rod, increasing the thickness of the copper wire).
- The fourth generation is represented by the Navy, which contain hormones. This helix generally T-shaped, wherein the leg is filled with levonorgestrel or progesterone. The hormone is released gradually into the uterus, under its systematic long-term exposure atrophied endometrium is suppressed ovulation, and increases the viscosity of cervical fluid that inhibits the ability of sperm by promoting the uterus into the fallopian tubes.
What IUD is better?
Finally, the fourth generation, which has been modified intrauterine spiral, was supplemented properties of oral contraceptives and spermicides. Such an action requires additional protection from unwanted pregnancy, the treatment effect by metered injection of microscopic doses of hormones, reducing the side effects associated with the installation of a spiral- reduces painful menstruation, their duration and scope, and also there is the prevention of inflammation and early menopause.