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宫内节育器又称“避孕环”。它是一种简便、安全,有效的长效避孕方法,多年来深受广大妇女欢迎。它的避孕原理主要是改变宫腔内环境,使之不利于孕卵着床和生长,从而达到避孕的目的。 “避孕环”种类很多,经常使用的有金属环、塑料环、硅胶环等。其形状多种多样,轻巧又富于弹性。最近又新研制出一种释放激素的避孕环也正在临床上应用。但是,当前使用最多的是不锈钢金属单环节育
IUD, also known as “contraceptive ring ”. It is a simple, safe and effective long-term contraceptive method that has been well received by women for many years. Its principle of contraception is mainly to change the intrauterine environment, so that it is not conducive to implantation and growth of the pregnant egg, so as to achieve the purpose of contraception. “Contraceptive ring ” many types, often used metal ring, plastic ring, silicone ring and so on. Its variety of shapes, lightweight and flexible. Recently, a newly developed hormone releasing ring is also being used clinically. However, the most commonly used current is stainless steel single ring birth control