宫内节育器(IUD)是我国妇女常用的长效避孕工具,其位置下移常可导致带器妊娠。IUD异位包括嵌顿及异位子宫外,不仅可造成取器困难及失败,偶可合并脏器损伤,且还可引起出血及疼痛。IUD的定位诊断甚为重要,现将IUD移位和异位的定义、IUD的定位诊断方法、临床意义、优缺点及选择综述如下。 IUD的正常位置、移位和异位的定义 一、IUD正常位置 应位于子宫腔底部中央,节育器的上缘距子宫底内膜层 IUD (IUD) is a long-term contraceptive commonly used by women in our country. Its position may often lead to pregnancy with a device. Ectopic IUD, including incarceration and ectopic uterine, can not only make it difficult and unsuccessful, but also combined with organ damage, and can also cause bleeding and pain. IUD positioning diagnosis is very important, now IUD displacement and ectopic definition, IUD positioning diagnosis, clinical significance, advantages and disadvantages and options are summarized below. IUD normal position, displacement and ectopic definition First, the normal position of the IUD should be located in the bottom of the central uterine cavity, the upper edge of the IUD away from the uterine endometrium