作者在常用的宫内节育器的基础上,自制了肠线环,通过203例临床观察,发现脱器率明显下降,副作用明显减少。由于制备简单,尤其是较为满意地解决了常用宫内节育器脱器的难题,因而值得推广应用。 Based on the commonly used intrauterine devices, the authors made a gut loop and, through 203 clinical observations, found that the rate of ablation decreased significantly and the side effects were significantly reduced. Due to the simple preparation, especially the more satisfactory solution to the problem of commonly used IUD off, which is worth promoting the application.