The generic name of Mannuelle is levonorgestrel intrauterine system (IUS) ring. If you have been wearing levonorgestrel IUS ring for more than a year and still continue to bleed, it may be that the ring has shifted or you are not comfortable with the ring, so you need to replace the ring if necessary. 1. ring displacement: ultrasound examination if the contraceptive ring shifted down, resulting in the phenomenon of continuous vaginal bleeding, need to be removed in time to replace. 2. to the ring is not adapted: under normal circumstances, wear levonorgestrel intrauterine sterilization system, in three months after a small amount of bleeding phenomenon, is normal, because the Man Yuele is levonorgestrel intrauterine slow-release system of contraceptive ring. Wearing a levonorgestrel IUD for more than a year and bleeding, indicating that the ring is not adapted to, need to be removed and replaced in a timely manner. Wearing levonorgestrel intrauterine system ring more than a year and still continue to bleed, need to go to the hospital as soon as possible, by the doctor according to the specific conditions, to formulate individualized diagnosis and treatment plan, so as not to delay the condition.