The generic name for Mannitol is Levonorgestrel IUD System. Generally, the Levonorgestrel IUD System can be put on 3 to 7 days after a clean menstrual period after laparoscopic surgery. It usually takes 10 to 15 minutes to apply the levonorgestrel IUD, which can keep the cervix, the intrauterine environment and the ovaries in a state that is not suitable for fertilization, thus obtaining a reliable contraceptive effect. It can also treat excessive menstruation, adenomyosis and endometriosis. After laparoscopic surgery, it is necessary to wait for 3 to 7 days after the next menstrual period to put on the levonorgestrel intrauterine device system, mainly to ensure that the uterus, ovaries and other functions are normal. You need to prohibit sexual intercourse for 3 days before you put on the levonorgestrel IUD, and you need to check the leukorrhea routine to make sure that there is no infection before you do so. After the IUD should pay attention to rest, one week to avoid heavy work and strenuous exercise, half a month to avoid tub baths and sexual intercourse. For details, it is recommended to consult a professional doctor.