Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
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How does it work?它如何工作？ of Intrauterine device (IUD)对宫内节育器（避孕环）
An IUD works by stopping sperm from reaching the egg. It does this by releasing copper into the body, causing an increase in white blood cells in the cervix, which kill sperm. 1宫内节育器工程，停止在精子到达卵子。它是通过释放铜进入人体，造成增加在白血细胞在子宫颈癌，其中杀死精子。 The IUD has one or two soft threads on the end that come through the opening at the neck of the womb (cervix) into the top of the vagina.该宫内节育器有一个或两个线程对软底来通过开放的颈部子宫（宫颈）到顶部的阴道。
IUDs also make it harder for the egg to travel along the fallopian tubes and settle in the womb.宫内避孕器，也使它更难鸡蛋，以沿输卵管和解决在子宫里。
Before an IUD is fitted, you will have an internal examination to determine the size of your womb, so that the IUD can be positioned in the correct place.前一宫内节育器是装上，您将有一个内部检查，以确定大小，您的子宫，使该宫内节育器可以定位在正确的位置。 It is also necessary to check whether you have any untreated sexually transmitted infections (STIs).这亦是必要的检查您是否有任何未经处理的性传染疾病（性传播疾病） 。
The IUD is inserted through the cervix and into the womb, while the vagina is held open as in a cervical smear test.该宫内节育器是通过插入子宫颈，进入子宫，而阴道是举行开放，在子宫颈抹片检验。 This will involve stretching the cervix slightly to get the IUD in. The whole procedure should take between 5-15 minutes.这将涉及伸展宫颈轻微获得宫内节育器英寸，整个程序应采取之间的5-15分钟。
You may ask for a local anaesthetic or painkillers such as ibuprofen before having the IUD fitted, as it may be slightly painful (especially if you have not had children and your cervix is not stretched) and you may get cramps afterwards.你可能会问，一个局部麻醉或止痛药，如布洛芬之前，有宫内避孕器装上，因为它可能会稍微痛苦的（特别是如果你有没有儿童和您的子宫颈癌是不会拉伸）和您可能会收到抽筋之后。 However, the injection itself can be painful so many people have the procedure without anaesthetic.然而，注射本身可以是痛苦，所以有很多人的程序，没有麻醉。
You may have to wait several weeks for an appointment with a doctor who is specially trained and experienced in fitting IUDs; this will mean there is less chance of the fitting being painful.您可能要等待几个星期为一的任命与医生谁是受过专门训练和有经验的装修宫内避孕器;这将意味着有较少的机会，正在装修的痛苦。
You may experience period-like pain and bleeding for a few days afterwards.您可能会遇到时期一样的疼痛，出血了数天之后。 You can take painkillers before and after to ease this.您可以采取的止痛药之前和之后，以纾缓这一点。
Once an IUD is fitted it will need to be checked by a doctor after the first month and then once a year after that to make sure that the device has not moved or caused any infection. Unless there are any complications, an IUD is effective in preventing pregnancy for between three and ten years from the time it is fitted.一旦宫内节育器是装上它，将需要检查的一名医生后的第一个月，然后每年一次之后，以确保该设备并没有移动或造成任何感染。除非有任何并发症， 1宫内节育器是有效的防止怀孕，为三至十年的时间，从它是装上。
