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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Intrauterine device (IUD)宫内节育器（避孕环）
An IUD is a rigid ‘T’ shaped contraceptive device made from plastic and copper that fits inside the womb (uterus). 1宫内节育器是一个刚性â € 〜 tâ € ™形避孕装置由塑料和铜适合内子宫（子宫） 。 It used to be called a ‘coil’.它使用被称为â € 〜 coilâ € ™ 。 An IUD has two very fine threads that come through the cervix opening and rest on the top of the vagina. Your GP or local family planning clinic or sexual health clinic (GUM) can fit an IUD. 1宫内节育器有两个很好的线程来通过子宫颈开放和休息对上方的阴道。你的家庭医生或当地计划生育诊所或性健康诊所（牙龈） ，可以适合一宫内节育器。
An IUD is usually fitted during the menstrual period. From the moment the IUD is fitted until the time it is taken out, the woman is protected against pregnancy. 1宫内节育器通常是装在月经期，从目前宫内避孕器是安装的时间，直到它采取的是，该名女子是保护，防止怀孕。
The IUD is between 98-99% effective with newer, more efficient models presenting even lower risks of failure.该宫内节育器是之间的98-99 ％ ，有效地与更新，更有效率的模式，介绍甚至更低的风险，失败的。 These softer, more flexible IUDs provide an even higher success rate because they are smaller and less likely to be pushed out of the womb.这些柔软，更灵活的宫内避孕器提供一个更高的成功率，因为它们体积较小，不太可能被赶出子宫。 One model has no plastic frame, just the copper tubing and so sits easier in the womb. 1模型没有塑胶框架，只是铜油管等坐在更容易在子宫里。 More recently, a hormone releasing IUD called the levonorgestrel-releasing intrauterine system (IUS) has been developed that is more effective.最近，生长激素释放宫内节育器称为左炔诺孕酮释放宫内系统（曼月乐® ）已制定更有效。 This IUD, however, is larger and thicker and so only really suitable for women who have already had children.这宫内节育器，然而，大和厚，所以只有真正适合妇女谁已经有儿童。 This is because women who have not had children have smaller cervixes.这是因为妇女谁没有子女有规模较小的宫颈。
IUDs are more effective in women over the age of 30, because they ovulate slightly less than younger women and are generally less fertile.宫内避孕器是更有效地在妇女的30岁以上，因为他们ovulate略少于年轻妇女和普遍不足的肥沃土壤。 IUDs are commonly used by women who have already had at least one child.宫内避孕器是常用的妇女谁已经有至少一个孩子。
