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Essure is a permanent, non-surgical transcervical sterilization procedure for women developed by Conceptus Inc., a subsidiary of Bayer AG.〔Conceptus Inc. was acquired by Bayer AG of Germany on June 5, 2013.〕〔(【引用サイトリンク】title=Essure Permanent Birth Control )〕 It was approved for use in the United States on November 4, 2002.〔 Two economic studies, one of which implemented Essure as an in-office procedure, suggest that Essure could be more cost-effective than laparoscopic bilateral tubal ligation.〔 Since 2013, the product has been the subject of controversy with women complaining of severe side effects leading to surgical extraction,〔 and campaigner Erin Brockovich hosting a website where women can share their stories after having the procedure.〔〔 ==Procedure== The procedure takes about 10 minutes, for a trained physician to perform and can be performed in a physician's office. General anesthesia is not required. Despite this, some women have reported considerable pain during the procedure.〔http://www.marketwatch.com/story/conceptusr-to-promote-gynecare-thermachoicer-to-us-physician-offices-2010-11-10?reflink=MW_news_stmp〕 Small, flexible inserts are placed into the fallopian tubes by a catheter passed from the vagina through the cervix and uterus. The insert contains inner polyethylene terephthalate fibers to induce inflammation causing fibrotic reaction and is held in place by flexible stainless steel inner coil and a dynamic outer nickel titanium alloy coil.〔Miño M, Arjona JE, Cordón J, Pelegrin B, Povedano B, Chacon E. Success rate and patient satisfaction with the Essure sterilisation in an outpatient setting: a prospective study of 857 women. BJOG. 2007 Jun;114(6):763-6.〕 Once in place, the device is designed to elicit tissue growth in and around the insert over a period of three months to form an occlusion or blockage in the fallopian tubes; the tissue barrier formed is supposed to prevent sperm from reaching an egg. Unlike other forms of tubal ligation, no general anaesthetic nor incision through the abdomen is required. Similar to some other methods of birth control, initially additional forms of birth control must be continued for 3 months to prevent pregnancy until the method's effectiveness can be confirmed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Essure」の詳細全文を読む スポンサード リンク
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