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The Essure system is a type of permanent birth control for women. It cannot be reversed.

During insertion of the Essure system, your health care provider uses flexible tube with a small camera (hysteroscope) inserted through the vagina, into the cervix and up to the uterus. Once the openings to the fallopian tubes are visualized, small metal and fiber coils are passed through the hysteroscope and into your fallopian tubes. The Essure system causes scar tissue to form around the coils, blocking your fallopian tubes and preventing sperm from reaching the egg.

The Essure system takes three months to become effective in preventing pregnancy, and in some women, it may take up to six months. During this time, you must use other contraceptive methods to prevent pregnancy. Essure doesn't offer protection from sexually transmitted infections (STIs).

Dec. 16, 2014