Essure is a form of permanent birth control. During this procedure, a thin telescopic camera is passed thru the opening of the cervix, allowing the physician to see inside the uterus, specifically the openings of the fallopian tubes. Soft, flexible inserts are passed into the fallopian tubes.
Over the next 3 months, the inserts cause the body fibers to fill in the lumen of the fallopian tube creating a solid barrier. This barrier prevents sperm from reaching the egg, so that pregnancy cannot occur. A confirmation test, known as an hsg or hysterosalpingogram, is performed at 3 months to confirm the tubes are indeed blocked.
Until the test is completed & satisfactory results confirmed, alternate birth control should be used.