Essure-dispositivoEssure, manufactured by Bayer, is called a “permanent birth control” device that blocks sperm from meeting egg.

A pair of small, flexible metal coils are nonsurgically  inserted into a woman’s fallopian tubes, after which tissue grows around the coils, creating a “natural” barrier, according to the maker.

Essure has now been implanted in over 600,000 women since the FDA approved it in 2002 and is considered 99.83% effective. It is nonreversible, so I’m not sure why it’s not called a “permanent sterilization” device. Sounds like verbal gerrymandering.