It's true the Adiana system for female sterilization isn't available anymore. The manufacturer stopped producing the Adiana system for financial reasons in 2012.
A type of permanent birth control for women, the Adiana system used low-level radiofrequency energy along with two small silicone pieces placed in each of the fallopian tubes. Scar tissue formed around the silicone inserts, blocking the fallopian tubes and preventing sperm from reaching an egg.
The Adiana system still provides permanent contraception for women who previously had the system placed in their fallopian tubes.