Etonogestrel implant

Implanon is 40 mm in length and 2 mm in diameter. It is composed of a solid core of Evatane with the crystals of etonogestrel imbedded within the core. Surrounding the core is a thin layer of evatane (0.06 mm thick) that controls the rate at which etonogestrel is released. The rigidity of the implant pertains to its ease of removal and resistance to fracture during removal.