Onyx (interventional radiology)
In interventional radiology, Onyx is a trade name for a copolymer used for embolisation therapy, which involves the occlusion of blood vessels. It is a liquid embolic agent. Onyx is produced and sold by Medtronic.Components
Onyx consists of Ethylene Vinyl Alcohol Copolymer, soluted in Dimethyl-Sulfoxide. Depending on the desired character of the liquid, the concentration can be varied: For example, 6% EVOH or 8% EVOH. Micronized tantalum powder is added in order to maintain Radiopacity.Approval
Onyx was approved as 'Humanitarian Use Device ' for the treatment of saccular aneurysms that are not surgically removable by the Food and Drug Administration in the United States on April 11, 2007.
