Onyx HD-500

Condition: Brain Aneurysms, Embolic liquid material

Full Study Name

Onyx HD-500: Onyx Liquid Embolic System for the Treatment of Intracranial Aneurysms (IRB no. 15410)


The purpose of this medical procedure is to treat an aneurysm with the liquid material Onyx® HD-500. The liquid material, which is placed within a brain blood vessel aneurysm, is expected to embolize (block or reduce blood flow) at the site of the aneurysm, which may help reduce symptoms in patients. Onyx® HD-500 is a Humanitarian Use Device (HUD), a designation for devices that will be used to treat fewer than 4,000 people a year.

Financial disclosure: Michael Alexander, MD, may receive consulting fees, honoraria, gifts, or other "in kind" compensation from the sponsor for purposes not directly related to the reasonable costs of conducting this medical procedure.

Principal Investigator

Michael Alexander, MD