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Onyx® HD-500

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Onyx® is a non-adhesive liquid embolic agent used for the embolization of brain aneurysms.

  • Onyx HD500 is comprised of 20% EVOH (ethylene vinyl alcohol) copolymer dissolved in DMSO (dimethyl sulfoxide), and suspended micronized tantalum powder to provide contrast for visualization under fluoroscopy.
  • Onyx HD500 (20% EVOH) is an HDE device for the treatment of intracranial, saccular, sidewall aneurysms that present with a wide neck (≥ 4mm) or with a dome-to-neck ratio < 2 that are not amenable to treatment with surgical clipping.
  • Onyx HD500 can also be used in adjunctive therapy with Axium coils and stents.
Onyx® HD-500 Liquid Embolic System
Product Name Product Catalog Number
Onyx HD-500 105-8101-500

For the treatment of intracranial, saccular, sidewall aneurysms that present with a wide neck (≥ 4mm) or with a dome-to-neck ratio < 2 that are not amenable to treatment with surgical clipping.

Indications, contraindications, warnings and instructions for use can be found in the product labeling supplied with each device. CAUTION: Federal (USA) law restricts this device to sale by or on the order of a physician.

Humanitarian Device. Authorized by federal law for use in the intracranial, saccular, sidewall aneurysms that present with a wide neck (>4 mm) or with a dome-to-neck ratio < 2 that are not amenable to treatment with surgical clipping. The effectiveness of this device for this use has not been demonstrated.

CONTRAINDICATIONS: The use of Onyx LES is contraindicated when any of the following conditions exist: 1. When optimal catheter placement is not possible; 2. When provocative testing indicates intolerance to the occlusion procedure; AND 3: When vasospasm stops blood flow. Onyx Liquid Embolic System for Onyx HD-500 Essential Product Information (EPI).