Table 2.
Overview of copolymers
| Product name | Manufacturer | Component(s) | Radiopaque component | Formulationsa | Special characteristics |
|---|---|---|---|---|---|
| Onyx | Medtronic, Irvine, CA, USA | EVOH copolymer, micronized tantalum powder, DMSO | Tantalum | 18, 20, 34 | Long experience, efficacy and safety demonstrated in multiple studies |
| Squid | Balt, Montmorency, France | EVOH copolymer, micronized tantalum powder, DMSO | Tantalum | 12, 12LD, 18, 18LD, 34, 34LD | Smaller grain size of tantalum powder compared to Onyx |
| Menox | Meril Life Sciences, Gujarat, India | EVOH copolymer, micronized tantalum powder, DMSO | Tantalum | 18, 20, 34 | Similar to Onyx |
| PHIL | MicroVention, Aliso Viejo, USA | Polylactide-co-glycolide, polyhydroxyethyl-methacrylate, triiodophenol, DMSO | Triiodophenol (covalently bound to the copolymers) | LV, 25%, 30%, 35% | No preparation needed, lower degree of imaging artifacts |
EVOH ethylene vinyl alcohol, DMSO dimethyl-sulfoxide, PHIL precipitating hydrophobic injectable liquid, LD low density, LV low viscosity, anumbers indicate the viscosity in centipoise for Onyx and Squid and the concentration of the copolymer for PHIL