Coated magnetically responsive particles, and embolic materials using coated magnetically responsive particles

摘要

An embolic material comprising a polymerizable hydrophobic suspension of coated magnetically responsive particles (e.g. magnetite Fe3O4) suspended in a solvent monomer, a bulking agent, a radiopaque monomer, and an accelerant, and an initiator. The coated magnetically responsive particles preferably have a diameter of between about 20 and about 40 nm, and a magnetically responsive core with a diameter of between about 2 and about 20 nm.