A delivery system for placement of implantable occlusive devices allows placement of the devices place at selected treatment sites in the vascular system. Occlusive filaments produced from gel polymers are delivered by apparatus comprising various grippers, engagers, and couplers that are capable of...http://www.google.es/patents/US20040161451?utm_source=gb-gplus-sharePatente US20040161451 - Soft filament occlusive device delivery system
