A vaso-occlusive device having a length, at least a portion of the length having a serpentine secondary shape when the device is in a relaxed condition. The vaso-occlusive device deliverable to a vasculature site such that as the device is deployed, it immediately forms along the wall of the vasculature...http://www.google.es/patents/US20030120302?utm_source=gb-gplus-sharePatente US20030120302 - Vaso-occlusive device with serpentine shape