A solid embolic material that is capable of filling irregularly shaped and asymmetrical vascular defects in a controlled and predictable manner, without the difficulties associated with delivery of the embolic material through a microcatheter and containment of the embolic material in a defect. A detachable...http://www.google.ca/patents/US7338511?utm_source=gb-gplus-sharePatent US7338511 - Solid embolic material with variable expansion
