In some embodiments, an apparatus includes an elongated member, an expandable member coupled to the elongated member, and an outer sheath. The outer sheath, which can be constructed from a different material than the expandable member, is disposed about the expandable member such that an outer surface...http://www.google.es/patents/US8043296?utm_source=gb-gplus-sharePatente US8043296 - Apparatus and methods for use of expandable members in surgical applications
Apparatus and methods for use of expandable members in surgical applications
