Apparatus and methods are disclosed for medical treatment comprising bone, tissue or duct dilatation using inflatable dilatation elements together with apparatus and techniques for tensioning, stretching, folding, and/or wrapping the dilatation elements externally as well as in situ to facilitate insertion,...http://www.google.es/patents/US7488337?utm_source=gb-gplus-sharePatente US7488337 - Apparatus and methods for bone, tissue and duct dilatation
Apparatus and methods for bone, tissue and duct dilatation
