This invention is a medical device and a method of using it. The device is a foldable stent or stent-graft which may be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded. The expandable stent structure utilizes at least one torsional...http://www.google.fr/patents/US6001123?utm_source=gb-gplus-shareBrevet US6001123 - Folding self-expandable intravascular stent-graft
