A catheter delivered device to close a septal defect, the device comprising a cylindrical shaft of metal or polymeric material with concentric parallel cuts through the wall of the device which create flattened support struts. The center of the support struts move radially away from the axis in a hinge...http://www.google.fr/patents/US6117159?utm_source=gb-gplus-shareBrevet US6117159 - Apparatus and method for closing a septal defect
