A catheter includes a distal end, a proximal end, an outer tube extending from the distal end to the proximal end, and an inner tube extending through the outer tube. The distal end including a corrugated section attached to an end of the inner tube and an asymmetric balloon attached to the outer tube...http://www.google.es/patents/US6951554?utm_source=gb-gplus-sharePatente US6951554 - Deflecting catheter
