The present invention provides methods for treating conditions such as abdominal aortic aneurysms and the like which involve the direct placement of a bifurcated graft in the afflicted area. The surgical procedures can be performed proximally, from above the junction of the abdominal aorta and the renal...http://www.google.es/patents/US5591228?utm_source=gb-gplus-sharePatente US5591228 - Methods for treating abdominal aortic aneurysms