An endovascular stent graft is provided for use in treating abdominal aortic aneurysms. The endovascular stent has a tapered section which allows it to accommodate markedly large aortas such as the abdominal aorta and still connects to standard modular aortic stent grafts. Methods of utilizing the stent...http://www.google.com.hk/patents/US6773454?utm_source=gb-gplus-share專利 US6773454 - Tapered endovascular stent graft and method of treating abdominal aortic aneurysms and distal iliac aneurysms