An introducer for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method of treating and angeological disease using a bifurcated stent; an endoluminal stent having perpendicular...http://www.google.es/patents/US5938696?utm_source=gb-gplus-sharePatente US5938696 - Bifurcated endoluminal prosthesis