Patent ID: 7955373
Filing Date: 2011-06-07
Classification: A61F

Abstract:
1. A stent-graft for defining a prosthetic fluid passage within a body lumen comprising a native fluid passageway, said stent-graft comprising: a tubular graft having a forward section configured to be located upstream in the body lumen; a pilot stent located within said forward section of said tubular graft configured to have a fully self-expanded diameter, after deployment independent of a main stent, that is less than that of the body lumen to permit fluid flow within the body lumen during deployment of said stent-graft; and said main stent located within said tubular graft and having a forward section located forward of said pilot stent and at least partially radially within said pilot stent, said main stent extending rearward of said pilot stent, said main stent having an expanded diameter approximating that of the body lumen, both said pilot stent and said main stent having a compressed diameter for delivery endoluminally, said pilot stent being configured to independently expand with respect to said main stent to the diameter that is less than that of the body lumen; said tubular graft being attached to said pilot stent and configured to be free to expand to permit fluid therethrough and therearound when said pilot stent is expanded and said main stent is not yet deployed; and said main stent being configured to expand said pilot stent and said tubular graft to a full diameter of the body lumen after being deployed.