Patent ID: 8394136
Filing Date: 2013-03-12
Classification: A61F

Abstract:
1. A stent graft comprising a tubular body of a biocompatible graft material defining a main lumen therethrough, the tubular body comprising an internal surface, a fenestration in the tubular body, the fenestration in the tubular body of the stent graft comprising a ring of a resilient wire around its periphery whereby the fenestration is held open when the stent graft is released from a deployment device, an internal tube extending from the fenestration within and towards an end of the tubular body and being in fluid communication with the main lumen, the internal tube being fastened to the tubular body around the periphery of the fenestration, the internal tube having at least one self expanding stent thereon, the at least one stent being on the outside of the internal tube, whereby the internal tube is held open when the stent graft is released from a deployment device, only an end portion of the internal tube remote from the fenestration being flared and comprising a funnel shaped end portion, the funnel shaped end portion comprising an elliptical shape in cross section, the funnel shaped end portion engaged against only part of the internal surface of the tubular body leaving the main lumen open to fluid flow, the funnel shaped end portion comprising a reinforcing ring of a resilient wire and comprising stitches engaging it to the internal surface of the tubular body of the stent graft, whereby the end of the internal tube remote from the fenestration remains adjacent to part of the internal surface of the tubular body of the stent graft and facilitates access into the internal tube from the main lumen.