| 摘要 |
A modular intraluminal stent graft. The intraluminal stent graft is bifurcat ed having a primary section and a secondary section extending therefrom. The primary section tapers from a larger diameter at an upstream end to a smaller diamet er at a downstream end. The downstream end of the primary section has a pair of independent openings each having an expanded diameter. The secondary section provides a first endoleg having an upstream end that is received through the expanded diamete r of one opening of the primary section, and a second endoleg having an upstream end that is received through the second opening of the primary section. The upstream end s ofeach endoleg, in its expanded state, is larger than the downstream portion of the respective endolegs and expands within the primary section to help assemble the graft i n situ. The first and second endolegs also expand within the respective openings each is received within to assemble the stent graft in situ as well. The primary section is positioned within a blood vessel trunk, whereas the endolegs of the secondary section are positioned within a blood vessel branched from the blood vessel trunk. A typical application would be to place the primary section within the abdominal aorta infrarenally, with the endolegs positioned in the ipsilateral and contralaterial iliacs, respectively. By minimizing the number of stent segments in the primary section of the stent graft a lower delivery profile is achieved. |
