BRAIDED MODULAR STENT WITH HOURGLASS-SHAPED INTERFACES

摘要

A braided modular stent (10) comprising a first component (12) and a second component (18), each component comprising an hourglass-shaped interface (16, 20) having a reduced diameter section (26) positioned between two sloped sections (24). Each sloped section (24) extends between the reduced diameter section (26) and one of a plurality of nominal diameter sections (25). The reduced diameter section (26) has a greater radial strength than the nominal diameter sections (25). One of the components may have a sealing region (30), such as a circumferential elevation (31), for providing an endoleak-resistant seal between the stent and a body lumen. One exemplary method for fabricating a circumferential elevation (31) comprises affixing a plurality of filaments, such as sutures (45), between overlaps of braided filaments in one region (40) and overlaps in another region (42).