Patent ID: 8083790

Claim:
A composite stent-graft device comprising: a multi-layer graft including an elongate outer tube concentrically disposed over an inner tube; a plurality of stents each comprising a single strand of material in the form of a ring, each stent expandable in a radial direction; the stents supported in spaced apart relationship between said tubes, each of said stents formed of a single segment of material having only two opposed stent ends, the stent ends in overlapping movable engagement with each other, each opposed stent end being of a reduced thickness, as measured in the radial direction, in comparison to the remainder of the stent, the opposed stent ends each having ratchet teeth thereon for mutual engagement for providing finite adjustability therebetween, each of said stents having a longitudinal expanse; each of said stents being expandable between a radially contracted position and a radially expanded condition without substantial change in said longitudinal expanse of each of said stents.