Patent ID: 7846194

Claim:
A side branch stent graft comprising a main tubular body of a biocompatible graft material and having a main lumen therethrough, a tubular side branch having a side branch lumen therethrough, the tubular side branch being stitched to the main tubular body so that the side branch lumen is in fluid communication with the main lumen, the tubular side branch extending from the main tubular body at an acute angle thereto, the tubular side branch comprising a proximal end where it is stitched to the main tubular body and a distal end, at least one external proximal zig-zag self expanding stent on the main tubular body proximal of the tubular side branch, at least one distal external zig-zag self expanding stent on the main tubular body distal of the tubular side branch, one internal zig-zag self expanding stent at the distal end of the main tubular body, a central external zig-zag self expanding stent which extends around both the main tubular body and the proximal end of the tubular side branch, and a reinforcing ring around the proximal end of the main tubular body and stitched thereto, the reinforcing ring around the proximal end of the tubular body comprises at least two turns of shape memory wire, each end of the shape memory wire terminating in a loop, the tubular side branch comprising a connection socket for an extension stent graft at the distal end of the tubular side branch, the connection socket comprising a first reinforcing ring around the tubular side branch at the distal end thereof, a second reinforcing ring spaced apart along the tubular side branch from the first ring and a connection socket zig zag resilient stent between the first and second reinforcing rings.