Method of making an endoluminal vascular prosthesis

A method of making an endoluminal prosthesis comprising the steps of:

• using a flat sheet of woven material, the woven material including warp yarns and weft yarns interlaced at right angles to each other;
• cutting a graft material from the flat sheet of woven material such that the graft material includes a graft material longitudinal axis and the warp yarns are disposed at a first angle relative to the graft material longitudinal axis such that the warp yarns and graft material longitudinal axis are not parallel or perpendicular to each other;
• and
• rolling opposing edges of the graft material towards each other and securing the opposing edges together to form a tubular shape of the endoluminal prosthesis including a prosthesis longitudinal axis, wherein a projection of the warp yarns onto the longitudinal axis of the prosthesis at the location of the warp yarns is disposed at a second angle relative to the prosthesis longitudinal axis, wherein the second angle is such that the projection of the warp yarns at the location is not parallel or perpendicular to the prosthesis longitudinal axis.