Endoluminal prostheses including multiple helical wires

A stent-graft prosthesis comprising:

• a tubular graft;
• a first wire bent into a first waveform and spirally wrapped into a first helix having a plurality of windings that form a hollow cylindrical shape, the first wire having opposing first and second ends and a midportion extending therebetween, wherein the first wire is coupled to the tubular graft;
• and
• a second wire bent into a second waveform and spirally wrapped into a second helix having a plurality of windings that form a hollow cylindrical shape, the second wire having opposing first and second ends and a midportion extending therebetween, wherein the second wire is coupled to the tubular graft,
• wherein the first and second wires are disposed relative to each other such that the plurality of windings of the first wire and the plurality of windings of the second wire are disposed about a common longitudinal axis and the plurality of windings of the first wire and the plurality of windings of the second wire are axially offset from each other, with windings of the plurality of windings of the first wire interwoven between windings of the plurality of windings of the second wire along a length of the stent-graft prosthesis,
• wherein the first and second wires are not coupled to each other except through the tubular graft.

A stent-graft prosthesis comprising:

• a tubular graft;
• a first wire bent into a first waveform and spirally wrapped into a first helix having a plurality of windings that form a hollow cylindrical shape, the first wire having opposing first and second ends and a midportion extending therebetween, wherein the first wire is coupled to the tubular graft;
• a second wire bent into a second waveform and spirally wrapped into a second helix having a plurality of windings that form a hollow cylindrical shape, the second wire having opposing first and second ends and a midportion extending therebetween, wherein the second wire is coupled to the tubular graft;
• and
• a third wire bent into a third waveform and spirally wrapped into a third helix having a plurality of windings that form a hollow cylindrical shape, the third wire having opposing first and second ends and a midportion extending therebetween, wherein the third wire is coupled to the tubular graft,
• wherein each of the first, second, and third waveforms of the first, second, and third wires, respectively, have a generally sinusoidal configuration with a plurality of crowns and a plurality of struts with each crown being formed between a pair of opposing struts,
• wherein the first, second, and third wires are disposed relative to each other such that the plurality of windings of each of the first, second, and third wires are disposed about a common longitudinal axis and the plurality of windings of each of the first, second, and third wires are axially offset from each other, with windings of the pluralities of windings of the first, second, and third wires interwoven between each other along a length of the prosthesis,
• wherein the first, second, and third wires are not coupled to each other along at least the midportions thereof except through the tubular graft, and
• wherein the first end of the first wire is attached to a first strut of the third waveform of the third wire via a first elongated attachment component, the first end of the second wire is attached to a first strut of the first waveform of the first wire via a second elongated attachment component, and the first end of the third wire is attached to a first strut of the second waveform of the second wire via a third elongated attachment component.