Endoluminal prosthesis and tissue separation condition treatment method

1. A vascular dissection-treating endoluminal prosthesis comprising:

a coiled, generally helically extending body;

a graft material covering the entire coiled body to create a coiled stent graft movable between radially expanded and radially contracted conditions;

the coiled body comprising laterally spaced-apart, longitudinally extending rail elements and transversely extending connector elements connecting the rail elements;

said coiled stent graft having generally helically extending turns with first and second generally helically extending edges and a width measured perpendicular to said edges, said stent graft placeable in the radially contracted condition for placement and in the radially expanded condition for use; and

said stent graft, when in the radially expanded condition, constructed to have at most 2 turns and to press outwardly against a wall within an aortic arch of a patient so to force any separated intimal lining back against a remainder of the wall.

2. The endoluminal prosthesis according to claim 1 wherein the coiled stent graft has an average stent graft diameter to turns-width ratio from about 0.8 to 1 to about 2.4 to 1 when in the radially expanded condition.

3. The endoluminal prosthesis according to claim 1 wherein said stent graft comprises a radiopaque marker.

4. The endoluminal prosthesis according to claim 1 wherein the first edge of one turn lies adjacent to the second edge of an adjacent turn when in the radially expanded condition.