Endoluminal prosthesis adapted to resist migration and method of deploying the same

1. An endoluminal prosthesis for treatment of a condition in a main lumen in the vicinity of a branch lumen, said prosthesis adapted to resist migration, said prosthesis comprising:

a substantially tubular main stent adapted for placement in the main lumen, the main stent comprising a plurality of main stent members;

a substantially elbow-shaped shaft formed from a plurality of parallel main stent members in contact with each other, the shaft having a free end comprising a stopper;

a substantially tubular anchor stent pivotally connected to said main stent and adapted for placement in the branch lumen; and

a collar coupled to the anchor stent, the collar being slidingly coupled to the shaft to effect the pivotal connection.

2. The prosthesis of claim 1 , wherein said anchor stent is adapted to be oriented substantially perpendicular to said main stent in a post-deployment configuration.

3. The prosthesis of claim 1 , wherein said stopper limits movement of said collar at the free end of the shaft.

4. The prosthesis of claim 1 , wherein said main stent is self-expandable.

5. The prosthesis of claim 1 , wherein said anchor stent is balloon-expandable.

6. The prosthesis of claim 1 , wherein said main stent is a bifurcated stent.

7. The prosthesis of claim 1 , wherein said main stent comprises an expandable wire structure.

8. The prosthesis of claim 1 , wherein said main stent comprises a laser cut metallic structure.

9. The prosthesis of claim 1 , wherein said main stent comprises a tubular member rigidified by a network of channels inflated by a filler material.

10. The prosthesis of claim 1 , wherein said anchor stent comprises an expandable wire structure.

11. The prosthesis of claim 1 , wherein said anchor stent comprises a laser cut metallic structure.

12. The prosthesis of claim 1 , wherein said anchor stent comprises a tubular member rigidified by a network of channels inflated by a filler material.

13. A method of endoluminally deploying an endovascular prosthesis for treatment of an abdominal aortic aneurysm, the prosthesis being adapted to resist migration and comprising:

a main stent adapted for placement below the renal arteries;

a substantially elbow-shaped shaft having a fixed end coupled to and extending outwardly from the main stent, the shaft having a free end comprising a stopper;

an anchor stent adapted for placement in a renal artery and pivotally connected to the main stent; and

a collar coupled to the anchor stent, the collar being slidingly coupled to the shaft to effect the pivotal connection, said method comprising the steps of:

advancing a first guide wire for the anchor stent through the renal artery;

advancing a second guide wire for the main stent through the aorta;

advancing the main stent over the second guide wire to endoluminally position the prosthesis at a preselected position in the aorta;

pivoting and advancing the anchor stent over the first guide wire into position within the renal artery by sliding the collar along the shaft;

expanding the anchor stent within the renal artery; and

expanding the main stent within the aorta.

14. The method of claim 13 , wherein said step of expanding the anchor stent within the renal artery further comprises the steps of:

introducing a filler material into a network of channels within the anchor stent;

inflating the anchor stent via the filler material; and

rigidifying the anchor stent.

15. The method of claim 13 , wherein said step of expanding the main stent within the aorta further comprises the steps of:

introducing a filler material into a network of channels within the main stent;

inflating the main stent via the filler material; and

rigidifying the main stent.