Prosthesis having pivoting fenestration

1. A prosthesis system, comprising:

a graft having a tubular body with a proximal and distal end, a lumen between the proximal and distal ends, and a surface comprising a first biocompatible material;

at least one passageway extending through a sidewall of the graft;

a pocket spaced away from the passageway and disposed on an exterior surface of the graft, the pocket having an open end defining an opening, a closed end, and a cavity extending between the open end and the closed end, the open end being open to an exterior of the graft, wherein the pocket is configured to receive a tubular extension prosthesis extending between the pocket and the passageway to prevent fluid flow through the passageway to the exterior of the graft; and

a wire extending through the lumen of the graft and out from the lumen through the passageway, from the passageway through the opening, and from the opening into the cavity and engaging the surface of the graft that is covered by the pocket.

2. The prosthesis system of claim 1 further comprising a tubular extension prosthesis extending between the pocket and the passageway, wherein the tubular extension prosthesis sealingly engages the passageway and the pocket.

3. The prosthesis system of claim 1 , wherein the pocket comprises the first biocompatible material.

4. The prosthesis system of claim 1 , wherein the pocket is oriented longitudinally along the graft.

5. The prosthesis system of claim 1 , wherein the pocket opening faces the passageway.

6. The prosthesis system of claim 1 , wherein the pocket is oriented transverse to a longitudinal axis of the graft.

7. The prosthesis system of claim 1 , wherein the wire extends through the graft material at a location where the wire engages the surface of the graft that is covered by the pocket and back into the graft lumen.

8. The prosthesis system of claim 1 further comprising an inner stent ring attached to an inner surface of the tubular graft, wherein the pocket is disposed distally from the inner stent ring.

9. The prosthesis system of claim 1 , wherein the passageway comprises a pivot fenestration.

10. A system for sealing an unused passageway in a graft, the system comprising:

an expandable tubular graft having proximal and distal ends and a lumen between the proximal and distal ends;

at least one passageway extending through a sidewall of the tubular graft;

a pocket spaced away from the passageway and attached to an external surface of the tubular graft, the pocket defining an opening at a first end and being substantially closed at a second end;

a wire extending through the lumen and out of the lumen through the passageway and into the opening of the pocket and toward the second end that is substantially closed; and

an expandable tubular branch extension disposed over the wire between the pocket and the passageway to prevent fluid flow through the passageway to the exterior of the graft.

11. The system of claim 10 , wherein the tubular graft includes a sealing portion at the proximal end.

12. The system of claim 11 , wherein the pocket is disposed on a portion of the graft separate from the sealing portion.

13. The system of claim 11 , wherein the pocket is disposed at least partially over the sealing portion.

14. The system of claim 10 , wherein the tubular branch extension is expanded into sealing engagement with the pocket and the passageway.

15. The system of claim 10 , wherein the tubular branch extension sealingly engages the pocket and the passageway and the pocket and tubular branch extension are substantially crushed.

16. A method for sealing an unused passageway in a tubular prosthesis, the method comprising:

delivering a tubular graft to a body vessel, the tubular graft having proximal and distal ends and a lumen between the proximal and distal ends, the graft further having a passageway in a sidewall thereof, a pocket spaced away from the passageway, and disposed on an exterior surface of the graft, the pocket having an open end and a closed end and a cavity extending between the open end and the closed end, the pocket configured to receive a tubular graft extension extending between the passageway and the pocket, and a wire extending through the lumen of the graft and out of the lumen through the passageway and into the pocket cavity from the open end of the pocket toward the closed end of the pocket;

delivering an expandable tubular graft extension along the wire toward the pocket;

engaging the tubular graft extension with the pocket and the passageway;

expanding the tubular graft extension; and

sealing the tubular graft extension to the pocket and the passageway.

17. The method of claim 16 further comprising withdrawing the wire from the pocket through the tubular graft extension.

18. The method of claim 16 further comprising, in response to sealing the tubular graft extension to the pocket and the passageway, crushing the pocket and graft extension.

19. The method of claim 16 , wherein the pocket is disposed proximally from the passageway.

20. The method of claim 16 , wherein the pocket and the wire are aligned transverse to a longitudinal axis of the tubular graft.