Debranching great vessel stent graft and methods for use

1. A debranching stent graft comprising:

a main body stent graft with a first bifurcation defining a first leg and a second leg, wherein the main body stent graft has a distal end and a proximal end; wherein the first leg and the second leg each have a diameter in the range from about 12 mm to about 18 mm;

a first great vessel limb coupled to the first leg at the distal end of the main body stent graft in a unitary configuration, wherein a second bifurcation in the first great vessel limb defines a third leg and a fourth leg; and

a second great vessel limb coupled to the second leg at the distal end of the main body stent graft in a unitary configuration, wherein a third bifurcation in the second great vessel limb defines a fifth leg and a sixth leg, wherein the first great vessel limb is coupled to the first leg via one or more of adhesive, sewing, bonding or welding, and wherein the second great vessel limb is coupled to the second leg via one or more of adhesive, sewing, bonding or welding.

2. The debranching stent graft of claim 1 , wherein the diameter of the main body stent graft at the proximal end ranges from about 18 mm to about 28 mm.

3. The debranching stent graft of claim 1 , wherein the first bifurcation occurs in the range from about 20 mm to about 45 mm from the proximal end of the main body stent graft.

4. The debranching stent graft of claim 1 , wherein the first great vessel limb is joined with the first leg via a seam.

5. The debranching stent graft of claim 4 , wherein the second bifurcation occurs approximately at the seam.

6. The debranching stent graft of claim 1 , wherein the first great vessel limb has a diameter at the proximal end in the range of about 14-16 mm.

7. The debranching stent graft of claim 1 , wherein each of the third leg and the fourth leg have a diameter in the range from about 7 mm to about 12 mm.

8. The debranching stent graft of claim 1 , wherein the main body stent graft has a diameter at the proximal end in the range from about 20 mm to about 28 mm, wherein the first bifurcation occurs in the range from about 25 mm to about 45 mm from the proximal end of the main body stent graft, wherein each of the third leg and the fourth leg have a diameter in the range from about 8 mm to about 12 mm.

9. The debranching stent graft of claim 1 , wherein the second leg defines at least one fenestration.

10. The debranching stent graft of claim 1 , further comprising:

a plurality of bi-directional anchor hooks attached to two adjacent stents at the proximal end of the main body stent graft.

11. The debranching stent graft of claim 1 , wherein the distance from the proximal end of the main body stent graft to the distal end of the first leg is in the range from about 30 mm to about 50 mm.

12. The debranching stent graft of claim 1 , wherein the distance from the proximal end of the main body stent graft to the distal end of the second leg is in a range from about 50 mm to about 70 mm.

13. A method for placement of a debranching stent graft, the method comprising:

introducing a guidewire into an aorta via arterial access;

loading a delivery catheter containing the debranching stent graft according to claim 1 onto the guidewire;

moving the delivery catheter along the guidewire and introducing the delivery catheter into the aorta via arterial access; and

deploying the debranching stent graft into one of the aorta or a lumen of a previously-placed stent graft within the aorta.

14. A method for placement of a debranching stent graft, the method comprising:

introducing a guidewire into an ascending aorta via arterial access;

loading a delivery catheter containing the debranching stent graft according to claim 1 onto the guidewire;

moving the delivery catheter along the guidewire and introducing the delivery catheter into the ascending aorta via arterial access; and

deploying the debranching stent graft into one of the ascending aorta or a lumen of a previously-placed stent graft within the ascending aorta.

15. A debranching stent graft comprising:

a main body stent graft with a first bifurcation defining a first leg and a second leg, wherein the main body stent graft has a distal end and a proximal end; wherein the first leg and the second leg each have a diameter in the range from about 12 mm to about 18 mm;

a first great vessel limb coupled to the first leg at the distal end of the main body stent graft in a unitary configuration, wherein a second bifurcation in the first great vessel limb defines a third leg and a fourth leg; and

a second great vessel limb coupled to the second leg at the distal end of the main body stent graft in a unitary configuration, wherein a third bifurcation in the second great vessel limb defines a fifth leg and a sixth leg, wherein the first great vessel limb has a length about 30 mm.

16. A debranching stent graft comprising:

a main body stent graft with a first bifurcation defining a first leg and a second leg, wherein the main body stent graft has a distal end and a proximal end; wherein the first leg and the second leg each have a diameter in the range from about 12 mm to about 18 mm;

a first great vessel limb coupled to the first leg at the distal end of the main body stent graft in a unitary configuration, wherein a second bifurcation in the first great vessel limb defines a third leg and a fourth leg;

a second great vessel limb coupled to the second leg at the distal end of the main body stent graft in a unitary configuration, wherein a third bifurcation in the second great vessel limb defines a fifth leg and a sixth leg; and

a radiopaque band disposed at the distal end of each of the first leg, the third leg and the fourth leg.