Debranching visceral stent graft and methods for use
View Patent ↗A visceral double-barreled main body stent graft and methods for its use, the stent graft comprises, a main body stent graft having distal and proximal ends, the main body stent graft's length ranges from about 100-120 mm and diameter at the proximal end ranges from about 30-45 mm, first and second lumens defined at the main body stent graft's distal end, the first lumen's diameter ranges from about 18-20 mm, the second lumen's diameter ranges from about 16-18 mm, the first and second lumens have about the same length from about 50-70 mm, the first lumen is secured to the second lumen along a shared length, and the main body stent graft defines a tubular wall that is contiguous with the first and second lumens such that any fluid entering the main body must exit through one of the first or second lumens.
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 main body stent graft has an as-deployed diameter at the proximal end in the range from about 18 mm to about 22 mm;
wherein the second leg is at least about 10 mm longer than the first leg; and
a first visceral limb coupled to the first leg in a unitary configuration, wherein the first visceral limb has a second bifurcation defining a third leg and a fourth leg, wherein the second bifurcation occurs immediately at a proximal end of the first visceral limb.
2. The debranching stent graft of claim 1 , wherein the first visceral limb has a length in the range from about 30 mm to about 50 mm.
3. The debranching stent graft of claim 1 , wherein each of the third leg and the fourth leg have a diameter of about 7 mm.
4. The debranching stent graft of claim 1 , further comprising:
a second visceral limb coupled to the second leg in a unitary configuration, wherein the second visceral limb has a third bifurcation defining a fifth leg and a sixth leg.
5. The debranching stent graft of claim 4 , wherein the second visceral limb has a length in the range from about 30 mm to about 50 mm.
6. The debranching stent graft of claim 4 , wherein each of the fifth leg and the sixth leg have a diameter of about 7 mm.
7. 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.
8. The method of claim 7 , further comprising:
introducing a second guidewire into the aorta via arterial access;
loading a second delivery catheter containing a second visceral limb onto the second guidewire;
moving the second delivery catheter along the second guidewire and introducing the second delivery catheter into the second leg of the debranching stent graft via arterial access; and
deploying a proximal end of the second visceral limb into the second leg of the debranching stent graft.