Intraluminal stent graft
View Patent ↗A method of making a tubular intraluminal graft in the form of a tubular diametrically adjustable stent having a tubular covering of porous expanded polytetrafluoroethylene which is less than 0.10 mm thick. The covering may be on the exterior surface of the stent, or on the interior surface of the stent, or both. The covering may be affixed to the stent by an adhesive which is preferably fluorinated ethylene propylene.
1. A tubular intraluminal graft comprising:
a) a tubular, diametrically adjustable stent having an exterior surface, a luminal surface and a wall
b) a tubular covering affixed to the tubular diametrically adjustable stent, the tubular diametrically adjustable stent having an enlarged diameter to a collapsed diameter, said tubular covering being less than about 0.10 mm thick, and said tubular covering having an exterior surface, a luminal surface and a seam extending from the exterior surface through to the luminal surface of the tubular covering.
2. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to the exterior surface.
3. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to the luminal surface.
4. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to both the exterior and luminal surfaces.
5. A tubular intraluminal graft according to claim 1 , wherein the tubular diametrically adjustable stent is a self-expanding stent.
6. A tubular intraluminal graft according to claim 1 , wherein the tubular diametrically adjustable stent is a Nitinol stent.
7. A tubular intraluminal graft according to claim 1 , wherein the tubular covering is of porous expanded PTFE.
8. A tubular intraluminal graft according to claim 7 , wherein the tubular covering of porous expanded polytetrafluoroethylene is adhesively affixed to the tubular diametrically adjustable stent.
9. A tubular intraluminal graft according to claim 8 , wherein the tubular covering is adhesively affixed to the luminal surface of the tubular diametrically adjustable stent.
10. A tubular intraluminal graft according to claim 1 , wherein the tubular covering is affixed to the exterior surface of the tubular diametrically adjustable stent.
11. A tubular intraluminal graft according to claim 10 , wherein the tubular covering is sutured to the tubular diametrically adjustable stent.
12. A tubular intraluminal graft according to claim 11 , wherein the tubular diametrically adjustable stent is sutured to a longitudinal end of the tubular covering.
13. A tubular intraluminal graft according to claim 1 , wherein the tubular covering is affixed to the luminal surface of the tubular diametrically adjustable stent.
14. A tubular intraluminal graft according to claim 13 , wherein the tubular covering is sutured to the tubular diametrically adjustable stent.
15. A tubular intraluminal graft according to claim 14 , wherein the tubular diametrically adjustable stent is sutured to a longitudinal end of the tubular covering.
16. A tubular intraluminal graft according to claim 1 , wherein said enlarged diameter is at least 1.5 times the collapsed diameter.