Aortic valve stent graft
View Patent ↗An implantable endoluminal prosthesis for replacing a damaged aortic valve is provided. In one embodiment, the prosthesis includes a balloon-expandable stent, a tubular conduit that extends into the ascending aorta, and a self-expanding stent. The tubular conduit extends across the balloon-expandable stent. The tubular conduit includes an artificial valve. The self-expanding stent extends across the tubular conduit into the ascending aorta. The balloon-expandable stent, the tubular conduit, and the self-expanding stent are coupled to provide unidirectional flow of fluid into the aorta and further into the coronary arteries. Also provided is a method for implanting the endoluminal prosthesis.
1. An endoluminal prosthesis comprising:
a first stent;
a tubular conduit comprising an aortic valve replacement, wherein at least a portion of the tubular conduit overlaps at least a portion of the first stent; and
a second stent that overlaps at least a portion of the tubular conduit,
wherein ones of the first stent, tubular conduit, and the second stent are coaxially arranged for unidirectionally passing fluid through the prosthesis, and
wherein the first and second stents lack an overlapping relationship with one another,
wherein the first stent and the tubular conduit are configured to allow fluid to pass unidirectionally therethrough,
wherein a distal end of the tubular conduit terminates at a location between proximal and distal ends of the second stent, and
wherein the second stent comprises at least one uncovered region, distal to the aortic valve replacement, to allow fluid to pass radially outside of an outer perimeter of the second stent after passing through the aortic valve replacement.
2. The endoluminal prosthesis of claim 1 , wherein the first stent comprises a balloon-expandable stent and the second stent comprises a self-expanding stent.
3. The endoluminal prosthesis of claim 2 , wherein the self-expanding stent at least partially surrounds the tubular conduit, and the tubular conduit at least partially surrounds the balloon-expandable stent.
4. The endoluminal prosthesis of claim 2 , wherein both the balloon-expandable stent and the self-expanding stent at least partially surround an exterior surface of the tubular conduit.
5. The endoluminal prosthesis of claim 1 , wherein the aortic valve replacement comprises an artificial valve.
6. The endoluminal prosthesis of claim 1 , wherein the aortic valve replacement is located at the distal end of the tubular conduit.
7. The endoluminal prosthesis of claim 1 further comprising one or more barbs.
8. The endoluminal prosthesis of claim 1 , wherein at least one of the first stent or the second stent comprises a braided bottle stent.
9. A prosthesis for replacing an aortic valve comprising:
at least first, second and third tubular members,
wherein the second tubular members comprises a valve,
and wherein ones of the first tubular member, second tubular member, and the third tubular member are coaxially arranged for unidirectionally passing fluid through the prosthesis
wherein the first tubular member exerts a force upon the coronary sinus and the third tubular member exerts a force upon the ascending aorta,
wherein the first tubular member and the second tubular member are configured to allow fluid to pass unidirectionally therethrough,
wherein a distal end of the second tubular member terminates at a location between proximal and distal ends of the third tubular member, and
wherein the third tubular member comprises a proximal zone having a first diameter and a distal zone having a second diameter, where the first diameter is narrower than the second diameter.
10. The prosthesis of claim 9 , wherein at least the first tubular member comprises a balloon-expandable stent.
11. The prosthesis of claim 9 , wherein at least the third tubular member comprises a braided bottle stent.
12. The prosthesis of claim 9 , wherein at least one of the first and third tubular members comprises a self-expanding stent.
13. The prosthesis of claim 9 , wherein the second tubular member comprises a tubular conduit, wherein the valve is located at a distal end of the tubular conduit.
14. The prosthesis of claim 9 further comprising one or more barbs.