Endoluminal prosthesis comprising a valve and an axially extendable segment
The present embodiments provide a prosthesis comprising first and second segments, and an axially extendable segment coupled to the first and second segments. A valve is coupled to at least one of the axially extendable segment or the second segment. The axially extendable segment comprises a first state in which the valve at least partially overlaps with the first segment, and the axially extendable segment comprises a second state in which the valve lacks an overlap with the first segment.
1. A prosthesis having an inflow end and an outflow end that is downstream of the inflow end, the prosthesis comprising:
a first segment having a proximal end and a distal end;
a second segment having a proximal end and a distal end;
an axially extendable segment having a proximal end and a distal end and coupled to the first and second segments; and
a valve,
wherein the valve lacks an overlap with the first segment when the valve is positioned at a location downstream of the first segment in a delivery state of the axially extendable segment, and
wherein the valve at least partially overlaps with the first segment in a deployment state of the axially extendable segment.
2. The prosthesis of claim 1 , wherein the axially extendable segment is secured to each of the first and second segments in both delivery and deployed states.
3. The prosthesis of claim 1 , wherein a proximal end of the axially extendable segment is coupled to a proximal end of the first segment, and a distal end of the axially extendable segment is coupled to a proximal end of the second segment.
4. The prosthesis of claim 1 , wherein the first and second segments at least partially overlap with one another in the deployment state, and wherein the first and second segments lack an overlap in the delivery state.
5. The prosthesis of claim 1 , wherein the axially extendable segment comprises a plurality of first wire segments extending in a first direction and a plurality of second wire segments extending in a second direction, wherein the plurality of first wire segments intersect with the plurality of second wire segments.
6. The prosthesis of claim 5 , further comprising at least one fabric segment disposed between the first and second wire segments of the axially extendable segment.
7. The prosthesis of claim 1 , wherein the first and second segments at least partially overlap with one another when the axially extendable segment is in the deployment state, and the first and second segments lack an overlap with one another when the axially extendable segment is in the delivery state.
8. The prosthesis of claim 1 , wherein the first segment comprises a balloon-expandable stent.
9. The prosthesis of claim 1 , wherein the second segment comprises a self-expandable stent.
10. The prosthesis of claim 1 , wherein the second segment comprises a graft coupled to a stent framework, wherein the graft comprises a distal region having a diameter larger than a proximal region.
11. The prosthesis of claim 10 , further comprising at least one fenestration provided in the graft of the second segment.