Stent valves and uses of same
The invention includes a medical device and more specifically relates to a valve found generally within a frame. In a preferred device, the frame preferably comprises a self-expanding stent frame, and the valve has at least one expandable and contractible pocket member within the stent frame for resisting and permitting fluid flow, respectively.
1. A percutaneously implantable vascular stent valve device, comprising:
a percutaneously implantable frame having a longitudinal axis and an inner lumen;
a valve connected to the frame and comprising two or more flexible leaflets located at least partially within the frame, the two or more leaflets defining a valve orifice between upper portions of the leaflets which extend across the lumen of the stent and have inner segments that are moveable into and out of contact with one another to close and open the valve orifice, respectively; and
wherein said upper portions of adjacent leaflets of the two or more leaflets have respective peripheral segments that are positioned inside the frame and that are sewn together by a linear series of suture stitches to create sewn-closed leaflet material segments inside the frame and between an inner surface of the frame and said inner segments, said sewn-closed leaflet material segments extending transverse to said longitudinal axis and said sewn-closed leaflet material segments occurring immediately adjacent to and defining an outer periphery of the valve orifice, with said sewn-closed leaflet material segments contributing to a reinforced connection of the leaflets to the frame.
2. The valve device of claim 1 , wherein:
the valve orifice has orifice termini spaced inward of the inner surface of the frame by a distance of about 1 to 5 mm.
3. The valve device of claim 1 , wherein the frame is a self-expanding frame.
4. The valve device of claim 1 , wherein the frame is a non-self-expanding frame.
5. The valve device of claim 1 , wherein the two or more flexible valve leaflets comprise collagen.
6. The valve device of claim 5 , wherein the two or more flexible valve leaflets comprise a material selected from the group consisting of pericardium, submucosa, and dura mater.
7. The valve device of claim 5 , wherein the two or more flexible valve leaflets comprise submucosa.
8. The valve device of claim 5 , wherein the two or more flexible valve leaflets comprise pericardium.
9. The valve device of claim 1 , which is a vein valve device.
10. The valve device of claim 1 , which is a heart valve device.
11. The valve device of claim 1 , wherein the frame comprises a radially expandable stent.
12. The valve device of claim 1 , wherein the frame has a first end with a first perimeter length, and a second end with a second perimeter length, and wherein the first perimeter length differs from the second perimeter length.