Percutaneously deployed vascular valves
View Patent ↗Described are percutaneous vascular valves ( 11 ) free of attached support structures and deployment systems ( 31 ) and methods for providing attachment of the valves within a vascular vessel.
1. A method for modifying blood flow in a vascular vessel, the method comprising:
percutaneously delivering an implant to a site within a vascular vessel, the implant including one or more pieces of flexible material, said one or more pieces of flexible material including a first piece of flexible material which includes a reinforced peripheral region extending along an outer edge of said first piece of flexible material, said reinforced peripheral region configured to extend longitudinally along and at least partially circumferentially around a wall of the vascular vessel upon implantation and having extending therefrom an array of vessel wall-penetrating elements that is more than two vessel wall-penetrating elements wide and said array includes vessel wall-penetrating elements arranged longitudinally and generally laterally with respect to one another; and
percutaneously deploying the implant in the vascular vessel so as to form a structure that selectively permits blood flow in a first direction and resists blood flow in a second direction, said percutaneously deploying including driving vessel wall-penetrating elements of said first array into a wall of the vascular vessel so as to secure said reinforced peripheral region to said vascular vessel wall with said reinforced peripheral region extending longitudinally along and at least partially circumferentially around the vascular vessel wall.
2. The method of claim 1 , wherein said vessel wall-penetrating elements include barbs.
3. The method of claim 1 , wherein said one or more pieces of flexible material include an adhesive applied thereto.
4. The method of claim 1 , wherein said reinforced peripheral region has a thickness greater than a central portion of said first piece of flexible material.
5. The method of claim 1 , wherein said vessel wall-penetrating elements include hooks.
6. The method of claim 2 , wherein said barbs penetrate said first piece of flexible material.
7. The method of claim 1 , wherein said first piece of flexible material has an intermediate region that extends inwardly of peripheral edges of the first piece of flexible material, said first array of vessel wall-penetrating elements extending from said intermediate region.
8. The method of claim 1 , wherein said first piece of flexible material contains collagen.
9. The method of claim 1 , wherein said first piece of flexible material comprises an extracellular matrix material.
10. The method of claim 1 , wherein said first piece of flexible material has remodelable properties.
11. The method of claim 10 , wherein said extracellular matrix material comprises submucosa.
12. The method of claim 1 , wherein said structure includes a valve having two or more leaflets.
13. The method of claim 1 , wherein said one or more pieces of flexible material comprise collagen, and wherein said percutaneously attaching includes delivering energy to facilitate attachment of said portions to the walls.
14. The method of claim 13 , wherein said energy includes electromagnetic radiation.
15. The method of claim 14 , wherein said energy is selected from microwave, radio frequency, laser, and ultraviolet light energy.
16. The method of claim 13 , wherein an energy-absorbing substance is provided in contact with said portions, and wherein said energy activates the energy-absorbing substance to attach said portions to the walls.
17. The method of claim 13 , wherein the energy welds said portions to the walls.
18. The method of claim 1 , wherein said percutaneously delivering comprises deploying the one or more pieces of flexible material from a lumen of a percutaneously advancable device.
19. The method of claim 18 , wherein said percutaneously delivering comprises deploying a delivery structure from the lumen, the delivery structure including the one or more pieces of flexible material releasably held to an expandable element.
20. The method of claim 19 , wherein the expandable element includes a balloon.
21. The method of claim 18 , wherein the expandable element includes a wire structure.
22. The method of claim 2 , wherein said barbs include microbarbs having a diameter ranging from about 0.0005 inches to about 0.100 inches.
23. The method of claim 2 , wherein said barbs include microbarbs having a diameter of up to about 0.010 inches.
24. The method of claim 23 , wherein said diameter is at least about 0.005 inches.
25. The method of claim 2 , wherein said barbs include microbarbs having a length ranging from about 0.001 inches to about 0.50 inches.
26. The method of claim 2 , wherein said barbs include microbarbs having a length of up to about 0.100 inches.
27. The method of claim 26 , wherein said length is at least about 0.01 inches.