Prosthetic heart valve formation
AssigneeBoston Scientific Scimed, Inc.
InventorsPeter G. Edelman, Horng-Ban Lin, Scott Fisher, Jeffrey S. Lindquist, Huisun Wang, Richard C. Gunderson
Life of this patent
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Abstract
A prosthetic heart valve includes a base and a plurality of polymeric leaflets. Each leaflet has a root portion coupled to the base, and each leaflet has an edge portion substantially opposite the root portion and movable relative to the root portion to coapt with a respective edge portion of at least one of the other leaflets of the plurality of leaflets. Each leaflet includes) at least two polymers along at least one portion of the leaflet, and each leaflet has a composition gradient of each of the at least two polymers along at least one portion of the leaflet.
Claims16
A prosthetic heart valve comprising:
- a base;
- a plurality of polymeric leaflets, each leaflet having a root portion coupled to the base, each leaflet having an edge portion opposite the root portion and movable relative to the root portion to coapt with a respective edge portion of at least one of the other leaflets of the plurality of leaflets, each leaflet comprising at least two polymers;
- wherein one of the at least two polymers is in the form of a plurality of fibers at least partially embedded in the other polymer and extending from the root portion to the edge portion within each leaflet;
- wherein the fibers are arranged such that a fiber concentration gradient is formed from the root portion to the edge portion within each leaflet such that there is a continuously decreasing concentration of fibers in a direction from the root portion to the edge portion within each leaflet;
- and
- wherein each leaflet has a uniform thickness.
A prosthetic heart valve comprising:
- a base;
- a plurality of polymeric leaflets, each leaflet having a root portion coupled to the base, each leaflet having an edge portion opposite the root portion and movable relative to the root portion to coapt with a respective edge portion of at least one of the other leaflets of the plurality of leaflets, each leaflet comprising at least two polymers;
- wherein one of the at least two polymers is in the form of a plurality of fibers at least partially embedded in the other polymer of each leaflet, wherein the plurality of fibers are arranged along an axis from the root portion to the edge portion of each leaflet, and
- wherein the plurality of fibers arranged along the axis varies such that the number of fibers decreases continuously along the axis in a direction from the root portion to the edge portion of each leaflet to form a fiber concentration gradient;
- and
- wherein each leaflet has a uniform thickness.
Dependencies are inferred from the claim text.