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US 7,189,259 B2Granted
Tissue material and process for bioprosthesis
AssigneeClemson University
InventorsDan T. Simionescu, Narendra Vyavahare
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Abstract
A biomaterial useful for bioprostheses such as bioprosthetic heart valves is provided in which the fixed tissue has improved elastic properties. The high elastin-containing biomaterial is further characterized by having anisotropic properties wherein the biological material has a greater stiffness in one direction and a greater elasticity in a cross direction. For instance, the biological material has an elastin content of about 30% by weight. In one embodiment, the biological material is vena cava tissue.
Claims5
A bioprosthetic heart valve comprising:
- a fixed tissue having an elastin content of at least about 10% by weight of the tissue, wherein the tissue is vena cava tissue;
- and
- a support structure selected from the group consisting of a suture ring and a stent to support the tissue of said bioprosthetic heart valve.
Dependencies are inferred from the claim text.