Prosthetic implants including ECM composite material
First Claim
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1. A prosthetic valve device for implantation in a bodily passage, comprising:
- an artificial valve comprising a frame and at least two leaflets attached thereto, wherein said leaflets include a first leaflet and a second leaflet formed with an extracellular matrix composite material including a first extracellular matrix material having a surface, and a second, biosynthetically-deposited extracellular matrix material including extracellular matrix proteins on said surface, said biosynthetically-deposited extracellular matrix material having been deposited on said first extracellular matrix material by cells cultured on said first extracellular matrix material followed by removal of said cells to provide said extracellular matrix composite material;
wherein said extracellular matrix proteins enhance the function of said first extracellular matrix material in each said leaflet by modifying the thrombogenicity and remodeling of the first extracellular matrix material;
wherein said artificial valve has a length of coaptation in the range of about 5 to 30 mm;
wherein said first leaflet and said second leaflet each include a first outer edge;
wherein the first outer leaflet edges of the first and second leaflets are within about 3 mm of one another as they extend in a longitudinal direction along said frame for a distance of about 5 to about 30 mm; and
wherein the valve device is configured such that at least a portion of said outer leaflet edges extending in a longitudinal direction contact the bodily passage when the valve device is implanted in the bodily passage.
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Abstract
Described are preferred prosthetic valve devices including a first extracellular matrix material having a second extracellular matrix material deposited thereon. The preferred materials are made by culturing cells in contact with an extracellular matrix graft material in a fashion to cause the cells to biosynthesize and deposit extracellular matrix components on the material. The cells are then removed to provide the extracellular matrix composite material. In preferred embodiments, the prosthetic valve devices are configured for use in vascular applications.
71 Citations
32 Claims
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1. A prosthetic valve device for implantation in a bodily passage, comprising:
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an artificial valve comprising a frame and at least two leaflets attached thereto, wherein said leaflets include a first leaflet and a second leaflet formed with an extracellular matrix composite material including a first extracellular matrix material having a surface, and a second, biosynthetically-deposited extracellular matrix material including extracellular matrix proteins on said surface, said biosynthetically-deposited extracellular matrix material having been deposited on said first extracellular matrix material by cells cultured on said first extracellular matrix material followed by removal of said cells to provide said extracellular matrix composite material; wherein said extracellular matrix proteins enhance the function of said first extracellular matrix material in each said leaflet by modifying the thrombogenicity and remodeling of the first extracellular matrix material; wherein said artificial valve has a length of coaptation in the range of about 5 to 30 mm; wherein said first leaflet and said second leaflet each include a first outer edge; wherein the first outer leaflet edges of the first and second leaflets are within about 3 mm of one another as they extend in a longitudinal direction along said frame for a distance of about 5 to about 30 mm; and wherein the valve device is configured such that at least a portion of said outer leaflet edges extending in a longitudinal direction contact the bodily passage when the valve device is implanted in the bodily passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A prosthetic valve device for implantation in a bodily passage, comprising:
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an artificial valve comprising a frame and at least two leaflets attached thereto, wherein said leaflets include a first leaflet and a second leaflet formed with a decellularized extracellular matrix composite sheet material including a first extracellular matrix material having a surface, and a second, biosynthetically-deposited extracellular matrix material on said surface, wherein said biosynthetically-deposited extracellular matrix material has been deposited on said surface by culturing cells on the first extracellular matrix to deposit extracellular matrix proteins including fiber-forming proteins interwoven in a hydrated gel composed of a network of glycosaminoglycan chains, followed by removal of the cells to provide said decellularized extracellular matrix composite sheet material; wherein said extracellular matrix proteins enhance the function of said first extracellular matrix material in each said leaflet by modifying the thrombogenicity and remodeling of the first extracellular matrix material; wherein said artificial valve has a length of coaptation in the range of about 5 to 30 mm; wherein said first leaflet and said second leaflet each include a first outer edge fixedly attached to the frame and a second outer edge fixedly attached to the frame, a first face spanning between the first outer edge and the second outer edge, and a second face opposite the first face and spanning between the first outer edge and the second outer edge; wherein the first outer leaflet edges of the first and second leaflets are within about 3 mm of one another as they extend in a longitudinal direction along said frame for a distance of about 5 to about 30 mm; and wherein the valve device is configured such that at least a portion of said first outer leaflet edges extending in a longitudinal direction contact the bodily passage when the valve device is implanted in the bodily passage. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification