ENGINEERED OSTEOCHONDRAL CONSTRUCT FOR TREATMENT OF ARTICULAR CARTILAGE DEFECTS
First Claim
1. An implant for articular cartilage repair, comprising a three-dimensional body formed of cancellous bone and having a demineralized section, the demineralized section containing bone morphogenetic proteins (BMP'"'"'s) that are released by the demineralization but retained in said body, and a cartilage layer formed on a surface of the demineralized section, said cartilage layer being formed by a method including the steps of:
- (a) isolating chondrocytes from articular cartilage of a donor;
(b) cultivating the isolated chondrocytes in a medium;
(c) adding the cultivated chondrocytes to the demineralized section of said body, whereby the cultivated chondrocytes are stimulated by the BMP'"'"'s retained in said body; and
(d) incubating the cultivated chondrocytes to form a plurality of layers of chondrocytes on the demineralized section, wherein the plurality of layers of chondrocytes forms said cartilage layer.
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Accused Products
Abstract
An implant for articular cartilage repair includes (1) a three-dimensional body formed of cancellous bone having a demineralized section that contains bone morphogenetic proteins (BMP'"'"'s) that are released by the demineralization but retained in the body, and (2) a cartilage layer formed on a surface of the demineralized section. The cartilage layer is formed by a method including the steps of (a) isolating chondrocytes from articular cartilage of a donor; (b) cultivating the isolated chondrocytes in a medium; (c) adding the cultivated chondrocytes to the demineralized section of the body, whereby the cultivated chondrocytes are stimulated by the BMP'"'"'s retained in the body; and (d) incubating the cultivated chondrocytes to form a plurality of layers of chondrocytes on the demineralized section, wherein the plurality of layers of chondrocytes forms the cartilage layer.
112 Citations
37 Claims
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1. An implant for articular cartilage repair, comprising a three-dimensional body formed of cancellous bone and having a demineralized section, the demineralized section containing bone morphogenetic proteins (BMP'"'"'s) that are released by the demineralization but retained in said body, and a cartilage layer formed on a surface of the demineralized section, said cartilage layer being formed by a method including the steps of:
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(a) isolating chondrocytes from articular cartilage of a donor; (b) cultivating the isolated chondrocytes in a medium; (c) adding the cultivated chondrocytes to the demineralized section of said body, whereby the cultivated chondrocytes are stimulated by the BMP'"'"'s retained in said body; and (d) incubating the cultivated chondrocytes to form a plurality of layers of chondrocytes on the demineralized section, wherein the plurality of layers of chondrocytes forms said cartilage layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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- 20. A construct for repairing an articular cartilage defect, said construct comprising a body entirely formed from substantially demineralized bone.
Specification