Bone allograft material and method
First Claim
1. A method for preparing a bone allograft comprising the steps of treating a section of cadaver bone to remove all soft tissue therefrom;
- then texturing said section b forming a multiplicity of holes extending inwardly from a surface thereof;
said holes being of a diameter within the range of 200 to 2000 um and being spaced apart distances within the range of 100 to 1200 um; and
then demineralizing said section by immersing the same in a demineralizing bath containing a protease inhibitor for retaining the bioactivity of the extracellular matrix proteins bound thereto and providing a rigid collagen scaffold for reconstructive allogenic implantation in a living subject.
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Accused Products
Abstract
A textured, demineralized, and unitary mammalian bone section for providing a rigid, foraminous, collagen scaffold for allogenic skeletal reconstruction. The allograft is prepared by treating a section of cadaver bone to remove all soft tissue, then texturing the bone surface to produce a pattern of holes of selected size, density, and depth, and finally demineralizing the bone section to leave a rigid, insoluble collagen scaffold suitable for osteoinduction upon implantation. All such steps are performed with minimal denaturing of the extracellular matrix proteins which remain bound to the collagen scaffold and which are necessary to complete the process of new bone formation.
296 Citations
12 Claims
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1. A method for preparing a bone allograft comprising the steps of treating a section of cadaver bone to remove all soft tissue therefrom;
- then texturing said section b forming a multiplicity of holes extending inwardly from a surface thereof;
said holes being of a diameter within the range of 200 to 2000 um and being spaced apart distances within the range of 100 to 1200 um; and
then demineralizing said section by immersing the same in a demineralizing bath containing a protease inhibitor for retaining the bioactivity of the extracellular matrix proteins bound thereto and providing a rigid collagen scaffold for reconstructive allogenic implantation in a living subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- then texturing said section b forming a multiplicity of holes extending inwardly from a surface thereof;
Specification