Demineralized bone matrix compositions and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-009/10
A61K-035/32
출원번호
US-0526987
(2012-06-19)
등록번호
US-8435566
(2013-05-07)
발명자
/ 주소
Behnam, Keyvan
Wei, Guobao
Beisser, James A.
출원인 / 주소
Warsaw Orthopedic, Inc.
대리인 / 주소
Sorell, Lenna and Schmidt LLP
인용정보
피인용 횟수 :
18인용 특허 :
123
초록▼
Bone matrix compositions and, more specifically, demineralized bone matrix (DBM) having increased osteoinductive capacity and methods for its production are provided. Specifically, DBM derived from cortical bone from the periosteal layer of bone are provided. Compositions comprising a disproportiona
Bone matrix compositions and, more specifically, demineralized bone matrix (DBM) having increased osteoinductive capacity and methods for its production are provided. Specifically, DBM derived from cortical bone from the periosteal layer of bone are provided. Compositions comprising a disproportionate amount of DBM prepared from bone derived from the periosteal and/or middle layer of bone are provided. Preparations of and methods of use of periosteal DBM compositions are disclosed.
대표청구항▼
1. A demineralized bone matrix composition comprising cortical bone milled from a periosteal layer; andcortical bone milled from a middle layer and an endosteal layer,wherein the cortical bone milled from the periosteal layer, the middle layer and the endosteal layer is separated and demineralized s
1. A demineralized bone matrix composition comprising cortical bone milled from a periosteal layer; andcortical bone milled from a middle layer and an endosteal layer,wherein the cortical bone milled from the periosteal layer, the middle layer and the endosteal layer is separated and demineralized such that, upon recombination of the milled cortical bone from the periosteal layer, the middle layer and the endosteal layer, the composition includes a disproportionately greater percentage of cortical bone derived from the periosteal layer as compared to cortical bone derived from the middle layer and the endosteal layer. 2. The demineralized bone matrix composition of claim 1, comprising cortical bone derived from a long bone. 3. The demineralized bone matrix composition of claim 1, wherein the demineralized bone matrix composition has an osteoinductive capacity that is greater than the osteoinductive capacity of a demineralized bone matrix having a lesser percentage of cortical bone derived from the periosteal layer. 4. The demineralized bone matrix composition of claim 1, wherein the demineralized bone matrix composition has an osteoinductive capacity that is greater than the osteoinductive capacity of a demineralized bone matrix having a lesser percentage of cortical bone derived from the endosteal layer. 5. The demineralized bone matrix composition of claim 1, wherein the demineralized bone matrix composition has an average growth factor content exceeding that of a demineralized bone matrix derived from endosteal layer. 6. The demineralized bone matrix composition of claim 1, further including an excipient. 7. The demineralized bone matrix composition of claim 1, further including a carrier. 8. The demineralized bone matrix composition of claim 7, wherein the carrier is selected from the group consisting of: a polyol, a polysaccharide, a hydrogel, a polymer and combinations thereof. 9. The demineralized bone matrix composition of claim 1, further including a growth factor. 10. An allograft composition comprising demineralized bone matrix wherein the demineralized bone matrix is comprised of cortical bone milled from a periosteal layer; andcortical bone milled from a middle layer and an endosteal layer,wherein the cortical bone milled from the periosteal layer, the middle layer and the endosteal layer is separated and demineralized such that, upon recombination of the milled cortical bone from the periosteal layer, the middle layer and the endosteal layer, the composition includes a disproportionately greater percentage of cortical bone derived from the periosteal layer as compared to cortical bone derived from the middle layer and the endosteal layer. 11. The allograft composition of claim 10, wherein the demineralized bone matrix is substantially free of bone derived from an endosteal layer. 12. A demineralized bone matrix composition comprising cortical bone milled from a periosteal layer; andcortical bone milled from a middle layer and an endosteal layer, wherein the cortical bone milled from the periosteal layer, the middle layer and the endosteal layer is separated and demineralized such that, upon recombination of the milled cortical bone from the periosteal layer, the middle layer and the endosteal layer, the composition includes a disproportionately greater percentage of demineralized bone derived from the periosteal layer as compared to cortical bone derived from the middle layer and the endosteal layer wherein the demineralized bone matrix composition has no exogenous growth factor or demineralized bone matrix (DBM) extract, and wherein the demineralized bone matrix composition has an osteoinductive factor content greater than demineralized bone matrix comprising bone derived from the non-periosteal layer as compared to demineralized bone matrix comprising bone derived from the periosteal layer. 13. The demineralized bone matrix of claim 12, further comprising adding the demineralized cortical bone matrix to a carrier. 14. The demineralized bone matrix of claim 12, further comprising adding the demineralized cortical bone matrix to an excipient. 15. The demineralized bone matrix of claim 12, further comprising adding a growth factor to the demineralized bone. 16. The demineralized bone matrix of claim 12, further comprising adding an extract to the demineralized bone. 17. The demineralized bone matrix of claim 12, further comprising providing a containment device and providing the demineralized cortical bone in the containment device. 18. A composition comprising demineralized cortical bone wherein the composition comprises cortical bone milled from a periosteal layer; andcortical bone milled from a middle layer and an endosteal layer,wherein the cortical bone milled from the periosteal layer, the middle layer and the endosteal layer is separated and demineralized such that, upon recombination of the milled cortical bone from the periosteal layer, the middle layer and the endosteal layer, the composition includes a higher osteoinductive activity than cortical demineralized bone prepared from aggregate long bones of the same donor, wherein the increase in osteoinductive activity is not attributed to addition of growth factors or treatment with enzymes, but is a consequence of selective demineralization of a specific region of a long bone or a specific type of long bone.
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