Patent ID: 9682172
Date: 2017-06-20
CPC Classifications: A61K,A61L,A61P

Claim:
1. A delivery system comprising: a covering configured for implantation into a bone defect site and comprising one or more polymers, the covering being porous and comprising at least one compartment; a demineralized bone matrix material comprising fully demineralized bone matrix fibers and surface demineralized bone chips in a ratio of about 25:75 to about 75:25 disposed within the at least one compartment, wherein the covering retains the demineralized bone matrix material for placement at the bone defect site and facilitates transfer of cells into and out of the covering and the covering comprises a therapeutic agent disposed within the at least one compartment or on a surface of the covering, and the covering comprises edges comprising a polymer that is different and more hydrophilic than the at least one or more polymers of the rest of the covering.