Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Reexamination Certificate
2006-05-05
2010-11-16
Kemmerer, Elizabeth C. (Department: 1646)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
C623S017110, C424S198100, C514S002600
Reexamination Certificate
active
07833270
ABSTRACT:
The present invention relates to the design and composition of a depot implant for optimal delivery of growth factors to treat osteoporotic bone, in that such depot implant is constructed to be in a cylinder (rod) or sphere shape and have a natural or synthetic polymer scaffold with or without impregnated calcium phosphate particles. The density of the depot is higher than a typical BMP sponge carrier to facilitate it's implantation and slower release of the growth factor. The scaffold is such that it has adequate porosity and pore size to facilitate growth factor seeding and diffusion throughout the whole of the bone structure resulting in increased bone mineral density in the osteoporotic bone. In addition, the shape of the depot implant allows for delivery through a cannula or large bore needle.
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Kemmerer Elizabeth C.
Warsaw Orthopedic, Inc
Xie Xiaozhen
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