Coating processes – Heat decomposition of applied coating or base material
Reexamination Certificate
2006-03-06
2009-08-18
Yoon, Tae H (Department: 1796)
Coating processes
Heat decomposition of applied coating or base material
C427S219000, C523S115000, C523S205000, C523S322000
Reexamination Certificate
active
07575780
ABSTRACT:
A bone-growth stimulating composition for forming a resorbable implant, methods for making such a composition and a corresponding putty/paste material. In some embodiments of the invention, such a material includes a plurality of particles having a predetermined size and comprising a first calcium sulfate compound and a resorbable polymer in a predetermined weight ratio. Methods for making such a material include rotating calcium sulfate powder in a drum at a first predetermined drum speed, spraying of a resorbable polymer solution at a predetermined rate on the calcium sulfate powder over a predetermined period of time and drying the resulting particles. Such compositions allow resorption rates of the implant composition in vivo to be controlled, and my vary between eight and twenty-four weeks (for example), which can be matched to substantially correspond to a rate of bone growth in a particular application. The implant composition of the present invention can be used for the repair, augmentation, and other treatment of bone.
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Alexander Harold
Mamidwar Sachin
Ricci John L.
Li Yi
Orthogen LLC
Silverman Melvin K.
Yoon Tae H
LandOfFree
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