Patent ID: 8178013

Claim:
A method of fabricating a bone graft material, comprising the steps of: selecting biocompatible polymer and salt particles from about 100-200 μm in diameter, selecting hydroxyapatite particles less than 1 μm in diameter, mixing the biocompatible polymer and hydroxy apatite and NaCl particles, wherein the ratio of biocompatible polymer to hydroxyapatite is from about 1:2 to about 2:1; loading the mixture of particles into a mold, compressing the mixture with a very high pressure from 1000 to 4000 psi; exposing the newly formed composite scaffold to high pressure gas from 400 to 1600 psi and decreasing the gas pressure on the composite scaffold until the pressure returns to ambient pressure, wherein the bone graft material has pores created by the formation of gas bubbles, soaking the composite scaffold in an aqueous solution to dissolve and leach out the NaCl particles, rinsing and drying the new composite biomaterial; and coating the new composite material with apatatite.