Patent ID: 6719989
Filing Date: 2004-04-13
Classification: A61K,A61L

Abstract:
A sustained release carrier, comprising:a ceramic composite which is formed by bonding at least a first porous ceramic body having its own overall porosity in the range of 15 to 60%, and a second porous ceramic body having its own overall porosity in the range of 15 to 60%; the first and second porous ceramic bodies comprising a calcium phosphate-based ceramic compound; the first and second porous ceramic bodies each having a bonding surface; the first and second porous ceramic bodies being bonded together with a bonding ceramic applied as a slurry to the bonding surfaces of the first and second ceramic bodies; wherein the slurry comprises primary particles of the same ceramic compound of which the first and second said bodies are comprised; and active substance(s) impregnated into the first and second porous ceramic bodies; wherein the overall porosity of the first porous ceramic body is different from the porosity of the second porous ceramic body thereby providing different release rates of the active substance(s).