Patent ID: 8778822

Claim:
A porous ceramic composition consisting essentially of: a calcium aluminate (CA) containing phase having the formula C n A y , wherein n is an integer from about 1 to about 12 and y is an integer from about 1 to about 24, said CA containing phase having at least a CaAl 2 O 4 phase and a CaAl 4 O 7 phase, including phosphate containing phases resulting from the interaction of C n A y , C n A y -hydrates wherein n is an integer from about 1 to about 12 and y is an integer from about 1 to about 24, CaO, Al n O y , and Al n O y -hydrates wherein n is an integer from about 1 to about 12 and y is an integer from about 1 to about 24 with P n O y x , wherein in the formula P n O y n is an integer 1, 2, or 3 and y is an integer 3, 4, or 7 and x is a negatively charged integer of 1, 3, or 4; and a biologically active material that comprises one or more proteins for promoting bone growth.