Patent ID: 7939092

Claim:
An implantable osteogenic medical material, comprising: a malleable, cohesive, shape-retaining putty comprising 60% to 75% by weight of an aqueous liquid medium and including a bone morphogenic protein incorporated at a level of about 0.6 mg/cc to about 2 mg/cc of the putty; said putty including mineral particles dispersed therein having an average particle diameter in the range of 0.4 mm to 5 mm at a level of 0.25 g/cc to 0.35 g/cc in the putty, the mineral particles comprising a synthetic ceramic; said putty further including insoluble collagen fibers at a level of 0.04 g/cc to 0.1 g/cc of the putty, and soluble collagen at a level of 0.01 g/cc to 0.08 g/cc of the putty; and with the further proviso that the weight ratio of insoluble collagen fibers to soluble collagen in the putty is in the range of 4:1 to 1:1, wherein the mineral particles form a scaffold for bone ingrowth and comprise biphasic calcium phosphate that has a tricalcium phosphate: hydroxyapatite weight ratio of 50:50 to 95:5.