HYDROXYAPATITE AND CALCIUM CARBONATE COMPOSITE FOR BONE DEFECT FILLING IN PLASTIC SURGERIES Russian patent published in 2011 - IPC A61L27/02 A61L27/12 B82B1/00 

FIELD: medicine.

SUBSTANCE: invention represents a hydroxyapatite and calcium carbonate composite containing 20 to 80 wt % of calcium carbonate and compactly heat-setting (apparent porosity less than 2-4 %) at temperatures to 720°C. Using a potassium carbonate and sodium carbonate additive in an amount ranging within 10 % to 100 % related to the major ingredients (hydroxyapatite and hydroxyapatite carbonate and calcium carbonate) prevents thermal baking decomposition of a ceramic material and enables producing a fine-crystalline structure of chip size less than 500 nm and high compression strength 100 to 330 MPa.

EFFECT: composite material differs by high biological resorbing ability ensured by observed resorbed phases of hydroxyapatite carbonate and calcium carbonate.

1 tbl, 4 ex