Patent ID: 11890392
Assignee: GUANGZHOU BEOGENE BIOTECHNOLOGY CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A  C | IPC A  C

Claim 2:
3. The method of claim 1, wherein the β-Tricalcium Phosphate (β-TCP) in step (2) is prepared by the steps of:
dissolving a certain amount of Ca(NO3)2 in a beaker containing deionized water to form a Ca(NO3)2 solution containing Ca;
dissolving a certain amount of (NH4)2HPO4 in another beaker containing deionized water to form a (NH4)2HPO4 solution containing P;
adding a certain amount of SDS to the Ca(NO3)2 solution, and adding the (NH4)2HPO4 solution dropwise to the Ca(NO3)2 solution under mechanical stirring; in the process of adding dropwise the (NH4)2HPO4 solution, adding ammonia water to keep pH of a whole system at 10 or greater during reaction; and
after dropwise addition of the (NH4)2HPO4 solution, continuing reacting under mechanical stirring, and letting a resultant solution stand to precipitate; then using a buchner funnel to perform suction filtration on precipitate, and alternately washing the precipitate with deionized water and absolute ethanol until filtrate is neutral, vacuum drying the precipitate washed to be neutral to obtain loose, non-caking TCP powder, and then sintering the loose, non-caking TCP powder to obtain β-tricalcium phosphate (β-TCP) powder.