The invention discloses a macrostructure and
microstructure controllable hydroxyapatite porous
ceramic, a preparation method thereof and an application of the
ceramic. The hydroxyapatite porous
ceramic is subjected to 3D (three-dimensional) direct-writing to obtain a three-dimensional structure, and freeze pouring regulation is performed to obtain a
microstructure porous structure. A raw materialA is added into a
solvent containing dispersing agents and mixed with the
solvent to obtain suspension liquid, and then gel is added into the suspension liquid and mixed with the suspension liquid toobtain
slurry. The
raw material A comprises hydroxyapatite
powder, the
slurry passes 3D direct-writing equipment and is controlled to be in a
gel state when passing the direct-writing equipment, the
slurry is printed and frozen to obtain a
green body with a three-dimensional structure, and the
green body is freeze-dried and sintered to obtain the macrostructure and
microstructure controllable hydroxyapatite porous ceramic. Direct-writing and freeze pouring technologies are initiatively and efficiently combined, the obtained hydroxyapatite porous ceramic is used as a
bone scaffold, and the customization requirements of different bone tissues can be met.