Patent ID: 11857698
Assignee: UCL BUSINESS LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 29:
30. A process of making the bioactive bone graft substitute of claim 1 comprising:
(i) a gel formation stage;
(ii) a liquid phase replacement stage;
(iii) a gel drying stage; and
(iv) a calcination stage;
wherein the gel formation stage comprises the steps of dissolving a metal cation in a first solvent, adding a silicate to the solvent and gelling of the resultant mixture; and
wherein the liquid phase replacement stage comprises the step of soaking the gel in a second solvent; and
wherein the gel drying stage is carried out by freeze-drying or supercritical drying; and
wherein the calcination stage comprises the step of heating the dried gel.