Patent ID: 8172907

Claim:
A method for the production of a biologically active prosthetic device for the reconstruction of bone tissue, comprising the following steps: scanning a patient with CAT (Computerised Axial Tomography) in order to obtain a three-dimensional electronic model of a part of the bone and of a bone defect to be reconstructed; on the basis of the three-dimensional electronic model, producing prototype resin model of an area of the patient's bone involved by means of a three-dimensional stereolithographic technique; by using the prototype resin model, forming a model of the patient's bone defect to be reconstructed; forming a negative mould by using slip casting forming technology on the basis of the model of the patient's bone defect to be reconstructed, said negative mould being a negative of the patient's bone defect to be reconstructed; by using the negative mould, producing a sintered ceramic semi-finished product, the dimensions and shape of the semi-finished product being slightly larger than those of the bone defect, the sintered ceramic semi-finished product having a controlled and interconnected porosity of from 30 to 90%, said porosity having a bimodal distribution of the pore dimensions in a first range of from 0.1 to 125 microns and in a second range of from 125 to 2500 microns; mechanically processing and manually finishing the sintered semi-finished product to obtain a finished ceramic product having precise dimensions and shape of the bone defect; checking the finished product in terms of dimensions and shape directly on the prototype resin model and by using the negative mold.