Porous niobium for medical use, the material body of porous niobium consists of a cavity and a cavity wall around the cavity, the cavity is through, the porosity of porous niobium is not more than 95%, when the strain reaches 50% is still in the stage of platform stress, unit volume absorbed energy when the strain reaches 50% is not less than 2.8×10 4J/mm3. This medical porous niobium has good energy absorption ability, can meet the needs of human bone tissue growth, and is used for cancellous bone repair implant, bone regeneration effect is good after implantation.
Niobium has high inertia and corrosion resistance, and has excellent biocompatibility and bioactivity, so it is suitable for biological implant materials. However, the dense metal niobium cannot be directly used in human body due to its heavy weight and inconsistent elastic modulus with human bone. Therefore, the design and manufacture of porous niobium metal materials with excellent biocompatibility and bioactivity, good mechanical properties and consistent with the microstructure of human bone will become a research focus of researchers.
Porous niobium, the material body of porous niobium consists of a cavity and a cavity wall surrounding the cavity, the cavity is through, and its characteristics lie in that the porosity of the porous niobium is not more than 95%, it is still in the stage of platform stress when the strain reaches 50%, and the absorbed energy per unit volume is not less than 2.8 ×10-4J/ mm3 when the strain reaches 50%. Such porous niobium as a bone implant is particularly beneficial for bone tissue to start growing. After implantation, due to its appropriate energy absorption capacity and proper buffering effect, it can provide a good growth environment for the initial growth of bone tissue, which is conducive to the regeneration of bone tissue.
As human bone tissue is often in motion, it is often subjected to force after being implanted into human body as bone implant material. The porous niobium implant material provided by the invention has suitable energy absorption capacity, good buffering effect, strong impact resistance, can avoid external force caused by implant and bone tissue damage and structural collapse, and maintain normal physiological function; And it can transmit these forces to human bone tissue, stimulating the growth of bone cells, so that the bone tissue can grow into the body, and in good condition, to achieve bone regeneration.
