摘要
目的将具有良好生物相容性的钛制成类似松质骨结构,具有较高的强度和良好的生物性能的多孔材料。方法聚氨酯泡沫海棉做成孔径200～600μ,孔隙率50%～70%的三维连通多孔结构,作为钛粉载体。烧结,制成具有三维连通结构的多孔钛,测定生物力学性能。结果制成的多孔钛,具有三维、连通结构,与人股骨头松质骨结构相似。孔径300～600μ,孔隙率50%～60%。三维连通多孔钛的平均弹性模量为0．6～0．7GPa。结论①本实验三维连通多孔钛,达到了理想的孔径和孔隙率,弹性模量适中,可以广泛应用在骨科各个领域。②三维连通多孔钛还存在着连通孔的闭塞率较高,整体强度不均匀问题。
Objective Ti powder which has good biocompatibility is made as same as cancellous bone, the porous material which has higher strength and adequate elastic modulus. Method 3-D （three diamensions） PUR （polyurethane） is made, its＇ pore size 200 - 6000, interval porosity 50%- 70%, then Ti powder is combination with PUR. Ti powder is sintered 3-D porous Ti which has the same pore size and porosity as the 3-D PUR, then biomechanics performance of the 3-D porous Ti is measured by MTS 858 mini Bionix II machine. Result The structure of 3-D porous Ti made by solid phase sinter method is as similar as cancellous bone of hu- man＇s femoral head, its＇ pore size 300 - 600g, interval porosity 50%- 60%, elastic modulus 0.6 - 0.7GPa between cancellous bone and cortex bone. Conclusion New 3-D porous Ti which has ideal pore size, porosity and elastic modulus can be adapted generally in orthopaedics, but the character of the 3-D porous Ti should be improved including pore occlusio and intensity strength inequable.
出处
《生物骨科材料与临床研究》
CAS
2007年第1期1-4,共4页
Orthopaedic Biomechanics Materials and Clinical Study
基金
国家"863"重点课题课题编号2003AA205140
关键词
三维连通
多孔
钛
特征
3-D
Connectitvity
Porous
Ti （titanium）
Character
