生体材料ゴムチタン製メッシュプレートインプラントの曲げ特性評価

抄録

People who have lost a part of their bones due to accidents, injuries or illnesses are subjected to bone graft surgery. This study focuses on metallic implants used for artificial bone grafts. There are three bone graft methods for bone defects caused by diseases such as cancer and accident injuries: Autogenous bone grafts, Allografts and Artificial bone grafts. This study focuses on metallic implants used for artificial bone grafts. Conventionally used implants of titanium alloys have the problems that the burdens on the patient are increased due to their excessive rigidity and overweight than human bones. Meshed GUM Metal plates with lower elasticity, high strength and high biocompatibility are introduced to solve the over stiffness & weight problems of ready-used metal implants. Basic mesh shapes are designed and applied to GUM Metal plates using 3D CAD modeling tools. Bending properties of prototype meshed GUM Metal plates are evaluated experimentally and analytically. Meshed plate specimens with 180°, 120° and 60° axis-symmetrical types were fabricated for 3-point bending tests. The pseudo bending elastic moduli of meshed plate specimens obtained from 3-point bending test are ranged from 4.22 GPa to 16.07 GPa, within the elasticity range of natural cortical bones from 2.0 GPa to 30.0 GPa. Analytical approach method is validated by comparison with experimental and analytical results for evaluation on bending property of meshed plates.