病変部と正常組織の弾性変化が再現可能な磁性ソフトマテリアルの検討

抄録

In this study, to realize a palpation simulator, we fabricate magnetic soft materials that can reproduce the wide range of elasticity between lesions and normal biological tissues. The magnetic soft materials consist of silicone gel as the polymer and carbonyl iron particles as the magnetic particles. In this paper, the elasticity of the materials of three blending ratios of 16, 23, and 33 vol.% are measured by compression test in which the applied magnetic field is varied. Then, Young’s modulus of each condition is compared with those of lesions in the breast and prostate tissue and their normal tissues. The experimental results show that the fabricated materials have enough range of elasticity for reproducing the elasticity of lesions and normal tissues. However, in the compression test, due to the effect of the magnetic field, it is observed that the materials keep their deformation even after releasing the compression. The above results provide insight into how to develop the palpation simulator using the characteristics of the materials.