1310 皮膚とマットレスの弾性を考慮した骨突起部の微小血管の変形に関する数値解析(OS13-3 生体材料力学の最前線-生体組織の損傷評価-)

概要

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We made fmite element models with bone prominence, fat, skin and two cavities of capilaiy. These capillaries are located at a center of the fat and skin. One model has a skin surface with a small curvature and the other with a round surface. The tissue is compressed to a mattress. We compared two supporting conditions; the tissues are supported by (1) an elastic mattress and (2) a mattress for a half and a pressure for the other half. We compared the vascular flow resistance in the skin and fat in the two models for the two supporting conditions, assuming a Poiseuille flow. The simulation results show that the skin with a round surface causes a large compressive stress under the bone prominence. They also show that supporting by 5 kPa pressure reduces the stress concentration to the pressure level and the flow resistance in the capillaries by 9%-23%.
2010-10-09