動脈の力学指標の提案(機械力学,計測,自動制御)

概要

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Arteriosclerosis is such a phenomena hardening of arteries, with thickening and loss of elasticity. Previous indexes are included both geometric factor and mechanical factor as the radius, the wall thickness and mechanical properties of blood vessel. Furthermore, those indexes are formulated based on the static relationship between a pressure and a radial change. In this study, we suggested an evaluation index formulated by thin cylindrical shell theory estimated dynamic strain, and this index was independent of wall thickness and radius of arterial vessel. To confirm the validity of the evaluation index, we evaluated the parameters of viscosity and elasticity using the latex tube with different wall thickness of blood vessel model. We measured a radius of the latex tube and an inner pressure maintained a pulsatile pump in a mock circuit filled with the water. Estimating the parameters of viscosity and elasticity using these measurement values, we concluded that a proposal index was independent of the wall thickness and the radius of the arterial vessel.
社団法人日本機械学会の論文
2008-07-25