Bolus Transport Simulation by Peristaltic Movement of Esophagus

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  • 食道の蠕動運動による食塊の輸送シミュレーション

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In this study, the authors analyze the behavior of the bolus by peristalsis by simulation. The esophagus and bolus are represented by spring-mass model. Circular muscle contraction of the esophagus by peristalsis is represented by changing the natural length and the coefficient of the spring. The interaction of the bolus and esophagus is treated as contact between spheres and virtual spring and dumper are introduced to represent consistent contact. The profile of estimated elapsed time of swallowing showed qualitative matching with in vivo experiment result.

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