3225 圧電アクチュエータを用いた血栓溶解用マイクロ撹拌カテーテルの設計(J06-6 スマートシステム・デバイス,J06 知的材料・構造システム)

概要

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The cerebral thrombus or blood clot might cause cerebral stroke and even decease if the clot could not be dissolved within several hours after it was formed. We presented a treatment method of utilizing micro stirrer attached on the catheter tip. This paper presents the fundamental study on design of a micro stirrer for high effective dissolution. Based on the experimental results, the micro stirrer is analyzed by FEM with the fluid-structure interaction (FSI) analysis. The stirring effect is evaluated by the movement of the stirrer and the flow around the stirrer, and the performance index associated with the dissolution performance is presented. Using the performance index, several types of stirrers are evaluated. The obtained results demonstrated that the dissolution performance of the stirrer is influenced by the shape and the volume of the PZT actuator.
一般社団法人日本機械学会の論文
2006-09-15