Abstract
Much research has focused on producing actively controllable tip catheter for more minimally invasive intravascular treatment. In this work, we designed 4-electrode type active micro catheter using polypyrrole (PPy). We used SEPLEGYDA [○!R]for a seed layer in electrochemical deposition of PPy. SEPLEGYDA[○!R] is low hardness and easy to form a conducting layer compared to metal electrode layer. As a result of a finite element analysis, 4-electrode type active micro catheter achieved the minimum radius of curvature of 16.4mm which is sufficient for intravascular treatment. To realize 4-electrode type active micro catheter, we fabricated unimorph (1-electrode) type active micro catheter to establish a basic fabrication technologies. When a step voltage of 1.0V was applied to the PPy in a NaCl solution, the catheter bent with a radius of curvature of 580mm.
