Open Access

ABSTRACT

Deformational Behavior and Strength of Catheter Reinforced with Braids (Visco-elastic Response under Multi-axial Loading for Tension and Torsion)

by Y. Kato, Y. Yamamura

The International Conference on Computational & Experimental Engineering and Sciences 2007, 4(2), 87-92. https://doi.org/10.3970/icces.2007.004.087

Abstract

The purpose of this study is to investigate the deformational behavior and strength of the catheter which is made from the soft nylon resin and is reinforced with thin stainless wires called braid. When we image the usage conditions of catheter in the actual surgical operation, it is expected that the multi-axial loading for tension, torsion and the bending are applied and deformations occurring in the catheter become very complicated. As the first step of this study to reveal these phenomena, the combined loadings for tension and torsion are chosen as the subject of this study and we carry out these experiments and investigate the visco-elastic response influenced by the existence of braids. Especially, although the direction of the principal axis of stress rotates in the space with changing the ratio of tension and torsion variously, we examine how the relation between the direction of the principal axis of stress and the direction of braid in the catheter influence the visco-elastic behavior.

---