Abstract
Generally, as the material of catheter, soft characteristic is required so as not to damage vascular wall etc. On the other hand, in the surgical operations that the remote manipulation is required such as myocardial or cerebral infarction, a responsibility and enough stiffness are also needed. When we image actual use of catheter, it is expected that the deformation is multiaxial loading state of tension, torsion, and bending. However, it is difficult to elucidate these mechanical property directly. So, we must investigate it from not complicated deformation but simply uniaxial loading. In our previous study, we have been tried to investigate the physical property of tension. In this paper, tosional tests have been carried out to investigate viscoelastic response. Moreover, we discuss the relation of the shearing modulus and braid angle.
