Relationship between the kink and the structure of the guidewire

Abstract

The guidewire is a medical device which is used to wide range of vascular procedures. It is led to the target place to navigation the percutan coronary intervention devices. The fracture or breaking of the guidewire is about 0.1-0.8% during this procedures. The guidewires’ flexibility and kink resistance is different between the different guidewires and within the guidewire as well. It is influenced by the core material, the core diameter, and the tip style. In this study the core diameter, and the tip style was defined under stereo-, metallic microscope, and scanning electron microscope. The core material was same in the guidewire. The core diameter was significant lower in the distal end member (31.7 μm 1:77 μm), than on the shaft portion (176-343 μm) (p < 0:001). The tip style was a Core-to-Tip. The helical coil made of a wire with about 76.35 μm diameters, and with about 25.6 μm gaps between the turns.