COMPARISON OF THE MECHANICAL PROPERTIES OF THE STEEL GUIDES CARDIOLOG

Abstract eng:
This article demonstrates results of the tests of mechanical properties of steel guidewires used in cardiac surgical procedures. The established research methodology embracing specimen geometry and simulated operating environment allowed determining the maximum strength of a guidewire during surgeries. The results of the tests were subjected to statistical analysis, on the basis of which the differences in mechanical strength of material were determined. Results indicate differences in the strength of cardiac guidewires which are in the same group characteristics and end uses. This study considered on three types of steel guidewire strength: Amplatz Ultra Stiff; Lunderquist Extra Stiff; Back – Up Meier Steerable. The AMPLATZ guidewire showed the lowest tensile strength, stiffness and the highest torsion with Young's modulus. The BACK – UP MEIER guidewire has very similar properties to the LUNDERQUIST guidewire.

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