Performance Assessment of a Radiofrequency Powered Guidewire for Crossing Peripheral Arterial Occlusions Based on Lesion Morphology

摘要: Endovascular wires and devices for peripheral arterial disease therapy have evolved greatly, yet failure rates of these procedures remain high. Information on lesion composition may inform device selection to improve the success procedures. This paper, presents an approach informed guidewire selection. The objective this study is quantitatively assess performance a radiofrequency powered in crossing various morphology types chronic total occlusions. Samples taken from amputated patient limbs are characterized by magnetic resonance imaging. Using customized catheter test station, puncturing lesions compared conventional guidewire, itself when not powered. analysis includes quantitative statistical comparisons puncture forces experienced different guidewires “hard” vs. “soft” as well qualitative assessment deflections, buckling wires. Results indicate that use ablation significantly reduces required force, reduced events deflection, resulted higher rate.