A Badrou1, N Tardif1, A Even1, P Chaudet1, N Lescanne2, J Szewczyk2,3, A Gravouil1, N Hamila4, A Bel-Brunon5. 1. Univ Lyon, INSA Lyon, CNRS, LaMCoS, UMR5259, 69621, Villeurbanne, France. 2. BaseCamp Vascular (BCV), 75005, Paris, France. 3. Sorbonne Université, CNRS, INSERM, Institut des Systèmes Intelligents et de Robotique, ISIR, ISIR - AGATHE, 75005, Paris, France. 4. Ecole Nationale d'Ingénieurs de Brest, ENIB, UMR CNRS 6027, IRDL, 29200, Brest, France. 5. Univ Lyon, INSA Lyon, CNRS, LaMCoS, UMR5259, 69621, Villeurbanne, France. aline.bel-brunon@insa-lyon.fr.
Abstract
PURPOSE: The aim of this work was to mechanically characterize a specific active guidewire and catheters that are commercially available, for further implementation into numerical simulation of endovascular navigation towards complex targets. METHODS: For the guidewire, 3-point bending tests and bending with added masses were used to obtain the Young moduli of its various components. To study its behavior, the guidewire was activated under "ideal" conditions and its performance was investigated. As for the various catheters, they were measured and 3-point bending tests were conducted to determine their mechanical properties. RESULTS & CONCLUSION: The Young moduli of the shaft and the distal tip of the guidewire were determined. We defined a suitable current intensity to activate the guidewire related to an optimal curvature. Then, the time of activation/deactivation was measured at 1.7 s. On the flip side, parts of the catheters were considered either elastic or viscoelastic. In all cases, the rigidity gradients along the various catheters were highlighted. The characterization of the aforementioned surgical tools provides the opportunity to simulate the endovascular nagivation process.
PURPOSE: The aim of this work was to mechanically characterize a specific active guidewire and catheters that are commercially available, for further implementation into numerical simulation of endovascular navigation towards complex targets. METHODS: For the guidewire, 3-point bending tests and bending with added masses were used to obtain the Young moduli of its various components. To study its behavior, the guidewire was activated under "ideal" conditions and its performance was investigated. As for the various catheters, they were measured and 3-point bending tests were conducted to determine their mechanical properties. RESULTS & CONCLUSION: The Young moduli of the shaft and the distal tip of the guidewire were determined. We defined a suitable current intensity to activate the guidewire related to an optimal curvature. Then, the time of activation/deactivation was measured at 1.7 s. On the flip side, parts of the catheters were considered either elastic or viscoelastic. In all cases, the rigidity gradients along the various catheters were highlighted. The characterization of the aforementioned surgical tools provides the opportunity to simulate the endovascular nagivation process.
Authors: Russell C Lam; Stephanie C Lin; Brian DeRubertis; Robert Hynecek; K Craig Kent; Peter L Faries Journal: J Vasc Surg Date: 2007-05 Impact factor: 4.268
Authors: Surabhi Madhwal; Vivek Rajagopal; Deepak L Bhatt; Christopher T Bajzer; Patrick Whitlow; Samir R Kapadia Journal: J Invasive Cardiol Date: 2008-05 Impact factor: 2.022