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3D-printed model of simulation for acute thrombus removal in peripheral arteries. | LitMetric
Background : Surgical training and evaluation of medical devices require simulation models. The aim of this study was to assess a 3D-printed model as a training model for peripheral endovascular procedures, including thromboaspiration in acute limb ischemia (ALI).Methods : The 3D-simulation model was modeled from an aorta and lower limbs CT scan by segmentation of the arterial light. The 3D simulator was printed in multimaterial with photo-polymerizable resins (Polyjet). The simulator consisted of interchangeable cartridges intended to reproduce the lower limb vasculature. The simulator was connected to a pump to obtain a pulsative flow. A gelled product was positioned in a cartridge just above a stenosis in order to simulate an ALI by in-situ thrombosis. Vascular interventionalists should perform a thrombo-aspiration (Indigo, Penumbra Inc., Alameda, CA, USA) by crossover in an experimental hybrid room (Discovery, General Electric, Boston, MA, USA). The analysis of the results was based on the feedback of vascular interventionalists using a Likert Psychometric Scale.Results : A total of 6 vascular surgeons performed two training sessions in real-life conditions. Access to the target lesion was achieved by cross-over or antegrade approach with an 8 F - 45 cm introducer. An angiogram was used to localize the thrombus. Due to the flow, a part of the thrombus was migrating from femoropopliteal segment to below the knee level. Thromboaspiration was realized by Indigo (Penumbra Inc.) CAT-8 and -6 with separators. The average score out of 5 was 4.5 (±0.55) regarding anatomical reproducibility, 4.3 (±0.82) for navigation, and 4.5 (±0.84) for aspiration. The didactical evaluation showed a score of 4.3 (±0.52) for improving technical skills. The improvement of the confidence score in the simulator was +1.2 (±1.72).Conclusions : The 3D-simulation model for peripheral endovascular procedures provides a realistic training for thromboaspiration. This model could mimic different types of peripheral arterial pathologies and participate to the vascular interventionalists training.
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