Development of a knee prosthesis for transfemoral amputations using computational tools
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Universidad Industrial de Santander
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El presente estudio se basa en el diseño de una prótesis externa de una articulación mono-céntrica de rodilla a partir del análisis de la marcha humana de un paciente previamente seleccionado. Se desarrolla un modelo en 3D y posteriormente se realiza el análisis de esfuerzos y desplazamientos usando un programa CAE basado en el método de los elementos finitos. Seguidamente, se procede a la simulación del proceso de fabricación del dispositivo, para optimizar la fabricación, para ello se usa un software CAM. El uso de programas computacionales de diseño, permite tener una visión completa para el desarrollo de la prótesis de rodilla. Considerando el tiempo desde el inicio del proceso de diseño hasta la obtención del prototipo, se evidencia que el 80% del tiempo fue destinado al proceso CAD/CAM/CAE y el resto al proceso de fabricación y ensamble.
The present investigation is based on the analysis of the human walk, based on the movement of the knee joint to obtain the main parameters, with this data is developed with a mono-centric joint with reference to the characteristics of a patient, A This mechanism perform static analysis by computer, to determine the safety factor, with these data are processed to the simulation of the manufacture of such knee joint. A 3D knee prosthesis is developed from design to manufacturing, this makes 80% of the total time based on the design, analysis and simulation of manufacturing, leaving only 20% to manufacture, And greatly reducing errors and production times since these generate high costs.
The present investigation is based on the analysis of the human walk, based on the movement of the knee joint to obtain the main parameters, with this data is developed with a mono-centric joint with reference to the characteristics of a patient, A This mechanism perform static analysis by computer, to determine the safety factor, with these data are processed to the simulation of the manufacture of such knee joint. A 3D knee prosthesis is developed from design to manufacturing, this makes 80% of the total time based on the design, analysis and simulation of manufacturing, leaving only 20% to manufacture, And greatly reducing errors and production times since these generate high costs.
Keywords
knee prosthesis, transfemoral amputation, finite element method, CAD/CAM/CAE, Mecatrónica, amputación transfemoral, método de elementos finitos, CAD / CAM / CAE, prótesis de rodilla