Thesis DISEÑO CONCEPTUAL DE ARTICULACIÓN DE PIE Y TOBILLO PARA PRÓTESIS TRANSFEMORAL DINÁMICA
Date
2022-09
Authors
YAÑEZ ALVARADO, FELIPE IGNACIO
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
El presente trabajo de título tiene como objetivo el diseño de un prototipo de pie dinámico para una prótesis del tipo transfemoral, que permita al usuario realizar moderada actividad física. Esto se realiza con el fin de entregar al usuario de prueba un pie protésico más asequible que los del mercado, debido al elevado precio de este tipo de prótesis que no son fabricadas en nuestro país y deben ser traídas desde el extranjero. Para lograr esta tarea se trabaja con el método de diseño propuesto por Morris Asimow, el cual es adaptado para este proyecto, definiendo la metodología para este trabajo, la cual comienza tomando las necesidades del usuario de prueba, para definir los requerimientos y atributos deseados del producto. Luego se reúne información en el benchmarking y la búsqueda de patentes, en donde se analizan distintos tipos de prótesis que existen en el mercado actual para aprender sobre sus componentes y funciones, con esta información se definen los sistemas del pie y se construye la carta morfológica, la cual se usa de guía para la generación de conceptos. Luego de tener tres propuestas de solución se selecciona una de ellas, mediante la metodología de los pesos ponderados, y se procede a la siguiente etapa en la que se define la lista de piezas que conformarán el prototipo, y además se selecciona el material para fabricar las piezas a diseñar y se definen las piezas comerciales que se utilizarán. Finalmente, las partes que conforman el sistema son modeladas en el software Fusion 360 desde el cual se generan los documentos necesarios para la fabricación del prototipo. El prototipo diseñado cumple con los cálculos teóricos realizados, los que aseguran que debería ser capaz de soportar los requerimientos definidos, y los atributos deseados por el usuario, pero se recomienda realizar simulaciones en distintos puntos críticos del sistema y si es posible construir el prototipo y realizar pruebas para verificar que aspectos del prototipo es necesario corregir o mejorar. Si bien no es posible fabricar el pie diseñado únicamente mediante impresión 3D, los moldes en los que construirán las placas que forman el pie pueden ser impresos en 3D para abaratar los costos de fabricación.
The main objective of this workis to design a dynamic foot prototype for a transfemoral prosthesis, which allows the user to perform moderate physical activities. This is done in order to provide the test user with a prosthetic foot more affordable than those on the market, due to the high commercial value of this type of prosthesis that is not manufactured in our country and must be brought from abroad. To achieve this task, we work with the design method proposed by Morris Asimow, which is adapted for this project. The methodology developed for this work begins by taking the needs of the test user, to define the requirements and desired attributes of the product. The information is gathered in the benchmarking and patent search, where different types of prostheses that exist in the current market are analyzed to learn about their components and functions, with this information the foot systems are defined and the morphological chart is built, which is used as a guide for the generation of concepts. After having three proposed solutions, one is selected using the weighted weights methodology, concept N°3 is selected and we proceed to the next stage in which the list of parts that will form the prototype is defined, the material to manufacture the parts to be designed is selected and the commercial parts to be used are also selected. Finally, the parts that make up the system are modeled in the Fusion 360 software from which the necessary documents for manufacturing of the prototype are generated. The designed prototype complies with the theoretical calculations performed, which ensure that it should be able to support the defined requirements and attributes desired by the user. However, it is recommended to perform simulations at different critical points of the system and if possible build the prototype and perform tests to verify which aspects of the prototype need to be corrected or improved. Although it is not possible to manufacture the designed foot solely by 3D printing, the molds in which the plates that form the foot will be built can be 3D printed to reduce manufacturing costs.
The main objective of this workis to design a dynamic foot prototype for a transfemoral prosthesis, which allows the user to perform moderate physical activities. This is done in order to provide the test user with a prosthetic foot more affordable than those on the market, due to the high commercial value of this type of prosthesis that is not manufactured in our country and must be brought from abroad. To achieve this task, we work with the design method proposed by Morris Asimow, which is adapted for this project. The methodology developed for this work begins by taking the needs of the test user, to define the requirements and desired attributes of the product. The information is gathered in the benchmarking and patent search, where different types of prostheses that exist in the current market are analyzed to learn about their components and functions, with this information the foot systems are defined and the morphological chart is built, which is used as a guide for the generation of concepts. After having three proposed solutions, one is selected using the weighted weights methodology, concept N°3 is selected and we proceed to the next stage in which the list of parts that will form the prototype is defined, the material to manufacture the parts to be designed is selected and the commercial parts to be used are also selected. Finally, the parts that make up the system are modeled in the Fusion 360 software from which the necessary documents for manufacturing of the prototype are generated. The designed prototype complies with the theoretical calculations performed, which ensure that it should be able to support the defined requirements and attributes desired by the user. However, it is recommended to perform simulations at different critical points of the system and if possible build the prototype and perform tests to verify which aspects of the prototype need to be corrected or improved. Although it is not possible to manufacture the designed foot solely by 3D printing, the molds in which the plates that form the foot will be built can be 3D printed to reduce manufacturing costs.
Description
Keywords
PROTESIS , BIOMECANICA , PERSONAS CON DISCAPACIDAD
