Diseño de una silla de ruedas postural-bipedestadora con sistema de rehabilitación muscular (pantorrilla) para niños con parálisis cerebral

Abstract

In the present degree work, a postural-standing wheelchair with a muscular rehabilitation system (calf) was designed for children with cerebral palsy with a maximum weight of 50 kg, which will guarantee a correct posture in a sitting and standing position at 800, it will allow the inclination in a sitting position up to 300 and will adopt the position of a stretcher. A comfortable muscular rehabilitation system similar to a common bicycle is adapted to the design, the dimension of each element of this design considers maximum and minimum measurements taken from 8 children with PCI of different ages in a range of 3-12 years and measurements of Already existing children's anthropometric tables, the ASTM A 500 grade A material was selected, due to its low cost, high accessibility, high strength and durability, easy handling and welding. For the selection of profiles, the corresponding calculation was made based on the specification for steel constructions AISC 360-16, when the standing postural chair is at its maximum dimensions, since, if the selected profiles support the maximum weight considered, they will support lower weights. To guarantee the safety of the user, a static analysis of the structure was performed in SolidWorks software and dynamic analysis in Adams software for the different positions, which determined that there are low displacement and strain values and a predominant safety factor and appropriate greater than 2, a fairly high value in terms of structural design. It is concluded that each of the objectives proposed in this degree work was met, however it is recommended to build the proposed design to carry out real tests and thus corroborate the results obtained by the software used.