Design of customized additive manufactured exoskeleton for functional rehabilitation in patients with myopathies

Additive Manufacturing refers to a process by which digital 3D design data is used to build up a component in layers by depositing material. This paper proposes the benefits of additive manufacturing (AM) within prosthetic device manufacturing, especially for the customization of exoskeleton for Muscular Disorder patients. This work starts with the patient’s CT scan data of the lower limb in DICOM format is exported into MIMICS software to stack 2D scan data into 3D model. Then 3D models are imported into 3matic software, to modeling a Top and Bottom braces with a suitable scaling factor, and create connecting structural arrangements in proper dimensions. Wall thickness analysis has been carried out in 3matic software, to find out the standard deviation of top and bottom braces is valued as 1.65mm. The clinical gait analysis data were evaluated and determined, a 100 kg system, the torque required for knee extension during stair climbing was 140 Nm and 50 Nm during walking. The weight of the leg exoskeleton suit will be reduced by using ABS material, for part fabrication and Pneumatic Muscle Actuator (PMA) will be adopted for actuating a knee exoskeleton. Through this promising technique, the actual process of prosthesis design in rehabilitation technology is improved by applying reverse engineering and additive manufacturing technologies. The outcome of this work is a personalized prosthesis building procedure that should allow an exoskeleton best fit and avoid the numerous iterations done until a proper fit is obtained with traditional methods. 

This article is published in peer review journal and open access journal, International journal of research in engineering and innovation (IJREI) which have a high impact factor journal for more details regarding this article, please go through our journal website.

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