Modeling and Simulation of Rehabilitation/Assistive Device for Stroke Effected Hand

Abstract

With the intent of enhancing the rehabilitation and training of stroke patients, we present the design and validation of cost-effective, configurable, lightweight, and convenient rehabilitation equipment for the hand. The goal of this research is to decrease spasticity, paresis, and muscular tone immediately following a stroke. This rehabilitation gadget can do opening/closing, pronation/supination of the hand, and flexion/extension of the arm and hand. This concept is based on earlier Slider propelled hand exoskeleton work with the similar kinematics, but with a focus on improving DOF, economic viability, and some design modifications to make assembly easier. 3 Four distinct movements were achieved using servo motors and an actuator. The components were designed in 3-D using PTC Creo2.0 software. The same software was used for assembly, simulation, and investigations such as kinematic, dynamic, and static. The preliminary findings are given. The highest angular velocity obtained to curl and open fingers is 12.77deg/sec with a force equivalent to 1.5N per finger, and the allowed Range of Motion (ROM) is -30o for supination and 90o for pronation with this device. The highest von-Mises stresses operating on the finger mechanism are 3.14e+2 kPa, with a deflection of 1.37e-5 mm, according to static analysis.