Model-Based Systems Engineering of a Hand Rehabilitation Device

Abstract

We have developed a robotic exoskeleton to restore and rehab hand and finger function. The robotic exoskeleton is a hybrid actuated mechanism rehabilitation system, in which each finger is attached to an instrumented lead screw mechanism allowing force and position control according to the normal human setting. The robotic device, whose implemented is based on biomechanics measurements, able to assist the subject in flexion and extension motion. It also compatible with various shapes and sizes of human‘s finger. Main features of the interface include an integration of DC servo motor and lead screw mechanism which allows independent motion of the five fingers with small actuators. The device is easily transportable, user safety precaution, and offer multiple mode of training potentials. This paper presents the measurements implemented in the system to determine the requirements for finger and hand rehabilitation device, the design and characteristic of the whole system.

Development of a Quantitative Assessment System for Upper Limb Motor Disorder in Occupational Therapy

“…In comparing the method used by measuring the repeated number of movements by a medical institution and the subjective judgement by physicians and physiotherapists, it was clear that the measurement system used was a more objective and quantitative evaluation method. According to Lee et al, the upper limb motor function rehabilitation system can be evaluated by the parameters such as operating speed, working distance, error and other parameters during the movement of the training to recognize the behavior of the upper limb movement function [19]. Furthermore, even in clinical practice, especially to assess the patients with motor function disorder, the working distance and movement pattern is studied to observe the improvement of motor function recovery.…”

System Integration of Finger Contracture Prevention System Device for Early Post Stroke Rehabilitation

“…Conversely, the torque, T necessary to drive the mechanism may be computed through Equation (2). FT is the total force exerted on the finger phalanges, and P represents pitch of lead screw assembly.…”

“…In this stage, spasticity does not exist any longer and the coordination improves significantly and beyond this stage, normal function is completely re-stored. Needless to mention, that the key for motor recovery lies in acute patient care, in which passive range of joint movement is performed to prevent and correct muscle contractures [2]. More often than not, finger deformity disorders are associated with stroke [3].…”

Finite Element Analysis of a Transtibial prosthetic during Gait Cycle

“…This simulation advantage to determine the theoretical speed and acceleration of the prototype during the gait cycle [12,13,14] after completed assembled. The properties and the specification of the prototype has been developed to be similar as the previous literature with added value of cost-effective material [15,16]. Then, the results obtained have been compared to the selected journal which related to the scope of preliminary studies.…”