Wrist Rehabilitation Device Research Articles

Wrist Rehabilitation Device Using Pneumatic Parallel Manipulator Based on EMG Signal

In this study, we focus on a rehabilitation motion of human wrist joint and aim at supporting these rehabilitation training by introducing a mechanical system. A pneumatic parallel manipulator is introduced since it can drive enough D.O.F to correspond to a wrist motion and has inherent compliance characteristics resulted from air compressibility. We propose a new training method for a muscle strengthening training based on ElectroMyoGraphy (EMG), where a payload is set between joint angle and the muscle we want to train directly. In addition, we propose a method to detect muscle fatigue based on a frequency analysis of EMG. The effectiveness of the proposed method is confirmed through some experiments.

Computer Controlled Rotational MR-brake for Wrist Rehabilitation Device

This aricle presents a novel, computer controlled, magneto-rheological (MR) brake actuated, muscular rehabilitation, and evaluation device. The first part discusses various MR brake architectures and compares them. Simple analytical formulae are developed for a set of figures of merit, which point out the role played by the various parameters. Based on this analysis, a prototype with a T-shaped rotor has been designed, built and integrated into a portable rehabilitation device. In the second part of the article, the various exercise modes of the device and its control are described. Finally, results validating the performances of the device for the pronation/supination motion of the wrist are shown.

MR-Tech: A portable smart wrist rehabilitation device

The purpose of this paper is to present a novel patent-pending, computer controlled, MR-brake actuated, muscular rehabilitation and evaluation device that can be carried to and used at patient's home (without the immediate assistance of the physiotherapist), offering similar functionalities as existing stationary devices that can be found in hospitals (i.e. isometric, isotonic and isokinetic exercise modes). The first part of the paper describes in more details these various exercise modes. The second part is devoted to the design of the machine and the third part to its control. The last part presents preliminary results obtained for the wrist pronation/supination motion.