We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
Thermo Fisher Scientific - Direct Effect Media

Download Mobile App




Events

ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.

Robotic Device Helps Stroke Survivors Recover Movement

By HospiMedica International staff writers
Posted on 22 Jun 2017
Print article
Image: An experimental setup for the estimation of 3DOF human forearm and wrist impedance (Photo courtesy of UNIST).
Image: An experimental setup for the estimation of 3DOF human forearm and wrist impedance (Photo courtesy of UNIST).
A new study describes how robotic-assisted rehabilitation therapy can assess muscle activity and movement dysfunction in stroke survivors, helping to improve their mobility.

Developed by researchers at Ulsan National Institute of Science and Technology (UNIST; Republic of Korea), Korea Advanced Institute of Science and Technology (KAIST; Daejeon, Republic of Korea) and other institutions, the rehabilitation robotic system measures forearm prono-supination, wrist flexion-extension, and radial-ulnar deviation (collectively known as the three degree-of-freedom (3DOF) impedance in just minutes. The system uses the distal internal model based impedance control (dIMBIC)-based method, which accurately characterizes the 3DOF forearm and wrist impedance, including inertia, damping, and stiffness.

The accuracy and reliability of the system were experimentally validated using a robot with substantial nonlinear joint friction. The 3DOF human forearm and wrist impedance of eight healthy subjects was reliably characterized, and its linear behavior helped verify the dIMBIC-based method. The researchers suggest that dIMBIC 3DOF impedance estimation can promote motor control studies and complement the diagnosis of altered wrist and forearm resistance post-stroke by providing objective impedance estimates, including cross-coupled terms. The study was published in the May 2017 issue of IEEE Transactions on Neural Systems and Rehabilitation Engineering.

“The dIMBIC-based method can be used to assist in the quantitative and objective evaluation of neurological disorders, like stroke,” said senior author Professor Sang Hoon Kang, PhD, of the UNIST department of system design and control engineering, robotics, and rehabilitation engineering laboratory. “Findings from this study will open a new chapter in robot-assisted rehabilitation in the workplace accident rehabilitation hospitals, as well as in nursing homes and assisted living facilities.”

Human upper limb movement has been studied in detail, with the basic movements defined as roll – a rotational movement; yaw – a sideways movement in a horizontal plane; and pitch – an up and down movement in vertical plane. The human upper limb has seven degrees of freedom - three in the shoulder, one in the elbow, and another three in wrist.

Related Links:
Ulsan National Institute of Science and Technology
Korea Advanced Institute of Science and Technology

Print article

Channels

Critical Care

view channel
Image: EsoGuard has demonstrated over 90% specificity and 90% sensitivity in identifying Barrett’s Esophagus (Photo courtesy of Lucid Diagnostics)

Biomarker Based Non-Endoscopic Technology Identifies Risk for Esophageal Cancer

Barrett's esophagus (BE) is the benign and treatable precursor condition to esophageal adenocarcinomas (EAC) which is usually diagnosed at an advanced stage and is difficult to treat. Finding BE, a sign... Read more

Surgical Techniques

view channel
Image: Bio-glue enables near-instantaneous gelling, sealing and healing of injured tissue (Photo courtesy of Pexels)

Game-Changing ‘Bio-Glue’ Could End Use of Surgical Sutures and Staple

Tissue adhesive washout and detachment are major issues for medical practitioners and may prove fatal for patients, especially when the separation happens in vital organs like the lungs, liver and the heart.... Read more

Health IT

view channel
Image: AI can reveal a patient`s heart health (Photo courtesy of Mayo Clinic)

AI Trained for Specific Vocal Biomarkers Could Accurately Predict Coronary Artery Disease

Earlier studies have examined the use of voice analysis for identifying voice markers associated with coronary artery disease (CAD) and heart failure. Other research groups have explored the use of similar... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.