The influence of the Re-Link Trainer on gait symmetry in healthy adults

Ward, Sarah; Wiedemann, Lukas; Stinear, Cathy M.; Stinear, James W.; McDaid, Andrew

doi:10.1109/icorr.2017.8009259

Cited by 5 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the left side, i.e., the inactive side, shows a significant reduction in peak knee flexion during TM ( ρ = 0.01). On the other hand, hip kinematics remains untouched while being assisted by the AGoRA exoskeleton since no noteworthy differences were found while the peak hip flexion/extension values lie close to typical values found for healthy subjects during unconstrained overground walking ( Ward et al, 2017 ; Fukuchi et al, 2018 ).…”

Section: Resultssupporting

confidence: 56%

Effects of stance control via hidden Markov model-based gait phase detection on healthy users of an active hip-knee exoskeleton

Sanchez-Manchola

Arciniegas-Mayag

Múnera

et al. 2023

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Introduction: In the past years, robotic lower-limb exoskeletons have become a powerful tool to help clinicians improve the rehabilitation process of patients who have suffered from neurological disorders, such as stroke, by applying intensive and repetitive training. However, active subject participation is considered to be an important feature to promote neuroplasticity during gait training. To this end, the present study presents the performance assessment of the AGoRA exoskeleton, a stance-controlled wearable device designed to assist overground walking by unilaterally actuating the knee and hip joints.Methods: The exoskeleton’s control approach relies on an admittance controller, that varies the system impedance according to the gait phase detected through an adaptive method based on a hidden Markov model. This strategy seeks to comply with the assistance-as-needed rationale, i.e., an assistive device should only intervene when the patient is in need by applying Human-Robot interaction (HRI). As a proof of concept of such a control strategy, a pilot study comparing three experimental conditions (i.e., unassisted, transparent mode, and stance control mode) was carried out to evaluate the exoskeleton’s short-term effects on the overground gait pattern of healthy subjects. Gait spatiotemporal parameters and lower-limb kinematics were captured using a 3D-motion analysis system Vicon during the walking trials.Results and Discussion: By having found only significant differences between the actuated conditions and the unassisted condition in terms of gait velocity (ρ = 0.048) and knee flexion (ρ ≤ 0.001), the performance of the AGoRA exoskeleton seems to be comparable to those identified in previous studies found in the literature. This outcome also suggests that future efforts should focus on the improvement of the fastening system in pursuit of kinematic compatibility and enhanced compliance.

show abstract

Section: Resultssupporting

confidence: 56%

Effects of stance control via hidden Markov model-based gait phase detection on healthy users of an active hip-knee exoskeleton

Sanchez-Manchola

Arciniegas-Mayag

Múnera

et al. 2023

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…In addition to the variety of sensing technologies for gait monitoring, researchers have proposed various systems for assisting patients with impaired gait. For example, Ward et al [147] developed a modified walking frame with a linkage system to assist patients to perform normal gait. The device was named the R-Link Trainer (RLT).…”

Section: Gait Monitoring and Assistive Technologiesmentioning

confidence: 99%

Sensing and actuation technologies for smart socket prostheses

Gupta

Loh

Pedtke³

2019

Biomed. Eng. Lett.

View full text Add to dashboard Cite

The socket is the most critical part of every lower-limb prosthetic system, since it serves as the interfacial component that connects the residual limb with the artificial system. However, many amputees abandon their socket prostheses due to the high-level of discomfort caused by the poor interaction between the socket and residual limb. In general, socket prosthesis performance is determined by three main factors, namely, residual limb-socket interfacial stress, volume fluctuation of the residual limb, and temperature. This review paper summarizes the various sensing and actuation solutions that have been proposed for improving socket performance and for realizing next-generation socket prostheses. The working principles of different sensors and how they have been tested or used for monitoring the socket interface are discussed. Furthermore, various actuation methods that have been proposed for actively modifying and improving the socket interface are also reviewed. Through the continued development and integration of these sensing and actuation technologies, the long-term vision is to realize smart socket prostheses. Such smart socket systems will not only function as a socket prosthesis but will also be able to sense parameters that cause amputee discomfort and self-adjust to optimize its fit, function, and performance.

show abstract

“…Ward et al [39,40] proposed a nonmotorized overground device. The Re-Link Trainer consists of a four-bar linkage design strapped to the patient's foot.…”

Section: Literature Reviewmentioning

confidence: 99%

Conceptual design of a rehabilitation device based on cam-follower and crank-rocker mechanisms hand actioned

Gonçalves

Soares

Carvalho

2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Several works present exoskeletons and devices acting in the hip, the knee and the ankle of patients with some kind of limitation on the lower limbs movement, aiding patients' locomotion/rehabilitation. The challenges in exoskeletons development for paraplegics' locomotion are related with obtaining a compact and low-mass design with long battery life. Furthermore, the robotic devices to lower limb rehabilitation are very expensive complex systems mainly due to the technology of servomotors, drivers and control system; thus, a simpler device tends to make patients feel more comfortable and safer, which is important to gain their acceptance. Hence, the aim of this paper is developing a new exoskeleton with one degree of freedom, low cost, to locomotion/rehabilitation of subjects with paralysis/motor disability in the lower limbs, powered by the user's strength, reproducing on them the ability to walk with stability and security. This leads to decreasing the problems related to the lack of movement and the consequent improvement in the paraplegics' life quality. The proposed device was developed using a combination of simple mechanisms to obtain the approximate human gait movement. In order to achieve the proposed objective, we present the mechanism synthesis, graphical simulations and experimental test of the simplified prototype built. The graphical simulations and the experimental results show that the proposed device performs properly on the hip and knee joints movement but with smaller amplitude.

show abstract

The influence of the Re-Link Trainer on gait symmetry in healthy adults

Cited by 5 publications

References 28 publications

Effects of stance control via hidden Markov model-based gait phase detection on healthy users of an active hip-knee exoskeleton

Effects of stance control via hidden Markov model-based gait phase detection on healthy users of an active hip-knee exoskeleton

Sensing and actuation technologies for smart socket prostheses

Conceptual design of a rehabilitation device based on cam-follower and crank-rocker mechanisms hand actioned

Contact Info

Product

Resources

About