A new modular neuroprosthesis suitable for hybrid FES-robot applications and tailored assistance

Journal of NeuroEngineering and Rehabilitation, 2024 · DOI: https://doi.org/10.1186/s12984-024-01450-6 · Published: January 1, 2024

Assistive Technology Rehabilitation Biomedical

Simple Explanation

Functional electrical stimulation (FES) is a technique used to help people with neurological disorders move better. However, it has limitations such as causing muscle fatigue. To address these limitations, researchers have combined FES with robotic devices to create hybrid systems. This study introduces a new modular neuroprosthetic (NP) system designed to work with both FES and robotic systems. This system is flexible, scalable, and can be personalized to meet the specific needs of each user. The system's effectiveness was tested on individuals with spinal cord injury or stroke, demonstrating its ability to adapt to different assistance needs and improve gait kinematic metrics.

Study Duration

Not specified

Participants

Four individuals with spinal cord injury or stroke

Evidence Level

Not specified

Key Findings

1
A modular NP system was developed, characterized by its flexibility, scalability, and personalization capabilities, with excellent connection characteristics for integration with robotic devices.
2
The system meets rigorous requirements for safe use by incorporating appropriate safety protocols, and features appropriate battery autonomy, weight and dimensions.
3
Personalized configurations demonstrated an impact on kinematic gait patterns comparable to other devices in the literature.

Research Summary

This study introduces a modular neuroprosthetic (NP) system designed for hybrid FES-robot applications, addressing limitations of FES by combining it with robotic devices. The developed system showcases flexibility, scalability, and personalization capabilities, enabling tailored configurations for individuals with spinal cord injury or stroke. Experimental results demonstrate the system's versatility and capacity to be combined with robotic devices, adapting well to gait applications and yielding kinematic impacts comparable to existing devices.

Practical Implications

Personalized Rehabilitation

The modular design allows for tailored rehabilitation programs based on individual patient needs and conditions.

Hybrid System Integration

The system facilitates the integration of FES with robotic devices, potentially enhancing rehabilitation outcomes through combined assistance.

Versatile Application

The adaptability of the system to different contexts and applications makes it a valuable tool for a wide range of rehabilitation scenarios.

Study Limitations

1
The open-loop control system has limitations, and in hybrid systems, it is necessary to address the challenges introduced by hybrid actuation control, such as actuation redundancy.
2
Trapezoidal pulse trains have not been shown to be optimal either, although they are the most widespread and widely used.
3
A limitation of this study is that we did not get to test the closed loop due to time constraints for implementation.

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