# A Wearable Open-Source Neuroprosthesis/Neuro-Orthosis for Restoring Hand Function

## TL;DR

A low-cost, open-source wearable device was developed to help people with hand impairments regain movement and function through muscle stimulation.

## Contribution

The paper introduces a modular, affordable, and open-source neuroprosthesis system for restoring hand function.

## Key findings

- The system uses EMG and FES to detect user intent and stimulate hand movement.
- The design is replicable and customizable, with components shared on GitHub.
- The device can function as both an orthotic and a rehabilitation tool.

## Abstract

What are the main findings?

An open-source, low-cost neuroprosthesis was developed to restore voluntary hand function in individuals with severe impairment.

The system combines EMG-based intention detection with electrical stimulation in a wearable form factor, enabling hand opening and grasping.

What is the implication of the main finding?

This work presents a complete, low-cost, replicable assistive device for the rehabilitation of functional hand use.

The open-source design empowers researchers, clinicians, and users to adapt and further develop the system according to specific needs.

This paper presents a wearable, open-source system that combines electromyography (EMG) and functional electrical stimulation (FES) to restore hand function in individuals with disabilities caused by cervical spinal cord injuries or stroke. The device captures electrical signals produced during volitional muscle contractions and analyzes them to interpret the user’s intent to move. This information is then used to stimulate impaired muscles, promoting improved hand function and rehabilitation. We detail the design, prototyping, and testing of the system, emphasizing its modularity, affordability, and accessibility. Hardware and software, along with 3D-printable components, are shared via GitHub to enable replication and customization by professionals and makers. The system serves as both an orthotic device for enhancing grasping ability and a therapeutic tool for rehabilitating hemiparetic hands, with potential for broader applications. By addressing cost, customization, and accessibility barriers, this initiative promotes collaboration and further innovation in rehabilitation technologies, advancing the development of affordable, user-centered solutions for individuals with disabilities.