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Stretchable, Flexible, Breathable, Self-Adhesive Epidermal Hand sEMG Sensor System.

Kerong Yang^1,2, Senhao Zhang², Xuhui Hu²

¹Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei 230022, China.

Bioengineering (Basel, Switzerland)

|February 23, 2024

Summary

Researchers developed a new epidermal sensor system for high-quality surface electromyographic (sEMG) monitoring during hand function rehabilitation. This flexible, stretchable sensor enables real-time muscle activation tracking for improved training and prosthetic control.

Keywords:

epidermal sEMG sensor hand function rehabilitation sensor fabrication design stretchable structure design

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Area of Science:

Biomedical Engineering
Rehabilitation Technology
Wearable Sensors

Background:

Effective hand function rehabilitation requires precise monitoring of muscle activation.
Existing surface electromyographic (sEMG) sensors face challenges in real-time, high-quality signal acquisition on the hand due to small surface areas and skin deformation.

Purpose of the Study:

To develop a novel stretchable, flexible, breathable, and self-adhesive epidermal sEMG sensor system for improved hand function monitoring.
To enable real-time, multi-channel sEMG signal acquisition for muscle activation during rehabilitation.

Main Methods:

Designed an epidermal sEMG sensor with an optimized serpentine structure for enhanced stretchability and filling ratio.
Incorporated a carving design to minimize wiring and maximize electrode space.
Utilized a low-cost fabrication and cauterization design for scalability.
Integrated the sensor with customized wireless data acquisition hardware.

Main Results:

The sensor system achieved high-quality, real-time, multi-channel sEMG monitoring of muscle activation during hand function rehabilitation exercises.
The optimized structure and design ensured reliable signal acquisition despite skin deformation.
The system demonstrated potential for large-scale production due to its low-cost fabrication.

Conclusions:

The developed epidermal sEMG sensor system offers a new, effective tool for monitoring hand function rehabilitation.
It can aid in assessing rehabilitation outcomes and advance research in areas like prosthetic control.
The sensor's design addresses key challenges in wearable sEMG acquisition for hand applications.