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Multisensor Classification System for Triggering FES in Order to Support Voluntary Swallowing.

Benjamin Riebold¹, Holger Nahrstaedt¹, Corinna Schultheiss²

¹Control Systems Group, Technische Universität Berlin ; Germany.

European Journal of Translational Myology

|January 13, 2017

Summary

This study introduces a camera system to improve functional electrical stimulation (FES) for dysphagia patients. It reduces false stimulations during swallowing exercises, enhancing therapy effectiveness and patient convenience.

Keywords:

Bioimpedance Classification Dysphagia Electromyography Range Image Camera Triggered Functional Electrical Stimulation

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Published on: April 12, 2016

Area of Science:

Biomedical Engineering
Rehabilitation Technology
Neurology

Background:

Dysphagia impairs larynx and hyoid elevation during swallowing.
Electromyography (EMG) and Bioimpedance (BI) can trigger functional electrical stimulation (FES) for swallowing.
Existing methods face challenges with unintentional FES triggers due to non-swallowing movements.

Purpose of the Study:

To develop a more reliable FES triggering system for dysphagia.
To reduce false FES stimulations caused by non-swallowing head and jaw movements.
To improve the accuracy and usability of FES-assisted swallowing therapy.

Main Methods:

A range image camera system was employed to capture head, mouth, and jaw movements.
A secondary classification algorithm was implemented using camera data to filter triggering events.
Experiments were conducted with healthy subjects to evaluate the system's performance.

Main Results:

The new system significantly reduced potential false FES stimulations by 47%.
The system correctly identified 83% of actual swallowing intentions for FES support.
The camera-based approach offers a more convenient alternative to manual switches for FES triggering.

Conclusions:

A range image camera system effectively reduces false triggers in FES for swallowing.
This technology enhances the precision and practicality of FES-assisted dysphagia rehabilitation.
The findings suggest a promising advancement for improving airway protection and swallowing function.