An endoscopic wireless gastrostimulator (with video)
Related Experiment Video
Updated: May 25, 2026

Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa
Published on: September 27, 2018
Sanchali Deb1, Shou-Jiang Tang, Thomas L Abell
1Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX.
Background:
Gastric electric stimulation (GES) at a high-frequency, low-energy setting is an option for treating refractory gastroparesis. The currently available commercial stimulator, the Enterra neurostimulator (Medtronic Inc, Minneapolis, MN), however, requires surgical implantation and is powered by a nonrechargeable battery.
Objective:
To develop and test a miniature wireless GES device for endoscopic implantation in an experimental model.
Design:
In-vivo gastric signals were recorded and measured in a nonsurvival swine model (n = 2; 110-lb animals).
Intervention:
An endoscopically placed, wireless GES device was inserted into the stomach through an overtube; the two GES electrodes were endoscopically attached to the gastric mucosa and secured with endoclips to permit stimulation.
Main Outcome Measurements:
Stable electrogastrogram measures were observed during GES stimulation.
Results:
Electrogastrogram recordings demonstrated that gastric slow waves became more regular and of constant amplitudes when stomach tissues were stimulated, in comparison with no stimulation. The frequency-to-amplitude ratio also changed significantly with stimulation.
Limitation:
Nonsurvival pig studies.
Conclusion:
Gastric electric stimulation is feasible by our endoscopically implanted, wireless GES device.
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