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Robotic placement of experimental prototypes for wireless gastric electrical stimulation
Jonas F Schiemer1,2, Karen Stumm3, Yves Olsommer4,5
1Department of General, Visceral and Transplant Surgery, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstreet 1, Mainz, 55131, Germany.
Langenbeck'S Archives of Surgery
|August 12, 2025
Summary
This study presents a novel, battery-free implantable system for gastric electrical stimulation (GES) to treat gastroparesis. Robot-assisted surgery successfully implanted the device, demonstrating functional energy transfer and altered gastric activity.
Area of Science:
- Biomedical Engineering
- Gastroenterology
- Medical Devices
Background:
- Gastric electrical stimulation (GES) is a key treatment for gastroparesis.
- Current GES devices require surgical battery replacement, posing patient burden.
Purpose of the Study:
- To develop and evaluate a novel, battery-free implantable GES system.
- To assess the feasibility of robotic-assisted implantation and system functionality.
Main Methods:
- A new implantable system with passive components and no battery was designed.
- Robotic surgical system used for prototype implantation in porcine models.
- Electromyography (EMG) signal analysis to evaluate gastric electrical activity changes.
Main Results:
- Successful robot-assisted implantation of the GES prototypes.
- Confirmed functional inductive energy transfer to the implant.
- Demonstrated significant changes in gastric electrical activity via EMG analysis.
Conclusions:
- The battery-free GES system shows promise for gastroparesis treatment.
- Further development and regulatory pathways are needed for clinical trials.
