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Updated: Sep 11, 2025
Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa
Published on: September 27, 2018
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.
Introduction:
Gastric electrical stimulation (GES) is an effective treatment for gastroparesis. However, the available devices are equipped with bulky batteries that need to be replaced regularly by surgery.
Methods:
Our new implantable system consists of only 6 passive components in addition to a diode and does not require a battery. Two acute porcine experiments were carried out with a robotic surgical system for placement of the prototypes. The stimulation parameters were set with an extracorporeal unit and GES was performed. The recorded electromyography (EMG) signal was subjected to a multiresolution analysis.
Results:
The robot-assisted placement of the prototypes was successful. The inductive energy transfer was confirmed to be functional and EMG analysis revealed changes in gastric electrical activity.
Conclusions:
Further technological and rapid regulatory solutions are being sought in order to start a clinical trial with the next generation devices in the near future.
