A wireless system for gastric slow wave acquisition and gastric electrical stimulation

Abstract

We have developed a wireless system suitable for acquiring gastric slow wave activities and delivering electrical pulses to the stomach. The system is composed of a physically miniaturized front-end that can record slow waves from 3 channels and transmit the data to a back-end connected to a computer. A custom-made graphical user interface can display the slow waves in real-time and store them for off-line analysis. The user can turn on a switch on the back-end to activate electrical stimulation capability on the front-end. The electrical stimulation on the front-end is fixed at 4 mA with a pulse width of 300 ms. The front-end measures 13×44×4 mm3, allowing future implantation. The system performance was successful in bench-top testing and will be validated in animal models.