Transtimulation Research Inc (TRI)
Neuromodulation device aimed at treating neurogenic bowel dysfunction in individuals with spinal cord injury.

Transtimulation Research Inc (TRI) is a medical device start-up focused on developing therapeutic and diagnostic products for restoring health in people with gastrointestinal disorders. With offices in Oklahoma City, OK, and Pasadena, CA, TRI’s team consists of experienced engineers, scientists, and clinical experts. The company is supported by funding from the National Institutes of Health, highlighting its commitment to innovative healthcare solutions. TRI selected our engineering services for this project due to our proven track record in developing advanced hardware and embedded software for medical devices.
We developed a comprehensive hardware and software solution for the AccelBand, a wearable neuromodulation device based on the nRF52840 SoC. The hardware included a custom-designed stimulation circuit to deliver precise neuromodulation, an impedance measurement circuit for real-time monitoring, and a calibration circuit to ensure consistent performance across different users. On the software side, we implemented an event-driven architecture using RTOS, with C++ programming providing the necessary flexibility and scalability. The system’s embedded software was designed to manage power efficiently and ensure reliable operation in real-world conditions.


The AccelBand project successfully moved from concept to feasibility, overcoming significant technical challenges related to signal processing, power management, and multi-channel coordination. The integration of a robust hardware design with a scalable software architecture resulted in a highly effective neuromodulation device. The project not only met TRI’s specifications but also set a new standard for wearable therapeutic devices in the neurogenic bowel dysfunction market. The innovative features and customizations tailored to TRI’s needs have positioned the AccelBand as a groundbreaking solution, enhancing TRI’s product portfolio and improving the quality of life for patients.
optimized for continuous motion monitoring
embedded design for extended battery life
transcutaneous neuromodulation

Precision neuromodulation in a compact wearable system