NeuroSigma Announces FDA 510(k) Submission for Second Generation Monarch eTNS System

LOS ANGELES, Nov. 07, 2023 (GLOBE NEWSWIRE) -- NeuroSigma today announced it has submitted a 510(k) premarket notification to the U.S. Food and Drug Administration (FDA) for its second-generation Monarch eTNS System™ (Monarch 2.0). The Monarch eTNS System was the first-ever wearable medical device to receive FDA clearance as a treatment for pediatric ADHD, and the 510(k) submission is the first step in the FDA review process to obtain clearance for Monarch 2.0.

Compared to the first-generation Monarch eTNS System, Monarch 2.0 has a smaller form factor, streamlined user interface, and an improved, longer duration battery. Once cleared, the Monarch 2.0 will also serve as the foundation for NeuroSigma’s proprietary digital health platform.

“Submission of the 510(k) for Monarch 2.0 is an important milestone for NeuroSigma and we look forward to working with FDA to obtain clearance,” said Colin Kealey, M.D., President and CEO of NeuroSigma. “The Monarch 2.0 is a critical part of NeuroSigma’s global corporate strategy, and will allow us to achieve the scale necessary to deliver safe and reliable trigeminal nerve stimulation therapy to the millions of patients worldwide suffering from ADHD.”

About NeuroSigma
NeuroSigma is a Los Angeles, California-based bioelectronic medical device company developing technologies to transform medical practice and patients' lives. The company is commercializing the Monarch eTNS System, which is the first non-drug treatment for pediatric ADHD cleared by the FDA. Pipeline indications for the Monarch and NeuroSigma’s TNS platform include a wide spectrum of neurological and neuropsychiatric disorders, such as ADHD, drug-resistant epilepsy, and depression. For more information about NeuroSigma, please visit For more information on the Monarch eTNS System, please visit

Colin Kealey, M.D., President of NeuroSigma at