Non-Invasive Vagus Stimulation and Vagus Health Diagnostics. Sleep Help. Vagus Stimulaiton Medical Device Development | Vagus Health is doing Non-Invasive Wellness Vagus Nerve Stimulation Systems and Devices to help sleep, reduce stress and improve immunity. Brainwave EEG and Heartrate Stress ECG with Vagus Health Dignostics Systems. Vagus Health Systems use for instance a ring sensor that measure ECG while wearing it on the index finger. We individualize vagus stimlation with big data real time cloud AI. Wearable devices only. Sleep Help launch in 2019