FDA Clears Cuffless Smart Ring Technology for Continuous Blood Pressure Monitoring

The U.S. Food and Drug Administration has granted clearance to Happy Health's optical smart ring for continuous blood pressure measurement without requiring an inflatable cuff or periodic recalibration, marking a significant advancement in wearable cardiovascular monitoring. The 510(k) clearance under product code DXN establishes a new regulatory precedent for passive, non-invasive hemodynamic surveillance that can capture dynamic pressure variations throughout the day and night. This innovation addresses longstanding limitations of traditional cuff-based measurements, which cannot provide continuous monitoring and often disrupt sleep during nighttime assessments.

Traditional blood pressure monitoring has depended on inflatable arm cuffs for over a century, a method that captures only isolated measurements and frequently disrupts patient sleep during nighttime monitoring. The Happy Health smart ring represents a departure from this approach by using optical sensors embedded in wearable technology to track blood pressure continuously throughout daily and nightly cycles without requiring external calibration devices or patient intervention.

The regulatory pathway demonstrates how the technology builds incrementally on established wearable infrastructure. Happy Health's ring originally received FDA clearance in 2024 as a general physiological monitor capable of tracking multiple vital signs including heart rate and oxygen saturation. The 2026 expansion specifically authorizes blood pressure measurement as a clinical-grade diagnostic function, positioning the device within the same regulatory category as traditional non-invasive monitoring systems.