The research, presented by leading cardiologists, highlights the device's ability to provide reliable 24-hour monitoring where irregular pulses or high variability previously hindered accurate readings. Professor Ki-Hong Lee of Chonnam National University Hospital reported an 80% analyzable data rate in atrial fibrillation patients, allowing for continuous observation of nocturnal blood pressure patterns. Simultaneously, Professor In-Cheol Kim of Keimyung University Dongsan Hospital confirmed that the device meets the stringent error margin criteria set by the European Society of Hypertension (ESH) for heart failure patients with a mean ejection fraction of 29%.
Sky Labs Validates Ring-Type Blood Pressure Monitoring at ESC 2026
At the ESC Congress 2026 in Munich, Sky Labs unveiled clinical evidence for its CART ring-type monitor, marking the first time this wearable technology has demonstrated consistent utility in managing patients with atrial fibrillation and severe heart failure by overcoming the limitations of traditional inflatable cuffs.

Beyond basic monitoring, the device has undergone rigorous validation across multiple clinical scenarios, including exercise and sleep-related tests. Professor Jong-Chan Youn of Seoul St. Mary’s Hospital utilized the monitor to track over 12,000 breathing disorder events in sleep apnea patients, successfully capturing blood pressure surges linked to respiratory recovery. With over 300,000 cumulative prescriptions in South Korea and official inclusion in the 2026 Korean Society of Hypertension Guidelines, CEO Jack ByungHwan Lee signaled that these findings serve as the foundation for an aggressive expansion into European and global clinical markets.


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