Munich – September 09, 2026 -- Sky Labs presented new clinical trial data for its ring-based blood pressure monitor, CART, at the ESC Congress 2026 in Munich on September 7, showing an 80% data evaluability rate in continuous monitoring of atrial fibrillation (AFib) patients and high correlation with standard ambulatory blood pressure monitoring (ABPM) in severe heart failure cases.
CART achieves 80% evaluability rate in 24-hour monitoring of atrial fibrillation patients
Professor Ki-Hong Lee of Chonnam National University Hospital reported that CART's ring-based 24-hour monitoring achieved approximately 80% data evaluability in AFib patients, enabling continuous tracking of nocturnal blood pressure dipping patterns that irregular pulse rates typically disrupt for cuff-based devices.
Device meets ESH error margins in patients with severe heart failure
Professor In-Cheol Kim of Keimyung University Dongsan Hospital tested CART against conventional ABPM in heart failure patients with a mean ejection fraction of 29%, finding high concordance that fully satisfied European Society of Hypertension (ESH) permissible error criteria.
Seoul National University study confirms compliance with ESH cuffless device standards
Professor Hae-Young Lee of Seoul National University Hospital validated CART against ESH recommendations for cuffless devices, including the Static Test, Device Position Test, Awake/Asleep Test and Exercise Test.
Sleep apnea analysis links breathing resumption to sharp blood pressure spikes
Professor Jong-Chan Youn of Seoul St. Mary's Hospital analyzed more than 12,000 respiratory disturbance events across 62 sleep apnea patients using CART, identifying pronounced blood pressure increases immediately following resumption of breathing.
Professor Eun-Mi Lee of Dongguk University Ilsan Hospital cited a case where CART's precise blood pressure readings allowed a patient suffering cuff-related pain and stress to safely reduce medication dosage.
Professors say Sky Labs is among few firms meeting strict ESH validation criteria
Professors Seok-Min Kang of Severance Hospital and George Stergiou of the National and Kapodistrian University of Athens said Sky Labs is one of a small number of companies globally that consistently meet ESH validation standards for cuffless blood pressure devices.
CART logs 300,000 prescriptions across 2,000 Korean medical facilities
CART, which uses PPG sensors and deep learning for cuffless 24-hour blood pressure measurement via a smart ring, is deployed in more than 2,000 medical institutions in Korea and has recorded over 300,000 cumulative prescriptions. The device was included in the Korean Society of Hypertension's 2026 guidelines (6th edition), marking the first global inclusion of a ring-shaped cuffless blood pressure monitor in national clinical guidelines.
Sky Labs CEO Jack ByungHwan Lee said the ESC Congress data demonstrated CART's potential for managing complex cardiovascular conditions and that the company would accelerate expansion into Europe and global markets on the strength of its prescription volume and guideline inclusion.