Sky Labs has launched the world’s first (supposed) ward-specific blood pressure monitoring solution that uses a ring to automatically measure and manage patients’ blood pressure.

The introduction of CART ON expands Sky Labs’ business scope beyond the existing outpatient and consumer markets into inpatient ward monitoring. With the addition of the ward-specific solution to its certified medical devices—CART BP Pro for outpatient clinical use and CART BP for general consumers—the company now offers a complete product lineup that supports blood pressure measurement across all settings, from everyday use to hospital wards.

The CART ON solution is optimized for enhancing convenience in medical settings by streamlining cumbersome measurement procedures. When medical staff prescribe a ring-type monitor instead of a conventional cuff-type device for patients needing 24-hour ambulatory blood pressure monitoring (ABPM), the device’s built-in photoplethysmography (PPG) sensor automatically measures the patient’s blood pressure and collects relevant data.

The collected data is linked with Seers Technology’s inpatient monitoring platform, “thynC,” and is automatically transmitted to and recorded in the nurse station dashboard and the hospital’s electronic medical record (EMR) system. Currently, Daewoong Pharmaceutical, a South Korean pharmaceutical company, holds the exclusive domestic sales rights for this solution and will supply it to hospital distribution networks nationwide.

Sky Labs has secured global-level technical and clinical reliability by conducting comparative clinical trials with existing standard methods—including Auscultation, a cuff-based 24-hour ABPM, and Invasive Arterial Line (A-line)—to prove the ring-type blood pressure monitor’s clinical validity when applied to CART ON. Notably, through comparative trials with the A-line, considered the gold standard of blood pressure measurement, the company proved that precise monitoring is possible even in situations with high blood pressure fluctuations.

The solution’s debut is expected to further enhance medical staffs’ work efficiency in wards. For nursing, it reduces potential errors that may occur during manual entry and simplifies recording and reporting tasks, helping nurses focus on their core professional duties, such as medication and fluid management. Doctors can also improve diagnostic accuracy and the appropriateness of drug prescriptions based on objective data measured periodically.

The physical discomfort experienced by patients is also expected to improve. Since there is no pressure from tightening the arm or mechanical noise, the sleep disturbance issues caused by conventional cuff-type blood pressure monitors can be minimized. In addition, measurement is possible without any separate restrictions even when the patient is moving or active within the hospital, allowing clinicians to easily collect 24-hour blood pressure fluctuation data.

“CART ON is a solution that improves the efficiency of managing hypertensive patients in wards through clinically proven technology,” Sky Labs CEO Jack Byunghwan Lee said. “We will continue to advance vital signal monitoring technologies, including blood pressure, to contribute to the establishment of a smart ward environment that simultaneously enhances work efficiency for medical staff and convenience for patients.”

Founded in September 2015, Sky Labs develops and operates CART, a ring-type medical device and platform for monitoring chronic disease patients. Since the first CART was developed in 2020 for atrial fibrillation monitoring using cardiac signals from optical sensors, the company has expanded its capabilities. In 2023, Sky Labs received medical device approval for CART BP pro, a ring-type monitor designed for 24-hour blood pressure measurement. In 2024, CART BP pro was recognized by the Health Insurance Review and Assessment Service (HIRA) under the existing medical procedure of “24-hour ambulatory blood pressure monitoring” (reimbursement code E6547), and is currently being prescribed in Korean hospitals and clinics. In September 2025, the company launched CART BP, a consumer-grade ring-type blood pressure monitor, which is available through its official online store and various other online channels.