Sky Labs’ CART ring has secured UK medical approval, pushing blood pressure monitoring toward a quieter, more wearable future.
You know the feeling. The cuff tightens around your arm until it becomes mildly unbearable, you sit still for a few seconds and then a number appears – a tiny snapshot supposedly summarizing the state of your cardiovascular health. It is one of medicine’s most familiar rituals and, for decades, it has barely changed. Now, the blood pressure cuff has had a remarkably long run.
South Korean health tech company Sky Labs announced that its ring-type blood pressure monitoring platform, CART PLATFORM, has officially received medical device registration and marketing authorization from the UK’s Medicines and Healthcare products Regulatory Agency (MHRA), following CE-MDR certification in Europe earlier this year [1].
Healthcare is moving away from bulky, occasional measurements toward continuous monitoring that slips almost invisibly into everyday life.
A ring instead of a cuff
The idea behind CART is surprisingly simple to explain, even if the engineering underneath it is not. Instead of wrapping a cuff around the upper arm to squeeze blood vessels and calculate pressure, CART uses sensors embedded inside a ring to monitor cardiovascular signals throughout the day. The platform combines the wearable ring with a mobile app, a physician dashboard and a cloud-based monitoring system. It is trying to turn blood pressure monitoring from an event into a background process.
Most people do not walk around thinking about their blood pressure unless a doctor tells them to. Even then, monitoring can feel inconvenient enough that many simply stop doing it consistently. Traditional cuffs are useful, but they also interrupt daily life. You have to sit down, position the device correctly and pause whatever you are doing.
A ring changes the psychology of that entirely. It behaves less like medical equipment and more like something you forget you are wearing. That may ultimately be the real innovation here.
Why continuous data changes the picture
Blood pressure is not static. It rises when you are stressed, drops during sleep, changes after exercise and fluctuates depending on medication, hydration and even anxiety during a doctor’s visit.
A single reading can sometimes tell an incomplete story, a little like judging an entire movie from one frame. This is why the healthcare industry has become increasingly interested in continuous monitoring. More data points collected over time can reveal patterns that occasional measurements miss. For physicians, that can mean better visibility into cardiovascular risk. For patients, it can make health tracking feel less reactive and more preventative.
That sits squarely within the broader longevity movement, which is more focused on early detection and long-term health optimization. The future of longevity may be about systems that help people catch problems earlier, monitor chronic conditions more naturally and stay engaged with their health over decades instead of emergencies.
The bigger significance of UK approval
What makes Sky Labs’ announcement notable is not just the product itself, but the fact that regulators are increasingly willing to treat wearable devices as legitimate clinical tools rather than wellness accessories.
The company describes CART BP Pro as the world’s only cuffless ring-type blood pressure monitor to receive this level of regulatory recognition internationally. That matters because healthcare systems tend to move cautiously, especially when it comes to cardiovascular data. Regulators are not approving a sleek gadget aesthetic; they are evaluating whether the device can operate reliably enough to be used in medical settings.
“In a system centered on cuff-type blood pressure monitors that has been maintained for hundreds of years, the fact that the world’s only cuffless ring-type blood pressure monitor has received medical device authorization from international regulatory agencies proves that Sky Labs’ technology and clinical maturity have been recognized by global standards,” Jack Byunghwan Lee, CEO of Sky Labs, said.
He further noted that the situation demonstrated the emergence of a new paradigm in blood pressure management, one that effectively balances clinical efficiency for medical professionals with increased convenience for patients.
There is a broader industry trend underneath those comments. Wearables are evolving beyond fitness culture. Smart rings and watches were once primarily associated with sleep scores, step counts and wellness optimization for consumers. Increasingly, they are moving into territory traditionally reserved for clinical devices.
The line between consumer technology and healthcare infrastructure is beginning to blur.
From wellness gadget to healthcare infrastructure
Sky Labs has already built traction in South Korea, where CART BP Pro has been integrated into around 1,800 hospitals and clinics since receiving reimbursement approval in 2024.
The reimbursement detail is easy to overlook, but it may be one of the strongest signals of all. In healthcare, adoption does not happen simply because technology exists. Hospitals, insurers and physicians all need to see practical value before a device becomes embedded into routine care.
Now, with both European certification and UK approval secured, Sky Labs appears to be positioning CART for a larger international push through pharmacies, clinics and hospitals.
The deeper story here is not really about a ring but about healthcare becoming more ambient and more integrated into daily life.
Photograph courtesy of Sky Labs
[1] https://www.mt.co.kr/thebio/2026/05/15/2026051510064525052