Smart Ring Aims to Replace the 150-Year-Old Blood Pressure Cuff(www.bloomberg.com)

2 pointsby brandonb5 hours ago1 comment

sleepyguy4 hours ago
Bloomberg links should be banned.
An explanation of it's features.
https://signalring.com/pages/how-it-works
- gus_massa3 hours ago
  Is there any technical detail? I don't understand how it works without cuffs or calibration.
  - brandonb3 hours ago
    Likely uses pulse transit time and the shape of the pulse wave to infer changes in blood pressure. I wrote a bit about how this works (in the context of Apple Watch's hypertension notifications) here: https://www.empirical.health/blog/apple-watch-blood-pressure...
    gus_massa3 minutes ago
    I took a look at your link ...
    It measure blood speed instead of pressure?
    How does it transform blood speed to pressure? Doesn't it require a different calibration for each person? Your article says something about deep learning, but IIUC it's to detect unusual peaks in one person.