×

Photoplethysmographic device for measuring a heart rhythm

  • US 9,826,912 B2
  • Filed: 10/19/2016
  • Issued: 11/28/2017
  • Est. Priority Date: 11/11/2015
  • Status: Active Grant
First Claim
Patent Images

1. Photoplethysmographic device for measuring a heart rhythm, comprising a housing having a contacting surface and a control unit;

  • a photoplethysmographic sensor mechanically mounted to the contacting surface and connected to the control unit, wherein the control unit is arranged to receive a photoplethysmographic signal from the photoplethysmographic sensor, wherein the control unit is arranged for determining a heart rhythm from the photoplethysmographic signal;

    a fastening band having a first end and a second end, the first end and second end attached to the device for attaching the device to a subject with the contacting surface contacting the subject'"'"'s skin;

    a pressure sensor mounted to the contacting surface in close proximity to the photoplethysmographic sensor;

    wherein the control unit is arranged for determining whether the pressure from the pressure sensor is in a range suitable for photoplethysmographic measurement by the photoplethysmographic sensor, wherein the control unit is arranged for;

    determining a reliability factor for the PPG measurements from the pressure signal; and

    determining a heart rhythm using an actual photoplethysmographic measurement and a running history of measurements of the photoplethysmographic signal; and

    wherein a measurement of the photoplethysmographic signal is saved in the running history when the reliability factor is higher than a threshold.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×