US 11,026,628 B1 · Systems and methods of spatial filtering for measuring electrical signals

Abstract

Disclosed herein are devices and methods of using a mobile or wearable device for the acquisition and spatial filtering of ECG signals from an electrode array. One variation of a mobile or wearable device comprises an array of electrodes, one or more reference electrodes, and a controller in communication with the electrodes. In one example, the one or more reference electrodes are located on a wrist-worn device (e.g., a watch), and the electrode array is located on an accessory device that may be contacted with a fingertip. One variation of a spatial filtering method comprises identifying the electrodes that have high levels of noise and excluding the ECG signals from those electrodes from further analyses. In another variation, a method of spatial filtering comprises identifying electrodes with low levels of noise and including only the ECG signals from those electrodes in further analyses.

Claims19

Dependent claims

A device comprising:

multiple measurement electrodes configured to contact multiple areas of a skin surface and to measure a plurality of signals, each measurement electrode being independently measurable and configured to measure a signal of the plurality of signals of a user;
and
a controller configured to:
receive the plurality of signals,
compare each signal of the plurality of signals to a noise threshold derived from the plurality of signals from the multiple measurement electrodes,
reject or apply a first weighting factor to each signal having a level greater than or equal to the noise threshold,
perform one or more of accepting and applying a second weighting factor to each signal having a level less than the noise threshold, and
determine one or more physiological parameters from at least one or both of the accepted signals and the signals with the applied second weighting factor.

5 more elements

A method comprising:

contacting multiple areas of a skin surface of a user with multiple measurement electrodes;
measuring a plurality of electrical signals from the user with the multiple measurement electrodes;
generating a plurality measurement signals indicative of the measured plurality of electrical signals;
transmitting the plurality of measurement signals using wireless communication channels to a controller,
the controller configured to:
receive the plurality of measurement signals,
compare each of the plurality of measurement signals to a noise threshold that is derived from the plurality of measurement signals from the multiple measurement electrodes;
reject or apply a first weighting factor to each of the plurality of measurement signals having a level greater than or equal to the noise threshold,
perform one or more of accepting and applying a second weighting factor to each of the plurality of measurement signals having a level less than the noise threshold;
and
determining one or more physiological parameters from the at least one or both of the accepted signals and the signals less than the noise threshold.

8 more elements

Dependencies are inferred from the claim text.

Systems and methods of spatial filtering for measuring electrical signals

Life of this patent

Systems and methods of spatial filtering for measuring electrical signals

Life of this patent

Abstract

Claims19