IP Library › Granted Patent US 12690796

Granted Patent B2

US 12690796 · App. 18/013,599 · Granted Jul 28, 2026

Wearable ECG and EDA with multi-lead and single-lead connections

Inventors: Lindsey Michelle Sunden (San Francisco, CA); Jens Mitchell Nielsen (San Francisco, CA); Anthony Zahi Faranesh (Oakland, CA); Man-Chi Liu (San Francisco, CA); Jaclyn Leverett Wasson (Alameda, CA); Kyung Nim Noh (San Francisco, CA)

Assignee: FITBIT, INC.

A61B5/318 A61B5/282 A61B5/681 A61B5/6844 A61B5/742

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Quick Facts

Patent No.: US 12690796
App. No.: 18/013,599
Granted: Jul 28, 2026
Kind: B2

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Abstract

A wellness tracking device includes a plurality of electrodes to receive biometric data from a user. The electrodes may receive an input from the user and transmit information, such as electrical data related to the heart or skin conductance, in order to measurement one or more physical properties. The electrodes may be arranged within the form factor provided by the wellness tracking device and also electrically isolated to provide independent data acquisition for the electrodes. Arrangement of the electrodes may be particularly selected to provide an ergonomic arrangement to enable the user to comfortably provide input data.

Claims (65)

1 . A wearable computing device, comprising:

a housing including an upper portion and a lower portion, the upper portion and the lower portion being electrically isolated from one another, wherein the lower portion is configured to contact a first body part of a user while the wearable computing device is worn by the user;

a first electrode, provided in the lower portion, the first electrode being positioned to be in contact with the first body part while the wearable computing device is worn by the user;

a second electrode, provided in the upper portion, the second electrode being positioned out of contact from the first body part of the user when the wearable computing device is worn by the user, wherein the second electrode is configured to receive a contact from a second body part of the user;

a third electrode, provided in one of the upper portion and the lower portion, the third electrode being electrically isolated from both the first electrode and the second electrode;

one or more memory devices configured to store instructions; and

one or more processors configured to execute the instructions to perform operations, the operations comprising:

determining, based on first data output by the first electrode, a first contact formed between the first body part and the first electrode,

determining, based on the first data, whether the first contact formed between the first body part and the first electrode is sufficient based on whether the first contact is maintained more than a first threshold duration of time,

when the first threshold duration of time is not satisfied, providing a first output via a user interface instructing the user to adjust at least one of the first body part or the wearable computing device,

when the first threshold duration of time is satisfied, providing a second output via the user interface instructing the user to bring the second body part into contact with the second electrode,

determining, based on second data output by the second electrode, a second contact formed between the second body part and the second electrode,

determining, based on the second data, whether the second contact formed between the second body part and the second electrode is sufficient based on whether the second contact is maintained more than a second threshold duration of time,

when the second threshold duration of time is not satisfied, providing a third output via the user interface instructing the user to adjust at least one of the second body part or the wearable computing device,

when the second threshold duration of time is satisfied, providing a fourth output via the user interface instructing the user to maintain the first contact and the second contact,

acquiring, while the first contact and the second contact are maintained, the first data via the first electrode and the second data acquired via the second electrode,

when the first data and the second data are acquired while the first contact and the second contact are maintained for less than a third threshold duration of time, determining collection of the first data and the second data is incomplete, and

when the first data and the second data are acquired while the first contact and the second contact are maintained for more than the third threshold duration of time, evaluating the first data and the second data and outputting a biometric measurement based on the first data and the second data acquired while the first contact and the second contact were maintained for more than a third threshold duration of time.

2 . The wearable computing device of claim 1 , wherein the upper portion comprises:

a display screen configured to provide at least one of the first output or the second output; and

a bezel, wherein the bezel substantially surrounds a perimeter of the display screen, the bezel being electrically isolated from the display screen and the lower portion.

3 . The wearable computing device of claim 2 , wherein the second electrode and the third electrode are formed on the display screen, the display screen being visible through the second electrode and the third electrode.

4 . The wearable computing device of claim 2 , wherein the upper portion comprises:

a bezel extending around a perimeter of the upper portion, wherein both the second electrode and the third electrode are arranged within the bezel.

5 . The wearable computing device of claim 1 , wherein

the upper portion includes a display screen configured to provide at least one of the first output or the second output, and

the housing further includes a conductive ring disposed around the display screen, and the conductive ring includes the second electrode and the third electrode.

6 . The wearable computing device of claim 1 , further comprising at least one spacer positioned between each of the first electrode, the second electrode, and the third electrode, the spacer electrically isolating the first electrode, the second electrode, and the third electrode from one another.

7 . The wearable computing device of claim 1 , wherein the one or more processors are configured to provide at least one of the first output or the third output via the user interface via at least one of a textual message, an auditory sound, or tactile feedback.

8 . The wearable computing device of claim 1 , wherein the biometric measurement includes at least one of an electrocardiogram measurement or an electrodermal activity measurement.

9 . A method for obtaining a biometric measurement via a plurality of electrodes provided in a housing of a wearable computing device, the method comprising:

determining, based on first data output by a first electrode among the plurality of electrodes, a first contact formed between a first body part of a user and the first electrode, wherein the first electrode is provided in a lower portion of the housing and is positioned to be in contact with the first body part while the wearable computing device is worn by the user;

when the first threshold duration of time is satisfied, providing a second output via a user interface instructing the user to bring a second body part of the user into contact with a second electrode among the plurality of electrodes;

determining, based on second data output by the second electrode, a second contact formed between the second body part and the second electrode, wherein the second electrode is provided in an upper portion of the housing and is positioned out of contact from the first body part of the user when the wearable computing device is worn by the user, wherein the second electrode is configured to receive a contact from the second body part of the user and the upper portion and the lower portion of the housing are electrically isolated from one another;

when the second threshold duration of time is satisfied, providing a fourth output via the user interface instructing the user to maintain the first contact and the second contact,

acquiring, while the first contact and the second contact are maintained, the first data via the first electrode and the second data via the second electrode,

10 . The method of claim 9 , wherein the first body part includes a wrist of a first limb and the second body part includes a second limb.

11 . The method of claim 9 , comprising:

determining, based on third data output by a third electrode among the plurality of electrodes, a third contact formed between a third body part of the user and the third electrode, wherein the third electrode is provided in the upper portion of the housing and is positioned out of contact from the third body part of the user when the wearable computing device is worn by the user;

determining, based on the third data, whether the third contact formed between the third body part and the third electrode satisfies a fourth threshold duration of time;

when the fourth threshold duration of time is not satisfied, providing a fifth output via the user interface instructing the user to adjust at least one of the third body part or the wearable computing device;

when the fourth threshold duration of time is satisfied, providing a sixth output via the user interface instructing the user to bring the second body part of the user into contact with the second electrode;

determining, based on fourth data output by the second electrode, the second contact formed between the second body part and the second electrode while the third contact is maintained between the third body part and the third electrode; and

obtaining, while the third contact and the fourth contact are maintained, another biometric measurement based on the fourth data acquired via the second electrode and the third data acquired via the third electrode.

12 . The method of claim 11 , wherein the second body part includes a first finger on a first limb and the third body part includes a second finger on a second limb.

13 . The method of claim 11 , further comprising providing at least one spacer between each of the first electrode, the second electrode, and the third electrode, the spacer electrically isolating the first electrode, the second electrode, and the third electrode from one another.

14 . The method of claim 11 , further comprising providing the second electrode and the third electrode in a display screen of the wearable computing device.

15 . A non-transitory computer readable medium storing instructions which, when executed by a processor, cause the processor to perform operations for obtaining a biometric measurement via a plurality of electrodes provided in a housing of a wearable computing device, the operations comprising:

when the first threshold duration of time is satisfied, providing a second output via the user interface instructing the user to bring a second body part of the user into contact with a second electrode among the plurality of electrodes;

when the second threshold duration of time is satisfied, providing a fourth output via the user interface instructing the user to maintain the first contact and the second contact;

acquiring, while the first contact and the second contact are maintained, the first data via the first electrode and the second data via the second electrode;