Granted Patent B2

US 12,507,931 · App. 18/363,509 · Granted Dec 30, 2025

Inventors: Jeffrey Joseph Abercrombie, II (Oakland, CA); Genaro Sebastian Sepulveda (Oakland, CA); Shena Hae Park (San Francisco, CA); Ryan James Wensley (San Francisco, CA); James Kihyun Lee (San Francisco, CA); Thomas Burnell Reeve, III (San Francisco, CA)

Assignee: iRhythm Technologies, Inc.

A61B5/257A61B5/282A61B5/6833H05K1/147H05K5/0026H05K5/0086H05K5/0217H05K7/1427A61B5/325A61B5/6843A61B2090/0807A61B2562/0215A61B2562/0217A61B2562/166A61B2562/227

Abstract

Claims (31)

1 . A wearable device for monitoring physiological signals in a user, the wearable device comprising:

at least one battery, the at least one battery comprising a first terminal on a first side of the at least one battery and a second terminal on a second side of the at least one battery;

an electrode configured to detect physiological signals;

a circuit board configured to process the physiological signals;

a battery terminal connector comprising a conductive trace that is disposed on a non-conductive insulating layer; and

a resistor formed from a conductive material having a higher resistance than the conductive trace, wherein at least a portion of the resistor is connected to the conductive trace and the circuit board, and wherein at least a part of the resistor is external to the electrode and is disposed within a horizontal plane of the conductive trace and disposed on the conductive trace that is disposed on the non-conductive insulating layer.

2 . The wearable device of claim 1 , wherein the resistor has a resistance between 50-100 kiloohms.

3 . The wearable device of claim 1 , further comprising a substrate layer.

4 . The wearable device of claim 3 , wherein the resistor and the conductive trace are printed onto the substrate layer.

5 . A wearable device for monitoring physiological signals in a user, the wearable device comprising:

a housing comprising:

at least one battery, the at least one battery comprising a first terminal on a first side of the at least one battery and a second terminal on a second side of the at least one battery;

an electrode configured to detect physiological signals;

a circuit board configured to process the physiological signals; and

a resistor configured to send physiological signals to the circuit board, wherein the resistor is electrically connected between the circuit board and the electrode, wherein the resistor is positioned within a horizontal plane of a conductive trace that connect to the first terminal and is disposed on a non-conductive insulating layer, and wherein the resistor reduces current traveling along a conductive trace from a sensor to the circuit board to obtain a reduced current.

6 . The wearable device of claim 1 , wherein the portion of the resistor intersects the conductive trace.

7 . The wearable device of claim 1 , wherein the portion of the resistor is in-line with the conductive trace.

8 . The wearable device of claim 1 , wherein the resistor, the circuit board, and the at least one battery are disposed within a housing of the wearable device.

9 . The wearable device of claim 8 , wherein the resistor is external to the circuit board.

10 . The wearable device of claim 1 , wherein at least the part of the resistor disposed within the conductive trace substitutes for a resistor of the circuit board.

11 . The wearable device of claim 1 , wherein the electrode comprises a central aperture enabling moisture evaporation through a center of the electrode.

12 . The wearable device of claim 1 , wherein the conductive trace comprises a plurality of bends configured to absorb tensile or compressive strains along a longitudinal axis of the conductive trace.

13 . The wearable device of claim 1 , wherein a material of the resistor is selected to reduce 1/f noise.

14 . The wearable device of claim 5 , wherein the electrode comprises a central aperture enabling moisture evaporation through a center of the electrode.

15 . The wearable device of claim 14 , wherein the resistor is external to the circuit board.

16 . The wearable device of claim 14 , wherein the reduced current is configured as a safety feature for the user.

17 . The wearable device of claim 14 , wherein the wearable device further comprises:

a second electrode configured to detect physiological signals; and

a second resistor configured to send physiological signals from the second electrode to the circuit board.

18 . The wearable device of claim 14 , wherein the resistor is configured to reduce noise in the physiological signals.

19 . The wearable device of claim 14 , wherein the conductive trace comprises a plurality of bends configured to absorb tensile or compressive strains along a longitudinal axis of the conductive trace.

Assignments (2)

Continuity (5)

References Cited (400)