Comprehensive wearable vital signs monitor

Patent metadata

Field	Value
Publication number	US-12419527-B2
Application number	US-202217946582-A
Country	US
Kind code	B2
Filing date	Sep 16, 2022
Priority date	Sep 29, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A finger wearable device for monitoring vital signs at a finger includes a housing, a finger cuff, a plurality of vital sign sensors, and an electrocardiogram (ECG) sensor. The housing includes an interface surface for pressing against the finger. The finger cuff attaches to the housing and has a size and a shape to secure the housing to the finger and force the interface surface against the finger when the finger cuff is worn around the finger. The vital sign sensors are disposed in or on the housing and orientated to measure the vital signs from the finger of a wearer. The ECG sensor is disposed in or on the housing and coupled to first and second electrodes to measure ECG signals. The second electrode is disposed on the interface surface.

First claim

What is claimed is:

1. A wearable device for monitoring vital signs at an extremity, the wearable device comprising:
a housing including an interface surface for pressing against the extremity;
a cuff attached to the housing and having a size and a shape to secure the housing to the extremity and force the interface surface against the extremity when the cuff is worn around the extremity;
a plurality of vital sign sensors disposed in or on the housing and orientated to measure the vital signs from the extremity of a wearer of the wearable device; and
an electrocardiogram (ECG) sensor disposed in or on the housing and coupled to first and second electrodes to measure ECG signals, wherein the second electrode is disposed on the interface surface,
wherein the first electrode is disposed on a second surface of the housing different from the interface surface,
wherein the second surface is opposite the interface surface,
wherein the second electrode is subdivided into a first sub-electrode and a second sub-electrode for common mode rejection of electrical interference while measuring the ECG signals, wherein the first and second sub-electrodes are disposed on the interface surface and electrically insulated from each other.

2. The wearable device of claim 1 , wherein the wearable device comprises a finger wearable device, the extremity comprises a finger, and the cuff comprises a finger cuff.

3. The wearable device of claim 2 , further comprises:
a third electrode disposed on the finger cuff and coupled to the ECG sensor disposed within the housing.

4. The wearable device of claim 3 , wherein the ECG sensor is configured to acquire 6-lead ECG readings of the wearer from the first, second, and third electrodes.

5. The wearable device of claim 3 , wherein the finger comprises a first hand finger of the wearer and wherein the third electrode is positioned on the finger cuff such that the third electrode is pressable against a lower limb of the wearer while the first electrode is exposed for touching by a second hand finger of the wearer and the second electrode is pressed against the first hand finger.

6. The wearable device of claim 2 , wherein the first and second sub-electrodes are disposed adjacent to each other on the interface surface.

7. The wearable device of claim 2 , further comprising:
a controller disposed in or on the housing and coupled to the vital sign sensors and to the ECG sensor, the controller including logic that when executed by the controller causes the wearable device to perform operations including:
measuring the vital sign signals from the vital sign sensors from which four or more of the vital signs of the user are determinable; and
generating a log of the four or more vital signs.

8. A wearable device for monitoring vital signs at an extremity, the wearable device comprising:
a housing including an interface surface for pressing against the extremity;
a cuff attached to the housing and having a size and a shape to secure the housing to the extremity and force the interface surface against the extremity when the cuff is worn around the extremity;
a plurality of vital sign sensors disposed in or on the housing and orientated to measure the vital signs from the extremity of a wearer of the wearable device; and
an electrocardiogram (ECG) sensor disposed in or on the housing and coupled to first and second electrodes to measure ECG signals, wherein the second electrode is disposed on the interface surface,
wherein the vital sign sensors include:
a photoplethysmogram (PPG) sensor disposed to measure an oxygen saturation level, a pulse rate, and a respiratory rate from the extremity via the interface surface;
a blood pressure sensor disposed to measure a blood pressure of the wearer from the extremity via the interface surface; and
a temperature sensor configured to measure a core body temperature of the wearer.

9. The wearable device of claim 8 , wherein the PPG sensor and the second electrode are peripherally disposed on the interface surface about a blood pressure sensing area for measuring the blood pressure.

10. The wearable device of claim 2 , wherein the vital sign sensors include a temperature sensor disposed on a side of the housing and oriented for pointing at or pressing against a body part other than the finger while the wearable device is worn on the finger.

11. The wearable device of claim 10 , wherein the temperature sensor comprises a core temperature sensor and is disposed in a protrusion extending from the side of the housing, wherein the protrusion is sized to place into an ear for aligning the core temperature sensor to an ear canal of the wearer.

12. The wearable device of claim 11 , wherein the core temperature sensor comprises one or both of:
a pointable infrared sensor that is pointed from a distal end of the protrusion; or
a ring-shaped thermocouple that encircles the distal end of the protrusion.

13. The wearable device of claim 1 , further comprising:
an actuator adapted to force the interface surface against the extremity; and
a controller coupled to the actuator to dynamically control the actuator.

14. A finger wearable device, comprising:
a housing;
a finger cuff attached to the housing and adapted to force the housing against a finger of a first hand of a wearer of the finger wearable device;
a plurality of vital sign sensors disposed in or on the housing and orientated to measure vital signs from the finger; and
an electrocardiogram (ECG) sensor disposed in or on the housing and coupled to first, second, and third electrodes to measure ECG signals, wherein the first and second electrodes are disposed on the housing with the second electrode positioned to contact the finger when the finger cuff is worn around the finger and the third electrode is disposed on the finger cuff and positioned for contacting a lower limb of the wearer while the first electrode is reachable by a second hand of the wearer.

15. The finger wearable device of claim 14 , further comprising:
a controller disposed in or on the housing and coupled to the vital sign sensors and to the ECG sensor, the controller including logic that when executed by the controller causes the finger wearable device to perform operations including:
measuring vital sign signals from the vital sign sensors from which four or more vital signs of the wearer are determinable; and
generating a log of the four or more vital signs.

16. The finger wearable device of claim 15 , wherein the vital sign sensors include:
a photoplethysmogram (PPG) sensor disposed to measure an oxygen saturation level and a pulse rate via the finger;
a blood pressure sensor disposed to measure a blood pressure of the wearer from the finger; and
a temperature sensor configured to measure a core body temperature of the wearer.

17. The finger wearable device of claim 16 , wherein the PPG sensor and the second electrode are peripherally disposed on an interface surface of the housing about an active area for measuring the blood pressure at the finger.

18. The finger wearable device of claim 14 , wherein the vital sign sensors include a temperature sensor disposed on a side of the housing and oriented for pointing at a body part while the finger wearable device is worn on the finger.

19. The finger wearable device of claim 18 , wherein the temperature sensor comprises a core temperature sensor and is disposed in a protrusion extending from the side of the housing, wherein the protrusion is sized to place into an ear for aligning the co

Assignees

• Verily Life Sciences Llc

Inventors

• He David

Classifications

• A61B5/6828

  Leg · CPC title

• A61B2562/0271

  Thermal or temperature sensors · CPC title

• A61B5/0816

  Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00) · CPC title

• A61B5/02416

  using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence) · CPC title

• A61B5/021

  Measuring pressure in heart or blood vessels · CPC title