# US 2018/0020937 A1 · Wearable electrocardiographic measurement device

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- Number: US 2018/0020937 A1
- Document ID: US20180020937A1
- Status: Published application
- Kind: A1
- Application number: 15/546,281
- Filed: 2016-01-25
- Published: 2018-01-25
- Earliest claimed: 2015-01-26
- Inventors: Chang-An Chou
- Web page: https://patentgrep.com/patent/US20180020937A1

## CPC

- A61B 5/282: Holders for multiple electrodes (for introduction into the body A61B5/287)
- A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
- A61B 5/256: Wearable electrodes, e.g. having straps or bands
- A61B 5/291: for electroencephalography [EEG]
- A61B 5/4806: {Sleep evaluation (A61B5/4821 takes precedence; devices for inducing sleep A61M21/02)}
- A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles}
- A61B 5/681: {Wristwatch-type devices}
- A61B 5/02125: {of pulse wave propagation time}
- A61B 5/6815: {Ear}
- A61B 5/6824: {Arm or wrist}
- A61B 5/6826: {Finger}
- A61B 5/7278: {Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

The present invention discloses wearable electrocardiographic measurement device which includes a first electrode and a second electrode, wherein the first electrode is mounted on a user's body via a wearable structure, and the second electrode is implemented to contact the user's upper limb, neck or shoulder, so as to achieve a loop for acquiring electrocardiographic signals.

## Claims

### Claim 1

A wearable electrocardiographic measurement device, comprising:
a circuitry, comprising a processor;
an ear-worn structure, mounted on an ear of a user;
a first electrode and a second electrode, wherein the first electrode is located on a surface of the ear-worn structure which contacts the skin of the ear or around the ear while the device is mounted on the ear, and another surface of the ear-worn structure which doesn't contact the skin of the ear or around the ear comprises the second electrode mounted thereon; and
an information providing unit,
wherein
when performing an electrocardiographic measurement, the user wears the ear-worn structure on the ear to contact the first electrode with the skin of the user or around the ear and uses one hand to contact the second electrode, thereby achieving a loop for acquiring electrocardiographic signals.

### Claim 2 (depends on 1)

The device as claimed in claim 1, wherein the ear-worn structure is one selected from a group consisting of: ear clamp, ear plug, and ear hook.

### Claim 3 (depends on 1)

The device as claimed in claim 1, further comprising plural electroencephalographic electrodes, configured to contact the skin of the ear or around the ear via the ear-worn structure, so as to acquire electroencephalographic signals.

### Claim 4

(canceled)

### Claim 5 (depends on 1)

The device as claimed in claim 1, wherein the processor is configured to perform an analysis of the electrocardiographic signals for obtaining a time sequence of heart beats, and compare the time sequence of heart beats with an arrhythmia time sequence characteristic, so as to determine an arrhythmia event.

### Claim 6 (depends on 1)

The device as claimed in claim 1, further comprising a transmission module, and the information providing unit is configured to transmit information to an external device via the transmission module, so as to provide the information to the user via the external device.

### Claim 7 (depends on 1)

The device as claimed in claim 1, further comprising an optical sensor, positioned on the ear or around the ear together with the first electrode via the ear-worn structure, for detecting consecutive pulse variations of the user, and the processor is configured to obtain a time sequence of heart beats based on the consecutive pulse variations.

### Claim 8

(canceled)

### Claim 9 (depends on 7)

The device as claimed in claim 7, wherein the processor is configured to compare the time sequence of heart beats with an arrhythmia time sequence characteristic, so as to determine a possible arrhythmia event, and when the possible arrhythmia event is determined, the processor generates a notification for informing the user the occurrence of possible arrhythmia event via the information providing unit, thereby notifying the user to perform the electrocardiographic measurement; and/or the processor is configured to perform a HRV analysis of the time sequence, so as to obtain the information of autonomic nervous system (ANS) activity; and/or the processor is configured to perform an analysis for obtaining respiratory sinus arrhythmia (RSA) information, and based on the RSA information, the processor generates a breathing guiding signal which is provided to the user via the information providing unit in a breathing training section.

### Claim at position 10

10-12. (canceled)

### Claim 13 (depends on 7)

The device as claimed in claim 7, wherein the processor is configured to obtain a pulse transit time (PTT) based on the consecutive pulse variations and the electrocardiographic signals, so as to calculate referential values of blood pressure.

### Claim 14

A wearable electrocardiographic measurement device, comprising:
a circuitry, comprising a processor;
a finger-worn structure, mounted on a finger of a user;
a first electrode and a second electrode, wherein the first electrode is located on a surface of the finger-worn structure which contacts the finger while the device is mounted on the finger, and another surface of the finger-worn structure which doesn't contact the finger comprises the second electrode mounted thereon; and
an information providing unit,
wherein
when performing an electrocardiographic measurement, the user wears the finger-worn structure on the finger to contact the first electrode with the skin thereof and contacts the second electrode with a body portion other than the limb of the finger, thereby achieving a loop for acquiring electrocardiographic signals.

### Claim 15 (depends on 14)

The device as claimed in claim 14, further comprising a housing for accommodating at least a portion of the circuitry, wherein the housing is configured to connect with the finger-worn structure via a pair of connectors, and is further positioned on a wrist of another upper limb via a wrist-worn structure.

### Claim 16 (depends on 14)

The device as claimed in claim 14, wherein the processor is configured to perform an analysis of the electrocardiographic signals for obtaining a time sequence of heart beats, and compare the time sequence of heart beats with an arrhythmia time sequence characteristic, so as to determine an arrhythmia event.

### Claim 17 (depends on 14)

The device as claimed in claim 14, further comprising a transmission module, and the information providing unit is configured to transmit information to an external device via the transmission module, so as to provide the information to the user via the external device.

### Claim 18 (depends on 14)

The device as claimed in claim 14, further comprising an optical sensor, positioned on the finger together with the first electrode via the finger-worn structure, for detecting consecutive pulse variations of the user, and the processor is configured to obtain a time sequence of heart beats based on the consecutive pulse variations.

### Claim 19

(canceled)

### Claim 20 (depends on 18)

The device as claimed in claim 18, wherein the processor is configured to compare the time sequence of heart beats with an arrhythmia time sequence characteristic, so as to determine a possible arrhythmia event, and when the possible arrhythmia event is determined, the processor generates a notification for informing the user the occurrence of possible arrhythmia event via the information providing unit, thereby notifying the user to perform the electrocardiographic measurement and/or the processor is configured to perform a HRV analysis of the time sequence, so as to obtain the information of autonomic nervous system (ANS) activity; and/or the processor is configured to perform an analysis for obtaining respiratory sinus arrhythmia (RSA) information, and based on the RSA information, the processor generates a breathing guiding signal which is provided to the user via the information providing unit in a breathing training section.

### Claim at position 19

21-23. (canceled)

### Claim 24 (depends on 18)

The device as claimed in claim 18, wherein the processor is configured to obtain a pulse transmit time (PTT) based on the consecutive pulse variations and the electrocardiographic signals, so as to calculate referential values of blood pressure.

### Claim at position 21

25-56. (canceled)