# US 10,478,082 B2 · Film-type biomedical signal measuring apparatus, blood pressure measuring apparatus using the same, cardiopulmonary fitness estimating apparatus, and personal authentication apparatus

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- Number: US 10,478,082 B2
- Document ID: US10478082B2
- Status: Granted
- Kind: B2
- Application number: 14/779,570
- Filed: 2014-03-24
- Published: 2016-02-25
- Granted: 2019-11-19
- Earliest claimed: 2013-03-24
- Assignees: Seoul National University R&Db Foundation
- Applicants: Seoul National University R&Db Foundation
- Inventors: Hee Chan Kim; Seung Woo Noh; Chi Yul Yoon
- Web page: https://patentgrep.com/patent/US10478082B2

## CPC

- A61B 5/021: Measuring pressure in heart or blood vessels
- A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
- A61B 5/02133: {by using induced vibration of the blood vessel}
- A61B 5/1102: {Ballistocardiography}
- A61B 5/117: Identification of persons (methods or arrangements for recognising patterns, e.g. fingerprints, G06F18/00, G06V40/00; identification of persons by analysing their voice or speech G10L17/00)
- A61B 5/257: using adhesive means, e.g. adhesive pads or tapes
- A61B 5/263: characterised by the electrode materials
- A61B 5/28: for electrocardiography [ECG]
- A61B 5/282: Holders for multiple electrodes (for introduction into the body A61B5/287)
- A61B 5/4866: {Evaluating metabolism (using breath test A61B5/083)}
- A61B 5/02438: {with portable devices, e.g. worn by the patient}
- A61B 5/0816: {Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00)}
- A61B 5/1118: {Determining activity level}
- A61B 5/352: Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
- A61B 5/7278: {Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals}
- A61B 2562/0219: Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
- A61B 2562/164: the sensor is mounted in or on a conformable substrate or carrier
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.

## Claims

### Claim 1

A film-type biomedical signal measuring apparatus comprising:
a film-type piezoelectric element;
a plurality of metallic thin film electrodes formed on the piezoelectric element;
a first circuit unit for measuring a biomedical evoked potential from at least two of the plurality of metallic thin film electrodes; and
a second circuit unit for measuring a biomedical evoked vibration signal from at least two of the plurality of metallic thin film electrodes,
wherein the plurality of metallic thin film electrodes comprises two or more first metallic thin film electrodes formed on an attachment surface of the piezoelectric element so as not to be electrically connected to each other, and a second metallic thin film electrode formed on an opposite surface of the piezoelectric element,
wherein the first circuit unit is formed on the opposite surface of the piezoelectric element so as to be electrically connected to at least two first metallic thin film electrode among the first metallic thin film electrodes, and
wherein the second circuit unit is formed on the opposite surface of the piezoelectric element so as to be electrically connected to at least one first metallic thin film electrode among the first metallic thin film electrodes and the second metallic thin film electrode.

### Claim 2 (depends on 1)

The film-type biomedical signal measuring apparatus of claim 1, wherein
the first circuit unit measures an ECG signal from the measured biomedical evoked potential, and
the second circuit unit measures a ballistocardiogram (BCG) signal from the measured biomedical evoked vibration signal.

### Claim 3

A film-type biomedical signal measuring apparatus comprising:
a film-type piezoelectric element;
a plurality of metallic thin film electrodes formed on the piezoelectric element;
a first circuit unit for measuring a biomedical evoked potential from at least two of the plurality of metallic thin film electrodes; and
a second circuit unit for measuring a biomedical evoked vibration signal from at least two of the plurality of metallic thin film electrodes,
wherein the plurality of metallic thin film electrodes comprises at least two first metallic thin film electrode formed on an attachment surface of the piezoelectric element so as not to be electrically connected to each other, and a second metallic thin film electrode formed on an opposite surface of the piezoelectric element,
wherein the film-type biomedical signal measuring apparatus further comprises a film-type substrate with an adhesion surface adhered to the opposite surface of the piezoelectric element,
wherein a third metallic thin film electrode electrically connected to at least one first metallic thin film electrode among the first metallic thin film electrodes is formed on a formation surface of the film-type substrate,
wherein the first circuit unit is formed on the formation surface of the film-type substrate so as to be electrically connected to at least two first metallic thin film electrodes among the first metallic thin film electrodes, and
wherein the second circuit unit is formed on the formation surface of the film-type substrate so as to be electrically connected to the second metallic thin film electrode and the third metallic thin film electrode.

### Claim 4 (depends on 3)

The film-type biomedical signal measuring apparatus of claim 3, wherein the first circuit unit is electrically connected to the third metallic thin film electrode and measures a potential difference between the remaining first metallic thin film electrodes using the any one first metallic thin film electrode as a reference electrode to measure an electrocardiogram (ECG) signal.

### Claim 5 (depends on 3)

The film-type biomedical signal measuring apparatus of claim 3, further comprising an adhesive member disposed on any one of surfaces of the piezoelectric element or disposed to surround the piezoelectric element and the film-type substrate to allow any one of the piezoelectric element to be easily attached to a skin.

### Claim 6 (depends on 3)

The film-type biomedical signal measuring apparatus of claim 3, wherein
the first circuit unit measures an ECG signal from the measured biomedical evoked potential, and
the second circuit unit measures a ballistocardiogram (BCG) signal from the measured biomedical evoked vibration signal.

### Claim 7

A film-type biomedical signal measuring apparatus comprising:
a film-type piezoelectric element;
a plurality of metallic thin film electrodes formed on the piezoelectric element;
a first circuit unit for measuring a biomedical evoked potential from at least two of the plurality of metallic thin film electrodes; and
a second circuit unit for measuring a biomedical evoked vibration signal from at least two of the plurality of metallic thin film electrodes,
wherein the plurality of metallic thin film electrodes comprise at least two first metallic thin film electrodes formed on an attachment surface of the piezoelectric element so as not to be electrically connected to each other, and a second metallic thin film electrode formed on an opposite surface of the piezoelectric element,
wherein the film-type biomedical signal measuring apparatus further comprises a film-type substrate with an adhesion surface adhered to the opposite surface of the piezoelectric element,
wherein a third metallic thin film electrode is formed on a formation surface of the film-type substrate so as to be electrically connected to any one of the first metallic thin film electrodes,
wherein the first circuit unit is formed on the formation surface of the film-type substrate so as to be electrically connected to remaining first metallic thin film electrodes except for the any one first metallic thin film electrode, and
wherein the second circuit unit is formed on the formation surface of the film-type substrate so as to be electrically connected to the second metallic thin film electrode and the third metallic thin film electrode.

### Claim 8 (depends on 7)

The film-type biomedical signal measuring apparatus of claim 7, wherein the first circuit unit is electrically connected to the third metallic thin film electrode and measures a potential difference between the remaining first metallic thin film electrodes using the any one first metallic thin film electrode as a reference electrode to measure an electrocardiogram (ECG) signal.

### Claim 9 (depends on 7)

The film-type biomedical signal measuring apparatus of claim 7, further comprising an adhesive member disposed on any one of surfaces of the piezoelectric element or disposed to surround the piezoelectric element and the film-type substrate to allow any one of the piezoelectric element to be easily attached to a skin.

### Claim 10 (depends on 7)

The film-type biomedical signal measuring apparatus of claim 7, wherein
the first circuit unit measures an ECG signal from the measured biomedical evoked potential, and
the second circuit unit measures a ballistocardiogram (BCG) signal from the measured biomedical evoked vibration signal.