WO2022137315A1 - 生体信号検出用電極 - Google Patents
生体信号検出用電極 Download PDFInfo
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- WO2022137315A1 WO2022137315A1 PCT/JP2020/047824 JP2020047824W WO2022137315A1 WO 2022137315 A1 WO2022137315 A1 WO 2022137315A1 JP 2020047824 W JP2020047824 W JP 2020047824W WO 2022137315 A1 WO2022137315 A1 WO 2022137315A1
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- WIPO (PCT)
- Prior art keywords
- electrode
- signal detection
- biological signal
- base material
- insulating base
- Prior art date
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 29
- 108010025899 gelatin film Proteins 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims abstract description 8
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 15
- 238000009413 insulation Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000017 hydrogel Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- GTKRFUAGOKINCA-UHFFFAOYSA-M chlorosilver;silver Chemical compound [Ag].[Ag]Cl GTKRFUAGOKINCA-UHFFFAOYSA-M 0.000 description 1
- 230000003183 myoelectrical effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/257—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/257—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes
- A61B5/259—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes using conductive adhesive means, e.g. gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/263—Bioelectric electrodes therefor characterised by the electrode materials
- A61B5/265—Bioelectric electrodes therefor characterised by the electrode materials containing silver or silver chloride
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/263—Bioelectric electrodes therefor characterised by the electrode materials
- A61B5/266—Bioelectric electrodes therefor characterised by the electrode materials containing electrolytes, conductive gels or pastes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
Definitions
- the present invention relates to an electrode for detecting a biological signal that detects a biological signal such as an electrocardiographic signal, a myoelectric signal, or an electroencephalogram.
- detection electrode This type of electrode for detecting biological signals (hereinafter, may be simply referred to as “detection electrode”) is in the form of an adhesive plaster and is also called a patch, and is used by being attached to the skin surface of a living body (human body). An example thereof will be described with reference to FIG. 2 (see Patent Documents 1 and 2 as a similar example).
- FIG. 2 shows the detection electrode 100 and the sensor substrate 200 detachably attached to the detection electrode 100 in a separated state.
- the sensor substrate 200 includes a pair of conductive magnets 210 as removable connectors to the detection electrode 100, and transmits the biological signal detected by the detection electrode 100 to a biological signal measuring device or the like (not shown) wirelessly or by wire.
- the detection electrode 100 includes an insulating base material 110 that is electrically insulating and is made of, for example, a silicone-based tape material.
- the insulating base material 110 is provided with a pair of electrode terminals 120 at predetermined intervals.
- the electrode terminal 120 is made of an Au-plated iron plate, and is formed in a dish shape into which the conductive magnet 210 of the sensor substrate 200 is fitted.
- the electrode terminal 120 is provided so as to penetrate the insulating base material 110 so as to be in contact with the skin surface of the living body, and the signal detection surface side (lower surface side in FIG. 2) of each electrode terminal 120 is made of an electrolytic substance.
- a conductive gel film 130 is provided.
- the conductive gel film 130 has adhesiveness, and is composed of, for example, a hydrogel body having an acrylic resin crosslinked body as a resin skeleton and uniformly containing water, polyhydric alcohol, and electrolyte neutral salts (NaCl). It is used to enable ohmic connection between the and the electrode terminal 120 and to reduce the impedance with the skin surface.
- a hydrogel body having an acrylic resin crosslinked body as a resin skeleton and uniformly containing water, polyhydric alcohol, and electrolyte neutral salts (NaCl). It is used to enable ohmic connection between the and the electrode terminal 120 and to reduce the impedance with the skin surface.
- the conductive magnet 210 is magnetically attracted to the electrode terminal 120 and the sensor substrate 200 is attached to the detection electrode 100.
- the biological signals for example, electrocardiographic signals
- the biological signals detected at the electrode terminals 120 and 120 are sucked up by the sensor substrate 200 via the conductive magnets 210 and 210, and a biological signal measuring device (not shown) wirelessly or by wire is used. Will be sent to.
- the reason why the detection electrode 100 and the sensor substrate 200 are separated is that the detection electrode 100 is disposable.
- the problem is that the electrolytic substance used for the conductive gel film 130 is extremely corrosive, so that the Au-plated iron plate of the electrode terminal 120 and the conductive magnet 210 corrode in a short period of time, and the electrical characteristics of the biological signal deteriorate. It is to end up.
- an object of the present invention is to provide a highly reliable biological signal detection electrode whose performance is stable for a long period of time while using a conductive gel film.
- the present invention relates to an electrode for detecting a biological signal used by being attached to the skin surface of a living body.
- a conductive gel film provided on the lower surface of the insulating base material so as to cover the detection surface, a drawer electrode having a terminal portion connected to the electrode terminal and exposed on the upper surface of the insulating base material, and the inside of the insulating base material. It is characterized by having a magnetic material arranged below the terminal portion.
- the electrode terminal is characterized by being made of a corrosion-resistant substance that is not corroded by the conductive gel film.
- the corrosion resistant substance is characterized in that it is selected from Ag-AgCl, Ag paste, AU, Pt or carbon.
- the extraction electrode is preferably made of Ag paste.
- the electrode terminal is also made of Ag paste like the extraction electrode.
- the present invention it is possible to provide a highly reliable biological signal detection electrode whose performance is stable for a long period of time while using a conductive gel film.
- FIG. 3 is a cross-sectional view showing a main part of the electrode for detecting a biological signal according to the present invention.
- the cross-sectional view which shows the structure of the conventional example of the electrode for biological signal detection.
- the biological signal detection electrode (detection electrode) of the present invention also has a pair of electrode terminals, but FIG. 1 shows only one end side (for example, the left side) of the electrode terminal, which is not shown.
- the omitted electrode terminal on the other end side has the same structure as the electrode terminal on the one end side.
- only one side of the sensor board 200 is shown.
- the sensor board 200 may be the same as the sensor board described above with reference to FIG.
- the detection electrode (electrode for biological signal detection) 10 has, as a basic configuration, an electrically insulating insulating base material 20, an electrode terminal 30, a conductive gel film 40, and an extraction electrode 50. It is provided with a magnetic material 60.
- the insulating base material 20 is made of a silicone-based resin tape material, but is not limited to the silicone-based resin as long as it has the flexibility to easily deform following the skin surface of a living body. Further, the insulating base material 20 is not limited to a band shape, but may be a circular shape, an elliptical shape, or the like.
- the electrode terminal 30 is embedded in the insulating base material 20, and the signal detection surface 31 on the lower surface thereof is included in a part of the lower surface 21 on the side in contact with the living skin surface of the insulating base material 20. It is buried in 20. That is, the signal detection surface 31 of the electrode terminal 30 is exposed on the lower surface 21 of the insulating base material 20.
- the conductive gel film 40 is provided on the lower surface 21 of the insulating base material 20 so as to cover the signal detection surface 31 of the electrode terminal 30.
- the material of the conductive gel film 40 is the same as that of the conductive gel film 130 described with reference to FIG. 2, for example, an acrylic resin crosslinked body as a resin skeleton, and water, polyhydric alcohol, and electrolyte neutral salts (NaCl). It may be a hydrogel body contained uniformly. This type of hydrogel has, for example, the trade name "Technogel” manufactured by Sekisui Plastics Co., Ltd.
- an adhesive layer 70 may be provided on a portion other than the conductive gel film 40 in order to enhance the adhesiveness to the skin surface.
- the extraction electrode 50 includes a terminal portion 51 that extends laterally from a portion formed so as to cover the upper surface and the side surface of the electrode terminal 30 and is exposed on the upper surface 22 of the insulating base material 20.
- the conductive magnet 210 of the sensor substrate 200 comes into contact with the terminal portion 51.
- the magnetic body 60 is embedded in the insulating base material 20 below the terminal portion 51 as a partner for magnetic attraction of the conductive magnet 210.
- an iron plate is used for the magnetic material 60.
- the conductive magnet 210 is guided by the magnetic body 60 and comes into contact with the terminal portion 51, and the detection electrode 10 and the sensor substrate 200 are electrically and mechanically brought into contact with each other. Connect (contact).
- the magnetic body 60 is not involved in the electrical connection and plays only the role of mechanical connection (bonding).
- the electrode terminal 30 is made of a corrosion-resistant substance that is not corroded by the conductive gel film 40.
- a corrosion-resistant substance examples include Ag-AgCl, Ag paste, AU, Pt or carbon, but Ag-AgCl (silver-silver chloride) is preferable.
- the electrode terminal 30 and the extraction electrode 50 may be integrated and the whole thereof may be formed by Ag paste.
- the conductive gel film 40 even though the conductive gel film 40 is used, corrosion due to the conductive gel film 40 does not occur, the performance is stable for a long period of time, and a highly reliable biological signal detection electrode is used. Is provided.
- Electrodes for detecting biological signals (detection electrodes) 20 Insulation base material 30 Electrode terminal 40 Conductive gel film 50 Drawer electrode 51 Terminal part 60 Magnetic material 70 Adhesive layer
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
Description
電気絶縁性の絶縁基材と、信号検出面が上記絶縁基材の上記皮膚面と接触する側の下面の一部に含まれるように上記絶縁基材内に埋設された電極端子と、上記信号検出面を覆うように上記絶縁基材の下面に設けられた導電性ゲル膜と、上記電極端子に接続され上記絶縁基材の上面に露出する端子部を有する引出電極と、上記絶縁基材内で上記端子部の下方に配置された磁性体とを備えていることを特徴としている。
20 絶縁基材
30 電極端子
40 導電性ゲル膜
50 引出電極
51 端子部
60 磁性体
70 粘着剤層
Claims (5)
- 生体の皮膚面に貼着して用いられる生体信号検出用電極において、
電気絶縁性の絶縁基材と、
信号検出面が上記絶縁基材の上記皮膚面と接触する側の下面の一部に含まれるように上記絶縁基材内に埋設された電極端子と、
上記信号検出面を覆うように上記絶縁基材の下面に設けられた導電性ゲル膜と、
上記電極端子に接続され上記絶縁基材の上面に露出する端子部を有する引出電極と、
上記絶縁基材内で上記端子部の下方に配置された磁性体とを備えていることを特徴とする生体信号検出用電極。 - 上記電極端子は上記導電性ゲル膜によって腐食されない耐腐食性物質からなることを特徴とする請求項1に記載の生体信号検出用電極。
- 上記耐腐食性物質はAg-AgCl、Agペースト、AU、Ptもしくはカーボンの中から選択されることを特徴とする請求項2に記載の生体信号検出用電極。
- 上記引出電極が、Agペーストからなることを特徴とする請求項1ないし3のいずれか1項に記載の生体信号検出用電極。
- 上記電極端子も上記引出電極と同じくAgペーストからなることを特徴とする請求項4に記載の生体信号検出用電極。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/267,266 US20240090812A1 (en) | 2020-12-22 | 2020-12-22 | Biological signal detection electrode |
PCT/JP2020/047824 WO2022137315A1 (ja) | 2020-12-22 | 2020-12-22 | 生体信号検出用電極 |
CN202080108115.6A CN116600712A (zh) | 2020-12-22 | 2020-12-22 | 生物信号检测用电极 |
JP2022570799A JPWO2022137315A1 (ja) | 2020-12-22 | 2020-12-22 |
Applications Claiming Priority (1)
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PCT/JP2020/047824 WO2022137315A1 (ja) | 2020-12-22 | 2020-12-22 | 生体信号検出用電極 |
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WO2022137315A1 true WO2022137315A1 (ja) | 2022-06-30 |
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PCT/JP2020/047824 WO2022137315A1 (ja) | 2020-12-22 | 2020-12-22 | 生体信号検出用電極 |
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US (1) | US20240090812A1 (ja) |
JP (1) | JPWO2022137315A1 (ja) |
CN (1) | CN116600712A (ja) |
WO (1) | WO2022137315A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140082047A (ko) * | 2012-12-21 | 2014-07-02 | 서울대학교산학협력단 | 3차원 임의 곡면으로 변형 가능한 미세 전극 어레이 및 이의 제조 방법 |
WO2018181858A1 (ja) * | 2017-03-31 | 2018-10-04 | 国立大学法人東北大学 | 複合材料及びその製造方法 |
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2020
- 2020-12-22 WO PCT/JP2020/047824 patent/WO2022137315A1/ja active Application Filing
- 2020-12-22 US US18/267,266 patent/US20240090812A1/en active Pending
- 2020-12-22 JP JP2022570799A patent/JPWO2022137315A1/ja active Pending
- 2020-12-22 CN CN202080108115.6A patent/CN116600712A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20140082047A (ko) * | 2012-12-21 | 2014-07-02 | 서울대학교산학협력단 | 3차원 임의 곡면으로 변형 가능한 미세 전극 어레이 및 이의 제조 방법 |
WO2018181858A1 (ja) * | 2017-03-31 | 2018-10-04 | 国立大学法人東北大学 | 複合材料及びその製造方法 |
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CN116600712A (zh) | 2023-08-15 |
US20240090812A1 (en) | 2024-03-21 |
JPWO2022137315A1 (ja) | 2022-06-30 |
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