WO2007096096A2 - Biomedical surface electrode - Google Patents
Biomedical surface electrode Download PDFInfo
- Publication number
- WO2007096096A2 WO2007096096A2 PCT/EP2007/001365 EP2007001365W WO2007096096A2 WO 2007096096 A2 WO2007096096 A2 WO 2007096096A2 EP 2007001365 W EP2007001365 W EP 2007001365W WO 2007096096 A2 WO2007096096 A2 WO 2007096096A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- layer
- electrode layer
- masking
- substrate
- Prior art date
Links
- 230000000873 masking effect Effects 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 64
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000000017 hydrogel Substances 0.000 description 8
- 239000006260 foam Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 231100000075 skin burn Toxicity 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 239000004821 Contact adhesive Substances 0.000 description 1
- 208000035874 Excoriation Diseases 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- 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
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/0404—Electrodes for external use
- A61N1/0472—Structure-related aspects
- A61N1/0492—Patch electrodes
-
- 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
- A61B5/271—Arrangements of electrodes with cords, cables or leads, e.g. single leads or patient cord assemblies
- A61B5/273—Connection of cords, cables or leads to electrodes
- A61B5/274—Connection of cords, cables or leads to electrodes using snap or button fasteners
Definitions
- This invention relates to a surface electrode which can be used medically to receive and transmit biosignals emanating from a body or to apply low level electrical signals to the body, herein referred to as a biomedical surface electrode.
- Biomedical surface electrodes are well known.
- one such electrode consists of a silver-plated eyelet which is housed within a recessed plastic element or cup.
- a snap fastener stud is located on the outside of the plastic element and acts as a means of connecting the external circuitry to the electrode.
- this type of electrode there is a sponge which has been impregnated with an electrolytic gel and which is located within the plastic electrode housing so that when in use the sponge serves as a conductive bridge between the eyelet and the patient's skin.
- the electrolytic gel enhances the conductivity of the skin and ensures good electrical contact between the patient and the metal sensor.
- the present technology provides that the plastic housing incorporating the eyelet sensor, with its conductive gel, be attached to a disc of open cell plastic foam or microporous tape, which is coated on its underside with a medical -grade contact adhesive.
- This resilient adhesive disc serves to attach the system to, and hold it on the patient's skin.
- a cap is placed over the rigid plastic element in order to isolate the electrode from the atmosphere and thus prevent the drying-out of the conductive gel, which is water based.
- Electrodes of the above type have proved quite reliable in establishing an electrical connection to the patient, but associated with them are several disadvantages. Firstly the design incorporates many components which render the electrode somewhat complex in assembly and therefore relatively expensive to manufacture. Secondly it has a large profile, covers a considerable skin area and lacks flexibility. This rigidity of the element, or housing, can give rise to skin abrasion and irritation and pull on the connecting lead affects the sensor and can give rise to motion artefact signals.
- the present invention therefore seeks to provide a biomedical surface electrode having an improved current density distribution.
- a biomedical surface electrode comprising a flexible electrically insulating substrate, a flexible electrically conductive electrode layer on the substrate, a flexible electrically insulating masking layer on the electrode layer, the masking layer being configured to expose selected regions of the electrode layer, and a flexible electrically conductive adhesive layer on the masking layer which makes electrical contact with the exposed regions of the electrode layer.
- FIG 1 is a cross-section through an embodiment of an electrode according to the invention.
- FIGS 2 (a) to 2 (f) are simplified plan views of the electrode of FIG. 1 showing various alternative configurations for the electrode and masking layers.
- a flexible biomedical surface electrode comprises an electrically insulating substrate 10 in the form of a heat stabilised, adhesion-treated clear polyester layer.
- the substrate 10 is used as the main structural body of the electrode to which all other components are assembled.
- the substrate is thin enough (typically 75 microns thick) to ensure flexibility.
- the substrate is coated on both sides with a treatment enabling an electrically conductive electrode layer 12 to adhere to it .
- An example of a suitable polyester layer for use as the substrate 10 is Mylar from Dupont .
- the electrode layer 12 is a flexible, conductive silver polymer ink which is screen printed onto the substrate 10.
- An example of a suitable ink is 5874 ink from Dupont .
- a flexible electrically insulating masking layer 14 is screen printed onto the silver polymer ink electrode layer 12. However, as will be described with reference to FIG 2, this layer 14 is configured to expose selected regions 16 of the electrode layer 12 where, in use, an electrical connection between the electrode layer 12 and a patient's skin is desired. For regions of the electrode layer which are not to come into contact with the skin the masking layer 14 acts as an insulator, forcing any current to flow only through the exposed regions 16 of the layer 12.
- An example of a suitable material for the masking layer 14 is SD 2460 Flex ink from Norcote .
- a flexible electrically conductive adhesive hydrogel layer 18 is applied to the masking layer 14 which makes electrical contact with the exposed regions 16 of the electrode layer 12.
- the hydrogel layer 18 provides biocompatible adhesion to the skin and a good skin-electrode interface.
- the hydrogel layer 18 is at least the same overall size and shape as the electrode layer 12 and ideally should overlap the perimeter of the latter.
- An example of a suitable hydrogel is FW340 hydrogel from Firstwater .
- a flexible, electrically insulating foam layer 20 has a bio-compatible adhesive on one side for adhesion to the skin and to the substrate 10 whose non-printed side is adhered to the adhesive foam layer.
- the foam layer 20 extends beyond the perimeter of the substrate 10 by at least 5mm.
- the adhesive perimeter region 22 ensures adhesive contact of the electrode assembly to the skin and protects the hydrogel during use.
- An example of a suitable foam material is 0.838mm thick RX232V single sided PE foam from Scapa .
- a rigid electrically conductive stud 24 comprising male and female parts 24A, 24B allows connection of the electrode layer 12 to the outside world.
- the stud 24 passes through the electrode, substrate and foam layers 10, 12 and 20 respectively and compresses these layers between the male and female parts.
- the stud 24 is a snap fastener type, for example, part no. 380335 from Prym fasteners .
- the male part of the stud 24A has a flexible electrically insulating cover 26. This extends beyond the perimeter of the male part by a minimum of 2mm thus avoiding the conductive stud from contacting the skin or the hydrogel.
- the stud cover can be an adhesive label which is waterproof, mark proof and resistant to UV, oil and grease. A material which could be used for this is a heavy duty laser label from Avery.
- the electrode assembly When not in use the electrode assembly is covered with a peelable flexible, electrically non-conductive release liner 28.
- a suitable material is PE140.01 single-sided silicon paper from Cotek.
- the electrode is packaged in a foil laminate pouch (not shown) for maximum shelf life protection.
- a suitable material for the pouch is 35786-G from Perfecseal .
- FIGS 2 (a) to 2 (f) are plan views of the electrode of FIG. 1 showing various alternative configurations for the electrode and masking layers. It will be understood that only the electrode and masking layers 12 and 14 are shown in these figures.
- the electrode layer 12 may be in the form of a solid figure, for example a disc, as shown in FIGS 2 (a) to
- FIG 2 (c) the masking layer 14 has a plurality of circular apertures distributed around the periphery of the electrode layer, exposing corresponding regions 16 of the electrode layer 12.
- FIG 2 (b) There may be several concentric rows of circular apertures, FIG 2 (b) , which can be the same size or vary in size to interfit and achieve a greater packing density.
- Other interfitting shapes such as star shapes, FIG 2 (c) may assist such packing.
- the electrode layer 12 may be in the form of a hollow figure, for example an annulus, as shown in FIGS 2 (d) to 2(f), with the masking layer 14 having a void at its centre corresponding to the central void in the annulus.
- the masking layer has a circular arrangement of apertures similar to FIG 2 (a)
- FIG 2 (e) has apertures in the form of radial slots.
- the exposed regions 16 of the electrode layer 12 do not need to be defined by complete apertures in the masking layer.
- FIG 2 (f) which corresponds in electrical effect to FIG 2 (e) but wherein the slots extend beyond the perimeter of the electrode layer 12 fully to the perimeter of the masking layer 14, and are therefore open at their outer edges.
- the exposed regions 16 are preferably distributed at least around the perimeter of the electrode layer 12.
- the patterned masking layer 14 serves to force the current through the layer 14 at predetermined locations, thus controlling the current density distribution.
- the circumference of the apertures or other patterning effectively gives rise to large peripheral edges to better disperse the current.
- the exposed regions 16 are typically several mm across and a much larger number of them would be used than is shown in the drawings .
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Electrotherapy Devices (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007218246A AU2007218246A1 (en) | 2006-02-23 | 2007-02-16 | Biomedical surface electrode |
EP07703499.9A EP1986547B1 (en) | 2006-02-23 | 2007-02-16 | Biomedical surface electrode |
US12/280,518 US8634895B2 (en) | 2006-02-23 | 2007-02-16 | Biomedical surface electrode |
JP2008555677A JP2009527299A (en) | 2006-02-23 | 2007-02-16 | Biological surface electrode |
ES07703499T ES2732245T3 (en) | 2006-02-23 | 2007-02-16 | Surface biomedical electrode |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20060134A IES20060134A2 (en) | 2006-02-23 | 2006-02-23 | Biomedical surface electrode |
IES2006/0134 | 2006-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007096096A2 true WO2007096096A2 (en) | 2007-08-30 |
WO2007096096A3 WO2007096096A3 (en) | 2007-12-06 |
Family
ID=38437719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/001365 WO2007096096A2 (en) | 2006-02-23 | 2007-02-16 | Biomedical surface electrode |
Country Status (6)
Country | Link |
---|---|
US (1) | US8634895B2 (en) |
EP (1) | EP1986547B1 (en) |
JP (1) | JP2009527299A (en) |
AU (1) | AU2007218246A1 (en) |
IE (1) | IES20060134A2 (en) |
WO (1) | WO2007096096A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017066054A1 (en) * | 2015-10-12 | 2017-04-20 | St. Jude Medical, Cardiology Division, Inc. | Multi-layer body surface electrodes |
Families Citing this family (37)
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US8214007B2 (en) | 2006-11-01 | 2012-07-03 | Welch Allyn, Inc. | Body worn physiological sensor device having a disposable electrode module |
US8126530B2 (en) * | 2009-10-26 | 2012-02-28 | Ethicon, Inc. | Offset electrode |
US9131895B2 (en) | 2010-07-02 | 2015-09-15 | Koninklijke Philips N.V. | Disposable electrode for electro-stimulation |
EP2422697B1 (en) * | 2010-08-27 | 2014-04-16 | General Electric Company | Sensor for measuring biosignals |
CN103313754B (en) | 2010-11-16 | 2015-09-30 | 小利兰·斯坦福大学理事会 | Be used for the treatment of the system and method for xerophthalmia |
US9821159B2 (en) | 2010-11-16 | 2017-11-21 | The Board Of Trustees Of The Leland Stanford Junior University | Stimulation devices and methods |
US9808196B2 (en) | 2010-11-17 | 2017-11-07 | Smart Solutions Technologies, S.L. | Sensors |
JP5707504B2 (en) | 2010-11-17 | 2015-04-30 | スマート ソリュションズ テクノロジーズ, エス.エル. | Sensor for acquiring physiological signals |
EP2465426A1 (en) * | 2010-12-20 | 2012-06-20 | General Electric Company | Biomedical sensor |
US9700222B2 (en) | 2011-12-02 | 2017-07-11 | Lumiradx Uk Ltd | Health-monitor patch |
US9734304B2 (en) | 2011-12-02 | 2017-08-15 | Lumiradx Uk Ltd | Versatile sensors with data fusion functionality |
WO2014047032A1 (en) * | 2012-09-18 | 2014-03-27 | Worcester Polytechnic Institute | Fabrication and use of epidermal electrodes |
US11944441B2 (en) | 2012-12-31 | 2024-04-02 | Suunto Oy | Electro-mechanic assembly and integrated snap connectors |
US11058338B2 (en) | 2012-12-31 | 2021-07-13 | Suunto Oy | Electrode assembly |
US9861291B2 (en) * | 2012-12-31 | 2018-01-09 | Suunto Oy | Electrode assembly |
EP2967817B1 (en) | 2013-03-12 | 2021-03-10 | Oculeve, Inc. | Implant delivery devices and systems |
CN105307718B (en) | 2013-04-19 | 2018-05-11 | 奥库利维公司 | Nose stimulating apparatus and method |
KR102194246B1 (en) * | 2013-11-27 | 2020-12-22 | 삼성전자주식회사 | Electrode for body and device for detecting bio-signal comprising the same |
EP3689338A1 (en) | 2014-02-25 | 2020-08-05 | Oculeve, Inc. | Polymer formulations for nasolacrimal stimulation |
WO2016015025A1 (en) | 2014-07-25 | 2016-01-28 | Oculeve, Inc. | Stimulation patterns for treating dry eye |
AU2015335772B2 (en) | 2014-10-22 | 2020-07-09 | Oculeve, Inc. | Contact lens for increasing tear production |
CA2965363A1 (en) | 2014-10-22 | 2016-04-28 | Oculeve, Inc. | Implantable nasal stimulator systems and methods |
AU2015335776B2 (en) | 2014-10-22 | 2020-09-03 | Oculeve, Inc. | Stimulation devices and methods for treating dry eye |
WO2016205881A1 (en) * | 2015-06-23 | 2016-12-29 | Ti2 Medical Pty Ltd | Anisotropically conductive material for use with a biological surface |
US10426958B2 (en) | 2015-12-04 | 2019-10-01 | Oculeve, Inc. | Intranasal stimulation for enhanced release of ocular mucins and other tear proteins |
US10252048B2 (en) | 2016-02-19 | 2019-04-09 | Oculeve, Inc. | Nasal stimulation for rhinitis, nasal congestion, and ocular allergies |
US10918864B2 (en) | 2016-05-02 | 2021-02-16 | Oculeve, Inc. | Intranasal stimulation for treatment of meibomian gland disease and blepharitis |
US11247039B2 (en) | 2016-05-03 | 2022-02-15 | Btl Healthcare Technologies A.S. | Device including RF source of energy and vacuum system |
US10583287B2 (en) | 2016-05-23 | 2020-03-10 | Btl Medical Technologies S.R.O. | Systems and methods for tissue treatment |
US10556122B1 (en) | 2016-07-01 | 2020-02-11 | Btl Medical Technologies S.R.O. | Aesthetic method of biological structure treatment by magnetic field |
AT519280B1 (en) * | 2016-10-21 | 2019-08-15 | Leonh Lang | Electrode for attachment to human skin |
RU2019118600A (en) | 2016-12-02 | 2021-01-11 | Окулив, Инк. | APPARATUS AND METHOD FOR MAKING DRY EYE SYNDROME PREDICTION AND TREATMENT RECOMMENDATIONS |
WO2021185423A1 (en) * | 2020-03-17 | 2021-09-23 | Lempré Aps | Patch for electrical stimulation of skin tissue |
CN111430060B (en) * | 2020-03-30 | 2021-09-03 | 厦门大学 | Silk flexible electrode for electrocardio monitoring and manufacturing method thereof |
US11878167B2 (en) | 2020-05-04 | 2024-01-23 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
WO2021224678A1 (en) * | 2020-05-04 | 2021-11-11 | Btl Medical Technologies S.R.O. | Device and method for unattended treatment of a patient |
US11896816B2 (en) * | 2021-11-03 | 2024-02-13 | Btl Healthcare Technologies A.S. | Device and method for unattended treatment of a patient |
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US5354328A (en) * | 1993-01-19 | 1994-10-11 | Siemens Pacesetter, Inc. | Patch electrode for an implantable defibrillator |
US6019877A (en) * | 1998-06-18 | 2000-02-01 | Zmd Corporation | Protecting medical electrodes from corrosion |
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US6356779B1 (en) * | 1999-06-04 | 2002-03-12 | 3M Innovative Properties Company | Universally functional biomedical electrode |
US6731977B2 (en) | 2001-01-22 | 2004-05-04 | Iomed, Inc. | Iontophoretic electrode with improved current distribution |
US20040122500A1 (en) * | 2002-12-19 | 2004-06-24 | Kimberly-Clark Worldwide, Inc. | Electrode for utilizing edge effect to create uniform current density |
US7403807B2 (en) * | 2004-07-27 | 2008-07-22 | Zoll Medical Corporation | Medical electrode with peripheral edge of conductor sealed from electrolyte |
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2006
- 2006-02-23 IE IE20060134A patent/IES20060134A2/en not_active IP Right Cessation
-
2007
- 2007-02-16 WO PCT/EP2007/001365 patent/WO2007096096A2/en active Application Filing
- 2007-02-16 US US12/280,518 patent/US8634895B2/en not_active Expired - Fee Related
- 2007-02-16 EP EP07703499.9A patent/EP1986547B1/en active Active
- 2007-02-16 JP JP2008555677A patent/JP2009527299A/en active Pending
- 2007-02-16 AU AU2007218246A patent/AU2007218246A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017066054A1 (en) * | 2015-10-12 | 2017-04-20 | St. Jude Medical, Cardiology Division, Inc. | Multi-layer body surface electrodes |
CN108135526A (en) * | 2015-10-12 | 2018-06-08 | 圣犹达医疗用品心脏病学部门有限公司 | Multilayer body surface electrodes |
US11141583B2 (en) | 2015-10-12 | 2021-10-12 | St. Jude Medical, Cardiology Division, Inc. | Multi-layer body surface electrodes |
Also Published As
Publication number | Publication date |
---|---|
JP2009527299A (en) | 2009-07-30 |
IES20060134A2 (en) | 2007-09-05 |
US8634895B2 (en) | 2014-01-21 |
EP1986547A2 (en) | 2008-11-05 |
WO2007096096A3 (en) | 2007-12-06 |
EP1986547B1 (en) | 2019-03-27 |
AU2007218246A1 (en) | 2007-08-30 |
US20090043185A1 (en) | 2009-02-12 |
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