Tattooing electrode and preparation method and system thereof

A preparation system and tattoo technology, which can be applied to other medical devices, pharmaceutical devices, etc., can solve problems such as complicated wiring and poor adhesion of tattoo electrodes, increase the sensing area, solve signal quality attenuation and motion artifacts, The effect of enhancing light transmission and electrical conductivity

Pending Publication Date: 2022-07-22
上海厉鲨科技有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a tattoo electrode and its preparation method...
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Method used

The preparation method of the tattoo electrode of the present embodiment is by arranging conductive layer, transfer tattoo paper and magnetic attraction layer, and rationally selects the corresponding material of each layer, can utilize the conductivity and the transmission of the silver nanowire material of network shape The high efficiency enhances the light transmittance and electrical conductivity of tattoo electrodes, and reduces the influence of sweat on brain signal transmission without hindering skin respiration. The non-hydrophilicity of the conductive polymer material makes the tattoo electrode washable and can record brain signals stably for a long time. The magnetic layer enables the electrode connector to be adsorbed to the tattoo electrode for signal transmission, which improves the operation convenience of the brain-computer interface. In addition, the tattoo electrode is directly attached to the human skin texture, which can maximize the sensing area, interface adhesion and stability, improve the signal-to-noise ratio of EEG signal recording, and solve the problem of traditional electrodes based on hard metal or conductive gel. Problems such as signal quality attenuation and motion artifacts. The tattoo electrodes can stretch and bend with the skin to improve biocompatibility.
The preparation system of the tattoo electrode of the present embodiment is by arranging conductive layer, transfer tattoo paper and magnetic attraction layer, and rationally selects the corresponding material of each layer, can utilize the conductivity and the transmission of the silver nanowire material of network shape The high efficiency enhances the light transmittance and electrical conductivity of tattoo electrodes, and reduces the influence of sweat on brain signal transmission without hindering skin respiration. The non-hydrophilicity of the conductive polymer material makes the tattoo electrode washable and can record brain signals stably for a long time. The magnetic layer enables the electrode connector to be adsorbed to the tattoo electrode for signal transmission, which improves the operation convenience of the brain-computer interface. In addition, the tattoo electrode is directly attached to the human skin texture, which can maximize the sensing area, interface adhesion and stability, improve the signal-to-noise ratio of EEG signal recording, and solve the problem of traditional electrodes base...
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Abstract

The invention discloses a tattooing electrode and a preparation method and system thereof. The tattoo electrode comprises a conductive layer and transfer printing tattoo paper; the conductive layer comprises a conductor wrapped by a conductive polymer, the conductive polymer is a PEDOT: PSS material, and the conductor is a silver nanowire; the transfer tattoo paper comprises an adhesive layer, a dissolving layer and a supporting layer, the conductive layer is used to form an all-polymer electrode by inkjet printing an electrical conductor on the adhesive layer and the support layer. According to the tattooing electrode and the preparation method and system thereof, the conductive layer, the transfer printing tattooing paper and the magnetic attraction layer are arranged, and materials corresponding to all the layers are reasonably selected, so that the light transmission and the air permeability of the tattooing electrode can be enhanced by utilizing a silver nanowire material in a network shape; the tattoo electrode has the advantages that skin breathing is not hindered, the influence of sweat on brain signal transmission is reduced, the tattoo electrode has washability due to the non-hydrophilicity of the conductive polymer material, and brain signals can be stably recorded for a long time.

Application Domain

Medical devices

Technology Topic

ChemistryElectrically conductive +9

Image

  • Tattooing electrode and preparation method and system thereof
  • Tattooing electrode and preparation method and system thereof
  • Tattooing electrode and preparation method and system thereof

Examples

  • Experimental program(3)

Example Embodiment

[0027] Example 1
[0028] see figure 1 , this embodiment specifically provides a tattoo electrode, including a conductive layer 101 , a transfer tattoo paper 102 and a magnetic attraction layer 103 . The conductive layer 101 includes a conductor wrapped by a conductive polymer, wherein the conductive polymer is PEDOT:PSS material, and the conductor is silver nanowires; the transfer tattoo paper 102 includes an adhesive layer, a dissolving layer and a support layer; the conductive layer 101 is used for All polymer electrodes are formed by inkjet printing of electrical conductors on the adhesive and support layers. Optionally, the magnetic attraction layer 103 includes magnetic nanoparticles wrapped by a conductive polymer; the magnetic attraction layer 103 is used for magnetic attraction with the electrode connector, so that the electrode connector outputs the brain signals obtained by the tattoo electrodes; wherein, the electrode connector Including the magnetic disk, the magnetic disk is used to make the magnetic attracting layer and the electrode connector magnetically attract.
[0029] For the conductive layer, since silver nanowires have high conductivity, high flexibility, and high light transmittance, they are used as conductive materials for the conductive layer. However, due to the high surface roughness of the silver nanowire material and the low adhesion to the flexible substrate, the conductive polymer composed of PEDOT:PSS was coated on the silver nanowires with a mesh structure, and the mesh structure Silver nanowires can ensure the breathing and light transmittance of the skin, and reduce the influence of sweat on the brain signals collected by the tattoo electrodes. The conductive polymer PEDOT:PSS has the advantages of high conductivity, printability, and chemical stability, and can be easily processed into film shapes using conventional techniques. The conductive polymer PEDOT:PSS is also a non-cytotoxic material, which does not pose any risk to skin host cells when attached to human skin, so it has good biocompatibility.
[0030] As a preferred embodiment, see figure 2 A transfer tattoo paper structure is shown, in which one side of the adhesive layer 1 is a support layer 2; it is understood that the other side of the adhesive layer 1 is used for attaching to human skin. The dissolving layer 3 is a water-soluble polyethylene oxide base; the supporting layer 2 includes an ethyl cellulose layer. Among them, the adhesive layer 1 can ensure that it is closely attached to the human skin. The dissolving layer 3 serves as a temporary soft substrate, and the remaining ethyl cellulose layer after dissolving is used as the supporting layer 2 for supporting the conductive layer of the tattoo electrode. The ethyl cellulose layer is a low-cost, skin-safe and easy-to-use material. Based on this method, the conductive layer on the support layer of the transfer tattoo paper can be easily and stably transferred to the human skin.
[0031] The main material of the magnetic attraction layer is magnetic nanoparticles wrapped by a conductive polymer film PEDOT:PSS. Its main purpose is to record brain signals by simply attaching the electrode connector with magnetic properties to the tattoo electrode, which can be stable for a long time. to record brain signals with high signal-to-noise ratio. The production process is to first smear the conductive polymer PEDOT:PSS on the magnetic nanoparticles, dissolve it in a certain proportion of water, and make it into the form of a high-concentration ink solution. In the specific use process of the tattoo electrode of this embodiment, when starting tattooing, the skin around the conductive layer can be disinfected and Vaseline smeared first, and then a tattoo gun is used. The aqueous solution is brought into the skin around the conductive layer and deposited in the dermis layer under the epidermis, forming a magnetic layer. It can be understood that the signal transmission of the tattoo electrode is relayed through the electrode connector. The material of the center of the electrode connector can be silver or silver chloride to play a conductive role, and the surrounding area is a magnetic disk, which can be made of NdFeB magnets. , is a permanent magnet whose magnetic properties are second only to absolute zero holmium magnets, and it acts as the magnetic attraction layer of the magnetic attraction tattoo electrode. When the brain signal needs to be recorded, align the center of the electrode connector jigsaw with the conductive layer of the human skin, the magnetic disk will be connected with the skin magnetic layer according to the magnetic attraction, and stably connect the center of the electrode connector to the conductive layer of the skin , which can be used to transmit brain signals.
[0032] The tattoo electrode of this embodiment can use the conductivity and transmittance of the silver nanowire material in the network shape to enhance the permeability of the tattoo electrode by providing a conductive layer, a transfer tattoo paper and a magnetic layer, and reasonably selecting materials corresponding to each layer. Optical and conductive properties, and reduce the effect of sweat on brain signal transmission without hindering skin respiration. The non-hydrophilic nature of the conductive polymer material makes the tattoo electrodes washable and can record brain signals stably for a long time. The magnetic attraction layer enables the electrode connector to be adsorbed on the tattoo electrode for signal transmission, which improves the operation convenience of the brain-computer interface. In addition, the tattoo electrodes are directly attached to the human skin texture, which can maximize the sensing area, interface adhesion and stability, improve the recording signal-to-noise ratio of EEG signals, and solve the problem of traditional electrodes based on hard metal or conductive gel. problems such as signal quality degradation and motion artifacts. Tattoo electrodes that stretch and bend with the skin improve biocompatibility.

Example Embodiment

[0033] Example 2
[0034] see image 3 As shown, this embodiment specifically provides a method for preparing a tattoo electrode, which is used to prepare the tattoo electrode in Example 1. The preparation method includes:
[0035] S1. inkjet printing the conductor of the tattoo electrode on the transfer tattoo paper to generate an all-polymer electrode;
[0036]S2. Dissolving and dehydrating the transfer tattoo paper, so that the dissolving layer is dissolved and a support layer is formed, and the support layer is used to support the conductive layer of the tattoo electrode. Preferably, the thickness of the support layer is 500 nm.
[0037] Step S1 inkjet printing the silver nanowires wrapped in the conductive polymer film PEDOT:PSS on the adhesive layer of the tattoo paper and the water-soluble polyethylene oxide substrate (ie, the dissolved layer) of the support layer to obtain full polymerization object electrode. Specifically, inkjet printing can be performed in a predetermined area, and printing can be performed according to a preset pattern to obtain a desired patterned tattoo electrode. In step S2, the transfer tattoo paper is dissolved and dehydrated. The thickness of a single printed layer of PEDOT:PSS is 240 nm. After dehydration treatment, it is transferred to human skin. The water-soluble polyethylene oxide substrate is completely dissolved in water, while the silver nanowires wrapped in the conductive polymer film PEDOT:PSS remain intact and maintain their conductive properties. Because of the ultra-thin characteristics of the remaining substrate-free electrodes, they can form full contact with human skin through van der Waals forces. Because the conductive polymer is not hydrophilic, the tattoo electrodes are washable and can record brain signals stably for a long time. Inkjet printing can pattern various materials onto various flexible substrates by means of digital design. Furthermore, inkjet printing has the advantages of high resolution, low cost and high accuracy. Compared with manufacturing processes such as aerosol jetting and photolithography, the tattoo electrode manufacturing process has low cost and simple operation.
[0038] As a preferred embodiment, the preparation method further includes step S0: smearing the conductive polymer of the tattoo electrode on the magnetic nanoparticles, and dissolving it in water in a preset volume ratio to generate a high-concentration ink solution. It can be understood that when the magnetic attraction layer arrangement method in Embodiment 1 is adopted, step S0 is used to deposit the high-concentration ink solution on the dermis layer to form the magnetic attraction layer.
[0039] The preparation method of the tattoo electrode of the present embodiment can utilize the conductivity and transmittance of the silver nanowire material in the network shape to enhance the tattoo by providing a conductive layer, a transfer tattoo paper and a magnetic attraction layer, and reasonably selecting materials corresponding to each layer. The light transmittance and electrical conductivity of the electrodes reduce the effect of sweat on brain signal transmission without hindering skin respiration. The non-hydrophilic nature of the conductive polymer material makes the tattoo electrodes washable and can record brain signals stably for a long time. The magnetic attraction layer enables the electrode connector to be adsorbed on the tattoo electrode for signal transmission, which improves the operation convenience of the brain-computer interface. In addition, the tattoo electrodes are directly attached to the human skin texture, which can maximize the sensing area, interface adhesion and stability, improve the recording signal-to-noise ratio of EEG signals, and solve the problem of traditional electrodes based on hard metal or conductive gel. problems such as signal quality degradation and motion artifacts. Tattoo electrodes that stretch and bend with the skin improve biocompatibility.

Example Embodiment

[0040] Example 3
[0041] see Figure 4 As shown, this embodiment specifically provides a preparation system for a tattoo electrode, which is used for preparing the tattoo electrode in Example 1. The preparation system includes:
[0042] The inkjet printing module 10 is used for inkjet printing of the conductors of the tattoo electrodes on the transfer tattoo paper to generate all-polymer electrodes;
[0043] The dehydration treatment module 20 is used for dissolving and dehydrating the transfer tattoo paper, so as to dissolve the dissolving layer and form a support layer, and the support layer is used to support the conductive layer of the tattoo electrode. Preferably, the thickness of the support layer is 500 nm.
[0044] The inkjet printing module 10 inkjet prints the silver nanowires wrapped in the conductive polymer film PEDOT:PSS on the adhesive layer of the transfer tattoo paper and the water-soluble polyethylene oxide substrate (ie the dissolved layer) of the support layer, All polymer electrodes are obtained. Specifically, inkjet printing can be performed in a predetermined area, and printing can be performed according to a preset pattern to obtain a desired patterned tattoo electrode. The dehydration treatment module 20 dissolves and dehydrates the transfer tattoo paper. The thickness of a single printed layer of PEDOT:PSS is 240 nm. After dehydration treatment, it is transferred to human skin. The water-soluble polyethylene oxide substrate is completely dissolved in water, while the silver nanowires wrapped in the conductive polymer film PEDOT:PSS remain intact and maintain their conductive properties. Because of the ultra-thin characteristics of the remaining substrate-free electrodes, they can form full contact with human skin through van der Waals forces. Because the conductive polymer is not hydrophilic, the tattoo electrodes are washable and can record brain signals stably for a long time. Inkjet printing can pattern various materials onto various flexible substrates by means of digital design. Furthermore, inkjet printing has the advantages of high resolution, low cost and high accuracy. Compared with manufacturing processes such as aerosol jetting and photolithography, the tattoo electrode manufacturing process has low cost and simple operation.
[0045] As a preferred embodiment, the preparation method further includes a magnetic attraction module 30 for smearing the conductive polymer of the tattoo electrode on the magnetic nanoparticles, and dissolving it in water in a preset volume ratio to generate a high-concentration ink solution. It can be understood that when the magnetic attraction layer arrangement in Embodiment 1 is adopted, the magnetic attraction module 30 is used to deposit the high-concentration ink solution on the dermis layer to form the magnetic attraction layer.
[0046] The tattoo electrode preparation system of this embodiment can utilize the conductivity and transmittance of the silver nanowire material in the network shape to enhance tattoos by providing a conductive layer, a transfer tattoo paper and a magnetic attraction layer, and selecting materials corresponding to each layer reasonably. The light transmittance and electrical conductivity of the electrodes reduce the effect of sweat on brain signal transmission without hindering skin respiration. The non-hydrophilic nature of the conductive polymer material makes the tattoo electrodes washable and can record brain signals stably for a long time. The magnetic attraction layer enables the electrode connector to be adsorbed on the tattoo electrode for signal transmission, which improves the operation convenience of the brain-computer interface. In addition, the tattoo electrodes are directly attached to the human skin texture, which can maximize the sensing area, interface adhesion and stability, improve the recording signal-to-noise ratio of EEG signals, and solve the problem of traditional electrodes based on hard metal or conductive gel. problems such as signal quality degradation and motion artifacts. Tattoo electrodes that stretch and bend with the skin improve biocompatibility.

PUM

PropertyMeasurementUnit
Thickness500.0nm

Description & Claims & Application Information

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