Electrode and wearing device

Abstract

This disclosure relates to electrodes and wearable devices. An electrode (100) is disclosed, configured to be disposed on a user's skin for recording electrical activity. The electrode (100) includes a first magnetic material (110) extending along a first plane (XY). The first magnetic material (110) includes a first surface (112) configured to be disposed on the user's skin. The electrode (100) includes a magnet (120) disposed at a distance (D) away from the first magnetic material (110), such that the first magnetic material (110) and the magnet (120) interact magnetically. The electrode (100) includes an attachment member (130) disposed in contact with the first magnetic material (110) and the magnet (120) to maintain the distance (D) between the first magnetic material (110) and the magnet (120).

Description

Technical Field

[0001] This invention relates to an electrode and a wearable device including said electrode. The invention also relates to a hearing device including said electrode. More specifically, this disclosure relates to an electrode configured to be disposed on a user's skin for recording electrical activity and a wearable device including one or more said electrodes. Background Technology

[0002] The measurement of electrical activity from users, such as bioelectrical signals from the skin, plays a crucial role in various fields including medical diagnostics, health monitoring, and human-computer interaction. Electrodes are commonly used as interfaces for detecting and recording these signals, such as electrocardiograms (ECG), electroencephalograms (EEG), and electromyograms (EMG). Traditional electrodes often rely on gel-based materials to enhance conductivity between the skin and the electrode surface. While the use of gel-based materials enhances conductivity, it can cause skin irritation, limited reusability, and drying over time, which can degrade signal quality. Dry electrodes do not require gels, but achieving consistent contact quality often presents challenges, especially during exercise or under suboptimal environmental conditions.

[0003] Therefore, improved electrodes are needed to address or at least mitigate the aforementioned challenges. Summary of the Invention

[0004] The object of this invention is to provide improved electrodes and improved hearing devices that have improved contact with the user's skin without causing discomfort to the user. Another object of this invention is to provide improved electrodes and improved hearing devices suitable for a wide range of users with various skin types and preferences. Yet another object of this invention is to provide improved electrodes and improved hearing devices that can be easily and user-friendly replaced by the user.

[0005] According to a first aspect of the invention, an electrode is disclosed. The electrode is configured to be disposed on a user's skin for recording electrical activity. The electrode includes a first magnetic material. The first magnetic material extends along a first plane. The first magnetic material includes a first surface. The first surface is configured to be disposed on the user's skin. The electrode also includes a magnet disposed at a distance away from the first magnetic material, such that the first magnetic material and the magnet magnetically interact. The electrode further includes an attachment member disposed in contact with the first magnetic material and the magnet to maintain the distance between the first magnetic material and the magnet.

[0006] According to a second aspect of the invention, a hearing device is disclosed. The hearing device is configured to be worn by a user. The hearing device includes electrodes. The electrodes are configured to be disposed on the user's skin for recording electrical activity. The electrodes include a first magnetic material. The first magnetic material extends along a first plane. The first magnetic material includes a first surface. The first surface is configured to be disposed on the user's skin. The electrodes also include a magnet, disposed at a distance away from the first magnetic material, such that the first magnetic material and the magnet magnetically interact. The electrodes also include an attachment member, disposed in contact with the first magnetic material and the magnet to maintain a distance between the first magnetic material and the magnet. The first magnetic material of the electrodes is disposed on the first surface of the hearing device. The first surface of the hearing device is configured to be disposed on the user's skin. The magnet and the attachment member of the electrodes are disposed within the hearing device.

[0007] Advantageously, the electrodes are configured to be placed on the user's skin for recording electrical activity because this allows the conversion of bioelectrical signals generated by the user's body into electrical signals that can be measured and analyzed by an external system. Depending on the desired electrical activity to be recorded, the electrodes can be placed on various parts of the user's body. For example, in electromyography (EMG), the electrodes can be placed on the user's chest to record electrical activity generated by the skeletal muscles of the chest. In electrocardiography (ECG), the electrodes can be placed on the user's chest to record electrical activity generated by the user's heart. In electroencephalography (EEG), the electrodes can be placed on the user's head to record electrical activity generated by the user's brain.

[0008] The electrode includes a first magnetic material. The first magnetic material extends along a first plane. The first magnetic material includes a first surface. The first surface of the first magnetic material may extend along the first plane. The first surface is configured to be disposed on a user's skin. Therefore, the first surface of the first magnetic material is configured to contact the user's skin to record desired electrical activity of the user's body. The first magnetic material may have other surfaces. Advantageously, the electrode includes a first magnetic material because it allows the first magnetic material to be designed in a simple and user-friendly manner. Advantageously, the first magnetic material extends along the first plane because the area of ​​the first magnetic material extending along the first plane can be designed in a flexible and desired manner. For example, the area of ​​the first surface of the first magnetic material extending along the first plane can be designed in a flexible and desired manner.

[0009] The electrodes also include a magnet. The magnet is arranged at a distance from the first magnetic material. Advantageously, the magnet is arranged away from the user's skin because it prevents or at least mitigates any skin irritation, allergic reactions, or any interaction between the magnet and other medical devices that the user may use. The distance between the first magnetic material and the magnet can be understood as the minimum distance between the first magnetic material and the magnet.

[0010] The first magnetic material interacts magnetically with a magnet. The first magnetic material can be attracted to the magnet. The first magnetic material can include any material suitable for magnetic interaction with a magnet. The magnet is advantageous because it allows the first magnetic material to be held in place / positioned on the user's skin in a stable and robust manner.

[0011] The first magnetic material can include any material suitable for being magnetized and / or attracted to a magnet. The first magnetic material can be any magnetic material, such as a ferromagnetic material or alloy, or other material having similar magnetic properties (such as relative permeability). The first magnetic material can have a relative permeability of at least 100 (µF). / The magnet can be any type of magnet capable of magnetically interacting with a first magnetic material, such as a permanent magnet or an electromagnet. The magnet can include any type of magnet, such as a ferrite magnet.

[0012] The electrode also includes an attachment member. The attachment member is arranged to contact the first magnetic material and the magnet to maintain a distance between the first magnetic material and the magnet. Thus, the attachment member allows for maintaining the distance between the first magnetic material and the magnet. The attachment member also allows for maintaining the position / location of the first magnetic material relative to the magnet. Therefore, the attachment member facilitates magnetic interaction between the magnet and the first magnetic material. The attachment member also prevents or at least mitigates the risk of the electrode dislodging during removal from the user's skin. The attachment member can be any component configured to maintain the distance between the first magnetic material and the magnet. Examples of the attachment member can be a rod, cylinder, block, housing, adhesive, or any material suitable for maintaining the distance between the first magnetic material and the magnet. The magnet can include a cavity for receiving the attachment member. In the case where the attachment member is a rod, the magnet can have an annular shape to receive a portion of the attachment member on the magnet.

[0013] Advantageously, the hearing device includes electrodes because the user can wear the hearing device in a simple, user-friendly, and convenient manner while the electrodes record electrical activity from the user throughout the day. Therefore, the hearing device allows the user to perform other activities while the electrodes record electrical activity from the user. Advantageously, the first magnetic material of the electrodes is disposed on a first surface of the hearing device because it allows the electrodes to record electrical activity. Advantageously, the attachment members of the magnet and electrodes are disposed within the hearing device because, since the attachment members of the magnet and electrodes are not disposed on a surface (e.g., the first surface of the hearing device), it achieves a user-friendly hearing device. The attachment members of the magnet and electrodes can be disposed inside the hearing device. For example, the attachment members of the magnet and electrodes can be disposed inside a housing disposed inside the hearing device. The hearing device can be any hearing device configured for wear by a user.

[0014] Overall, the electrodes in the hearing device are advantageous because they allow the first magnetic material to be held in place / positioned on the user's skin in a simple, stable, and robust manner. Therefore, it allows for improved contact with the user's skin without causing discomfort. The electrodes are also advantageous because they allow for the design of their characteristics in a flexible and user-friendly manner, such as modifying the size or properties of the electrodes, for example, the surface roughness of the first magnetic material. The electrodes are also advantageous because they allow for durable electrodes that can be cleaned in a user-friendly manner. This, in turn, allows for cost-effective electrodes with improved hygiene.

[0015] The electrode can have any shape or size along the first plane. The size of the electrode along the first plane can be defined by the size of the first magnetic material along the first plane. The first magnetic material can have a circular shape, such as a circle or an ellipse. In such a case, the size of the first magnetic material along the first plane can correspond to the diameter of the first magnetic material.

[0016] It will be understood that the electrodes can be used in any wearing device such as a hat, a strap such as a wristband, a chest strap, a headband, a leg strap, or any other wearing device. In one embodiment, the hearing device is configured to be worn by a user. The hearing device can be positioned at the user's ear, on the user's ear, above the user's ear, in the user's ear, in the user's ear canal, behind the user's ear, and / or in the user's outer ear; that is, the hearing device is configured to be worn inside, above, above, and / or at the user's ear. A user may wear two hearing devices, one in each ear. The two hearing devices can be connected, such as wirelessly and / or via wired connection, such as in a binaural hearing aid system.

[0017] Hearing devices can be audible, such as headphones, binaural headphones, in-ear headphones, earbuds, hearing aids, personal sound amplification products (PSAPs), over-the-counter hearing devices, hearing protection devices, integrated hearing devices, custom-made hearing devices, or hearing devices that can be worn on another head. Hearing devices can include prescription and over-the-counter devices.

[0018] Hearing devices can take the form of various housing types or shape elements. Some of these shape elements are behind-the-ear (BTE) hearing devices, in-the-canal (RIC) hearing devices, in-the-ear (RIE) hearing devices, or microphone and in-the-ear (MaRIE) hearing devices. These devices may include a BTE unit and an in-the-ear (ITE) unit, with the BTE unit configured to be worn behind the user's ear and the ITE unit configured to be partially or fully inserted into the user's ear canal. Typically, a BTE unit may include at least one input transducer, a power supply, and a processing unit. The term BTE hearing device refers to a hearing device in which the receiver (i.e., the output transducer) is contained within the BTE unit, and sound is directed to the ITE unit through a sound tube connecting the BTE unit and the ITE unit. The terms RIE, RIC, and MaRIE hearing devices refer to hearing devices in which the receiver is contained within the ITE unit, and the ITE unit is coupled to the BTE unit via a connector cable or wire configured to transmit electrical signals between the BTE unit and the ITE unit.

[0019] Some of these shape factors are in-the-ear (ITE) hearing devices, complete-in-the-canal (CIC) hearing devices, or invisible-in-the-canal (IIC) hearing devices. These hearing devices may include an ITE unit, wherein the ITE unit may include at least one input converter, power supply, processing unit, and output converter. These shape factors can be custom-made devices, meaning that the ITE unit may include a housing having an outer shape molded to conform to the shape of a particular user's ear canal. This housing is made of a rigid material (such as a rigid polymer or metal) or a soft material (such as a rubber-like polymer).

[0020] Some of these shape elements are earplugs, on or above earphones. Those skilled in the art are familiar with different types of hearing devices and various options for positioning the hearing device inside, on, above, and / or at the ear of the hearing device wearer. Hearing devices (or a pair of hearing devices) can be custom-fit, standard-fit, open-fit, and / or closed-fit.

[0021] In one embodiment, the hearing device may include one or more input transducers. The one or more input transducers may include one or more microphones. The one or more input transducers may include one or more vibration sensors configured to detect bone vibrations. The one or more input transducers may be configured to convert an acoustic signal into a first electrical input signal. The first electrical input signal may be an analog signal. The first electrical input signal may be a digital signal. The one or more input transducers may be coupled to one or more analog-to-digital converters configured to convert the analog first input signal into a digital first input signal.

[0022] In one embodiment, the hearing device may include one or more antennas configured for wireless communication. The one or more antennas may include an electrical antenna. The electrical antenna may be configured for wireless communication at a first frequency. The first frequency may be higher than 800 MHz, preferably with a wavelength between 900 MHz and 6 GHz. The first frequency may be between 902 MHz and 928 MHz. The first frequency may be between 2.4 GHz and 2.5 GHz. The first frequency may be between 5.725 GHz and 5.875 GHz. The one or more antennas may include a magnetic antenna. The magnetic antenna may include a magnetic core. The magnetic antenna may include a coil. The coil may be wound around the magnetic core. The magnetic antenna may be configured for wireless communication at a second frequency. The second frequency may be lower than 100 MHz. The second frequency may be between 9 MHz and 15 MHz.

[0023] In an embodiment, the hearing device may include one or more wireless communication units. These units may include one or more wireless receivers, one or more wireless transmitters, one or more transmitter-receiver pairs, and / or one or more transceivers. At least one of the wireless communication units may be coupled to one or more antennas. The wireless communication units may be configured to convert wireless signals received by at least one of the antennas into a second electrical input signal. The hearing device may be configured for wired / wireless audio communication, for example, enabling a user to listen to media such as music or radio and / or enabling a user to make telephone calls.

[0024] In implementations, the wireless signal may originate from one or more external sources and / or external devices, such as multiple spouse microphone devices, multiple wireless audio transmitters, multiple smart computers, and / or multiple distributed microphone arrays associated with the wireless transmitters. The wireless input signal may originate from another hearing device (e.g., as part of a binaural hearing system) and / or from one or more accessory devices (such as smartphones and / or smartwatches).

[0025] In an embodiment, the hearing device may include a processing unit. The processing unit may be configured to process a first electrical input signal and / or a second electrical input signal. Processing may include compensating for a user's hearing loss, i.e., applying a frequency-dependent gain to the input signal based on the user's frequency-dependent hearing loss. Processing may include performing feedback cancellation, beamforming, tinnitus reduction / masking, noise reduction, noise cancellation, speech recognition, bass adjustment, treble adjustment, and / or processing of user input. The processing unit may be a processor, integrated circuit, application, functional module, etc. The processing unit may be implemented in a signal processing chip or a printed circuit board (PCB). The processing unit may be configured to provide a first electrical output signal based on the processing of the first electrical input signal and / or the second electrical input signal. The processing unit may be configured to provide a second electrical output signal. The second electrical output signal may be based on the processing of the first electrical input signal and / or the second electrical input signal.

[0026] In an implementation, the hearing device may include an output transducer. The output transducer may be coupled to a processing unit. The output transducer may be a receiver. It should be noted that, in this context, the receiver may be a speaker, and a wireless receiver may be a device configured to process wireless signals. The receiver may be configured to convert a first electrical output signal into an audio output signal. The output transducer may be coupled to the processing unit via a magnetic antenna. The output transducer may be included in an ITE unit or headphones, for example, an in-ear receiver (RIE) unit or a microphone and in-ear receiver (MaRIE) unit of a hearing device. One or more input transducers may be included in an ITE unit or headphones.

[0027] In one embodiment, the wireless communication unit can be configured to convert the second electrical output signal into a wireless output signal. The wireless output signal may include synchronization data. The wireless communication unit can be configured to transmit the wireless output signal via at least one of one or more antennas.

[0028] In one embodiment, the hearing device may include an analog-to-digital converter configured to convert a first electrical output signal, a second electrical output signal, and / or a wireless output signal into an analog signal.

[0029] In implementations, the hearing device may include a vent. A vent is a physical channel, such as a canal or tube, primarily arranged to provide pressure equalization across a housing placed in the ear (such as the ITE unit of an ITE hearing device, the ITE unit of a BTE hearing device, a CIC hearing device, a RIE hearing device, a RIC hearing device, a MaRIE hearing device, or a dome earmold). The vent may be a pressure vent with a small cross-sectional area, preferably sound-sealed. The vent may be a sound vent configured for blockage elimination. The vent may be an active vent capable of opening or closing during use of the hearing device. This active vent may include a valve.

[0030] In one embodiment, the hearing device may include a power source. The power source may include a battery providing a first voltage. The battery may be a rechargeable battery or a replaceable battery. The power source may include a power management unit. The power management unit may be configured to convert the first voltage into a second voltage. The power source may include a charging coil. The charging coil may be provided by a magnetic antenna.

[0031] In an implementation, the hearing device may include memory, including memory in volatile and non-volatile forms.

[0032] The first magnetic material may further include a second surface. This second surface may be arranged opposite to the first surface. A magnet may include the first surface. The first surface of the magnet may face the second surface of the first magnetic material. The distance may correspond to the distance between the first surface of the magnet and the second surface of the first magnetic material extending in a direction perpendicular to the first plane.

[0033] The magnet may have a first surface extending along a first plane. The magnet may have a second surface. The second surface of the magnet may be arranged opposite the first surface of the magnet. Several different distances may exist between the first surface of the magnet and the second surface of the first magnetic material. These distances may correspond to the minimum distance between the first surface of the magnet and the second surface of the first magnetic material along this direction. The electrode may have a height along this direction. The height of the electrode along this direction may be in the range of 0.3 mm to 1 mm.

[0034] The electrode may further include a second magnetic material. The second magnetic material may extend along the first plane. The second magnetic material may include a first surface and a second surface. The second surface of the second magnetic material may be arranged opposite to the first surface. In the presence of the second magnetic material, the first surface of the second magnetic material may be configured to be disposed on the user's skin. The second surface of the second magnetic material may be configured to magnetically interact with a magnet and be attached to the first surface of the first magnetic material.

[0035] The second surface of the second magnetic material can be configured to attach to the first surface of the first magnetic material, thereby covering the first surface of the first magnetic material. In other words, in the presence of the second magnetic material, the second surface of the second magnetic material can be configured to attach to the first surface of the first magnetic material, thus covering the first surface of the first magnetic material. Therefore, the first surface of the second magnetic material can be configured to be disposed on the user's skin.

[0036] Therefore, when the electrode includes a second magnetic material, the second surface of the second magnetic material can be configured to attach to the first surface of the first magnetic material, thereby covering the first surface of the first magnetic material. Thus, since the first surface of the first magnetic material is covered, the first surface of the second magnetic material can be configured to be disposed on the user's skin.

[0037] The second magnetic material may be advantageous because it can serve as both a biocompatible interface and an environmental interface for the electrode. For example, the properties of the second magnetic material can be selected to be physiologically inert, non-cytotoxic, and non-sensitizing, suitable for long-term contact with the user's skin. The second magnetic material can advantageously protect the underlying first magnetic material. Therefore, this arrangement allows for improved electrodes because the first magnetic material can be optimized for magnetic flux properties and the second magnetic material can be optimized for chemical resistance, such as corrosion resistance and oxidation resistance. Thus, this arrangement allows for the long-term structural and functional integrity of the electrode.

[0038] Advantageously, the second surface of the second magnetic material can be configured to magnetically interact with the magnet and can be attached to the first surface of the first magnetic material, since the second magnetic material can be attached to the electrode. Thus, the second magnetic material does not detach. Advantageously, the user can easily and user-friendly arrange the second magnetic material on the first magnetic material without any assistance from a professional. The second magnetic material allows for improved electrodes because the user can attach the second magnetic material to the first magnetic material when needed. The second magnetic material can differ from the first magnetic material. The first surface of the second magnetic material can have different properties than the first surface of the first magnetic material. For example, the first surface of the second magnetic material can be rougher than the first surface of the first magnetic material. In such cases, and when the electrode needs to be arranged on a hairy area of ​​the user's skin, the user can arrange the second magnetic material on the first magnetic material to improve the contact between the electrode and the user's skin. Therefore, the second magnetic material can allow for improved contact between the electrode and the user's skin, i.e., recording electrical activity to record the electrical activity desired by the user. The electrode can include multiple second magnetic materials, such as two or three second magnetic materials. The second magnetic material can be any magnetic material, such as ferromagnetic materials or alloys, or other materials with similar magnetic properties (such as relative permeability).

[0039] The second magnetic material may have the same shape and size as the first magnetic material. The second magnetic material does not need to have the same shape or size as the first magnetic material. The second magnetic material may have a larger size than the first magnetic material. The second magnetic material may have a smaller size than the first magnetic material. The magnet may have the same shape and size as the first magnetic material. The magnet does not need to have the same shape or size as the first magnetic material. The magnet may have a larger size than the first magnetic material. The magnet may have a smaller size than the first magnetic material. The material of the second magnetic material may be the same as the first magnetic material. The material of the second magnetic material does not need to be the same as the first magnetic material. The second magnetic material may have a relative permeability (µ) of at least 100. / µ0).

[0040] The second magnetic material may include a first pattern on the first surface. The first pattern may include protrusions and / or depressions.

[0041] Advantageously, the second magnetic material may include a first pattern on the first surface, as this pattern allows for improved contact with the user's skin. The first pattern can be customized to suit the user's needs. The first pattern can be configured to conform to the shape of the user's skin. The first pattern can provide improved comfort for the user because it prevents the second magnetic material from heating up or adhering to the user's skin, as it allows heat or sweat from the user's skin to circulate between the second magnetic material and the user's skin.

[0042] The first pattern may include protrusions. Protrusions may include dots, lines, or shapes. For example, a protrusion may be a dimple projecting from the first surface of the second magnetic material. Advantageously, the first pattern may include protrusions because protrusions can improve contact between the user's skin and the first surface of the second magnetic material. For example, in hairy areas of the user's skin (e.g., the user's scalp), protrusions can improve contact with the user's skin.

[0043] The first pattern may include a recess. The recess may include a dot, a line, or a shape. For example, a recess may be the shape of a mark, for instance, recessed into the first surface of a second magnetic material. Advantageously, the first pattern may include a recess because the recess can improve comfort in bony areas of the user's body, such as the user's wrist.

[0044] The first pattern may include multiple protrusions. The multiple protrusions may include any one or any combination of points, lines, or shapes protruding from the first surface of the second magnetic material. Alternatively or in combination, the first pattern may include multiple recesses. The multiple recesses may include any one or any combination of points, lines, or shapes recessed into the first surface of the second magnetic material. The multiple protrusions and / or multiple recesses may be arranged sequentially across the first surface of the second magnetic material. The multiple protrusions and / or multiple recesses may be arranged randomly across the first surface of the second magnetic material.

[0045] The first magnetic material may include a second pattern on the first surface. The second pattern may include protrusions and / or depressions.

[0046] Advantageously, the first magnetic material may include a second pattern on the first surface, as the second pattern allows for improved contact with the user's skin. The second pattern can be customized to the user's needs. The second pattern can be configured to conform to the desired shape of the user's skin. The second pattern can provide improved comfort for the user because it prevents the second magnetic material from heating up or adhering to the user's skin, and because it allows heat or sweat from the user's skin to circulate between the second magnetic material and the user's skin.

[0047] The second pattern may include protrusions. Protrusions may include dots, lines, or shapes. For example, a protrusion may be a dimple projecting from the first surface of the first magnetic material. Advantageously, the second pattern may include protrusions because protrusions can improve contact between the user's skin and the first surface of the first magnetic material. For example, in hairy areas of the user's skin (e.g., the user's scalp), protrusions can improve contact with the user's skin.

[0048] The second pattern may include a recess. A recess may include a dot, a line, or a shape. For example, a recess may be the shape of a mark, for instance, recessed into the first surface of a first surface of a first magnetic material. Advantageously, the second pattern may include a recess because a recess can improve comfort in bony areas of the user's body, such as the user's wrist.

[0049] The second pattern may include multiple protrusions. The multiple protrusions may include any one or any combination of points, lines, or shapes protruding from the first surface of the first magnetic material. Alternatively or in combination, the second pattern may include multiple recesses. The multiple recesses may include any one or any combination of points, lines, or shapes recessed into the first surface of the first magnetic material. The multiple protrusions and / or multiple recesses may be arranged sequentially across the first surface of the first magnetic material. The multiple protrusions and / or multiple recesses may be arranged randomly across the first surface of the first magnetic material.

[0050] The first and / or second patterns may include any one or any combination of shapes, lines, or dots. Therefore, shapes, lines, or dots can improve the surface roughness of the respective magnetic material and thus improve contact with the user's skin. Information may also be provided to the user, for example, indicating which side of the second magnetic material should be attached to the first surface of the first magnetic material.

[0051] A first surface of the first magnetic material may include a notch. A second surface of the second magnetic material may include a corresponding protrusion. When the second surface of the second magnetic material is magnetically attached to the first surface of the first magnetic material, the protrusion of the second surface of the second magnetic material can be accommodated within the notch of the first surface of the first magnetic material. The notch of the first surface of the first magnetic material and the corresponding protrusion of the second surface of the second magnetic material allow the second magnetic material to attach to the first magnetic material in a more stable and aligned manner.

[0052] A more stable attachment can further reduce the relative movement between the first magnetic material and the second magnetic material along the first plane. The notch on the first surface of the first magnetic material and the corresponding protrusion on the second surface of the second magnetic material can inform the user that the second magnetic material is correctly positioned on the first magnetic material.

[0053] The first magnetic material and / or the second magnetic material may include a coating layer that covers at least the first surface of the respective magnetic material.

[0054] Advantageously, the first and / or second magnetic materials may include a coating layer, because the coating layer can improve the durability of the first surface of the respective magnetic material, for example, protecting the respective magnetic material from corrosion, oxidation, etc. The coating layer can completely cover the respective magnetic material, that is, the coating layer can cover all surfaces of the respective magnetic material. The coating layer can also partially cover the respective magnetic material. For example, the coating layer can cover the first surface of the respective magnetic material.

[0055] The coating layer may preferably contain gold. The coating layer may contain carbon, such as a carbon-based material. The coating layer may be conductive. Therefore, the coating layer can facilitate the recording of electrical activity from a user's skin or a second surface of an attached magnetic material, such as conducting electrical signals from a second surface of a second magnetic material to a first magnetic material. The coating layer may have a thickness ranging from 0.5 μm to 2.5 μm. The coating layer may be applied in a manner known in the art, such as electroplating. For example, electroplating can be used to apply the coating layer.

[0056] The first magnetic material and / or the second magnetic material may have a circular shape, such as a circle.

[0057] Therefore, a circular shape can increase user comfort because it does not have any corners. The first magnetic material and / or the second magnetic material can have a circular shape along the first plane, such as a circle or an ellipse along the first plane.

[0058] The thickness of the first magnetic material and / or the thickness of the second magnetic material along this direction can be in the range of 0.2 mm to 0.6 mm.

[0059] The thickness of the first magnetic material and / or the thickness of the second magnetic material can allow the electrodes to be barely felt on the user's skin, while still maintaining improved contact with the user's skin without causing discomfort.

[0060] The term thickness thus means the size of the first magnetic material or the size of the second magnetic material in the direction perpendicular to the first plane.

[0061] The dimensions of the first magnetic material and / or the dimensions of the second magnetic material along the first plane can be in the range of 5 mm to 20 mm.

[0062] Therefore, the size of the first magnetic material or the size of the second magnetic material (in the range of 5 mm to 20 mm) can provide improved contact with the user's skin while still being minimally noticeable on the user's skin.

[0063] Attachment components may include springs.

[0064] A spring is advantageous because it helps maintain the distance between the first magnetic material and the magnet. The spring can be any type of spring, such as a disc spring, star spring, helical spring, compression spring, or tension spring. The attachment member can include multiple springs. Multiple springs can include any one or any combination of disc springs, star springs, helical springs, compression springs, or tension springs. The attachment member can be any other attachment member, such as an adhesive, like glue. The attachment member can be any conventional and commercially available attachment member.

[0065] The hearing device can be a headset. The headset can include at least earpieces and a headband. A first magnetic material for the electrodes can be disposed on a first surface of the earpieces. The first surface of the earpieces can be configured to be disposed on the user's skin during use. Attachment members for the magnets and electrodes can be disposed within the earpieces.

[0066] Therefore, when a user wears the headphones and while the user is performing other activities (such as listening to music), the headphones can record the user's electrical activity. Advantageously, the first magnetic material of the electrodes is arranged on the first surface of the headphones, because the headphones allow or at least facilitate contact between the electrodes and the user's skin. Advantageously, the attachment members for the magnets and electrodes are arranged within the headphones, because the attachment members for the magnets and electrodes can be protected by the headphones and comfortably carried by the user. The hearing device can be a binaural headphone, hearing aid, headphones, earphone, hearing aid, personal sound amplification product (PSAP), over-the-counter (OTC) hearing device, hearing protection device, integrated hearing device, custom-made hearing device, or another head-worn hearing device.

[0067] Headphones may include multiple electrodes, for example, four electrodes, arranged across a first surface of the headphones.

[0068] Advantageously, the headset includes multiple electrodes (e.g., four electrodes) arranged across a first surface of the headset, because multiple electrodes can improve the recording of electrical activity. Therefore, this allows for improved electrical activity, such as recordings of electrical activity obtained from different electrodes in conjunction. The multiple electrodes can be similar to each other. The multiple electrodes do not need to be similar to each other. For example, they can include different types of first magnetic materials, or different types of second magnetic materials, etc. Multiple electrodes can also allow for the recording of different types of electrical activity.

[0069] The present invention relates to various aspects, including the electrodes and hearing devices described above and below, and the corresponding electrode portions and hearing device portions, each electrode portion and hearing device portion having one or more benefits and advantages described in conjunction with the previously mentioned aspects, and each electrode portion and hearing device portion having one or more embodiments corresponding to the embodiments described in conjunction with the previously mentioned aspects and / or disclosed in the appended claims. Attached Figure Description

[0070] The above and other features and advantages will become apparent to those skilled in the art from the following detailed description of exemplary embodiments thereof with reference to the accompanying drawings, wherein: Figure 1 A side view of an exemplary electrode including a first magnetic material is schematically shown.

[0071] Figure 2 A side view of another exemplary electrode, comprising a first magnetic material and a second magnetic material, is schematically shown.

[0072] Figure 3 A perspective view of another exemplary electrode, comprising a first magnetic material and a second magnetic material, is schematically shown.

[0073] Figure 4a The schematic diagram shows a top view of an exemplary wearable device including two electrodes, each of which includes a first magnetic material.

[0074] Figure 4b Schematic illustration Figure 4a The image shows a cross-sectional view of the wearing device.

[0075] Figure 5a The illustration shows a front view of an exemplary headset including a headband and two earpieces.

[0076] Figure 5b The schematic diagram shows a device including four electrodes. Figure 5a The image shows an internal view of the right earpiece. Detailed Implementation

[0077] Various embodiments are described below with reference to the accompanying drawings. The same reference numerals always denote the same elements. Therefore, the same elements will not be described in detail with respect to the description of each drawing. It should also be noted that the drawings are intended only to facilitate the description of the embodiments. The drawings are not intended as an exhaustive description of the claimed invention or as a limitation on the scope of the claimed invention. Furthermore, the illustrated embodiments do not need to have all the aspects or advantages shown. Aspects or advantages described in conjunction with a particular embodiment are not necessarily limited to that embodiment and can be practiced in any other embodiment, even if not so stated or explicitly described.

[0078] Figure 1A side view of an exemplary electrode 100 is schematically shown. The electrode 100 is configured to be disposed on a user's skin for recording electrical activity. The electrode 100 includes a first magnetic material 110. The first magnetic material 110 extends along a first plane XY. The first magnetic material 110 includes a first surface 112. The first surface 112 is configured to be disposed on the user's skin. The electrode 100 also includes a magnet 120. The magnet 120 is disposed at a distance D from the first magnetic material 110 such that the first magnetic material 110 and the magnet 120 magnetically interact. The electrode 100 also includes an attachment member 130. The attachment member 130 is disposed in contact with the first magnetic material 110 and the magnet 120 to maintain the distance D between the first magnetic material 110 and the magnet 120. The first magnetic material 110 may also include a second surface 114. The second surface 114 may be disposed opposite the first surface 112. The magnet 120 may include the first surface 122. The first surface 122 of the magnet 120 may face the second surface 114 of the first magnetic material 110. The distance D may correspond to the distance between the first surface 122 of the magnet 120 and the second surface 114 of the first magnetic material 110 along a direction Z extending perpendicular to the first plane XY. The first magnetic material 110 may include a second pattern 150 at the first surface 112. The second pattern 150 may include protrusions. Alternatively or in combination, the second pattern 150 may include recesses. The pattern 150 may include any or any combination of shapes, lines, or dots.

[0079] Figure 2 A side view of another exemplary electrode 100 is schematically shown. Electrode 100 may also include a second magnetic material 140. The second magnetic material 140 may extend along a first plane XY. The second magnetic material 140 may include a first surface 142. The second magnetic material 140 may include a second surface 144. The second surface 144 may be arranged opposite the first surface 142. The first surface 142 of the second magnetic material 140 may be configured to be disposed on a user's skin. The second surface 144 of the second magnetic material 140 may be configured to magnetically interact with a magnet 120. The second surface 144 of the second magnetic material 140 may be configured to attach to the first surface 112 of the first magnetic material 110. The second magnetic material 140 may include a first pattern 150 at the first surface 142. The first pattern 150 may include protrusions. Alternatively or in combination, the first pattern 150 may include recesses. Figure 2The diagram illustrates a second magnetic material 140 including a first pattern 150 at a first surface 142. The first pattern 150 may include protrusions. Alternatively or in combination, the first pattern 150 may include recesses. The pattern 150 may include any or any combination of shapes, lines, or dots.

[0080] Figure 3 A perspective view of yet another exemplary electrode 100 is schematically shown. Electrode 100 includes a first magnetic material 110. The first magnetic material 110 extends along a first plane XY. The first magnetic material 110 includes a first surface 112. The first surface 112 of the first magnetic material 110 is configured to be disposed on a user's skin. Figure 3 Electrode 100 is shown to also include a second magnetic material 140. The second magnetic material 140 may extend along a first plane XY. The second magnetic material 140 may include a first surface 142. Electrode 100 also includes a magnet 120. The magnet 120 may include the first surface 122. An attachment member 130 is arranged to contact the first magnetic material 110 and the magnet 120 to maintain a distance D between the first magnetic material 110 and the magnet 120.

[0081] Figure 3 A second magnetic material 140 is shown including a first pattern 150 at a first surface 142. The first pattern 150 may include protrusions. Alternatively or in combination, the first pattern 150 may include recesses. A first magnetic material 110 may include a second pattern 150 at a first surface 112. The second pattern 150 may include protrusions. Alternatively or in combination, the second pattern may include recesses. Pattern 150 may include any or any combination of shapes, lines, or dots. The first magnetic material 110 may have a circular shape, such as a circle. The second magnetic material 140 may have a circular shape, such as a circle. The magnet 120 may have a circular shape, such as a circle.

[0082] The second magnetic material 140 may have the same dimensions as the first magnetic material 110 and / or magnet 120. The second magnetic material 140 may be smaller than the first magnetic material 110 and / or magnet 120. The second magnetic material 140 may be larger than the first magnetic material 110 and / or magnet 120.

[0083] The first magnetic material 110 may have the same dimensions as the second magnetic material 140 and / or the magnet 120. The first magnetic material 110 may be smaller than the second magnetic material 140 and / or the magnet 120. The first magnetic material 110 may be larger than the second magnetic material 140 and / or the magnet 120.

[0084] Magnet 120 may have the same dimensions as the second magnetic material 140 and / or the first magnetic material 110. Magnet 120 may be smaller than the second magnetic material 140 and / or the first magnetic material 110. Magnet 120 may be larger than the second magnetic material 140 and / or the first magnetic material 110.

[0085] Figure 4a and Figure 4b A schematic top view and cross-sectional view of an example of a wearing device 200 are shown. The wearing device 200 is in the form of a hearing device 300. The wearing device 200 is configured to be worn by a user. The wearing device 200 includes electrodes 100. Figure 4a The wearing device 200 is shown to include two electrodes 100. A first magnetic material 110 of the electrodes 100 is disposed on a first surface 212 of the wearing device 200. The first surface 212 of the wearing device 200 is configured to be disposed on a user's skin. A magnet 120 and an attachment member 130 of the electrodes 100 are disposed in the wearing device 200. A distance D may correspond to the distance along direction Z between the first surface 122 of the magnet 120 and the second surface 114 of the first magnetic material 110. Direction Z may extend perpendicular to a first plane XY. The first magnetic material 110 of the electrodes 100 is disposed on the first surface 212 of the hearing device 200. The first surface 212 of the hearing device 200 is configured to be disposed on a user's skin. The first surface 312 of the earphone 310 of the hearing device 300 may be configured to be disposed on a user's skin during use. The magnet 120 and the attachment member 130 of the electrodes 100 are disposed in the hearing device 300. The magnet 120 of electrode 100 and the attachment member 130 can be arranged in the earphone 310. The distance D can correspond to the distance along direction Z between the first surface 122 of magnet 120 and the second surface 114 of first magnetic material 110. Direction Z can extend perpendicular to the first plane XY.

[0086] Figure 5a A schematic front view of an exemplary headset 300 is shown. The headset 300 may include at least earpieces 310 and headband 320. Figure 5a The diagram shows a headset comprising two earpieces 310. A first magnetic material 110 of electrodes 100 may be disposed on a first surface 312 of the earpieces 310. The first surface 312 of the earpieces 310 may be configured to rest on the user's skin during use. Magnets 120 and attachment members 130 of the electrodes 100 may be disposed within the earpieces 310. The electrodes 100 disposed on the first surface 312 of the earpieces 310 may be at the same level as the first surface 312 of the earpieces 310. Alternatively, the electrodes 100 may protrude relative to the first surface 312 of the earpieces 310, such as... Figure 5aAs shown. The headset 300 may include a plurality of electrodes 100 arranged across a first surface 312 of the headset 310.

[0087] Figure 5b The headset 300 shown includes multiple electrodes 100. The multiple electrodes 100 may be arranged across a first surface 312 of the headset 310. The multiple electrodes 100 may be four electrodes 100.

[0088] Although certain features have been shown and described, it should be understood that these features are not intended to limit the claimed invention, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the claimed invention. Therefore, the specification and drawings are to be regarded as illustrative rather than restrictive. The claimed invention is intended to cover all alternatives, modifications, and equivalents.

[0089] Item List 1: 1. An electrode (100) configured to be disposed on a user's skin for recording electrical activity, the electrode (100) comprising: A first magnetic material (110) extends along a first plane (XY) and includes a first surface (112) configured to be disposed on a user's skin. A magnet (120) is positioned at a distance (D) from the first magnetic material (110), such that the first magnetic material (110) and the magnet (120) interact magnetically; and The attachment member (130) is arranged to contact the first magnetic material (110) and the magnet (120) to maintain a distance (D) between the first magnetic material (110) and the magnet (120).

[0090] 2. The electrode (100) according to item 1, wherein the first magnetic material (110) further includes a second surface (114) arranged opposite to the first surface (112), wherein the magnet (120) includes a first surface (122) facing the second surface (114) of the first magnetic material (110), and wherein the distance (D) corresponds to the distance between the first surface (122) of the magnet (120) and the second surface (114) of the first magnetic material (110) along a direction (Z) extending perpendicular to the first plane (XY).

[0091] 3. The electrode (100) according to item 1 or 2, wherein the electrode (100) further comprises a second magnetic material (140) extending along a first plane (XY) and including a first surface (142) and a second surface (144), wherein the second surface (144) is arranged opposite to the first surface (142), wherein the first surface (142) of the second magnetic material (140) is configured to be disposed on the user's skin, wherein the second surface (144) of the second magnetic material (140) is configured to magnetically interact with the magnet (120) and be attached to the first surface (112) of the first magnetic material (110).

[0092] 4. The electrode (100) according to item 3, wherein the second magnetic material (140) includes a first pattern (150) located on the first surface (142), wherein the first pattern (150) includes protrusions and / or depressions.

[0093] 5. The electrode (100) according to any of the preceding items, wherein the first magnetic material (110) includes a second pattern (150) located on the first surface (112), wherein the second pattern (150) includes protrusions and / or depressions.

[0094] 6. The electrode (100) according to item 4 or 5, wherein the first pattern and / or the second pattern (150) includes any one of the shapes, lines or dots or any combination thereof.

[0095] 7. The electrode (100) according to any one of items 3-6, wherein the first surface (112) of the first magnetic material (110) includes a notch, and wherein the second surface (144) of the second magnetic material (140) includes a corresponding protrusion, wherein when the second surface (144) of the second magnetic material (140) is magnetically attached to the first surface (112) of the first magnetic material (110), the protrusion of the second surface (144) of the second magnetic material (140) is accommodated in the notch of the first surface (112) of the first magnetic material (110).

[0096] 8. The electrode (100) according to any one of items 3-7, wherein the first magnetic material (110) and / or the second magnetic material (140) includes a coating layer covering at least the first surface (112, 142) of the respective magnetic material (110, 140).

[0097] 9. An electrode (100) according to any one of items 3-8, wherein the first magnetic material (110) and / or the second magnetic material (140) have a circular shape, such as a circle.

[0098] 10. An electrode (100) according to any one of items 3-9, wherein the thickness of the first magnetic material (110) and / or the thickness of the second magnetic material (140) along the direction (Z) is in the range of 0.2 mm to 0.6 mm.

[0099] 11. An electrode (100) according to any one of items 3-10, wherein the size of the first magnetic material (110) and / or the size of the second magnetic material (140) along the first plane (XY) is in the range of 5 mm to 20 mm.

[0100] 12. The electrode (100) according to any of the preceding items, wherein the attachment member (130) includes a spring.

[0101] 13. A wearable device (200) configured for wear by a user, the wearable device (200) including an electrode (100) according to any of the preceding items, wherein a first magnetic material (110) of the electrode (100) is disposed on a first surface (212) of the wearable device (200), wherein the first surface (212) of the wearable device (200) is configured to be disposed on the user's skin, wherein a magnet (120) of the electrode (100) and an attachment member (130) are disposed in the wearable device (200).

[0102] 14. The wearing device (200) according to item 13, wherein the wearing device (200) is an earphone (300), the earphone including at least an earphone (310) and a headband (320); wherein a first magnetic material (110) of an electrode (100) is disposed on a first surface (312) of the earphone (310), wherein the first surface (312) of the earphone (310) is configured to be disposed on the user's skin in use, wherein the magnet (120) and the attachment member (130) of the electrode (100) are disposed in the earphone (310).

[0103] 15. The wearing device (200) according to item 14, wherein the headphones (300) include a plurality of electrodes (100), such as four electrodes (100), arranged across a first surface (312) of the headphones (310).

[0104] Project List 2: 1. A hearing device (300) configured for wear by a user, the hearing device (300) including electrodes (100) configured to be disposed on the user's skin for recording electrical activity, the electrodes (100) comprising: A first magnetic material (110) extends along a first plane (XY) and includes a first surface (112) configured to be disposed on a user's skin. A magnet (120) is positioned at a distance (D) from the first magnetic material, such that the first magnetic material (110) and the magnet (120) magnetically interact; and The attachment member (130) is arranged to contact the first magnetic material (110) and the magnet (120) to maintain a distance (D) between the first magnetic material (110) and the magnet (120). The first magnetic material (110) of the electrode (100) is disposed on the first surface (212) of the hearing device (300), wherein the first surface (212) of the hearing device (300) is configured to be disposed on the user's skin, wherein the magnet (120) of the electrode (100) and the attachment member (130) are disposed in the hearing device (300).

[0105] 2. The hearing device (300) according to item 1, wherein the first magnetic material (110) further includes a second surface (114) arranged opposite to the first surface (112), wherein the magnet (120) includes a first surface (122) facing the second surface (114) of the first magnetic material (110), and wherein the distance (D) corresponds to the distance between the first surface (122) of the magnet (120) and the second surface (114) of the first magnetic material (110) along a direction (Z) extending perpendicular to the first plane (XY).

[0106] 3. The hearing device (300) according to item 1 or 2, wherein the electrode (100) further includes a second magnetic material (140) extending along a first plane (XY) and including a first surface (142) and a second surface (144), wherein the second surface (144) is arranged opposite to the first surface (142), wherein, in the presence of the second magnetic material (140), the first surface (142) of the second magnetic material (140) is configured to be disposed on the user's skin, wherein the second surface (144) of the second magnetic material (140) is configured to magnetically interact with the magnet (120) and be attached to the first surface (112) of the first magnetic material (110).

[0107] 4. The hearing device (300) according to item 3, wherein the second surface (144) of the second magnetic material (140) is configured to be attached to the first surface (112) of the first magnetic material (110) to cover the first surface (112) of the first magnetic material (110), such that the first surface (142) of the second magnetic material (140) is configured to be disposed on the user's skin.

[0108] 5. The hearing device (300) according to item 3 or 4, wherein the second magnetic material (140) includes a first pattern (150) located on a first surface (142), wherein the first pattern (150) includes protrusions and / or depressions.

[0109] 6. The hearing device (300) according to any of the preceding items, wherein the first magnetic material (110) includes a second pattern (150) located on a first surface (112), wherein the second pattern (150) includes protrusions and / or depressions.

[0110] 7. The hearing device (300) according to item 5 or 6, wherein the first pattern and / or the second pattern (150) includes any one or any combination of shapes, lines or dots.

[0111] 8. The hearing device (300) according to any one of items 3 to 7, wherein a first surface (112) of a first magnetic material (110) includes a notch, and wherein a second surface (144) of a second magnetic material (140) includes a corresponding protrusion, wherein when the second surface (144) of the second magnetic material (140) is magnetically attached to the first surface (112) of the first magnetic material (110), the protrusion of the second surface (144) of the second magnetic material (140) is accommodated in the notch of the first surface (112) of the first magnetic material (110).

[0112] 9. The hearing device (300) according to any one of items 3 to 8, wherein the first magnetic material (110) and / or the second magnetic material (140) includes a coating layer covering at least a first surface (112, 142) of the respective magnetic material (110, 140).

[0113] 10. The hearing device (300) according to any one of items 3 to 9, wherein the first magnetic material (110) and / or the second magnetic material (140) have a circular shape, such as a circle.

[0114] 11. A hearing device (300) according to any one of items 3-10, wherein the thickness of the first magnetic material (110) and / or the thickness of the second magnetic material (140) along the direction (Z) is in the range of 0.2 mm to 0.6 mm.

[0115] 12. A hearing device (300) according to any one of items 3-11, wherein the size of the first magnetic material (110) and / or the size of the second magnetic material (140) along the first plane (XY) is in the range of 5 mm to 20 mm.

[0116] 13. The hearing device (300) according to any of the preceding items, wherein the attachment member (130) includes a spring.

[0117] 14. A hearing device (300) according to any of the preceding items, wherein the hearing device (300) is a headset (300) comprising at least an earphone (310) and a headband (320), wherein a first magnetic material (110) of an electrode (100) is disposed on a first surface (312) of the earphone (310), wherein the first surface (312) of the earphone (310) is configured to be disposed on the user's skin during use, wherein a magnet (120) of the electrode (100) and an attachment member (130) are disposed in the earphone (310).

[0118] 15. The hearing device (300) according to item 14, wherein the headphones (300) include a plurality of electrodes (100), such as four electrodes (100), arranged across a first surface (312) of the headphones (310).

[0119] List of reference numerals

[0120] 100 electrodes

[0121] 110 First Magnetic Material

[0122] 112 First surface of the first magnetic material

[0123] 114 The second surface of the first magnetic material

[0124] 120 magnets

[0125] 122 The first surface of the magnet

[0126] 130 Attachment components

[0127] 140 Second Magnetic Material

[0128] 142 The first surface of the second magnetic material

[0129] 144 Second surface of the second magnetic material

[0130] 150 First Pattern / Second Pattern

[0131] 200 Wearable Devices

[0132] 212 First surface of the wearing device

[0133] 300 Hearing Devices / Headphones

[0134] 310 headphones

[0135] 312 The first surface of the headphones

[0136] 320 headband.

Claims

1. A hearing device (300) configured for wear by a user, the hearing device (300) including electrodes (100) configured to be disposed on the user's skin for recording electrical activity, the electrodes (100) comprising: A first magnetic material (110) extends along a first plane (XY), the first magnetic material (110) including a first surface (112) configured to be disposed on the user's skin. A magnet (120) is arranged at a distance (D) from the first magnetic material (110) such that the first magnetic material (110) and the magnet (120) interact magnetically. as well as An attachment member (130) is arranged to contact the first magnetic material (110) and the magnet (120) to maintain the distance (D) between the first magnetic material (110) and the magnet (120). The first magnetic material (110) of the electrode (100) is disposed on the first surface (212) of the hearing device (300), wherein the first surface (212) of the hearing device (300) is configured to be disposed on the user's skin, wherein the magnet (120) of the electrode (100) and the attachment member (130) are disposed in the hearing device (300).

2. The hearing device (300) according to claim 1, wherein, The first magnetic material (110) further includes a second surface (114) arranged opposite to the first surface (112), wherein the magnet (120) includes a first surface (122) facing the second surface (114) of the first magnetic material (110), and wherein the distance (D) corresponds to the distance between the first surface (122) of the magnet (120) and the second surface (114) of the first magnetic material (110) along a direction (Z) perpendicular to the first plane (XY).

3. The hearing device (300) according to claim 1 or 2, wherein, The electrode (100) further includes a second magnetic material (140) extending along the first plane (XY) and including a first surface (142) and a second surface (144), wherein the second surface (144) is arranged opposite to the first surface (142), wherein, in the presence of the second magnetic material (140), the first surface (142) of the second magnetic material (140) is configured to be disposed on the user's skin, wherein the second surface (144) of the second magnetic material (140) is configured to magnetically interact with the magnet (120) and be attached to the first surface (112) of the first magnetic material (110).

4. The hearing device (300) according to claim 3, wherein, The second surface (144) of the second magnetic material (140) is configured to attach to the first surface (112) of the first magnetic material (110) to cover the first surface (112) of the first magnetic material (110), such that the first surface (142) of the second magnetic material (140) is configured to be disposed on the user's skin.

5. The hearing device (300) according to claim 3 or 4, wherein, The second magnetic material (140) includes a first pattern (150) located on the first surface (142), wherein the first pattern (150) includes protrusions and / or depressions.

6. The hearing device (300) according to any one of the preceding claims, wherein, The first magnetic material (110) includes a second pattern (150) located on the first surface (112), wherein the second pattern (150) includes protrusions and / or depressions.

7. The hearing device (300) according to claim 5 or 6, wherein, The first pattern and / or the second pattern (150) includes any one or any combination of shapes, lines or dots.

8. The hearing device (300) according to any one of claims 3 to 7, wherein, The first surface (112) of the first magnetic material (110) includes a notch, and the second surface (144) of the second magnetic material (140) includes a corresponding protrusion, wherein when the second surface (144) of the second magnetic material (140) is magnetically attached to the first surface (112) of the first magnetic material (110), the protrusion of the second surface (144) of the second magnetic material (140) is accommodated in the notch of the first surface (112) of the first magnetic material (110).

9. The hearing device (300) according to any one of claims 3 to 8, wherein, The first magnetic material (110) and / or the second magnetic material (140) include a coating layer that covers at least the first surface (112, 142) of the respective magnetic material (110, 140).

10. The hearing device (300) according to any one of claims 3 to 9, wherein, The first magnetic material (110) and / or the second magnetic material (140) have a circular shape, such as a circle.

11. The hearing device (300) according to any one of claims 3 to 10, wherein, The thickness of the first magnetic material (110) and / or the thickness of the second magnetic material (140) along the direction (Z) is in the range of 0.2 mm to 0.6 mm.

12. The hearing device (300) according to any one of claims 3 to 11, wherein, The dimensions of the first magnetic material (110) and / or the second magnetic material (140) along the first plane (XY) are in the range of 5 mm to 20 mm.

13. The hearing device (300) according to any one of the preceding claims, wherein, The attachment member (130) includes a spring.

14. The hearing device (300) according to any one of the preceding claims, wherein, The hearing device (300) is a headset (300) comprising at least an earphone (310) and a headband (320), wherein the first magnetic material (110) of the electrode (100) is disposed on a first surface (312) of the earphone (310), wherein the first surface (312) of the earphone (310) is configured to be disposed on the user's skin during use, wherein the magnet (120) of the electrode (100) and the attachment member (130) are disposed in the earphone (310).

15. The hearing device (300) according to claim 14, wherein, The headset (300) includes a plurality of electrodes (100), such as four electrodes (100), arranged across the first surface (312) of the headset (310).

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