Miniaturized galvanic and electromagnetic stimulator produced by microfabrication

Abstract

The invention presents a stimulation module combining galvanic and electromagnetic stimulation, consisting of a housing having: two electrodes positioned to come into contact with the user's mastoids, connected to an electrical current source, one of said electrodes being active, the other of said electrodes being passive; at least one electromagnetic coil to generate non-contact electromagnetic stimulation, formed on an electrically insulating substrate, said substrate being associated with a heat sink; two separate compartments to house the electrical stimulation circuit connected to said electrodes on one hand and the electromagnetic stimulation circuit powering said coil on the other hand; an electronic circuit for controlling the electrical and electromagnetic stimulation sequences, including a Bluetooth module to receive remote control signals of the stimulation parameters.

Description

Title of the invention: Miniaturized galvanic and electromagnetic stimulator by microfabrication. Field of the invention

[0001] The present invention relates to the field of galvanic and electromagnetic stimulation devices for treating various vestibular and neurological disorders. These devices are designed to provide therapeutic stimulation through miniaturized electrodes and coils attached to the mastoids (area behind the ears). These electrodes deliver electrical and electromagnetic signals intended to rehabilitate or stabilize balance, alleviate neurodegenerative symptoms, or enhance immersion in virtual environments.

[0002] These devices are used, in particular, to treat vestibular disorders, pathologies affecting balance, such as Ménière's disease, chronic vertigo, and other dysfunctions of the vestibular system. They are also used for the rehabilitation of patients suffering from brain injuries, concussions, or other neurodegenerative diseases such as Parkinson's disease. These patients can benefit from stimulation to improve their perception of balance or reduce associated symptoms. Finally, electromagnetic and galvanic stimulation can also be used to synchronize sensory signals with immersive experiences, such as virtual reality (VR), and to prevent or reduce symptoms of disorientation.

[0003] Thus, these devices find applications in health systems, portable rehabilitation devices and even in wellness or sensory training uses via miniaturized electronic devices.

[0004] State-of-the-art galvanic and electromagnetic stimulation devices stimulate the nervous system using low-intensity electric currents or electromagnetic fields applied to specific areas of the body, particularly around the ears and head.

[0005] Vestibular galvanic stimulation uses electrodes placed behind the ears to send low-intensity direct currents through the mastoid muscles. The electrical current temporarily alters the way the brain interprets balance signals from the semicircular canals in the inner ear. It is used for the rehabilitation of patients suffering from vertigo, balance disorders, or disorientation. It is also being explored to improve posture and stability.

[0006] Some devices use electrodes mounted on a helmet for non-invasive skin stimulation, synchronized with other systems to adjust the signals according to body movements.

[0007] Electromagnetic stimulation uses coils that generate magnetic fields near the mastoids to induce non-contact stimulation of the underlying nerve tissue. The magnetic field penetrates the tissue and influences the neurons in the stimulated area. Electromagnetic stimulation is often used in conjunction with electrical stimulation, allowing for more precise interaction with nerve structures.

[0008] In addition to the treatment of vestibular disorders, this technique is used for neurological rehabilitation, for example in patients who have suffered brain injuries.

[0009] Some devices integrate both types of stimulation, such as galvanic and electromagnetic stimulators (GVS / GEMS), and include control modules to adjust stimulation parameters in real time. They may include motion sensors (IMU) to synchronize stimulation with the user's movements and thus optimize the therapeutic effect.

[0010] The electrodes for GVS deliver controlled currents while the electromagnetic coils generate fields for gentler, non-invasive stimulation. These devices are equipped with embedded computer systems to monitor and adjust the stimuli according to individual needs and data collected on the patient's condition.

[0011] Some recent devices include motion sensors such as accelerometers and gyroscopes to track head movements and adjust stimulation accordingly. Some devices also capture physiological data, such as brain or muscle activity, to personalize stimulation in real time.

[0012] Users can adjust stimulation levels from specific mobile applications or software, allowing for the personalization of therapies according to preferences or medical recommendations.

[0013] Current devices use wireless induction charging and are wrapped in biocompatible materials such as silicone for prolonged use without discomfort or skin reaction. State of the art

[0014] Prior art is known patent application WO202315691 which describes a galvanic vestibular stimulation module comprising: i. a galvanic stimulator configured to send an electrical stimulation signal to a plurality of electrodes, ii. a recording module configured to measure electrophysiological activity, preferably selected from electrical brain activity, eye movement, muscle activity, and head or body position, iii. a signal processor configured to modify the electrical stimulation signal based on the measured electrophysiological activity.

[0015] US patent 9339642B1 is also known, describing a therapeutic treatment system based on electrodes for stimulating tissues to achieve a physiological effect, comprising: - a plurality of current sources, each current source having a positive output and a negative output and each being configured to provide a first current; - a plurality of stimulation electrodes electrically connected to a plurality of current sources such that at least one pair of stimulation electrodes shares at least one output from at least one of the current sources, the stimulation electrodes being configured to deliver electrical energy to a patient's tissue at the first current; - at least one sentinel electrode; and a first voltage monitor configured to monitor a first voltage between at least the sentinel electrode and at least one of the plurality of stimulation electrodes.

[0016] Patent EP3344200B1 describes a Galvanic Vestibular Stimulation (GVS) Module, comprising two electrodes, two earphones each comprising one of the first and second electrodes, and a controller comprising a waveform generator configured to deliver a modulated electrical signal to a subject via transdermal electrical stimulation through the first and second electrodes. The modulated electrical signal comprises an amplitude and a carrier frequency modulated on the basis of a waveform with a modulation frequency that is lower than the carrier frequency, the carrier frequency being greater than 3 kilohertz (kHz). The first and second electrodes are configured to be inserted into a respective ear canal of the subject and configured to deliver the modulated electrical signal to the subject via GVS. Disadvantage of prior art

[0017] Prior art solutions are poorly suited for use by users and require expert intervention for placement on the patient's skull. Furthermore, the positioning of the multiple electrodes is delicate and sometimes leads to faulty contact, preventing the correct application of GVS stimulation signals. Solution provided by the invention

[0018] To overcome these drawbacks, the invention relates to a stimulation module combining galvanic and electromagnetic stimulation, consisting of a housing having: • Two electrodes positioned to make contact with the user's mastoids, connected to an electrical current source, one of said electrodes being active, the other of said electrodes being passive • at least one electromagnetic coil for generating non-contact electromagnetic stimulation, formed on an electrically insulating substrate, said substrate being associated with a heat sink • two separate compartments to house the electrical stimulation circuit connected to said electrodes on the one hand and the electromagnetic stimulation circuit powering said coil on the other • an electronic control circuit for electrical and electromagnetic stimulation sequences, including a Bluetooth module to receive remote control signals for stimulation parameters.

[0019] Advantageously, the module according to the invention further comprises: - a circuit for detecting the quality of contact between said electrodes and the user's skin, which controls the interruption of the electrical stimulation circuit in the event of non-compliant contact. - And / or a temperature sensor to stop stimulation if a threshold value is exceeded - And / or a microcontroller controlling the reset of the stimulation sequence based on the detection of malfunctions - And / or an inertial circuit including an accelerometer and a three-axis gyroscope connected to said electronic circuit, controlled to adjust the sequences of electrical and electromagnetic stimulation according to the movements of the user's head.

[0020] Preferably, the electronic circuit includes a microcontroller controlled by a real-time synchronization and modulation program for galvanic and electromagnetic stimulation, according to the stimulation profiles predefined by the user via a mobile application.

[0021] Advantageously, said housing is covered by a silicone sleeve.

[0022] Detailed description of a non-limiting example of embodiment

[0023] The present invention will be better understood upon reading the following description, concerning a non-limiting example of an embodiment, illustrated by the accompanying drawings where: - Figure [Fig. 1] represents a schematic side view of a device support according to the invention - Figure [Fig.2] represents a schematic perspective view of a device support according to the invention - Figure [Fig.3] represents a schematic perspective view of a variant of device support according to the invention. - Figure [Fig.4] represents a schematic diagram of the electronic circuit of the device according to the invention. General principle of the invention

[0024] The invention relates to an electrical and electromagnetic stimulation module consisting of a substantially parallelepiped-shaped housing covered in silicone, and having two conductive electrical electrodes on its face that comes into contact with the user's skin. The user is equipped with two modules positioned on their skull by a support having two slots positioned to make contact with the user's mastoid muscles. Module support

[0025] Fig. 1 and Fig. 2 represent a side and perspective view of an example embodiment, consisting of a piece made of elastically deformable flexible material, having a hook (1) in the general shape of "C" to allow attachment around the ear, with an enlarged area (2) forming a flexible shell into which an electronic module described below can be inserted.

[0026] A cord (4) joins the right and left hooks and runs along the back of the head at the nape of the neck to ensure positioning on the user's head. This cord (4) forms a loop whose ends (5) meet and terminate in a knot (6) allowing the length of the cord (4) to be adjusted and the assembly fitted to the user's head.

[0027] Fig. 3 illustrates an alternative embodiment where the modules (3) are housed in two shells (10) connected by flexible hoops (11, 12). Description of a module (3)

[0028] The modules (3) constitute stimulation devices that combine both galvanic and electromagnetic stimulation for therapeutic or rehabilitation applications. Each module (3) has two electrodes placed, when the system is worn by the user, on the mastoid processes (behind the ears) to deliver a direct current to stimulate the vestibular nerves. This stimulation can be adjusted remotely via the onboard control system.

[0029] Miniaturized electromagnetic coils are integrated into the module (3). They are manufactured using microfabrication techniques in a cleanroom to ensure contactless stimulation, which allows for gentler and more targeted action on the areas to be treated.

[0030] The module (3) is equipped with a Bluetooth module, allowing the user or practitioner to control the stimulation parameters remotely, which offers great flexibility in the settings and personalization of treatments.

[0031] An induction-rechargeable battery eliminates the need to use wired connectors, thus ensuring extended use and greater freedom of movement for the user.

[0032] The combination of galvanic and electromagnetic stimulation offers versatility in therapeutic applications, whether for vestibular disorders, neurological disorders or for virtual reality applications.

[0033] The integration of Bluetooth allows for real-time adjustment of parameters, improving the efficiency and personalization of therapies. Galvanic Electrical Stimulation (GVS)

[0034] Two electrodes placed behind the ear serve as entry points for the galvanic current, one active and the other passive. The device allows the intensity of the stimulation to be controlled in real time, via the multifunction button or the mobile application, to adapt to the needs of each user. The intensity limit is programmed to prevent overstimulation, ensuring maximum safety. An integrated safety algorithm detects changes in the quality of electrode contact or sudden movements, and adjusts or temporarily interrupts the stimulation if a problem occurs.

[0035] Using a mobile application, the user can create and save several stimulation profiles adapted to different uses (for example, low intensity for transport, moderate intensity for virtual reality). These profiles can be easily activated, allowing for rapid customization according to the environment or therapeutic objective. Galvanic Electromagnetic Stimulation (GEMS)

[0036] The coil has a planar spiral or micro-winding solenoid shape to maximize magnetic field production in a confined space. A planar spiral allows for good focusing and a more uniform field. It is made of copper or aluminum, used in microfabrication for their high conductivity, on a thermally stable silicone or silicon oxide substrate suitable for cleanroom processing. Cooling systems

[0037] The coating will use a thermally conductive material, such as polymers or thermal ceramics, which dissipates heat towards the skin without requiring additional components. A micro-fin-shaped structure, produced by microfabrication, will increase the heat exchange surface area. These Microstructures improve heat dissipation by maximizing contact with ambient air or skin. By incorporating materials with high thermal capacity, such as graphene or doped carbon, the coating could absorb heat fluctuations produced during stimulation, particularly during electromagnetic stimulation.

[0038] The electrical stimulation and electromagnetic stimulation circuits are placed in separate compartments of the device, each optimized to avoid electromagnetic interference. This physical isolation reduces the risk of electromagnetic "noise." Insulating materials (such as polymer coatings) are used to encapsulate each circuit, minimizing unwanted capacitive or inductive coupling between them.

[0039] : Each circuit has its own regulated power supply, ensuring that the The power delivered for electrical stimulation does not interfere with that of electromagnetic stimulation. This separation allows for specific power regulation for each type of stimulation.

[0040] A central microcontroller can synchronize the signals to ensure that the two types of stimulation operate without overlapping or interfering. For example, the electrical stimulation could be pulsed at specific intervals to avoid any conflict with the electromagnetic pulses.

[0041] The galvanic stimulation electrodes and the electromagnetic coils are designed to operate independently. The coil is calibrated to generate an electromagnetic field without affecting the electrodes.

[0042] The operating frequencies of each circuit are defined in such a way as to reduce interference. For example, the electromagnetic circuits could operate at a different frequency than that used by the galvanic stimulation circuits in order to reduce any interaction. Embedded computing

[0043] The electronic circuit includes an ESP32™ or STM32™ type microcontroller with sufficient processing capabilities and Bluetooth communication. It includes flash memory (minimum 512 KB) for storing the latest stimulation parameters, as well as a history of recent parameters for monitoring.

[0044] A BLE module integrated into the microcontroller (as on FESP32) to minimize power consumption. It will provide communication with PC software for configuration, recording, and retrieval of stimulation data.

[0045] A high-precision digital-to-analog converter (DAC) for generating the analog stimulation signals required for GVS and GEMVS. This component is essential for fine control of the intensity and frequency of the stimulation signals.

[0046] To retain a large volume of stimulation data (for example, historical settings and user configurations), 4 GB of storage is integrated via an eMMC chip, providing fast and durable access to the data.

[0047] Minimalist buttons on the device allow you to start, stop, and reset the stimulation without using PC software. A multi-color LED indicates the Bluetooth connection status, stimulation activity, and battery life.

[0048] A biocompatible silicone casing protects the electronics and minimizes the risk of skin reactions during prolonged use, with easy visual identification of the orientation.

[0049] Integrated system and interoperability with PC software

[0050] The device connects to the PC via Bluetooth, allowing the dedicated software to send stimulation parameters or retrieve recorded data. The BLE connection ensures low latency for real-time synchronization during stimulation sessions.

[0051] The microcontroller stores the last stimulation parameters so that the user can resume an identical session without reconfiguration. The configurations are also saved for recurring sessions, thus ensuring consistency of results.

[0052] The PC software allows the stimulation parameters (intensity, frequency, duration) to be sent to the device and the session data to be retrieved for analysis. It displays the current parameters and records the history, offering complete control for the user or the medical team. Security system and error management

[0053] To ensure user safety and device reliability, a safety and error management system is integrated. Its main features are as follows: • Automatic stimulation intensity limitation: The device has a maximum threshold for the current intensity sent to the electrodes. This limit is programmed into the microcontroller and prevents any stimulation beyond the user's tolerable level, thus reducing the risk of overstimulation or discomfort. • Contact detection: The system can detect the quality of contact between the electrodes and the skin. If the contact is insufficient (for example, if movement displaces the electrode), the device temporarily interrupts stimulation and alerts the user via a light notification (LED) or via the mobile application. • Temperature monitoring: A temperature sensor integrated into the housing continuously monitors the device's temperature. If the temperature reaches a critical threshold, the system shuts down. automatically reduces stimulation to avoid any risk of overheating, thus ensuring user safety. • Internal error detection and automatic reset: In case of malfunction (e.g., loss of Bluetooth connection, microcontroller error, or power surge), the device is programmed to detect the error and reset itself automatically. The device attempts to reconnect to the application and notifies the user if the problem persists. • Error logging: The microcontroller records every incident or malfunction in an internal log. This log can be accessed via the mobile app or when connected to a PC, allowing engineers to diagnose problems and improve system performance. To keep the device up to date and respond to technological developments, an OTA (Over-The-Air) software update system is integrated.

[0054] Here are the main features of this system: • Secure update: Each OTA update is digitally signed to guarantee the authenticity and integrity of the update file. Before installation, the device verifies the signature to ensure it comes from an authorized source, preventing any attempt at hacking or installing unauthorized software. • Secure transfer protocol: Updates are downloaded via Bluetooth using secure transfer protocols (e.g., AES 128 or 256 for data encryption), ensuring that the information exchanged cannot be intercepted or altered. • Non-blocking update process: The device is designed to perform updates in the background, allowing continued use without major interruption. If a restart is necessary, a warning is sent to the user, who can then schedule the restart for a convenient time. • Recovery mechanism in case of failure: If an update fails, the device automatically reverts to the previous software version, stored in a recovery partition. This "rollback" mechanism prevents software corruption and ensures the device's continued operation. • Notifications and control via the mobile app: The user is notified of the availability of new updates via the mobile app. They can initiate and monitor the update process directly from there. the application, which provides information on the status of the update (e.g., download, installation, restart required). Integration of Motion and Orientation Sensors (IMU)

[0055] The device can be equipped with an IMU (Inertial Measurement Unit) module comprising an accelerometer and a three-axis gyroscope. This module makes it possible to detect and measure the movements and orientation of the user's body in space in real time.

[0056] The IMU sensor detects rotational, tilting, and acceleration changes of the user. This information is continuously processed by the device's microcontroller, which analyzes the user's dynamics (for example, if the user suddenly turns their head or leans forward).

[0057] Based on the sensor data, the device adjusts the stimulation parameters, including intensity, frequency, or timing, to synchronize the artificial vestibular signals with the user's actual movements. For example: - When a head movement is detected, the device immediately adjusts the stimulation to compensate for the perception of movement, thus reinforcing the immersive or stabilizing effect to avoid cybersickness. - In the event of acceleration or braking (as in a vehicle or simulator), the device adapts the intensity of stimulation to mimic the perception of real acceleration and reduce the effects of disorientation. Optimizing desensitization therapy:

[0058] In the context of vestibular desensitization or rehabilitation, the IMU allows monitoring of the user's progress by identifying the types and intensities of movement to which they are exposed. The device can then gradually increase stimulation to improve the user's tolerance to specific movements, enabling personalized and progressive therapy. Filtering of unwanted movements:

[0059] The IMU module uses a filtering algorithm to ignore extraneous movements (small involuntary movements) and focus on meaningful movements. This ensures that the device only reacts to changes in posture or accelerations that require stimulation adaptation. Biocompatible silicone casing

[0060] The silicone used is medical grade, meeting ISO standards for implantable devices, thus ensuring that it is safe for prolonged contact with the skin without risk of irritation or allergic reaction. This material is suitable perfectly suited for direct use on the skin, even under conditions of prolonged wear.

[0061] The biocompatible silicone housing is molded to provide waterproof protection (IP67), preventing the ingress of dust and liquids. This waterproofing allows the device to be used in humid environments or in light rain, while also making it resistant to perspiration and splashes, which is essential for applications in mobile or outdoor conditions.

[0062] Silicone acts as a natural shock absorber, absorbing shocks and vibrations. Thanks to this protection, the device is less sensitive to physical impacts, thus ensuring greater durability, even in the event of a fall or during intense physical activity.

[0063] Silicone is a thermal insulator, protecting the internal components against moderate temperature variations. This allows the device to operate reliably in hot or cold environments, with an estimated operating temperature tolerance between -10°C and 50°C.

[0064] Silicone is naturally resistant to many chemicals, including cosmetics, sweat, and other substances to which it may be exposed during use. This allows the device to maintain its performance and integrity even during daily use. Sealed case

[0065] The housing is completely sealed using a screwless welding and assembly process. This sealing protects the internal electronic components from moisture and dust, while also making the housing more robust against repeated handling.

[0066] The device uses wireless (Bluetooth) technology for communication, and inductive charging could be considered, thus avoiding the need for exposed ports that could allow contaminants to enter. This enhances sealing and improves durability. User interface

[0067] The housing is equipped with minimal physical controls to facilitate rapid interaction:

[0068] o On / Off Function: By pressing and holding the button (for example, for 3 seconds), the user can turn the device on or off. A short vibration or a beep confirms each action.

[0069] o Intensity control: By briefly pressing the button, the user can increase the stimulation intensity in predefined increments (e.g., low, medium, high). A series of vibrations (1, 2, or 3) or multicolor LEDs indicate the selected intensity level.

[0070] o Stimulation mode: A double press allows switching between different stimulation modes (continuous stimulation, intermittent stimulation, etc.), adapted to different uses (motion sickness, cybersickness, training).

[0071] The housing includes LED indicators: • Connection indicator: A flashing LED indicates the Bluetooth connection status (fast flashing while searching for a connection, solid light when connected). • Battery indicator: The LED changes color (e.g., green for full battery, yellow for 50%, red for low battery) or flashes red when the battery reaches a critical level. • Active stimulation indicator: An LED light activates or flashes during stimulation, visually indicating that the device is in use. PC or Mobile interface via application

[0072] For more precise control and detailed monitoring, the device is paired with a PC or mobile application accessible via a Bluetooth connection. This application offers advanced features: • Dashboard: • Real-time status: Displays battery status, stimulation intensity, selected mode, and Bluetooth connection status. • Session history: Records each stimulation session with the parameters used (intensity, mode, duration). This history is accessible to allow users or healthcare professionals to track progress or make necessary adjustments.

[0073] Fine-tuning of the stimulation: • Intensity and frequency control: Allows for more precise manual adjustment of stimulation parameters (intensity and frequency) than the options on the device. Users can save specific stimulation profiles (e.g., for different types of use such as VR, transportation, training). • Stimulation mode selection: The user can select from several predefined and customizable modes (e.g., continuous stimulation, intermittent stimulation, motion-synchronized stimulation, etc.).

[0074] The application sends notifications to alert the user when the battery is low, when a software update is available, or in case of an error detection (such as poor electrode contact). This ensures that the user is always informed of the device's status.

[0075] The application offers the option to launch OTA updates to ensure that the device remains up-to-date with the latest security patches and functional improvements. Updates can be scheduled to be installed automatically or manually, with clear indications of the update status.

[0076] The application may include an interactive user guide that explains the different stimulation options and modes of use, as well as tips for maximizing the effects. Online support or a chatbot may also be integrated to answer frequently asked user questions. Schematic diagram of the electronic circuit

[0077] Figure [Fig.4] represents an example of a schematic diagram of the electronic circuit of the stimulation device combining galvanic and electromagnetic stimulation according to the invention.

[0078] The device is powered by an inductively rechargeable battery (16), allowing for extended use without the need for wired connectors. This inductive charging system enables continuous use while maintaining the device's water resistance and portability.

[0079] The device is equipped with a user interface (15), including controls and LED indicators to visualize the device's status (such as Bluetooth connection, battery level, and current stimulation status). This interface allows for quick and visual local control, in addition to the possibility of controlling it remotely via the mobile application or PC software.

[0080] The stimulation module provides electrodes positioned on the mastoids to send direct current (DC) electrical currents. These electrodes are controlled in intensity and frequency by a circuit (11) to adjust the galvanic stimulation according to therapeutic needs, via a microcontroller (10).

[0081] Electromagnetic stimulation is provided by miniaturized electromagnetic coils, manufactured in a cleanroom, capable of generating contactless magnetic fields according to an excitation signal delivered by a circuit (12) controlled by the controller (10) to provide gentle electromagnetic stimulation, in addition to galvanic stimulation, thus offering a more complete therapeutic approach.

[0082] The core of the system is a microcontroller (10) that manages the interactions between galvanic and electromagnetic stimulation. This microcontroller (10) receives data from the IMU sensor (13) to adjust the stimulation parameters according to the user's movements, and uses information sent via the Bluetooth interface (14) to adjust the stimulation in real time.

[0083] The device incorporates an IMU (Inertial Measurement Unit) sensor (13), which detects the movements and orientation of the user's head. This sensor provides crucial information for adapting the stimulation to the environment or the patient's movements, thereby improving therapeutic efficacy.

[0084] The device is equipped with a Bluetooth module (14) enabling wireless communication with PC software or a mobile application. This allows the user or therapist to customize and adjust stimulation parameters remotely, as well as monitor data in real time.

[0085] The device uses a combination of galvanic and electromagnetic stimulation to act on the vestibular nerves and other sensory systems, helping to treat balance disorders or neurological conditions. It is controlled via a simple user interface and Bluetooth communication for remote management. The IMU sensor adjusts the parameters according to detected movements, and the inductively rechargeable battery ensures extended, uninterrupted use.

[0086] This architecture makes the device versatile and portable, with an ability to adapt to the specific needs of the patient, while offering a user-friendly interface for local and remote control.

Claims

Demands

1. A stimulation module combining galvanic and electromagnetic stimulation, consisting of a housing having: • two electrodes positioned to make contact with the user's mastoids, connected to an electrical current source, one of said electrodes being active, the other of said electrodes being passive; • at least one electromagnetic coil for generating non-contact electromagnetic stimulation, formed on an electrically insulating substrate, said substrate being associated with a heat sink; • two separate compartments for housing the electrical stimulation circuit (11) connected to said electrodes on the one hand and the electromagnetic stimulation circuit (12) powering said coil on the other hand; • an electronic circuit for controlling the electrical and electromagnetic stimulation sequences, including a Bluetooth module (14) for receiving remote control signals of the stimulation parameters.

2. Stimulation module according to claim 1, characterized in that it further comprises a circuit for detecting the quality of contact between said electrodes with the user's skin, controlling the interruption of the electrical stimulation circuit (11) in the event of non-compliant contact.

3. Stimulation module according to claim 1, characterized in that it further comprises a temperature sensor to control the cessation of stimulation in the event of exceeding a threshold value.

4. Stimulation module according to claim 1, characterized in that it further comprises a microcontroller (10) controlling the reset of the stimulation sequence according to the detection of operating errors.

5. Stimulation module according to claim 1, characterized in that it further comprises an inertial circuit (14) including an accelerometer and a three-axis gyroscope connected to said microcontroller (10), controlled to adjust the electrical and electromagnetic stimulation sequences according to the movements of the user's head.

6. 16 Stimulation module according to claim 1, characterized in that said electronic circuit comprises a microcontroller (10) controlled by a real-time synchronization and modulation program for galvanic and electromagnetic stimulations, according to the stimulation profiles predefined by the user via a mobile application.

7. Stimulation module according to claim 1, characterized in that said housing is covered by a silicone envelope.

Images