Dry-wet separation electrode device and acquisition and stimulation integrated system

Abstract

According to the dry-wet separation electrode device and the collection and stimulation integrated system, the electrode device comprises the dry part and the wet part, the dry part and the wet part can be conveniently separated and installed, and after the dry part and the wet part are separated, only the fixing part provided with the multiple wet parts can be integrally placed into saline water to be soaked and then worn on the body surface of a subject. And then the dry part is placed into the mounting hole of the wet part through the electrode fixing piece to be fixed, so that one end of the electrode is in contact with the saline water holding piece which fully absorbs water, and the saline water electrode can be formed and can be used for carrying out electroencephalogram signal acquisition and / or electrical stimulation on a subject. Wherein the dry part is also provided with an active device, so that the function of an active electrode can be realized, and the active device is arranged in a device accommodating groove of the dry part mounting seat and is sealed, so that the active device can be prevented from being influenced by saline water, and the long-term stable work of the active device is kept. In an acquisition and stimulation integrated system, when the electrode position needs to be switched, the main part can be detached and moved to the required position, software cooperation is not needed, and the device is low in cost and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of electrode technology, specifically relating to a dry and wet separation electrode device and an integrated system for collecting stimulation. Background Technology

[0002] In the research and clinical application of stimulation mechanisms and closed-loop stimulation algorithms, the acquisition of electroencephalogram (EEG) signals during transcranial electrical stimulation (TCS) has become an increasingly urgent need. There is also a certain demand for EEG / EMG signal acquisition and electrical stimulation in the daily rehabilitation training of some patients. However, currently only a few advanced electrical stimulation devices or neurofeedback devices integrate stimulation electrodes and EEG electrodes, using software-controlled pathway switching to switch between electrical stimulation and EEG electrode functions. While these devices can achieve both EEG signal acquisition and electrical stimulation, they still have several shortcomings.

[0003] Firstly, in some high-end integrated EEG and electroencephalography (EEG) devices, to achieve high-density whole-brain coverage, more EEG monitoring electrodes are used to improve spatial resolution. To stimulate different brain regions, 64-channel or even 256-channel electrodes are necessary, meaning a large number of electrodes are required. Specialized software is needed to switch the stimulation locations. However, in practice, using conductive gel on electrode caps with 64 or more leads becomes extremely time-consuming and laborious. Dry electrodes, due to their inherent design, are generally large and difficult to achieve high density. Therefore, saline electrodes are commonly used for 64 or more leads. EEG electrode caps with 64 or more leads are also relatively expensive.

[0004] On the one hand, electrical stimulation, in most cases, doesn't require as many electrodes working simultaneously as EEG signal acquisition to improve spatial resolution; often, only a few electrodes are needed. On the other hand, in many scenarios, a large number of EEG electrodes may not be necessary. Using a 64-lead or higher electrode cap in such cases would be wasteful. Disc electrodes, being individual, can be applied one by one to the scalp when the number of electrodes is small, making them suitable for such situations. However, disc electrodes still have significant drawbacks, such as the need for manual pre-measurement, application of conductive gel, and additional adhesive tape for fixation.

[0005] If there were a device that still uses saline electrodes, but retains the advantages of convenient operation and high-density coverage of 64-lead or higher saline electrode caps, while also being able to switch to a solution with fewer electrodes and lower cost at any time, the cost of using such devices could be greatly reduced.

[0006] Secondly, to achieve high-quality EEG signal acquisition, active electrodes provide a better signal-to-noise ratio. Compared to traditional passive electrode devices, active electrode devices are typically equipped with a small active component electrically connected to the EEG electrodes, such as a small chip with electronic circuitry. This component performs preprocessing and analog-to-digital conversion on the EEG signals acquired by the electrodes and employs electrical shielding technology, thereby improving the quality and stability of the acquired EEG signals. Although active electrode devices have the above advantages, they are currently usually used in conjunction with conductive gel or dry electrodes to reduce the contact impedance between the skin and the electrodes. However, conductive gel is expensive to use and time-consuming to apply. It requires strict skin cleaning and degreasing, and when there are multiple active electrode devices on the EEG cap, the conductive gel needs to be applied to each one individually. Therefore, the preparation time before EEG acquisition is very long. While brine electrode devices exist that work with brine, offering greater convenience and speed compared to conductive paste, the brine electrode cap requires complete immersion in brine. Furthermore, the brine electrode device operates in a high-humidity, high-salinity environment. If an active electrode device is used, the active components, such as the chip, are easily affected and may be damaged or even fail in the brine environment, compromising the long-term stable operation of the active components. Therefore, there is currently no brine electrode cap that supports active electrode designs.

[0007] Thirdly, to avoid having to choose between electrical stimulation and signal acquisition functions at a single location, both EEG electrodes and stimulation electrodes need to be placed simultaneously at that location, and they must be very close together. Alternatively, the same electrode can be used for both EEG and stimulation. The former approach results in twice the electrode density, leading to extremely high costs and virtually no possibility of overlapping positions. The latter approach, currently the mainstream design, requires electrodes at the same location to switch between EEG and stimulation functions, making simultaneous operation impossible. This is based on current mainstream EEG electrode caps and electrodes. However, this method of sharing electrical stimulation and EEG electrodes has significant drawbacks. Since signal acquisition and electrical stimulation require different electrode materials, using non-polarized electrodes for high-quality signal acquisition in saline for electrical stimulation can cause electrode polarization, shortening electrode lifespan and further increasing equipment costs. Moreover, the circuit design and logic of this combined electrical stimulation and EEG approach are complex and can affect each other's performance. This approach cannot separate stimulation and acquisition; to ensure that each electrode can switch, each circuit needs its own acquisition and electrical stimulation circuitry. However, in many cases, the number of leads for electrical stimulation is not required, resulting in waste. Utility Model Content

[0008] This utility model is designed to solve the above-mentioned problems, and aims to provide an electrode device and integrated stimulation acquisition system that has a wider range of applications, lower equipment costs, and is easier to manufacture and use. The technical solution adopted by this utility model is as follows:

[0009] This utility model provides a dry-wet separation electrode device, which, together with a fixing part, constitutes a saline electrode device. The fixing part is used to fix multiple dry-wet separation electrode devices on the body surface of a subject. The electrode device has the following technical features: a dry part and a wet part for contacting saline solution. The dry part includes: a dry part mounting base with a device receiving groove; and an electrode assembly for signal acquisition and / or electrical stimulation, including an electrode, an active device, and an electrode fixing member. The active device is disposed in the device receiving groove, either sealed or unsealed. The wet part includes: a wet part mounting base for mounting the wet part on the fixing part, having a through mounting hole; and a saline solution retainer for absorbing and retaining saline solution. After absorbing saline solution, one end of the retainer contacts one end of the mounting hole, and the other end contacts the body surface of the subject. The electrode is detachably disposed in the mounting hole via the electrode fixing member, with one end of the electrode contacting the saline solution retainer.

[0010] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the electrode assembly further includes a lead wire extending from one side of the active device; the mounting hole is a second mounting hole; the dry mounting base also has a lead wire receiving groove and a first mounting hole respectively communicating with the device receiving groove; the lead wire extends to the outside through the lead wire receiving groove; the device receiving groove and the lead wire receiving groove can be sealed by injection; the electrode is fixed to the active device and passes through the first mounting hole.

[0011] The dry and wet separation electrode device provided by this utility model may also have the following technical features: the number of electrodes is one, which is a collection electrode or a stimulation electrode; the active device is located on a circuit board, which is embedded in the device receiving groove; the electrode is cylindrical and is fixed in the second mounting hole by the electrode fixing member; one end of the electrode is welded and fixed to the circuit board.

[0012] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the electrode includes a sampling electrode and a stimulation electrode; the active device includes a sampling active device and a stimulation active device (stimulation electronic device), which are fixed to the sampling electrode and the stimulation electrode, respectively; the lead wire includes a sampling lead wire and a stimulation lead wire, which are led out from one side of the sampling active device and the other side of the stimulation active device, respectively; the sampling lead wire and the stimulation lead wire are different colors and use different connectors to achieve a foolproof plugging and unplugging design, so as to connect to the corresponding signal acquisition circuit or stimulation circuit. The first mounting hole and the second mounting hole are both corresponding circular through holes; the sampling electrode is a hollow cylindrical tube and is fixed in the second mounting hole by the electrode fixing member; the stimulation electrode is cylindrical and its diameter is smaller than the inner diameter of the sampling electrode, nested inside the sampling electrode, and is separate from the sampling electrode and does not contact it.

[0013] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the active acquisition device and the active stimulation device are respectively located on a circuit board; the circuit board where the active acquisition device is located has a first through hole in the middle; one end of the acquisition electrode is welded and fixed to the circuit on the lower surface of the edge of the first through hole; the circuit board where the active stimulation device is located has a second through hole in the middle; the active stimulation electrode passes through the second through hole and is welded and fixed to the circuit on the upper surface of the edge of the second through hole; the active acquisition device and the circuit board where the active stimulation device is located are stacked and embedded in the device receiving groove.

[0014] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the electrode includes a collection electrode and a stimulation electrode; the active device includes a collection active device and a stimulation active device, which are fixed to the collection electrode and the stimulation electrode, respectively; the lead wire includes a collection lead wire and a stimulation lead wire, which are led out from one side of the collection active device and the other side of the stimulation active device, respectively; the collection electrode and the stimulation electrode are both cylindrical and arranged side by side.

[0015] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the active acquisition device and the active stimulation device are respectively located on a circuit board. The circuit board where the active acquisition device is located has two first through holes, and the circuit board where the active stimulation device is located has two second through holes corresponding to the first through holes. The acquisition electrode passes through one of the first through holes and is welded and fixed to the circuit on the lower surface of the edge of the first through hole. The stimulation electrode passes through one of the second through holes and is welded and fixed to the circuit on the upper surface of the edge of the second through hole. The component receiving part also includes a device receiving groove communicating with the electrode mounting hole, which matches the circuit board where the active acquisition device and the active stimulation device are located. The circuit board where the active acquisition device and the active stimulation device are located are stacked and embedded in the device receiving groove. The acquisition electrode also passes through another second through hole, and the stimulation electrode also passes through another first through hole.

[0016] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the wet part further includes a supporting and limiting member connected to the wet part mounting base, which has a receiving cavity; the brine retainer is a cylindrical sponge with a slit at one end for inserting the electrode; after absorbing brine, the brine retainer is fitted into the receiving cavity, and the end with the slit abuts against the end of the second mounting hole.

[0017] The dry and wet separation electrode device provided by this utility model may also have the following technical features: the electrode fixing component is any one of a drum spring, a magnetic component, or a snap-fit ​​component; the electrode fixing component is made of waterproof material or has a waterproof coating; and the cut is any one of a long strip cut, a circular cut, or a cross-shaped cut.

[0018] The dry-wet separation electrode device provided by this utility model may also have the following technical features: the collection electrode is a non-polarized electrode, and the stimulation electrode is a dedicated electrode for electrical stimulation, such as a polarized electrode.

[0019] This invention provides an integrated system for both electrical stimulation and signal acquisition. The system comprises: a saline electrode device for placement on the body surface of a subject, comprising multiple electrode components; an electrical stimulation module for cooperating with the saline electrode device to provide electrical stimulation; and a signal acquisition module for cooperating with the saline electrode device to acquire signals. The electrode components are any of the aforementioned dry / wet separation electrode devices. The electrical stimulation module and the signal acquisition module are independent of each other and are both modular designs, allowing for the addition or removal of leads as needed. The colors of the connection sockets between the circuit and the electrode device correspond to the lead wires; for example, the signal acquisition module corresponds to the signal acquisition wire, and the electrical stimulation module corresponds to the stimulation wire.

[0020] Functions and effects of utility models

[0021] According to the dry and wet separation electrode device and integrated acquisition and stimulation system provided by this utility model, the electrode device includes a dry part and a wet part. The wet part is mounted on a fixed part by a wet part mounting base. The electrode of the dry part is detachably installed in the mounting hole of the wet part mounting base through an electrode fixing member. Therefore, the dry part and the wet part can be easily separated and installed. After separation, only the fixed part with multiple wet parts can be immersed in saline solution for soaking. Then, it is worn on the subject's body surface. The dry part is then placed into the mounting hole of the wet part through the electrode fixing member, fixing the dry part and the wet part together. One end of the electrode is in contact with the saline solution retainer that has fully absorbed the saline solution, thus forming a saline electrode for acquiring EEG signals and / or stimulating the subject. The dry part also has an active device, thus realizing the function of an active electrode. The active device is placed in the device receiving groove of the dry part mounting base and does not come into contact with the saline solution, thus avoiding its influence by the saline solution and maintaining the long-term stable operation of the active device.

[0022] The advantage of existing high-density electrode caps lies in their high spatial resolution; for example, 256 leads can cover all sites in a 10⁻⁵ system. However, past electrode cap designs have always integrated the cap and electrodes, pre-assembled, with a one-to-one correspondence between sites and electrodes. Switching is impossible unless the cap is removed and reinstalled; for example, a 64-lead electrode cap has 64 sites and 64 electrodes. Especially with saline electrode cap designs, which require soaking, the electrodes are usually pre-assembled and fixed. Therefore, if low-lead electrode caps are used, many sites cannot be acquired or electrically stimulated. Using high-lead electrode caps is extremely costly. In the integrated acquisition and stimulation system of this invention, the use of a dry-wet separation electrode device also achieves the effect of separating the sites and electrodes. Therefore, multiple wet electrodes can be pre-assembled on the fixed part to form a pre-prepared high-density coverage. During use, the entire electrode can be installed to achieve high-density coverage, or the electrode can be installed on the wet electrodes at the corresponding positions according to the actual number of leads. If it is necessary to switch electrode positions during use, it is only necessary to remove the electrode from the unused position and move it to the wet electrode at the required position. Therefore, it is possible to achieve EEG signal acquisition and / or electrical stimulation of the entire brain region with a very small number of electrode devices.

[0023] The biggest advantage of saline electrodes lies in their speed and convenience in high-conductivity scenarios. Because the wet section is specifically designed for saline immersion, a single immersion ensures all sites are fully saturated with saline. In use, this invention simply requires inserting the dry electrode into the saline-holding section of the wet section to achieve electrical contact, thus preserving the advantages of saline electrode caps in high-density scenarios. Dry-wet separation and site separation also simplify site switching, offering advantages over traditional saline electrode caps.

[0024] The main cost of conventional high-density electrode caps lies in the electrodes and cables. The wet part is basically composed of inexpensive materials, while the dry part contains electrodes and electronic components. By separating the dry and dry parts, the cost of use is significantly reduced in scenarios where not many electrodes are needed. At the same time, high-density, low-cost coverage is achieved through the wet part without increasing time costs.

[0025] Since the wet electrode covers all sites on the head and is labeled with corresponding locations, it can be easily identified and the brain regions to be tested can be switched simply by assembling and disassembling the electrode. This eliminates the need for complex software operations and the pre-measurement, glue application, and tape application required for disc electrodes. The test subject can even perform these procedures themselves. This invention combines the advantages of both saline electrodes and disc electrodes while avoiding their respective disadvantages. This greatly simplifies operation and allows for large-scale adoption in clinical applications and even among general consumers.

[0026] Because of the dry-wet separation, after removing the dry section, you can directly use a syringe or pipette to replenish the saline solution in the wet section through the through-hole in the middle. After replenishing the solution, insert the dry section back into the wet section until the impedance adjustment is complete.

[0027] In an integrated acquisition and stimulation system, the acquisition and stimulation circuits are designed independently and do not interfere with each other. Therefore, they can operate simultaneously or in a time-sharing manner. The modular design allows for the addition and removal of modules according to different scenarios, and the number of acquisition and stimulation modules does not need to be the same, maximizing flexibility to adapt to various situations. Attached Figure Description

[0028] Figure 1 This is a structural block diagram of the integrated stimulation acquisition system in Embodiment 1 of this utility model;

[0029] Figure 2 This is an example diagram of the integrated stimulation acquisition system implemented in Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the brine electrode device in Embodiment 1 of this utility model;

[0031] Figure 4 This is a structural breakdown of the dry-wet separation electrode device in Embodiment 1 of this utility model. Figure 1 ;

[0032] Figure 5 This is a structural breakdown of the dry-wet separation electrode device in Embodiment 1 of this utility model. Figure 2 ;

[0033] Figure 6 This is a cross-sectional view of the dry-wet separation electrode device in Embodiment 1 of this utility model;

[0034] Figure 7 This is an exploded view of the electrode assembly in Embodiment 1 of this utility model;

[0035] Figure 8 This is a schematic diagram of the elastic band in Embodiment 1 of this utility model;

[0036] Figure 9 This is an exploded view of the dry-wet separation electrode device in Embodiment 2 of this utility model;

[0037] Figure 10 This is an exploded view of the electrode assembly in Embodiment 2 of this utility model;

[0038] Figure 11 This is a structural diagram of the electrode assembly in Embodiment 3 of this utility model.

[0039] Figure label:

[0040] Integrated acquisition and stimulation system 1000; acquisition electrode module 200; stimulation electrode module 300; integrated control device 400; main control module 410; signal acquisition unit 420; filtering and amplification module 421; analog-to-digital conversion module 422; electrical isolation module 423; electrical stimulation control unit 430; electrical isolation module 431; stimulation drive module 432; output switch matrix 433; communication and control interface 441; isolated AC / DC module 442; emergency stop switch 443; isolated DC / DC module 444; saline electrode device 100; dry and wet separation electrode device 10; dry part 10A; wet part 10B; dry part mounting base 11; first disc part 111; first protrusion 112; device receiving groove 1121; lead wire receiving groove 1122; first mounting hole 113; electrode group Component 12; Electrode 121 for acquisition; Active device for acquisition 122; First through hole 1221; Stimulation electrode 123; Active device for stimulation 124; Second through hole 1241; Electrode isolator 125; Lead wire for acquisition 126; Lead wire for stimulation 127; Electrode fixing component 128; Electrode 1201; Active device 1202; Lead wire 1203; Electrode fixing component 1204; End cap 13; Support limiting component 14; Assembly hole 141; Receiving cavity 142; Saline solution retainer 15; Cutout 151; Wet part mounting base 16; Second disc portion 161; Second protrusion 162; Outer ring groove 1621; Barb 163; Second mounting hole 164; Identifier 18; Elastic fixing portion 20; Elastic band 21; Circular sheet portion 211; Mounting hole 2111; Long strip sheet portion 212. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following describes in detail the dry and wet separation electrode device and the integrated stimulation acquisition system of this utility model in conjunction with the embodiments and accompanying drawings.

[0042] <Example 1>

[0043] Figure 1 This is a structural block diagram of the integrated stimulation acquisition system in this embodiment. Figure 2 This is an example diagram illustrating the implementation of the integrated stimulation acquisition system in this embodiment.

[0044] like Figure 1 and Figure 2 As shown, the integrated acquisition and stimulation system 1000 of this embodiment includes an acquisition electrode module 200, a stimulation electrode module 300, and an integrated control device 400.

[0045] The acquisition electrode module 200 includes acquisition electrodes and active acquisition devices for acquiring electroencephalogram (EEG) or electromyogram (EMG) signals from the human body. Multiple acquisition electrode modules 200 may be used.

[0046] The stimulation electrode module 300 includes stimulation electrodes and active stimulation devices for applying electrical stimulation to the human body surface. Multiple stimulation electrode modules 300 may be used.

[0047] The integrated control device 400 is used to acquire signals from the acquisition electrode module 200 and to control multiple stimulation electrode modules 300. The integrated control device 400 includes a main control module 410, a signal acquisition unit 420 electrically connected to the main control module 410, and an electrical stimulation control unit 430, primarily used to achieve synchronization between these two units. Figure 2 As shown, the main control module 410 can be a microcontroller.

[0048] The signal acquisition unit 420 may include a filtering and amplification module 421, an analog-to-digital conversion module 422, and an electrical isolation module 423 connected in sequence, such as Figure 2 As shown, these modules can be implemented as corresponding circuits. The filtering and amplification module 421 is electrically connected to the acquisition electrode module 200, and the electrical isolation module 423 is electrically connected to the main control module 410. When there are multiple acquisition electrode modules 200, there can be multiple filtering and amplification modules 421, each connected to a different acquisition electrode module 200. Furthermore, multiple filtering and amplification modules 421 can be connected to the same digital conversion module 422 to achieve multi-channel signal acquisition. The signal acquisition unit 420 can provide multiple acquisition interfaces for multiple acquisition electrode modules 200.

[0049] The electrical stimulation control unit 430 may include an electrical isolation module 431, a stimulation drive module 432, and an output switch matrix 433 connected in sequence. For example... Figure 2 As shown, these modules can be implemented as corresponding circuits, with the stimulation driving module 432 being implemented using an FPGA. The electrical isolation module 431 is electrically connected to the main control module 410, and the output switch matrix 433 is electrically connected to multiple stimulation electrode modules 300, enabling multi-channel electrical stimulation control. The electrical stimulation control unit 430 can provide multiple stimulation interfaces for the multiple stimulation electrode modules 300. For easy differentiation, the stimulation interfaces and the acquisition interfaces can be distinguished by different colors or markings, or they can be connected to different connectors, which are then connected to the corresponding electrode modules.

[0050] In addition, such as Figure 2As shown, the integrated control device 400 may also have a communication and control interface 441 for communicating with external devices, such as computing and analysis equipment, transmitting the acquired data to the computing and analysis equipment for calculation, analysis, and visualization. The integrated control device 400 may use 220V AC mains power and accordingly has an isolated AC / DC module 442, an emergency stop switch 443, and an isolated DC / DC module 444 connected in sequence. The isolated AC / DC module 442 is also electrically connected to the main control module 410 to provide a stable power supply to the main control module 410, the signal acquisition unit 420, and the electrical stimulation control unit 430.

[0051] In alternative solutions, where synchronization requirements are not high, the signal acquisition unit 420 and the electrical stimulation control unit 430 can be connected to two different control modules, or the acquisition module 200 and the electrical stimulation module 300 can be set in two independent devices and connected to their respective control modules.

[0052] In this embodiment, the multiple acquisition electrode modules 200 and the multiple stimulation electrode modules 300 are all electrode modules that can be used with saline solution and are integrated into a saline electrode device, which can be, for example, an EEG cap or an EMG device. The following will use an EEG cap as an example for specific explanation.

[0053] Figure 3 This is a schematic diagram of the brine electrode device in this embodiment.

[0054] like Figure 3 As shown, the saline electrode device 100 includes multiple wet-dry separation electrode devices 10 and an elastic fixing part 20. The multiple wet-dry separation electrode devices 10 are used for signal acquisition and electrical stimulation at different locations on the body surface, and can be separated into wet and dry states during use, thus facilitating convenient use with saline solution. The elastic fixing part 20 provides multiple mounting holes so that the multiple wet-dry separation electrode devices 10 can be distributed and fixed at multiple predetermined locations on the human body surface.

[0055] Figure 4 This is a structural breakdown of the dry-wet separation electrode device in this embodiment. Figure 1 , Figure 5 This is a structural breakdown of the dry-wet separation electrode device in this embodiment. Figure 2 , Figure 6 This is a cross-sectional view of the dry-wet separation electrode device in this embodiment.

[0056] like Figures 4 to 6As shown, the dry-wet separation electrode device 10 includes a dry part 10A and a wet part 10B. The wet part 10B is used to contact the brine. During the preparation stage, the wet part 10B is completely immersed in the brine. The dry part 10A does not come into contact with the brine at all during the preparation stage, and the charged parts therein also do not come into contact with the brine during subsequent use.

[0057] The cadre 10A includes a cadre mounting base 11, an electrode assembly 12, and an end cap 13. The cadre 10A can be pre-assembled as follows: Figure 3 As shown in the figure.

[0058] The cadre mounting base 11 includes a first disc portion 111 and a first protrusion portion 112.

[0059] The first disc portion 111 is disc-shaped with a through first mounting hole 113 in the center. A first protrusion 112 protrudes outward from one surface of the first disc portion 111, and is generally irregularly shaped like a frame, having a portion resembling a rectangle and a portion resembling a strip. A device receiving groove 1121 is formed on the inner side of the rectangular frame portion, communicating with the first mounting hole 113. A lead receiving groove 1122 is formed on the inner side of the strip frame portion, communicating with a corner of the device receiving groove 1121.

[0060] The cadre mounting base 11 is made of an insulating and waterproof material, such as a one-piece molded plastic component.

[0061] Figure 7 This is an exploded view of the electrode assembly in this embodiment.

[0062] like Figure 7 As shown, the electrode assembly 12 includes a sampling electrode 121, a sampling active device 122, a stimulation electrode 123, a stimulation active device 124, an electrode isolation part 125, a sampling lead 126, a stimulation lead 127, and an electrode fixing member 128.

[0063] The acquisition electrode 121 is a non-polarized electrode to achieve high-quality EEG / EMG signal acquisition. For example, it can be a powdered silver / silver chloride electrode, or a silver electrode coated with a silver chloride layer, etc. The acquisition electrode 121 is a hollow cylindrical tube with a uniform diameter.

[0064] The active acquisition device 122 is used in conjunction with the acquisition electrode 121 to achieve active EEG or EMG signal acquisition. In this embodiment, it is mounted on a rectangular circuit board containing components such as an active amplifier circuit. The circuit board has a circular through-hole (denoted as the first through-hole 1221) in the middle, and the diameter of the first through-hole 1221 is larger than the diameter of the stimulation electrode 123. For example, the first through-hole 1221 can be located at the intersection of the two diagonals of the rectangular circuit board. A pad is formed on the lower surface of the circuit board where the active acquisition device 122 is located, at the edge of the first through-hole 1221. The pad matches the end of the acquisition electrode 121, and one end of the acquisition electrode 121 is soldered to the pad. The axial direction of the acquisition electrode 121 is perpendicular to the surface direction of the circuit board where the active acquisition device 122 is located.

[0065] The acquisition electrode 121 and the acquisition active device 122 are also the aforementioned acquisition electrode module.

[0066] The stimulation electrode 123 is a dedicated electrode for electrical stimulation, designed to withstand higher current stimulation and maintain a longer service life under electrical stimulation. For example, it can be a polarized electrode, specifically a platinum-titanium electrode, comprising a titanium substrate and a uniformly thick platinum layer formed on the outer surface of the titanium substrate. The stimulation electrode 123 is a solid, slender cylinder with an outer diameter smaller than the inner diameter of the acquisition electrode 121. Preferably, the length of the stimulation electrode 123 is greater than the length of the acquisition electrode 121. When assembled in the base 11, one end of the acquisition electrode 121 and one end of the stimulation electrode 123 extend outwards from the outer end of the protrusion 112, and the extension length of the stimulation electrode 123 is greater than the extension length of the acquisition electrode 121.

[0067] The active stimulation device 124 is used in conjunction with the stimulation electrode 123 to achieve specific electrical stimulation. In this embodiment, it is mounted on a corresponding rectangular circuit board. This circuit board has components such as an active amplification circuit, and its external dimensions are basically the same as those of the circuit board of the active acquisition device 122. It has a circular through-hole (denoted as the second through-hole 1241) in its center. The diameter of the second through-hole 1241 is approximately equal to or slightly larger than the diameter of the stimulation electrode 122. The second through-hole 1241 can, for example, be located at the intersection of the two diagonals of the rectangular circuit board. The stimulation electrode 122 is embedded in the second through-hole 1241 and fixed thereto by welding. The solder joint is formed on the upper surface of the active stimulation device 124 at the edge of the second through-hole 1241. The axial direction of the stimulation electrode 122 is perpendicular to the surface direction of the circuit board on which the active stimulation device 124 is located. The two ends of the stimulation electrode 123 protrude from the outside of the upper and lower surfaces of the circuit board on which the stimulation active device 124 is located, respectively. The distance protruding from the upper surface is smaller, and the distance protruding from the lower surface is longer.

[0068] The stimulation electrode 123 and the stimulation active device 124 are also the aforementioned stimulation electrode module.

[0069] The electrode isolator 125, made of insulating material, is disposed between the nested acquisition electrode 121 and stimulation electrode 123 to achieve isolation between them. The electrode isolator 125 can be, for example, a plastic sleeve fitted between the two nested electrodes.

[0070] The acquisition lead 126 is electrically connected to the acquisition electrode 121 through the circuit on the acquisition active device 122, and is led out from one side of the acquisition active device 122, with a connection port at its outer end (signal tail end).

[0071] The stimulation lead 127 is electrically connected to the stimulation electrode 123 via circuitry on the stimulation active device 124, and extends from one side of the stimulation active device 124, with a connection port at its outer end. The stimulation lead 127 employs a wide wire width to achieve higher current electrical stimulation. The two leads are distinguished by their colors and connectors.

[0072] Electrode holder 128 is used to secure electrode assembly 12. Electrode holder 128 may be, for example, a drum spring with a waterproof coating, fitted around the periphery of the sampling electrode 121. Alternatively, electrode holder 128 may be a magnetic or snap-fit ​​component.

[0073] The end cap 13 is a circular cap that matches the head mounting base 11 and is used to be installed on the head mounting base 11 to shield the device receiving slot 1121 and the lead receiving slot 1122.

[0074] Before use, the electrode assembly 12 can be assembled as follows: Figure 4 The overall arrangement shown involves inserting the stimulation electrode 123 inside the acquisition electrode 121, fitting an electrode fixing member 128 (drum spring) around the acquisition electrode 121, and stacking two rectangular circuit boards. Since the welding points of the acquisition electrode 121 and the acquisition active device 122 are on the lower surface of the circuit board, while the welding points of the stimulation electrode 123 and the stimulation active device 124 are on the upper surface of the circuit board, the two circuit boards can be directly stacked without the need for an insulating layer between them.

[0075] Then, the nested electrodes are inserted through the first mounting hole 113, and the two stacked circuit boards are fitted into the matching device receiving slot 1121. Two leads are placed in the lead receiving slot 1122 and one end is led out. Finally, an end cap 13 is placed on the electrode mounting base 11, thus forming... Figure 3The diagram shows an integral core 10A. After assembly, the two circuit boards fit into the device receiving slot 1121 and are thus aligned in the stacking direction, so that the two electrodes fixed thereto remain coaxial. During use, the two electrodes will basically not contact each other, so the electrode assembly 12 may not have an electrode isolator 125.

[0076] Preferably, the device receiving groove 1121 containing the active device (circuit board) and the lead receiving groove 1122 containing the lead wire can be sealed with glue to provide waterproof protection for the active device and its connection with the lead wire.

[0077] The wet section 10B includes a wet section mounting base 16, a support and limiting member 14, and a brine retainer 15. The wet section 10B can also be pre-assembled as follows: Figure 3 As shown in the figure.

[0078] The wet mounting base 16 includes a second disc portion 161 and a second protrusion 162.

[0079] The second disc portion 161 is disc-shaped, and the second protrusion 162 protrudes outward from the center of the first surface of the second disc portion 161. The second protrusion 162 includes two cylindrical sections, both coaxially arranged with the second disc portion 161. The cylindrical section connected to the second disc portion 161 has a relatively smaller diameter, thus forming an outer annular groove 1621 at one end of the second protrusion 162. One sidewall of the outer annular groove 1621 is a limiting surface facing the aforementioned surface of the second disc portion 161. The limiting surface is an annular surface perpendicular to the axial direction of the wet mounting base 16. A plurality of barbs 163 are formed on the outer end edge of the second protrusion 162. The barbs 163 are evenly distributed along the edge (one circumference), and each barb 163 is triangular pyramidal in shape, extending obliquely from the edge toward the second disc portion 161. In this embodiment, there are four barbs 163. Optionally, the barbs 163 may not be provided.

[0080] The wet mounting base 16 also has a second mounting hole 164, which is a circular through hole coaxial with the second disc portion 161 and the second protrusion 162. One end of the hole is located in the middle of the other surface of the second disc portion 161, and the other end is located at the outer end face of the second protrusion 162.

[0081] In addition, when the electrode fixing member 128 is a magnetic attraction member or a snap-fit ​​member, the second protrusion 162 also has a corresponding setting, such as a magnet that cooperates with the magnetic attraction member, a slot that cooperates with the snap-fit ​​member, etc.

[0082] The wet mounting base 16 can also be a one-piece molded plastic part.

[0083] The support and limiting member 14 is used to support and limit the saline solution retainer 15. In this embodiment, the support and limiting member 14 is an elastic suction cup made of silicone, which can also be used to adhere to the human body surface. It is a cylindrical shape with a gradually changing diameter, and an internal cylindrical receiving cavity 142 with a gradually changing diameter is formed. An assembly hole 141 is formed on the end with the smaller diameter. The assembly hole 141 is a circular through hole. Preferably, the diameter of the assembly hole 141 is slightly smaller than the diameter of the second protrusion 162 at the outer annular groove 1621.

[0084] The saline solution retainer 15 is used to absorb saline solution and maintain it in a saline-containing state. It then contacts both electrodes and the human body surface, thereby reducing the contact resistance between the electrodes and the skin through the saline solution. In this embodiment, the saline solution retainer 15 is a cylindrical sponge. Preferably, a slit 151 is provided at the middle of one end of the sponge to facilitate repeated insertion and removal of the electrodes, ensuring sufficient contact between the electrodes and the sponge even after multiple insertions and removals. The slit 151 can be a long strip, a small circular cut, or a cross-shaped cut, etc., and its size matches the diameter of the second mounting hole 164. The most preferred slit 151 is a cross-shaped cut, with the intersection of the cross located on the central axis of the sponge.

[0085] In other words, all the components in the wet section 10B are made of materials such as plastic and sponge that are resistant to salt water immersion and corrosion, and do not contain any electrodes or electronic components, so their lifespan will not be significantly reduced in a salt water environment.

[0086] In addition, such as Figure 3 As shown, optionally, the wet section 10B may also include an identification element 18, which is an annular piece that matches the upper surface of the wet section mounting base 16, for marking the wet section 10B. For example, the identification element 18 is a waterproof patch that is directly attached to the upper surface of the wet section mounting base 16, and the upper surface of the identification element 18 has dot markings. Optionally, the dry section 10A may also include an identification element, which is disposed on the upper surface of the end cap 13 for marking corresponding points, or the dot markings may be directly formed on the upper surface of the end cap 13. Alternatively, no identification element may be provided.

[0087] Before use, the second protrusion 162 of the wet mounting base 16 can be passed through the mounting hole 141 of the support limiting member 14 and inserted into the receiving cavity 142 until the outer annular groove 1621 of the second protrusion 162 is partially fitted into the mounting hole 141. Then, the unabsorbed brine retainer 15 (sponge) is pressed into the receiving cavity 142, so that it is stuck in the receiving cavity 142 and will not fall off, thus forming a... Figure 3The diagram shows an integral wet section 10B. Since the mounting hole 141 of the support limiting member 14 is interference-fitted with the second protrusion 162, and the movement of the support limiting member 14 in both directions is limited by a surface of the second disc portion 161 and a limiting surface, the sponge will essentially not fall off during use. Therefore, the structure of the wet section mounting base 16 can be further simplified by omitting the barb 163.

[0088] In this embodiment, the overall width (i.e., the diameter of the disc portion) of the dry-wet separation electrode device 10 is approximately 10 mm to 18 mm, preferably 10 mm, and the overall axial height is 5 mm to 15 mm, preferably 8 mm. The brine holding portion 15 (sponge) can absorb approximately 10 times its own weight in brine, and after fully absorbing the brine, it can ensure high-quality signal transmission for approximately 1 to 2 hours.

[0089] The elastic fixing part 20 is used to fix multiple dry and wet separation electrode devices 10 to predetermined positions on the human body surface. In this embodiment, the saline electrode device 100 is an EEG cap, and the elastic fixing part 20 is generally a hemispherical mesh that completely covers the top of the human head, formed by a combination of multiple elastic bands. The elastic fixing part 20 is made of a human-friendly elastic material, such as silicone.

[0090] Figure 8 This is a schematic diagram of the elastic band in this embodiment.

[0091] like Figure 3 and Figure 8 As shown, each elastic band 21 has two annular sheet-like portions 211 at both ends and a long strip-shaped portion 212 connecting the two annular sheet-like portions 211 in the middle. A circular mounting hole 2111 is formed in the middle of the annular sheet-like portion 211, and the diameter of the mounting hole 2111 is approximately equal to or slightly smaller than the diameter of the thinner segment of the protrusion 112.

[0092] In an alternative, the elastic fixing part 20 can also be integrally formed, that is, it includes a plurality of the above-mentioned annular sheet-like parts 211, each annular sheet-like part 211 having a plurality of the above-mentioned elongated sheet-like parts 212 extending from its edge, and the elongated sheet-like parts 212 being interconnected with other annular sheet-like parts 211.

[0093] When the saline electrode device 100 is another device, the elastic fixing part 20 can also take a corresponding form. For example, when it is a myoelectric device, the elastic fixing part 20 can also be an elastic band with multiple mounting holes for wrapping around the subject's limb.

[0094] Before use, the wet part 10B can be installed at several mounting holes 2111 of the elastic fixing part 20 as needed. Since the cost of the wet part 10B is very low, for easier use, the wet part 10B can also be pre-installed at all mounting holes 2111.

[0095] Then, the entire elastic fixing part 20, on which multiple wet parts 10B are installed, is immersed in saline solution, causing the multiple saline retaining members 15 to fully absorb the saline solution and expand, tightly fitting into their respective support limiting members 14, with one end of the saline retaining member 15 having a notch 151 pressing against one end of the second mounting hole 164. The elastic fixing part 20 can then be removed from the saline solution and worn on the subject's head.

[0096] In use, several assembled stems 10A are assembled onto the corresponding wet portions 10B to form several dry-wet separation electrode devices 10. These electrode devices can then be used to collect EEG signals and / or stimulate the required locations. Specifically, the nested electrodes of the stem 10A, fitted with electrode fixing pieces 128 (drum springs), are inserted into the second mounting holes 164 on the wet portion mounting base 16 until the lower surface of the stem mounting base 11 contacts the upper surface of the wet portion mounting base 16. At this point, one end of the two nested electrodes is inserted into the cut 151 of the saline solution retainer 15 (sponge), thus making full contact with the sponge. The electrode fixing pieces 128 (drum springs) are secured between the outer peripheral surface of the acquisition electrode 121 and the inner wall of the second mounting hole 164, thereby fixing the stem 10A and the wet portion 10B. At this time, only one end of the electrode of the stem 10A is in contact with the saline solution in the sponge; the other components of the stem 10A, especially the active device, are not in contact with the saline solution at all.

[0097] After the electrode device 10 is assembled, the acquisition lead 126 and the stimulation lead 127 are connected to the corresponding interfaces, and EEG signal acquisition and / or electrical stimulation can begin. Since each electrode device 10 includes an acquisition electrode 121 and a stimulation electrode 123, and is connected to the corresponding signal acquisition unit 200 and electrical stimulation control unit 300 via corresponding leads, EEG signal acquisition and electrical stimulation can be performed simultaneously at various locations where the electrode device 10 is installed.

[0098] During use, if it is necessary to switch the brain region for signal acquisition / electrical stimulation, simply remove the unused electrode device 10 stem 10A and insert it into the wet part 10B of the corresponding brain region, forming a new electrode device 10 at that location. This allows for switching the brain region for signal acquisition / electrical stimulation. Since not many brain regions are typically tested simultaneously, the number of electrode devices 10 can be relatively small, for example, 10 to 20, significantly reducing equipment costs.

[0099] After a period of use, some sites may experience increased impedance due to the evaporation of the brine. In this case, the corresponding stem 10A can be pulled out, and water can be added through the central hole (i.e., the second mounting hole 164) of the wet part 10B using a syringe. Alternatively, the stems 10A of all sites can be removed, and then all wet parts 10B can be soaked.

[0100] After one subject has finished using the device, remove all the tubes 10A. Then, simply remove and discard the saline retainer 15 (sponge), and reinstall a new saline retainer 15 into the wet section 10B. Alternatively, soak, disinfect, and clean the elastic fixing part 20 and multiple wet sections 10B as a whole before using it on the next subject. Alternatively, the support limiting part 14 and the saline retainer 15, which are in direct contact with the subject's body surface, can be discarded and replaced together.

[0101] Functions and effects of Example 1

[0102] According to the dry and wet separation electrode device and integrated acquisition and stimulation system provided in this embodiment, the electrode device includes a dry part and a wet part. The wet part is mounted on a fixed part by a wet part mounting base. The electrodes of the dry part are detachably installed in the mounting holes of the wet part mounting base through electrode fixing components. Therefore, the dry part and the wet part can be easily separated and installed. After separation, only the fixed part with multiple wet parts can be immersed in saline solution for soaking. Then, it is worn on the subject's body surface. The dry part is then placed into the mounting holes of the wet part through the electrode fixing components, fixing the dry part and the wet part together. One end of the electrode is in contact with the saline solution retainer that has fully absorbed the saline solution, thus forming a saline electrode for acquiring EEG signals and / or stimulating the subject. The components of the wet part are all made of materials such as plastic and sponge that are resistant to saline immersion and corrosion, and do not contain any electrodes or electronic components. Therefore, their lifespan is basically not shortened in the saline environment. The dry part also has an active device, thus realizing the function of an active electrode. The active device is placed in the device receiving groove of the dry part mounting base and sealed, thus avoiding the influence of saline solution and maintaining the long-term stable operation of the active device.

[0103] In other words, the dry-wet separation electrode device of this embodiment can reliably realize the function of an active electrode, and also has the simplicity and ease of use of a brine electrode.

[0104] The dry-wet separation design also achieves the separation of sites and electrodes. While achieving high-density site coverage at low cost, it also allows for the use of electrodes with lower leads, combining the advantages of saline electrode caps and disc electrodes while avoiding their respective disadvantages. In the integrated acquisition and stimulation system, due to this electrode device, multiple wet sections can be pre-assembled on the fixed part to achieve high-density coverage of the entire brain. High density can be achieved by installing the entire core, or core sections can be installed on wet sections at specific locations as needed. During use, if it is necessary to switch electrode positions, simply remove the core section from the unused position and reinstall it on the desired wet section. Therefore, it is possible to achieve EEG signal acquisition and / or electrical stimulation of the entire brain region with a small number of electrode devices, significantly reducing equipment costs. Furthermore, switching the test brain region can be achieved simply by inserting and removing the core section, without the need for complex software operations to switch test positions, greatly simplifying use and enabling large-scale promotion and application in clinical applications and even to general consumers.

[0105] In this embodiment, an electrode device has both a data acquisition electrode and a stimulation electrode, which are connected to the signal acquisition unit and the electrical stimulation control unit respectively through corresponding leads. They can work simultaneously, so there is no need to switch between the two functions through complex software operations during use, making it more convenient to use.

[0106] Furthermore, the acquisition electrode and the stimulation electrode are respectively hollow tubular and slender cylindrical, and are arranged in a nested manner to form a mutually separate dual-electrode structure, ensuring that the functions of the two electrodes do not interfere with each other. This arrangement also allows the two electrodes to use different electrode materials. In this embodiment, the acquisition electrode is a non-polarized electrode, thus enabling high-quality EEG signal acquisition; the stimulation electrode is a dedicated electrical stimulation electrode, capable of withstanding higher currents, and when used with saline solution, the polarized electrode has a longer lifespan.

[0107] Furthermore, one end of the acquisition electrode is welded and fixed to the acquisition active device (circuit board), and one end of the stimulation electrode is welded and fixed to the stimulation active device. The two circuit boards have the same external dimensions and are stacked and fitted into the same matching device receiving slot. The through holes on the circuit boards are also aligned. Therefore, the positioning of the two electrodes can be achieved through the fitting of the device receiving slot and the two circuit boards, so that the two electrodes remain coaxial and a certain gap is maintained between them to prevent them from contacting each other. This avoids the two electrodes from affecting each other during use. Moreover, through this ingenious design, the circuit board and other structures have composite functions, eliminating the need for an insulating isolation structure between the two electrodes, further reducing the number of components and facilitating the large-scale production of this electrode device.

[0108] Furthermore, one end of the acquisition electrode is soldered to the pad on the lower surface of the acquisition active device placed below, and the stimulation electrode passes through the through hole on the stimulation active device placed above, with the solder joint formed on the upper surface of the stimulation active device. Therefore, the two circuit boards can be directly stacked without affecting each other, eliminating the need to separate the two circuits or place an insulating layer between them. This also reduces the number of components, making the overall structure of the electrode device more streamlined, easier to assemble, and conducive to the miniaturization of the electrode device.

[0109] Furthermore, the stimulation electrode is longer, with one end extending to the outside of the tubular collection electrode, thereby ensuring that the stimulation electrode nested in the inner layer can also make full contact with the saline holding part (sponge).

[0110] Furthermore, the electrode assembly may also include an electrode isolation section (isolation tube) fitted between the acquisition electrode and the stimulation electrode, which can effectively ensure the separation of the two electrodes and further improve the reliability of the electrode assembly.

[0111] Furthermore, the electrode assembly also includes acquisition leads and stimulation leads, which can be connected to the corresponding interfaces of the signal acquisition unit and the electrical stimulation control unit, respectively. The two types of leads use different colored outer layers and different connectors, making them easier and more intuitive to distinguish.

[0112] Furthermore, the electrode assembly also includes an electrode fixing component, which can use methods such as drum spring (clamping), magnetic attraction, or snap-on to fix the two nested electrodes in the electrode assembly hole. This allows the electrode assembly to be easily inserted and removed by hand, making it more convenient to use and improving the reliability of the electrode device.

[0113] Furthermore, wet areas can have tags corresponding to specific locations, facilitating rapid positioning of the cadres. Cadres can also have tags for easy one-to-one matching, or they can be untagged for easy switching.

[0114] Furthermore, the upper end of the sponge has a slit, allowing the electrode to be easily inserted into the slit and make full contact with the sponge. This ensures the quality of the acquired signal and the effectiveness of the electrical stimulation, and maintains good contact between the electrode and the sponge even after repeated insertions and removals. The slit can be a long strip, a cross-shaped slit, etc., making it very easy to manufacture.

[0115] Furthermore, the outer edge of the second protrusion of the wet mounting base has multiple barbs. Therefore, after the sponge fully absorbs the salt water, the multiple barbs will embed into the sponge, which will play a role in fixing and limiting it, making the sponge less likely to fall off and able to remain stable during use.

[0116] Furthermore, since the diameter of the end of the second protrusion near the disc is smaller, forming an outer annular groove, and the diameter of the mounting hole at one end of the support limiting part (suction cup) is slightly smaller than the outer diameter of the second protrusion at the outer annular groove, the support limiting part can be interference-fitted onto the second protrusion, and its movement is limited by the second disc and the second protrusion, especially the movement towards the disengagement direction. After the sponge fully absorbs water, it will be tightly embedded in the inner cavity of the support limiting part. Therefore, even if the second protrusion is not provided with barbs, the suction cup and the sponge are not easy to fall off during use. Thus, the structure of the wet mounting base can be further simplified.

[0117] Furthermore, the cadre mounting base is also equipped with an end cap, which can cover the lead wire receiving slot and device receiving slot on the cadre mounting base, thus protecting the active device, lead wire and its connection parts, and also making the overall appearance of the electrode device more aesthetically pleasing and convenient for labeling.

[0118] In this embodiment, the electrode device uses an elastic fixing part to fix multiple electrode devices to the subject's body surface. The elastic fixing part includes multiple annular sheet-like parts and multiple strip-like sheet-like parts, and is made of human-friendly material. Therefore, not only is it more comfortable for the subject to wear, and there will be no allergies or hot sensations on the body surface, but it also covers very little of the body surface, providing a large operating space. Therefore, it is also easy to disassemble and adjust each electrode device during use, providing greater flexibility in use.

[0119] Furthermore, when necessary, the stem can be pulled out and a syringe can be used to directly replenish water to the wet area.

[0120] Furthermore, after a subject has finished using the device, the sponge or sponge and suction cup can be removed and discarded, and a new sponge or sponge and suction cup can be replaced so that the electrode device can be used for the next subject. The cost of the discarded part is very low, while the relatively expensive parts such as the elastic fixing part, mounting base and electrode assembly can be retained and reused multiple times. Therefore, while avoiding cross-infection, the cost of use can be greatly reduced, which is also conducive to the large-scale promotion and application of the electrode device and related equipment.

[0121] In this embodiment, the signal acquisition unit and the electrical stimulation control unit are connected to the same control module, and their timing is synchronized through the control module. Therefore, it is applicable to signal acquisition and electrical stimulation with high synchronization requirements.

[0122] <Example 2>

[0123] This embodiment provides a dry and wet separation electrode device and an integrated system for collecting stimulation. In this embodiment, the same symbols are assigned to the same components as in Embodiment 1 and the corresponding descriptions are omitted.

[0124] Figure 9 This is an exploded view of the dry-wet separation electrode device in this embodiment.

[0125] like Figure 9 As shown, compared with Embodiment 1, the difference in this embodiment is that the structure of the electrode assembly is different.

[0126] Figure 10 This is an exploded view of the electrode assembly in this embodiment.

[0127] like Figure 9 and Figure 10 As shown, the electrode assembly 12 in this embodiment also includes a sampling electrode 121, a sampling active device 122, a stimulation electrode 123, a stimulation active device 124, an electrode isolation portion 125, a sampling lead 126, and a stimulation lead 127. However, the sampling electrode 121 is also a long, thin cylindrical shape with a centered point, and its external dimensions are approximately the same as those of the stimulation electrode 123. The sampling electrode 121 is also a non-polarized electrode. The stimulation electrode 123 is the same as that in Embodiment 1.

[0128] Both the active acquisition device 122 and the active stimulation device 124 are rectangular circuit boards, stacked in the device receiving slot 1112. However, the active acquisition device 122 has two first through holes 1221, and the active stimulation device 124 has two second through holes 1241, corresponding to the shape and distribution of the first through holes 1221. In the stacked state, the two first through holes 1221 and the two second through holes 1241 on the two circuit boards are aligned and connected, forming two sets of through holes. The acquisition electrode 121 and the stimulation electrode 123 pass through the two sets of first through holes 1221 and second through holes 1241, respectively, meaning the two electrodes are arranged side-by-side. The acquisition electrode 121 is welded and fixed to the edge of one of the first through holes 1221 on the lower surface of the active acquisition device 122, while the other first through hole 1221 on the active acquisition device 122 is only used for the stimulation electrode 123 to pass through. The stimulation electrode 123 is soldered to the edge of a second through-hole 1241 on the upper surface of the stimulation active device 124 located above. The other second through-hole 1241 on the stimulation active device 124 is only used for the acquisition electrode 121 to pass through. Therefore, in this embodiment, directly stacking the two circuit boards will not cause short circuits or other problems. Because the two sets of through-holes on the circuit board fix and limit the two electrodes, the two electrodes will not come into contact at all.

[0129] The acquisition lead 126 and the stimulation lead 127 also extend from one side of the acquisition active device 122 and the stimulation active device 124, respectively.

[0130] The total width of the sampling electrode 121 and the stimulation electrode 123, arranged side by side, is slightly smaller than the diameter of the first mounting hole 113 and the second mounting hole 164. The two electrodes are inserted together into the second mounting hole 164 and extend from the lower end of the second mounting hole 164 to contact the saline holding member 15. Alternatively, one or both of the first mounting hole 113 and the second mounting hole 164 can be through holes of other shapes adapted to the two side by side electrodes, such as through holes with an elongated cross-section.

[0131] In an alternative, the active acquisition device 122 and the active stimulation device 124 can also be made on the same circuit board, which has two through holes for soldering and fixing the two electrodes respectively, and the two leads of the two electrodes extend from the same side of the circuit board, thus achieving a similar technical effect.

[0132] Since the two electrodes arranged side by side are relatively thin and easy to insert, the brine retainer 15 in this embodiment can have an elongated cutout 151.

[0133] In this embodiment, the other structures are the same as in Embodiment 1, so they will not be described again.

[0134] Functions and effects of Example 2

[0135] Based on the function and effect of the dry and wet separation electrode device and the integrated acquisition and stimulation system provided in this embodiment, since the acquisition electrode and the stimulation electrode are arranged side by side, the acquisition electrode can also be made into a solid, slender cylindrical shape, which is more convenient for production and processing. Furthermore, the two electrodes arranged side by side are less likely to come into contact, so there is no need to set an insulating isolation structure between the two electrodes.

[0136] <Example 3>

[0137] This embodiment provides a dry and wet separation electrode device and an integrated system for collecting stimulation. In this embodiment, the same symbols are assigned to the same components as in Embodiment 1 and the corresponding descriptions are omitted.

[0138] Figure 11 This is a structural diagram of the electrode assembly in this embodiment.

[0139] like Figure 11 As shown, compared with Embodiment 1, the difference in this embodiment is that the structure of the electrode assembly is different.

[0140] The electrode assembly 12 in this embodiment includes an electrode 1201, an active device 1202, a lead wire 1203, and an electrode fixing member 1204.

[0141] The electrode 1201 is a solid, slender cylinder. The active device 1202 is also located on a rectangular circuit board, which has a circular through-hole in the middle. The electrode 1201 passes through the through-hole of the active device 1202 and is fixed to the active device 1202 at the through-hole by soldering and electrically connected to the circuitry thereon. The soldering point can be formed on the upper or lower surface. The lead wire 1203 extends from one side of the active device 1202. The electrode holder 1204 is used to fix the electrode assembly 12 and is the same as the electrode holder 128 in Embodiment 1.

[0142] The assembly method of electrode assembly 12 in cadre 10A is similar to that in Embodiment 1.

[0143] In the saline electrode device 100 of this embodiment, among the multiple stems 10A, the electrodes 1201 in a portion of the stems 10A can be the aforementioned collection electrodes, and the electrodes 1201 in another portion of the stems 10A can be the aforementioned stimulation electrodes. The end caps 13 of these two types of stems 10A can be distinguished by different colors, or corresponding markings can be set on the outer surface of the end caps 13.

[0144] In use, the elastic fixing part 20, which is equipped with multiple wet parts 10B, is soaked in saline solution and then worn on the subject's head. Then, as needed, the head 10A containing the acquisition electrodes or the head 10A containing the stimulation electrodes is installed at the corresponding mounting holes. The leads of each electrode are connected to the corresponding interfaces, and then EEG signal acquisition / electrical stimulation can begin. During use, the mounting position of the head 10A can be plugged in and unplugged as needed.

[0145] In this embodiment, the other structures are the same as in Embodiment 1, so they will not be described again.

[0146] Functions and effects of Example 3

[0147] Based on the dry and wet separation electrode device and integrated acquisition and stimulation system provided in this embodiment, and building upon the functions and effects of Embodiment 1, the electrode device is easier to manufacture and has a lower cost because it contains only one long cylindrical electrode. Although each electrode device contains only one electrode, multiple electrode devices in the device can be configured with acquisition electrodes and stimulation electrodes respectively, thus achieving both signal acquisition and electrical stimulation functions. Furthermore, by using plug-and-play switching of the installation position, the required functions can be achieved in most cases.

[0148] The above embodiments are merely illustrative of specific implementations of this utility model, and the utility model is not limited to the scope of the above embodiments. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only for illustrating the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wet-dry separation electrode device, used together with a fixing part to form a saline electrode device, wherein the fixing part is used to fix a plurality of the wet-dry separation electrode devices to the body surface of a subject, characterized in that, include: Cadres and wet parts used in contact with salt water, The cadres mentioned include: The cadre mounting base has a device receiving slot; and An electrode assembly for signal acquisition and / or electrical stimulation includes electrodes, an active device, and an electrode holder, wherein the active device is disposed in a device receiving slot. The wet portion includes: A wet-end mounting bracket for mounting the wet-end onto the fixed portion, having a through mounting hole; and A saline solution retainer is used to absorb and retain saline solution. After absorbing saline solution, one end of the retainer contacts one end of the mounting hole, and the other end is used to contact the subject's body surface. The electrode is detachably mounted in the mounting hole via the electrode fixing member, and one end of the electrode is in contact with the brine retainer.

2. The dry-wet separation electrode device according to claim 1, characterized in that: in, The electrode assembly also includes leads extending from one side of the active device. The mounting hole is a second mounting hole, and the cadre mounting base also has a lead receiving groove and a first mounting hole respectively communicating with the device receiving groove. The lead wire extends to the outside through the lead wire receiving groove. The device receiving groove and the lead receiving groove are sealed with glue. The electrode is fixed to the active device and extends out from the first mounting hole.

3. The dry-wet separation electrode device according to claim 2, characterized in that: in, The number of electrodes is one, which can be used for data acquisition or stimulation. The active device is located on a circuit board, which is fitted into the device receiving slot. The electrode is cylindrical and is fixed in the second mounting hole by the electrode fixing member. One end of the electrode is welded to the circuit board.

4. The dry-wet separation electrode device according to claim 2, characterized in that: in, The electrodes include acquisition electrodes and stimulation electrodes. The active device includes an active device for data acquisition and an active device for stimulation, which are fixed to the active electrode for data acquisition and the active electrode for stimulation, respectively. The leads include acquisition leads and stimulation leads, which extend from one side of the acquisition active device and the other side of the stimulation active device, respectively. The acquisition leads and the stimulation leads are different colors and use different connectors. The first mounting hole and the second mounting hole are both corresponding circular through holes. The sampling electrode is a hollow cylindrical tube and is fixed in the second mounting hole by the electrode fixing component. The stimulation electrode is cylindrical with a diameter smaller than the inner diameter of the acquisition electrode, nested inside the acquisition electrode, and separate from the acquisition electrode.

5. The dry-wet separation electrode device according to claim 4, characterized in that: in, The active device for data acquisition and the active device for stimulation are respectively located on the circuit board. The circuit board containing the active data acquisition device has a first through hole in its center, and one end of the data acquisition electrode is soldered and fixed to the circuit on the lower surface of the edge of the first through hole. The circuit board containing the active stimulation device has a second through hole in its center. The stimulation electrode passes through the second through hole and is soldered and fixed to the circuit on the upper surface of the edge of the second through hole. The circuit boards containing the active acquisition device and the active stimulation device are stacked and embedded in the device receiving slot.

6. The dry-wet separation electrode device according to claim 2, characterized in that: in, The electrodes include acquisition electrodes and stimulation electrodes. The active device includes an active device for data acquisition and an active device for stimulation, which are fixed to the active electrode for data acquisition and the active electrode for stimulation, respectively. The leads include acquisition leads and stimulation leads, which extend from one side of the acquisition active device and the other side of the stimulation active device, respectively. Both the acquisition electrode and the stimulation electrode are cylindrical and arranged side by side.

7. The dry-wet separation electrode device according to claim 6, characterized in that: in, The active device for data acquisition and the active device for stimulation are respectively located on the circuit board. The circuit board containing the active data acquisition device has two first through holes. The circuit board containing the active stimulation device has two second through holes, corresponding to the first through hole. The acquisition electrode passes through one of the first through holes and is welded and fixed to the circuit on the lower surface of the edge of the first through hole. The stimulation electrode passes through a second through hole and is welded to the circuit on the upper surface of the edge of the second through hole. The circuit board containing the active acquisition device and the active stimulation device is stacked and embedded in the device receiving slot. The acquisition electrode also passes through another second through hole, and the stimulation electrode also passes through another first through hole.

8. The dry-wet separation electrode device according to claim 2, characterized in that: in, The wet section also includes a support and limiting member connected to the wet section mounting base, which has a receiving cavity. The saline solution retainer is a cylindrical sponge with a slit at one end for insertion of the electrode. After absorbing the brine, the brine retainer is fitted into the receiving cavity, with one end having the cut abutting against one end of the second mounting hole.

9. The dry-wet separation electrode device according to claim 8, characterized in that: in, The electrode fixing component is any one of a drum spring, a magnetic component, or a snap-on component, and the electrode fixing component is made of waterproof material or has a waterproof coating. The incision can be any one of the following: a long strip incision, a circular incision, or a cross-shaped incision.

10. A system for integrating stimulus acquisition, characterized in that, include: A saline electrode device, used to be placed on the body surface of a subject, comprises multiple electrode devices; An electrical stimulation module is used in conjunction with the saline electrode device to achieve electrical stimulation. as well as The signal acquisition module is used in conjunction with the saline electrode device to acquire signals. The electrode device is the dry-wet separation electrode device according to any one of claims 1-9. The electrical stimulation module and the signal acquisition module are independent of each other and are designed as modules.

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