Electroencephalogram signal acquisition device

Abstract

The invention provides an electroencephalogram signal acquisition device, and relates to the technical field of rehabilitation medicine. The electroencephalogram signal acquisition device comprises a plurality of electrodes, a disinfectant container, a disinfection pipeline and a control unit, wherein the control unit is in communication connection with the disinfection pipeline and the electrodes respectively; the first end of each electrode is connected with the liquid outlet of the disinfection pipeline, and the second end of each electrode is used for being in contact with the scalp of a target object; a liquid inlet of the disinfection pipeline is used for being inserted into a disinfectant container; the control unit controls the disinfectant stored in the disinfectant container to be conveyed to each electrode through the disinfection pipeline after determining that the electroencephalogram signal acquisition device is used, so as to clean and disinfect each electrode, namely, the whole cleaning and disinfection process is automatically completed under the intelligent control of the control unit; a user does not need to manually clean a plurality of electrodes in the electroencephalogram acquisition device, so that the cleaning and disinfection efficiency of the plurality of electrodes in the electroencephalogram acquisition device is improved.

Description

Technical Field

[0001] The present invention relates to the field of rehabilitation medical technology, and in particular to an electroencephalogram (EEG) signal acquisition device. Background Art

[0002] Electroencephalographs (EEG) are a non-invasive neuromonitoring technology used to capture and record the brain's electrical activity. Specifically, by placing multiple electrodes on the patient's scalp, it is possible to obtain weak EEG signals generated by brain neurons detected by multiple electrodes. EEG signals contain a large amount of physiological and pathological information. Monitoring and processing EEG signals can not only provide doctors with a basis for clinical diagnosis, but also provide effective auxiliary treatment methods for certain brain diseases.

[0003] At present, the types of electrodes in EEG signal acquisition devices include: wet electrodes and dry electrodes. Among them, wet electrodes include: saline electrodes and gel electrodes; saline electrodes can reduce impedance through saline solution, but the fluidity of saline solution is strong and easy to evaporate during use, that is, it is necessary to manually replenish saline regularly, and the electrode head needs to be manually cleaned after use; gel electrodes use conductive paste or gel as a conductive medium, with low impedance, and the collected EEG signals are stable and reliable, but before collection, the conductive paste or gel needs to be injected into the gaps of the electrode head one by one with a needle, and after the completion of EEG signal collection, due to the residual conductive paste, the electrode head needs to be manually cleaned and disinfected; and, although dry electrodes do not require injection and rehydration, they also need to be manually cleaned, disinfected and maintained after use.

[0004] In the prior art, the problem of how to automatically clean and disinfect the electrodes in the EEG signal acquisition device has not been solved. Summary of the invention

[0005] The purpose of the present invention is to provide an electroencephalogram signal acquisition device to solve the technical problems in the prior art in view of the above-mentioned deficiencies in the prior art.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides an electroencephalogram signal acquisition device, the device comprising: a plurality of electrodes, a disinfectant container, a disinfectant pipeline, and a control unit; the control unit is respectively connected to the disinfectant pipeline and each of the electrodes in communication; the disinfectant container is used to store a disinfectant solution for disinfecting each of the electrodes;

[0008] The first end of each of the electrodes is connected to the liquid outlet of the disinfection pipe, and the second end of each of the electrodes is used to contact the scalp of the target object;

[0009] The liquid inlet of the disinfection pipeline is used to be inserted into the disinfectant container;

[0010] The control unit is used to control the disinfectant solution in the disinfectant container to be delivered to each of the electrodes via the disinfectant pipeline after determining that the EEG signal acquisition device has finished using, so as to clean and disinfect each of the electrodes.

[0011] Optionally, the device further comprises: a medium liquid container and a liquid injection pipeline, the control unit is also in communication connection with the liquid injection pipeline, and the medium liquid container is used to store the medium liquid of each of the electrodes;

[0012] The first end of each electrode is also connected to the liquid outlet of the liquid injection pipeline, and the liquid inlet of the liquid injection pipeline is used to be inserted into the medium liquid container;

[0013] The control unit is further used to control the medium liquid in the medium liquid container to be transported to the target electrode via the injection pipeline, so as to perform liquid replenishment and injection operations on the target electrode.

[0014] Optionally, the control unit includes: a controller and a micro pump; the output end of each electrode is connected to the first input end of the controller; the first output end of the controller is communicatively connected to the input end of the micro pump; the output end of the micro pump is respectively connected to the injection pipe and the disinfection pipe;

[0015] The controller is used to receive a medium liquid shortage signal sent from the target electrode, and generate a fluid replenishment instruction for the target electrode according to the medium liquid shortage signal, and drive the micro pump to transport the medium liquid in the medium liquid container to the target electrode through the injection pipe according to the fluid replenishment instruction for the target electrode; and after determining that the EEG signal acquisition device has finished using, drive the micro pump to transport the disinfectant solution in the disinfectant container to each of the electrodes through the disinfection pipe.

[0016] Optionally, the device further comprises: an EEG amplifier; the input end of the EEG amplifier is connected to the third end of each of the electrodes, and the output end of the EEG amplifier is connected to the second input end of the controller;

[0017] The EEG amplifier is used to receive the EEG signals collected by the electrodes, amplify the EEG signals to obtain amplified EEG signals, and send the amplified EEG signals to the controller.

[0018] Optionally, the electrode is a salt water electrode, and the salt water electrode comprises: a conductive needle, a water-absorbing sponge, a micro water storage container, a valve and a humidity detection unit; the controller is also in communication connection with the valve and the humidity detection unit;

[0019] One end of the conductive needle is connected to the input end of the EEG amplifier, and the other end of the conductive needle is inserted into the absorbent sponge, and the absorbent sponge is used to contact the scalp of the target object;

[0020] The valve is arranged between the contact surface of the water-absorbing sponge and the micro water storage container;

[0021] The humidity detection unit is arranged inside the water-absorbing sponge, and is used to detect the current humidity information of the water-absorbing sponge, and determine whether the medium liquid in the water-absorbing sponge is insufficient according to the current humidity information; if so, a first medium liquid insufficient signal is generated, and the first medium liquid insufficient signal is sent to the controller;

[0022] The controller is further used to control the valve to perform an opening operation according to the received first medium liquid insufficient signal, so as to transport the medium liquid stored in the micro water storage container to the water absorbent sponge.

[0023] Optionally, the salt water electrode further comprises: a first pressure detection unit and a liquid level detection unit; the controller is also in communication connection with the liquid level detection unit and the first pressure detection unit; the liquid level detection unit is used to be arranged in the miniature water storage container;

[0024] The first pressure detection unit is used to detect the current pressure information of the electroencephalogram signal acquisition device, and if it is determined according to the current pressure information that the wearing state of the electroencephalogram signal acquisition device is not worn, then send a message to the controller indicating that the wearing state of the electroencephalogram signal acquisition device is not worn;

[0025] The controller is further used to control the valve to perform a closing operation according to the received wearing state of the electroencephalogram signal acquisition device being not worn, so as to suspend the delivery of the medium liquid stored in the micro water storage container to the water-absorbing sponge;

[0026] The liquid level detection unit is used to detect the current liquid level information in the micro water storage container, and determine whether the medium liquid in the micro water storage container is insufficient according to the current liquid level information, and if so, generate a second medium liquid insufficient signal, and send the second medium liquid insufficient signal to the controller;

[0027] The controller is also used to drive the micro pump to transport the medium liquid in the medium liquid container to the micro water storage container in the salt water electrode through the injection pipe according to the received second medium liquid insufficient signal, so as to perform a liquid replenishment operation on the salt water electrode.

[0028] Optionally, the electrode is a gel electrode, and the device further comprises: a medium liquid cleaning pipeline;

[0029] The liquid inlet of the medium liquid cleaning pipeline is inserted into the disinfectant container, and the liquid inlet of the medium liquid cleaning pipeline is connected to the cleaning port of the injection pipeline;

[0030] The controller is also used to drive the micro pump to transport the disinfectant solution in the disinfectant container to the injection pipe via the medium liquid cleaning pipe according to the received wearing status of the EEG signal acquisition device being not worn, so as to clean and disinfect the injection pipe.

[0031] Optionally, the gel electrode comprises: a conductive sheet and a gel area;

[0032] One end of the conductive sheet is connected to the input end of the EEG amplifier, and the other end of the conductive sheet is connected to the gel area, and the gel area is used to contact the scalp of the target object;

[0033] The liquid outlet of the disinfection pipeline is connected to the gel area, and the disinfection pipeline passes through the center of the conductive sheet;

[0034] The liquid outlet of the liquid injection pipeline is connected to the gel area;

[0035] The controller is also used to drive the micro pump to transport the medium liquid in the medium liquid container to the gel electrode through the injection pipe when it is determined that the medium liquid in the gel electrode is insufficient, so as to perform a fluid replenishment operation on the gel electrode; and after determining that the EEG signal acquisition device has finished using, drive the micro pump to transport the disinfectant solution in the disinfectant container to each of the gel electrodes through the disinfection pipe, and spray the disinfectant solution to each of the gel electrodes through the nozzle provided at the liquid outlet of the disinfection pipe, so as to clean and disinfect each of the gel electrodes.

[0036] Optionally, the gel electrode further comprises: a second pressure detection unit; the second pressure detection unit is arranged at a location where the gel area is connected to the conductive sheet, and the controller is respectively in communication connection with the second pressure detection unit;

[0037] The second pressure detection unit is used to detect the current pressure information in the gel area, and determine whether the gel area is full of medium liquid according to the current pressure information in the gel area, and if not, send a signal indicating that the gel area is not full of medium liquid to the controller;

[0038] The controller is used to drive the micro pump to transport the medium liquid in the medium liquid container to the gel area via the injection pipeline according to the received signal indicating that the gel area is not filled with the medium liquid.

[0039] Optionally, the disinfectant container is provided with a disinfectant filling port, and when the disinfectant in the disinfectant container is insufficient, disinfectant is injected into the disinfectant container through the disinfectant filling port.

[0040] The beneficial effects of this application are:

[0041] The present application provides an EEG signal acquisition device, which includes: multiple electrodes, a disinfectant container, a disinfection pipeline and a control unit. After determining that the EEG signal acquisition device has finished using, the control unit controls the disinfectant stored in the disinfectant container to be transported to each electrode via the disinfection pipeline to clean and disinfect each electrode, thereby realizing automatic cleaning and disinfection of each electrode, that is, the entire cleaning and disinfection process is automatically completed under the intelligent control of the control unit, and there is no need for the user to manually clean the multiple electrodes in the EEG acquisition device, thereby improving the cleaning and disinfection efficiency of the multiple electrodes in the EEG acquisition device.

[0042] Secondly, the EEG signal acquisition device also includes: a medium liquid container and an injection pipeline, which can control the medium liquid stored in the medium liquid container to be transported to each electrode through the injection pipeline by the control unit to perform fluid replenishment and injection operations on each electrode, thereby realizing automatic fluid replenishment and injection of each electrode, without the need for user participation throughout the process, thereby improving the intelligence of the EEG signal acquisition device; and, the EEG signal acquisition device provided by this solution can ensure the continuity of the operation of the EEG signal acquisition device when collecting EEG signals while automatically replenishing each electrode, thereby improving the acquisition quality of EEG signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 1 ;

[0045] Figure 2 A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 2 ;

[0046] Figure 3A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 3 ;

[0047] Figure 4 A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 4 ;

[0048] Figure 5 A cross-sectional structural diagram of a single saline electrode in the EEG acquisition device provided in an embodiment of the present application;

[0049] Figure 6 A top view of a single saline electrode in the EEG acquisition device provided in an embodiment of the present application;

[0050] Figure 7 A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 5 ;

[0051] Figure 8 A cross-sectional structural diagram of a single gel electrode in the EEG acquisition device provided in an embodiment of the present application;

[0052] Fig. 9 A top view of a single gel electrode in the EEG acquisition device provided in an embodiment of the present application;

[0053] Fig.10 A cross-sectional structural diagram of a single dry electrode in the EEG acquisition device provided in an embodiment of the present application;

[0054] Fig.11 A top view of a single dry electrode in the EEG acquisition device provided in an embodiment of the present application;

[0055] Fig.12 A schematic diagram of the structure of the EEG signal acquisition device provided in the embodiment of the present application Figure 6 ;

[0056] Fig.13 A schematic diagram of the structure of an electroencephalogram signal acquisition device provided in an embodiment of the present application Figure 7 .

[0057] Icon: 100-EEG signal acquisition device; 1-electrode; 2-disinfectant container; 3-disinfection pipeline; 4-control unit; 5-EEG cap; 6-medium liquid container; 7-liquid injection pipeline; 8-micro pump; 9-controller; 10-EEG amplifier; 11-medium liquid cleaning pipeline; 21-conductive needle; 22-absorbent sponge; 23-micro water storage container; 24-valve; 25-humidity detection unit; 26-first pressure detection unit; 27-liquid level detection unit; 31-conductive sheet; 32-gel area; 33-first nozzle; 34-second pressure detection unit; 41-needle electrode head; 42-second nozzle. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0060] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0061] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0062] The structure of the EEG signal acquisition device provided by the present application will be introduced through the following embodiments.

[0063] Figure 1 A schematic diagram of the structure of an electroencephalogram signal acquisition device provided in an embodiment of the present application Figure 1 ;like Figure 1 As shown, the EEG signal acquisition device 100 includes: multiple electrodes 1, a disinfectant container 2, a disinfection pipeline 3 and a control unit 4. Among them, each electrode 1 is fixed to the EEG cap 5, and can be distributed according to the international 10-20 EEG positioning system standard to determine the number of multiple electrodes set in the EEG acquisition device and the distribution position of each electrode on the EEG cap.

[0064] Among them, the EEG signal acquisition device 100 is an EEG acquisition device worn on the patient's head, used to collect the patient's EEG signals. The electrodes in the EEG acquisition device can be saline electrodes, gel electrodes or dry electrodes.

[0065] Among them, the control unit is respectively communicated with the disinfection pipeline 3 and each electrode 1; the disinfectant container 2 is used to store the disinfectant solution for disinfecting each electrode; illustratively, for example, the disinfectant container 2 is mainly used to store common disinfectants, such as medical alcohol, that is, the disinfectant container 2 can be made of medical-grade transparent plastic that is resistant to disinfectants.

[0066] The first end of each electrode 1 is connected to the liquid outlet of the disinfection pipeline, and the second end of each electrode is used to contact the scalp of the target object.

[0067] The liquid inlet of the disinfection pipe 3 is used to be inserted into the disinfectant container; that is, the disinfectant container is a closed container, and an outlet is provided on the disinfectant container. A special connecting joint can be used to connect the liquid inlet of the disinfection pipe 3 to the outlet on the disinfectant container 2, so that the disinfectant solution can be transported to each electrode 1 through the disinfection pipe 3 to clean and disinfect each electrode.

[0068] The control unit 4 is used to control the disinfection solution in the disinfection solution container to be delivered to each electrode through the disinfection pipeline after determining that the EEG signal acquisition device has finished using, so as to clean and disinfect each electrode.

[0069] In this embodiment, for example, after the EEG signal acquisition device is used, the control unit responds to the user's triggering operation of the pause button set on the EEG signal acquisition device to determine that the EEG signal acquisition device has ended use. At this time, the control unit starts a disinfection process, such as opening a pre-set valve on the disinfection pipe 3 to transport the disinfectant solution in the disinfectant container 2 to each electrode 1 via the disinfection pipe 3, thereby realizing automatic cleaning and disinfection of each electrode. That is, the entire cleaning and disinfection process is automatically completed under the intelligent control of the control unit, and the user does not need to manually clean the multiple electrodes in the EEG acquisition device, thereby improving the cleaning and disinfection efficiency of the multiple electrodes in the EEG acquisition device.

[0070] Secondly, the electrodes in the EEG signal acquisition device provided in the present application can be of different types, that is, the EEG signal acquisition device provided in the present application can realize automatic cleaning and disinfection of multiple electrodes in the EEG signal acquisition device.

[0071] In summary, an embodiment of the present application provides an EEG signal acquisition device, which includes: multiple electrodes, a disinfectant container, a disinfection pipeline and a control unit. After determining that the EEG signal acquisition device has finished using, the control unit controls the disinfectant stored in the disinfectant container to be transported to each electrode through the disinfection pipeline to clean and disinfect each electrode, thereby realizing automatic cleaning and disinfection of each electrode, that is, the entire cleaning and disinfection process is automatically completed under the intelligent control of the control unit, and the user does not need to manually clean the multiple electrodes in the EEG acquisition device, thereby improving the cleaning and disinfection efficiency of the multiple electrodes in the EEG acquisition device.

[0072] Optionally, considering that the electrodes in the EEG signal acquisition device in the prior art are wet electrodes (i.e., saline electrodes or gel electrodes), in addition to cleaning and disinfecting the wet electrodes, the wet electrodes also need to be automatically injected and replenished. Figure 1Based on this, another new EEG signal acquisition device is proposed.

[0073] refer to Figure 2 FIG. 1 is a schematic diagram of the structure of an electroencephalogram signal acquisition device provided in an embodiment of the present application. Figure 2 ;like Figure 2 As shown, the EEG signal acquisition device also includes: a medium liquid container 6 and an injection pipe 7, and the control unit 4 is also in communication with the injection pipe 7. The medium liquid container 6 is used to store the medium liquid of each wet electrode; illustratively, for example, when the electrode in the EEG signal acquisition device is a saline electrode, the medium liquid is saline; when the electrode in the EEG signal acquisition device is a gel electrode, the medium liquid is gel.

[0074] The first end of each electrode 1 is also connected to the liquid outlet of the injection pipe 7, and the liquid inlet of the injection pipe 7 is used to be inserted into the medium liquid container 6; that is, the medium liquid container 6 is a closed container, and an outlet is provided on the medium liquid container 6. A special connecting joint can be used to connect the liquid inlet of the injection pipe 7 to the outlet on the medium liquid container 6, so that the medium liquid can be transported to each electrode 1 through the injection pipe 7 to perform liquid replenishment and injection operations on each electrode.

[0075] The control unit 4 is also used to control the medium liquid in the medium liquid container 6 to be transported to the target electrode via the injection pipe 7, so as to perform liquid replenishment and injection operations on the target electrode.

[0076] In this embodiment, for example, when the patient wears the EEG signal acquisition device on the head and starts to use it, the control unit starts the injection process, such as opening the valve pre-set on the injection pipe 7 to transport the medium liquid in the medium liquid container 6 to each saline electrode through the injection pipe 7, thereby realizing the injection operation of multiple saline electrodes in the EEG signal acquisition device at the same time. When the multiple saline electrodes in the EEG signal acquisition device are full of medium liquid, the valve pre-set on the injection pipe is closed to suspend the medium liquid in the medium liquid container from being transported to each saline electrode through the injection pipe; and, during the use of the EEG signal acquisition device, when the medium liquid in a certain saline electrode in the EEG signal acquisition device is insufficient, at this time, the control unit starts the rehydration process to transport the medium liquid in the medium liquid container to the saline electrode through the injection pipe, thereby realizing the automatic rehydration operation of the saline electrode, that is, the entire rehydration operation process is automatically completed under the intelligent control of the control unit, and the user does not need to manually rehydrate the electrode with insufficient medium liquid in the EEG acquisition device, thereby improving the rehydration efficiency of multiple electrodes in the EEG acquisition device. Furthermore, the EEG signal acquisition device provided by the present solution can ensure the continuity of the operation of the EEG signal acquisition device when acquiring EEG signals while automatically replenishing fluid to each electrode, thereby improving the acquisition quality of EEG signals.

[0077] It can be understood that compared with wet electrodes, dry electrodes do not require the use of dielectric liquid, so there is no need for injection and replenishment systems, only a cleaning and disinfection system is required.

[0078] Optionally, refer to Figure 3 As shown, the control unit 4 includes: a micro pump 8 and a controller 9; wherein the micro pump 8 can adjust the flow rate and speed flowing through the pipeline (such as the injection pipeline 7) to achieve precise control of the flow rate.

[0079] The output end of each electrode 1 is connected to the first input end of the controller 9; the first output end of the controller 9 is connected to the input end of the micro pump 8 in communication; the output end of the micro pump 8 is connected to the injection pipe 7 and the disinfection pipe 3 respectively;

[0080] The controller 9 is used to receive a medium liquid shortage signal sent from the target electrode, and generate a refilling instruction for the target electrode according to the medium liquid shortage signal, and drive the micro pump 8 to transport the medium liquid in the medium liquid container 6 to the target electrode through the injection pipe 7 according to the refilling instruction for the target electrode; and after determining that the EEG signal acquisition device has finished using, drive the micro pump 8 to transport the disinfectant solution in the disinfectant container 2 to each electrode 1 through the disinfection pipe 3.

[0081] In this embodiment, for example, a liquid level indicator is provided in each saline electrode in the EEG acquisition device. During the use of the EEG acquisition device, when the dielectric liquid in a certain saline electrode in the EEG acquisition device is insufficient, the liquid level indicator in the saline electrode sends a dielectric liquid insufficient signal to the controller through the output end of the saline electrode. The controller generates a fluid replenishment instruction for the saline electrode based on the received dielectric liquid insufficient signal, and sends the fluid replenishment instruction for the saline electrode to the micro pump to drive the micro pump to draw the dielectric liquid in the dielectric liquid container into the injection pipe, and transport the dielectric liquid to the saline electrode via the injection pipe, thereby realizing the fluid replenishment operation of a single saline electrode in the EEG acquisition device and improving the fluid replenishment efficiency.

[0082] Furthermore, after the use of the EEG acquisition device is finished, the user can trigger the preset pause button on the EEG acquisition device. The controller responds to the user's trigger operation and determines that the use of the EEG signal acquisition device has ended. At this time, the controller sends a disinfection instruction to the micropump to drive the micropump to pump the disinfectant solution in the disinfectant container into the disinfection pipe, and then transport it to each saline electrode in the EEG acquisition device through the disinfection pipe, thereby realizing the cleaning and disinfection operation of multiple saline electrodes in the EEG acquisition device, thereby improving the cleaning and disinfection efficiency.

[0083] Optionally, refer to Figure 4As shown, the EEG acquisition device further includes: an EEG amplifier 10; the input end of the EEG amplifier 10 is connected to the third end of each electrode 1, and the output end of the EEG amplifier 10 is connected to the second input end of the controller 9;

[0084] The EEG amplifier 10 is used to receive the EEG signals collected by each electrode 1, amplify the EEG signals to obtain amplified EEG signals, and send the amplified EEG signals to the controller 9.

[0085] Optionally, in this embodiment, in order to ensure the quality of the EEG signals collected by each electrode in the EEG acquisition device, an EEG amplifier 10 can also be set in the EEG acquisition device, that is, the EEG signals collected by each electrode 1 can be amplified by the EEG amplifier 10 to obtain amplified EEG signals to improve the acquisition quality of the EEG signals; and then the amplified EEG signals are sent to the controller, and the controller analyzes and processes the amplified EEG signals.

[0086] The internal structures of different types of electrodes in the EEG acquisition device will be explained in detail through the following examples.

[0087] First, salt water electrode

[0088] Optionally, refer to Figure 5-Figure 6 As shown, Figure 5 This is a cross-sectional structural diagram of a single saline electrode in the EEG acquisition device provided in an embodiment of the present application. Figure 6 A top view of a single saline electrode in the EEG acquisition device provided in an embodiment of the present application.

[0089] refer to Figure 5 or Figure 6 As shown, when multiple electrodes in the EEG acquisition device are saline electrodes, one of the saline electrodes in the EEG acquisition device is taken as an example for introduction.

[0090] The salt water electrode includes: a conductive needle 21, a water-absorbing sponge 22, a micro water storage container 23, a valve 24 and a humidity detection unit 25; the controller is also connected to the valve and the humidity detection unit for communication.

[0091] Considering that the medium liquid used in the salt water electrode is salt water, and the salt water has a certain volatility, it is proposed to build a micro water storage container 23 in each salt water electrode for storing salt water.

[0092] Exemplarily, for example, the conductive needle 21 is a hard electrode needle made of a conductive material Ag / AgCl; the humidity detection unit 25 may be a humidity sensor.

[0093] One end of the conductive needle 21 is connected to the input end of the EEG amplifier 10, and the other end of the conductive needle 21 is inserted into the absorbent sponge 22. The absorbent sponge 22 is used to contact the scalp of the target object, that is, the absorbent sponge 22 has good conductivity after absorbing saline, which is equivalent to a good conductive medium between the patient's brain scalp and the conductive needle, while also avoiding the discomfort caused by the conductive needle directly contacting the scalp.

[0094] The valve 24 is disposed between the contact surface of the water-absorbing sponge 22 and the micro water storage container 23 ; the water-absorbing sponge 22 may be a hard sponge with water-absorbing ability, and the speed of adding salt water to the water-absorbing sponge 22 may be controlled by the valve 24 .

[0095] The humidity detection unit 25 is disposed inside the water-absorbing sponge 22. The humidity detection unit 25 is used to detect the current humidity information of the water-absorbing sponge 22, and determine whether the dielectric liquid in the water-absorbing sponge 22 is insufficient according to the current humidity information; if so, a first dielectric liquid insufficient signal is generated, and the first dielectric liquid insufficient signal is sent to the controller. Specifically, for example, when the humidity sensor detects that the current humidity of the water-absorbing sponge is lower than a preset humidity threshold, a first dielectric liquid insufficient signal is generated.

[0096] The controller 9 is further used to control the valve 24 to perform an opening operation according to the received first medium liquid insufficient signal, so as to transport the medium liquid stored in the micro water storage container 23 to the water-absorbing sponge 22 .

[0097] In this embodiment, the controller sends an opening signal to the valve based on the received first medium liquid insufficient signal. Under the action of the opening signal, the valve performs an opening operation, that is, triggers the water replenishment mechanism, so that the salt water stored in the micro water storage container is replenished to the absorbent sponge at a certain flow rate and flow rate, thereby realizing fully automatic and intelligent water replenishment, thereby improving the replenishment efficiency of the salt water electrode.

[0098] Optionally, continue to refer to Figure 5 As shown, the salt water electrode further includes: a first pressure detection unit 26 and a liquid level detection unit 27; wherein the first pressure detection unit 26 may be a pressure sensor, and the liquid level detection unit 27 may be a liquid level sensor or a liquid level indicator.

[0099] The controller 9 is also connected to the liquid level detection unit 27 and the first pressure detection unit 26 for communication; the liquid level detection unit 27 is used to be arranged in the miniature water storage container 23; optionally, the controller 9 can also communicate with each detection unit by Bluetooth or wifi.

[0100] The first pressure detection unit 26 is used to detect the current pressure information of the EEG signal acquisition device. If it is determined that the wearing state of the EEG signal acquisition device is not worn according to the current pressure information, the wearing state of the EEG signal acquisition device is not worn is sent to the controller 9. Specifically, for example, when the first pressure detection unit does not detect the pressure value or the current pressure value is lower than the preset pressure threshold, it can be determined that the wearing state of the EEG signal acquisition device is not worn. At this time, the first pressure detection unit sends the wearing state of the EEG signal acquisition device to the controller as not worn.

[0101] The controller 9 is also used to control the valve 24 to perform a closing operation based on the received wearing status of the EEG signal acquisition device being not worn, so as to suspend the delivery of the medium liquid stored in the micro water storage container 23 to the absorbent sponge 22; specifically, when the controller 9 receives the wearing status of the EEG signal acquisition device being not worn, the controller 9 stops sending an opening signal to the valve 24, and when the valve 24 does not receive the opening signal, it immediately performs a closing operation, that is, suspends the delivery of the medium liquid stored in the micro water storage container 23 to the absorbent sponge 22, and suspends the rehydration operation, so as to avoid excessive saline loss when the EEG signal acquisition device is not in use, thereby increasing the standby time.

[0102] Continue to refer Figure 5 As shown, the liquid level detection unit 27 is used to detect the current liquid level information in the micro water storage container 23, and determine whether the medium liquid in the micro water storage container 23 is insufficient based on the current liquid level information. If so, a second medium liquid insufficient signal is generated, and the second medium liquid insufficient signal is sent to the controller; in this embodiment, in order to monitor the medium liquid in the micro water storage container 23 in real time, a liquid level sensor can also be set in the micro water storage container, and the liquid level sensor detects the liquid level information in the micro water storage container in real time. When it is detected that the current liquid level information in the micro water storage container is lower than the preset liquid level threshold, it is determined that the medium liquid in the micro water storage container is insufficient, and a second medium liquid insufficient signal is generated, and the second medium liquid insufficient signal is sent to the controller.

[0103] The controller 9 is also used to drive the micro pump 8 to transport the medium liquid in the medium liquid container 6 to the micro water storage container 23 in the salt water electrode through the injection pipe 7 according to the received second medium liquid insufficient signal, so as to perform a liquid replenishment operation on the salt water electrode.

[0104] In this embodiment, for example, the controller generates a rehydration instruction based on receiving a second medium liquid insufficient signal, and sends the rehydration instruction to the micro pump to drive the micro pump to draw the medium liquid in the medium liquid container to the injection pipe, and transport the medium liquid to the micro water storage container in the saline electrode via the injection pipe, thereby realizing the rehydration operation of a single saline electrode in the EEG acquisition device, thereby improving the rehydration efficiency.

[0105] Second, gel electrode

[0106] Optionally, when the multiple electrodes in the EEG acquisition device are gel electrodes, refer to Figure 7 As shown, the EEG acquisition device also includes: a medium liquid cleaning pipeline 11.

[0107] Optionally, considering that the medium liquid used in the gel electrode is gel, and the gel remains in the injection pipe, it may cause the injection pipe to be blocked. Therefore, the gel electrode needs an additional medium liquid cleaning pipe 11 compared to the saline electrode, and the disinfectant container of the gel electrode is a cleaning and disinfection tank, the interior of which is divided into two parts by physical isolation, one part is a clean water tank for cleaning the medium liquid cleaning pipe and the gel electrode head, and the other part is a disinfection tank for disinfection operation.

[0108] Continue to refer Figure 7 As shown, the liquid inlet of the medium liquid cleaning pipeline 11 is inserted into the disinfectant container 2, and the liquid outlet of the medium liquid cleaning pipeline 11 is connected to the cleaning port of the injection pipeline 7;

[0109] The controller 9 is also used to drive the micro pump 8 to transport the disinfectant solution in the disinfectant container to the injection pipe 7 through the medium liquid cleaning pipe 11 to clean and disinfect the injection pipe 7 according to the received wearing status of the EEG signal acquisition device being not worn.

[0110] In one feasible manner, for example, the controller 9 generates a cleaning instruction based on the received wearing status of the EEG signal acquisition device being not worn, and sends the cleaning instruction to the micro pump 8 to drive the micro pump 8 to pump the disinfectant solution in the disinfectant container 2 into the medium liquid cleaning pipe 11, and transport the disinfectant solution to the injection pipe 7 via the medium liquid cleaning pipe 11 to clean and disinfect the injection pipe 7.

[0111] Optionally, refer to Figure 8-Figure 9 As shown, Figure 8 This is a cross-sectional structural diagram of a single gel electrode in the EEG acquisition device provided in an embodiment of the present application. Fig. 9 A top view of a single gel electrode in the EEG acquisition device provided in an embodiment of the present application.

[0112] refer to Figure 8 or Fig. 9 As shown, when multiple electrodes in the EEG acquisition device are gel electrodes, one of the gel electrodes in the EEG acquisition device is taken as an example for introduction.

[0113] The gel electrode includes: a conductive sheet 31 and a gel region 32. Figure 7The injection pipe 7 and the disinfection pipe 3 are both in a tree-like distribution structure, that is, the liquid inlet of the injection pipe 7 is inserted into the medium liquid container 6, and the liquid outlet of the injection pipe 7 includes a plurality of sub-liquid outlets, and each sub-liquid outlet on the injection pipe 7 is respectively connected to a corresponding gel electrode; similarly, the liquid inlet of the disinfection pipe 3 is inserted into the disinfectant container 2, and the liquid outlet of the disinfection pipe 3 includes a plurality of sub-liquid outlets, and each sub-liquid outlet on the disinfection pipe 3 is respectively connected to a corresponding gel electrode.

[0114] Exemplarily, for example, the conductive sheet 31 is a hard electrode made of a conductive material;

[0115] One end of the conductive sheet 31 is connected to the input end of the EEG amplifier 10, and the other end of the conductive sheet 31 is connected to the gel area 32, and the gel area 32 is used to contact the scalp of the target object;

[0116] The liquid outlet of the disinfection pipe 3 is connected to the gel area 32 , and the disinfection pipe 3 passes through the center of the conductive sheet, that is, the disinfection pipe 3 is inserted into the center of the conductive sheet 31 .

[0117] The liquid outlet of the liquid injection pipeline 7 is connected to the gel area 32;

[0118] The controller 9 is also used to drive the micro pump 8 to transport the medium liquid in the medium liquid container 6 to the gel area 32 through the injection pipe 7 to replenish the gel electrode when it is determined that the medium liquid in the gel electrode is insufficient; and after determining that the EEG signal acquisition device has finished using, drive the micro pump 8 to transport the disinfectant solution in the disinfectant container 2 to each gel electrode through the disinfection pipe 3, and the first nozzle 33 set at the liquid outlet of the disinfection pipe 3 sprays the disinfectant solution to each gel electrode to clean and disinfect each gel electrode.

[0119] In one feasible manner, for example, when the patient wears the EEG signal acquisition device on the head and starts to use it, the controller starts the injection process, that is, the controller sends an injection instruction to the micropump to drive the micropump to transport the medium liquid in the medium liquid container to the gel area through the injection pipe, until the gel area is full of gel, and then stops the injection operation; and, when the controller determines that the medium liquid in the gel electrode is insufficient, the controller sends a refill instruction to the micropump to drive the micropump to transport the gel in the medium liquid container to the gel area through the injection pipe, thereby realizing automatic refilling operation of the gel electrode; secondly, after determining that the EEG signal acquisition device has ended use, the controller sends a disinfection instruction to the micropump to drive the micropump to transport the disinfectant solution in the disinfectant container to each gel electrode through the disinfection pipe and the disinfection sub-pipe in each gel electrode, and the nozzle set at the liquid outlet of the disinfection sub-pipe in each gel electrode sprays the disinfectant solution to each gel electrode, thereby realizing automatic cleaning and disinfection operation of each gel electrode.

[0120] Optionally, continue to refer to Fig. 9 As shown, the gel electrode further includes: a second pressure detection unit 34; the second pressure detection unit is arranged at the connection between the gel area 32 and the conductive sheet 31, and the controller 9 is respectively connected to the second pressure detection unit 34 for communication;

[0121] The second pressure detection unit 34 is used to detect the current pressure information in the gel area 32, and determine whether the gel area 32 is full of medium liquid according to the current pressure information in the gel area 32. If not, a signal indicating that the gel area is not full of medium liquid is sent to the controller 9;

[0122] The controller 9 is used to drive the micro pump 8 to transport the medium liquid in the medium liquid container 6 to the gel area 32 via the liquid injection pipe 7 according to the received signal that the gel area is not full of the medium liquid.

[0123] In one feasible manner, for example, the current pressure in the gel area is collected in real time by a pressure sensor provided in the gel electrode, and based on the current pressure in the gel area, it is determined whether the gel area is full of dielectric liquid; if the current pressure in the gel area is less than a preset pressure threshold, it is determined that the gel area is not full of dielectric liquid, and a signal indicating that the gel area is not full of dielectric liquid is sent to the controller; the controller generates a refill instruction based on the received signal that the gel area is not full of dielectric liquid, and sends the refill instruction to the micro pump to determine that the micro pump transports the gel in the dielectric liquid container to the gel area via the injection pipe, thereby realizing automatic refill operation of the gel electrode, and the entire refill process does not require user participation, thereby improving refill efficiency.

[0124] Third, dry electrode

[0125] Optionally, refer to Figure 10-11 As shown, Fig.10 A cross-sectional structural diagram of a single dry electrode in the EEG acquisition device provided in an embodiment of the present application, Fig.11 A top view of a single dry electrode in the EEG acquisition device provided in the embodiment of the present application. It should be noted that the number of multiple dry electrodes provided in the EEG acquisition device and the distribution position of each dry electrode can be determined according to the international 10-20 EEG localization system standard distribution.

[0126] refer to Figure 10-11 As shown, the dry electrode is composed of a conductive material Ag / AgCl hard electrode needle electrode head 41.

[0127] refer to Figure 11-Figure 12As shown, after determining that the dry electrode has been used, the controller 9 generates a cleaning instruction and sends the cleaning instruction to the micro pump to drive the micro pump 8 to introduce the clean water in the medium liquid container 6 into the disinfection pipe 3. The clean water passes through the second nozzle 42 set at the liquid outlet of the disinfection pipe 3 to clean each dry electrode. After the cleaning is completed, the controller 9 generates a disinfection instruction and sends the disinfection instruction to the micro pump 8 to drive the micro pump 8 to introduce the disinfectant in the disinfectant container 2 into the disinfection pipe 3. The disinfectant passes through the second nozzle 42 set at the liquid outlet of the disinfection pipe 3 to disinfect each dry electrode. At this point, the cleaning and disinfection operations of multiple dry electrodes in the EEG acquisition device are realized.

[0128] Optionally, refer to Fig.12 As shown, when multiple electrodes in the EEG acquisition device are dry electrodes, the EEG acquisition device mainly consists of multiple dry electrodes, a disinfection pipeline 3, a medium liquid container 6, a controller 9, a micro pump 8, an EEG cap 5, an EEG amplifier 10, and a disinfectant container 2.

[0129] The difference from the wet electrode system is that the medium liquid container 6 stores clean water for cleaning the dry electrodes, and the same disinfection pipeline 3 is used for cleaning and disinfection.

[0130] Among them, the cleaning and disinfection process of the dry electrode is as follows:

[0131] 1) Make sure the EEG cap has been removed successfully;

[0132] 2) The controller controls the micro pump to start working, and the clean water in the medium liquid container passes through the cleaning and disinfection pipeline to the nozzle to clean each dry electrode;

[0133] 3) After the cleaning is completed, the controller controls the micro pump to start working, so that the disinfectant in the disinfectant container reaches the nozzle through the disinfection pipeline to disinfect each dry electrode, that is, the cleaning and disinfection process is automatically completed by the controller.

[0134] Optionally, refer to Fig.13 As shown, taking the example that all electrodes in the EEG acquisition device are saline electrodes, a disinfectant injection port is provided on the disinfectant container 2. When the disinfectant in the disinfectant container 2 is insufficient, disinfectant is injected into the disinfectant container 2 through the disinfectant injection port; and a medium liquid injection port is provided on the medium liquid container 6. When the disinfectant in the disinfectant container is insufficient, disinfectant is injected into the disinfectant container through the disinfectant injection port.

[0135] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0136] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0137] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0138] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

Claims

1. An electroencephalogram signal acquisition device, characterized in that: The device comprises: a plurality of electrodes, a disinfectant container, a disinfectant pipeline and a control unit; the control unit is respectively connected to the disinfectant pipeline and each of the electrodes in communication; the disinfectant container is used to store a disinfectant solution for disinfecting each of the electrodes; The first end of each of the electrodes is connected to the liquid outlet of the disinfection pipe, and the second end of each of the electrodes is used to contact the scalp of the target object; The liquid inlet of the disinfection pipeline is used to be inserted into the disinfectant container; The control unit is used to control the disinfectant solution in the disinfectant container to be delivered to each of the electrodes via the disinfectant pipeline after determining that the EEG signal acquisition device has finished using, so as to clean and disinfect each of the electrodes.

2. The device according to claim 1, characterized in that The device further comprises: a medium liquid container and a liquid injection pipeline, the control unit is also in communication connection with the liquid injection pipeline, the medium liquid container is used to store the medium liquid of each of the electrodes; The first end of each electrode is also connected to the liquid outlet of the liquid injection pipeline, and the liquid inlet of the liquid injection pipeline is used to be inserted into the medium liquid container; The control unit is further used to control the medium liquid in the medium liquid container to be transported to the target electrode via the injection pipeline, so as to perform liquid replenishment and injection operations on the target electrode.

3. The device according to claim 2, characterized in that The control unit comprises: a controller and a micro pump; the output end of each electrode is connected to the first input end of the controller; the first output end of the controller is communicatively connected to the input end of the micro pump; the output end of the micro pump is respectively connected to the injection pipe and the disinfection pipe; The controller is used to receive a medium liquid shortage signal sent from the target electrode, and generate a rehydration instruction for the target electrode according to the medium liquid shortage signal, and drive the micro pump to transport the medium liquid in the medium liquid container to the target electrode through the injection pipe according to the rehydration instruction for the target electrode; and after determining that the EEG signal acquisition device has finished using, drive the micro pump to transport the disinfectant solution in the disinfectant container to each of the electrodes through the disinfection pipe.

4. The device according to claim 3, characterized in that The device further comprises: an EEG amplifier; the input end of the EEG amplifier is connected to the third end of each of the electrodes, and the output end of the EEG amplifier is connected to the second input end of the controller; The EEG amplifier is used to receive the EEG signals collected by the electrodes, amplify the EEG signals to obtain amplified EEG signals, and send the amplified EEG signals to the controller.

5. The device according to claim 4, characterized in that The electrode is a salt water electrode, which includes: a conductive needle, a water-absorbing sponge, a micro water storage container, a valve and a humidity detection unit; the controller is also in communication connection with the valve and the humidity detection unit; One end of the conductive needle is connected to the input end of the EEG amplifier, and the other end of the conductive needle is inserted into the absorbent sponge, and the absorbent sponge is used to contact the scalp of the target object; The valve is arranged between the contact surface of the water-absorbing sponge and the micro water storage container; The humidity detection unit is arranged inside the water-absorbing sponge, and is used to detect the current humidity information of the water-absorbing sponge, and determine whether the medium liquid in the water-absorbing sponge is insufficient according to the current humidity information; if so, a first medium liquid insufficient signal is generated, and the first medium liquid insufficient signal is sent to the controller; The controller is further used to control the valve to perform an opening operation according to the received first medium liquid insufficient signal, so as to transport the medium liquid stored in the micro water storage container to the water absorbent sponge.

6. The device according to claim 5, characterized in that The salt water electrode further comprises: a first pressure detection unit and a liquid level detection unit; the controller is also in communication connection with the liquid level detection unit and the first pressure detection unit; the liquid level detection unit is used to be arranged in the micro water storage container; The first pressure detection unit is used to detect the current pressure information of the electroencephalogram signal acquisition device, and if it is determined according to the current pressure information that the wearing state of the electroencephalogram signal acquisition device is not worn, then send a message to the controller indicating that the wearing state of the electroencephalogram signal acquisition device is not worn; The controller is further used to control the valve to perform a closing operation according to the received wearing state of the electroencephalogram signal acquisition device being not worn, so as to suspend the delivery of the medium liquid stored in the micro water storage container to the water-absorbing sponge; The liquid level detection unit is used to detect the current liquid level information in the micro water storage container, and determine whether the medium liquid in the micro water storage container is insufficient according to the current liquid level information, and if so, generate a second medium liquid insufficient signal, and send the second medium liquid insufficient signal to the controller; The controller is also used to drive the micro pump to transport the medium liquid in the medium liquid container to the micro water storage container in the salt water electrode through the injection pipe according to the received second medium liquid insufficient signal, so as to perform a liquid replenishment operation on the salt water electrode.

7. The device according to claim 4, characterized in that The electrode is a gel electrode, and the device further comprises: a medium liquid cleaning pipeline; The liquid inlet of the medium liquid cleaning pipeline is inserted into the disinfectant container, and the liquid inlet of the medium liquid cleaning pipeline is connected to the cleaning port of the injection pipeline; The controller is also used to drive the micro pump to transport the disinfectant solution in the disinfectant container to the injection pipe via the medium liquid cleaning pipe according to the received wearing status of the EEG signal acquisition device being not worn, so as to clean and disinfect the injection pipe.

8. The device according to claim 7, characterized in that The gel electrode comprises: a conductive sheet and a gel area; One end of the conductive sheet is connected to the input end of the EEG amplifier, and the other end of the conductive sheet is connected to the gel area, and the gel area is used to contact the scalp of the target object; The liquid outlet of the disinfection pipeline is connected to the gel area, and the disinfection pipeline passes through the center of the conductive sheet; The liquid outlet of the liquid injection pipeline is connected to the gel area; The controller is also used to drive the micro pump to transport the medium liquid in the medium liquid container to the gel electrode through the injection pipe when it is determined that the medium liquid in the gel electrode is insufficient, so as to perform a fluid replenishment operation on the gel electrode; and after determining that the EEG signal acquisition device has finished using, drive the micro pump to transport the disinfectant solution in the disinfectant container to each of the gel electrodes through the disinfection pipe, and spray the disinfectant solution to each of the gel electrodes through the nozzle provided at the liquid outlet of the disinfection pipe, so as to clean and disinfect each of the gel electrodes.

9. The device according to claim 8, characterized in that The gel electrode further comprises: a second pressure detection unit; the second pressure detection unit is arranged at a position where the gel area is connected to the conductive sheet, and the controller is respectively connected to the second pressure detection unit for communication; The second pressure detection unit is used to detect the current pressure information in the gel area, and determine whether the gel area is full of medium liquid according to the current pressure information in the gel area, and if not, send a signal indicating that the gel area is not full of medium liquid to the controller; The controller is used to drive the micro pump to transport the medium liquid in the medium liquid container to the gel area via the injection pipeline according to the received signal indicating that the gel area is not filled with the medium liquid.

10. The device according to claim 1, characterized in that The disinfectant container is provided with a disinfectant injection port. When the disinfectant in the disinfectant container is insufficient, disinfectant is injected into the disinfectant container through the disinfectant injection port.

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