Circuit structure of noninvasive double-brain electroencephalogram sensor

Abstract

The utility model discloses a circuit structure of a noninvasive double-brain electroencephalogram sensor, which belongs to the field of anesthesia monitoring and comprises an electrode insert, a verification chip and an electrode contact are arranged in the electrode insert, and the verification chip of the electrode insert is in communication connection with a verification chip interface of an acquisition socket of an anesthesia depth monitor; an electrode contact of the electrode insert is in communication connection with an electrode interface of the anesthesia depth monitor acquisition socket; an electrode contact of the electrode insert is electrically connected with the bias electrode C, the reference ground electrode G, the EEG signal electrode and the EMG signal electrode; the EEG signal electrode comprises a left brain EEG signal electrode LE and a right brain EEG signal electrode RE; the EMG signal electrode comprises a left brain EMG signal electrode LT and a right brain EMG signal electrode RT. By comparing electroencephalogram signals of the left brain area and the right brain area, the anesthesia state of a patient can be evaluated more objectively, accurate anesthesia depth numerical value feedback is provided for anesthetists, and operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of anesthesia monitoring, in particular to a circuit structure of a non-invasive dual-brain electroencephalogram sensor. Background Art

[0002] The effect of anesthesia is the loss of sensation or perception. It can make the patient feel no pain and discomfort when undergoing surgery or invasive procedures. It is generally believed that anesthesia is a reversible functional inhibition of the central and peripheral nervous systems produced by drugs or other methods. The main characteristic of this inhibition is the loss of sensation, especially pain. The nerve site of general anesthesia is the central nervous system; the nerve site of spinal anesthesia is the spinal nerve; surface anesthesia acts on the mucous membrane and skin; local infiltration anesthesia acts on nerve endings; regional block anesthesia acts on nerve endings and nerve trunks; peripheral nerve block anesthesia acts on nerve trunks, nerve plexuses and ganglia; intravenous local anesthesia acts on nerve trunks and nerve endings.

[0003] In the clinical anesthesia process, accurate assessment of the patient's anesthesia depth is crucial to the success of the operation and the safety of the patient. At present, the commonly used anesthesia monitoring method is mainly unilateral EEG signal monitoring. However, this monitoring method has limitations and cannot fully reflect the patient's anesthesia state. It is easy to cause insufficient or excessive anesthesia depth, increase surgical risks and the occurrence of adverse consequences. Utility Model Content

[0004] With regard to the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a circuit structure of a non-invasive dual-brain EEG sensor to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A circuit structure of a non-invasive dual-brain electroencephalogram sensor, comprising an electrode plug, wherein the electrode plug includes a verification chip and electrode contacts, and the verification chip of the electrode plug is electrically connected to the verification chip interface of the acquisition socket of an anesthesia depth monitor;

[0007] The electrode contact of the electrode plug is connected to the electrode interface of the anesthesia depth monitor data collection socket;

[0008] The electrode contacts of the electrode plug are electrically connected to the bias electrode C, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode;

[0009] The bias electrode C is set at the center of the sensor, and the bias electrode C is correspondingly attached to the center of the patient's forehead;

[0010] The reference ground electrode G is arranged at a position close to the bias electrode C, and the reference ground electrode G is correspondingly attached to both sides of the patient's forehead;

[0011] The EEG signal electrodes include a left brain EEG signal electrode LE and a right brain EEG signal electrode RE, which are respectively arranged at the middle positions of both sides of the sensor, and the left brain EEG signal electrode LE and the right brain EEG signal electrode RE are pasted above the left and right eyebrows of the patient;

[0012] The EMG signal electrodes include a left brain EMG signal electrode LT and a right brain EMG signal electrode RT. The left brain EMG signal electrode LT and the right brain EMG signal electrode RT are respectively arranged at the left and right tail ends away from the bias electrode C. The left brain EMG signal electrode LT and the right brain EMG signal electrode RT are attached to the left and right temples of the patient.

[0013] As a further solution of the utility model: the verification chip is a contact IC card chip.

[0014] As a further solution of the utility model: the reference ground electrode G comprises a left reference ground electrode LG, and the left reference ground electrode LG is used to correspond to the left side of the forehead.

[0015] As a further solution of the utility model: the reference ground electrode G comprises a left reference ground electrode LG and a right reference ground electrode RG, and the left reference ground electrode LG and the right reference ground electrode RG are used to be attached to the left and right sides of the forehead respectively.

[0016] As a further solution of the utility model: the wires connecting the electrode contacts of the electrode plug and the bias electrode C, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode are silver-silver chloride conductive wires.

[0017] As a further solution of the utility model: the wires connecting the electrode contacts of the electrode plug and the bias electrode C, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode are made of multi-layer printing, and the wires are protected by a PET substrate and an insulating layer on the top and bottom.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model is used to collect EEG signals from the corresponding brain regions and transmit the signals to an anesthesia depth monitor for processing and analysis. Collecting EEG signals from the left and right brains at the same time can more comprehensively reflect the patient's EEG activity and provide more accurate anesthesia status monitoring. By comparing the EEG signals from the left and right brain regions, the patient's anesthesia status can be evaluated more objectively, providing the anesthesiologist with accurate numerical feedback on the anesthesia depth, avoiding excessive anesthesia and awakening during surgery, reducing anesthesia risks, and improving surgical safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1The present invention is a circuit principle block diagram of a circuit structure of a non-invasive dual-brain EEG sensor disclosed in an embodiment.

[0021] Figure 2 The present invention is a block diagram of the principle of a six-electrode circuit in the circuit structure of a non-invasive dual-brain EEG sensor disclosed in an embodiment.

[0022] Figure 3 The present invention is a schematic diagram of a six-electrode structure in a circuit structure of a non-invasive dual-brain EEG sensor disclosed in an embodiment.

[0023] Figure 4 The present invention is a block diagram of the principle of a seven-electrode circuit in the circuit structure of a non-invasive dual-brain EEG sensor disclosed in an embodiment.

[0024] Figure 5 The present invention is a schematic diagram of a seven-electrode structure in a circuit structure of a non-invasive dual-brain EEG sensor disclosed in an embodiment.

[0025] In the figure: 1. verification chip; 2. bias electrode C; 3. right brain EEG signal electrode RE; 4. left brain EEG signal electrode LE; 5. left brain EMG signal electrode LT; 6. right brain EMG signal electrode RT; 7. left reference ground electrode LG; 8. right reference ground electrode RG. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] See also Figure 1 , a circuit structure of a non-invasive dual-brain electroencephalogram sensor, including an electrode plug, the electrode plug includes a verification chip 1 and an electrode contact inside, the verification chip 1 of the electrode plug is connected to the verification chip 1 interface of the anesthesia depth monitor acquisition socket, the anesthesia depth monitor reads data for electrode model verification, and the electrode can be used only after verification;

[0029] The electrode contacts of the electrode plug are connected to the electrode interface of the anesthesia depth monitor collection socket, and the anesthesia depth monitor reads the data and evaluates the patient's anesthesia depth state after signal processing;

[0030] The electrode contacts of the electrode plug are electrically connected to the bias electrode C2, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode;

[0031] The bias electrode C2 is set in the center. The bias electrode C2 is correspondingly attached to the center of the patient's forehead. The anesthesia depth monitor provides bias drive to the patient through the bias electrode to offset the common mode interference of EEG and improve the signal-to-noise ratio of LT, LE, RT, and RE channels.

[0032] The reference ground electrode G is set at a position close to the bias electrode C2. The reference ground electrode G is correspondingly attached to both sides of the patient's forehead. The anesthesia depth monitor forms a signal loop through the reference ground electrode G to provide a signal reference for the LT, LE, RT, and RE channels.

[0033] The EEG signal electrodes include a right brain EEG signal electrode RT4 and a right brain EEG signal electrode RE3, which are respectively arranged at the middle positions of both sides of the sensor, and the right brain EEG signal electrode RT4 and the right brain EEG signal electrode RE3 are attached above the left and right eyebrows of the patient, and are mainly used to collect EEG signals on the left and right sides of the patient's forehead;

[0034] The EMG signal electrodes include a left brain EMG signal electrode LT5 and a right brain EMG signal electrode RT6. The left brain EMG signal electrode LT5 and the right brain EMG signal electrode RT6 are respectively arranged at the left and right tail ends away from the bias electrode C2. When in use, they are attached to the left and right temples of the patient to mainly collect electromyographic signals on the left and right sides of the patient's forehead.

[0035] Verification chip 1 is a contact IC card chip, which is used to store sensor information such as sensor model, production date, product number, verification code, etc. It needs to be verified by the anesthesia depth monitor to ensure that the model and validity period are correct before it can be used normally to avoid incorrect evaluation results caused by incorrect model or expiration.

[0036] The wires connecting the electrode contacts of the electrode plug and the bias electrode C2, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode are silver-silver chloride conductive wires.

[0037] The wires connecting the verification chip 1 with the bias electrode C2, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode are printed using a multi-layer printing process, and the wires are protected by a PET substrate and an insulating layer above and below.

[0038] Embodiment 1: Figure 2-3As shown, the utility model includes a circuit structure of a six-electrode non-invasive dual-brain EEG sensor, wherein the reference ground electrode G includes a left reference ground electrode LG7, and the left reference ground electrode LG7 is used to correspond to the left forehead, respectively, to monitor the actual subsequent anesthesia, to ensure the safety of the use of the device.

[0039] Embodiment 2: Figure 4-5 As shown, the utility model includes a circuit structure of a seven-electrode non-invasive dual-brain EEG sensor, wherein the reference ground electrode G includes a left reference ground electrode LG7 and a right reference ground electrode RG8, and the left reference ground electrode LG7 and the right reference ground electrode RG8 are used to correspondingly stick to the left and right foreheads, respectively, to subsequently monitor the actual anesthesia and ensure the safety of the use of the device.

[0040] The utility model provides a disposable non-invasive dual-brain EEG sensor, which is characterized in that it includes left and right EEG sensor units, which can contact the surface of the patient's head and are connected to an external anesthesia depth monitoring device through a cable. Each sensor unit includes multiple electrodes for collecting EEG signals from the corresponding brain area and transmitting the signals to the anesthesia depth monitor for processing and analysis.

[0041] The key advantage of this device is that it collects EEG signals from the left and right brains at the same time, which can more comprehensively reflect the patient's EEG activity and provide more accurate monitoring of the anesthesia status. By comparing the EEG signals of the left and right brain regions, the patient's anesthesia status can be evaluated more objectively, providing the anesthesiologist with accurate numerical feedback on the depth of anesthesia, avoiding excessive anesthesia and awakening during surgery, reducing anesthesia risks, and improving surgical safety.

[0042] In addition, the device is designed for single use, avoiding the risks of cross infection and reuse, and improving the hygiene safety of medical equipment.

[0043] The implementation method of the utility model can adopt common biosensor technology and EEG signal processing technology. The design of the sensor unit can be adjusted according to the shape and size of the patient's head to ensure the fit and comfort with the head surface. The part of the cable connected to the external device can adopt a standard cable interface, which is convenient for connection with equipment such as anesthesia depth monitors. The utility model is suitable for various clinical scenarios that require anesthesia monitoring, especially in operating rooms and ICUs. At the same time, the device can also be used in the field of scientific research to help researchers gain a deeper understanding of the mechanism of action of anesthetic drugs and the changing laws of EEG signals.

[0044] The utility model provides a more comprehensive and accurate anesthesia status monitoring device, which is helpful to improve the safety of surgery and the anesthesia quality of patients and has broad application prospects and market potential.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A circuit structure of a non-invasive dual-brain EEG sensor, characterized in that: It includes an electrode plug, the electrode plug includes a verification chip and electrode contacts inside, and the verification chip of the electrode plug is electrically connected to the verification chip interface of the anesthesia depth monitor acquisition socket; The electrode contact of the electrode plug is electrically connected to the electrode interface of the anesthesia depth monitor data collection socket; The electrode contacts of the electrode plug are electrically connected to the bias electrode C, the reference ground electrode G, the EEG signal electrode, and the EMG signal electrode; The bias electrode C is set at the center of the sensor, and the bias electrode C is correspondingly attached to the center of the patient's forehead; The reference ground electrode G is arranged at a position close to the bias electrode C, and the reference ground electrode G is correspondingly attached to both sides of the patient's forehead; The EEG signal electrodes include a left brain EEG signal electrode LE and a right brain EEG signal electrode RE, which are respectively arranged at the middle positions of both sides of the sensor, and the left brain EEG signal electrode LE and the right brain EEG signal electrode RE are pasted above the left and right eyebrows of the patient; The EMG signal electrodes include a left brain EMG signal electrode LT and a right brain EMG signal electrode RT. The left brain EMG signal electrode LT and the right brain EMG signal electrode RT are respectively arranged at the left and right tail ends away from the bias electrode C. The left brain EMG signal electrode LT and the right brain EMG signal electrode RT are attached to the left and right temples of the patient.

2. The circuit structure of a non-invasive dual-brain EEG sensor according to claim 1 is characterized in that: The verification chip is a contact IC card chip.

3. The circuit structure of a non-invasive dual-brain EEG sensor according to claim 2 is characterized in that: The reference ground electrode G comprises a left reference ground electrode LG, and the left reference ground electrode LG is used to correspond to the left side of the forehead.

4. The circuit structure of a non-invasive dual-brain EEG sensor according to claim 2, characterized in that: The reference ground electrode G comprises a left reference ground electrode LG and a right reference ground electrode RG. The left reference ground electrode LG and the right reference ground electrode RG are used to be attached to the left and right sides of the forehead respectively.

5. The circuit structure of a non-invasive dual-brain EEG sensor according to any one of claims 3-4, characterized in that: The wires connecting the electrode contacts of the electrode plug and the bias electrode C, the reference ground electrode G, the EEG signal electrode and the EMG signal electrode are silver-silver chloride conductive wires.

6. The circuit structure of a non-invasive dual-brain EEG sensor according to claim 5, characterized in that: The wires connecting the electrode contacts of the electrode plug and the bias electrode C, the reference ground electrode G, the EEG signal electrode and the EMG signal electrode are made by multi-layer printing, and the wires are protected by a PET substrate and an insulating layer above and below.

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