Disposable electroencephalogram sensor with glue storage tank
By designing a disposable EEG sensor with glue storage tank, the problem that traditional technology cannot fully reflect the patient's anesthesia status and conductive glue spillover is solved, and more accurate EEG signal collection and anesthesia status monitoring are achieved.
Patent Information
- Application Number
- CN202421020374.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The prior art cannot fully reflect the patient's anesthesia state during clinical anesthesia, and traditional EEG sensors are prone to overflow of conductive glue when using conductive glue, affecting the accuracy of signal acquisition.
A disposable EEG sensor with a rubber storage tank is designed, using an arc-shaped circuit board and multiple electrode sheets to prevent the overflow of conductive glue through the rubber storage tank, and the design of the arc-shaped circuit board is used to achieve the acquisition of EEG signals while the left and right brains.
It realizes a more comprehensive reflection of the patient's EEG activity, provides more accurate monitoring of anesthesia status, avoids the problems of conductive glue spillage and increase in contact resistance of electrode sheets, and improves the accuracy of signal acquisition.
Smart Images
Figure CN222584508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to a disposable electroencephalogram sensor with a glue storage tank. Background Art
[0002] 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.
[0003] In addition, in EEG monitoring, the quality of electrode attachment directly affects the quality and accuracy of signal acquisition. However, when using conductive glue to attach traditional EEG sensors, the conductive glue often overflows, resulting in a decrease in the adhesion between the sensor glue surface and the scalp, or even a loss of adhesion, and a greater contact resistance between the electrode and the scalp. In addition, as the conductive glue is gradually absorbed by the human body during use, the contact resistance between the electrode and the scalp will also gradually increase. These will reduce the accuracy of signal acquisition and lead to biased evaluation results. Utility Model Content
[0004] The purpose of the utility model is to provide a disposable electroencephalogram sensor with a glue storage tank, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:
[0005] A disposable electroencephalogram sensor with a glue storage tank comprises a flexible circuit board and an electrode plug, wherein the flexible circuit board comprises a long strip circuit board and a curved circuit board, one end of the long strip circuit board is integrally connected to the middle of the curved circuit board, and the curved circuit board and the long strip circuit board form an integrated structure similar to a Y shape, the electrode plug is arranged at one end of the long strip circuit board away from the curved circuit board, and a plurality of expansion parts are arranged at intervals along the path of the curved circuit board, and each of the expansion parts is surface-attached with foam, and a mounting groove and a glue storage tank are provided in the middle of the foam, the glue storage tank is located at the edge of the mounting groove, and the glue storage tank is communicated with the mounting groove, and each of the mounting grooves is provided with an electrode sheet, and a sponge sheet is attached to the upper surface of the electrode sheet.
[0006] As a further solution of the utility model: at least 6 expansion parts are arranged at intervals on the arc-shaped circuit board path.
[0007] As a further solution of the utility model: an expansion part is respectively provided in the middle and at both ends of the arc-shaped circuit board, and the long strip circuit board is integrally connected with the expansion part in the middle of the arc-shaped circuit board.
[0008] As a further solution of the utility model: at least one expansion portion is provided between the expansion portion in the middle of the arc-shaped circuit board and the expansion portions at both ends of the arc-shaped circuit board.
[0009] As a further solution of the utility model: two expansion parts are arranged between the expansion part in the middle of the arc-shaped circuit board and the expansion part at one end of the arc-shaped circuit board, and one expansion part is arranged between the expansion part in the middle of the arc-shaped circuit board and the expansion part at the other end of the arc-shaped circuit board.
[0010] As a further solution of the utility model: the foams on the expanded parts at both ends of the arc-shaped circuit board are independently arranged, and the foams on the expanded parts in the middle of the arc-shaped circuit board are connected in sequence.
[0011] The utility model has the following beneficial effects:
[0012] The utility model provides an arc-shaped circuit board, and multiple electrodes are provided on both sides of the arc-shaped circuit board. The electrodes on both sides of the arc-shaped circuit board simultaneously collect the EEG signals of the left and right brains, and can more comprehensively reflect the EEG activities of the patient.
[0013] By providing a glue storage tank, when the curved circuit board is attached to the patient's scalp, the sponge sheet is squeezed, and the excess conductive glue in the sponge sheet is squeezed out, and the squeezed conductive glue flows into the glue storage tank for storage, thereby preventing the conductive glue from overflowing. In addition, during use, as the conductive glue in the sponge sheet is gradually absorbed by the human body, the conductive glue stored in the glue storage tank will be automatically replenished into the sponge sheet to keep the electrode sheet moist, thereby avoiding the conductive glue in the sponge sheet being absorbed by the scalp and not being replenished in time during the monitoring process, which will cause the contact resistance between the electrode sheet and the scalp to gradually increase, thereby reducing the accuracy of the electrode sheet signal acquisition. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings.
[0015] Figure 1 This is a schematic structural diagram of a disposable EEG sensor (without electrode sheet) with a glue storage tank in the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of a disposable EEG sensor (with electrode sheet) with a glue storage tank of the utility model;
[0017] Figure 3 yes Figure 2 A magnified schematic diagram of the structure in the middle.
[0018] In the figure: 1. flexible circuit board; 11. long strip circuit board; 12. curved circuit board; 2. electrode plug; 3. unfolding part; 4. glue storage tank; 5. electrode sheet; 6. sponge sheet; 7. foam; 8. installation slot. DETAILED DESCRIPTION
[0019] 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. Obviously, 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.
[0020] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.
[0021] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0022] Since the commonly used anesthesia monitoring method currently is mainly unilateral EEG signal monitoring, it cannot fully reflect the patient's anesthesia status, which can easily lead to insufficient or excessive anesthesia depth, increase surgical risks and adverse consequences. In addition, when using conductive glue to attach electrodes, conductive glue often overflows, which directly affects the close contact between the electrodes and the scalp and reduces the accuracy of signal acquisition.
[0023] See also Figure 1-3As shown, in order to solve the problems of the existing unilateral EEG sensors, the embodiment of the utility model provides a disposable EEG sensor with a glue storage tank, which adopts a flexible circuit board 1 with left and right sides, and electrode sheets 5 are set on the left and right sides of the flexible circuit board 1. The electrode sheets 5 on the left and right sides simultaneously collect EEG signals of the left and right brains, which can more comprehensively reflect the patient's EEG activity and provide more accurate anesthesia status monitoring. By comparing the EEG signals of the left and right brain regions, the patient's anesthesia depth can be more objectively evaluated, and the dosage and type of anesthetic drugs can be adjusted in time to ensure that the patient is in an appropriate anesthesia state.
[0024] In addition, a foam 7 is arranged on the surface of the flexible circuit board 1, and a mounting groove 8 and a glue storage groove 4 are opened in the middle of the foam 7. The glue storage groove 4 is located at the edge of the mounting groove 8, and the glue storage groove 4 is connected with the mounting groove 8. An electrode sheet 5 is arranged in each mounting groove 8, and a sponge sheet 6 is attached to the upper surface of the electrode sheet 5. The sponge sheet 6 is pre-injected with conductive glue during production. When in use, the sponge sheet 6 is attached to the surface of the scalp, and the electrode sheet 5 is conductively connected to the surface of the scalp through the conductive glue in the sponge sheet 6. When the sponge sheet 6 is pressed to fit the surface of the scalp, the sponge sheet 6 is squeezed, and the conductive glue in the sponge sheet 6 is squeezed out. The extruded conductive glue flows into the glue storage groove 4 for storage, thereby preventing the conductive glue from overflowing during the pressing process.
[0025] It should be noted that the foam 7 surrounding the glue storage groove 4 has a certain thickness, and its thickness can change the amount of glue stored. The thicker the foam 7 is, the more glue can be stored, and the longer the continuous use time is.
[0026] See also Figure 1 As shown, in a specific embodiment, the flexible circuit board 1 includes a long strip circuit board 11 and a curved circuit board 12, one end of the long strip circuit board 11 is integrally connected to the middle of the curved circuit board 12, the curved circuit board 12 and the long strip circuit board 11 form an integrated structure similar to a Y shape, the electrode plug 2 is arranged at one end of the long strip circuit board 11 away from the curved circuit board 12, the flexible circuit board 1 and the curved circuit board 12 can be integrally injection molded, in addition, no less than 6 expansion parts 3 are arranged at intervals along the path of the curved circuit board 12, and each expansion part 3 is surface-attached with foam 7, and a mounting groove 8 and a glue storage groove 4 are opened in the middle of the foam 7, the glue storage groove 4 is located at the edge of the mounting groove 8, and the glue storage groove 4 is connected to the mounting groove 8, and an electrode sheet 5 is arranged in each mounting groove 8, and a sponge sheet is attached to the upper surface of the electrode sheet 5. The electrode plug 2 includes a verification electrode plug and an electrode contact. The verification electrode plug is electrically connected to the anesthesia depth monitor collection socket interface; the electrode contact is electrically connected to the electrode sheet 5 to obtain EEG parameters and waveforms, thereby monitoring, diagnosing and treating the patient's brain and nervous system diseases. The connection method between the electrode plug 2, the electrode sheet 5 and the monitor is a prior art and will not be repeated here.
[0027] See also Figure 1 As shown, in a specific embodiment, an expansion portion 3 is provided in the middle and at both ends of the curved circuit board 12, respectively. The expansion portion 3 can increase the contact area with the scalp to ensure the fit and comfort with the head surface. The long circuit board 11 is integrally connected with the expansion portion 3 in the middle of the curved circuit board 12, which not only ensures that the long circuit board 11 and the curved circuit board 12 are integrally connected in the middle, but also improves the flexibility of the connection.
[0028] It should be noted that at least one expansion portion 3 is provided between the expansion portion 3 in the middle of the arc circuit board 12 and the expansion portions 3 at both ends of the arc circuit board 12, so that when using the utility model, the number of electrode sheets 5 can be increased and the data collection accuracy can be improved.
[0029] Furthermore, it can be specifically allowed to set two expansion parts 3 between the expansion part 3 in the middle of the curved circuit board 12 and the expansion part 3 at one end of the curved circuit board 12, and set one expansion part 3 between the expansion part 3 in the middle of the curved circuit board 12 and the expansion part 3 at the other end of the curved circuit board 12, to form a bilateral EEG sensor with six electrode sheets 5. Of course, the number of expansion parts 3 is not limited to six, but can also be seven or more, depending on the actual situation.
[0030] The utility model is provided with an arc-shaped circuit board 12, and at least two electrode sheets 5 are provided on both sides of the arc-shaped circuit board 12. When in use, the left and right sides of the arc-shaped circuit board 12 are attached to the surface of the patient's head. The electrode sheets 5 on the left and right sides of the arc-shaped circuit board 12 simultaneously collect the EEG signals and EMG signals of the left and right brains, which can more comprehensively reflect the patient's EEG activity and provide more accurate anesthesia status monitoring. By comparing the EEG signals of the left and right brain regions, the patient's anesthesia depth can be more objectively evaluated, and the dosage and type of anesthetic drugs can be adjusted in time to ensure that the patient is in an appropriate anesthesia state.
[0031] In addition, when the curved circuit board 12 is attached to the patient's scalp, the sponge sheet 6 is squeezed, and the conductive glue in the sponge sheet 6 is squeezed out. The squeezed conductive glue flows into the glue storage tank 4 for storage, thereby preventing the conductive glue from overflowing. On the other hand, during use, as the conductive glue in the sponge sheet 6 is gradually absorbed by the human body, the conductive glue stored in the glue storage tank 4 will replenish itself into the sponge sheet 6, keeping the electrode sheet moist, thereby extending the use time of the electrode sheet 5, and avoiding the conductive glue in the sponge sheet 6 being absorbed by the scalp and not replenished in time during the monitoring process, resulting in the contact resistance between the electrode sheet 5 and the scalp gradually increasing, thereby reducing the accuracy of the signal acquisition of the electrode sheet 5.
[0032] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A disposable electroencephalogram sensor with a glue storage tank, comprising a flexible circuit board (1) and an electrode insert (2), characterized in that: The flexible circuit board (1) comprises a long strip circuit board (11) and a curved circuit board (12); one end of the long strip circuit board (11) is integrally connected to the middle section of the curved circuit board (12); the curved circuit board (12) and the long strip circuit board (11) form a Y-shaped integral structure; the electrode plug (2) is arranged at one end of the long strip circuit board (11) away from the curved circuit board (12); a plurality of expansion parts (3) are arranged at intervals along the path of the curved circuit board (12); each expansion part (3) is surface-attached with foam (7); a mounting groove (8) and a glue storage groove (4) are provided in the middle of the foam (7); the glue storage groove (4) is located at the edge of the mounting groove (8), and the glue storage groove (4) is communicated with the mounting groove (8); each mounting groove (8) is provided with an electrode sheet (5); a sponge sheet (6) is attached to the upper surface of the electrode sheet (5).
2. A disposable electroencephalogram sensor with a glue storage tank according to claim 1, characterized in that: At least six expansion portions (3) are arranged at intervals on the path of the arc-shaped circuit board (12).
3. A disposable electroencephalogram sensor with a glue storage tank according to claim 1 or 2, characterized in that: An expansion portion (3) is respectively provided in the middle and at both ends of the arc-shaped circuit board (12), and the long strip circuit board (11) is integrally connected to the expansion portion (3) in the middle of the arc-shaped circuit board (12).
4. A disposable electroencephalogram sensor with a glue storage tank according to claim 3, characterized in that: At least one expansion portion (3) is provided between the expansion portion (3) in the middle of the arc-shaped circuit board (12) and the expansion portions (3) at both ends of the arc-shaped circuit board (12).
5. A disposable electroencephalogram sensor with a glue storage tank according to claim 4, characterized in that: Two expansion parts (3) are arranged between the expansion part (3) in the middle of the curved circuit board (12) and the expansion part (3) at one end of the curved circuit board (12), and one expansion part (3) is arranged between the expansion part (3) in the middle of the curved circuit board (12) and the expansion part (3) at the other end of the curved circuit board (12).
6. A disposable electroencephalogram sensor with a glue storage tank according to claim 3, characterized in that: The foams (7) on the unfolded parts (3) at both ends of the curved circuit board (12) are independently arranged, and the foams (7) on the unfolded parts (3) in the middle of the curved circuit board (12) are connected in sequence.