Electroencephalograph measuring positioning device

Abstract

The application discloses an electroencephalograph measurement positioning device and relates to the technical field of medical instruments in an electroencephalograph room. The electroencephalograph measurement positioning device comprises an electrode cap, a lower jaw belt and measurement electrodes, the electrode cap is a net cap structure formed by connecting belts, a plurality of positioning modules are distributed on the electrode cap, the positioning modules are connected with the connecting belts respectively around the positioning modules, the positioning module comprises a pedestal of a table type, the pedestal is made of a flexible material, a positioning recess is formed in the middle of the pedestal and penetrates through the pedestal along an axial direction, a bearing film is fixedly arranged on the bottom of the positioning recess, a covering film is sealingly arranged on the upper end of the pedestal, conductive paste is filled in the positioning recess, and arc-shaped separation zones are symmetrically arranged on the left and right sides of the bearing film. The electroencephalograph measurement positioning device has the beneficial effects that the conductive paste can be accurately filled between the measurement electrodes and the head, the adaptability of the electrode cap to the heads of different patients can be improved, and the positioning of the measurement electrodes is more accurate.

Description

Technical Field

[0001] This invention relates to the field of medical device technology for electroencephalography (EEG) rooms. Background Technology

[0002] Electroencephalography (EEG) is a modern diagnostic tool that amplifies and records the brain's weak bioelectrical signals into a graph using an EEG scanner. During dynamic EEG monitoring, medical staff need to position the EEG scanner's measuring electrodes precisely on the patient's head. To facilitate electrode placement, electrode caps are currently commonly used on the patient.

[0003] However, traditional electrode caps have two major drawbacks. First, it is inconvenient to fill the space between the measuring electrode and the head with conductive paste after the electrode cap is put on. Applying conductive paste to the head beforehand can lead to inaccurate positioning, and the conductive paste can easily be scraped off when the electrode cap is put on, affecting the subsequent test results. Second, current electrode caps need to be selected according to the patient's head circumference to ensure that the measuring electrode is placed in a standard position. However, this method not only requires the preparation of multiple sizes of electrode caps in advance, but also the fact that some patients' heads cannot perfectly fit the standard electrode cap, resulting in a large deviation between the measuring electrode positioning area and the standard area, affecting the test results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an electroencephalogram (EEG) measurement and positioning device that can conveniently and accurately fill conductive paste between the measuring electrodes and the head, improve the compatibility of the electrode cap with different patients' heads, and make the positioning of the measuring electrodes more accurate.

[0005] The technical solution adopted in this invention is as follows: an electroencephalogram (EEG) measurement and positioning device is provided, including an electrode cap, a chin strap, and measuring electrodes. The electrode cap is a mesh cap structure composed of connecting straps. Several positioning modules are distributed on the electrode cap. The positioning modules are connected to the connecting straps on all four sides.

[0006] The positioning module includes a platform-shaped base made of flexible material; a positioning notch is axially oriented through the center of the base; a carrier membrane is sealed and fixed at the bottom of the positioning notch; a cover membrane is sealed and covered at the top of the base; conductive paste is filled inside the positioning notch; arc-shaped separation zones are symmetrically arranged on the left and right sides of the carrier membrane; the front ends of the two separation zones are relatively abutting each other and are both located in front of the carrier membrane, and the rear ends of the two separation zones are relatively separated and are both located in rear of the carrier membrane; the outer sides of the two separation zones are retention zones, and the area between the two separation zones is an outward movement zone; tear marks are correspondingly distributed between the separation zone and the retention zone, and between the separation zone and the outward movement zone; the front ends of the separation zones are connected to the cover membrane by pull wires; a flexible guide piece is fixed to the rear side of the lower end of the positioning notch; the upper end of the guide piece is higher than the upper end of the conductive paste; the rear end of the outward movement zone is attached to the rear end of the positioning notch, correspondingly bypasses the rear side of the guide piece, and is connected to the cover membrane;

[0007] The measuring electrode is fitted with a flexible mounting sleeve on its upper part; the mounting sleeve is inserted into and fitted with the positioning notch; the measuring electrode is positioned corresponding to the separation zone.

[0008] The connecting strip has a serpentine folded structure; a locking strip is provided at the upper end of the connecting strip along its direction; the contact points between the locking strip and the connecting strip are all heat-welded together.

[0009] To further optimize this technical solution, the edge of the cover film of the EEG measurement and positioning device is heat-sealed to the edge of the base; a tear line is set on the outer side of the upper end of the cover film along the circumferential direction; a handle is fixed on the cover film; the handle is located inside the tear line.

[0010] To further optimize this technical solution, an adhesive layer is distributed circumferentially on the upper end of the base of the EEG measurement and positioning device; an extension cloth is fixed on the upper end of the mounting sleeve; the extension cloth is bonded to the adhesive layer.

[0011] To further optimize this technical solution, the locking band of the EEG measurement and positioning device is made of polyethylene.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. The conductive paste can be pre-sealed in the positioning recess by the carrier film and the cover film, which avoids the lack of conductive paste and eliminates the need to apply conductive paste separately when placing the measuring electrodes, thus saving time.

[0014] The left and right sides of the carrier film are symmetrically provided with arc-shaped separation areas. The front ends of the two separation areas are close to each other and are located on the front side of the carrier film. The rear ends of the two separation areas are separated from each other and are located on the rear side of the carrier film. There are tear marks distributed between the separation area and the retention area, and between the separation area and the outward transfer area. The front ends of the separation areas are connected to the cover film by pull wires. When the cover film is peeled off, the pull wires can be pulled to easily tear the separation area, so that the retention area, separation area and outward transfer area are separated. The rear end of the outward transfer area is connected to the cover film. With the help of peeling off the cover film, the separation area and the outward transfer area can be pulled out from the positioning notch, so that the carrier film is broken and the conductive paste can flow out smoothly to contact the head.

[0015] A flexible guide plate is fixed to the rear side of the lower end of the positioning notch. The upper end of the guide plate is higher than the upper end of the conductive paste. The rear end of the outward movement area is attached to the rear end of the positioning notch and passes around the rear side of the guide plate. This allows the outward movement area to be pulled out along the edge of the positioning notch. This reduces the disturbance to the integrity of the conductive paste and, through the obstruction of the guide plate, reduces the amount of conductive paste that sticks to the outward movement area and is carried out with it, thereby ensuring that the conductive paste is fully filled between the head and the measuring electrode.

[0016] 2. The connecting strap has a serpentine folding structure. A locking strap is set at the upper end of the connecting strap along the direction. The contact points of the locking strap and the connecting strap are heat-welded together. The connecting strap can be lengthened by cutting the locking strap according to the actual size of the patient's head, which improves the fit of the electrode cap to the patient's head. Moreover, the position of the base can be adjusted by lengthening the connecting strap, which facilitates the adjustment of the position of the measuring electrode.

[0017] 3. The locking strap is made of polyethylene, which allows the locking strap itself to stretch slightly, enabling fine-tuning of the base position. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0019] Figure 2 This is a structural diagram of the positioning module.

[0020] Figure 3 This is a schematic diagram of the structure at the bottom of the base;

[0021] Figure 4 This is a schematic diagram of the internal structure of the positioning notch;

[0022] Figure 5 This is an exploded view of the structure when the mounting sleeve aligns with the base.

[0023] In the diagram, 1. Electrode cap; 2. Chin strap; 3. Measuring electrode; 4. Connecting strap; 5. Base; 6. Positioning notch; 7. Carrier film; 8. Covering film; 9. Conductive paste; 10. Separation area; 11. Retention area; 12. Outward displacement area; 13. Tear mark; 14. Guide plate; 15. Mounting sleeve; 16. Locking strap; 17. Tear line; 18. Handle; 19. Adhesive layer; 20. Extension fabric; 21. Pull cord. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-4 As shown, the EEG measurement and positioning device includes an electrode cap 1, a chin strap 2, and measuring electrodes 3. The electrode cap 1 is a mesh cap structure formed by connecting straps 4. Several positioning modules are distributed on the electrode cap 1. The positioning modules are connected to the connecting straps 4 on all four sides. The positioning module includes a platform-shaped base 5. The base 5 is made of flexible material. A positioning recess 6 is axially opened in the middle of the base 5. A bearing membrane 7 is sealed and fixed at the bottom of the positioning recess 6. A covering membrane 8 is sealed and covered at the top of the base 5. Conductive paste 9 is filled in the positioning recess 6. Arc-shaped separation areas 10 are symmetrically arranged on the left and right sides of the bearing membrane 7. The front ends of the two separation areas 10 are opposite to each other. The two separation zones 10 are located abutting against each other and on the front side of the carrier film 7. The rear ends of the two separation zones 10 are relatively separated and located at the rear end of the carrier film 7. The outer side of the two separation zones 10 is the retention zone 11, and the area between the two separation zones 10 is the outward transfer zone 12. Tear marks 13 are distributed between the separation zone 10 and the retention zone 11, and between the separation zone 10 and the outward transfer zone 12, respectively. The front ends of the separation zones 10 are connected to the cover film 8 by the pull wire 21. A flexible guide piece 14 is fixed to the rear side of the lower end of the positioning notch 6. The upper end of the guide piece 14 is higher than the upper end of the conductive paste 9. The rear end of the outward transfer zone 12 is attached to the rear end of the positioning notch 6, passes around the rear side of the guide piece 14, and is connected to the cover film 8.

[0026] like Figure 5 As shown, a flexible mounting sleeve 15 is fitted onto the upper part of the measuring electrode 3; the mounting sleeve 15 is inserted into the positioning recess 6; the measuring electrode 3 corresponds to the separation area 10; the connecting band 4 has a serpentine folded structure; a locking band 16 is correspondingly provided at the upper end of the connecting band 4 along its direction; the contact points of the locking band 16 and the connecting band 4 are all heat-welded; the edge of the cover film 8 is heat-sealed to the edge of the base 5; a tear line 17 is correspondingly provided on the outer side of the upper end of the cover film 8 along the circumferential direction; a handle 18 is fixed on the cover film 8; the handle 18 is located inside the tear line 17; an adhesive layer 19 is distributed circumferentially on the upper end of the base 5; an extension cloth 20 is fixed on the upper end of the mounting sleeve 15; the extension cloth 20 is bonded to the adhesive layer 19; the locking band 16 is made of polyethylene.

[0027] The conductive paste 9 is initially filled into the positioning recesses 6 on each base 5 and sealed and protected by the covering film 8 and the carrier film 7. When placing the measuring electrode 3, it is not necessary to apply the conductive paste 9 separately, saving time. Of course, the electrode cap 1 of this device is a disposable item to meet the requirements of medical and health care. If you want to save costs, the various parts on the electrode cap 1 can be made of environmentally friendly and recyclable materials.

[0028] After the electrode cap 1 is placed on the patient's head, each base 5 needs to be adjusted to the standard area where the measuring electrode 3 should be placed. During this process, if the position of the base 5 deviates significantly from the standard area, the corresponding locking band 16 is cut and the connecting band 4 is lengthened. The position of the base 5 is adjusted according to the needs to determine where to cut the locking band 16 and how many points on the locking band 16 to cut. The more points cut, the longer the connecting band 4 is extended. In this way, the position of the base 5 can be adjusted to match the standard area of ​​the patient's head.

[0029] Of course, in the initial stage, when all locking straps 16 are intact, the distribution of each base 5 is based on a standard distribution according to the small head circumference. Before wearing, according to the patient's actual head circumference, the locking straps 16 can be pre-cut to lengthen the connecting straps 4 at each point, thereby achieving uniform expansion of the electrode cap 1. After wearing, the bases 5 that deviate from the standard area are adjusted to ensure the adaptability of the device. The locking straps 16 are made of polyethylene, which gives them some elasticity. On the one hand, this further improves the adaptability of the electrode cap 1 to the patient's head when wearing it. On the other hand, when the deviation of the base 5 from the standard area is small, it is not necessary to cut the locking straps 16. The appropriate stretchability of the locking straps 16 allows the base 5 to be moved appropriately (the friction between the base 5 and the head ensures the fixation of the base 5 after movement).

[0030] Obviously, the above method not only makes the electrode cap 1 highly adaptable to patients with different head sizes, but also allows for easy adjustment of the position of each measuring electrode 3 after wearing, thereby improving the accuracy of subsequent measurements. Moreover, by lengthening the corresponding connecting strap 4 to adjust a certain base 5, it is less likely to affect other correctly positioned bases 5. This is an effect that the electrode cap 1 composed of traditional silicone straps cannot achieve. This is because the electrode cap 1 composed of traditional silicone straps uses the high elasticity of the silicone strap to achieve wearing. If the position of one measuring electrode 3 is adjusted, the elastic stretch of the silicone strap can easily produce a chain reaction, thereby pulling and shifting the other measuring electrodes 3 that are in the correct position.

[0031] After positioning the base 5 in the correct positions, tear off the cover film 8 (which can be easily torn off along the tear line 17 using the handle 18). When tearing off the cover film 8, the pull line 21 will pull the separation area 10 on the carrier film 7. With the help of the tear line 13, the separation area 10 can be easily torn off, causing the outer displacement area 12 to separate as well. By continuing to peel off the cover film 8, the separation area 10 and the outer displacement area 12 can be pulled out from the positioning recess 6, causing the carrier film 7 to break, and the conductive paste 9 can flow out smoothly to contact the head. During this process, because the separation area 10 itself is small, and the outer displacement area 12 is guided by the guide piece 14 to be close to the edge of the positioning recess 6, the amount of conductive paste 9 brought out when the separation area 10 and the outer displacement area 12 are pulled out from the positioning recess 6 is not large, and will not affect the filling effect between the measuring electrode 3 and the scalp.

[0032] Finally, insert the mounting sleeve 15 of the measuring electrode 3 into the positioning recess 6, so that the measuring electrode 3 can make full contact with the conductive paste 9 below. With the help of the extension cloth 20 and the adhesive layer 19, the measuring electrode 3 is firmly positioned, ensuring the stability of subsequent measurements.

Claims

1. A measurement and positioning device for an electroencephalogram (EEG), comprising an electrode cap (1), a chin strap (2), and measuring electrodes (3), characterized in that: The electrode cap (1) is a mesh cap structure composed of connecting strips (4); several positioning modules are distributed on the electrode cap (1); the positioning modules are connected to the connecting strips (4) on all four sides; The positioning module includes a platform-shaped base (5); the base (5) is made of flexible material; a positioning recess (6) is axially opened in the middle of the base (5); a bearing membrane (7) is sealed and fixed at the bottom of the positioning recess (6); a covering membrane (8) is sealed and covered at the top of the base (5); conductive paste (9) is filled in the positioning recess (6); arc-shaped separation areas (10) are symmetrically arranged on the left and right sides of the bearing membrane (7); the front ends of the two separation areas (10) are relatively abutting each other and are both located in front of the bearing membrane (7), and the rear ends of the two separation areas (10) are relatively separated and are both located in the rear end of the bearing membrane (7); the two separation areas (10) are relatively separated and are both located in the rear end of the bearing membrane (7); The outer side of 0) is the retention area (11), and the area between the two separation areas (10) is the outward transfer area (12); tear marks (13) are distributed between the separation area (10) and the retention area (11), and between the separation area (10) and the outward transfer area (12); the front end of the separation area (10) is connected to the cover film (8) by a pull wire (21); a flexible guide piece (14) is fixed to the rear side of the lower end of the positioning notch (6); the upper end of the guide piece (14) is higher than the upper end of the conductive paste (9); the rear end of the outward transfer area (12) is attached to the rear end of the positioning notch (6), which is connected to the cover film (8) after passing around the rear side of the guide piece (14); The measuring electrode (3) is fitted with a flexible mounting sleeve (15); the mounting sleeve (15) is inserted into the positioning notch (6); the measuring electrode (3) is positioned corresponding to the separation area (10); The connecting strip (4) has a serpentine folding structure; a locking strip (16) is provided at the upper end of the connecting strip (4) along the direction; the contact points of the locking strip (16) and the connecting strip (4) are all heat-welded together.

2. The electroencephalogram (EEG) measurement and positioning device according to claim 1, characterized in that: The edge of the covering film (8) is heat-sealed to the edge of the base (5); a tear line (17) is provided on the outer side of the upper end of the covering film (8) along the circumferential direction; a handle (18) is fixed on the covering film (8); the handle (18) is located inside the tear line (17).

3. The electroencephalogram (EEG) measurement and positioning device according to claim 2, characterized in that: The base (5) has a self-adhesive layer (19) distributed circumferentially on its upper end; the mounting sleeve (15) has an extension cloth (20) fixed on its upper end; the extension cloth (20) is bonded to the self-adhesive layer (19).

4. The electroencephalogram (EEG) measurement and positioning device according to claim 3, characterized in that: The locking strap (16) is made of polyethylene.

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