Wearable electrode slice and transcranial direct current stimulator thereof

Abstract

The invention discloses a wearable electrode slice and a transcranial direct current stimulator thereof, and belongs to the technical field of transcranial direct current stimulators, the wearable electrode slice comprises an elastic band and a clamping assembly, the clamping assembly comprises a fixing frame and an insertion block, and the fixing frame and the insertion block are fixedly connected to the two ends of the elastic band respectively; the electrode plate body is mounted on the inner side surface of the fixed frame; when the inserting blocks are inserted into the fixing frames, the inserting blocks and the fixing frames are mutually inserted, the elastic bands are connected end to end, meanwhile, the inserting blocks have abutting force enabling the electrode plate bodies to abut against the human body, the electrode plate bodies can be always kept to be attached to the human body in the wearing process, and the electrode plates are prevented from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of transcranial direct current stimulators, and particularly relates to a wearable electrode patch and a transcranial direct current stimulator thereof. Background Art

[0002] As a typical representative in the field of biomedical engineering, the research and development and production process of transcranial direct current stimulators deeply integrates multi-disciplinary cross technologies: in the field of electronic engineering, it is necessary to design a high-precision signal generator and an adaptive current control module to achieve precise regulation; in the field of materials science, it is necessary to develop a highly conductive flexible electrode material and develop a skin-friendly coating with biocompatibility to improve safety; in the field of neuroscience, it is necessary to combine brain function localization technology and big data analysis to establish an optimized model for personalized stimulation parameters.

[0003] This device uses a non-invasive neuromodulation mechanism and applies a low-intensity direct current of 1-2 mA to the cerebral cortex. Anodic stimulation enhances excitability by depolarizing the resting membrane potential of neurons, while cathodic stimulation inhibits neuronal activity by hyperpolarization. At the same time, it regulates the activity of NMDA receptors and synaptic plasticity to achieve long-term neural function remodeling.

[0004] In current clinical applications, traditional electrode patches have significant defects when using the direct adhesion method: they are prone to displacement due to changes in human body posture, and the conductivity of the conductive adhesive decreases due to sweating, which in turn leads to fluctuations in electrode contact impedance or even detachment, seriously affecting the stability of the stimulation current and the treatment effect. To solve the above problems, the present invention provides a wearable electrode patch and a transcranial direct current stimulator thereof. Summary of the Invention

[0005] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a wearable electrode patch and a transcranial direct current stimulator thereof, which can always keep the electrode patch body in close contact with the human body during wearing to avoid the electrode patch from falling off.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a wearable electrode patch and a transcranial direct current stimulator thereof, including: An elastic band; A clamping component, the clamping component includes a fixed frame and an insertion block, and the fixed frame and the insertion block are respectively fixedly connected to both ends of the elastic band; An electrode patch body, the electrode patch body is installed on the inner side surface of the fixed frame; Wherein, when the insertion block is inserted into the inside of the fixed frame, the insertion block and the fixed frame are mutually inserted, the elastic band is connected end to end, and at the same time, the insertion block has a pressing force to press the electrode patch body against the human body.

[0007] Preferably, a plurality of arc-shaped elastic plates are fixedly connected to the insertion block, and a clamping elastic plate adapted to the plurality of arc-shaped elastic plates is fixedly connected to the inner side surface of the fixed frame. When the insertion block is inserted into the fixed frame, the plurality of arc-shaped elastic plates and the clamping elastic plate are tightly abutted and clamped with each other.

[0008] Preferably, the clamping elastic plate is composed of two arcs spliced together, and the shape of the clamping elastic plate is corrugated. One end of the two arcs away from each other is fixedly connected to the inner wall of the fixed frame, and the end close to each other is fixedly connected and recessed toward the direction away from the arc-shaped elastic plate; The arc of the clamping elastic plate is tangent to the plurality of arc-shaped elastic plates.

[0009] Preferably, a plurality of mounting frames are provided on the fixed frame, and the electrode piece body is mounted on the mounting frames through a plurality of hooks fixedly connected thereto.

[0010] Preferably, the shape of the mounting frame is "U" shaped, and both ends of the open end thereof penetrate through the outer shell of the fixed frame and are fixedly connected to the clamping elastic plate. The material of the mounting frame is an elastic material.

[0011] Preferably, both ends of the open end of the mounting frame are skewed in the direction away from each other, and are respectively fixedly connected to the two arcs of the clamping elastic plate.

[0012] Preferably, the shape of the closed end of the mounting frame is corrugated, and a plurality of bending points of the mounting frame are attached to the electrode piece body.

[0013] Preferably, the shape of the hook is "┍" shaped, its horizontal side wall is fixedly connected to the electrode piece body, and a convex block is fixedly connected to the lower end of the vertical side wall. The convex block is in interference fit with the mounting frame.

[0014] Preferably, a clamping rod is fixedly connected to the side of any one of the arc-shaped elastic plates away from the clamping elastic plate. The clamping rod penetrates through the insertion block and is clamped with a bayonet provided on the side wall of the fixed frame; A sliding groove is provided inside the side wall of the fixed frame, and the sliding groove communicates with the bayonet. The shape of the sliding groove is "T" shaped, and a slider is slidably installed inside the sliding groove. The shape of the slider is adapted to the shape of the sliding groove, and a top block adapted to the clamping rod is fixedly connected to the inner side surface of the slider.

[0015] A transcranial direct current stimulator includes a stimulator body and also includes the wearable electrode piece described above.

[0016] The beneficial effects of the present invention are as follows: Through the settings of the elastic band, the fixed frame and the insertion block, the present invention realizes the function of continuously fitting the electrode piece body with the human body during the wearing process, effectively avoiding the problems of electrode piece displacement or falling off caused by the change of the patient's posture or sweating during the operation of the stimulator.

[0017] Through the provision of a snap spring plate, a mounting frame, and a hook, when worn, the snap spring plate and the arc spring plate are pressed against each other tightly, causing the snap spring plate to undergo elastic deformation. At this time, the mounting frame will be pressed tightly towards the human body. At this time, the corrugated structure at the closed end of the mounting frame can better dynamically adapt to the curvature changes of different human body parts, ensuring that the electrode sheet body always remains in close contact with the skin. At the same time, the material of the mounting frame is made of an elastic material, which can produce corresponding elastic deformation according to the magnitude of the pressing force, reducing the risk of excessive local skin compression. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of a wearable electrode sheet and its transcranial direct current stimulator provided by an embodiment of the present invention.

[0020] Figure 2 Connection schematic diagram of the elastic band, the insertion block, and the fixed frame of the present invention.

[0021] Figure 3 Exploded view of the insertion block and the fixed frame of the present invention (first perspective).

[0022] Figure 4 Exploded view of the insertion block and the fixed frame of the present invention (second perspective).

[0023] Figure 5 Exploded view of the fixed frame and the insertion block of the present invention.

[0024] Figure 6 For the present invention Figure 5 Exploded view.

[0025] Figure 7 For the present invention Figure 6 Enlarged view of part A.

[0026] Figure 8 Exploded view of the slider and the chute of the present invention.

[0027] Figure 9 Exploded view of the mounting frame and the hook of the present invention.

[0028] Explanation of the reference numerals: 1. Elastic band, 2. Fixed frame, 3. Insert block, 4. Electrode sheet body, 5. Arc-shaped elastic plate, 6. Clamping elastic plate, 7. Installation frame, 8. Hook, 9. Clamping rod, 10. Bayonet, 11. Slide groove, 12. Slide block, 13. Top block, 14. Stimulator body. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The present invention provides a wearable electrode sheet and its transcranial direct current stimulator, as Figures 1 to 9 shown.

[0031] Embodiment 1: A wearable electrode sheet includes an elastic band 1. The elastic band 1 is made of medical-grade silicone material. Fixed frames 2 and insert blocks 3 are respectively fixedly connected to both ends of the elastic band 1 (the elastic band 1 has different lengths, and the elastic band 1 with the corresponding length can be selected according to the wearing position). The electrode sheet body 4 is detachably installed on the inner side surface of the fixed frame 2 (the surface of the electrode sheet body 4 is coated with a nano-silver hydrogel composite conductive layer to reduce the contact impedance). When wearing, the side of the fixed frame 2 facing the human body is the inner side surface. The insert block 3 is adapted to the fixed frame 2. When in use, the elastic band 1 is bypassed around the wearing position, and the insert block 3 and the fixed frame 2 are inserted into each other. At this time, the elastic band 1 will be stretched. Under the elastic force of the elastic band 1, the electrode sheet body 4 will fit with the skin of the patient.

[0032] A plurality of arc-shaped elastic plates 5 are fixedly connected to the insert block 3. Clamping elastic plates 6 adapted to the plurality of arc-shaped elastic plates 5 are fixedly connected to the inner side surface of the fixed frame 2. The clamping elastic plate 6 is composed of two arcs spliced together, and the shape of the clamping elastic plate 6 is corrugated. The two arcs of the clamping elastic plate 6 are fixedly connected to the inner wall of the fixed frame 2 at the ends far away from each other, and are fixedly connected at the ends close to each other and are recessed in the direction away from the arc-shaped elastic plate 5. When the insert block 3 is inserted into the fixed frame 2, the plurality of arc-shaped elastic plates 5 and the clamping elastic plate 6 generate tangential contact, and at the same time, the arc-shaped elastic plate 5 and the clamping elastic plate 6 will abut against each other tightly. The clamping elastic plate 6 generates a radial abutting force through the elastic deformation generated when abutting tightly, so that the fixed frame 2 and the insert block 3 can be kept in a state of being inserted into each other, enabling the user to wear the elastic band 1 stably, and thus enabling the electrode sheet body 4 to stably fit with the skin of the patient.

[0033] A plurality of mounting frames 7 are installed on the fixed frame 2. The electrode sheet body 4 is connected to the mounting frame 7 through a plurality of hooks 8 fixedly connected thereto. The hook 8 is in the shape of "┍", its horizontal side wall is fixedly connected to the electrode sheet body 4, and a convex block is fixedly connected to the lower end of the vertical side wall. The convex block is in interference fit with the mounting frame 7, which can stably mount the electrode sheet body 4 on the mounting frame 7.

[0034] The mounting frame 7 is in the shape of "U", and both ends of its open end penetrate through the outer shell of the fixed frame 2 and are fixedly connected to the clamping elastic plate 6. Both ends of the open end of the mounting frame 7 are skewed in the direction away from each other, and are respectively fixedly connected to two arcs of the clamping elastic plate 6.

[0035] When the clamping elastic plate 6 and the arc-shaped elastic plate 5 are tightly pressed against each other, the clamping elastic plate 6 undergoes elastic deformation, and pushes the mounting frame 7 towards the patient's skin, so that the electrode sheet body 4 can closely adhere to the patient's skin.

[0036] Embodiment Two: On the basis of Embodiment One, in order to enable the electrode sheet body 4 to better follow the curvature of the human body surface and generate corresponding deformation so that the electrode sheet body 4 can better fit the skin, the closed end of the mounting frame 7 is set to be corrugated, and the multiple bending points of the mounting frame 7 are in contact with the electrode sheet body 4. The closed end of the mounting frame 7 being set to be corrugated can follow the curvature of the human body part at the contact position and generate corresponding deformation, and then the electrode sheet body 4 can also generate corresponding deformation along with the curvature of the human body part, thereby ensuring that the electrode sheet body 4 can better fit the patient's skin.

[0037] The mounting frame 7 is made of an elastic material (such as elastic plastic). When the clamping elastic plate 6 presses the electrode sheet body 4 towards the patient's skin, the mounting frame 7 will generate corresponding deformation according to the magnitude of the pressing force received (the greater the pressing force received, the greater the deformation generated by the mounting frame 7, and the smaller the pressing force received, the smaller the deformation generated), so as to ensure that the pressure of the electrode sheet body 4 on the patient's skin will not be too large or too small, reducing the risk of excessive local skin compression, and also ensuring stable adhesion to the patient's skin.

[0038] Embodiment Three: On the basis of Embodiment Two, in order to make the connection between the fixed frame 2 and the insertion block 3 more stable, a clamping rod 9 is fixedly installed on one side surface of any arc-shaped elastic plate 5 away from the clamping elastic plate 6. One end of the clamping rod 9 away from the arc-shaped elastic plate 5 penetrates through the insertion block 3 and is movably clamped with a bayonet 10 provided on the fixed frame 2. When the arc-shaped elastic plate 5 and the clamping elastic plate 6 are tightly pressed against each other, the arc-shaped elastic plate 5 will generate corresponding elastic deformation, so that the clamping rod 9 can be stably clamped with the bayonet 10, and the fixed frame 2 and the insertion block 3 are stably connected together.

[0039] After use, to facilitate the removal of the elastic band 1, a chute 11 is provided inside the side wall of the fixed frame 2. The chute 11 is in a "T" shape, and its horizontal groove wall communicates with the bayonet 10. The vertical groove wall penetrates the outer side of the fixed frame 2 and communicates with the outside. A slider 12 is slidably installed inside the chute 11. The shape of the slider 12 is adapted to the shape of the chute 11. A top block 13 adapted to the latch rod 9 is fixedly connected to the horizontal side wall of the slider 12. When the staff presses the slider 12 into the chute 11, the top block 13 can push the latch rod 9 into the fixed frame 2 and disengage from the bayonet 10. At this time, the fixed frame 2 and the insertion block 3 can be separated.

[0040] When the arc-shaped elastic plate 5 and the clamping elastic plate 6 are pressed against each other, the latch rod 9 will press against the top block 13. At this time, the top block 13 will give a certain supporting force to the corresponding arc-shaped elastic plate 5 through the latch rod 9, so that the clamping between the arc-shaped elastic plate 5 and the clamping elastic plate 6 can be more stable.

[0041] Embodiment 4: A transcranial direct current stimulator includes a stimulator body 14 and also includes the above-mentioned wearable electrode patch. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A wearable electrode sheet, characterized in that: include: Elastic band (1); A snap-on assembly, the snap-on assembly comprising a fixing frame (2) and an insert block (3), the fixing frame (2) and the insert block (3) being fixedly connected to two ends of the elastic band (1) respectively; An electrode sheet body (4), wherein the electrode sheet body (4) is mounted on the inner side surface of the fixing frame (2); When the insert block (3) is inserted into the fixing frame (2), the insert block (3) and the fixing frame (2) are plugged into each other, the elastic band (1) is connected end to end, and at the same time, the insert block (3) has a pressing force that presses the electrode sheet body (4) against the human body.

2. A wearable electrode sheet according to claim 1, characterized in that: A plurality of arc-shaped spring plates (5) are fixedly connected to the insert block (3), and a snap-on spring plate (6) adapted to the plurality of arc-shaped spring plates (5) is fixedly connected to the inner side surface of the fixed frame (2); when the insert block (3) is inserted into the fixed frame (2), the plurality of arc-shaped spring plates (5) and the snap-on spring plate (6) are tightly snap-connected to each other.

3. A wearable electrode sheet as claimed in claim 2, characterized in that: The snap-on spring plate (6) is composed of two circular arcs spliced ​​together, and the snap-on spring plate (6) is in a corrugated shape, with the ends of the two circular arcs that are away from each other fixedly connected to the inner wall of the fixed frame (2), and the ends that are close to each other fixedly connected and recessed in a direction away from the arc-shaped spring plate (5); The circular arc of the clamping spring plate (6) is tangent to the plurality of arc-shaped spring plates (5).

4. A wearable electrode sheet as claimed in claim 3, characterized in that: The fixing frame (2) is provided with a plurality of mounting frames (7), and the electrode sheet body (4) is mounted on the mounting frames (7) via a plurality of hooks (8) fixedly connected thereto.

5. A wearable electrode sheet as claimed in claim 4, characterized in that: The mounting frame (7) is in a "U" shape, with both ends of its open end passing through the outer shell of the fixing frame (2) and being fixedly connected to the clamping spring plate (6), and the mounting frame (7) is made of an elastic material.

6. A wearable electrode sheet as claimed in claim 5, characterized in that: Both ends of the opening end of the installation frame (7) are tilted in directions away from each other, and are respectively fixedly connected to two arcs of the clamping spring plate (6).

7. A wearable electrode sheet as claimed in claim 4, characterized in that: The closed end of the installation frame (7) is in a corrugated shape, and a plurality of bending points of the installation frame (7) fit the electrode sheet body (4).

8. A wearable electrode sheet as claimed in claim 4, characterized in that: The hook (8) is in the shape of a "┍"; its lateral side wall is fixedly connected to the electrode sheet body (4); a protrusion is fixedly connected to the lower end of the vertical side wall; the protrusion is interference-fitted with the mounting frame (7).

9. A wearable electrode sheet as claimed in claim 2, characterized in that: A clamping rod (9) is fixedly connected to one side of any of the arc-shaped spring plates (5) away from the clamping spring plate (6), and the clamping rod (9) passes through the insert block (3) and is clamped to a clamping opening (10) provided on the side wall of the fixed frame (2); A slide groove (11) is provided in the side wall of the fixed frame (2), and the slide groove (11) is communicated with the bayonet (10). The shape of the slide groove (11) is "T"-shaped. A slider (12) is slidably mounted inside the slide groove (11). The shape of the slider (12) is compatible with the shape of the slide groove (11), and a top block (13) compatible with the clamping rod (9) is fixedly connected to the inner side surface of the slider (12).

10. A transcranial direct current stimulator, comprising a stimulator body (14), characterized in that: It also includes the wearable electrode sheet according to any one of claims 1 to 9.

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