Wearable electrode sheet and transcranial direct current stimulator thereof

Abstract

The application discloses a wearable electrode sheet and a transcranial direct current stimulation instrument thereof, and belongs to the technical field of the transcranial direct current stimulation instrument, which comprises an elastic band and a clamping assembly, the clamping assembly comprises a fixed frame and an insertion block, and the fixed frame and the insertion block are fixedly connected at two ends of the elastic band respectively; an electrode sheet body is installed on the inner side surface of the fixed frame; wherein when the insertion block is inserted into the fixed frame, the insertion block and the fixed frame are mutually inserted, the elastic band is connected end to end, and meanwhile, the insertion block has a pressing force for pressing the electrode sheet body against the human body, the application can always keep the electrode sheet body and the human body mutually adhered during wearing, and electrode sheet falling is avoided.

Description

Technical Field

[0001] This invention relates to the field of transcranial direct current stimulator technology, specifically to a wearable electrode pad and its transcranial direct current stimulator. Background Technology

[0002] As a typical representative of the biomedical engineering field, the research and development and production process of transcranial direct current stimulators deeply integrates multidisciplinary technologies: in the field of electronic engineering, it is necessary to design high-precision signal generators and adaptive current control modules to achieve precise regulation; in the field of materials science, it is necessary to develop highly conductive flexible electrode materials and develop skin-friendly coatings 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 personalized stimulation parameter optimization models.

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

[0004] In current clinical applications, traditional electrode pads using direct adhesion have significant drawbacks: they are prone to displacement due to changes in body posture, and sweat secretion reduces the adhesiveness of the conductive adhesive, leading to fluctuations in electrode contact impedance or even detachment, which seriously affects the stability of the stimulation current and the therapeutic effect. To solve the above problems, this invention provides a wearable electrode pad and its transcranial direct current stimulation device. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a wearable electrode pad and its transcranial direct current stimulator, which can maintain the electrode pad body in close contact with the human body during wear, preventing the electrode pad from falling off.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a wearable electrode pad and a transcranial direct current stimulator thereof, comprising:

[0007] Elastic band;

[0008] A snap-fit ​​assembly, comprising a fixing frame and an insert block, wherein the fixing frame and the insert block are respectively fixedly connected to both ends of an elastic band;

[0009] Electrode body, the electrode body is mounted on the inner side of the fixed frame;

[0010] When the insert block is inserted into the fixed frame, the insert block and the fixed frame are interlocked, and the elastic band is connected end to end. At the same time, the insert block has a clamping force that presses the electrode sheet body against the human body.

[0011] Preferably, the insert block is fixedly connected with multiple arc-shaped spring plates, and the inner side of the fixing frame is fixedly connected with snap-fit ​​spring plates adapted to the multiple arc-shaped spring plates. When the insert block is inserted into the fixing frame, the multiple arc-shaped spring plates and snap-fit ​​spring plates abut against each other and snap together.

[0012] Preferably, the snap-fit ​​spring plate is composed of two arcs spliced ​​together, and the snap-fit ​​spring plate is corrugated in shape. The ends of the two arcs that are far apart from each other are fixedly connected to the inner wall of the fixed frame, and the ends that are close to each other are fixedly connected and recessed in the direction away from the arc-shaped spring plate.

[0013] The arc of the snap-fit ​​spring plate is tangent to multiple arc-shaped spring plates.

[0014] Preferably, the fixing frame is provided with multiple mounting frames, and the electrode sheet body is mounted on the mounting frames by multiple hooks fixedly connected thereon.

[0015] Preferably, the mounting frame is U-shaped, with its open ends penetrating the outer shell of the fixing frame and fixedly connected to the snap-fit ​​spring plate, and the mounting frame is made of elastic material.

[0016] Preferably, the two ends of the opening of the mounting frame are tilted in opposite directions and are respectively fixedly connected to the two arcs of the snap-fit ​​plate.

[0017] Preferably, the closed end of the mounting frame is corrugated, and the multiple bending points of the mounting frame are in contact with the electrode sheet body.

[0018] Preferably, the hook is shaped like a "┍", with its horizontal sidewall fixedly connected to the electrode plate body, and a protrusion fixedly connected to the lower end of its vertical sidewall, the protrusion being interference-fitted with the mounting frame.

[0019] Preferably, a locking rod is fixedly connected to the side of any of the arc-shaped spring plates away from the locking spring plate, and the locking rod passes through the insert block and engages with the locking slot provided on the side wall of the fixed frame;

[0020] The side wall of the fixed frame is provided with a sliding groove, which is connected to the bayonet. 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 bayonet is fixedly connected to the inner side of the slider.

[0021] A transcranial direct current stimulator includes a stimulator body and the aforementioned wearable electrode pads.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention, through the design of elastic bands, fixing frames, and inserts, achieves the function of continuous contact between the electrode pads and the human body during wear, effectively avoiding the problem of electrode pad displacement or detachment caused by changes in patient posture or sweating during the operation of the stimulator.

[0024] This invention, through the design of a snap-fit ​​spring plate, a mounting frame, and a hook, achieves a situation where, during wear, the snap-fit ​​spring plate and the arc-shaped spring plate press against each other, causing the snap-fit ​​spring plate to undergo elastic deformation. At this time, the mounting frame is pressed against the human body. The corrugated structure at the closed end of the mounting frame can better dynamically adapt to the curvature changes of different parts of the human body, ensuring that the electrode pad body always maintains close contact with the skin. At the same time, the mounting frame is made of elastic material, which can generate corresponding elastic deformation according to the magnitude of the pressing force, reducing the risk of excessive pressure on local skin. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a wearable electrode pad and its transcranial direct current stimulator provided in an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram showing the connection between the elastic band, the insert block, and the fixing frame of the present invention.

[0028] Figure 3 This is an exploded view (first perspective) of the insert block and fixing frame of the present invention.

[0029] Figure 4 This is an exploded view (second perspective) of the insert block and fixing frame of the present invention.

[0030] Figure 5 This is an exploded view of the fixing frame and insert block of the present invention.

[0031] Figure 6 For the present invention Figure 5 Exploded view.

[0032] Figure 7 For the present invention Figure 6 Enlarged view of point A.

[0033] Figure 8 This is an exploded view of the slider and groove of the present invention.

[0034] Figure 9 This is an exploded view of the mounting frame and hook of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Elastic band, 2. Fixing frame, 3. Insert block, 4. Electrode body, 5. Arc-shaped spring plate, 6. Snap-fit ​​spring plate, 7. Mounting frame, 8. Hook, 9. Locking rod, 10. Bayonet, 11. Slide groove, 12. Slider, 13. Top block, 14. Stimulator body. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] This invention provides a wearable electrode pad and a transcranial direct current stimulator thereof, such as Figures 1 to 9 As shown.

[0039] Example 1:

[0040] A wearable electrode pad includes an elastic band 1 made of medical-grade silicone. A fixing frame 2 and an insert 3 are fixedly connected to both ends of the elastic band 1 (the elastic band 1 has different lengths, and the appropriate length can be selected according to the wearing position). An electrode pad body 4 is detachably mounted on the inner side of the fixing frame 2 (the surface of the electrode pad body 4 is coated with a nano-silver-hydrogel composite conductive layer to reduce contact resistance). When worn, the side of the fixing frame 2 facing the human body is the inner side, and the insert 3 is adapted to the fixing frame 2. During use, the elastic band 1 is wrapped around the wearing position, and the insert 3 and fixing frame 2 are inserted into each other. At this time, the elastic band 1 is stretched, and under the elastic force of the elastic band 1, the electrode pad body 4 will adhere to the patient's skin.

[0041] Multiple arc-shaped spring plates 5 are fixedly connected to the insert block 3. A snap-fit ​​spring plate 6, which is adapted to the multiple arc-shaped spring plates 5, is fixedly connected to the inner side of the fixing frame 2. The snap-fit ​​spring plate 6 is composed of two arcs spliced ​​together, and the shape of the snap-fit ​​spring plate 6 is corrugated. The two arcs of the snap-fit ​​spring plate 6 are fixedly connected to the inner wall of the fixing frame 2 at the ends that are far apart from each other, and are fixedly connected at the ends that are close to each other, and are recessed in the direction away from the arc-shaped spring plates 5. When the insert block 3 is inserted into the fixing frame 2, the multiple arc-shaped spring plates 5 and the snap-fit ​​spring plate 6 make tangential contact. At the same time, the arc-shaped spring plates 5 and the snap-fit ​​spring plate 6 will press against each other. The snap-fit ​​spring plate 6 generates a radial pressing force through the elastic deformation generated when pressing against each other, so that the fixing frame 2 and the insert block 3 can be kept in the state of mutual insertion, so that the user can wear the elastic band 1 stably, thereby making the electrode pad body 4 stably fit against the patient's skin.

[0042] Multiple mounting frames 7 are installed on the fixed frame 2. The electrode body 4 is connected to the mounting frame 7 by multiple hooks 8 fixedly connected to it. The hooks 8 are shaped like "┍". Their horizontal sidewalls are fixedly connected to the electrode body 4, and the lower end of the vertical sidewall is fixedly connected to a protrusion. The protrusion is interference-fitted with the mounting frame 7, which can stably install the electrode body 4 on the mounting frame 7.

[0043] The mounting frame 7 is U-shaped, with its two ends of the opening end penetrating the outer shell of the fixing frame 2 and fixedly connected to the snap-fit ​​spring plate 6. The two ends of the opening end of the mounting frame 7 are tilted in opposite directions and fixedly connected to the two arcs of the snap-fit ​​spring plate 6 respectively.

[0044] When the snap-fit ​​spring plate 6 and the arc-shaped spring plate 5 are pressed together, the snap-fit ​​spring plate 6 undergoes elastic deformation, pushing the mounting frame 7 against the patient's skin, thereby allowing the electrode pad body 4 to adhere tightly to the patient's skin.

[0045] Example 2:

[0046] Based on Embodiment 1, in order to enable the electrode body 4 to better conform to the curvature of the human body surface and thus better fit the skin, the closed end of the mounting frame 7 is made corrugated, and multiple bending points of the mounting frame 7 are made to fit the electrode body 4. The corrugated shape of the closed end of the mounting frame 7 can conform to the curvature of the human body part at the contact position and thus enable the electrode body 4 to conform to the curvature of the human body part, thereby ensuring that the electrode body 4 can better fit the patient's skin.

[0047] The mounting frame 7 is made of an elastic material (such as elastic plastic). When the snap-fit ​​spring plate 6 presses the electrode pad body 4 against the patient's skin, the mounting frame 7 will deform accordingly according to the magnitude of the pressing force (the greater the pressing force, the greater the deformation of the mounting frame 7, and the smaller the pressing force, the smaller the deformation). This ensures that the pressure of the electrode pad body 4 on the patient's skin is neither too great nor too small, reducing the risk of excessive pressure on the local skin and ensuring stable adhesion to the patient's skin.

[0048] Example 3:

[0049] Based on Embodiment 2, in order to make the connection between the fixed frame 2 and the insert block 3 more stable, a locking rod 9 is fixedly installed on the side of any arc-shaped spring plate 5 away from the locking spring plate 6. The end of the locking rod 9 away from the arc-shaped spring plate 5 passes through the insert block 3 and is movably locked with the locking slot 10 provided on the fixed frame 2. When the arc-shaped spring plate 5 and the locking spring plate 6 are pressed against each other, the arc-shaped spring plate 5 will produce a corresponding elastic deformation, so that the locking rod 9 can be stably locked with the locking slot 10, and the fixed frame 2 and the insert block 3 can be stably connected together.

[0050] To facilitate the removal of the elastic band 1 after use, a slide groove 11 is provided in the side wall of the fixed frame 2. The slide groove 11 is T-shaped, with its horizontal groove wall communicating with the bayonet 10 and its vertical groove wall communicating with the outside of the fixed frame 2. A slider 12 is slidably installed inside the slide groove 11. The shape of the slider 12 matches the shape of the slide groove 11. A top block 13 that matches the locking rod 9 is fixedly connected to the horizontal side wall of the slider 12. When the operator presses the slider 12 into the slide groove 11, the top block 13 can push the locking rod 9 into the fixed frame 2 and disengage it from the bayonet 10. At this time, the fixed frame 2 and the insert block 3 can be separated.

[0051] When the arc-shaped spring plate 5 and the snap-fit ​​spring plate 6 are pressed together, the snap-fit ​​rod 9 will press against the top block 13. At this time, the top block 13 will provide a certain support force to the corresponding arc-shaped spring plate 5 through the snap-fit ​​rod 9, so that the snap-fit ​​between the arc-shaped spring plate 5 and the snap-fit ​​spring plate 6 can be more stable.

[0052] Example 4:

[0053] A transcranial direct current stimulator includes a stimulator body 14 and the aforementioned wearable electrode pads. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A wearable electrode pad, characterized in that, include: Elastic band (1); The snap-fit ​​assembly includes a fixed frame (2) and an insert (3), which are respectively fixedly connected to both ends of the elastic band (1); Electrode body (4), the electrode body (4) is mounted on the inner side of the fixed frame (2); When the insert (3) is inserted into the fixed frame (2), the insert (3) and the fixed frame (2) are connected to each other, and the elastic band (1) is connected end to end. At the same time, the insert (3) has a pressing force that presses the electrode body (4) against the human body. Multiple arc-shaped spring plates (5) are fixedly connected to the insert (3), and a snap-fit ​​spring plate (6) that is compatible with the multiple arc-shaped spring plates (5) is fixedly connected to the inner side of the fixed frame (2). When the insert (3) is inserted into the fixed frame (2), the multiple arc-shaped spring plates (5) and the snap-fit ​​spring plate (6) abut against each other and snap together. The snap-fit ​​spring plate (6) is composed of two arc splices, and the shape of the snap-fit ​​spring plate (6) is corrugated. The ends of the two arcs that are far apart from each other are fixedly connected to the inner wall of the fixed frame (2), and the ends that are close to each other are fixedly connected and recessed in the direction away from the arc spring plate (5). The arc of the snap-fit ​​spring plate (6) is tangent to multiple arc-shaped spring plates (5).

2. The wearable electrode pad as described in claim 1, characterized in that, The fixed frame (2) is provided with multiple mounting frames (7), and the electrode sheet body (4) is mounted on the mounting frame (7) by multiple hooks (8) fixedly connected thereon.

3. A wearable electrode pad as described in claim 2, characterized in that, The mounting frame (7) is U-shaped, with its two ends of the opening end passing through the outer shell of the fixing frame (2) and fixedly connected to the snap-fit ​​spring plate (6). The mounting frame (7) is made of elastic material.

4. A wearable electrode pad as described in claim 3, characterized in that, The two ends of the opening of the mounting frame (7) are tilted in opposite directions and are fixedly connected to the two arcs of the snap-fit ​​plate (6).

5. A wearable electrode pad as described in claim 2, characterized in that, The closed end of the mounting frame (7) is corrugated, and multiple bending points of the mounting frame (7) are in contact with the electrode sheet body (4).

6. A wearable electrode pad as described in claim 2, characterized in that, The hook (8) is shaped like a "┍". Its horizontal sidewall is fixedly connected to the electrode body (4), and the lower end of the vertical sidewall is fixedly connected to a protrusion. The protrusion is interference-fitted with the mounting frame (7).

7. A wearable electrode pad as described in claim 1, characterized in that, A locking rod (9) is fixedly connected to the side of any of the arc-shaped spring plates (5) away from the locking spring plate (6), and the locking rod (9) passes through the insert (3) and engages with the locking slot (10) provided on the side wall of the fixed frame (2); The side wall of the fixed frame (2) is provided with a sliding groove (11), and the sliding groove (11) is connected to the bayonet (10). The sliding groove (11) is T-shaped. A slider (12) is slidably installed inside the sliding groove (11). The shape of the slider (12) is adapted to the shape of the sliding groove (11), and a top block (13) adapted to the clamp (9) is fixedly connected to the inner side of the slider (12).

8. A transcranial direct current stimulator, comprising a stimulator body (14), characterized in that, It also includes the wearable electrode pad as described in any one of claims 1 to 7.

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