Electrical stimulation device

Abstract

The embodiment of the present application provides an electric stimulation device, which comprises a base, a positioning member and two electrodes, the positioning member is connected with the base, the positioning member has a positioning groove for positioning a nerve, the positioning groove extends along a first direction; the two electrodes are both arranged on the base, at least part of the orthographic projection of each electrode on a preset plane is coincident with the orthographic projection of the positioning groove on the preset plane, and at least one of the two electrodes is movably connected with the base, so as to adjust the distance between the corresponding electrode and the positioning groove in a second direction; the first direction and the second direction have an included angle, and the preset plane is perpendicular to the second direction. The electric stimulation device can adapt to electric stimulation treatment of nerves with different diameters.

Description

Technical Field

[0001] This invention relates to the field of electrical stimulation technology, and more specifically, to an electrical stimulation device. Background Technology

[0002] With the development of electrophysiological technology, electrical stimulation, as an important part of neuroelectrophysiology, is widely used in various experiments. Currently, the commonly used nerve stimulation electrodes are protective electrodes, which are hook-shaped with an insulating acrylic glass structure on the back and a copper bipolar electrode inside the hook. The insulating layer on the back of this electrode provides some protection, but due to its fixed shape and the fact that there is an insulating layer only on one side, it still has many inconveniences in use.

[0003] The study found that existing electrical stimulation devices have the following drawbacks when in use:

[0004] Existing electrical stimulation devices are inconvenient to use. Summary of the Invention

[0005] The object of the present invention includes, for example, providing an electrical stimulation device that is more convenient to use and adaptable to the electrical stimulation of nerves of different diameters.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] An embodiment provides an electrical stimulation device, comprising:

[0008] The device comprises a base, a positioning element, and two electrodes. The positioning element is connected to the base and has a positioning groove for locating nerves, which extends along a first direction. Both electrodes are disposed on the base, and at least a portion of the orthographic projection of each electrode onto a preset plane coincides with the orthographic projection of the positioning groove onto the preset plane. At least one of the two electrodes is movably connected to the base to adjust the distance between the corresponding electrode and the positioning groove in a second direction. The first direction and the second direction have an angle between them, and the preset plane is perpendicular to the second direction.

[0009] In an alternative implementation, at least one of the two electrodes is detachably connected to the base.

[0010] In an optional embodiment, the electrical stimulation device further includes a mounting element movably connected to a base, one of the two electrodes being connected to the mounting element, and the mounting element being movable relative to the base to adjust the distance between the corresponding electrode and the positioning groove in a second direction.

[0011] In an optional embodiment, the base is provided with a first through hole extending in a second direction, and the mounting member slides in the first through hole; the electrical stimulation device further includes a power connector, which includes a connected conductive part and an insulating part, the mounting member is provided with a second through hole, the insulating part is inserted into the second through hole and blocks one end of the second through hole, the electrode is inserted into the second through hole and electrically connected to the conductive part; when the electrode slides relative to the base, the end of the electrode away from the power connector can extend out of the first through hole.

[0012] In an optional embodiment, the first through hole includes a first hole segment and a second hole segment that are connected. The mounting member is slidably engaged with the first hole segment, and the electrode is slidably engaged with the second hole segment. When the electrode slides relative to the second hole segment, the end of the electrode can extend out of the second hole segment away from the end of the first hole segment. A sealing member is provided between the electrode and the second hole segment.

[0013] In an optional embodiment, the electrical stimulation device further includes a guide member inserted into the first through hole. The guide member is provided with a guide hole, and an electrode is inserted into the guide hole with the electrode extending out of the guide hole away from the end of the power connector.

[0014] In an alternative implementation, at least one of the two electrodes is movably connected to the base to adjust the distance between the two electrodes in a first direction.

[0015] In an alternative implementation, at least one of the two electrodes is slidably engaged with the base to adjust the distance between the two electrodes in a first direction.

[0016] In an optional embodiment, the width of at least a portion of the positioning groove gradually increases along the direction from the opening of the positioning groove to the bottom of the positioning groove.

[0017] In an optional embodiment, the base is provided with a first protrusion and a first recess that cooperate with each other, and adjacent electrical stimulation devices are connected and engaged through the corresponding first protrusion and first recess.

[0018] The beneficial effects of the embodiments of the present invention include, for example:

[0019] In summary, this embodiment provides an electrical stimulation device for stimulating animal nerves. During use, the electrodes are first adjusted to move them away from the positioning groove, increasing the distance between the electrodes and the groove in the second direction. When the electrode tip is adjusted so that it does not extend into the positioning groove, the adjustment can be stopped. In this state, the electrodes do not occupy the space of the positioning groove, maximizing the usable space and facilitating nerve positioning. Then, the electrodes are adjusted again to bring them closer to the positioning groove, gradually decreasing the distance between the electrodes and the groove in the second direction until the electrodes contact the nerve. The power is then turned on, and the two electrodes and the nerve between them form a circuit for electrical stimulation testing. When positioning the nerve, the large usable space of the positioning groove allows the nerve to easily enter, and the absence of electrodes extending into the groove avoids nerve damage during entry, making the operation safer and more reliable. Furthermore, the electrode position can be adjusted according to nerve diameters to ensure close contact between the electrodes and the nerve, adapting to electrical stimulation of nerves of different diameters and thus having a wide range of applications. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the electrical stimulation device provided in this embodiment.

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the electrical stimulation device provided in this embodiment from another perspective;

[0023] Figure 3 This is an exploded structural diagram of the base provided in this embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of the mounting component provided in this embodiment;

[0025] Figure 5 This is a schematic diagram of the guide component provided in this embodiment;

[0026] Figure 6 This is a schematic diagram of the power connector provided in this embodiment;

[0027] Figure 7 This is a schematic diagram of the electrode structure provided in this embodiment;

[0028] Figure 8This is a schematic diagram of the assembly structure of the electrodes, mounting components, guide components, and power connector provided in this embodiment;

[0029] Figure 9 This is a structural schematic diagram of the positioning component provided in this embodiment.

[0030] icon:

[0031] 001-Electrical stimulation device; 100-Base; 110-First substrate; 101-First through hole; 111-First hole segment; 112-First sub-hole segment; 113-First fixing hole; 114-Second fixing hole; 115-First sealing groove; 120-Second substrate; 121-Second hole segment; 122-Second sub-hole segment; 123-Third fixing hole; 124-Fourth fixing hole; 125-Second sealing groove; 130-First sealing element; 140-Second Seal; 150- Bolt; 160- First protrusion; 170- First recess; 200- Positioning element; 210- Positioning groove; 220- Fifth fixing hole; 300- Electrode; 310- Connecting end; 320- Conductive end; 330- Locking block; 400- Mounting element; 410- Second through hole; 500- Guide element; 510- Guide hole; 600- Power connector; 610- Insulating part; 620- Conductive part; 630- Wire; 700- Sealing ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Unless otherwise specified, the first direction described in the following embodiments refers to Figure 1 The first direction is parallel to the line ab, and the second direction is parallel to the line cd. The first direction is perpendicular to the second direction. Obviously, in other embodiments, the ab direction and the cd direction may not be perpendicular.

[0039] Please see Figure 1 and Figure 2 This embodiment provides an electrical stimulation device 001 for stimulating animal nerves. The electrical stimulation device 001 can be used alone or in combination. Each electrical stimulation device 001 can be adjusted according to the diameter of the nerve to be stimulated, and has a wide range of applications.

[0040] Please see Figure 1 and Figure 2 The electrical stimulation device 001 provided in this embodiment includes a base 100, a positioning member 200, and two electrodes 300. The positioning member 200 is connected to the base 100 and has a positioning groove 210 for positioning nerves, which extends along a first direction. Both electrodes 300 are disposed on the base 100. The orthographic projection of each electrode 300 on a preset plane at least partially coincides with the orthographic projection of the positioning groove 210 on the preset plane. At least one of the two electrodes 300 is movably connected to the base 100 to adjust the distance between the corresponding electrode 300 and the positioning groove 210 in a second direction. The first direction and the second direction have an angle, wherein the angle between the first direction and the second direction is not 0° or 180°, that is, the first direction and the second direction have an acute angle or an obtuse angle. The second direction is perpendicular to the preset plane.

[0041] This embodiment provides an electrical stimulation device 001 for stimulating animal nerves. In use, the electrode 300 is first adjusted to move it away from the positioning groove 210, increasing the distance between the electrode 300 and the positioning groove 210 in the second direction. When the end of the electrode 300 is adjusted so that it does not extend into the positioning groove 210, the adjustment operation can be stopped. In this state, the electrode 300 does not occupy the space of the positioning groove 210, maximizing the usable space area of ​​the positioning groove 210, facilitating nerve positioning within it. Then, the electrode 300 is adjusted again to move closer to the positioning groove 210, gradually decreasing the distance between the electrode 300 and the positioning groove 210 in the second direction until the electrode 300 contacts the nerve. Then, the power is turned on, and the two electrodes 300 and the nerve between them form a circuit, thereby performing an electrical stimulation experiment. When locating a nerve, the positioning groove 210 has a large usable space, making it easy for the nerve to enter the positioning groove 210. Furthermore, the electrode 300 does not extend into the positioning groove 210, thus avoiding damage to the nerve during the process of the nerve entering the positioning groove 210. This makes the operation safer and more reliable. Moreover, the position of the electrode 300 can be adjusted according to the nerve diameter, so that the electrode 300 is in close contact with the nerve. This adapts to the electrical stimulation operation of nerves of different diameters and has a wide range of applications.

[0042] Please see Figure 3 In this embodiment, optionally, the base 100 includes a first base 110 and a second base 120 connected together. The base 100 is provided with a first through hole 101, which extends along a second direction and simultaneously penetrates the first base 110 and the second base 120.

[0043] Optionally, the first through hole 101 includes a first hole segment 111 and a first sub-hole segment 112 disposed on the first base 110. The first hole segment 111 and the first sub-hole segment 112 communicate with each other. The first hole segment 111 is elongated and extends along a first direction. The second hole segment 121 is cylindrical. The diameter of the first sub-hole segment 112 is larger than the length of the first hole segment 111. The first base 110 is also provided with a first fixing hole 113 and a second fixing hole 114. Both the first fixing hole 113 and the second fixing hole 114 extend along a second direction and are located on both sides of the first through hole 101 in its extending direction.

[0044] Furthermore, a first sealing groove 115 is provided on one side of the first substrate 110, communicating with the end of the first hole segment 111 away from the first sub-hole segment 112, and the first sealing groove 115 extends along a first direction. Optionally, the number of first sealing grooves 115 is at least three segments; in other words, each first hole segment 111 has a first sealing groove 115 on both sides of its length direction.

[0045] Optionally, the first through hole 101 further includes a second hole segment 121 and a second sub-hole segment 122 disposed on the second substrate 120. The second hole segment 121 and the second sub-hole segment 122 are connected. The second hole segment 121 is elongated and extends along a first direction. The second sub-hole segment 122 is cylindrical, and the diameter of the second sub-hole segment 122 is greater than the length of the second hole segment 121. Optionally, the length of the first hole segment 111 is greater than the length of the second hole segment 121, and the diameter of the first sub-hole segment 112 is equal to the diameter of the second sub-hole segment 122. The second substrate 120 is also provided with a third fixing hole 123 and a fourth fixing hole 124, both of which extend along a second direction and are located on both sides of the second sub-hole segment 122 along its radial direction.

[0046] Furthermore, a second sealing groove 125 is provided on one side of the second substrate 120, communicating with the end of the second hole segment 121 away from the second sub-hole segment 122, and the second sealing groove 125 extends along the first direction. Optionally, the number of second sealing grooves 125 is at least three segments; in other words, each second hole segment 121 has a second sealing groove 125 on both sides of its extending direction.

[0047] Please combine Figure 1 Optionally, the base 100 further includes a first sealing element 130 and a second sealing element 140. The first sealing element 130 is provided with a first positioning hole (not shown). The first sealing element 130 is slidably engaged with the first sealing groove 115, and the first sealing element 130 is also interference-fitted with the first sealing groove 115 to achieve a seal between the two in a relatively static state, thereby preventing the external environment from communicating with the first hole segment 111 through the first sealing groove 115. In other words, the first sealing element 130 can slide relative to the first sealing groove 115 in the extending direction of the first sealing groove 115, and the first sealing element 130 always maintains a sealed state with the first sealing groove 115 when sliding or stationary.

[0048] Optionally, the second seal 140 is provided with a second positioning hole (not shown). The second seal 140 is slidably engaged with the second sealing groove 125, and the second seal 140 is also interference-fitted with the second sealing groove 125 to achieve a seal between the two in a relatively static state, thereby preventing the external environment from communicating with the second hole segment 121 through the second sealing groove 125. In other words, the second seal 140 can slide relative to the second sealing groove 125 in the extending direction of the second sealing groove 125, and the second seal 140 always maintains a sealed state with the second sealing groove 125 when sliding or stationary.

[0049] Optionally, both the first seal 130 and the second seal 140 can be made of rubber. There are two of each of the first seal 130 and the second seal 140.

[0050] The base 100 provided in this embodiment uses bolts 150 to simultaneously pass through the first fixing hole 113 and the third fixing hole 123, thereby fixing the first base 110 and the second base 120 into one unit, and the first sub-hole segment 112 and the second sub-hole segment 122 are connected. Optionally, a sealing ring 700 is provided at the contact position between the bolt 150 and the first base 110, thereby blocking the seam between the external environment and the first sub-hole segment 112 and the second sub-hole segment 122.

[0051] In this embodiment, it should be noted that there are two first hole segments 111, which are arranged at intervals along the first direction. The two first hole segments 111 correspond to the two first positioning holes on the first sealing member 130, and the paired first hole segments 111 and first positioning holes allow one of the two electrodes 300 to pass through. Correspondingly, there are two second hole segments 121, which correspond to the two second positioning holes on the two second sealing members 140, and the paired second hole segments 121 and second positioning holes allow the other of the two electrodes 300 to pass through.

[0052] Please see Figure 1 and combination Figures 4-6 In this embodiment, optionally, the electrical stimulation device 001 further includes a mounting member 400, a guide member 500, and a power connector 600. The guide member 500 is slidably engaged with the mounting member 400 along a second direction, and the guide member 500 is used to mount the electrode 300. The power connector 600 is used to electrically connect to the electrode 300.

[0053] It should be noted that each electrode 300 corresponds to a mounting piece 400, a guide piece 500, and a power connector 600. In this embodiment, the installation of one electrode 300 with one mounting piece 400, one guide piece 500, and one power connector 600 is used as an example for explanation.

[0054] Optionally, the mounting 400 is provided with a second through hole 410 extending in a second direction.

[0055] Optionally, the guide 500 is provided with a guide hole 510 extending in the second direction.

[0056] Optionally, the power connector 600 includes an insulating portion 610, a conductive portion 620, and a wire 630 wrapped with an insulating layer. The insulating portion 610 is connected to the conductive portion 620, and the insulating portion 610 covers the portion of the conductive portion 620 exposed outside the base 100 to insulate the conductive portion 620 from the external environment. The wire 630 is electrically connected to the conductive portion 620, and the insulating layer outside the wire 630 can be integrally formed with the insulating portion 610. The wire 630 is used for electrical connection to a power source.

[0057] Please see Figure 7 and Figure 8 In this embodiment, when the electrode 300 is assembled onto the base 100, the electrode 300 is first inserted into the guide hole 510 of the guide member 500, with both ends of the electrode 300 extending out of the guide hole 510. In other words, the electrode 300 has a conductive end 320 for contacting the animal's nerves and a connecting end 310 for electrical connection with the power connector 600, with the connecting end 310 and the conductive end 320 extending out of the guide hole 510. Then, a locking block 330 is fitted onto the electrode 300, and the locking block 330 is fixedly connected to the electrode 300, with an interference fit between the locking block 330 and the guide hole 510, thereby achieving a fixed connection between the electrode 300 and the guide member 500. Furthermore, the locking block 330 and the electrode 300 can be removed from the guide hole 510, thereby achieving a detachable connection between the electrode 300 and the guide member 500 for easy replacement of the electrode 300. Then, a sealing ring 700 is provided on the guide member 500. The sealing ring 700 is sleeved on the conductive end 320 of the electrode 300 and fixedly connected to the guide member 500, thereby blocking the port of the guide hole 510 on the guide member 500 through which the conductive end 320 of the electrode 300 protrudes. Then, the guide member 500 is connected to the mounting member 400 to which the power connector 600 is inserted. The conductive part 620 is inserted into the second through hole 410 of the mounting member 400, and the insulating part 610 blocks one end of the second through hole 410. The guide member 500 is inserted from the other end of the second through hole 410 and the connecting end 310 of the electrode 300 is inserted into the conductive part 620 to achieve electrical connection between the two. Thus, the installation of the electrode 300, the mounting member 400, and the guide member 500 is completed.

[0058] Then, the mounting member 400 is inserted into the corresponding first hole 111 on the first base 110. The mounting member 400 and the first hole 111 are in clearance fit, and the mounting member 400 can move relative to the base 100 along the first direction and the second direction. The mounting member 400 passes through the first positioning hole on the first sealing member 130 connected to the base 100. The mounting member 400 and the first sealing member 130 are in sliding fit along the second direction, and the mounting member 400 and the first sealing member 130 are in sealed connection. At the same time, the electrode 300 extends from the second positioning hole on the corresponding second sealing member 140 and the second hole 121 on the second base 120. The electrode 300 is in sealed fit with the second sealing member 140, and the electrode 300 is in clearance fit with the second hole 121. When the mounting member 400 slides along the second direction, it drives the electrode 300 to move to adjust the distance between the conductive end 320 and the positioning groove 210, and the conductive end 320 can retract into the second hole 121. Since the mounting component 400 is clearance-fitted with the first hole segment 111 and the electrode 300 is clearance-fitted with the second hole segment 121, one of the first seal 130 and the second seal 140 can be operated to slide along the first direction, thereby driving the mounting component 400 to move, and ultimately driving the electrode 300 to move, thereby adjusting the distance between the two electrodes 300 to stimulate different positions of the animal's nerves.

[0059] It should be noted that during the sliding process of the first sealing member 130 and the second sealing member 140 along the first direction, the first sealing member 130 always remains in the state of blocking the first hole segment 111, and the second sealing member 140 always remains in the state of blocking the second hole segment 121. This avoids the non-conductive end 320 of the electrode 300 from contacting the surrounding tissue of the nerve to be stimulated during electrical stimulation, thus preventing electrical stimulation of the surrounding tissue and ensuring more accurate positioning of the electrical stimulation. In other words, when the electrical stimulation device 001 provided in this embodiment is implanted into an animal to stimulate the animal's nerves, the entire device, except for the conductive end 320, is insulated from the animal tissue to ensure the accuracy of the electrical stimulation position.

[0060] Please see Figure 9 In this embodiment, optionally, the width of at least a portion of the positioning groove 210 on the positioning member 200 gradually increases along the direction from the opening of the positioning groove 210 to the bottom of the positioning groove 210. In other words, at least a portion of the positioning groove on the positioning member 200 has a constriction. After the stimulating nerve passes through the constriction and approaches the bottom of the positioning groove 210 to enter the positioning groove 210, the nerve is not easy to come out of the positioning groove 210 from the constriction, and the nerve is not easy to displace, which facilitates subsequent electrical stimulation.

[0061] Optionally, the positioning groove 210 is an arc-shaped groove, and the cross-sectional shape of the positioning groove 210 is an arc. It should be noted that the positioning groove 210 has a centerline extending along its length, the axis of the electrode 300 is perpendicular to the centerline, and the plane defined by the axis of the electrode 300 and the centerline is perpendicular to a preset plane.

[0062] Optionally, the positioning member 200 is also provided with a fifth fixing hole 220. Part of the positioning member 200 is inserted into the fourth fixing hole 124 of the second base 120, and the bolt 150 passes through the second fixing hole 114 and the fourth fixing hole 124 in sequence and is screwed into the fifth fixing hole 220, thereby realizing the connection between the base 100 and the positioning member 200.

[0063] Obviously, in other embodiments, the positioning member 200 and the base 100 can be connected by other connection methods, or the positioning member 200 and the base 100 can be integrally formed.

[0064] In other embodiments, the base 100 is further provided with mutually cooperating first protrusions 160 and first recesses 170, and adjacent electrical stimulation devices 001 are connected by corresponding first protrusions 160 and first recesses 170. In other words, when multiple electrical stimulation devices 001 need to be used together, the first protrusions 160 and first recesses 170 on each electrical stimulation device 001 are used to connect two adjacent electrical stimulation devices 001, thereby combining multiple electrical stimulation devices 001 into one unit for easy use. Optionally, the mutually cooperating first protrusions 160 and first recesses 170 are interference fits to improve the stability of adjacent electrical stimulation devices 001.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electrical stimulation device, characterized by include: The device comprises a base, a positioning element, and two electrodes. The positioning element is connected to the base and has a positioning groove for locating nerves, the positioning groove extending along a first direction. Both electrodes are disposed on the base, and at least a portion of the orthographic projection of each electrode onto a preset plane coincides with the orthographic projection of the positioning groove onto the preset plane. At least one of the two electrodes is movably connected to the base to adjust the distance between the corresponding electrode and the positioning groove in a second direction. The first direction is perpendicular to the second direction, and the second direction is perpendicular to the preset plane. The base also includes a first sealing element and a second sealing element. The first sealing element is provided with a first positioning hole. The first sealing element slides with the first sealing groove and is also interference-fitted with the first sealing groove to achieve sealing between the two in a relatively static state, thereby preventing the external environment from communicating with the first hole section through the first sealing groove. The second sealing element is provided with a second positioning hole. The second sealing element and the second sealing groove are slidably fitted together, and the second sealing element and the second sealing groove are also interference fitted together. The two can be sealed in a relatively static state, thereby preventing the external environment from communicating with the second hole section through the second sealing groove. The width of at least a portion of the positioning groove on the positioning member gradually increases along the direction from the opening of the positioning groove to the bottom of the positioning groove. The positioning groove is an arc-shaped groove, and the cross-sectional shape of the positioning groove is an arc. The positioning groove has a centerline extending along its length, the axis of the electrode is perpendicular to the centerline, and the plane defined by the axis of the electrode and the centerline is perpendicular to a preset plane.

2. The electrical stimulation device according to claim 1, characterized in that: At least one of the two electrodes is detachably connected to the base.

3. The electrical stimulation device according to claim 1, characterized in that: The electrical stimulation device further includes a mounting component movably connected to the base, one of the two electrodes being connected to the mounting component, and the mounting component being movable relative to the base to adjust the distance between the corresponding electrode and the positioning groove in the second direction.

4. The electrical stimulation device according to claim 3, characterized in that: The base is provided with a first through hole extending along the second direction, and the mounting member slides in conjunction with the first through hole; the electrical stimulation device further includes a power connector, the power connector including a connected conductive part and an insulating part, the mounting member is provided with a second through hole, the insulating part is inserted into the second through hole and blocks one end of the second through hole, the electrode is inserted into the second through hole and electrically connected to the conductive part; when the electrode slides relative to the base, the end of the electrode away from the power connector can extend out of the first through hole.

5. The electrical stimulation device according to claim 4, characterized in that: The first through hole includes a first hole segment and a second hole segment that are connected. The mounting member is slidably engaged with the first hole segment, and the electrode is slidably engaged with the second hole segment. When the electrode slides relative to the second hole segment, the end of the electrode can extend out of the second hole segment away from the first hole segment. A sealing member is provided between the electrode and the second hole segment.

6. The electrical stimulation device according to claim 4, characterized in that: The electrical stimulation device further includes a guide member inserted into the first through hole. The guide member is provided with a guide hole, and the electrode is inserted into the guide hole, with the electrode extending out of the guide hole at one end away from the power connector.

7. The electrical stimulation device according to claim 1, characterized in that: At least one of the two electrodes is movably connected to the base to adjust the distance between the two electrodes in the first direction.

8. The electrical stimulation device according to claim 6, characterized in that: At least one of the two electrodes is slidably engaged with the base to adjust the distance between the two electrodes in the first direction.

9. The electrical stimulation device according to claim 1, characterized in that: The base is provided with a first protrusion and a first recess that cooperate with each other, and adjacent electrical stimulation devices are connected and engaged through the corresponding first protrusion and first recess.

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