Electrode identification structure for directional electrode, directional electrode and stimulation system

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an electrode identification structure for a directional electrode, the directional electrode and a stimulation system. The electrode identification structure for the directional electrode comprises an identification sheet and an identification part. The identification sheet is arranged on the direction electrode, and the circumferential radian of the identification sheet is smaller than 240 degrees; the identification part is arranged on the identification sheet and used for identifying the orientation of the stimulation sheet of the direction electrode. According to the electrode identification structure for the direction electrode, after the direction electrode rotates, the identification sheet and the identification part can develop different images in the radiation image, so that each direction of the direction electrode can be in one-to-one correspondence with the images formed by the identification sheet and the identification part in the radiation image; and the judgment precision of a doctor on the orientation of the directional electrode is effectively improved, so that a better treatment effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an electrode marking structure, a directional electrode, and a stimulator for a directional electrode. Background Technology

[0002] Electrical stimulation therapy involves implanting directional electrodes in the patient's body and using high-frequency electrical stimulation to inhibit abnormally active neurons, thereby treating various limb and mental illnesses such as Parkinson's disease, essential tremor, and epilepsy.

[0003] In the prior art, the directional electrode is surrounded by multiple stimulation contacts. During implantation, the stimulation contacts need to be oriented in a specified direction to treat the target point. However, the orientation of the directional electrode during implantation is easily affected by factors such as the precision of operation and the movement of tissues in the patient's body. Therefore, it is necessary to determine the orientation of the directional electrode after implantation in the patient's body in order to adjust the implantation angle of the directional electrode.

[0004] While it is currently possible to obtain image information after the implantation of the directional electrode through radiographic imaging, the directional electrode itself contains metallic materials, which easily produce large artifacts in the radiographic image, resulting in low image resolution and making it difficult to accurately determine the orientation of the directional electrode. Utility Model Content

[0005] The purpose of this invention is to provide an electrode marking structure, a directional electrode, and a stimulator for a directional electrode, which solves the problem of low accuracy in determining the implantation orientation of the directional electrode after implantation in the patient's body in the prior art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides an electrode marking structure for a directional electrode, comprising:

[0008] A marker plate is disposed on the directional electrode, wherein the circumferential curvature of the marker plate is less than 240°;

[0009] A marking section is provided on the marking sheet to indicate the orientation of the stimulation sheet of the directional electrode.

[0010] Optionally, the marking part is a marking hole that passes through the marking sheet, and the marking hole has at least one indicating tip.

[0011] Optionally, the marking hole is a triangular hole along the axial direction of the directional electrode.

[0012] Optionally, the electrode marking structure for the directional electrode further includes:

[0013] The marking ring extends from one end of the marking plate and has a slot that engages with the direction electrode.

[0014] Optionally, the marking part is a marking block, the marking block protrudes from the marking ring, and the marking block and the marking piece are distributed at intervals along the circumference of the marking ring.

[0015] Optionally, the electrode marking structure for the directional electrode further includes:

[0016] A locking ring is disposed at one end of the marking plate and sleeved with the direction electrode.

[0017] Optionally, the marking piece has a first end and a second end along the axial direction of the directional electrode, and the circumferential curvature of the marking piece increases or decreases from the first end to the second end along the axial direction of the directional electrode.

[0018] Secondly, this utility model also provides a directional electrode, which includes:

[0019] support;

[0020] Adhesive layer;

[0021] At least one set of stimulation structures is disposed on the support, and each set of stimulation structures includes multiple stimulation pieces, the stimulation pieces are insulated from each other, and the stimulation pieces are installed on the support and then fixed to the support by the adhesive layer;

[0022] The electrode marking structure for the directional electrode as described in any one of the first aspects is snapped onto the bracket.

[0023] Optionally, the bracket has a positioning block that engages with the electrode marking structure for the directional electrode, the positioning block being at least partially engaged within the slot of the marking ring, so that the electrode marking structure for the directional electrode is limited and fixed.

[0024] Thirdly, this utility model also provides a stimulation system, which includes:

[0025] Stimulator;

[0026] The directional electrode as described in any one of the second aspects, wherein one end of the directional electrode is implanted in the patient's brain and the other end is electrically connected to the stimulator.

[0027] Optionally, the stimulation system further includes an extension wire, through which the stimulator is electrically connected to the directional electrode.

[0028] The beneficial effects of this utility model are:

[0029] Firstly, in radiographic images, the marker film and the marker section both develop different images with each rotation of the directional electrode. The images formed by the marker film and the marker section uniquely determine the orientation of the directional electrode. Therefore, this electrode marking structure for the directional electrode allows both the marker film and the marker section to develop different images in the radiographic image after the directional electrode is rotated. This ensures that each orientation of the directional electrode corresponds one-to-one with the image formed by the marker film and the marker section in the radiographic image, effectively improving the accuracy of the doctor's judgment of the directional electrode's orientation and thus ensuring better treatment results.

[0030] Secondly, during use, the directional electrode can accurately identify the orientation of the stimulation patch through the electrode marking structure used for the directional electrode, ensuring that the stimulation patch is aligned with the treatment target, thereby improving the therapeutic effect of the directional electrode. Furthermore, the electrode marking structure used for the directional electrode can form a one-to-one corresponding image in the radiographic image for each rotation angle of the directional electrode, ensuring that the doctor can accurately determine the orientation of the directional electrode, which is beneficial for improving the therapeutic effect of the directional electrode.

[0031] Thirdly, when using this stimulation system, it can accurately identify the direction in which the directional electrode is implanted in the patient's brain, ensuring that the stimulation patch of the directional electrode is oriented towards the treatment target and that the output energy is concentrated near the treatment target, thereby effectively improving the treatment effect on the patient and reducing the possibility of adverse reactions. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of an electrode marking structure for a directional electrode according to Embodiment 1 of this utility model;

[0033] Figure 2 This is a schematic diagram of an electrode marking structure for a directional electrode according to Embodiment 1 of this utility model;

[0034] Figure 3 This is a schematic diagram of the marking sheet and marking ring of an electrode marking structure for a directional electrode according to Embodiment 1 of this utility model;

[0035] Figure 4 This is a schematic diagram illustrating the change process of the X-ray image during the rotation of the stimulation sheet in an electrode marking structure for a directional electrode according to Embodiment 1 of this utility model.

[0036] Figure 5 This is a schematic diagram of the structure of the support, adhesive layer and stimulation sheet of the directional electrode in Embodiment 1 of this utility model;

[0037] Figure 6 This is a schematic diagram of the snap-fit ​​structure between the bracket and the marking piece after the adhesive layer of the directional electrode is hidden in Embodiment 1 of this utility model;

[0038] Figure 7 This is a schematic diagram illustrating the change process of the X-ray image during the rotation of the stimulation sheet in an electrode marking structure for a directional electrode according to Embodiment 2 of this utility model.

[0039] Figure 8 This is a schematic diagram of an electrode marking structure for a directional electrode in Embodiment 2 of this utility model.

[0040] In the picture:

[0041] 1. Identifier; 2. Identifier part; 21. Identifier hole; 22. Identifier ring; 221. Slot; 23. Identifier block; 3. Locking ring; 4. Bracket; 41. Positioning block; 5. Adhesive layer; 6. Stimulant; 7. Stimulant ring; a. First stimulant; b. Second stimulant; c. Third stimulant. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] This utility model discloses an electrode marking structure for a directional electrode, a directional electrode, and a stimulator.

[0047] Example 1

[0048] Reference Figure 1 and Figure 2 The electrode marking structure for a directional electrode includes a marking sheet 1 and a marking part 2. The marking sheet 1 is disposed on the directional electrode, and the circumferential curvature of the marking sheet 1 is less than 240°; the marking part 2 is disposed on the marking sheet 1 and is used to mark the orientation of the stimulation patch 6 of the directional electrode in the radiographic image.

[0049] Specifically, the marker 1 can be embedded in the outer surface of the directional electrode, or it can be sleeved on the directional electrode by a collar, or it can be fixedly connected to the directional electrode by means of adhesive bonding or other methods. Protrusions or notches can also be provided on the directional electrode to facilitate the positioning and installation of the marker 1.

[0050] The marker 1 is arc-shaped to fit the cylindrical directional electrode. The marker 1 itself can be a regular or irregular shape. The circumferential curvature of the marker 1 is less than 240°, so that the maximum dimension of the marker 1 along the circumference of the directional electrode is less than 2 / 3 of the circumferential dimension of the directional electrode. This ensures that the marker 1 will produce different images in the radiographic image when the directional electrode is rotated to different angles. The marker part 2 can be a slotted structure or other structures. This application does not limit this, as long as it can form different images in the radiographic image.

[0051] In radiographic images, each rotation of the directional electrode produces a different image for marker 1 and marker 2. The images formed by marker 1 and marker 2 uniquely determine the orientation of the directional electrode. Therefore, this electrode marking structure for the directional electrode produces different images for both marker 1 and marker 2 in the radiographic image after the directional electrode is rotated. This ensures that each orientation of the directional electrode corresponds one-to-one with the image formed by marker 1 and marker 2 in the radiographic image, effectively improving the accuracy of the doctor's judgment of the directional electrode's orientation and thus ensuring better treatment results.

[0052] Optionally, the marking part 2 is a marking hole 21 that passes through the marking piece 1, and the marking hole 21 has at least one indicator tip.

[0053] Specifically, the shape of the marking part 2 can be polygonal. This polygon can be a regular polygon, such as a square, rectangle, or regular pentagon, or it can be an irregular polygon. In the radiographic image, when the marking piece 1 rotates with the directional electrode, the marking part 2 can form different shapes, each corresponding to a unique orientation, thereby accurately identifying the orientation of the stimulation piece 6. In this embodiment, the marking hole 21 is a triangular hole to form three indicator tips. The triangle can be an acute triangle, a right triangle, or an obtuse triangle; this invention does not limit the specific angle of the triangle.

[0054] Reference Figure 3 Optionally, an electrode marking structure for a directional electrode includes a marking ring 22. One end of the marking piece 1 extends to be provided with the marking ring 22, which has a slot 221 that engages with the directional electrode.

[0055] Specifically, the marking ring 22 can be sleeved on the outside of the directional electrode. It can be a complete ring or have a notch. A protrusion on the directional electrode can be provided to form an insertion engagement with the slot 221 to position the marking ring 22. Multiple marking rings 22 can be provided at intervals along the extension direction of the marking sheet 1 to improve the connection strength with the directional electrode. The marking sheet 1 and the marking ring 22 can be an integral structure, which can be formed by laser cutting of the developing tube. The marking part 2 on the marking sheet 1 can also be formed by laser cutting.

[0056] During installation, the marking ring 22 of this electrode marking structure for directional electrodes is fitted onto the directional electrode, and both the marking ring 22 and the marking piece 1 are glued and fixed to the directional electrode. This allows both the marking ring 22 and the marking piece 1 to be sufficiently small while ensuring a stable connection with the directional electrode. It also reduces the amount of metal material used in the manufacture of this electrode marking structure for directional electrodes, thereby reducing the amount of metal material implanted in the patient and improving overall safety.

[0057] Optionally, the marking piece 1 has a first end and a second end along the axial direction of the directional electrode, wherein the size of the first end is smaller or larger than the size of the second end.

[0058] Specifically, the directional electrode is cylindrical, and the marker piece 1 is arc-shaped and fitted to the directional electrode. The circumferential curvature of the marker piece 1 along the directional electrode is the width of the marker piece 1. In this embodiment, the first end is the end of the marker piece 1 closest to the marker ring 22, and the circumferential curvature of the first end is smaller than that of the second end, making the marker piece 1 trapezoidal in shape. In other embodiments, the circumferential curvature of the second end of the marker piece 1 may be smaller than that of the first end. The specific shape of the marker piece 1 can be designed according to the actual application scenario, and this utility model does not limit it in this regard. The difference in circumferential curvature can be achieved by increasing or decreasing the circumferential curvature from the first end to the second end, or by a step-like gradual change in circumferential curvature from the first end to the second end, or by other rules.

[0059] By setting different circumferential curvatures at the first and second ends of the marker 1, the marker 1 can be made polygonal, thus forming an indicative image in the radiographic image and improving the accuracy of directional marking. Simultaneously, reducing the size of one side of the marker 1 further reduces the amount of metal material used, thereby lowering the metal content of this type of electrode marking structure used for directional electrodes.

[0060] Optionally, the marking piece 1 has a first end and a second end along the axial direction of the directional electrode, and the circumferential curvature of the marking piece 1 increases or decreases from the first end to the second end.

[0061] Specifically, in this embodiment, the circumferential curvature of the marker piece 1 decreases from the first end to the second end, and the projected shape of the marker piece 1 is trapezoidal in a projection plane parallel to the axis of the directional electrode. In other embodiments, the circumferential curvature of the marker piece 1 may also decrease from the second end to the first end. The specific decrease range can be designed according to the actual application scenario and the required dimensions of the marker part 2, and this utility model does not limit this.

[0062] By setting the circumferential curvature of the marker 1 to decrease or increase, the shape of the marker 1 in the radiographic image can present a corresponding indication effect, thereby improving the accuracy of direction identification.

[0063] Optionally, an electrode marking structure for a direction electrode further includes a locking ring 3. The locking ring 3 is disposed at one end of the marking piece 1 and sleeved with the direction electrode.

[0064] Specifically, the locking ring 3 can be positioned opposite to the marking ring 22, and the locking ring 3 and the marking piece 1 are integrally formed. The locking ring 3 can abut against the locking surface on the direction electrode, thereby locking the entire marking piece 1 onto the direction electrode.

[0065] By setting the locking ring 3, when the electrode marking structure for the directional electrode is installed, the locking ring 3 is also sleeved on the directional electrode, which can limit and fix the electrode marking structure for the directional electrode on the directional electrode, thereby improving the installation stability of the electrode marking structure for the directional electrode.

[0066] Optionally, an electrode marking structure for a directional electrode further includes a filling portion. The filling portion is disposed on the side of the marking ring 22 and the marking piece 1 and is adhesively fixed to the directional electrode.

[0067] Specifically, a filling portion is provided on the side of the marking ring 22 and the marking piece 1 near the direction electrode. The filling portion can be polyurethane or epoxy resin to increase the adhesion strength between the marking ring 22 and the marking piece 1 and the adhesive structure, thereby further improving the connection strength between the electrode marking structure for the direction electrode and the direction electrode.

[0068] Each set of stimulation structures for the directional electrodes described below has three stimulation patches 6. The different images presented by the marker section 2 and the marker patch 1 under different angles are further described in detail.

[0069] Reference Figure 4 The three stimulation patches 6 are designated as first stimulation patch a, second stimulation patch b, and third stimulation patch c. The initial position is set with first stimulation patch a facing the treatment target. At this initial position, the angle of the directional electrode is set to 0°. The image developed by the marker section 2 is a triangle with its apex pointing to the right, with marker patch 1 directly facing the treatment target, and narrower at the top and wider at the bottom. Next, the directional electrode is rotated continuously at 30° intervals, changing the angle of the stimulation patches from 0° to 330°, so that first stimulation patch a, second stimulation patch b, and third stimulation patch c sequentially face the treatment target. The radiographic image formed by the marker section 2 is hereinafter referred to as the aperture image, and the radiographic image formed by marker patch 1 is hereinafter referred to as the background image. The radiographic images of the marker ring 22 and the locking ring 3 are both rectangular. The changes in the radiographic images are as follows:

[0070] At 30°, the image of the hole is a triangle with its tip pointing to the right, and the size of the triangle becomes smaller (compared to 0°), while the bottom image is closer to the left side of the marking ring 22;

[0071] At 60°, the hole image is a triangle with the tip pointing to the right. The size of the triangle is smaller (compared to 30°). Also, because the marking piece 1 is opened from the front to the back, the left side of the bottom image is flush with the left side of the marking ring 22.

[0072] At 90°, the bottom image is a right triangle shape, with the left side of the bottom image flush with the left side of the marking ring 22, and the hole image is a notch on the long right-angled side of the right triangle of the bottom image.

[0073] At 120°, the aperture image is a triangle with its tip pointing to the left. The triangle is relatively small, and the left side of the bottom image is flush with the left side of the marking ring 22. At this time, the second stimulation patch b is directly facing the treatment target.

[0074] At 150°, the hole image is a triangle with its tip pointing to the left. The size of the triangle increases (compared to 120°). The bottom image gradually shifts to the right, and the left side of the bottom image is flush with the left side of the locking ring 3.

[0075] At 180°, the aperture image is a triangle with its tip pointing to the left, and the size of the triangle is further increased (compared to 150°);

[0076] At 210°, the hole image is a triangle with its tip pointing to the left. The size of the triangle is reduced (compared to 180°), and the bottom image is located to the right of the locking ring 3.

[0077] At 240°, the aperture image is a triangle with the tip pointing to the left. The size of the triangle is reduced (compared to 210°), and the right side of the bottom image is flush with the right side of the locking ring 3. At this time, the third stimulation patch c is directly facing the treatment target.

[0078] At 270°, the bottom image is a right triangle, and the right side of the bottom image is flush with the right side of the locking ring 3. The hole is a notch of the long right-angled side of the right triangle.

[0079] At 300°, the hole image is a triangle with the tip pointing to the right, and the right side of the bottom image is flush with the right side of the locking ring 3;

[0080] At 330°, the hole image is a triangle with the tip pointing to the right, and the size of the triangle is increased (compared to 300°), and the right side of part of the bottom image is flush with the right side of the locking ring 3.

[0081] Reference Figure 5 and Figure 6 The directional electrode includes a support 4, an adhesive layer 5, an electrode marking structure for the directional electrode as described in the above embodiment, and at least one set of stimulation structures. The adhesive layer 5 is disposed on the surface of the support 4; the stimulation structures are disposed on the support 4, and each set of stimulation structures includes multiple stimulation patches 6 arranged in a ring with insulating spacers. The stimulation patches 6 are installed on the support 4 and then adhered to the support 4 by the adhesive layer 5; the electrode marking structure for the directional electrode is fixed to the support 4.

[0082] Specifically, multiple sets of stimulation structures can be spaced out on the support 4. In one embodiment, four sets of stimulation structures are provided, each set including four stimulation patches 6, so that the directional electrode forms 12 stimulation contacts in a 3-3-3-3 configuration. In another embodiment, two sets of stimulation structures are provided, and two stimulation rings 7 can also be spaced out on the support 4 as stimulation contacts, forming 8 stimulation contacts in a 1-3-3-1 configuration. The orientation of these stimulation contacts is indicated by different radial patterns formed by the electrode marking structure described above for the directional electrode.

[0083] When in use, this directional electrode can accurately identify the orientation of the stimulation patch 6 through an electrode marking structure, ensuring that the stimulation patch 6 is aligned with the treatment target, thereby improving the therapeutic effect of the directional electrode. Furthermore, the electrode marking structure used in this directional electrode can form a one-to-one corresponding image in the radiographic image for each rotation angle of the directional electrode, ensuring that the doctor can accurately determine the orientation of the directional electrode, which is beneficial for improving the therapeutic effect of the directional electrode.

[0084] Optionally, the bracket 4 has a positioning block 41 that engages with an electrode marking structure for a directional electrode. The positioning block 41 is at least partially engaged in the slot 221 of the marking ring 22, so that the electrode marking structure for a directional electrode is limited and fixed.

[0085] Specifically, the positioning block 41 and the bracket 4 can be an integral structure, extending axially along the bracket 4 to insert into the slot 221. The length of the positioning block 41 can be greater than the length of the slot 221, so that the positioning block 41 can completely pass through the slot 221. Alternatively, the length of the positioning block 41 can be less than or equal to the length of the slot 221, so that the positioning block 41 is only inserted into the slot 221. The side of the positioning block 41 can fit against the side wall of the slot 221, thereby effectively limiting and fixing an electrode marking structure for a directional electrode.

[0086] The stimulation system includes a directional electrode, a stimulator, and an extension wire as described in the above embodiments. One end of the directional electrode is implanted in the patient's brain, and the other end is electrically connected to the stimulator or electrically connected to the stimulator via the extension wire.

[0087] When in use, this stimulation system can accurately identify the direction in which the directional electrode is implanted in the patient's brain, ensuring that the stimulation patch 6 of the directional electrode is oriented towards the treatment target, and ensuring that the output energy is concentrated near the treatment target, thereby effectively improving the treatment effect on the patient and reducing the possibility of adverse reactions.

[0088] Example 2

[0089] Based on Embodiment 1, the difference between this embodiment and Embodiment 1 lies in the different structure of the identification part 2.

[0090] Reference Figure 7 and Figure 8 Optionally, the marking part 2 is a marking block 23. The marking block 23 protrudes from the marking ring 22, and the marking block 23 and the marking piece 1 are distributed at intervals along the circumference of the marking ring 22.

[0091] Specifically, a protruding identification block 23 is provided on the side of the identification ring 22 away from the card slot 221. There may be only one identification block 23 or multiple identification blocks 23 at intervals. The height of the identification block 23 is less than the height of the identification ring 22.

[0092] By protruding the marker block 23 and spacing it from the marker piece 1, the images formed by the marker ring 22, marker block 23, and marker piece 1 differ depending on the orientation of the directional electrode, allowing doctors to accurately determine the orientation of the directional electrode. Specifically, when the marker block 23 is set, the images formed by the marker ring 22, marker block 23, and marker piece 1 in the radiographic image are all different as the directional electrode rotates from 0° to 330°. The principle of image change is the same as in Embodiment 1 and will not be repeated here.

[0093] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electrode marking structure for a directional electrode, characterized in that, include: A marker (1) is disposed on a directional electrode, wherein the circumferential arc of the marker (1) is less than 240°; The marking section (2) is used to mark the orientation of the stimulation pad (6) of the directional electrode.

2. The electrode marking structure for a directional electrode according to claim 1, characterized in that, The marking part (2) is a marking hole (21) that passes through the marking piece (1), and the marking hole (21) has at least one indicator tip.

3. The electrode marking structure for a directional electrode according to claim 2, characterized in that, The marking hole (21) is a triangular hole.

4. The electrode marking structure for a directional electrode according to claim 1, characterized in that, The electrode marking structure for the directional electrode further includes: The marking ring (22) extends from one end of the marking piece (1) and has a slot (221) that engages with the direction electrode.

5. The electrode marking structure for a directional electrode according to claim 4, characterized in that, The marking part (2) is a marking block (23), which protrudes from the marking ring (22). The marking block (23) and the marking piece (1) are distributed at intervals along the circumference of the marking ring (22).

6. The electrode marking structure for a directional electrode according to any one of claims 1 to 5, characterized in that, The electrode marking structure for the directional electrode further includes: A locking ring (3) is disposed at one end of the marking piece (1) and sleeved with the direction electrode.

7. The electrode marking structure for a directional electrode according to any one of claims 1 to 5, characterized in that, The marking piece (1) has a first end and a second end along the axial direction of the directional electrode, and the circumferential arc of the marking piece (1) increases or decreases from the first end to the second end.

8. A directional electrode, characterized in that, include: Support (4); Adhesive layer (5); At least one set of stimulation structures is disposed on the support (4), and each set of stimulation structures includes a plurality of spaced-apart stimulation pieces (6), the stimulation pieces (6) are insulated from each other and the stimulation pieces (6) are adhered to the support (4) by the adhesive layer (5); The electrode marking structure for the directional electrode as described in any one of claims 1 to 7 is snapped onto the bracket (4).

9. The directional electrode according to claim 8, characterized in that, The bracket (4) has a positioning block (41) that engages with the electrode marking structure for the directional electrode. The positioning block (41) is at least partially engaged in the slot (221) of the marking ring (22) so that the electrode marking structure for the directional electrode can be limited and fixed.

10. A stimulation system, characterized in that, include: Stimulator; The directional electrode as described in claim 8 or 9, wherein one end of the directional electrode is implanted in the patient's brain and the other end is electrically connected to the stimulator.

11. The stimulation system according to claim 10, characterized in that, The stimulation system includes: An extension wire is provided, through which the stimulator is electrically connected to the directional electrode.

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