A protective device, auxiliary installation tool and installation method for intracranial implanted electrode

Abstract

The present application relates to a protective device, auxiliary installation tool and installation method for intracranial implanted electrodes, and relates to the technical field of medical devices, including a base, wherein a mounting cavity for mounting electrode components is provided in the base; the base includes at least two curved surfaces, and the curved surfaces are used to be mounted on the skull, wherein the curvature of at least two curved surfaces is different. The base is placed on the skull, and the curved surfaces are fitted with the surface of the skull, and the skull pins fixed on the skull are connected and fixed with the mounting plate by a fixing agent such as dental cement, and the mounting plate and the skull surface are bonded together by dental cement. The curved surface greatly increases the degree of fit with the skull and increases stability; and curved surfaces with different curvatures can adapt to different skulls and / or different positions of the skull. The base can be stably fixed on the skull surface, preventing the base from falling off due to the animal's own movement and / or external force impact, and improving the protective effect on the electrode.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a protective device, an auxiliary installation tool and an installation method for an intracranial implanted electrode. Background Art

[0002] Brain-computer interface refers to the direct connection between the human or animal brain and external devices, in which the high-throughput electrodes implanted in the skull are the outposts for external hardware to receive neural electrical signals. The skull will store electrode components such as electrode interfaces and signal amplifiers that come with high-throughput implanted electrodes.

[0003] Due to the difficulty in fixing electrodes caused by the curved surface structure of animal skulls, as well as the external force impact caused by frequent biological movements, such high-throughput electrodes are easily affected by external factors and lose their effectiveness. Therefore, how to fix high-throughput implanted electrodes on the surface of skulls has become a major problem in this field. Summary of the invention

[0004] In order to improve the protective effect of electrodes, the present application provides a protective device, an auxiliary installation tool and an installation method for intracranial implanted electrodes.

[0005] On the one hand, the present application provides a protective device for intracranial implant electrodes, which adopts the following technical solution:

[0006] A protective device for an intracranial implant electrode, comprising:

[0007] A base, wherein a mounting cavity for mounting electrode components is provided in the base;

[0008] The base includes at least two curved surfaces, and the curved surfaces are used to be installed on the skull, wherein the curvatures of at least the two curved surfaces are different.

[0009] By adopting the above technical solution, when in use, the base is placed on the skull, and the curved surface is fitted with the skull surface, and the skull pins fixed on the skull are connected and fixed to the mounting plate by a fixing agent such as dental cement, and the mounting plate and the skull surface are bonded together by dental cement. First, the curved surface greatly increases the degree of fit with the skull and increases stability; and curved surfaces with different curvatures can adapt to different skulls and / or different positions of the skull. The base can be stably fixed on the skull surface, preventing the base from falling off due to the animal's own movement and / or external force impact, and improving the protective effect of the electrode.

[0010] Optionally, at least two mounting plates are arranged on the base, and the arc-shaped surface is arranged on the side wall of the mounting plate away from the base.

[0011] By adopting the above technical solution, during installation, the curved surface of the mounting plate is fitted with the surface of the skull, and the skull pins fixed on the skull are connected and fixed to the mounting plate by a fixing agent such as dental cement, and the mounting plate and the skull surface are bonded together by dental cement. Multiple skull pins can be arranged side by side on one side of the mounting plate, and the supporting force points of the base on the skull surface are increased by setting multiple mounting plates, and the base can be fully contacted and chelated with a fixing agent such as dental cement, so that the base is completely and stably fixed on the skull surface, preventing the base from falling off due to the animal's own movement or external force impact, and improving the protection effect of the electrode.

[0012] Optionally, four mounting plates are provided, and the four mounting plates form a rectangular structure.

[0013] By adopting the above technical solution, the cranial window is generally a circular hole, and a rectangular structure is set at the bottom of the base, which is conducive to increasing the contact space between the dental cement and the skull. Because the bottom of the base needs to be completely sealed with the skull, and the diameter of the cranial window hole is smaller than the side of the rectangular structure; more dental cement can be applied to the four corners of the rectangular mounting plate for reinforcement, which can effectively improve the stability of the base compared to the circular base structure.

[0014] Optionally, a side wall of the mounting plate is provided with a tooth groove, the tooth groove is communicated with the mounting cavity, and a plurality of the tooth grooves are arranged at intervals along the length direction of the mounting plate.

[0015] By adopting the above technical solution, in the process of installing and fixing the base, the base needs to be bonded to the skull through a fixing agent such as dental cement. In the process of applying dental cement, the tooth groove is connected with the mounting cavity, so that the dental cement can enter the inner side of the mounting plate from the outer side of the mounting plate through the tooth groove, that is, the mounting plate is located on the side inside the base, or enter the outer side from the inner side of the mounting plate; dental cement is distributed between the inner and outer sides of the mounting plate and the skull, so that the dental cement is distributed more evenly and the bonding effect is improved; and the dental cement fills the tooth groove, increases the contact area between the mounting plate and the dental cement, further improves the bonding effect, and improves the stability of the base.

[0016] Optionally, a positioning ring is provided on the base, and at least two positioning rings are provided, with a gap being provided between two adjacent positioning rings.

[0017] By adopting the above technical solution, after the dental cement is applied, the dental cement covers the positioning rings and enters the gaps between the positioning rings. After the dental cement solidifies, the dental cement in the gaps forms a supporting structure, so that the mounting plate, the skull pin and the mounting ring form a whole, thereby improving the fixing effect.

[0018] Optionally, a positioning platform is provided on the side wall of the base, and a plurality of positioning holes are formed on the positioning platform.

[0019] By adopting the above technical solution, the dental cement enters the positioning hole, and after the dental cement solidifies, a dental cement column is formed in the positioning hole to constitute an anchoring structure, thereby effectively increasing the stability of the base.

[0020] Optionally, the base includes a first base body and a second base body.

[0021] By adopting the above technical solution and dividing the base into two halves, doctors can flexibly arrange high-throughput electrodes near the cranial window without worrying about the size limitation of the opening of the base, thus avoiding the increased difficulty of operation caused by the base occupying the wound space.

[0022] Optionally, the base includes a mounting ring, a protective cover is sleeved on the mounting ring, and the protective cover is fixedly connected to the mounting ring via a fixing member.

[0023] By adopting the above technical solution, after the base is stably installed on the skull, the protective cover is buckled onto the mounting ring, and then the protective cover and the mounting ring are connected and fixed by a fixing piece, so that the base and the protective cover form a closed space, thereby protecting the motor components in the base.

[0024] In a second aspect, the present application provides an auxiliary installation tool for intracranial implant electrodes, which adopts the following technical solution:

[0025] An auxiliary installation tool for intracranial implant electrodes comprises a fixing ring and a driving handle, wherein the driving handle is fixedly arranged on the fixing ring, the fixing ring is used to be sleeved on the mounting ring, the fixing ring is adapted to the mounting ring, and a positioning piece for fixing the position of the mounting ring is arranged on the fixing ring.

[0026] By adopting the above technical solution, when in use, the two halves of the base are roughly placed above the cranial window, the fixing ring is sleeved on the mounting ring of the combined base, and the fixing ring is connected and fixed to the mounting ring through the positioning piece, so that the first base body and the second base body are completely combined into a complete base, and then the position of the entire base is fixed by fixing the position of the driving handle; during the process of coating dental cement, the base is kept as a combined whole and the position is kept stable, thereby improving the coating quality of the dental cement and ensuring the stability of the base bonding.

[0027] In a third aspect, the present application provides a method for installing a protective device for an intracranial implant electrode, which adopts the following technical solution:

[0028] A method for installing a protective device for an intracranial implant electrode, using an auxiliary installation tool to install the protective device, comprising the following steps:

[0029] S1. Install the base at the cranial window of the skull so that the electrode components are located in the installation cavity of the base;

[0030] S2, moving the first base body and the second base body to merge the first base body and the second base body, and sleeve the fixing ring on the mounting ring;

[0031] S3, installing skull pins around the base, and setting multiple skull pins near each mounting plate;

[0032] S4. Seal the mounting plate from the inside to the outside of the base with a fixative, and connect the skull pin to the mounting plate. The fixative should penetrate into the gap between the positioning rings.

[0033] S5. After the fixative solidifies, remove the fixing ring and finally install the protective cover on the mounting ring.

[0034] By adopting the above technical solution, the fixative connects and fixes the skull pins fixed on the skull to the mounting plate, and the mounting plate and the skull surface are bonded together by dental cement. The curved surface greatly increases the degree of fit with the skull and increases stability; multiple skull pins can be arranged side by side on one side of the mounting plate, and the support points of the base on the skull surface are increased by setting multiple mounting plates, and the base can be fully contacted and chelated with the fixative such as dental cement, so that the base is completely and stably fixed on the skull surface, preventing the base from falling off due to the animal's own movement or external force impact, and improving the protection effect of the electrode.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. When in use, place the base on the skull and fit the curved surface with the skull surface. The curved surface greatly increases the fit with the skull and increases stability. Moreover, curved surfaces with different curvatures can adapt to different skulls and / or different positions of the skull, so that the base can be stably fixed on the skull surface, preventing the base from falling off due to the animal's own movement and / or external force impact, and improving the protection effect of the electrode;

[0037] 2. Because the bottom of the base needs to be completely sealed with the skull, and the diameter of the cranial window hole is smaller than the side of the rectangular structure; more dental cement can be applied to the four corners of the rectangular mounting plate for reinforcement, which can effectively improve the stability of the base compared to the circular base structure;

[0038] 3. During the installation of the fixed base, the base needs to be bonded to the skull with a fixing agent such as dental cement. During the application of dental cement, the tooth socket is connected to the mounting cavity, so that dental cement is distributed between the inner and outer sides of the mounting plate and the skull, so that the dental cement is distributed more evenly and the bonding effect is improved; and the dental cement fills the tooth socket, increasing the contact area between the mounting plate and the dental cement, further improving the bonding effect and the stability of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0040] Figure 2 This is a schematic diagram of the structure of the base and the mounting plate mainly embodied in Example 1 of the present application;

[0041] Figure 3 is a schematic diagram of the structure of Example 2 of the present application;

[0042] Figure 4 is a schematic diagram of the structure of Example 3 of the present application;

[0043] Figure 5 is a schematic diagram of the structure of Example 4 of the present application;

[0044] Figure 6 It is a structural schematic diagram of the auxiliary installation tool of the present application.

[0045] Explanation of the accompanying drawings: 1. base; 11. first seat body; 12. second seat body; 13. mounting ring; 131. mounting hole; 132. limiting platform; 101. mounting cavity; 102. arc surface; 2. protective cover; 21. cover body; 211. connecting hole; 22. dome; 23. screw; 3. mounting plate; 31. panel; 32. back plate; 33. side plate; 34. tooth groove; 4. positioning ring; 41. gap; 5. positioning platform; 51. positioning hole; 6. cylinder; 71. fixing ring; 711. fixing hole; 7111. fixing bolt; 72. driving handle; 721. driving hole; 722. threaded hole; 7221. limiting bolt. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-6 This application is described in further detail.

[0047] The protective device of the present application is mainly used in non-human primate experiments. During the operation, the surgeon removes the animal's hair, disinfects the scalp, removes the scalp above the brain area, uses a skull drill to drill a round or square cranial window on the skull, implants a high-throughput electrode in the brain tissue under the cranial window, and seals the cranial window with dental cement (or not), leaving only the connecting wires, electrode interfaces, amplifiers and other electrode components outside the skull. The protective device of the present application will accommodate the electrode components and fix them to the outside of the skull to protect the electrode components.

[0048] Example 1

[0049] The embodiment of the present application discloses a protective device for intracranial implanted electrodes.

[0050] Reference Figure 1A protective device for intracranial implanted electrodes comprises a base 1 and a protective cover 2. The base 1 is provided with an installation cavity 101, and the electrode components are installed in the installation cavity 101; the protective cover 2 and the base 1 constitute a main body of the protective device for installing intracranial high-flux implanted electrodes.

[0051] Reference Figure 1 The base 1 includes a mounting ring 13, which is provided with mounting holes 131. At least two mounting holes 131 are arranged along the circumference of the mounting ring 13. In the present embodiment, 8 mounting holes 131 are arranged, and the mounting holes 131 are evenly spaced along the circumference of the mounting ring 13.

[0052] Among them, refer to Figure 1 The protective cover 2 includes an integrally formed cover body 21 and a dome 22. The cover body 21 is a cylindrical structure, and a chamfer is provided at the connection between the dome 22 and the cover body 21. The inner diameter of the cover body 21 is equal to the outer diameter of the mounting ring 13, so that the cover body 21 can be tightly buckled with the mounting ring 13. The cover body 21 is provided with connecting holes 211, and the number of the connecting holes 211 is equal to the number of the mounting holes 131. The protective cover 2 is fixedly connected to the mounting ring 13 through a fixing member, and the fixing member is set as a screw 23, and the screw 23 is penetrated into the connecting hole 211 and is threadedly connected to the mounting hole 131.

[0053] Reference Figure 1 The mounting ring 13 is fixedly provided with a stopper 132 for contacting with the protective cover 2, and the distance between the stopper 132 and the mounting hole 131 is equal to the distance between the end surface of the cover body 21 and the connecting hole 211. When the mounting cover contacts the stopper 132, the mounting hole 131 and the connecting hole 211 are in the same plane, which facilitates the insertion of the screw 23.

[0054] Among them, refer to Figure 2 The base 1 includes a first base body 11 and a second base body 12, and the first base body 11 and the second base body 12 are equal in shape and size. The base 1 is divided into two halves. If the volume of the high-flux electrode used is large, the doctor can flexibly arrange the high-flux electrode near the cranial window without worrying about the size limit of the opening of the base 1, effectively avoiding the increase in operation difficulty caused by the base 1 occupying the wound space.

[0055] Reference Figure 2 At least two mounting plates 3 are arranged on the base 1, and the base 1 includes at least two arcuate surfaces 102, which are arranged on the side wall of the mounting plate 3 away from the base 1, and the arcuate surfaces 102 are adapted to the skull. In this embodiment, four mounting plates 3 are arranged, and in other embodiments, other numbers of mounting plates 3 may be arranged. The four mounting plates 3 are connected end to end to form a rectangular structure, and more specifically, the four mounting plates 3 form a square structure.

[0056] Specifically, refer to Figure 2The four mounting plates 3 are respectively a panel 31, a back plate 32 and two side plates 33, and the two ends of the two side plates 33 are connected to the panel 31 and the back plate 32 respectively. The panel 31, the back plate 32 and the side plates 33 are provided with arc surfaces 102 of different curvatures to fit the skull curved surfaces in different areas to the greatest extent. The width of the panel 31 is greater than the width of the back plate 32, and the distance between the arc surfaces 102 of the two side plates 33 and the base 1 gradually decreases from the end close to the panel 31 to the end away from the panel 31.

[0057] The cranial window is generally a circular hole, and a rectangular structure is provided at the bottom of the base 1, which is conducive to increasing the contact space between the dental cement and the skull. Because the bottom of the base 1 needs to be completely sealed with the skull, and the diameter of the cranial window hole is smaller than the side of the rectangular structure; more dental cement can be applied to the four corners of the rectangular mounting plate 3 for reinforcement, which can effectively improve the stability of the base 1 compared to the circular base 1 structure.

[0058] Among them, refer to Figure 2 The side wall of the mounting plate 3 is provided with a tooth groove 34, the tooth groove 34 is connected to the mounting cavity 101, and the tooth groove 34 penetrates to the side wall of the mounting plate 3 away from the base 1, and a plurality of tooth grooves 34 are arranged at intervals along the length direction of the mounting plate 3. In this embodiment, the tooth groove 34 is a square groove, that is, the spacing between the two side walls of the tooth groove 34 is equal.

[0059] In the process of installing and fixing the base 1, the base 1 needs to be bonded to the skull with a fixing agent such as dental cement. In the process of applying the dental cement, the tooth groove 34 is connected with the mounting cavity 101, so that the dental cement can enter the inner side of the mounting plate 3 from the outer side of the mounting plate 3 through the tooth groove 34, that is, the mounting plate 3 is located on the side inside the base 1, or enter the outer side from the inner side of the mounting plate 3. Dental cement is distributed between the inner and outer sides of the mounting plate 3 and the skull, so that the dental cement is distributed more evenly and the bonding effect is improved; and the dental cement fills the tooth groove 34, increases the contact area between the mounting plate 3 and the dental cement, further improves the bonding effect, and improves the stability of the base 1.

[0060] Among them, refer to Figure 2 , a positioning ring 4 is provided on the base 1, and the positioning ring 4 is set to a rectangular structure. At least two positioning rings 4 are provided, and a gap 41 is provided between two adjacent positioning rings 4. In this embodiment, two positioning rings 4 are provided; in other embodiments, the number of positioning rings 4 can be set to three or more. After the dental cement is applied, the dental cement covers the positioning rings 4 and enters the gap 41 between the positioning rings 4. After the dental cement solidifies, the dental cement in the gap 41 forms a supporting structure, so that the mounting plate 3, the skull nail and the mounting ring 13 form a whole, thereby improving the fixing effect.

[0061] The implementation principle of the embodiment of the present application is as follows: when in use, the base 1 is placed on the skull, and the curved surface 102 is fitted with the skull surface, the two halves of the base 1 are synthesized into a complete one, and it is positioned on the skull, that is, around the position of the cranial window. The skull pins fixed on the skull are connected and fixed to the mounting plate 3 by a fixing agent such as dental cement, and the mounting plate 3 and the skull surface are bonded together by dental cement. Afterwards, 7 to 8 screw holes are drilled in each face direction of the skull near the sides of the four mounting plates 3, and the skull pins are screwed in. Afterwards, the column mounting plate 3 is sealed from the inside to the outside with dental cement, and the cap of the skull pin is connected to the mounting plate 3, the curved surface 102 and the skull, and the height of the dental cement should penetrate into the gap 41 between the positioning rings 4, and finally the protective cover 2 is covered. When recording the signal, just remove the protective cover 2, connect the interface of the external device and the electrode, disconnect after recording, and cover the protective cover 2.

[0062] In the present application, firstly, the arc surface 102 greatly increases the degree of fit with the skull and increases stability; secondly, the arc surface 102 of different curvatures can adapt to different skulls and / or different positions of the skull. In addition, multiple skull pins can be arranged side by side on one side of the mounting plate 3. By setting multiple mounting plates 3, the support force points of the base 1 on the skull surface are increased, and the base 1 can be fully contacted and chelated with the fixing agent such as dental cement, so that the base 1 is completely and stably fixed on the skull surface, preventing the base 1 from falling off due to the animal's own movement and / or external force impact, and improving the protection effect of the electrode.

[0063] Example 2

[0064] Reference Figure 3 The difference between this embodiment and the embodiment 1 is that: the side wall of the base 1 is provided with a positioning platform 5, the positioning platform 5 is a rectangular structure, a plurality of positioning holes 51 are opened on the positioning platform 5, and the side walls around the positioning platform 5 are all provided with positioning holes 51. Dental cement enters into the positioning hole 51, and after the dental cement solidifies, a dental cement column is formed in the positioning hole 51, forming an anchoring structure, which effectively increases the stability of the base 1.

[0065] Example 3

[0066] Reference Figure 4 The difference between this embodiment and embodiment 1 is that a cylinder 6 is provided at the bottom of the base 1, and an arc surface 102 is provided on the side wall of the cylinder 6 away from the base 1, and four arc surfaces 102 are provided, and the curvatures of the arc surfaces 102 are different.

[0067] Example 4

[0068] The difference between this embodiment and the first embodiment is that the tooth grooves 34 are different.

[0069] Reference Figure 5In this embodiment, the tooth groove 34 is configured as a dovetail groove. In other embodiments, the tooth groove 34 can be configured as a T-shaped groove or a groove of other shapes. After the dental cement solidifies, the dental cement fills the tooth groove 34, increasing the contact area between the mounting plate 3 and the dental cement. In addition, the dovetail-shaped dental cement structure can further improve the bonding effect and the stability of the base 1.

[0070] The embodiment of the present application also discloses an auxiliary installation tool for intracranial implant electrodes.

[0071] Reference Figure 6 , an auxiliary installation tool for intracranial implant electrodes, comprising a fixing ring 71 and a driving handle 72, wherein the driving handle 72 is fixedly arranged on the fixing ring 71, and the fixing ring 71 is used to be sleeved on the mounting ring 13, and the fixing ring 71 is adapted to the mounting ring 13. A fixing hole 711 is provided on the fixing ring 71, and a positioning member for fixing the position of the mounting ring 13 is provided on the fixing ring 71, and the positioning member is a fixing bolt 7111, and the fixing bolt 7111 is penetrated in the fixing hole 711 and is threadedly connected with the mounting hole 131 of the mounting ring 13. A driving hole 721 penetrating the driving handle 72 is provided in the driving handle 72, and a threaded hole 722 penetrating to the driving hole 721 is provided on the side wall of the driving handle 72, and the threaded hole 722 is threadedly connected with a limiting bolt 7221.

[0072] When in use, the two halves of the base 1 are roughly placed above the cranial window, and the fixing ring 71 is sleeved on the mounting ring 13 of the combined base 1, and the fixing ring 71 is connected and fixed to the mounting ring 13 through the positioning piece, so that the first base body 11 and the second base body 12 are completely combined into a complete base 1. Then, the position of the entire base 1 is fixed by fixing the position of the driving handle 72; during the process of applying dental cement, the base 1 is kept as a combined whole and the position is kept stable, so as to improve the coating quality of the dental cement and ensure the stability of the bonding of the base 1.

[0073] In the process of sleeve-fitting the fixing ring 71 on the mounting ring 13, the driving handle 72 can be taken by hand to achieve the purpose of moving the fixing ring 71. In addition, the driving ring can also be moved by mechanical equipment, which includes at least one driving rod (not shown in the figure), which is vertically inserted into the driving hole 721, and the limiting bolt 7221 is tightened, and then the driving rod is moved by the mechanical equipment to achieve the purpose of moving the fixing ring 71.

[0074] The embodiment of the present application also discloses a method for installing a protective device for an intracranial implanted electrode.

[0075] A method for installing a protective device for an intracranial implant electrode, using an auxiliary installation tool to install the protective device, comprising the following steps:

[0076] S1. Install the base 1 at the cranial window of the skull so that the electrode components are located in the installation cavity 101 of the base 1.

[0077] S2, moving the first base body 11 and the second base body 12 to merge the first base body 11 and the second base body 12, and sleeve the fixing ring 71 on the mounting ring 13.

[0078] S3. Install skull pins around the base 1 , and set a plurality of skull pins near each mounting plate 3 .

[0079] S4. Use a fixing agent to seal the mounting plate 3 from the inside to the outside of the base 1, and connect the skull pin to the mounting plate 3. The fixing agent should penetrate into the gap 41 between the positioning rings 4.

[0080] S5 , after the fixing agent solidifies, remove the fixing ring 71 , and finally install the protection cover 2 on the installation ring 13 .

[0081] In step S4, a fixative is first applied from the inner edge of the base 1 to the edge of the mounting plate 3, and the fixative is dental cement, and the fixative is infiltrated into the outside of the base 1 through the tooth groove 34. After the fixative solidifies, the fixative is applied from the outside of the base 1 to connect the nail cap of the skull nail with the side wall of the mounting plate 3, and the fixative covers the gap 41 between the positioning rings 4. Applying the fixative from the inside of the base 1 to the outside facilitates controlling the amount of the fixative in the base 1, preventing the fixative from adhering to the motor components in the base 1, and facilitating controlling the coating quality.

[0082] The fixative connects and fixes the skull pins fixed on the skull with the mounting plate 3, and the mounting plate 3 and the skull surface are bonded together by dental cement. The arc surface 102 greatly increases the degree of fit with the skull and increases stability; multiple skull pins can be arranged side by side on one side of the mounting plate 3, and the support force points of the base 1 on the skull surface are increased by setting multiple mounting plates 3, and can fully contact and chelate with the fixative such as dental cement, so that the base 1 is completely and stably fixed on the skull surface, preventing the base 1 from falling off due to the animal's own movement or external force impact, and improving the protection effect of the electrode.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A protective device for intracranial implant electrodes, characterized in that: include: A base (1), wherein a mounting cavity (101) for mounting electrode components is provided in the base (1); The base (1) is provided with four mounting plates (3), and the four mounting plates (3) form a rectangular structure; each mounting plate (3) is provided with an arc surface (102) on the side wall away from the base (1), the arc surface (102) is adapted to the shape of the skull surface, and the arc surface (102) is used to be mounted on the skull, wherein the curvature of each arc surface (102) is different; when in use, the base (1) is placed on the skull, and the arc surface (102) is made to fit the skull surface, and the skull pin fixed on the skull is connected and fixed to the mounting plate (3) by a fixing agent, and the mounting plate (3) and the skull surface are bonded together by dental cement.

2. A protective device for intracranial implant electrodes according to claim 1, characterized in that: A tooth groove (34) is provided on the side wall of at least one of the mounting plates (3), the tooth groove (34) being in communication with the mounting cavity (101), and a plurality of the tooth grooves (34) are arranged at intervals along the length direction of the mounting plate (3).

3. A protective device for intracranial implant electrodes according to claim 2, characterized in that: A positioning ring (4) is provided on the base (1), at least two positioning rings (4) are provided, and a gap (41) is provided between two adjacent positioning rings (4).

4. A protective device for intracranial implant electrodes according to claim 3, characterized in that: A positioning platform (5) is provided on the side wall of the base (1), and a plurality of positioning holes (51) are provided on the positioning platform (5).

5. A protective device for intracranial implant electrodes according to any one of claims 1 to 4, characterized in that: The base (1) comprises a first base body (11) and a second base body (12).

6. A protective device for intracranial implant electrodes according to claim 5, characterized in that: The base (1) comprises a mounting ring (13), a protective cover (2) is sleeved on the mounting ring (13), and the protective cover (2) is fixedly connected to the mounting ring (13) via a fixing member.

7. An auxiliary installation tool for intracranial implant electrodes, characterized in that: A protective device for installing an intracranial implant electrode as claimed in claim 6, comprising a fixing ring (71) and a driving handle (72), wherein the driving handle (72) is fixedly arranged on the fixing ring (71); The fixing ring (71) is used to be sleeved on the mounting ring (13) of the protective device as claimed in claim 6, the fixing ring (71) is adapted to the mounting ring (13), and a positioning piece for fixing the position of the mounting ring (13) is provided on the fixing ring (71).

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