Brain-computer device of minimally invasive indwelling carbon fiber microelectrode

Abstract

The invention discloses a brain-computer device of a minimally invasive indwelling carbon fiber microelectrode. The brain-computer device comprises an indwelling brain-computer interface and a brain-computer control module, the indwelling brain-computer interface comprises a minimally invasive implantation module and an implantation nerve assembly; the minimally invasive implantation module comprises a fixing base and a puncture fixing needle, the fixing base is used for being fixed to a living body to form a puncture base, and the puncture fixing needle penetrates through the puncture base and then is implanted into the living body to form a nerve implantation channel; the nerve implanting assembly comprises a plurality of carbon fiber microelectrodes arranged in an array and a main board base, the brain inner ends of the carbon fiber microelectrodes penetrate through the nerve implanting channel and then are directionally implanted into the target brain region, and the in-vitro ends of the carbon fiber microelectrodes are electrically connected with the main board base; the mainboard bottom plate is fixedly mounted on the fixed base; the brain-computer control module comprises a brain-computer main board, main board pins of the brain-computer main board are matched with main board sockets of a main board base in an inserted mode to achieve neural signal transmission, and operation convenience and economic practicability are improved through split type structure arrangement.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a brain-computer interface device with a minimally invasive indwelling carbon fiber microelectrode. Background Art

[0002] Brain-computer devices can be divided into two types: non-implantable and implantable, according to the way they collect brain signals. The input signal of non-implantable brain-computer devices is the scalp electrical signal (EEG) formed by macroscopic electrical activity through the scalp. EEG is used to control external devices. The advantages are that no surgery is required, no trauma is caused, and experiments are easy. The disadvantages are that they are easily interfered with by the external electromagnetic environment, the signal is unstable, the temporal and spatial resolution is not high, and there are large individual differences. In view of the defects of non-implantable brain-computer devices, brain-computer devices that contain implantable neural signal detectors are currently widely used in the medical field. The implantable brain-computer device is implanted into the patient's body to achieve treatment of the affected area and the collection of relevant signals of the affected area.

[0003] However, currently used implantable brain-computer interfaces (BCIs) are all installed in a biocompatible housing, either in whole or in separate parts, and then implanted into the skull. This requires opening the entire skull before implantation, which has the following drawbacks:

[0004] Defect 1: Since the shell of the brain-computer device needs to be implanted in the skull, the shell will cause significant damage to the implantation area.

[0005] Defect 2: During implantation, the entire skull must be removed, which often requires a professional brain specialist to complete, is expensive, and has a high risk of infection.

[0006] Defect three: If a function of the implanted brain-computer interface device is damaged, even if the battery needs to be replaced, a complete craniotomy must be performed again, greatly increasing the risk to the patient.

[0007] Defect 4: Currently used implantable brain-computer interfaces contain high-heat generating components such as batteries and wireless chips, which also pose the risk of damaging brain tissue. Summary of the Invention

[0008] The purpose of the present invention is to address the shortcomings of the existing technology and provide a minimally invasive indwelling carbon fiber microelectrode brain-computer device. This minimally invasive indwelling carbon fiber microelectrode brain-computer device separates the implanted electrodes from the part of the brain-computer motherboard that requires signal transmission, uses the electrodes in the body as permanent implantation points, and separates the brain-computer signal interface from the brain-computer motherboard. Updating or repairing the brain-computer motherboard does not require another surgery. Instead, it only requires removing the brain-computer motherboard and replacing it with a new one. This greatly improves convenience and the economical applicability of upgrades.

[0009] The purpose of the present invention is to adopt the following scheme to achieve:

[0010] A minimally invasive indwelling carbon fiber microelectrode brain-computer device, comprising an indwelling brain-computer interface and a brain-computer control module; the indwelling brain-computer interface comprises a minimally invasive implant module and an implanted neural component;

[0011] The minimally invasive implant module includes a fixed base and a puncture fixing needle. The fixed base is used to be fixed on a biological body to form a puncture base. The puncture fixing needle passes through the puncture base and is implanted into the biological body to form a neural implant channel. The implantable neural component includes a plurality of carbon fiber microelectrodes arranged in an array and a main board base. The intracerebral end of the carbon fiber microelectrode passes through the neural implant channel and is then directionally implanted into the target brain area. The extracerebral end of the carbon fiber microelectrode is electrically connected to the main board base. The main board base is fixedly mounted on the fixed base.

[0012] The brain-computer control module includes a brain-computer mainboard, the lower end of the brain-computer mainboard is provided with a mainboard pin, the upper end of the mainboard base is provided with a mainboard socket, and the mainboard pin and the mainboard socket are plugged together to realize neural signal transmission.

[0013] Preferably: the outer side of the carbon fiber microelectrode is sequentially provided with a signal coating and an outer insulating layer, the length of the signal coating and the outer insulating layer is greater than the length of the puncture fixation needle, one end of the signal coating is crystallized with a welding gold point, the mainboard base is provided with an electrode welding hole corresponding to each carbon fiber microelectrode, the welding gold point is welded to the electrode welding hole to form an electrical connection, and the electrode welding hole is electrically connected to the mainboard socket in a one-to-one correspondence.

[0014] Preferably, the puncture and fixation needle is an inner and outer double-tube structure, comprising an outer needle tube and an inner needle tube, wherein the outer needle tube is sleeved on the outer side of the inner needle tube.

[0015] Preferably: one end of the inner needle tube is a bionic mandibular puncture head, the bionic mandibular puncture head includes an external thread, one end of the outer needle tube is provided with an internal thread, and when the outer needle tube is sleeved on the outside of the inner needle tube, the internal thread of the outer needle tube is used to be threadedly connected with the external thread at the end of the inner needle tube.

[0016] Preferably: the bionic mandibular puncture head further includes an expansion convex point, the expansion convex point is located at the end of the inner needle tube, the external thread is a multi-section structure with a slot, and the expansion convex point is arranged opposite the slot; the interior of the outer needle tube is provided with a plurality of inner convex points arranged at intervals, and the exterior of the outer needle tube is provided with fastening convex points corresponding to the inner convex points.

[0017] Preferably: the other end of the inner needle tube is provided with an inner needle tube slot and an outer sealing slot is provided on the outside, and an outer sealing rubber ring is embedded in the outer sealing slot; the other end of the outer needle tube is provided with a limiting clamping ring and an inner sealing slot is provided on the inner side of the limiting clamping ring, and an inner sealing rubber ring is embedded in the inner sealing slot, and the middle of the outer limiting clamping ring is the outer needle tube slot; the inner needle tube slot and the outer needle tube slot are used to connect with the puncture pusher.

[0018] Preferably: a puncture needle fixing seat for guiding and limiting the puncture fixing needle is provided on the fixing base, and at least two fixing plate mounting holes are provided in the circumference of the fixing base. The fixing bolts pass through the fixing plate mounting holes and are connected to the organism to lock the fixing base on the organism.

[0019] Preferably: the fixed base is provided with a motherboard base slot for placing the motherboard base, and the motherboard base is provided with a glue injection hole, and glue is injected into the neural implant channel through the glue injection hole to complete the glue filling assembly of the indwelling brain-computer interface.

[0020] Preferably: the brain-computer motherboard is provided with a power module, a signal processing module, a Bluetooth transmission module, a signal coil, a wireless charging coil, a protection module and a protective shell, and the power module, signal processing module, Bluetooth transmission module, signal coil, wireless charging coil and protection module are located in the protective shell.

[0021] Preferably, the wireless charging coil is arranged on the outside of the brain-computer motherboard, and the signal coil is located in the middle of the brain-computer motherboard.

[0022] Preferably, a mainboard mounting ear is provided on the outer side of the brain-computer mainboard, a brain-computer board mounting hole is provided on the outer side of the fixed base, and the mainboard mounting ear and the brain-computer board mounting hole are arranged opposite to each other and are connected by fastening bolts.

[0023] The beneficial effects of the present invention are as follows:

[0024] The brain-computer interface device disclosed in this application can separate the implanted carbon fiber microelectrodes from the portion of the brain-computer mainboard that requires signal transmission. The carbon fiber microelectrodes in the body serve as permanent implant sites (much like a pre-implanted indwelling needle), separating the signal interface of the brain-computer interface device from the mainboard. Upgrading or repairing the mainboard eliminates the need for further surgery; simply remove the mainboard and replace it with a new one.

[0025] 2. When implanting carbon fiber microelectrodes for nerve signal transmission and action, only minimally invasive surgery is required. There is no need to disassemble the skull. By fastening with glue, screws, or claws, the surgery can be completed quickly (from the original craniotomy to minimally invasive surgery), greatly reducing the user's economic costs, completing the surgery faster, reducing the risk of infection, and improving safety.

[0026] 3. The puncture fixation needle adopts an inner and outer double-tube structure. One end of the inner needle tube is a bionic mandibular puncture head, which imitates the design of mosquito mouthparts to reduce the pain during puncture. The outer needle tube is riveted by the inner rotating tube so that the outer needle tube is fastened to the organism to form a nerve implantation channel.

[0027] 4. The brain-computer motherboard of the brain-computer control module is a micro-integrated circuit board, consisting of a signal processing module, a Bluetooth transmission module, a signal coil, a power module, a wireless charging coil, and a protection module. The wireless charging coil is located in the outer ring, while the functional modules are distributed in the inner ring. The signal coil is located in the center. The brain-computer motherboard is protected by a hemispherical casing. The functional modules of the brain-computer motherboard are rationally arranged. The wireless charging coil is located in the outer ring to reduce the number of coil turns and significantly reduce the overall volume. The signal coil is placed in the center, and can be made into a tapered winding to further reduce the volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the brain-computer interface device with minimally invasive indwelling carbon fiber microelectrodes disclosed in the present invention.

[0029] Figure 2 Schematic diagram of the minimally invasive implant module.

[0030] Figure 3 Schematic diagram of the implanted neural component.

[0031] Figure 4 Schematic diagram of carbon fiber microelectrode.

[0032] Figure 5 for Figure 4 Enlarged cross-sectional view at point H in the middle.

[0033] Figure 6 Schematic diagram of the puncture fixation needle.

[0034] Figure 7 Schematic diagram of the fixed base.

[0035] Figure 8 A schematic diagram of the motherboard base.

[0036] Figure 9 A schematic diagram of the brain-computer motherboard.

[0037] Among them, 1. Carbon fiber microelectrode; 11. Carbon fiber microelectrode wire; 12. Signal coating; 13. Outer insulation layer; 14. Welding gold point; 2. Puncture fixing needle; 20. Inner needle tube; 200. External thread; 201. Expansion bump; 203. External sealing rubber ring; 204. Inner needle tube slot; 21. Outer needle tube; 210. Internal thread; 211. Fastening bump; 212. Internal bump; 213. Inner sealing rubber ring; 214. Limiting clamp; 215. Outer needle tube slot; 3. Fixed base; 31. Puncture needle fixing seat ; 32. Motherboard base slot; 33. Fixing plate mounting hole; 34. Brain-computer board mounting hole; 35. Fastening bolt; 4. Motherboard base; 40. Electrode welding hole; 41. Motherboard socket; 42. Glue injection hole; 5. Brain-computer motherboard; 50. Motherboard pin; 51. Power module; 52. Signal processing module; 53. Bluetooth transmission module; 54. Signal coil; 55. Wireless charging coil; 56. Protection module; 57. Protection shell; 6. Indwelling brain-computer interface; 60. Minimally invasive implant module; 61. Implanted neural component. DETAILED DESCRIPTION

[0038] like Figure 1-9 As shown, a minimally invasive indwelling carbon fiber microelectrode brain-computer device includes an indwelling brain-computer interface 6 and a brain-computer control module. The indwelling brain-computer interface 6 and the brain-computer control module can be detachably connected to achieve neural signal transmission; the indwelling brain-computer interface 6 includes a minimally invasive implant module 60 and an implanted neural component 61;

[0039] The minimally invasive implantation module 60 includes a fixed base 3 and a puncture fixing needle 2, and the fixed base 3 is used to be fixed on the organism to form a puncture base. When the fixed base 3 is fixed on the organism, three fixing plate mounting holes 33 are evenly distributed around the fixed base 3. The fixing bolts pass through the fixing plate mounting holes 33 and are connected to the organism to lock the fixed base 3 on the organism. The fixing bolts can be titanium nails; the puncture fixing needle 2 is fixedly mounted on the puncture pusher, and the puncture fixing needle 2 is driven by the puncture pusher to puncture the organism. After the puncture fixing needle 2 passes through the puncture base, it is implanted into the organism and forms a nerve implantation channel. A puncture needle fixing seat 31 for guiding and limiting the puncture fixing needle 2 is provided on the fixed base 3. The puncture needle fixing seat 31 is used to guide and limit the puncture fixing needle 2. The organism is a skull or tissue. The puncture fixing needle 2 and the fixed base 3 constitute a mounting platform for implanting a neural component 61;

[0040] The neural implant component 61 includes a plurality of carbon fiber microelectrodes 1 arranged in an array and a main board base 4. The intracerebral end of the carbon fiber microelectrode 1 passes through the neural implant channel and is implanted in the target brain area. The extracorporeal end of the carbon fiber microelectrode 1 is electrically connected to the main board base 4. The main board base 4 is fixedly mounted on the fixed base 3.

[0041] The brain-computer control module includes a brain-computer motherboard 5, the lower end of which is provided with motherboard pins 50, which are arranged in two rows. The upper end of the motherboard base 4 is provided with a motherboard socket 41, which is arranged in two rows. The motherboard pins 50 and the motherboard sockets 41 are arranged in a one-to-one correspondence and plug-fit to achieve neural signal transmission. The brain-computer motherboard and the fixed base are fixedly connected by fastening bolts 35. Signal connection is achieved by plugging and fitting the motherboard pins 50 and the motherboard sockets 41, and a replaceable group is formed for easy replacement. In specific implementation, the brain-computer motherboard 5 is a multi-layer PCB board. The motherboard pins 50 can be set as convex pins below the brain-computer motherboard, or can be semi-spherical points, cylindrical contacts or other structural forms, all of which are covered by the solutions of this application. In this embodiment, the motherboard pins are in the shape of semi-spherical convex points with a diameter of 0.2-0.6 mm, and are connected to the signal acquisition / processing potential of the signal processing module 52 of the brain-computer motherboard 5.

[0042] The brain-computer control module is installed on the indwelling brain-computer interface 6, and the neural carbon fiber microelectrode 1 that needs to be implanted is permanently retained in the organism. The brain-computer main board 5 equipped with a processing system and a feedback system is installed outside the organism. The minimally invasive damage is small, and the brain-computer main board 5 can also be quickly replaced. The operator completes the minimally invasive excavation surgery at the target position in the area where the neural device needs to be implanted, and installs the minimally invasive implant module 60 to form a firm neural implant channel. The targeted neural implant operator can first assemble the carbon fiber microelectrode 1 and the main board base 4 into an implanted neural component 61, and then perform a neural implant surgery through the neural implant channel of the minimally invasive implant module 60. The implanted carbon fiber microelectrode 1 can also be numbered before implantation, and then the numbered carbon fiber microelectrode 1 is installed in the corresponding electrode welding hole, and after welding, the implanted neural component 61 is formed.

[0043] In this specific embodiment, the outer side of the carbon fiber microelectrode 1 is sequentially provided with a signal coating 12 and an outer insulating layer 13. The length of the signal coating 12 and the outer insulating layer 13 is greater than the length of the puncture fixation needle 2. A welding gold point 14 is crystallized at one end of the signal coating 12. The mainboard base 4 is provided with an electrode welding hole 40 corresponding to each carbon fiber microelectrode 1. The welding gold point 14 is welded to the electrode welding hole 40 to form an electrical connection. The electrode welding hole 40 is electrically connected to the mainboard socket 41 in a one-to-one correspondence.

[0044] The number of implanted carbon fiber microelectrodes 1 is 10-20. The carbon fiber microelectrode is a flexible carbon fiber microelectrode wire 11. The signal coating 12 crystallized on the outside of the carbon fiber microelectrode 1 can be coated by CVD titanium / gold plating or other methods to enhance the electrochemical performance, prevent protein adsorption or electrolyte erosion, extend the electrode life, and mechanically reinforce the carbon fiber microelectrode. Because multiple carbon fiber microelectrodes 1 need to be implanted, a biocompatible outer insulating layer 13 is coated on one section of the carbon fiber microelectrode 1 to insulate adjacent carbon fiber microelectrodes 1, making signal transmission more accurate. The length of the signal coating 12 and the outer insulating layer 13 needs to be 3-5 mm longer than the puncture fixation needle. The ends of the signal coating 12 and the outer insulating layer 13 extend beyond the puncture fixation needle. One end of the signal coating 12 is crystallized and welded with a gold point 14. The gold point 14 is located outside the insulating coating 13. The carbon fiber microelectrode 1 is welded to the electrode welding hole 40 on the mainboard base 4 through the gold point 14 to form an electrical connection. The electrode welding holes 40 are dispersed in the middle of the mainboard base 4, corresponding to the nerve implantation channel setting, which is more convenient for connection with the carbon fiber microelectrode.

[0045] In this embodiment, the puncture and fixation needle 2 has a double-tube structure with a diameter of 2-10 mm. The puncture and fixation needle 2 comprises an outer needle tube 21 and an inner needle tube 20, with the outer needle tube 21 being sleeved outside the inner needle tube 20. Both the inner needle tube 20 and the outer needle tube 21 are connected to a puncture pusher. After the puncture pusher propels the puncture and fixation needle into the body, the inner needle tube 20 is withdrawn and the outer needle tube 21 is firmly expanded in the body. The inner needle tube 20 can be made of stainless steel or other hard medical metals, while the outer needle tube 21 should be made of a metal with good biocompatibility that can be implanted in the body, such as titanium.

[0046] In this embodiment, one end of the inner needle tube 20 is a bionic mandibular puncture head, which includes an external thread 200. One end of the outer needle tube 21 is provided with an internal thread 210. When the outer needle tube 21 is sleeved outside the inner needle tube 20, the internal thread 210 of the outer needle tube 21 is threadedly connected to the external thread 200 at the end of the inner needle tube 20. During puncture, the inner and outer needle tubes are connected by the thread, making the puncture fixation needle more integrated and the puncture process more stable and reliable.

[0047] In this specific embodiment, the bionic mandibular puncture head further includes an expansion protrusion 201 located at the end of the inner needle tube 20. The expansion protrusion 201 is a curved ball head. The outer thread 200 is a multi-stage structure with slots. The expansion protrusion 201 is arranged opposite the slots. The outer thread 200 and the expansion protrusion 201 can be arranged in a cross-staggered manner. The interior of the outer needle tube 21 is provided with a plurality of spaced inner protrusions 212. The exterior of the outer needle tube 21 is provided with fastening protrusions 211 corresponding to the inner protrusions 212. After the puncture needle is inserted into the organism, the inner needle tube 20 is withdrawn outward, and the expansion protrusion 201 squeezes the inner protrusion 212, transferring the longitudinal pulling force to form a lateral thrust, causing the fastening protrusion 211 on the outer side of the outer needle tube to embed into the organism, making the outer needle tube installation more reliable and stable.

[0048] In this specific embodiment, the other end of the inner needle tube 20 is provided with an inner needle tube slot 204 and an outer sealing slot is provided on the outside, and an outer sealing rubber ring 203 is embedded in the outer sealing slot; the other end of the outer needle tube 21 is provided with a limit clamp 214 and an inner sealing slot is provided on the inner side of the limit clamp 214, and an inner sealing rubber ring 213 is embedded in the inner sealing slot, and the middle of the outer limit clamp is an outer needle tube slot 215; the inner needle tube slot 204 and the outer needle tube slot 215 are used to connect to the puncture pusher. The inner needle tube slot 204 and the outer needle tube slot 215 are both regular hexagonal slots with inscribed circles; the puncture pusher has a connector connected to the inner needle tube slot 204 and the outer needle tube slot 215.

[0049] In this specific embodiment, the fixed base 3 is provided with a motherboard base slot 32, and the motherboard base 4 is placed in the motherboard base slot 32. The motherboard base 4 is provided with a glue injection hole 42. The glue injection hole 42 is located at the center of the motherboard base 4, which can ensure uniform injection of glue. The glue can be injected into the neural implant channel through the glue injection hole 42 to complete the glue filling assembly of the indwelling brain-computer interface. The operator injects biocompatible sealant through the glue injection hole 42 in the motherboard base 4, and the glue completely fills the neural implant channel. The minimally invasive implant module 60 and the implanted neural component 61 are assembled by glue filling to form the indwelling brain-computer interface 6.

[0050] In this specific embodiment, the brain-computer motherboard 5 is equipped with a power module 51, a signal processing module 52, a Bluetooth transmission module 53, a signal coil 54, a wireless charging coil 55, a protective module 56, and a protective housing 57. These modules are located within the protective housing 57. The brain-computer motherboard 5 is a circular micro-integrated circuit board measuring 20-30 mm. The wireless charging coil 55 is located on the outside of the brain-computer motherboard 5. The wireless Bluetooth signal amplification coil, or signal coil 54, is located in the center. The various functional modules are distributed within the inner ring. The protective housing 57 is micro-hemispherical. The functional modules of the brain-computer motherboard 5 are rationally arranged. The wireless charging coil 55 is located in the outer ring, which reduces the number of coil turns and significantly reduces the overall volume. The signal coil 54 is placed in the middle ring, allowing for conical windings, further reducing the volume. The outer side of the brain-computer motherboard 5 is provided with three motherboard mounting ears, spaced 120 degrees apart. The outer side of the fixed base is provided with a brain-computer board mounting hole 34, and the motherboard mounting ears are arranged directly opposite the brain-computer board mounting hole 34. The motherboard mounting ears and the brain-computer board mounting hole 34 can be firmly connected by fastening screws 35.

[0051] The carbon fiber microelectrode 1 is welded to the electrode welding hole 40 on the motherboard base 4 via the welding gold point 14 at the end of the signal coating 12 provided on the outside. The electrode welding hole 40 is electrically connected to the motherboard socket 41 in a one-to-one correspondence. The motherboard socket 41 corresponds to the motherboard pin 50 at the lower end of the brain-computer motherboard and plugs into it to achieve electrical connection. The motherboard pin on the brain-computer motherboard is electrically connected to the input end of the signal processing module 52, forming a bioelectric signal acquisition link. The output end of the signal processing module 52 is connected to the Bluetooth transmission module 53, which amplifies the signal through the signal coil 54 and transmits the collected data to an external terminal. The protection module 56 performs circuit protection. The wireless charging coil 55 provides power input to the power module 51, which then supplies power to other functional modules.

[0052] During specific implementation, the brain-computer motherboard 5 integrates the signal processing execution function as one, and sets the processing method according to the condition or needs. For example, the signal processing module 52 sends an electrical signal to the implanted neural component as required, and the Bluetooth transmission module 53 sends data to an external computer or APP in a timely / real-time manner, which is convenient for R&D personnel or other operators to grasp the condition or data.

[0053] During specific implementation, the brain-computer motherboard 5 can be used as a signal execution module. The operator controls the host to send signals externally according to the condition or needs, sets the processing method, and the R&D personnel or other operators use an external computer or APP to send electrical signals. The Bluetooth transmission module 53 receives the signal and the signal processing module 52 executes it.

[0054] In this brain-computer device, the indwelling brain-computer interface 6 is implanted into the organism using minimally invasive surgery, and the brain-computer control module 5 is located outside the organism, which can more conveniently complete the surgery, greatly reduce the implant volume, reduce damage, and also allow the brain-computer motherboard to be quickly replaced.

[0055] Working principle:

[0056] Installing an indwelling brain-computer interface in a living organism:

[0057] A fixing bolt is passed through the fixing plate mounting hole 33 on the fixing base 3 and connected to the biological body to form a puncture base. The puncture pusher is connected to the puncture fixing needle 2, pushing the puncture fixing needle 2 through the puncture needle fixing seat 31 on the fixing base 3 and implanting it into the biological body. After the puncture is completed, the inner needle tube 20 is withdrawn, and the expanded protrusion 201 squeezes the inner protrusion 212, transferring the longitudinal pulling force to form a lateral thrust, so that the fastening protrusion 211 on the outer side of the outer needle tube is embedded in the biological body, forming a nerve implantation channel.

[0058] The targeted nerve implant operator can first assemble the carbon fiber microelectrode 1 and the mainboard base 4 into the implanted nerve component 61, and then perform the nerve implantation surgery through the nerve implantation channel; or the implanted carbon fiber microelectrodes 1 can be numbered before implantation, and then the numbered carbon fiber microelectrodes 1 are installed in the corresponding electrode welding holes, and after welding, the implanted nerve component 61 is formed;

[0059] The operator injects biocompatible sealant through the injection hole 42 in the mainboard base 4. The glue completely fills the neural implant channel. The minimally invasive implant module 60 and the implanted neural component 61 are assembled by injecting glue to form the indwelling brain-computer interface 6.

[0060] Plug the motherboard pins of the brain-computer motherboard into the motherboard sockets on the motherboard base, and use fastening bolts to fix the brain-computer motherboard and the motherboard base.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A minimally invasive indwelling carbon fiber microelectrode brain-computer interface device, characterized by: It includes an indwelling brain-computer interface (6) and a brain-computer control module; The indwelling brain-computer interface comprises a minimally invasive implant module (60) and an implanted neural component (61); the minimally invasive implant module (61) comprises a fixed base (3) and a puncture fixation needle (2); the fixed base (3) is used to be fixed on a biological body to form a puncture base, and the puncture fixation needle (2) is implanted into the biological body after passing through the puncture base to form a neural implantation channel; the implanted neural component comprises a plurality of carbon fiber microelectrodes (1) arranged in an array and a mainboard base (4); the intracerebral end of the carbon fiber microelectrode (1) passes through the neural implantation channel and is directionally implanted into the target brain area, and the extracerebral end of the carbon fiber microelectrode (1) is electrically connected to the mainboard base (4); the mainboard base (4) is fixedly mounted on the fixed base (3); The brain-computer control module comprises a brain-computer motherboard (5), the lower end of the brain-computer motherboard (5) is provided with a motherboard pin (50), the upper end of the motherboard base (4) is provided with a motherboard socket (41), and the motherboard pin (50) and the motherboard socket (41) are plugged together to realize neural signal transmission.

2. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 1, characterized in that: The outer side of the carbon fiber microelectrode (1) is sequentially provided with a signal coating (12) and an outer insulating layer (13), the length of the signal coating (12) and the outer insulating layer (13) is greater than the length of the puncture fixation needle (2), one end of the signal coating (12) is crystallized with a welding gold point (14), the mainboard base (3) is provided with an electrode welding hole (40) corresponding to each carbon fiber microelectrode (1), the welding gold point (14) and the electrode welding hole (40) are welded to form an electrical connection, and the electrode welding hole (40) is electrically connected to the mainboard socket (41) in a one-to-one correspondence.

3. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 1, characterized in that: The puncture and fixation needle (2) is an inner and outer double-tube structure, comprising an outer needle tube (21) and an inner needle tube (20), wherein the outer needle tube (21) is sleeved on the outer side of the inner needle tube (20).

4. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 3, characterized in that: One end of the inner needle tube (20) is a bionic mandibular puncture head, and the bionic mandibular puncture head includes an external thread. One end of the outer needle tube (21) is provided with an internal thread (210). When the outer needle tube (21) is sleeved on the outside of the inner needle tube (20), the internal thread (210) of the outer needle tube (21) is used to be threadedly connected with the external thread (200) at the end of the inner needle tube (20).

5. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 4, characterized in that: The bionic mandibular puncture head further comprises an expansion convex point (201), the expansion convex point (201) being located at the end of the inner needle tube (20), the outer thread (200) being a multi-stage structure provided with a slot, and the expansion convex point (201) being arranged opposite the slot; the interior of the outer needle tube (21) is provided with a plurality of inner convex points (212) arranged at intervals, and the exterior of the outer needle tube (21) is provided with a fastening convex point (211) corresponding to the inner convex point (212).

6. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 4, characterized in that: The other end of the inner needle tube (20) is provided with an inner needle tube slot (204) and an outer sealing slot is provided on the outside, and an outer sealing rubber ring (203) is embedded in the outer sealing slot; the other end of the outer needle tube (21) is provided with a limiting clamping ring (214) and an inner sealing slot is provided on the inner side of the limiting clamping ring (214), and an inner sealing rubber ring (213) is embedded in the inner sealing slot, and the middle of the outer limiting clamping ring (214) is an outer needle tube slot (215); the inner needle tube slot (204) and the outer needle tube slot (215) are used to connect with the puncture pusher.

7. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 1, characterized in that: The fixed base (3) is provided with a puncture needle fixing seat (31) for guiding and limiting the puncture fixing needle (2), and the fixed base (2) is provided with at least two fixing plate mounting holes (33) in the circumference. The fixing bolts pass through the fixing plate mounting holes (33) and are connected to the organism to lock the fixed base (3) on the organism.

8. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 1, characterized in that: The fixed base (3) is provided with a motherboard base slot (32) for placing the motherboard base (4), and the motherboard base (4) is provided with a glue injection hole (42), through which glue is injected into the neural implant channel to complete the glue filling assembly of the indwelling brain-computer interface.

9. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 1, characterized in that: The brain-computer motherboard (5) is provided with a power module (51), a signal processing module (52), a Bluetooth transmission module (53), a signal coil (54), a wireless charging coil (55), a protection module (56) and a protection shell (57); the power module (51), the signal processing module (52), the Bluetooth transmission module (53), the signal coil (54), the wireless charging coil (55) and the protection module (56) are located in the protection shell (57).

10. The minimally invasive indwelling carbon fiber microelectrode brain-computer interface device according to claim 9, characterized in that: The wireless charging coil (55) is arranged on the outside of the brain-computer motherboard (5), and the signal coil (54) is located in the middle of the brain-computer motherboard (5).

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