Implantable nerve acquisition and stimulation system

Abstract

The utility model belongs to the technical field of implantable medical instruments, and particularly relates to an implantable nerve acquisition and stimulation system, which comprises a main controller; the plurality of sub-controllers are respectively and electrically connected with the main controller in a wired manner through connecting wires; the plurality of acquisition stimulation units are electrically connected with the corresponding sub-controllers in a wired manner; wherein the sub-controller is provided with a first circuit assembly, and the first circuit assembly comprises a digital-to-analog conversion circuit and an analog-to-digital conversion circuit. The analog-to-digital conversion circuit converts multiple analog electric signals acquired by the acquisition stimulation unit into at least one digital electric signal and transmits the digital electric signal to the main controller through a connecting line; or the digital-to-analog conversion circuit converts the stimulation digital electric signals into multi-path analog electric signals through the sub-controller and transmits the multi-path analog electric signals to the acquisition stimulation unit. The main controller and the sub-controller carry out labor division processing on multiple paths of analog electric signals, so that the energy consumption and heating of the main controller can be reduced, and the number of channels can be increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to implantable medical instrument technical field, concretely relates to an implantable nerve collection stimulation system. BACKGROUND

[0002] Implantable nerve regulation products are limited by implant volume, power consumption, packaging process and other factors, resulting in low channel number of the product, which cannot meet the collection and stimulation needs in the field of nerve regulation. Since the implant body is generally packaged with a titanium shell, there is a battery and a coupling coil for charging inside, and there is metal on the coupling path, increasing the channel number will not only result in a large implant body volume and poor sealing, but also cause the processor power to increase, affecting the implant difficulty and postoperative life. Therefore, how to solve the problems of high throughput and sealing has always been a technical problem of implantable nerve regulation products.

[0003] For example, patent number CN118402799A discloses a nerve interface device, electrode preparation method and replacement device method, which discloses in the specification that the first conductive contact of the first feedthrough sheet is electrically connected with the nerve signal circuit inside the implantable shell, and then the contact part of the electrode proximal end is electrically connected with the first conductive contact of the first feedthrough sheet through the interlayer connector, thereby considering the detachability and sealing. The interlayer connector 400 includes a matrix and an array of conductive contacts penetrating the matrix, for example, the interlayer connector 400 can be an ACF film (anisotropic conductive film), an LGA connector (Land Grid Array Connector, Land Grid Array Packaging Connector), or other two-dimensional dot array connectors with first and second surfaces. The interlayer connector 400 is used for electrical interconnection between the proximal contact part 310 of the flexible nerve electrode 300 of the high-throughput nerve and the electronic device 1. Obviously, this technical solution ignores the occupancy of analog electrical signals on the channel number, resulting in limited increment of the number of channels. The main problem is to solve the sealing problem during the detachable process, as described in paragraphs 0144-0145 of the specification, "further, when the original implantable shell is removed, the original nerve electrode is not removed. Further, when connecting the proximal contact part of the flexible nerve electrode with the first feedthrough sheet of the new implantable shell, a detachable connection method is adopted. The proximal contact part of the flexible nerve electrode is consistent with the contact of the new implantable shell, and the positioning pin can also match the corresponding proximal structure of the flexible nerve electrode, so that the electrode can be directly connected to the new implantable shell; when it is necessary to replace the implantable shell, the gland can be opened, and the separation of the flexible nerve electrode and the implantable shell can be realized very conveniently." SUMMARY

[0004] The utility model provides a kind of implantable nerve collection stimulation system, and the division processing of multiple analog electrical signals is realized by main, branch controller, to realize digital-analog or analog-digital conversion in the transmission process of electrical signal.

[0005] In order to solve the above technical problems, the utility model provides a kind of implantable nerve collection stimulation system, comprising: main controller;Several sub-controllers are connected with main controller by connection line wiredly;Several collection stimulation units are wiredly connected with corresponding sub-controller;Wherein, first circuit component is arranged on the sub-controller, including digital-analog conversion circuit, analog-digital conversion circuit.

[0006] Further, the sub-controller includes: a first housing, a first feed-through flange, a second housing assembled into a first closed space;Wherein the first circuit component is located in the first closed space and between the first feed-through flange and the second housing;The first feed-through flange includes a flange plate, a first feed-through area and a second feed-through area are provided on the flange plate;The two sides of the first feed-through area are respectively connected to the collection stimulation unit and the first circuit component;The two sides of the second feed-through area are respectively connected to the first circuit component and the connection line.

[0007] Further, the collection stimulation unit includes: an electrode sheet having a plurality of electrode contacts provided thereon;A sheet-shaped lead protrudes from the side of the electrode sheet and extends into the first closed space;A lead dot matrix is located at the end of the sheet-shaped lead and is electrically connected to each electrode contact through a conductive circuit.

[0008] Further, the first circuit component further includes: a first circuit board, a first connection point array and a second connection point array are respectively located on the first circuit board;The lead dot matrix is electrically connected to the first connection point array;The connection line is electrically connected to the second connection point array;The digital-analog conversion circuit and the analog-digital conversion circuit are respectively provided on the first circuit board.

[0009] Further, a plurality of solder pads are provided on the first feed-through area, and the two ends of the solder pads are respectively electrically connected to the first connection point array and the lead dot matrix;A plurality of first feed needles are provided on the second feed-through area, and the two ends of the first feed needles are respectively electrically connected to the second connection point array and the connection line.

[0010] Further, a notch is provided on the side of the first housing for inserting the sheet-shaped lead into the first closed space.

[0011] Further, the main controller includes: a second housing having an opening on the side;A second circuit component is disposed inside the second housing from the opening;A second feed-through flange covers the opening to form a second closed space;Wherein the two sides of the second feed-through flange are respectively electrically connected to the second circuit component and the connection line.

[0012] Further, the second feedthrough flange comprises: a feedthrough cover covering the opening; an array of conductive rings located outside the feedthrough cover; and a third feedthrough area provided on the feedthrough cover, wherein a plurality of second feed pins are provided on the third feedthrough area and electrically connected to the second circuit assembly and the array of conductive rings at two ends thereof.

[0013] Further, the array of conductive rings is in a rod shape, and a first conductive ring electrically connected to the second feed pin is arranged on the side surface of the array of conductive rings, and a plug-in hole electrically connected to the connecting wire is arranged at the end of the array of conductive rings.

[0014] Further, the connecting wire is configured as a multi-path concentric cable, one end of the multi-path concentric cable is connected to the first feed pin, and the other end of the multi-path concentric cable is provided with a second conductive ring electrically connected to the plug-in hole.

[0015] Further, the second circuit assembly comprises: a second circuit board; an in-vivo coil arranged on one side of the second circuit board; and a magnetic isolation sheet arranged on the other side of the second circuit board, wherein a placement hole for accommodating an in-vivo magnet is formed in the middle of the magnetic isolation sheet.

[0016] The implantable nerve acquisition and stimulation system of the utility model has wired connection between the sub-controller and the main controller, and wired connection between the acquisition and stimulation unit and the corresponding sub-controller, in the signal transmission process, the sub-controller is used for converting the multi-path analog electric signal collected by the acquisition and stimulation unit into at least one digital electric signal, the occupied amount of the channel number can be reduced, then the digital electric signal is transmitted to the main controller through the connecting wire, the main controller is used for analyzing and processing or transmitting to the external machine, so that the excessive occupation of the channel number by the analog electric signal in the signal transmission process is avoided, more channel numbers can be left for the acquisition electrode under the condition that the volume of the implantable body is unchanged.

[0017] Other features and advantages of the utility model will be set forth in the subsequent description, and, to some extent, become apparent from the description, or be understood through implementation of the utility model. The purpose and other advantages of the utility model are realized and obtained through the structure specially pointed out in the description, claims and drawings.

[0018] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken as examples, and the detailed description is as follows in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is a structural schematic diagram of an implantable nerve acquisition and stimulation system.

[0021] Figure 2 It is a principle block diagram of an implantable nerve acquisition and stimulation system.

[0022] Figure 3 It is a structural explosion schematic diagram of a sub-controller.

[0023] Figure 4 It is a sectional view of a sub-controller.

[0024] Figure 5 It is a structural schematic diagram of a first feed-through flange.

[0025] Figure 6 It is a structural schematic diagram of a first circuit assembly.

[0026] Figure 7 It is a structural explosion schematic diagram of a main controller.

[0027] Figure 8 It is a structural schematic diagram of a main controller.

[0028] In the drawings:

[0029] Main controller 1, second shell 11, third metal connecting piece 111, second circuit assembly 12, second circuit board 121, in-vivo coil 122, magnetic isolation sheet 123, placement hole 1231, inner magnet 124, second feed-through flange 13, feed-through cover 131, array of conductive rings 132, first conductive ring 1321, plug-in hole 1322, third feed-through area 133, second protective layer 14;

[0030] Sub-controller 2, first shell 21, first outer shell 211, notch 2111, first feed-through flange 212, flange plate 2121, first feed-through area 2122, second feed-through area 2123, first metal connecting piece 2124, second metal connecting piece 2125, second outer shell 213, first circuit assembly 22, first circuit board 221, array of second connecting points 222, first protective layer 23;

[0031] Connecting line 3, second conductive ring 31;

[0032] Stimulation acquisition unit 4, electrode sheet 41, electrode contact 411, sheet lead 42, lead dot matrix 43. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Because analog electrical signals require a one-to-one relationship with the acquisition channel for signal analysis, and implants are limited by surgical and long-term use requirements, there are strict limitations on processor power consumption and heat generation, preventing the simultaneous processing of signals from a large number of channels. Therefore, high-throughput implants cannot be developed. Figures 1-8 As shown, this embodiment provides an implantable neural acquisition and stimulation system, including: a main controller 1; several sub-controllers 2, which are wired to the main controller 1 via connecting lines 3; several acquisition and stimulation units 4, which are wired to the corresponding sub-controllers 2; each sub-controller 2 is provided with a first circuit component 22, including a digital-to-analog conversion circuit and an analog-to-digital conversion circuit.

[0035] Specifically, the sub-controller 2 converts the multiple analog electrical signals acquired by the stimulation acquisition unit 4 into at least one digital electrical signal and transmits it to the main controller 1 via the connecting line 3; or the main controller 1 converts the stimulation digital electrical signals into multiple analog electrical signals via the sub-controller 2 and transmits them to the stimulation acquisition unit 4. The process is as follows: see Figure 2The connection mode between the in-vivo machine and the in-vitro machine is that the main controller is wirelessly coupled with the in-vivo coil and the in-vitro coil to obtain energy and perform data transmission; the connection relationship between the components of the in-vivo machine is that the main controller is wirelessly connected with the sub-controller to supply energy to the sub-controller and perform data transmission; the sub-controller is wirelessly connected with the collection and stimulation unit to supply energy to the collection and stimulation unit and perform data transmission. The specific working process is as follows: when performing a collection task, each collection and stimulation unit or electrode sheet transmits the collected multi-channel analog electrical signals to the sub-controller, the sub-controller converts the multi-channel analog electrical signals into at least one digital electrical signal and transmits the digital electrical signal to the main controller through the multi-channel concentric cable, and the main controller transmits the digital electrical signal to the in-vitro machine through coil coupling, or the main controller does not need to transmit the digital electrical signal, and detects or stimulates the digital electrical signal according to the trained or set threshold parameter. On the contrary, when performing a stimulation task, the main controller transmits the digital electrical signal to the corresponding sub-controller through the connection line after making a stimulation instruction according to the trained or set threshold parameter, the sub-controller converts the digital electrical signal into multi-channel analog electrical signals and transmits the analog electrical signals to the collection and stimulation unit, and the collection and stimulation unit sends an electrical stimulation signal to the tissue. Obviously, the main controller receives or sends digital electrical signals; the sub-controller acts as an intermediary between the collection and stimulation unit and the main controller and is responsible for the digital-to-analog or analog-to-digital conversion of the electrical signals. In this process, the main controller is responsible for coupling with the in-vitro machine, obtaining electrical energy and supplying energy to the sub-controller and the collection and stimulation unit, which significantly reduces the energy consumption and power limitation of the main controller and avoids the distortion of the electrical signal in the transmission process. However, compared with the prior art, the sub-controller is added, which increases the connection and sealing of the sub-controller and the collection and stimulation unit, the connection and sealing of the sub-controller and the main controller, and the number of circuits at both ends of the sub-controller, which requires special structural design to meet the one-to-one circuit connection and sealing requirements. The specific connection relationship and technical scheme are as follows:

[0036] As an optional embodiment of the collection and stimulation unit.

[0037] See Figure 3 The collection and stimulation unit 4 comprises: an electrode sheet 41, on which a plurality of electrode contacts 411 are arranged; a sheet-shaped lead 42 protruding from the side of the electrode sheet 41 and extending to the inside of the sub-controller 2; and a lead dot matrix 43 located at the end of the sheet-shaped lead 42 and electrically connected with each electrode contact 411 through a conductive circuit one by one.

[0038] Optionally, the collection and stimulation unit 4 can be arranged as needed, and forms a one-to-one correspondence relationship with the sub-controller 2, so as to realize the digital-to-analog conversion of the stimulation electrical signal from the main controller to the collection and stimulation unit through the sub-controller, or realize the analog-to-digital conversion of the collection signal from the collection and stimulation unit to the main controller through the sub-controller.

[0039] As an optional implementation of the sub-controller.

[0040] See Figure 3 , Figure 4 , Figure 5 The sub-controller 2 comprises: a first shell 21, which is assembled into a first closed space by a first outer shell 211, a first feed-through flange 212 and a second outer shell 213; wherein a first circuit assembly 22 is located between the first feed-through flange 211 and the second outer shell 213; the first feed-through flange 212 comprises a flange plate 2121, which is provided with a first feed-through area 2122 and a second feed-through area 2123; the two sides of the first feed-through area 2122 are respectively electrically connected to the collection stimulation unit 4 and the first circuit assembly 22; and the two sides of the second feed-through area 2123 are respectively electrically connected to the first circuit assembly 22 and the connecting line 3.

[0041] Optionally, see Figure 6 The first circuit assembly 22 comprises: a first circuit board 221, and a first connection point array and a second connection point array 222 located on the first circuit board 221 respectively; wherein the lead point array 43 is electrically connected to the first circuit board 221 through the first connection point array; the connecting line 3 is electrically connected to the first circuit board 221 through the second connection point array 222; and the digital-analog conversion circuit and the analog-digital conversion circuit are respectively arranged on the first circuit board 221. The specific structure is as follows: see Figure 3 and Figure 4 The side surface of the first outer shell 211 is provided with a notch 2111, so as to insert the sheet-shaped lead 42 into the first closed space, that is, the sheet-shaped lead 42 is located between the flange plate 2121 and the first outer shell 211, and the lead point array 43 on the sheet-shaped lead 42 can be welded at the pad end of the first feed-through area 2122. See Figure 5, the first feedthrough flange 212 is configured as a flange plate 2121 made of metal, the first feedthrough region 2122 and the second feedthrough region 2123 on the flange plate 2121 are both ceramic bodies, and are welded on the flange plate 2121 by a ceramic metallization method, that is, two through holes are first formed in the metal flange plate 2121, metal connecting pieces are then welded at the through holes, the first feedthrough region 2122 is then brazed with the first metal connecting piece 2124, and the second feedthrough region 2123 is then brazed with the second metal connecting piece 2125. The first feedthrough region 2122 is provided with a plurality of pads, and the two ends of the pads are respectively connected in point-to-point one-to-one correspondence with the first connection point array and the lead point array 43. The second feedthrough region 2123 is provided with a plurality of first feedthrough pins, the two ends of the first feedthrough pins protrude from the two sides of the flange plate 2121, and are respectively connected in point-to-point one-to-one correspondence with the second connection point array 222 and the multiple lines of the connection line 3, thereby forming an electrical connection path of the stimulation acquisition unit-sub-controller (in which digital-to-analog conversion or analog-to-digital conversion of electrical signals is implemented)-connection line-main controller, so that the first circuit assembly can realize conversion of digital electrical signals to analog signals when performing electrical stimulation functions, and realize conversion of analog signals to digital electrical signals when performing acquisition tasks. In particular, the electrode sheet and the first circuit board are connected in a point array to point array direct alignment connection mode at the first end of the sub-controller, which is beneficial to the transmission of analog electrical signals and the sealing property, and the point array to multi-channel concentric cable connection mode is adopted at the second end of the sub-controller, which is beneficial to reducing the number of channels occupied by digital electrical signals. Obviously, the number of pads (i.e., the number of channels) is significantly more than the number of first feedthrough pins.

[0042] Optionally, the first circuit board is configured as, for example but not limited to, an FPGA development board, and the FPGA development board directly controls a plurality of analog sub-cards, and contains an ADC chip (i.e., an analog-to-digital conversion circuit), a DAC chip (i.e., a digital-to-analog conversion circuit), and a peripheral circuit. The FPGA development board is configured as a control chip of the sub-controller, and is configured as a signal generator. When performing electrical stimulation functions, a stimulation waveform can be generated according to a stimulation protocol sent by the main controller and transmitted to the DAC chip, the DAC chip converts the stimulation waveform (digital signal) into an electrical stimulation signal (analog signal) and sends it to the corresponding stimulation acquisition unit. When performing signal acquisition tasks, the ADC chip converts the electrophysiological signal (analog signal) collected by the stimulation acquisition unit into a digital electrical signal (digital signal) and uploads it to the main controller. The above-mentioned mutual conversion function of analog signals to digital electrical signals and the implementation circuit thereof belong to the prior art, and the present application does not make substantial improvements thereto.

[0043] Optionally, see Figure 4The first feedthrough flange 212 or flange 2121 is divided into two parts, with the first outer shell 211 mounted on top and the second outer shell 213 below. The first outer shell 211 is a metal part with a flange on its lower periphery, forming an assembly relationship with the upper periphery of the flange 2121. The flange has a notch for inserting the sheet lead 42 into the interior of the first enclosed space. The flange 2121 has a flange on its lower periphery, forming an assembly relationship with the second outer shell 213. Thus, the first outer shell 211, the first feedthrough flange 212, and the second outer shell 213 are assembled to form the first enclosed space. The first enclosed space is divided into upper and lower parts by the first feedthrough flange 212. The upper part is used to insert the sheet lead 42, and the lower part accommodates the first circuit assembly 22. During processing and assembly, the sheet-like lead 42 is first inserted into the interior of the first enclosed space, and electrically connected to the end of the pad via the lead dot matrix 43 by soldering or plugging. The bottom of the pad is then electrically connected point-to-point to the first connection dot matrix (due to...). Figure 6 This is a bottom view of the first circuit board, with the pads located on top of the first circuit board, and the first connection point matrix also located on the top surface of the first circuit board. Figure 6 (The dot matrix arrangement is not visible in the diagram). Since the first connecting dot matrix and the second connecting dot matrix 222 are electrically connected through the first circuit board 221, the second connecting dot matrix 222 is electrically connected to the bottom of the first feed needle, and the top of the first feed needle is electrically connected to the multi-line connection of the connecting line 3. All of the above electrical connection methods can be soldering. Then, the first outer shell 211 is covered on the top of the first feed flange 212, and the second outer shell 213 is covered on the bottom of the first feed flange 212 to form the first closed space. The acquisition stimulation unit 4 and the connecting line 3 are respectively led out from its side. Finally, the first protective layer 23, such as injection-molded silicone, is wrapped around the outside of the sub-controller 2 to realize the electrical connection and sealed assembly between the acquisition stimulation unit and the sub-controller.

[0044] This is one of the alternative implementation methods for the main controller.

[0045] See Figure 7 and Figure 8 The main controller 1 includes: a second housing 11 with an opening on the side; a second circuit assembly 12 disposed inside the second housing 11 through the opening; and a second feedthrough flange 13 covering the opening to form a second enclosed space; wherein the two sides of the second feedthrough flange 13 are electrically connected to the second circuit assembly 12 and the connecting line 3, respectively.

[0046] Optionally, the second housing is made of ceramic material, and its end is brazed to a third metal connector 111 and then welded to a feedthrough cover 131 to form a second enclosed space.

[0047] Optional, see Figure 7 and Figure 8The second feedthrough flange 13 comprises: a feedthrough cover 131 covering the opening; a conductive ring array 132 located outside the feedthrough cover 131; and a third feedthrough area 133 provided on the feedthrough cover 131. The third feedthrough area 133 is provided with a plurality of second feedthrough pins, the two ends of which protrude from the two sides of the feedthrough cover 131 and are respectively electrically connected to the second circuit assembly 12 and the conductive ring array 132.

[0048] Optionally, as shown in Figure 8 The conductive ring array 132 is in the shape of a rod, the side surface of which is provided with a first conductive ring 1321 electrically connected to the second feedthrough pin, and the end thereof is provided with a plug-in hole 1322 electrically connected to the connecting line 3. The connecting line 3 is configured as a multi-channel concentric cable. The first end of the multi-channel concentric cable is connected to the first feedthrough pin, and the second end is provided with a second conductive ring 31 electrically connected to the plug-in hole 1322. When the connecting line 3 is inserted into the plug-in hole 1322, the second conductive ring 31 is in contact with the first conductive ring 1321, forming a one-to-one electrical connection. Therefore, the number of first conductive rings 1321 can be multiple, the same as the number of acquisition units 4 or sub-controllers 2, and each first conductive ring 1321 is independently arranged and electrically insulated to avoid electrical signal interference between different acquisition units 4. The second protective layer 44 can also be wrapped around the outside of the main controller 1 as a whole.

[0049] Optionally, as shown in Figure 7 The second circuit assembly 12 comprises: a second circuit board 121 located inside the second closed space; and an in-vivo coil 122 provided on one side of the second circuit board 121. In order to reduce the occupied space, the in-vivo coil 122 can be directly printed on the second circuit board 121, and energy or signals are transmitted to the in-vivo device by coupling with the in-vivo coil. A magnetic isolation sheet 123 is located on the other side of the second circuit board 121, and a placement hole 1231 for accommodating an in-vivo magnet 124 is formed in the middle of the magnetic isolation sheet 123.

[0050] In the present case, the preparation process of the implantable nerve acquisition and stimulation system comprises: preparing the main controller, the sub-controller and the acquisition and stimulation unit respectively; connecting the acquisition and stimulation unit with the corresponding sub-controller one by one through a wired electrical connection; and connecting each sub-controller with the main controller through a connecting line. The specific process is as follows:

[0051] (1) Preparation of the acquisition and stimulation unit: a bottom layer of silicone sheet is made as an electrode sheet; a metal sheet is bonded with the bottom layer of silicone sheet, and the metal sheet is laser cut to form electrode contacts at the distal end of the electrode sheet and lead point arrays at the proximal end, and the metal sheet between the two forms a conductive circuit; an upper layer of silicone sheet is spin-coated and laser cut to expose the electrode contacts and the lead point arrays.

[0052] (2) the preparation of the main controller comprises: connecting the in-vivo coil with the second circuit component, and installing the magnetic isolation sheet and the inner magnet; welding the second circuit component with the second feed pin on the second feedthrough flange, and then loading into the second shell; welding and packaging the second feedthrough flange with the second shell; welding the second feed pin on the feedthrough cover with the first conductive ring; and integrally injection molding to form the second protective layer.

[0053] (3) the preparation of the sub-controller comprises: welding the first connection point array and the second connection point array on the first circuit component with the pads and the first feed pin on the first feedthrough flange respectively; welding and packaging the first shell with the first feedthrough flange; welding the lead point array and the first end of the connecting wire with the pads and the first feed pin on the first feedthrough flange respectively; welding the second shell with the first feedthrough flange; and integrally injection molding to form the first protective layer.

[0054] (4) connecting each sub-controller with the main controller through the connecting wire comprises: inserting the second conductive ring at the second end of the connecting wire into the plug-in hole of the first conductive ring to realize the electrical connection between the connecting wire and the conductive ring array; arranging and injection molding the conductive ring arrays in the insulating sleeve.

[0055] In summary, the main controller and the sub-controller of the implantable nerve acquisition and stimulation system in the embodiment perform different tasks respectively, can share the power consumption and heat generation, can realize energy supply and signal transmission through the coupling of the in-vivo coil and the in-vitro coil, there is no metal on the coupling path, there is no eddy current heating, the volume of the in-vivo electronic device can be further reduced, the safety of the in-vivo electronic device can be improved, higher internal circuit power consumption can be supported, and more functions such as closed-loop processing can be realized. Especially, the implantable acquisition and stimulation device can support wireless energy supply and transmission, and does not need a battery. Meanwhile, by means of the electrical signal conversion between the acquisition and stimulation unit, the sub-controller and the main controller, the sub-controller is used as a transfer center of analog electrical signals and digital electrical signals, the number of circuits required in the transmission process of the analog electrical signals can be avoided, the demand of the digital electrical signals for performing the stimulation task can be realized, efficient and accurate data acquisition, conversion and transmission can be realized, more channel numbers can be increased by means of the high-density ceramic feedthrough, the volume is smaller, the cost is lower, the volume of the main controller or the sub-controller is smaller, and the surgical implantation is facilitated.

[0056] In the description of the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0057] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the term "first", "second", "third" is only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0058] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, and for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0059] Based on the above ideal embodiments according to the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An implantable neuro-collection stimulation system, comprising: The implantable nerve collection and stimulation system comprises a main controller, a plurality of sub-controllers, a plurality of collection and stimulation units, and a plurality of connection lines. The sub-controllers are connected to the main controller through the connection lines. The sub-controllers are connected to the collection and stimulation units through the connection lines. The sub-controllers are provided with a first circuit assembly, which comprises a digital-to-analog conversion circuit and an analog-to-digital conversion circuit.

2. The implantable nerve collection and stimulation system according to claim 1, wherein the sub-controller further comprises a first housing, which comprises a first shell, a first feed-through flange, and a second shell. The first circuit assembly is located in the first closed space and between the first feed-through flange and the second shell. The first feed-through flange comprises a flange plate, which is provided with a first feed-through area and a second feed-through area. The two sides of the first feed-through area are electrically connected to the collection and stimulation units and the first circuit assembly. The two sides of the second feed-through area are electrically connected to the first circuit assembly and the connection lines.

3. The implantable nerve collection and stimulation system according to claim 2, wherein the collection and stimulation units comprise an electrode sheet, which is provided with a plurality of electrode contacts, and a sheet-shaped lead, which protrudes from the side of the electrode sheet and extends into the first closed space. The lead dot matrix is located at the end of the sheet-shaped lead and is electrically connected to each electrode contact through a conductive circuit.

4. The implantable nerve collection and stimulation system according to claim 3, wherein the first circuit assembly further comprises a first circuit board and a first connection dot matrix and a second connection dot matrix located on the first circuit board. The lead dot matrix is electrically connected to the first connection dot matrix. The connection lines are electrically connected to the second connection dot matrix. The digital-to-analog conversion circuit and the analog-to-digital conversion circuit are arranged on the first circuit board.

5. The implantable nerve collection and stimulation system according to claim 4, wherein the first feed-through area is provided with a plurality of solder pads, the two ends of which are electrically connected to the first connection dot matrix and the lead dot matrix. The second feed-through area is provided with a plurality of first feed needles, the two ends of which are electrically connected to the second connection dot matrix and the connection lines.

6. The implantable nerve collection and stimulation system according to claim 3, wherein the side of the first shell is provided with a notch for the insertion of the sheet-shaped lead into the first closed space.

7. The implantable nerve collection and stimulation system according to claim 1, wherein the main controller comprises a second housing with an opening on the side, a second circuit assembly arranged inside the second housing from the opening, and a second feed-through flange covering the opening to form a second closed space. The two sides of the second feed-through flange are electrically connected to the second circuit assembly and the connection lines.

8. The implantable nerve collection and stimulation system according to claim 7, wherein the second feed-through flange comprises a feed-through cover covering the opening, a conductive ring array located on the outside of the feed-through cover, and a third feed-through area provided on the feed-through cover. The third feed-through area is provided with a plurality of second feed needles, the two ends of which are electrically connected to the second circuit assembly and the conductive ring array. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 9. The implantable nerve collection and stimulation system according to claim 8, wherein the array of conductive rings is in the shape of a rod, the side of which is provided with a first conductive ring electrically connected to the second feed needle, and the end of which is provided with a plug hole electrically connected to the connecting wire.

10. The implantable nerve collection and stimulation system according to claim 9, wherein the connecting wire is configured as a multi-channel concentric cable wire; one end of the multi-channel concentric cable wire is connected to the first feed needle, and the other end is provided with a second conductive ring electrically connected to the plug hole.

11. The implantable nerve collection and stimulation system according to claim 7, wherein the second circuit assembly comprises: a second circuit board; an in-vivo coil provided on one side of the second circuit board; a magnetic isolation sheet provided on the other side of the second circuit board, the middle of which is provided with a placement hole for accommodating the inner magnet. ​ ​ ​

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