Nerve electrical stimulation device and connection module and connection device thereof

Abstract

The present application provides a neural electrical stimulation device and its connection module and connection device, wherein the connection module is used to electrically connect with the electrode wire, and the connection module includes: a first insulating body, the first insulating body having a first outer surface and a connection channel, the connection channel is used to install the plug-in end of the electrode wire, a plurality of first electrical connection contacts are arranged in the connection channel, and the first electrical connection contacts are used to electrically connect with the plug-in contacts on the plug-in end of the electrode wire; the connection module also includes: a plurality of second electrical connection contacts, a plurality of first circuits; each second electrical connection contact is arranged on the first outer surface, and is electrically connected to the first electrical connection contact through the first circuit respectively. The structure of the insulating ring and the metal ring that alternate with each other in the prior art is replaced, so that the connection module has a compact structure, a small volume, less trauma to the patient, and no need to assemble the insulating ring and the metal ring, saving processes, no assembly errors, and good product consistency.

Description

Technical Field

[0001] The present application relates to the technical field of neural electrical stimulation medical equipment, and in particular to a neural electrical stimulation device and a connection module and a connection device thereof. Background Art

[0002] Deep brain stimulation therapy is a reversible neuromodulation therapy that effectively treats related diseases by stimulating different functional nuclei deep in the brain with electrical pulses. At present, deep brain stimulation therapy can be used to treat Parkinson's disease, epilepsy, spasticity, essential tremor and other diseases. It is also being widely used in the treatment of Alzheimer's syndrome, refractory depression, post-stroke rehabilitation, pain and other aspects.

[0003] The implantable part of a traditional deep brain stimulation system generally includes a pulse generator, an extension lead, electrodes, and an electrode fixing device. The pulse generator is implanted under the chest skin and connected to the extension lead, which is connected to the electrode through a subcutaneous tunnel in the neck. The electrode passes through the skull and contacts the target point, and is fixed to the skull by a fixing device.

[0004] Chinese invention patent CN111744110A discloses a pulse generator and implantable neurostimulation system with a single-side wiring slot, including a housing, a circuit board installed inside the housing, and a feedthrough wire electrically connected to the circuit board; the feedthrough wire is used to be inserted into the top cover component and electrically connected to the electrode connection device; at least two electrode connection devices are provided inside the top cover body and arranged in parallel in a direction away from the main body component. It is thinner and lighter, the depth of the bone slot on the skull is shallower, the patient suffers less pain, and the operation is safer.

[0005] However, in the prior art, the connection module (electrode connection device in CN111744110A) of the neural electrical stimulation device (the pulse generator in CN111744110A) includes a connection channel assembled from alternating insulating rings and metal rings (connector 301 in CN111744110A), and the electrical connection between the circuit in the pulse generator and the connection module is often made by wire connection, which makes the connection module larger in size, causing greater trauma to the patient, and is inconvenient to produce and assemble, resulting in assembly errors and poor product consistency. Summary of the invention

[0006] The purpose of the present application is to provide a neural electrical stimulation device and its connection module and connection device, so as to solve the problem that the connection module of the neural electrical stimulation device in the prior art is large in size, causing great trauma to the patient, and is inconvenient in production and assembly, resulting in assembly errors and poor product consistency.

[0007] The purpose of this application is achieved through the following technical solutions:

[0008] In a first aspect, the present application provides a connection module of a neural electrical stimulation device, which is used to electrically connect to an electrode wire, and the connection module includes: a first insulating body, the first insulating body having a first outer surface and a connection channel, the connection channel is used to install the plug-in end of the electrode wire, and a plurality of first electrical connection contacts are arranged in the connection channel, and the first electrical connection contacts are used to electrically connect to the plug-in contacts on the plug-in end of the electrode wire; the connection module also includes: a plurality of second electrical connection contacts and a plurality of first circuits; each of the second electrical connection contacts is arranged on the first outer surface, and is electrically connected to the first electrical connection contact through the first circuit respectively.

[0009] The beneficial effect of this technical solution is that a first electrical connection contact, a first circuit and a second electrical connection contact are arranged on the first insulating body, replacing the structure of insulating rings and metal rings alternating with each other in the prior art, so as to realize the function of electrical connection with the electrode wire. The connection module in this technical solution has a compact structure, a small volume, and less trauma to the patient. There is no need to assemble insulating rings and metal rings, which saves working steps, has no assembly errors and has good product consistency.

[0010] In some optional embodiments, the connection module further includes a plurality of elastic electrical connectors, which are disposed inside the connection channel and are arranged in a straight line along the length direction of the connection channel, and each of the elastic electrical connectors is electrically connected to one of the first electrical connection contacts and is used to electrically connect to one of the plug contacts on the plug end of the electrode wire. The beneficial effect of this technical solution is that the first electrical connection contact is electrically connected to one of the contacts on the plug end of the electrode wire by using the elastic electrical connector, and the elastic electrical connector is elastic, so that the electrical connection between the first electrical connection contact and one of the contacts on the plug end of the electrode wire is more stable.

[0011] In some optional embodiments, the elastic electrical connector is a metal spring ring, which is used to be sleeved on multiple plug-in contacts on the plug-in end of the electrode wire. The beneficial effect of this technical solution is that the metal spring ring and the plug-in contacts on the plug-in end of the electrode wire can be in annular contact, and the electrical contact is more stable. At the same time, the metal spring ring sleeves the plug-in end of the electrode wire, which has a limiting effect on the plug-in end and can enhance the stability of the installation of the plug-in end.

[0012] In some optional embodiments, the first insulating body is composed of at least a first insulating component and a second insulating component, and the material of the first insulating component and / or the second insulating component includes ceramic or plastic; the first insulating component and the second insulating component include a plurality of arc grooves arranged in a straight line along the length direction of the connecting channel, and when the first insulating component and the second insulating component are combined to form the first insulating body, at least part of the structure of the metal spring coil is accommodated in the arc groove; the first electrical connection contact is arranged on at least a part of the surface of the inside of the arc groove that abuts against the metal spring coil. The beneficial effect of this technical solution is that: the first insulating body is formed by combining the split structure, so that the manufacture of the first insulating body is more convenient, and at the same time, it is also convenient to construct the first electrical connection contact and the first circuit on the first insulating body, and it is convenient to assemble the metal spring coil into the first channel; the plurality of arc grooves have a limiting effect on the metal spring coil, so that the installation and electrical contact of the metal spring coil are more stable and reliable.

[0013] In some optional embodiments, the first insulating body includes a plurality of first hole structures, the first hole structures connect the first outer surface and the connection channel, the first circuit includes a first surface circuit arranged on the first outer surface of the first insulating body and a first hole circuit arranged in the first hole structure; the first surface circuit electrically connects the second electrical connection contact and the first hole circuit, and the first hole circuit electrically connects the first electrical connection contact. The beneficial effect of this technical solution is that: a first surface circuit is constructed on the first insulating body, and a first hole structure is arranged, and the first hole circuit is constructed by using the first hole structure to realize the above-mentioned electrical connection. Compared with simply setting a circuit on the surface of the first insulating body, the arrangement of the hole structure can conveniently realize the electrical connection between the first outer surface and the inner surface of the connection channel. At the same time, the first hole structure has a certain protection and limiting effect on the first hole circuit, which prevents the first hole circuit from being damaged and improves the durability of the circuit.

[0014] In some optional embodiments, the first surface circuit, the first hole circuit, the first electrical connection contact, and the second electrical connection contact are conductive films. The beneficial effect of this technical solution is that the conductive film can be formed by using a variety of coating processes, and the first surface circuit, the first hole circuit, the first electrical connection contact, and the second electrical connection contact are constructed by using the conductive film, which is convenient for large-scale production and improves product consistency.

[0015] In the second aspect, the present application also provides a connection device for a neural electrical stimulation device, comprising a connection module and a feedthrough module, wherein the connection module is any of the connection modules mentioned above; the feedthrough module comprises a second insulating body and a plurality of third electrical connection contacts, a fourth electrical connection contact and a plurality of second circuits arranged on the second insulating body, each of the third electrical connection contacts being electrically connected to at least one of the fourth electrical connection contacts through at least one of the second circuits; when the connection module and the feedthrough module are electrically connected, each of the third electrical connection contacts is electrically connected to at least one of the second electrical connection contacts. The beneficial effect of this technical solution is that the feedthrough module is used as an intermediate module to realize the electrical connection between the circuit in the neural electrical stimulation device and the connection module, so that the electrical connection is modularized, which is convenient for standardized production.

[0016] In some optional embodiments, the electrical connection method of the third electrical connection contact and the second electrical connection contact is gold wire welding. The beneficial effects of this technical solution are: gold wire welding can realize automated production, improve production efficiency, improve production standardization level, reduce production costs, improve product consistency, and the electrical connection method of gold wire welding is more stable and reliable than wire welding.

[0017] In some optional embodiments, the second insulating body includes a plurality of second hole structures, the second hole structures penetrate the first surface and the second surface of the second insulating body, the third electrical connection contact is arranged on the first surface of the second insulating body, the fourth electrical connection contact is arranged on the second surface of the second insulating body, the second circuit includes a second surface circuit arranged on the first surface of the second insulating body and a second hole circuit arranged in the second hole structure, the second surface circuit is electrically connected to the third electrical connection contact and the second hole circuit, and the second hole circuit is electrically connected to the fourth electrical connection contact. The beneficial effect of this technical solution is that the setting of the second hole structure can conveniently realize the electrical connection between the first surface and the second surface compared with simply setting the circuit on the surface of the second insulating body. At the same time, the second hole structure has a certain protection and limiting effect on the second hole circuit, avoiding the second hole circuit from being damaged, and improving the durability of the circuit.

[0018] In a third aspect, the present application also provides a neural electrical stimulation device, comprising a device body and any one of the above-mentioned connection modules; or, comprising a device body and any one of the above-mentioned connection devices.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a description of the preferred embodiment of the present application with detailed drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the structure of a neural electrical stimulation device in the prior art;

[0021] Figure 2 It is a schematic cross-sectional view of a part of the structure of a channel connection block of a neural electrical stimulation device in the prior art;

[0022] Figure 3 A schematic cross-sectional structure diagram of a connection module of a neural electrical stimulation device provided in an embodiment of the present application;

[0023] Figure 4 A schematic cross-sectional structure diagram of a connection module of another neural electrical stimulation device provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram from a first perspective of a first insulating component provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of a first insulating component from a second perspective provided in an embodiment of the present application;

[0026] Figure 7 A schematic diagram of a second insulating component provided in an embodiment of the present application;

[0027] Figure 8 A first perspective schematic diagram of a feedthrough module provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of a feedthrough module from a second perspective provided in an embodiment of the present application;

[0029] Fig.10 A schematic diagram of an electrical connection method between a third electrical connection contact and a second electrical connection contact provided in an embodiment of the present application;

[0030] Fig.11 A schematic diagram of the structure of a neural electrical stimulation device provided in an embodiment of the present application.

[0031] In the figure:

[0032] 10. Existing connection assembly; 101. Spring ring; 102. Insulating ring; 103. Metal ring; 104. Feedthrough lead;

[0033] 20. connection module; 201. first insulating body; 202. first outer surface; 203. connection channel; 204. first electrical connection contact; 205. second electrical connection contact; 206. first circuit; 207. elastic electrical connector; 208. metal spring ring;

[0034] 30. plug-in terminal; 301. plug-in contact;

[0035] 40. first insulating component; 401. arc-shaped groove; 402. first hole structure; 403. first surface circuit;

[0036] 50. A second insulating component;

[0037] 60. Feedthrough module; 601. Second insulating body; 602. Third electrical connection contact; 603. Fourth electrical connection contact; 604. Second circuit; 605. Second hole structure; 606. First surface; 607. Second surface; 608. Second surface circuit

[0038] 70. Welding gold wire;

[0039] 80. Equipment body. DETAILED DESCRIPTION

[0040] The specific implementation methods of the present application are further described in detail below in conjunction with the diagrams and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0041] See also Figure 1 and Figure 2 In the prior art, the existing connection assembly 10 of the neural electrical stimulation device is separate. During assembly, the corresponding number of channel connection blocks is selected according to the number of channel connection blocks required. For example, if 4 channels are required, 4 channel connection blocks are selected for assembly. The channel connection block is composed of at least a spring coil 101, an insulating ring 102 and a metal ring 103. The metal ring 103 and the spring coil 101 are in contact for conduction. The channel connection block of the neural electrical stimulation device is connected to the main board by a feedthrough lead 104.

[0042] See also Figure 2 In the prior art, a spring coil 101, an insulating ring 102 and a metal ring 103 constitute a channel connection block, and the plug-in end 30 of the electrode wire is installed into the channel connection block. The multiple contacts on the plug-in end 30 are respectively in contact with the spring coil 101 to achieve electrical connection, and continue to connect the metal ring 103 in contact with the spring coil 101 and other circuits electrically connected to the metal ring 103, and finally achieve electrical connection between the circuit in the neural electrical stimulation device and the neural electrical stimulation electrode. Multiple alternating insulating rings 102 and metal rings 103 are assembled into a channel connection block, which makes the channel connection block larger in size, causing greater trauma to the patient, and is inconvenient to produce and assemble, resulting in assembly errors, leading to poor product consistency.

[0043] In addition, in practical applications, the feedthrough lead 104 needs to be bent in order to be welded with the metal ring 103 in the channel connection block. In order to ensure the bending strength of the feedthrough lead 104, sufficient space needs to be provided for the feedthrough lead 104, and the channel connection block also needs to have sufficient volume for easy welding. This results in a problem that the channel connection block is large in volume and welding is not easy to operate.

[0044] join Figure 3 In order to solve the above technical problems, an embodiment of the present application provides a connection module 20 of a neural electrical stimulation device, which is used to electrically connect to the electrode wire. One end of the electrode wire is connected to the neural electrical stimulation device through the connection module 20, and the other end of the electrode wire is connected to the electrode.

[0045] The connection module 20 may include: a first insulating body 201, the first insulating body 201 having a first outer surface 202 and a connection channel 203, the connection channel 203 being used to install the plug-in end 30 of the electrode wire, a plurality of first electrical connection contacts 204 being arranged in the connection channel 203, the first electrical connection contacts 204 being used to be electrically connected to the plug-in contacts 301 of the electrode wire; the connection module 20 also includes: a plurality of second electrical connection contacts 205 and a plurality of first circuits 206; each of the second electrical connection contacts 205 is arranged on the first outer surface 202, and is electrically connected to the first electrical connection contacts 204 through the first circuits 206 respectively.

[0046] It should be noted that in Figure 3 In the figure, for the convenience of illustration, only one of the first electrical connection contact 204, the second electrical connection contact 205 and the first circuit 206 is shown. Figure 3 It is only a schematic diagram, and the number of components therein does not limit the scope of the present application. In other embodiments, the number of the first electrical connection contacts 204, the second electrical connection contacts 205 and the first circuit 206 can be more respectively.

[0047] Among them, in the present application, the electrical connection contact only refers to the electrical contact position for realizing electrical connection, and is not limited to a specific point-shaped structure. For example, a protrusion structure can be additionally provided on the first outer surface 202, and the protrusion structure is electrically connected to the first circuit 206. The protrusion structure can be welded to the wire to realize electrical connection. At this time, the protrusion structure can serve as the second electrical connection contact 205. Alternatively, no additional protrusion structure is provided, but the first circuit 206 is further extended or expanded by a part, and the part can be welded or overlapped with the conductor to realize electrical connection. Then the extension part or expansion part can serve as the second electrical connection contact 205. Alternatively, the first circuit 206 is extended by a part in the connection channel 203, and the part can be directly contacted with multiple contacts on the electrode wire plug-in end 30 or indirectly contacted through an intermediate conductive component (such as a metal spring coil 208) to realize electrical connection. Then the extension part of the first circuit 206 in the connection channel 203 can serve as the first electrical connection contact 204.

[0048] Therefore, the first electrical connection contact 204, the first circuit 206 and the second electrical connection contact 205 are arranged on the first insulating body 201, replacing the structure of the insulating ring 102 and the metal ring 103 alternating with each other in the prior art, and realizing the function of electrical connection with the electrode wire. The connection module 20 in this technical solution has a compact structure, a small volume, less trauma to the patient, and no assembly of the insulating ring 102 and the metal ring 103 is required, which saves working steps, has no assembly errors, and has good product consistency.

[0049] See also Figure 4 In some embodiments, the connection module 20 may further include a plurality of elastic electrical connectors 207, which are disposed inside the connection channel 203 and are arranged in a straight line along the length direction of the connection channel 203. Each of the elastic electrical connectors 207 is electrically connected to one of the first electrical connection contacts 204 and is used to electrically connect to one of the plug contacts 301 of the electrode wire. Thus, the first electrical connection contact 204 is electrically connected to one of the contacts on the plug end 30 of the electrode wire by using the elastic electrical connector 207. The elastic electrical connector 207 is elastic, so that the electrical connection between the first electrical connection contact 204 and one of the contacts on the plug end 30 of the electrode wire is more stable.

[0050] Continue to see Figure 4In some embodiments, the elastic electrical connector 207 may be a metal spring ring 208, which may be a canted coil spring, and a plurality of the metal spring rings 208 are used to be sleeved one by one on a plurality of plug contacts 301 of the plug end 30 of the electrode wire. Thus, the metal spring ring 208 and the plug contacts 301 of the electrode wire can be in an annular contact, and the electrical contact is more stable. At the same time, the metal spring ring 208 sleeves the plug end 30 of the electrode wire, which has a limiting effect on the plug end 30, preventing the plug end 30 from being separated from the connection channel 203, and can enhance the stability of the installation of the plug end 30.

[0051] See also Figure 5 , Figure 6 and Figure 7 In some embodiments, the first insulating body 201 is composed of at least a first insulating component 40 and a second insulating component 50. The material of the first insulating component 40 and / or the second insulating component 50 may include ceramic or plastic; the first insulating component 40 and the second insulating component 50 may include a plurality of arc-shaped grooves 401 arranged in a straight line along the length direction of the connecting channel 203. When the first insulating component 40 and the second insulating component 50 are combined to form the first insulating body 201, at least part of the structure of the metal spring ring 208 is accommodated in the arc-shaped groove 401; the first electrical connection contact 204 is arranged on at least a part of the surface inside the arc-shaped groove 401 that abuts against the metal spring ring 208.

[0052] Among them, when the material of the first insulating component 40 or the second insulating component 50 includes ceramics, the preferred ceramic material is bioceramic or composite bioceramic material and coated bioceramic material, such as a coated bioceramic material formed by using titanium alloy as a matrix and spraying a bioceramic coating on the entire outer surface; when the material of the first insulating component 40 or the second insulating component 50 includes plastic, PEEK material is preferably used. PEEK material has the advantages of high temperature resistance, self-lubrication, easy processing and high mechanical strength, which can facilitate the processing and molding of the first insulating component 40 and the second insulating component 50. At the same time, the higher mechanical strength improves the service life of the neural electrical stimulation device.

[0053] Thus, the split structure is combined into the first insulating body 201, making it easier to manufacture the first insulating body 201. At the same time, it is also convenient to construct the first electrical connection contact 204 and the first circuit 206 on the first insulating body 201, and to assemble the metal spring ring 208 into the first channel. The multiple arc-shaped grooves 401 have a limiting effect on the metal spring ring 208, making the installation and electrical contact of the metal spring ring 208 more stable and reliable.

[0054] Continue to see Figure 5 and Figure 6In some embodiments, the first insulating body 201 may include a plurality of first hole structures 402, the first hole structures 402 connecting the first outer surface 202 and the connecting channel 203, the first circuit 206 includes a first surface circuit 403 disposed on the first outer surface 202 of the first insulating body 201 and a first hole circuit (not shown, the same below) disposed in the first hole structure 402; the first surface circuit 403 electrically connects the second electrical connection contact 205 and the first hole circuit, and the first hole circuit electrically connects the first electrical connection contact 204.

[0055] The first hole circuit may be formed by filling the hole with a conductive material, or by electroplating a conductive layer in the hole.

[0056] Thus, a first surface circuit 403 is constructed on the first insulating body 201, and a first hole structure 402 is set. The first hole structure 402 is used to construct the first hole circuit to achieve the above-mentioned electrical connection. Compared with simply setting a circuit on the surface of the first insulating body 201, the setting of the hole structure can conveniently achieve the electrical connection between the first outer surface 202 and the inner surface of the connecting channel 203. At the same time, the first hole structure 402 has a certain protection and limiting effect on the first hole circuit, thereby preventing the first hole circuit from being damaged, thereby improving the durability of the circuit.

[0057] In some embodiments, the first surface circuit 403, the first hole circuit, the first electrical connection contact 204, and the second electrical connection contact 205 may be conductive films.

[0058] Among them, the conductive film can utilize a coating process, such as electroplating, magnetron sputtering, CVD and other processes to construct a membrane circuit on the first insulating body 201, as the first surface circuit 403, the first hole circuit, the first electrical connection contact 204 and the second electrical connection contact 205. Preferably, the above-mentioned membrane circuit can be formed by electroplating. The electroplating method has low cost, high production capacity, and high bonding strength between the membrane circuit and the first insulating body 201; further preferably, the types of electroplating include gold electroplating or titanium electroplating or a combination of the two.

[0059] Thus, a conductive film can be formed using a variety of coating processes, and the first surface circuit 403, the first hole circuit, the first electrical connection contact 204 and the second electrical connection contact 205 can be constructed using the conductive film, which facilitates large-scale production and improves product consistency.

[0060] The present application also provides a connection device for a neural electrical stimulation device, including a connection module 20 and a Figure 8 and Fig. 9The feedthrough module 60 shown in the figure, the connection module 20 is the connection module 20 provided by any of the above embodiments; the feedthrough module 60 includes a second insulating body 601 and a plurality of third electrical connection contacts 602, a fourth electrical connection contact 603 and a plurality of second circuits 604 arranged on the second insulating body 601, each of the third electrical connection contacts 602 is electrically connected to at least one of the fourth electrical connection contacts 603 through at least one of the second circuits 604; when the connection module 20 and the feedthrough module 60 are electrically connected, each of the third electrical connection contacts 602 is electrically connected to at least one of the second electrical connection contacts 205. Thus, the feedthrough module 60 is used as an intermediate module to realize the electrical connection between the circuit in the neural electrical stimulation device and the connection module 20, so that the electrical connection module 20 is standardized, which is convenient for standardized production.

[0061] In some embodiments, the third electrical connection contact 602 and the second electrical connection contact 205 are electrically connected by gold wire welding.

[0062] Gold wire welding methods such as Fig.10 As shown, the third electrical connection contact 602 and the second electrical connection contact 205 are connected by welding gold wire 70 .

[0063] Therefore, gold wire welding can realize automated production, improve production efficiency, improve the level of production standardization, reduce production costs, and improve product consistency. In addition, the electrical connection method of gold wire welding is more stable and reliable than wire welding.

[0064] Continue to see Figure 8 and Fig. 9 In some embodiments, the second insulating body 601 includes a plurality of second hole structures 605, the second hole structures 605 penetrate the first surface 606 and the second surface 607 of the second insulating body 601, the third electrical connection contact 602 is disposed on the first surface 606 of the second insulating body 601, the fourth electrical connection contact 603 is disposed on the second surface 607 of the second insulating body 601, the second circuit 604 includes a second surface circuit 608 disposed on the first surface 606 of the second insulating body 601 and a second hole circuit (not shown, the same below) disposed in the second hole structure 605, the second surface circuit 608 electrically connects the third electrical connection contact 602 and the second hole circuit, and the second hole circuit electrically connects the fourth electrical connection contact 603.

[0065] The second hole circuit may be formed by filling the hole with a conductive material, or by electroplating a conductive layer in the hole.

[0066] Therefore, compared with simply setting a circuit on the surface of the second insulating body 601, the setting of the second hole structure 605 can conveniently realize the electrical connection between the first surface 606 and the second surface 607. At the same time, the second hole structure 605 has a certain protection and limiting effect on the second hole circuit, avoiding the second hole circuit from being damaged, and improving the durability of the circuit.

[0067] The present application also provides a neural electrical stimulation device, including a device body 80 and a connection module 20 provided in any of the above embodiments; or including a device body 80 and a connection device provided in any of the above embodiments. The neural electrical stimulation device is, for example, a pulse generator.

[0068] Due to the use of the above-mentioned connection module 20, the size of the neural electrical stimulation device is reduced, and at the same time the consistency of the product is improved, and it can be better applied to a large number of patients who need neural electrical stimulation.

[0069] The above is only a preferred implementation mode of the present application and is not intended to limit the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A connection device for a neural electrical stimulation device, characterized in that: The invention comprises a connection module and a feed-through module, wherein the connection module is used to electrically connect with the electrode wire, and the connection module comprises a first insulating body, a plurality of second electrical connection contacts, and a plurality of first circuits; the first insulating body has a first outer surface and a connection channel, the connection channel is used to install the plug-in end of the electrode wire, a plurality of first electrical connection contacts are arranged in the connection channel, and the first electrical connection contacts are used to electrically connect with the plug-in contacts on the plug-in end of the electrode wire; Each of the second electrical connection contacts is disposed on the first outer surface and is electrically connected to the first electrical connection contacts through the first circuit respectively; The feed-through module comprises a second insulating body and a plurality of third electrical connection contacts, a fourth electrical connection contact and a plurality of second circuits arranged on the second insulating body, each of the third electrical connection contacts being electrically connected to at least one of the fourth electrical connection contacts through at least one of the second circuits; When the connection module and the feed-through module are electrically connected, each of the third electrical connection contacts is electrically connected to at least one of the second electrical connection contacts; The second insulating body includes a plurality of second hole structures, the second circuit includes a second surface circuit and a second hole circuit arranged in the second hole structure, the second surface circuit is electrically connected to the third electrical connection contact and the second hole circuit, and the second hole circuit is electrically connected to the fourth electrical connection contact.

2. The connection device according to claim 1, characterized in that: The connection module also includes a plurality of elastic electrical connectors, which are arranged inside the connection channel and arranged in a straight line along the length direction of the connection channel. Each of the elastic electrical connectors is electrically connected to one of the first electrical connection contacts and is used to electrically connect to a plug contact on the plug end of the electrode wire.

3. The connection device according to claim 2, characterized in that: The elastic electrical connector is a metal spring ring, and the metal spring ring is used to be sleeved on a plurality of plug-in contacts at the plug-in end of the electrode wire.

4. The connection device according to claim 3, characterized in that: The first insulating body is composed of at least a first insulating component and a second insulating component, and the material of the first insulating component and / or the second insulating component includes ceramic or plastic; The first insulating component and the second insulating component include a plurality of arc-shaped grooves arranged in a straight line along the length direction of the connecting channel, and when the first insulating component and the second insulating component are combined to form the first insulating body, at least part of the structure of the metal spring ring is accommodated in the arc-shaped groove; The first electrical connection contact is arranged on at least a portion of the surface of the arc-shaped groove that abuts against the metal spring ring.

5. The connection device according to claim 1, characterized in that: The first insulating body comprises a plurality of first hole structures, wherein the first hole structures communicate with the first outer surface and the connecting channel; The first circuit includes a first surface circuit arranged on the first outer surface of the first insulating body and a first hole circuit arranged in the first hole structure; the first surface circuit is electrically connected to the second electrical connection contact and the first hole circuit, and the first hole circuit is electrically connected to the first electrical connection contact.

6. The connection device according to claim 5, characterized in that: The first surface circuit, the first hole circuit, the first electrical connection contact and the second electrical connection contact are conductive films.

7. The connection device according to claim 1, characterized in that: The third electrical connection contact and the second electrical connection contact are electrically connected by gold wire welding.

8. The connection device according to claim 1, characterized in that: The second hole structure passes through the first surface and the second surface of the second insulating body, the third electrical connection contact is arranged on the first surface of the second insulating body, the fourth electrical connection contact is arranged on the second surface of the second insulating body, and the second surface circuit is arranged on the first surface of the second insulating body.

9. A neural electrical stimulation device, comprising a device body and a connecting device according to any one of claims 1 to 8.

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