Electrode wire and manufacturing method thereof

Abstract

The invention discloses an electrode wire and a manufacturing method thereof, the electrode wire comprises a stimulation section, a connection section and a middle section, the stimulation section comprises a plurality of stimulation contacts, a plurality of first guide wires and at least one connection ring, the connection section comprises a plurality of connection contacts, and the middle section comprises a plurality of second guide wires. The first end of the first guide wire is electrically connected with the stimulation contact, the third end of the second guide wire is electrically connected with the connecting contact, and the second end of the first guide wire and the fourth end of the second guide wire are electrically connected into the connecting ring. According to the electrode wire, the stimulation section and the connection section are electrically connected through the connection ring, installation of the first guide wire and the second guide wire is facilitated, the assembly difficulty of the electrode wire can be reduced, the production efficiency of the electrode wire is improved, the production yield of the electrode wire is improved, the production cost of the electrode wire is reduced, and the production efficiency of the electrode wire is improved. Meanwhile, under the condition that the overall size of the electrode wire is not changed, more stimulation contacts can be arranged, and the direction of stimulation signals can be controlled more accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of implantable medical devices, and in particular to an electrode lead and a manufacturing method thereof. Background Art

[0002] Neurostimulation technology is a technology that implants electrode wires into specific areas of the patient's body and uses a pulse generator to apply stimulation signals to specific areas to regulate the function of nerves, muscles or other tissues, helping to treat many different types of diseases.

[0003] In the prior art, the pulse generator can adjust the stimulation parameters such as the frequency, pulse width and voltage of the stimulation signal. In actual clinical practice, there is also a certain demand for the direction of electrode stimulation, because not only the effects of stimulation on different areas are different, but also stimulation in different directions in the same area has different effects. The stimulation contacts of the stimulation segment of the existing electrode wire are annular, and the stimulation direction cannot be controlled, making it difficult to achieve precise stimulation and unable to obtain optimal regulation. Therefore, it is necessary to change at least part of the annular stimulation contacts into sheet-like stimulation contacts, which leads to a sharp increase in the number of stimulation contacts, and the stimulation contacts need to be connected to the connecting contacts of the connecting segment through guide wires. In the prior art, when the guide wire of the stimulation segment is welded to the inner side of the stimulation contact, the stimulation contact and the guide wire of the stimulation segment need to be tilted outwards to facilitate welding the guide wire to the inner side of the stimulation contact, the stimulation contact and the guide wire of the stimulation segment need to be peeled off from the outer peripheral surface of the stimulation segment, and the stimulation contact and the guide wire of the stimulation segment need to be tilted outwards to facilitate welding the guide wire to the inner side of the stimulation contact. Since the guide wire of the middle segment is wrapped in the sleeve, the guide wire cannot be pulled, resulting in the inability to control the length of the guide wire of the stimulation segment, thereby affecting the accuracy of the stimulation contact in the stimulation segment. When the guide wire of the stimulation segment is welded to the outer side of the stimulation contact, the welding point needs to be polished and other treatments, which makes the assembly of the electrode wire difficult, resulting in low production efficiency and high production cost of the electrode wire.

[0004] Therefore, existing electrode leads need to be improved. Summary of the invention

[0005] The object of the present invention is to provide an electrode wire and a method for manufacturing the same, which can not only improve the accuracy of the stimulation contact position, but also reduce the difficulty of assembling the electrode wire, thereby improving the production efficiency of the electrode wire and improving the production yield of the electrode wire, thereby reducing the production cost of the electrode wire.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] An electrode lead comprises a stimulation segment for providing electrical stimulation, a connection segment electrically connected to a stimulator or an extension lead, and an intermediate segment connecting the stimulation segment and the connection segment, wherein the stimulation segment comprises a plurality of stimulation contacts, a plurality of first guide wires and at least one connection ring, the connection segment comprises a plurality of connection contacts, and the intermediate segment comprises a plurality of second guide wires;

[0008] The first end of the first guide wire is electrically connected to the stimulation contact, the third end of the second guide wire is electrically connected to the connection contact, and the second end of the first guide wire and the fourth end of the second guide wire are electrically connected in the connection ring.

[0009] Preferably, the connecting ring is provided with one or more wire passing holes passing through the connecting ring, the wire passing holes extend along the axial direction of the connecting ring, and the second end of at least one of the first guide wires and the fourth end of at least one of the second guide wires are located in the wire passing holes.

[0010] Preferably, a connecting hole is provided on the side of the connecting ring, the connecting hole is connected to the wire passing hole, the first guide wire and the second guide wire are exposed in the connecting hole, and the first guide wire and the second guide wire can be welded or bonded through the connecting hole.

[0011] Preferably, the connection holes and the wire holes are arranged in one-to-one correspondence; or,

[0012] A plurality of the connection holes are connected to one wire passing hole.

[0013] Preferably, when there are multiple wire-passing holes on one of the connecting rings, the multiple wire-passing holes are arranged at intervals;

[0014] When there are multiple connection holes on a connection ring, the multiple connection holes are distributed in one or more of the following ways: circumferential distribution of the connection ring, axial distribution of the connection ring, and staggered distribution.

[0015] Preferably, the stimulation segment further comprises a central support, and a mounting position for mounting the stimulation contact is provided on the central support.

[0016] Preferably, a positioning shaft is provided at one end of the central bracket facing the middle section, a positioning hole penetrating the connecting ring is provided on the connecting ring, the positioning hole extends along the axial direction of the connecting ring, and the positioning shaft is provided in the positioning hole.

[0017] Preferably, the connecting ring is an integrated structure or a split structure. When the connecting ring is a split structure, the connecting ring is composed of a plurality of spliced ​​structures, and the second end of at least one of the first guide wires and the fourth end of at least one of the second guide wires are electrically connected in one of the spliced ​​structures.

[0018] Preferably, it further comprises a connecting portion, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected to the connecting portion respectively, and the connecting portion is arranged in the wire passing hole of the connecting ring.

[0019] Preferably, the number of the connecting parts is one or more. When the number of the connecting parts is plural, the connecting parts are distributed along the circumferential direction of the electrode wire or are staggered.

[0020] Preferably, the connecting ring is made of insulating material.

[0021] A method for manufacturing an electrode wire, comprising:

[0022] After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support;

[0023] The second end of the first guide wire is inserted into the wire hole of the connecting ring, and the fourth end of the second guide wire is correspondingly inserted into the wire hole of the connecting ring, and the first guide wire and the second guide wire are welded or bonded through the connecting hole of the connecting ring.

[0024] Preferably, after welding the first guide wire and the second guide wire, the method further comprises: grinding the welding position of the first guide wire and the second guide wire to make the surface of the connecting ring flat and smooth; or,

[0025] Adhesive is applied to the welding position of the first guide wire and the second guide wire to make the surface of the connecting ring flat and smooth.

[0026] A method for manufacturing an electrode wire, comprising:

[0027] After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support;

[0028] After one of the first guide wire and the second guide wire passes through the connecting ring through the wire hole of the connecting ring, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected, and then the second end of the first guide wire and the fourth end of the second guide wire are pulled into the wire hole of the connecting ring.

[0029] A method for manufacturing an electrode wire, comprising:

[0030] After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support;

[0031] After one of the first guide wire and the second guide wire passes through the connecting ring through the wire hole of the connecting ring, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected to the connecting part respectively, and then the connecting part is pulled into the wire hole of the connecting ring.

[0032] Preferably, after the stimulation contact is mounted on the central support, the method further comprises: inserting the positioning shaft of the central support into the positioning hole of the connecting ring.

[0033] Preferably, after the stimulation contact is installed on the central support, it also includes: pouring a filler, wherein the filler is used to fill the gap between the stimulation contact, the first guide wire and the central support, and the material of the filler is an insulating material.

[0034] Compared with the prior art, the beneficial effects of the present invention include at least:

[0035] The electrode wire and the manufacturing method thereof of the present invention, by providing the first guide wire and the second guide wire, can not only accurately control the length of the first guide wire, improve the accuracy of the position of the stimulation contact, ensure more accurate electrical stimulation of the patient's affected part, thereby improving the treatment effect, but also the first guide wire can be welded to the inner side of the stimulation contact. Compared with welding the first guide wire to the outer side of the stimulation contact, there is no need to perform grinding or other treatment methods on the welding point to reduce the convexity of the welding point, thereby ensuring the smoothness of the outer surface of the stimulation segment, avoiding the stimulation segment from scratching the patient, reducing damage to the patient, and at the same time can reduce the difficulty of assembling the electrode wire, thereby improving the production efficiency of the electrode wire and improving the production yield of the electrode wire, thereby reducing the production cost of the electrode wire. The first guide wire and the second guide wire are then electrically connected through a connecting ring, which not only realizes the electrical connection between the stimulation segment and the connecting segment, but also avoids short circuit between adjacent first guide wires, and facilitates the installation of the first guide wire and the second guide wire, which can reduce the difficulty of assembling the electrode wire, thereby improving the production efficiency and production yield of the electrode wire, thereby reducing the production cost of the electrode wire. At the same time, more stimulation contacts can be set while keeping the overall volume of the electrode wire unchanged. In this way, more stimulation contacts facing different directions can be set in the same area, which can more accurately control the direction of the stimulation signal, ensuring more accurate electrical stimulation of the patient's affected area, thereby improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the electrode wire according to an embodiment of the present invention.

[0037] Figure 2 Schematic diagram of an exploded view of an electrode lead according to an embodiment of the present invention.

[0038] Figure 3 yes Figure 2A local enlarged schematic diagram of point A in the middle.

[0039] Figure 4 yes Figure 2 A local enlarged schematic diagram of point B in the middle.

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of the first guide wire and the second guide wire located in the connecting ring before welding in an embodiment of the present invention.

[0041] Figure 6 It is a schematic diagram of the planar structure of the first guide wire and the second guide wire located in the connecting ring before welding in an embodiment of the present invention.

[0042] Figure 7 It is a schematic diagram of the three-dimensional structure after the first guide wire and the second guide wire located in the connecting ring are welded in an embodiment of the present invention.

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure when the connecting ring in the embodiment of the present invention is provided with a connecting hole.

[0044] Fig. 9 It is a schematic diagram of the three-dimensional structure when the connecting ring in the embodiment of the present invention is not provided with a connecting hole.

[0045] Fig.10 It is a flow chart of a first method for manufacturing an electrode lead according to an embodiment of the present invention.

[0046] Fig.11 It is a flow chart of a second method for manufacturing an electrode lead according to an embodiment of the present invention.

[0047] Fig.12 4 is a flow chart of a third method for manufacturing an electrode lead according to an embodiment of the present invention.

[0048] In the figure: 100, electrode wire; 1, stimulation segment; 11, stimulation contact; 12, first guide wire; 121, first end; 122, second end; 13, connecting ring; 131, wire hole; 132, connecting hole; 133, positioning hole; 14, center bracket; 141, mounting position; 142, positioning axis; 15, plug; 2, connecting segment; 21, connecting contact; 22, insulating ring; 23, locking ring; 3, middle segment; 31, second guide wire; 311, third end; 312, fourth end; 32, outer sleeve; 33, inner sleeve; 331, opening. DETAILED DESCRIPTION

[0049] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0050] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0051] Reference Figures 1 to 9 The present invention provides an electrode wire 100, which is used to electrically connect a stimulator (not shown) and a stimulation contact 11. The stimulator can be a pulse generator, which transmits a stimulation signal to the stimulation contact 11 through the electrode wire 100, and the stimulation contact 11 can electrically stimulate the patient's affected area.

[0052] Reference Figure 1 , Figure 2 The electrode lead 100 may include a stimulation segment 1 for providing electrical stimulation to the patient's affected part, a connection segment 2 electrically connected to the stimulator, and an intermediate segment 3 connecting the stimulation segment 1 and the connection segment 2. In some embodiments, the connection segment 2 may be electrically connected to the stimulator through an extension wire (not shown). The stimulation segment 1 and the connection segment 2 may be respectively arranged at both ends of the intermediate segment 3, that is, the intermediate segment 3 serves to connect the stimulation segment 1 and the connection segment 2. The intermediate segment 3 is used to transmit the stimulation signal of the connection segment 2 to the stimulation segment 1, and the stimulation segment 1 performs electrical stimulation on the patient's affected part.

[0053] Specifically, refer to Figure 3 , the stimulation segment 1 may include a plurality of stimulation contacts 11, a plurality of first guide wires 12 and at least one connecting ring 13, that is, the stimulation segment 1 is provided with one or more stimulation contacts 11, one or more first guide wires 12, and one or more connecting rings 13. The stimulation contacts 11 are exposed to the outer surface of the stimulation segment 1 to ensure that the stimulation contacts 11 can have good contact with the affected part of the patient, thereby ensuring that the stimulation contacts 11 can electrically stimulate the affected part of the patient. As an example, the stimulation segment 1 is provided with a plurality of stimulation contacts 11, a plurality of first guide wires 12 and a connecting ring 13, and the number of stimulation contacts 11 is preferably equal to the number of first guide wires 12, and more preferably, the stimulation contacts 11 are arranged one by one with the first guide wires 12. The plurality of stimulation contacts 11 are arranged at intervals from each other to avoid mutual interference between the stimulation contacts 11, thereby ensuring the accuracy of electrical stimulation by the stimulation contacts 11, thereby improving the treatment effect.

[0054] The stimulation contacts 11 of the stimulation segment 1 can be in one or more of the form of a sheet or a ring, and can be arranged according to actual needs. In the present embodiment, some of the stimulation contacts 11 can be in the form of a sheet, and some of the stimulation contacts 11 can be in the form of a ring. When the stimulation contacts 11 are in the form of a sheet, the distribution of the plurality of stimulation contacts 11 can be arranged along the circumference of the stimulation segment 1, that is, a plurality of sheet-shaped stimulation electrodes can be arranged in the circumference of the same area of ​​the stimulation segment 1, and the plurality of sheet-shaped stimulation electrodes can be arranged in different directions. The plurality of sheet-shaped stimulation electrodes can more accurately control the direction of the stimulation signal, ensuring more accurate electrical stimulation of the patient's affected area, thereby improving the treatment effect.

[0055] The stimulation segment 1 may also include a central support 14, which may be made of an insulating material, and may be provided with a mounting position 141 for mounting the stimulation contact 11. The central support 14 may not only provide support for the stimulation contact 11, but also preferably have a plurality of mounting positions 141, and the plurality of mounting positions 141 are spaced apart from each other, so that the plurality of stimulation contacts 11 mounted on the mounting positions 141 are spaced apart from each other, thereby avoiding mutual interference between the plurality of stimulation contacts 11, thereby ensuring the accuracy of the electrical stimulation by the stimulation contact 11, and thus improving the treatment effect. The shape of the mounting position 141 may match the shape of the stimulation contact 11, and the mounting position 141 may be used to mount a sheet-shaped stimulation contact 11, and the mounting position 141 may also match the shape of the annular stimulation contact 11, and the mounting position 141 may be used to mount an annular stimulation contact 11.

[0056] The stimulation segment 1 may further include a plug 15, which may be disposed at one end of the stimulation segment 1 away from the middle segment 3, and the end of the plug 15 facing the patient may be a rounded end surface, such as a hemispherical convex head. The plug 15 may not only block the stimulation segment 1 to prevent the patient's tissue fluid from entering the interior of the stimulation segment 1, but also reduce damage to human tissue when the electrode wire 100 is implanted.

[0057] Reference Figure 4 , the connecting section 2 may include a plurality of connecting contacts 21, that is, the connecting section 2 is provided with one or more connecting contacts 21. In this embodiment, the connecting section 2 may be provided with a plurality of connecting contacts 21, and the stimulator may provide a plurality of stimulation signals through the plurality of connecting contacts 21, and the plurality of connecting contacts 21 are spaced apart from each other to avoid mutual interference between the connecting contacts 21, thereby avoiding mutual interference between the stimulation signals of the stimulator.

[0058] The connection contact 21 of the connection section 2 can be in one or more of a sheet or ring shape, and can be set according to actual needs. In this embodiment, the connection contact 21 of the connection section 2 is ring-shaped. The connection section 2 can also include a plurality of insulating rings 22 and a locking ring 23, that is, the connection section 2 is provided with one or more insulating rings 22. In this embodiment, the number of insulating rings 22 is multiple, and the insulating rings 22 and the connection contacts 21 are spaced apart so that the multiple connection contacts 21 are spaced apart, which can ensure that the connection contacts 21 are mutually insulated.

[0059] Reference Figure 2 , the middle section 3 may include a plurality of second guide wires 31, that is, the middle section 3 includes one or more second guide wires 31. In this embodiment, the middle section 3 includes a plurality of second guide wires 31. More preferably, the number of the second guide wires 31 is equal to the number of the first guide wires 12, the second guide wires 31 and the first guide wires 12 can be electrically connected one by one, and the number of the stimulation contacts 11 and the number of the connection contacts 21 can also be equal, that is, the connection contacts 21, the second guide wires 31, the first guide wires 12 and the stimulation contacts 11 are electrically connected one by one in sequence.

[0060] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 The middle section 3 may also include an outer sleeve 32 sleeved on the second guide wire 31. The outer sleeve 32 may be a hollow cylindrical shape. The locking ring 23 may be provided at one end of the connecting section 2 close to the middle section 3. The two ends of the locking ring 23 may be connected to the outer sleeve 32 and the insulating ring 22 respectively. The locking ring 23 may not only connect the middle section 3 with the connecting section 2, but also form a sealed state at the junction of the middle section 3 and the connecting section 2 to prevent the patient's tissue fluid from entering the interior of the electrode wire 100. The outer sleeve 32 is preferably made of silicone rubber or polyurethane, and may also be made of other materials.

[0061] Reference Figure 3 , Figure 4 The middle section 3 may further include an inner sleeve 33, which may be in a hollow cylindrical shape as a whole, and may be sleeved outside the second guide wire 31, and may be disposed between the second guide wire 31 and the outer sleeve 32. An opening 331 may be disposed on the side of the inner sleeve 33, and the opening 331 may extend along the axial direction of the inner sleeve 33, and the second guide wire 31 may enter the inner sleeve 33 through the opening 331. The inner sleeve 33 not only protects the second guide wire 31, but also facilitates the insertion of the second guide wire 31 into the outer sleeve 32.

[0062] Reference Figure 5 , Figure 6 , Figure 7, the first end 121 of the first guide wire 12 can be electrically connected to the stimulation contact 11, the third end 311 of the second guide wire 31 can be electrically connected to the connection contact 21, and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are electrically connected and arranged on the connecting ring 13. The material of the connecting ring 13 is an insulating material, such as ceramic, insulating resin, etc., so that the connecting ring 13 can ensure that the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 is insulated from the outside. The number of the connecting ring 13 can be one or more, and can be set according to actual needs.

[0063] The connecting ring 13 can be an integrated structure or a split structure. Figure 8 , Fig. 9 When the connecting ring 13 is an integrated structure, the number of the connecting ring 13 can be one, and one connecting ring 13 can connect one or more first guide wires 12 and one or more second guide wires 31. The number of the connecting ring 13 can also be multiple, and the multiple connecting rings 13 are independent of each other.

[0064] When the connecting ring 13 is a split structure, the connecting ring 13 can be composed of multiple splicing structures (not shown), at least the second end 122 of the first guide wire 12 and at least the fourth end 312 of the second guide wire 31 are electrically connected in one splicing structure, and multiple splicing structures can connect multiple first guide wires 12 and multiple second guide wires 31.

[0065] The electrode wire 100 may further include a connecting portion (not shown), and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be electrically connected to the connecting portion, respectively, and the connecting portion may be arranged in the wire hole 131 of the connecting ring 13. When one of the first guide wire 12 and the second guide wire 31 passes through the connecting ring 13 through the wire hole 131, the connecting portion is preferably made of metal, and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be electrically connected to the connecting portion by crimping or welding, and then the second end 122 of the first guide wire 12, the fourth end 312 of the second guide wire 31 and the connecting portion are pulled into the wire hole 131, and the connecting portion is, for example, a cold-pressed tube. The welding method is, for example, resistance welding, laser welding, etc. In some embodiments, the connecting portion may also be made of non-metallic material, and the connecting portion may crimp the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 together.

[0066] The number of the connection parts may be one or more. When the number of the connection parts is multiple, the multiple connection parts may be respectively arranged in one-to-one correspondence with the multiple wire holes 131. The distribution of the multiple connection parts may be along the circumference of the electrode wire 100 or the multiple connection parts may be staggered, for example, the multiple connection parts are spirally distributed. The multiple connection parts are staggered, which can increase the welding space and improve the welding efficiency. In some embodiments, the multiple connection parts may also be arranged in one wire hole 131.

[0067] In the present application, by setting the first guide wire 12 and the second guide wire 31, not only can the length of the first guide wire 12 be accurately controlled, the accuracy of the position of the stimulation contact 11 is improved, and more accurate electrical stimulation is ensured to the patient's affected part, thereby improving the treatment effect, but also the first guide wire 12 can be welded to the inner side of the stimulation contact 11. Compared with welding the first guide wire 12 to the outer side of the stimulation contact 11, there is no need to perform grinding or other treatment methods on the welding point to reduce the convexity of the welding point, thereby ensuring the smoothness of the outer surface of the stimulation segment 1, avoiding the stimulation segment 1 from scratching the patient, reducing damage to the patient, and at the same time reducing the difficulty of assembling the electrode wire 100, thereby improving the production efficiency of the electrode wire 100 and improving the production yield of the electrode wire 100, thereby reducing the production cost of the electrode wire 100. The first guide wire 12 and the second guide wire 31 are then electrically connected through the connecting ring 13, which not only realizes the electrical connection between the stimulation segment 1 and the connecting segment 2, but also avoids the short circuit between adjacent first guide wires 12 and the short circuit between adjacent second guide wires 31, and facilitates the installation of the first guide wire 12 and the second guide wire 31, which can reduce the difficulty of assembling the electrode wire 100, thereby improving the production efficiency of the electrode wire 100 and the production yield of the electrode wire 100, thereby reducing the production cost of the electrode wire 100. At the same time, when the overall volume of the electrode wire 100 remains unchanged, more stimulation contacts 11 can be set, so that more stimulation contacts 11 facing different directions can be set in the same area, which can more accurately control the direction of the stimulation signal, ensure more accurate electrical stimulation of the patient's affected area, and thus improve the treatment effect.

[0068] In a specific embodiment, referring to Figure 5 , Figure 7 , Figure 8 , Fig. 9 The connecting ring 13 may be provided with one or more wire holes 131 passing through the connecting ring 13 , and the wire holes 131 may extend along the axial direction of the connecting ring 13 , and the second end 122 of at least one first guide wire 12 and the fourth end 312 of at least one second guide wire 31 may be located in the wire holes 131 .

[0069] When a wire hole 131 is provided on the connecting ring 13, a first guide wire 12 and a second guide wire 31 can be provided in the wire hole 131, and multiple first guide wires 12 and multiple second guide wires 31 can also be provided in the wire hole 131. The multiple first guide wires 12 and multiple second guide wires 31 are preferably electrically connected one by one. In this embodiment, a first guide wire 12 and a second guide wire 31 are provided in the wire hole 131.

[0070] When a plurality of wire holes 131 are provided on the connecting ring 13, a first wire guide 12 and a second wire guide 31 may be provided in a wire hole 131, and a plurality of first wire guides 12 and a plurality of second wire guides 31 may also be provided in a wire hole 131, and the plurality of first wire guides 12 and the plurality of second wire guides 31 are preferably electrically connected in a one-to-one correspondence. In the present embodiment, a first wire guide 12 and a second wire guide 31 are provided in a wire hole 131, that is, the number of wire holes 131, the first wire guide 12 and the second wire guide 31 is the same, and the wire holes 131, the first wire guide 12 and the second wire guide 31 are provided in a one-to-one correspondence.

[0071] In some embodiments, after one of the first guide wire 12 and the second guide wire 31 passes through the connecting ring 13 through the wire hole 131, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be electrically connected. For example, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be electrically connected by welding, crimping, etc., and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are pulled into the wire hole 131, that is, the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 is pulled into the wire hole 131. In this way, not only the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be protected, but also the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be insulated and isolated from the outside. Fig. 9 In this embodiment, there is no need to set the connecting hole 132, which simplifies the production process of the connecting ring 13 and facilitates the production of the connecting ring 13.

[0072] As a preferred method, refer to Figure 5 , Figure 6 , Figure 7 , Figure 8The side of the connecting ring 13 may be provided with a connecting hole 132, and the connecting hole 132 may be connected to the wire hole 131. The first guide wire 12 and the second guide wire 31 may be exposed in the connecting hole 132, and the first guide wire 12 and the second guide wire 31 may be welded or bonded through the wire hole 131. For example, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be respectively inserted into the wire hole 131, and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be respectively exposed in the connecting hole 132, and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be welded by welding, so that the first guide wire 12 and the second guide wire 31 are electrically connected, thereby realizing the electrical connection between the stimulation segment 1 and the connecting segment 2. The second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be exposed in the connection hole 132, respectively, so that the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are easily welded, which can reduce the assembly difficulty of the electrode wire 100, thereby improving the production efficiency of the electrode wire 100 and the production yield of the electrode wire 100, thereby reducing the production cost of the electrode wire 100. In some embodiments, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can also be bonded by conductive glue.

[0073] The connection holes 132 can be arranged in a one-to-one correspondence with the wire holes 131, that is, the number of the connection holes 132 is the same as the number of the wire holes 131, and one wire hole 131 is connected to one connection hole 132. Figure 5 , Figure 7 , Figure 8 , Fig. 9 When nine wire passing holes 131 are set on a connecting ring 13, nine connecting holes 132 are set on a connecting ring 13, and the nine connecting holes 132 are set in a one-to-one correspondence with the nine wire passing holes 131. A first guide wire 12 and a second guide wire 31 can be set in each of the nine wire passing holes 131. A first guide wire 12 can be electrically connected to a stimulation contact 11, and a second guide wire 31 can be electrically connected to a connection contact 21, so that the nine connection contacts 21 of the connecting segment 2 are respectively electrically connected to the nine stimulation contacts 11 of the stimulation segment 1.

[0074] Reference Figure 5 , Figure 7 , Figure 8 , Fig. 9 When there are multiple wire holes 131 on a connecting ring 13, the multiple wire holes 131 can be arranged at intervals, so as to ensure that the connection between the second end 122 of the adjacent first guide wire 12 and the fourth end 312 of the second guide wire 31 is insulated from each other. The distribution of the wire holes 131 can be distributed along the circumference of the connecting ring 13.

[0075] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 When there are multiple connecting holes 132 on a connecting ring 13, the distribution of the multiple connecting holes 132 can be one or more of circumferential distribution along the connecting ring 13, axial distribution along the connecting ring 13, and staggered distribution. For example, the multiple connecting holes 132 can be distributed in a spiral shape.

[0076] In some embodiments, multiple connecting holes 132 may also be connected to a wire passing hole 131, and multiple first guide wires 12 and multiple second guide wires 31 may be arranged in a wire passing hole 131. The second end 122 of a first guide wire 12 and the fourth end 312 of a second guide wire 31 may be exposed in a connecting hole 132, and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be welded by welding, or the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 may be bonded by a conductive adhesive (not shown), and the conductive adhesive is preferably flush with the surface of the connecting ring 13.

[0077] As a preferred method, refer to Figure 7 After the first guide wire 12 and the second guide wire 31 are welded through the wire hole 131, the welding part of the first guide wire 12 and the second guide wire 31 can be polished to make the surface of the welding part of the first guide wire 12 and the second guide wire 31 flat and smooth, so that the surface of the connecting ring 13 is flat and smooth. In particular, when the welding part of the first guide wire 12 and the second guide wire 31 protrudes from the connecting hole 132, the welding part of the first guide wire 12 and the second guide wire 31 can be polished to be flush with the surface of the connecting ring 13.

[0078] Reference Figure 7 After the first guide wire 12 and the second guide wire 31 are welded through the wire hole 131, an adhesive (not shown) may also be provided at the welding point between the first guide wire 12 and the second guide wire 31 to make the surface of the connecting ring 13 flat and smooth. In particular, when the welding point between the first guide wire 12 and the second guide wire 31 is recessed in the connecting hole 132, the adhesive may fill the connecting hole 132 and make it flush with the surface of the connecting ring 13. The material of the adhesive is preferably an insulating material, so that the adhesive can ensure that the welding point between the first guide wire 12 and the second guide wire 31 is insulated from the outside.

[0079] In a specific embodiment, referring to Figure 3, a positioning shaft 142 may be provided at one end of the center bracket 14 facing the middle section 3, a positioning hole 133 penetrating the connecting ring 13 may be provided on the connecting ring 13, the positioning hole 133 may extend along the axial direction of the connecting ring 13, and the positioning shaft 142 may be provided in the positioning hole 133. That is, the positioning shaft 142 may be inserted into the positioning hole 133, so that the center bracket 14 and the connecting ring 13 are connected to each other and form axial positioning, which can prevent the center bracket 14 and the connecting ring 13 from rotating with each other, thereby facilitating the insertion of the first guide wire 12 and the second guide wire 31 into the wire hole 131, and can also prevent the first guide wire 12 and the second guide wire 31 from being misaligned and unable to be welded due to the mutual rotation between the center bracket 14 and the connecting ring 13, and can also prevent the first guide wire 12 and the second guide wire 31 that have been welded from being broken due to the mutual rotation between the center bracket 14 and the connecting ring 13. The shape of the positioning shaft 142 may be cylindrical, prismatic, etc., and the shape of the positioning hole 133 is matched with the shape of the positioning shaft 142. In this embodiment, the positioning shaft 142 may be cylindrical, and the shape of the positioning hole 133 is cylindrical matching the shape of the positioning shaft 142 .

[0080] The stimulation segment 1 may be provided with a filler (not shown), which is used to fill the gaps between the stimulation contact 11, the first guide wire 12 and the central support 14. The filler can make the stimulation contact 11, the first guide wire 12 and the central support 14 more tightly connected, and prevent the stimulation contact 11, the first guide wire 12 and the central support 14 from being separated from each other. The filler may be made of an insulating material, such as polyurethane or epoxy resin.

[0081] Reference Fig.10 The present invention also provides a method for manufacturing an electrode wire, comprising: steps S101-S102.

[0082] Step S101 : After electrically connecting the first end 121 of the first guide wire 12 to the stimulation contact 11 , the stimulation contact 11 is mounted on the central support 14 .

[0083] Specifically, the first end 121 of the first guide wire 12 can be electrically connected to the stimulation contact 11 by welding, and then the stimulation contact 11 is installed on the central bracket 14, and the first guide wire 12 is also installed on the central bracket 14. All the first guide wires 12 and all the stimulation contacts 11 can be correspondingly welded first, and then the stimulation contact 11 is installed on the central bracket 14. It is also possible to weld a first guide wire 12 and a stimulation contact 11, and then install the stimulation contact 11 on the central bracket 14, and then weld the next first guide wire 12 and the next stimulation contact 11, and repeat this cycle.

[0084] As a preferred method, after the stimulation contact 11 is installed on the central bracket 14, it can also include: inserting the positioning shaft 142 of the central bracket 14 into the positioning hole 133 of the connecting ring 13, so that the central bracket 14 and the connecting ring 13 are connected to each other and form an axial positioning, which can prevent the central bracket 14 and the connecting ring 13 from rotating relative to each other, thereby facilitating the insertion of the first guide wire 12 and the second guide wire 31 into the wire hole 131, and can also prevent the first guide wire 12 and the second guide wire 31 from being misaligned and unable to be welded due to the mutual rotation between the central bracket 14 and the connecting ring 13, and can also prevent the first guide wire 12 and the second guide wire 31 that have been welded from being broken due to the mutual rotation between the central bracket 14 and the connecting ring 13.

[0085] After the stimulation contact 11 is mounted on the central support 14, the method may further include: injecting a filler, the filler is used to fill the gap between the stimulation contact 11, the first guide wire 12 and the central support 14, the filler can make the stimulation contact 11, the first guide wire 12 and the central support 14 more tightly connected, and prevent the stimulation contact 11, the first guide wire 12 and the central support 14 from being separated from each other. The filler is made of an insulating material, such as polyurethane or epoxy resin.

[0086] Step S102: insert the second end 122 of the first guide wire 12 into the wire hole 131 of the connecting ring 13, and insert the fourth end 312 of the second guide wire 31 into the wire hole 131 of the connecting ring 13 accordingly, and weld or bond the first guide wire 12 and the second guide wire 31 through the connecting hole 132 of the connecting ring 13.

[0087] Specifically, after the stimulation contact 11 is mounted on the central bracket 14, the second end 122 of the first guide wire 12 is inserted into the wire hole 131 of the connecting ring 13, and the fourth end 312 of the second guide wire 31 is correspondingly inserted into the wire hole 131 of the connecting ring 13, and the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be respectively exposed in the connecting hole 132, and the first guide wire 12 and the second guide wire 31 can be welded through the connecting hole 132 of the connecting ring 13. After all the first guide wires 12 and all the second guide wires 31 are respectively inserted into the wire hole 131, the first guide wire 12 and the second guide wire 31 can be respectively welded through the connecting hole 132 of the connecting ring 13. Alternatively, after a first guide wire 12 and a second guide wire 31 are inserted into the wire hole 131, the first guide wire 12 and the second guide wire 31 are welded through the connection hole 132 of the connection ring 13, and then the next first guide wire 12 and the next second guide wire 31 are inserted into the wire hole 131, and the cycle is repeated. In some embodiments, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can also be bonded by conductive adhesive.

[0088] As a preferred embodiment, after welding the first guide wire 12 and the second guide wire 31, the method may further include: grinding the welding part of the first guide wire 12 and the second guide wire 31 to make the surface of the welding part of the first guide wire 12 and the second guide wire 31 flat and smooth, thereby making the surface of the connecting ring 13 flat and smooth. In particular, when the welding part of the first guide wire 12 and the second guide wire 31 protrudes from the connecting hole 132, the welding part of the first guide wire 12 and the second guide wire 31 can be ground to be flush with the surface of the connecting ring 13.

[0089] In some embodiments, after welding the first guide wire 12 and the second guide wire 31, the method may further include: applying an adhesive to the welding point between the first guide wire 12 and the second guide wire 31 to make the surface of the connecting ring 13 flat and smooth. In particular, when the welding point between the first guide wire 12 and the second guide wire 31 is recessed in the connecting hole 132, the adhesive can fill the connecting hole 132 and make it flush with the surface of the connecting ring 13. The material of the adhesive is preferably an insulating material, so that the adhesive can ensure that the welding point between the first guide wire 12 and the second guide wire 31 is insulated from the outside.

[0090] The manufacturing method of the electrode wire may further include: electrically connecting the third end 311 of the second guide wire 31 to the connecting contact 21 of the connecting segment 2 , so that the connecting segment 2 is electrically connected to the stimulation segment 1 .

[0091] Reference Fig.11 The present invention also provides a method for manufacturing an electrode wire, comprising: steps S201-S202.

[0092] Step S201 : After electrically connecting the first end 121 of the first guide wire 12 to the stimulation contact 11 , the stimulation contact 11 is installed on the central support 14 .

[0093] Specifically, the first end 121 of the first guide wire 12 can be electrically connected to the stimulation contact 11 by welding, and then the stimulation contact 11 is installed on the central bracket 14, and the first guide wire 12 is also installed on the central bracket 14. All the first guide wires 12 and all the stimulation contacts 11 can be correspondingly welded first, and then the stimulation contact 11 is installed on the central bracket 14. It is also possible to weld a first guide wire 12 and a stimulation contact 11, and then install the stimulation contact 11 on the central bracket 14, and then weld the next first guide wire 12 and the next stimulation contact 11, and repeat this cycle.

[0094] As a preferred method, after the stimulation contact 11 is installed on the central bracket 14, it can also include: inserting the positioning shaft 142 of the central bracket 14 into the positioning hole 133 of the connecting ring 13, so that the central bracket 14 and the connecting ring 13 are connected to each other and form an axial positioning, which can prevent the central bracket 14 and the connecting ring 13 from rotating relative to each other, thereby facilitating the insertion of the first guide wire 12 and the second guide wire 31 into the wire hole 131, and can also prevent the first guide wire 12 and the second guide wire 31 from being misaligned and unable to be welded due to the mutual rotation between the central bracket 14 and the connecting ring 13, and can also prevent the first guide wire 12 and the second guide wire 31 that have been welded from being broken due to the mutual rotation between the central bracket 14 and the connecting ring 13.

[0095] After the stimulation contact 11 is mounted on the central support 14, the method may further include: injecting a filler, the filler is used to fill the gap between the stimulation contact 11, the first guide wire 12 and the central support 14, the filler can make the stimulation contact 11, the first guide wire 12 and the central support 14 more tightly connected, and prevent the stimulation contact 11, the first guide wire 12 and the central support 14 from being separated from each other. The filler is made of an insulating material, such as polyurethane or epoxy resin.

[0096] Step S202: After passing one of the first guide wire 12 and the second guide wire 31 through the wire hole 131 of the connecting ring 13, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are electrically connected, and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are pulled into the wire hole 131 of the connecting ring 13.

[0097] Specifically, after the stimulation contact 11 is mounted on the central support 14, one of the first guide wire 12 and the second guide wire 31 is passed through the connecting ring 13 through the wire hole 131 of the connecting ring 13, and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are electrically connected. For example, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be electrically connected by welding, crimping, etc., and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are pulled into the wire hole 131 of the connecting ring 13. In this way, not only can the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 be protected, but also the connection between the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be insulated and isolated from the outside. In this embodiment, there is no need to set the connecting hole 132, so the production process of the connecting ring 13 is simplified, and the production of the connecting ring 13 is convenient.

[0098] The manufacturing method of the electrode wire may further include: electrically connecting the third end 311 of the second guide wire 31 to the connecting contact 21 of the connecting segment 2 , so that the connecting segment 2 is electrically connected to the stimulation segment 1 .

[0099] Reference Fig.12 The present invention also provides a method for manufacturing an electrode wire, comprising: steps S301-S302.

[0100] Step S301 : After electrically connecting the first end 121 of the first guide wire 12 to the stimulation contact 11 , the stimulation contact 11 is installed on the central support 14 .

[0101] Specifically, the first end 121 of the first guide wire 12 can be electrically connected to the stimulation contact 11 by welding, and then the stimulation contact 11 is installed on the central bracket 14, and the first guide wire 12 is also installed on the central bracket 14. All the first guide wires 12 and all the stimulation contacts 11 can be correspondingly welded first, and then the stimulation contact 11 is installed on the central bracket 14. It is also possible to weld a first guide wire 12 and a stimulation contact 11, and then install the stimulation contact 11 on the central bracket 14, and then weld the next first guide wire 12 and the next stimulation contact 11, and repeat this cycle.

[0102] As a preferred method, after the stimulation contact 11 is installed on the central bracket 14, it can also include: inserting the positioning shaft 142 of the central bracket 14 into the positioning hole 133 of the connecting ring 13, so that the central bracket 14 and the connecting ring 13 are connected to each other and form an axial positioning, which can prevent the central bracket 14 and the connecting ring 13 from rotating relative to each other, thereby facilitating the insertion of the first guide wire 12 and the second guide wire 31 into the wire hole 131, and can also prevent the first guide wire 12 and the second guide wire 31 from being misaligned and unable to be welded due to the mutual rotation between the central bracket 14 and the connecting ring 13, and can also prevent the first guide wire 12 and the second guide wire 31 that have been welded from being broken due to the mutual rotation between the central bracket 14 and the connecting ring 13.

[0103] After the stimulation contact 11 is mounted on the central support 14, the method may further include: injecting a filler, the filler is used to fill the gap between the stimulation contact 11, the first guide wire 12 and the central support 14, the filler can make the stimulation contact 11, the first guide wire 12 and the central support 14 more tightly connected, and prevent the stimulation contact 11, the first guide wire 12 and the central support 14 from being separated from each other. The filler is made of an insulating material, such as polyurethane or epoxy resin.

[0104] Step S302: After one of the first guide wire 12 and the second guide wire 31 passes through the connecting ring 13 through the wire hole 131 of the connecting ring 13, the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are electrically connected to the connecting part respectively, and then the connecting part is pulled into the wire hole 131 of the connecting ring 13.

[0105] Specifically, after the stimulation contact 11 is installed on the central bracket 14, one of the first guide wire 12 and the second guide wire 31 is passed through the connecting ring 13 through the wire hole 131 of the connecting ring 13, and then the second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 are electrically connected to the connecting part respectively. The connecting part is, for example, a cold-pressed tube. The second end 122 of the first guide wire 12 and the fourth end 312 of the second guide wire 31 can be electrically connected to the connecting part respectively by welding, crimping, etc., and then the connecting part is pulled into the wire hole 131 of the connecting ring 13.

[0106] The manufacturing method of the electrode wire may further include: electrically connecting the third end 311 of the second guide wire 31 to the connecting contact 21 of the connecting segment 2 , so that the connecting segment 2 is electrically connected to the stimulation segment 1 .

[0107] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. An electrode lead, characterized in that: The device comprises a stimulation segment for providing electrical stimulation, a connection segment electrically connected to a stimulator or an extension lead, and an intermediate segment connecting the stimulation segment and the connection segment, wherein the stimulation segment comprises a plurality of stimulation contacts, a plurality of first guide wires and at least one connection ring, the connection segment comprises a plurality of connection contacts, and the intermediate segment comprises a plurality of second guide wires; The first end of the first guide wire is electrically connected to the stimulation contact, the third end of the second guide wire is electrically connected to the connection contact, and the second end of the first guide wire and the fourth end of the second guide wire are electrically connected in the connection ring.

2. The electrode lead according to claim 1, characterized in that: The connecting ring is provided with one or more wire passing holes penetrating the connecting ring, the wire passing holes extending along the axial direction of the connecting ring, and the second end of at least one of the first guide wires and the fourth end of at least one of the second guide wires are located in the wire passing holes.

3. The electrode lead according to claim 2, characterized in that: A connecting hole is provided on the side of the connecting ring, the connecting hole is communicated with the wire passing hole, the first guide wire and the second guide wire are exposed in the connecting hole, and the first guide wire and the second guide wire can be welded or bonded through the connecting hole.

4. The electrode lead according to claim 3, characterized in that: The connection holes are arranged in one-to-one correspondence with the wire holes; or, A plurality of the connection holes are connected to one wire-passing hole.

5. The electrode lead according to claim 3, characterized in that: When there are multiple wire holes on one connecting ring, the multiple wire holes are arranged at intervals; When there are multiple connection holes on a connection ring, the multiple connection holes are distributed in one or more of the following ways: circumferential distribution of the connection ring, axial distribution of the connection ring, and staggered distribution.

6. The electrode lead according to claim 1, characterized in that: The stimulation segment further comprises a central support, on which a mounting position for mounting the stimulation contact is arranged.

7. The electrode lead according to claim 6, characterized in that: A positioning shaft is arranged at one end of the central support toward the middle section, a positioning hole penetrating the connecting ring is arranged on the connecting ring, the positioning hole extends along the axial direction of the connecting ring, and the positioning shaft is arranged in the positioning hole.

8. The electrode lead according to claim 1, characterized in that: The connecting ring is an integrated structure or a split structure. When the connecting ring is a split structure, the connecting ring is composed of a plurality of spliced ​​structures, and the second end of at least one of the first guide wires and the fourth end of at least one of the second guide wires are electrically connected in one of the spliced ​​structures.

9. The electrode lead according to claim 2, characterized in that: It also includes a connecting part, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected to the connecting part respectively, and the connecting part is arranged in the wire passing hole of the connecting ring.

10. The electrode lead according to claim 9, characterized in that: The number of the connecting parts is one or more. When the number of the connecting parts is plural, the connecting parts are distributed along the circumference of the electrode wire or are staggered.

11. The electrode lead according to claim 1, characterized in that: The connecting ring is made of insulating material.

12. A method for manufacturing an electrode wire, characterized in that: include: After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support; The second end of the first guide wire is inserted into the wire hole of the connecting ring, and the fourth end of the second guide wire is correspondingly inserted into the wire hole of the connecting ring, and the first guide wire and the second guide wire are welded or bonded through the connecting hole of the connecting ring.

13. The manufacturing method according to claim 12, characterized in that: After welding the first guide wire and the second guide wire, the method further includes: grinding the welding position of the first guide wire and the second guide wire to make the surface of the connecting ring flat and smooth; or, Adhesive is applied to the welding position of the first guide wire and the second guide wire to make the surface of the connecting ring flat and smooth.

14. A method for manufacturing an electrode wire, characterized in that: include: After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support; After one of the first guide wire and the second guide wire passes through the connecting ring through the wire hole of the connecting ring, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected, and then the second end of the first guide wire and the fourth end of the second guide wire are pulled into the wire hole of the connecting ring.

15. A method for manufacturing an electrode wire, characterized in that: include: After electrically connecting the first end of the first guide wire to the stimulation contact, the stimulation contact is mounted on the central support; After one of the first guide wire and the second guide wire passes through the connecting ring through the wire hole of the connecting ring, the second end of the first guide wire and the fourth end of the second guide wire are electrically connected to the connecting part respectively, and then the connecting part is pulled into the wire hole of the connecting ring.

16. The manufacturing method according to claim 12, 14 or 15, characterized in that: After the stimulation contact is installed on the central support, the method further includes: inserting the positioning shaft of the central support into the positioning hole of the connecting ring.

17. The manufacturing method according to claim 12, 14 or 15, characterized in that: After the stimulation contact is installed on the central support, the method further includes: pouring a filler, wherein the filler is used to fill the gap between the stimulation contact, the first guide wire and the central support, and the material of the filler is an insulating material.

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