Electrode lead and nerve stimulation system

Abstract

The utility model discloses an implantable electrode lead and a nerve stimulation system, and the implantable electrode lead comprises an implantation section implanted into the cranium, an extension section connected with the implantation section, an accommodation channel, and a supporting member. The accommodating channel extends from the extension section to the front end of the implantation section but does not penetrate through the front end of the implantation section; the supporting piece is arranged in the containing channel, and the rigidity of the supporting piece comprises at least two kinds. The electrode lead and the nerve stimulation system are used for simplifying the implantation operation of the implantable electrode lead, improving the deformation resistance of the electrode lead, and further prolonging the use and accommodation of the implantable electrode lead.

Description

Technical Field

[0001] This utility model relates to the field of implantable electrode lead technology, and in particular to an electrode lead and a nerve stimulation system. Background Technology

[0002] Electrode leads are medical devices implanted in a patient's body to treat the patient by applying electrical stimulation. For example, electrode leads can be implanted within the skull for deep brain stimulation. Electrode leads consist of an intracranial segment implanted within the skull and an extracranial segment located outside the skull. After the intracranial segment is implanted within the skull, it is secured using a cranial foramen electrode lock on the skull. The extracranial segment is implanted subcutaneously and connected to an extension lead.

[0003] In related technologies, when implanting electrode leads, a long tungsten wire is first inserted into the electrode lead to improve its overall strength and straightness. This ensures that the intracranial segment maintains good strength and rigidity during implantation, facilitating its placement in the predetermined location. Once the intracranial segment of the electrode lead is implanted into the skull, the long tungsten wire is removed, allowing the extracranial segment to bend and extend to connect with the extension lead.

[0004] In related technologies, the helical guidewire in the electrode lead has a hollow internal structure. During the connection between the extracranial segment and the extension lead, one end of the extracranial segment is clamped to pull it towards the extension lead for connection. The hollow internal structure of the helical guidewire makes it prone to deformation under stress when the extracranial segment is clamped. Furthermore, the connection point between the extracranial segment and the extension lead is generally located below the temporal bone and above the clavicle, which is the area where the electrode lead is most susceptible to bending or torsion. Because the helical guidewire is hollow and easily deformed when clamping the extracranial segment, its fatigue resistance decreases sharply when the electrode lead is bent or torsioned, thus reducing the lifespan of the electrode lead.

[0005] Furthermore, the removal of the long tungsten wire may increase the direction of movement of the intracranial segment of the electrode wire, which may cause the intracranial segment to deviate from the intended position, thereby causing the electrode contact of the electrode wire to deviate from the target implantation point and affecting the treatment effect. Utility Model Content

[0006] The purpose of this invention is to provide an electrode lead and a nerve stimulation system to simplify the implantation of the electrode lead and improve the electrode lead's resistance to deformation.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] An implantable electrode lead, comprising:

[0009] The implant segment is inserted into the cranium;

[0010] An extension segment connected to the implanted segment;

[0011] A containment channel that extends from the extension section to the front end of the implantation section but does not penetrate the front end of the implantation section;

[0012] A support member is disposed within a receiving channel, and the stiffness of the support member includes at least two types.

[0013] Preferably, the support member is a flexible segment at the implantation segment position, and the support member includes at least one rigid segment at the extension segment position.

[0014] Preferably, the support member includes a first part and a second part at the extension section, and the first part and the second part have different stiffnesses.

[0015] Preferably, the first part is for inserting an extension wire or stimulator, the second part is the part between the first part and the implanted segment, and the stiffness of the first part is greater than that of the second part.

[0016] Preferably, the support member is a rigid segment at the implantation segment position, and the support member includes at least one flexible segment at the extension segment position.

[0017] Preferably, the rigid segment and the flexible segment are prefabricated segments with different rigidities, and the rigid segment and the flexible segment are fixedly connected to form an integral structure.

[0018] Preferably, the rigid segment is made of a rigid polymer material, and the flexible segment is made of one of polyurethane, nylon, or silicone rubber; or, the flexible segment is a spring wire or a spiral wire.

[0019] Preferably, the rigid segment and the flexible segment are an integral structure.

[0020] Preferably, the rigid segment is a solid structure and the flexible segment is a hollow structure, so that the rigid segment has a greater rigidity than the flexible segment.

[0021] Alternatively, the cross-sectional dimensions of the rigid segment are larger than those of the flexible segment, so that the rigid segment has greater rigidity than the flexible segment.

[0022] Alternatively, a metal wire may be embedded inside the rigid segment to make the rigid segment more rigid than the flexible segment.

[0023] Preferably, the rigid segment is a hollow or solid structure, and the flexible segment is a hollow or solid structure.

[0024] Preferably, the implantable electrode wire further includes a plurality of guide wires, the guide wires extending from the implantation section into the extension section, and the guide wires are spirally wound around the outside of the support member.

[0025] Preferably, the electrode wire further includes a flexible support structure disposed on the outside of the guide wire.

[0026] Preferably, the electrode wire includes an outer tube, and the support structure is disposed between the guide wire and the outer tube;

[0027] And / or, the support structure is a woven mesh structure.

[0028] Preferably, the support member is provided with a first limiting part at one end away from the implantation segment, and the implantable electrode wire is provided with a second limiting part at one end away from the implantation segment. The first limiting part and the second limiting part are engaged to limit the relative position between the support member and the implantable electrode wire.

[0029] And / or, the front end of the support member is provided with a guide portion, which is used to facilitate the insertion of the support member into the receiving channel of the electrode wire.

[0030] A neural stimulation system, comprising:

[0031] Stimulator;

[0032] One end of any of the above-mentioned implantable electrode leads is implanted in the patient's body, and the other end is electrically connected to the stimulator.

[0033] Preferably, the neural stimulation system further includes:

[0034] An extension lead is provided, through which the stimulator is electrically connected to the implantable electrode lead.

[0035] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0036] By incorporating a support within the implantable electrode lead, the lead can be supported, eliminating the need for an additional tungsten filament support structure during implantation and simplifying the procedure. The support offers at least two stiffness settings, allowing different sections to be configured to meet specific requirements. This ensures the support remains within the lead without needing to be removed, preventing the impact of removing a long tungsten filament on the implantation's positional accuracy. Furthermore, the support enhances the lead's strength, effectively improving its resistance to deformation and minimizing or eliminating deformation of internal components during clamping, thus extending the lead's lifespan. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the electrode wire according to an embodiment of the present invention;

[0038] Figure 2 This is a cross-sectional view of the electrode wire according to an embodiment of the present invention;

[0039] Figure 3 This is a cross-sectional view of the electrode wires when the support is removed according to an embodiment of the present invention;

[0040] Figure 4 This is a structural schematic diagram of the support member according to an embodiment of the present utility model;

[0041] Figure 5 This is a schematic diagram of the structure when the electrode wire of this novel embodiment is implanted into the patient's skull.

[0042] In the diagram: 1. Electrode lead; 11. Implantation segment; 12. Extension segment; 13. Guide wire; 14. Outer tube; 15. Second limiting part; 16. Stimulation end; 161. Segmented electrode; 162. Electrode sheet; 17. Connecting end; 171. Connecting contact point; 2. Support component; 21. Rigid segment; 22. Flexible segment; 221. First part; 222. Second part; 23. First limiting part; 24. Guide part; 3. Reception channel; 200. Stimulator; 300. Electrode lock; 400. Extension lead; 500. Temporal bone; 600. Clavicle. Detailed Implementation

[0043] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0044] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0045] like Figure 1 As shown, this utility model provides an implantable electrode lead 1, including an implantation section 11, an extension section 12, and a support member 2.

[0046] The implant segment 11 is used to be implanted inside the skull of a patient and to generate electrical stimulation for treatment. Specifically, the implant segment 11 may include a stimulation end 16, which includes at least one slice electrode 161. Each slice electrode 161 includes one or more electrode pads 162. When the slice electrode 161 includes multiple electrode pads 162, the multiple electrode pads 162 are distributed with insulating intervals along the circumferential direction of the implant segment 11. When multiple slice electrodes 161 are provided, the multiple slice electrodes 161 are spaced apart along the extension direction of the implant segment 11. Each electrode pad 162 can serve as a stimulation contact to apply electrical stimulation to the patient.

[0047] One end of the extension segment 12 is connected to the implant segment 11, and the other end extends to connect with other components, such as an extension lead or stimulator. The extension segment 12 can extend lateral to the patient's skull. When the implantable electrode lead is implanted into the patient's skull, the implant segment 11 is implanted within the skull, and the extension segment 12 is located lateral to the skull and subcutaneously, meaning that the extension segment 12 extends subcutaneously from the end of the implant segment 11 adjacent to the skull to be electrically connected to the extension lead or stimulator.

[0048] In some specific embodiments, a connection end 17 is provided on the side of the extension segment 12 away from the implantation segment 11. The connection end 17 is provided with connecting contacts 171 for connection with other components, such as extension leads or stimulators. The connection end 17 may have one or more connecting contacts 171. When multiple connecting contacts 171 are provided, the multiple connecting contacts 171 are distributed with insulating intervals along the extension direction of the extension segment 12.

[0049] Both the implant segment 11 and the extension segment 12 have hollow portions. The hollow portions in the implant segment 11 and the extension segment 12 are connected and together form a receiving channel 3. This receiving channel 3 extends from the end of the implant segment 11 away from the extension segment 12 to the front end of the extension segment 12, but does not penetrate the implant segment 11. The front end of the extension segment 12 is the end that first enters the patient's skull during the implantation operation, that is, the end of the extension segment 12 away from the implant segment 11.

[0050] Reference Figure 1 and Figure 2 The electrode leads may also contain a plurality of guide wires 13, at least a portion of which is located within the extension section 12. Specifically, a portion of the guide wire 13 is located within the implantation section 11, and another portion is located within the extension section 12. The guide wire 13 can extend from the stimulation end 16 to the connection end 17 so that the stimulation contact and the connection contact 171 are electrically connected through the guide wire 13. Multiple guide wires 13 are spirally wound to form a helical structure, and the interior of each guide wire 13 is hollow. One end of each guide wire 13 can be used to connect one or more stimulation contacts, and the other end can be used to connect one or more connection contacts 171.

[0051] Reference Figure 2 and Figure 3 The support member 2 is disposed within the receiving channel 3 to increase the strength of the electrode wire, thereby improving the electrode wire's resistance to deformation. Specifically, the support member 2 can be disposed within the hollow structure formed inside the guide wire 13, for example, the guide wire 13 is spirally wound around the outside of the support member 2. In this case, the support member 2 can effectively support the guide wire 13, avoiding or substantially avoiding deformation of the guide wire 13 when it is clamped by external force.

[0052] Reference Figure 4 The support member 2 has at least two types of stiffness, so that different parts of the support member 2 can be set to corresponding stiffness as needed to meet corresponding requirements. Specifically, the support member 2 may include a rigid segment 21 and a flexible segment 22, wherein the rigid segment 21 has a greater stiffness than the flexible segment 22.

[0053] In some specific embodiments, at least a portion of the support member 2 within the extension 12 includes a rigid segment 21. For example, the portion of the support member 2 within the extension 12 has uniform stiffness, and the portion of the support member 2 within the extension 12 is used to form the rigid segment 21. The rigid segment 21 has superior rigidity, thus effectively improving the strength of the extension 12. When the extension 12 is clamped, the rigid segment 21 effectively supports the extension 12, improving the electrode wire's resistance to deformation. Specifically, the rigid segment 21 is supported within the guide wire 13 located within the extension 12. When the extension 12 is clamped, the clamping force on the extension 12 is transmitted to the guide wire 13 and further to the rigid segment 21. The rigid segment 21, the guide wire 13, and other structures of the extension 12 jointly resist the clamping force, thereby improving the electrode wire's resistance to deformation and avoiding or substantially avoiding deformation of the guide wire 13 caused by the clamping force.

[0054] It should be noted that the rigid segment 21, meaning it is more rigid than the flexible segment 22, does not imply that the rigid segment 21 is an indeformable rigid structure. The rigid segment 21 is roughly a thin wire-like structure and can be bent. During the extension process, the extension segment 12 needs to conform to the patient's contour. The flexible rigid segment 21 reduces its impact on the overall flexibility of the extension segment 12, allowing it to support the extension segment 12 while enabling it to bend and thus conform to the patient's contour. The insertion position of the rigid segment 21 can be the same as that used in related technologies when inserting a long tungsten wire into an extracranial segment.

[0055] The support 2 can form a flexible segment 22 in the implantation segment 11. When the implantation segment 11 tends to bend, the flexible segment 22 provides resistance to reduce or eliminate the bending amount, thereby improving the straightness and strength of the implantation segment 11 and facilitating its implantation. Furthermore, the flexible segment 22 can remain within the implantation segment 11 without needing to be removed, thus avoiding any impact on the positional accuracy of the implantation segment 11 when it is removed, ensuring accurate positioning and the therapeutic effect of the electrode lead. The insertion position of the flexible segment 22 can be the same as that used in related technologies when inserting a long tungsten wire into the intracranial segment.

[0056] When the extension segment 12 is connected to the extension lead or stimulator, even if the connection point is located in a position susceptible to bending and torsion, such as below the temporal bone of the skull or above the clavicle, the rigid segment 21 can reduce or prevent deformation of the extension segment 12 and the guide wire 13 within it due to clamping forces. This reduces the decrease in fatigue resistance of the guide wire 13 when the electrode lead bends or twists. Furthermore, the rigid segment 21 can also reduce the degree of bending or twisting of the guide wire 13 when the electrode lead bends or twists, further reducing the decrease in fatigue resistance and improving the lifespan of the electrode lead. In addition, the rigid segment 21 and flexible segment 22 of the support 2 can remain within the electrode lead, eliminating the need for removal, thus simplifying the procedure and reducing the difficulty of the surgeon's operation.

[0057] Reference Figure 4 In some specific embodiments, the support member 2 at the extension segment 12 may include a first portion 221 and a second portion 222, with the first portion 221 and the second portion 222 having different rigidities. For example, when the required degree of bending of the extension segment 12 is different, or to improve the strength of the clamped portion and the easily bent and deformable portion of the extension segment 12, the rigidity of the support member 2 at the extension segment 12 can be adjusted to different values ​​as needed to form a first portion 221 and a second portion 222 with different rigidities, thereby adjusting the rigidity at different positions according to actual needs. The first portion 221 can be a portion for inserting an extension wire or stimulator for connection with the extension wire or stimulator, and the second portion 222 is the portion between the first portion 221 and the implanted segment 11. The first portion 221 constitutes the rigid segment 21, and the second portion 222 may have the same rigidity as the flexible segment 22, or the rigidity of the second portion 222 may be less than the rigidity of the flexible segment 22. In other embodiments, the support member 2 at the extension segment 12 may also be divided into three or more portions, each with different rigidities, as needed.

[0058] In some other embodiments, the support member 2 at the implantation segment 11 can be a rigid segment 21 to improve the strength of the implantation segment 11; while the support member 2 at the extension segment 12 includes a flexible segment 22 and a support segment with greater rigidity than the flexible segment 22. The support segment is located in the part of the extension segment 12 used to connect with the extension lead or stimulator to provide better support. The flexible segment 22 is located between the support segment and the implantation segment 11 to facilitate the bending of the extension segment 12 and its extension along the desired path.

[0059] In some specific embodiments, the rigid segment 21 and the flexible segment 22 can be prefabricated segments with different rigidities. After the rigid segment 21 and the flexible segment 22 are respectively prepared, the rigid segment 21 and the flexible segment 22 are fixedly connected to obtain the support member 2 of the overall structure. The rigid segment 21 and the flexible segment 22 can be fixedly connected by adhesive bonding, or the rigid segment 21 and the flexible segment 22 can be prefabricated with a mechanical connection structure so that the rigid segment 21 and the flexible segment 22 can be fixedly connected by mechanical fixing methods such as snap-fit ​​or threaded connection. Alternatively, the rigid segment 21 and the flexible segment 22 can also be connected by other fixing methods.

[0060] The rigid segment 21 and the flexible segment 22 can be made of different materials to achieve different levels of rigidity. Specifically, the rigid segment 21 can be made of a rigid polymer material to provide good rigidity. The rigid segment 21 can be formed from one or more rigid polymer materials such as Peek (polyether ether ketone), Pebax (polyether block polyamide), and PI (polyimide). The flexible segment 22 can be formed from one or more materials such as polyurethane, nylon, and silicone rubber. Alternatively, the flexible segment 22 can also be a structure with lower rigidity, such as a spring wire or a spiral wire.

[0061] In some specific embodiments, the rigid segment 21 and the flexible segment 22 can be an integral structure. The rigid segment 21 and the flexible segment 22 can be made of the same material, and the cross-sectional dimensions of the rigid segment 21 are larger than those of the flexible segment 22. For example, when the support member 2 is made of nylon filament, the diameter of the nylon filament forming the rigid segment 21 is larger than the diameter of the nylon filament forming the flexible segment 22, so that the rigidity of the rigid segment 21 is greater than that of the flexible segment 22.

[0062] Alternatively, the rigid segment 21 and the flexible segment 22 can be made of the same material, with the rigid segment 21 being a solid structure and the flexible segment 22 having a hollow structure at its center, thereby making the rigid segment 21 more rigid than the flexible segment 22.

[0063] Alternatively, the rigid segment 21 and the flexible segment 22 can be made of the same material. Metal wires can be embedded inside the rigid segment 21 to enhance its rigidity, thereby making the rigid segment 21 more rigid than the flexible segment 22.

[0064] It should be noted that when the support member 2 does not need to adopt a solid or hollow structure to make the rigid segment 21 and the flexible segment 22 have different rigidities, the support member 2 can be set as a solid structure or a hollow structure as a whole. For example, when the rigid segment 21 and the flexible segment 22 are made of different materials, the rigid segment 21 and the flexible segment 22 can both be set as solid structures or both be hollow structures, and then the rigid segment 21 and the flexible segment 22 are fixedly connected to form an integral structure; or, when the rigid segment 21 and the flexible segment 22 are an integral structure, the rigid segment 21 and the flexible segment 22 can both be solid structures or both be hollow structures.

[0065] When the support member 2 is located at the position of the extension section 12 and includes a first part 221 and a second part 222 with different rigidities, the first part 221 and the second part 222 can form different rigidities by using the above-mentioned rigid section 21 and flexible section 22 to achieve different rigidities.

[0066] In some specific embodiments, the electrode leads may also be provided with a flexible support structure. This flexible support structure is at least located within the extension section 12 to increase the strength of the extension section 12, thereby reducing the degree of torsion or deformation of the extension section 12, and reducing or eliminating deformation caused by the guide wire 13 within the extension section 12 when it is clamped and pulled. The flexible support structure can be bent, thus having little or no impact on the overall flexibility of the extension section 12, ensuring that the extension section 12 can extend in accordance with the patient's contours.

[0067] The support structure can specifically be a braided mesh structure formed by fine filament weaving. The support structure can be disposed between the outer tube 14 of the electrode lead and the guide wire 13. The support structure can be disposed only between the outer tube 14 and the guide wire 13 located within the extension section 12, or it can be disposed between the outer tube 14 and all of the guide wires 13. That is, the support structure can be disposed not only within the extension section 12 but also within the implantation section 11. The outer tube 14 partially forms the outer wall of the implantation section 11 and partially forms the exterior of the extension section 12.

[0068] Reference Figures 2 to 4In some specific embodiments, a first limiting part 23 is provided at the end of the support member 2 away from the implantation segment 11, and a second limiting part 15 is provided at the end of the electrode wire away from the implantation segment 11. The first limiting part 23 and the second limiting part 15 cooperate to restrict the position of the support member 2 within the electrode wire. Specifically, the first limiting part 23 can be the part with the largest cross-sectional dimension of the support member 2, for example, the part with the largest diameter in the support member 2. The second limiting part 15 is a groove for receiving the first limiting part 23, and the bottom wall of the second limiting part 15 abuts against the first limiting part 23 to restrict the movement of the first limiting part 23, thereby restricting the position of the support member 2 within the electrode wire, and preventing the length of the support member 2 extending into the receiving channel 3 from being too long and pushing off the head of the stimulation end of the electrode wire. Furthermore, a guide portion 24 is provided at the insertion end of the support member 2, that is, the end of the support member 2 away from the first limiting portion 23. When the support member 2 is inserted into the receiving channel 3, the guide portion 24 enters the receiving channel 3 first. The guide portion 24 is used to facilitate the insertion of the support member 2 into the receiving channel 3 of the electrode wire 1 and to prevent the support member 2 from scratching other components of the electrode wire during the insertion process. Specifically, the guide portion 24 can be formed by a smooth chamfer provided at the end of the support member 2.

[0069] Reference Figure 5 This invention also provides a neurostimulation system, including a stimulator 200, an electrode lock 300, and the aforementioned implantable electrode lead. The implantation segment 11 of the implantable electrode lead is implanted inside the patient's skull. The electrode lock 300 is located at the top of the patient's skull and is used to lock the connection between the implantation segment 11 and the extension segment 12 to secure the electrode lead. The extension segment 12 extends from the side of the implantation segment 11 adjacent to the skull to the temporal bone 500 and further extends between the temporal bone 500 and the clavicle 600 to be directly electrically connected to the stimulator 200; alternatively, the neurostimulation system further includes an extension lead 400, the extension segment 12 is connected to the extension lead 400, and the extension lead 400 is electrically connected to the stimulator 200, so that the stimulator 200 can apply an electrical signal to the stimulation contacts in the electrode lead through the extension lead 400 to control the electrode lead to apply electrical stimulation to the patient.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. An implantable electrode lead, comprising: The implantable electrode lead comprises: an implant segment (11) implanted in the brain; an extension segment (12) connected to the implant segment (11); a receiving channel (3) extending from the extension segment (12) to the front end of the implant segment (11) but not penetrating the front end of the implant segment (11); a support member (2) arranged in the receiving channel, the support member (2) having at least two different rigidities.

2. The implantable electrode lead of claim 1, wherein, The support member (2) is flexible at the implant segment (11) and includes at least one rigid segment at the extension segment (12).

3. The implantable electrode lead of claim 2, wherein, The support member (2) includes a first part (221) and a second part (222) at the extension segment (12), the first part (221) and the second part (222) having different rigidities.

4. The implantable electrode lead of claim 3, wherein, The first part (221) is for inserting an extension lead or a stimulator part, and the second part (222) is between the first part (221) and the implant segment (11), the first part (221) having a greater rigidity than the second part (222).

5. The implantable electrode lead of claim 1, wherein, The support member (2) is rigid at the implant segment (11) and includes at least one flexible segment at the extension segment (12).

6. The implantable electrode lead of either of claims 2 or 5, wherein, The rigid segment (21) and the flexible segment (22) are separately preformed segments with different rigidities, and are fixedly connected to form an integral structure.

7. The implantable electrode lead of claim 6, wherein, The rigid segment (21) is made of a hard polymer material, and the flexible segment (22) is made of one of polyurethane, nylon, and silicone rubber, or the flexible segment (22) is a spring wire or a spiral wire.

8. The implantable electrode lead of either of claims 2 or 5, wherein, The rigid segment (21) and the flexible segment (22) are of an integral structure.

9. The implantable electrode lead of claim 8, wherein, The rigid segment (21) is of a solid structure, and the flexible segment (22) is of a hollow structure, so that the rigidity of the rigid segment (21) is greater than that of the flexible segment (22). Alternatively, the cross-sectional dimension of the rigid segment (21) is greater than that of the flexible segment (22), so that the rigidity of the rigid segment (21) is greater than that of the flexible segment (22). Alternatively, the rigid segment (21) is internally embedded with a metal wire, so that the rigidity of the rigid segment (21) is greater than that of the flexible segment (22).

10. The implantable electrode lead of either of claims 2 or 5, wherein, The rigid segment (21) is of a hollow structure or a solid structure, and the flexible segment (22) is of a hollow structure or a solid structure.

11. The implantable electrode lead of claim 1, wherein, The implantable electrode lead further comprises a plurality of guide wires (13) extending from the implant segment (11) into the extension segment (12), and the guide wires (13) are spirally wound on the outside of the support member (2).

12. The implantable electrode lead of claim 11, wherein, The electrode lead (1) further comprises a flexible support structure arranged on the outside of the guide wires (13).

13. The implantable electrode lead of claim 12, wherein, The electrode lead (1) comprises an outer tube (14), and the support structure is arranged between the guide wires (13) and the outer tube (14). And / or, the support structure is a woven mesh structure.

14. The implantable electrode lead of claim 1, wherein, An end of the support member (2) away from the implantable section (11) is provided with a first limiting part (23), and an end of the implantable electrode lead wire away from the implantable section (11) is provided with a second limiting part (15), the first limiting part (23) and the second limiting part (15) being matched to limit the relative position between the support member (2) and the implantable electrode lead wire; And / or, a front end of the support member (2) is provided with a guide part (24) for facilitating insertion of the support member (2) into the accommodation channel (3) of the electrode lead wire (1).

15. A neurostimulation system, comprising: Comprise: a stimulator; The implantable electrode lead wire according to any one of claims 1 to 14, one end of which is implanted in a patient's body and the other end of which is electrically connected to the stimulator.

16. The neurostimulation system of claim 15, wherein, The neural stimulation system further comprises: an extension lead wire, the stimulator being electrically connected to the implantable electrode lead wire through the extension lead wire.

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