Electrode lead and nerve stimulation system

Abstract

The utility model discloses an electrode lead and a nerve stimulation system. The electrode lead comprises a stimulation section used for providing electrical stimulation, a connection section and a middle section connecting the stimulation section and the connection section. The stimulation section comprises a plurality of stimulation contacts, the connection section comprises a plurality of connection contacts, the connection contacts and the stimulation contacts are electrically connected through a plurality of guide wires, the middle section comprises an outer sleeve, and the guide wires extend in the outer sleeve. Wherein the end, close to the connecting section, of the middle section is a transition section, the transition section and the connecting section jointly form a hardening section, the hardening section comprises a supporting part, and the supporting part is made of a non-metal material. The electrode wire can be conveniently inserted into other functional modules, so that the operation difficulty of a user is reduced, the guide wire cannot be damaged, and the stability and the safety of the performance of the electrode wire are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to implantable medical device technical field especially, a kind of electrode lead wire and nerve stimulation system. BACKGROUND

[0002] With the development of nerve stimulation technology, more and more symptoms are proved to be effective by electric stimulation on nerve or specific area, such as DBS (deep brain stimulation) for Parkinson's disease, primary tremor and other diseases.

[0003] The electrode lead wire is an important part of the nerve stimulation system. The electrode lead wire includes a stimulation segment and a connection segment. The stimulation contacts of the stimulation segment and the connection contacts of the connection segment are electrically connected by a guide wire. The stimulation segment is implanted in the lesion, and the connection segment is connected to other functional modules. The other functional modules provide stimulation signals for the electrode lead wire. The other functional modules are, for example, a stimulator or an extension lead wire. The two ends of the extension lead wire are electrically connected to the electrode lead wire and the stimulator, respectively. When the electrode lead wire is connected to the other functional modules, a certain force needs to be applied to the electrode lead wire to insert the electrode lead wire into the other functional modules. Since the electrode lead wire needs to be implanted in the human body, the electrode lead wire itself is very thin and soft, and does not have enough support force, which makes it difficult to insert the electrode lead wire into the other functional modules. When the electrode lead wire is inserted into the other functional modules by hand, it is inconvenient for the user to hold the electrode lead wire of the hand-held segment because it has no support force. In order to improve the support force of the electrode lead wire, a metal tube is provided in the electrode lead wire. However, since the electrode lead wire will bend during use, the end of the metal tube will damage the guide wire, causing the guide wire to short circuit or open circuit.

[0004] Therefore, the existing electrode lead wire needs to be improved. SUMMARY

[0005] The utility model aims at providing a kind of electrode lead wire and nerve stimulation system, not only be convenient for inserting other functional modules, to reduce the operation difficulty of user, and will not cause damage to guide wire, ensure the stability and security of electrode lead wire performance.

[0006] The utility model discloses the following technical solutions to achieve the purpose:

[0007] An electrode lead wire includes a stimulation segment for providing electric stimulation, a connection segment, and an intermediate segment connecting the stimulation segment and the connection segment.

[0008] The stimulation segment includes a plurality of stimulation contacts, the connection segment includes a plurality of connection contacts, the connection contacts and the stimulation contacts are electrically connected by a plurality of guide wires, and the intermediate segment includes an outer sleeve.

[0009] The intermediate section is provided with a transition section near one end of the connecting section, and the transition section and the connecting section jointly form a hardened section, and the hardened section comprises a support part made of a non-metal material.

[0010] Preferably, the support part is made of an elastic material.

[0011] Preferably, the elastic material is a high polymer material.

[0012] Preferably, the elastic modulus of the support part ranges from E, and the elastic modulus E ranges from 2.5GPa to 4.5GPa.

[0013] Preferably, the hardened section further comprises a filler, and the filler is made of an insulating material.

[0014] When the filler is located in the connecting section, the filler is located between the connecting contact and the support part.

[0015] When the filler is located in the transition section, the filler is located between the outer sleeve and the support part.

[0016] Preferably, along the axial direction of the electrode lead, the length of the support part in the intermediate section is greater than the length of the filler in the intermediate section.

[0017] Preferably, the length of the support part in the intermediate section is L1, and the length L1 ranges from 50mm to 60mm, and the length of the filler in the intermediate section is L2, and the length L2 ranges from 36.5mm to 46.5mm.

[0018] Preferably, the intermediate section further comprises an inner liner tube, the inner liner tube is sleeved on the guide wire and located in the outer sleeve, and the filler is located between the outer sleeve and the inner liner tube.

[0019] Preferably, one end of the outer sleeve extends to the connecting section, and the connecting contact is sleeved on the outer sleeve located in the connecting section.

[0020] Preferably, the outer diameter of the outer sleeve located in the connecting section is smaller than the outer diameter of the outer sleeve located in other positions; and / or,

[0021] The hardness of the outer sleeve located in the hardened section is greater than the hardness of the outer sleeve located in other positions.

[0022] Preferably, the connecting section further comprises a plurality of isolation rings, and the isolation rings are distributed at intervals with the connecting contact; and / or,

[0023] The connecting section further comprises a locking ring arranged at one end of the connecting section close to the intermediate section.

[0024] Preferably, the support part is arranged in a spiral hole formed by a plurality of the guide wires spirally wound along an axial direction of the electrode lead.

[0025] A nerve stimulation system comprising:

[0026] a stimulator;

[0027] The electrode lead according to any one of the preceding claims, one end of the electrode lead is implanted into a patient, and the other end of the electrode lead is electrically connected to the stimulator.

[0028] Preferably, the nerve stimulation system further comprises:

[0029] an extension lead, the stimulator being electrically connected to the electrode lead through the extension lead.

[0030] Compared with the prior art, the electrode lead and the nerve stimulation system have at least the following beneficial effects:

[0031] The electrode lead and the nerve stimulation system have at least the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of a three-dimensional structure of the electrode lead of the utility model embodiment.

[0033] Figure 2 is Figure 1 is a local enlarged schematic diagram of A in the middle.

[0034] Figure 3 is a decomposition schematic view of the electrode lead wire of the embodiment of the present application.

[0035] Figure 4 is Figure 3 is a partial enlarged schematic view at B in the middle.

[0036] Figure 5 is a plane structure schematic view of the electrode lead wire of the embodiment of the present application.

[0037] Figure 6 is a cross-sectional schematic view along Figure 5 A-A line in the middle.

[0038] Figure 7 is Figure 6 is a partial enlarged schematic view at C in the middle.

[0039] Figure 8 is Figure 6 is a partial enlarged schematic view at D in the middle.

[0040] Figure 9 is a three-dimensional structure schematic view of the outer sleeve in the embodiment of the present application.

[0041] In the figure: 100, electrode lead wire; 1, stimulation section; 11, stimulation contact; 12, plug; 2, connecting section; 21, connecting contact; 22, isolation ring; 23, locking ring; 3, intermediate section; 31, outer sleeve; 311, first part; 312, second part; 313, third part; 32, inner liner; 33, transition section; 34, lead wire section; 4, guide wire; 41, helical hole; 5, hardening section; 51, support part; 52, filler. DETAILED DESCRIPTION

[0042] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will not be repeated.

[0043] The words expressing position and direction described in the present application are explained by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0044] Referring to Figures 1 to 9The utility model provides a kind of electrode lead wire 100, including the stimulation section 1 for providing electric stimulation for the affected part of patient, connecting section 2 and the intermediate section 3 of connecting stimulation section 1 and connecting section 2.Connecting section 2 can be electrically connected with other functional modules, other functional modules can include stimulator (not shown), and connecting section 2 can be inserted into stimulator, to make the connecting contact 21 of connecting section 2 electrically connected with stimulator.In some embodiments, other functional modules can also include extension lead (not shown), and connecting section 2 can be electrically connected with stimulator by extension lead, and connecting section 2 can be inserted into extension lead, to make the connecting contact 21 of connecting section 2 electrically connected with extension lead.

[0045] With reference to Figure 1 , stimulation section 1 and connecting section 2 can be respectively arranged at both ends of intermediate section 3, and intermediate section 3 serves to connect stimulation section 1 and connecting section 2.Intermediate section 3 is used to transmit the stimulation signal of connecting section 2 to stimulation section 1, and stimulation section 1 performs electric stimulation on the affected part of patient.In the case that the length of stimulation section 1 is constant, the length of intermediate section 3 determines the overall length of electrode lead wire 100, so as to ensure that stimulation section 1 can be implanted into patient's body to a position deep enough.

[0046] Specifically, with reference to Figure 1 , stimulation section 1 can include a plurality of stimulation contacts 11, that is, stimulation section 1 is provided with one or more stimulation contacts 11.Stimulation contacts 11 are exposed to the outer surface of stimulation section 1, so as to ensure that stimulation contacts 11 can have good contact with the affected part of patient, thereby ensuring that stimulation contacts 11 can perform electric stimulation on the affected part of patient.Stimulation contacts 11 of stimulation section 1 can be in one or more of sheet shape or ring shape, and can be set according to actual needs.

[0047] With reference to Figure 1 , Figure 2 , connecting section 2 can include a plurality of connecting contacts 21, that is, connecting section 2 is provided with one or more connecting contacts 21.In the present embodiment, connecting section 2 can be provided with a plurality of connecting contacts 21, and stimulator can provide a plurality of stimulation signals through the plurality of connecting contacts 21, and the plurality of connecting contacts 21 are arranged at intervals from each other, so as to avoid mutual interference between connecting contacts 21, thereby avoiding mutual interference between stimulation signals of stimulator.Connecting contacts 21 of connecting section 2 can be in one or more of sheet shape or ring shape, and can be set according to actual needs.In the present embodiment, connecting contacts 21 of connecting section 2 are in ring shape.

[0048] With reference to Figure 3 , Figure 4 , Figure 6The connecting contact 21 and the stimulating contact 11 can be electrically connected by a plurality of guide wires 4, the plurality of guide wires 4 are spirally wound along the axial direction of the electrode lead wire 100 and form a spiral hole 41, so that the tensile property and the bending strength of the electrode lead wire 100 can be increased, the implantation of the electrode lead wire 100 is ensured to be smooth, and the breakage of the electrode lead wire 100 is avoided. When the connecting contact 21 is annular, the connecting contact 21 can be sleeved outside the spirally wound guide wire 4. The number of the connecting contact 21, the number of the stimulating contact 11 and the number of the guide wire 4 are preferably the same, and the connecting contact 21, the stimulating contact 11 and the guide wire 4 are arranged one by one, that is, one end of the guide wire 4 is connected with the connecting contact 21 and the other end of the guide wire 4 is connected with the stimulating contact 11.

[0049] With reference to Figure 3 , the intermediate section 3 can include an outer sleeve 31, the guide wire 4 is in the outer sleeve 31, the outer sleeve 31 can be a hollow cylinder as a whole, the outer sleeve 31 is in direct contact with the patient, and the guide wire 4 is protected from physical and chemical damage. The material of the outer sleeve 31 is a high polymer material, such as medical-grade silicone, polyurethane, PET, PTFE, FEP or TPE, so as to ensure that the outer sleeve 31 has sufficient strength while maintaining a certain flexibility to adapt to the tensile, compression and other stresses in the implantation environment, and the outer sleeve also has biocompatibility to ensure that no immune response or other adverse reactions occur when in contact with the patient.

[0050] As a preferred mode, with reference to Figure 1 , the stimulating section 1 can further include a plug 12, the plug 12 can be arranged at one end of the stimulating section 1 away from the intermediate section 3, and the end of the plug 12 facing the patient is a smooth end face, such as a hemispherical convex head. The plug 12 not only has a plugging effect on the stimulating section 1 to prevent the patient's tissue fluid from entering the inside of the stimulating section 1, but also can reduce the damage to the human tissue when the electrode lead wire 100 is implanted.

[0051] With reference to Figure 3 , Figure 4 , the connecting section 2 can further include a plurality of isolation rings 22, that is, the connecting section 2 is provided with one or more isolation rings 22. In this embodiment, the number of the isolation rings 22 is multiple, and the isolation rings 22 are distributed at intervals with the connecting contact 21, so that the multiple connecting contacts 21 can be arranged at intervals to ensure that the connecting contacts 21 are insulated from each other. The shape of the isolation ring 22 is preferably annular. The plurality of isolation rings 22 and the plurality of connecting contacts 21 can be arranged in close proximity to each other.

[0052] With reference to Figure 3 , Figure 4The connecting section 2 can further comprise a locking ring 23 arranged at one end of the connecting section 2 close to the intermediate section 3. In use, when the electrode lead 100 is inserted into other functional modules, the screw on the functional module can also press on the locking ring 23 to fix the electrode lead 100 and the functional module together. The locking ring 23 is made of a material with high structural strength, and the material of the locking ring 23 is preferably a metal material, so as to ensure that the locking ring 23 has sufficient structural strength. An isolation ring 22 can be arranged between the locking ring 23 and the connecting contact 21, which can ensure that the locking ring 23 and the connecting contact 21 are insulated.

[0053] Wherein, with reference to Figure 4 The end of the intermediate section 3 close to the connecting section 2 is a transition section 33, and the transition section 33 and the connecting section 2 jointly form a hardened section 5. The hardened section 5 can comprise a support part 51, which can be arranged in the spiral hole 41, that is, the support part 51 is arranged in the transition section 33 and the connecting section 2 at the same time, and the material of the support part 51 is a non-metal material. The support part 51 has a supporting effect on the spiral wire 4, thereby improving the structural strength of the hardened section 5.

[0054] As a preferred mode, the support part 51 is made of an elastic material, which can be a high polymer material, such as PEEK (polyether ether ketone) material, etc. In this way, the support part 51 has a certain hardness to provide sufficient support force for the hardened section 5, and has a certain flexibility, which will not cause damage to the wire 4. As an example, the support part 51 can be in the form of a hollow cylinder as a whole, which is convenient for the insertion of the tungsten wire (not shown), and the wall thickness of the support part 51 is 0.05mm, which is not easy to break in the case of bending. More preferably, the elastic modulus of the support part 51 ranges from 2.5 to 4.5 GPa, that is, the elastic modulus of the support part 51 is E, and the value range of the elastic modulus E is: 2.5 GPa≤E≤4.5 GPa.

[0055] In the present application, by setting the support part 51 at the end of the electrode lead wire 100 towards other functional modules to form the hardened section 5, the hardened section 5 includes the connecting section 2 and the transition section 33, when the electrode lead wire 100 is inserted into other functional modules, the user can hold the transition section 33 and insert the connecting section 2 into other functional modules, because the support part 51 can enhance the structural strength of the hardened section 5, so that the connecting section 2 and the transition section 33 both have sufficient support force, not only facilitating the user to hold the transition section 33, but also facilitating the connecting section 2 to be inserted into other functional modules, thereby reducing the operation difficulty of the user. When the electrode lead wire 100 is bent during use, the guide wire 4 is pressed by the end of the support part 51, the end of the support part 51 made of metal has high hardness and sharpness, and the end of the support part 51 made of metal can damage the guide wire 4, causing the guide wire 4 to short circuit or open circuit. By setting the material of the support part 51 to be a non-metal material, the end of the support part 51 made of a non-metal material has low hardness and softness, which can reduce the damage of the support part 51 to the guide wire 4, and can avoid abrasion of the insulating layer on the surface of the guide wire 4 and breakage of the guide wire 4, thereby avoiding short circuit between adjacent guide wires 4 and breakage of the guide wire 4, thereby ensuring the stability and safety of the performance of the electrode lead wire 100, thereby improving the treatment effect on the patient and avoiding damage to the patient, and also prolonging the service life of the electrode lead wire 100.

[0056] In a specific embodiment, referring to Figure 3 , Figure 4 , Figure 7 , Figure 8 , the hardened section 5 can further include a filler 52, the material of the filler 52 is an insulating material, for example, polyurethane or epoxy resin, etc. The filler 52 can be in a liquid state before being arranged in the hardened section 5, so as to facilitate the filler 52 to be filled into the inside of the hardened section 5, and also to ensure the uniformity of the distribution of the filler 52 in the hardened section 5. The filler 52 can form a solid state after being arranged in the hardened section 5, and the filler 52 can be changed from a liquid state to a solid state by a certain physical or chemical method. The filler 52 changed to a solid state has the effect of supporting and strengthening the hardened section 5 of the electrode lead wire 100.

[0057] Referring to Figure 8 , when the filler 52 is located in the connecting section 2, the filler 52 can be located between the connecting contact 21 and the support part 51, and the filler 52 can fill the gap between the connecting contact 21, the isolation ring 22 and the support part 51. Not only can the structural strength of the connecting section 2 be further enhanced to facilitate the insertion of the connecting section 2 into other functional modules, thereby reducing the operation difficulty of the user, but also the guide wire 4 can be fixed to prevent the guide wire 4 from being separated from the connecting contact 21 due to the stretching of the electrode lead wire 100, thereby ensuring the stability of the electrical connection between the guide wire 4 and the connecting contact 21.

[0058] Referring toFigure 7 When the filler 52 is located at the transition section 33, the filler 52 can be located between the outer sleeve 31 and the support 51, the filler 52 can fill the gap between the outer sleeve 31 and the support 51, and can further enhance the structural strength of the transition section 33, facilitate the user to hold the transition section 33, and thus reduce the operation difficulty of the user.

[0059] With reference to Figure 3 , Figure 4 , Figure 7 The intermediate section 3 can further include an inner sleeve 32, the inner sleeve 32 can be a hollow cylinder as a whole, the inner sleeve 32 is sleeved on the guide wire 4 and located in the outer sleeve 31, the inner sleeve 32 not only has a protective effect on the guide wire 4, but also facilitates the insertion of the guide wire 4 into the outer sleeve 31. The filler 52 can be located between the outer sleeve 31 and the inner sleeve 32, that is, the filler 52 can be filled between the outer sleeve 31 and the inner sleeve 32 located at the transition section 33, and the filler 52 can fill the gap between the outer sleeve 31 and the inner sleeve 32. In this way, the structural strength of the transition section 33 can also be further enhanced, the user can hold the transition section 33 more easily, and thus the operation difficulty of the user can be reduced

[0060] As a preferred mode, with reference to Figure 6The length of the support part 51 located in the middle section 3 is greater than the length of the filler 52 located in the middle section 3, that is, the length of the support part 51 located in the transition section 33 is greater than the length of the filler 52 located in the transition section 33. The end of the middle section 3 away from the connecting section 2 is the lead wire section 34, that is, the middle section 3 includes the lead wire section 34 and the transition section 33, and the lead wire section 34 is not provided with the support part 51 and the filler 52, and the lead wire section 34 is relatively soft, which facilitates the implantation of the electrode lead wire 100 into the body of the patient. The transition section 33 is provided with the support part 51 and the filler 52 at the same time, which can ensure that the transition section 33 has sufficient structural strength, which facilitates the user to hold, and the structural strength of the part of the transition section 33 provided with the support part 51 and the filler 52 at the same time is greater than the structural strength of the part of the transition section 33 provided with only the support part 51, so that the structural strength of the end of the transition section 33 close to the connecting section 2 is greater than the structural strength of the end of the transition section 33 close to the lead wire section 34, and the structural strength of the end of the transition section 33 away from the connecting section 2 is greater than the structural strength of the lead wire section 34, that is, the structural strength of the middle section 3 gradually decreases in the direction from the connecting section 2 to the stimulation section 1, so that the transition of the structural strength of the middle section 3 is more natural, and when the electrode lead wire 100 is bent in the process of use, the bending degree of the joint between the transition section 33 and the lead wire section 34 can be reduced, which not only can prevent the middle section 3 from being broken, but also can reduce the pressing force between the distal end of the support part 51 and the guide wire 4, so that the damage of the guide wire 4 by the support part 51 can be reduced, the abrasion of the insulating layer on the surface of the guide wire 4 and the breakage of the guide wire 4 can be avoided, so that the short circuit between adjacent guide wires 4 and the open circuit of the guide wire 4 can be avoided, thereby ensuring the stability and safety of the performance of the electrode lead wire 100, and further improving the treatment effect on the patient and avoiding damage to the patient, and at the same time, the service life of the electrode lead wire 100 can be prolonged.

[0061] As an example, with reference to Figure 6 The length of the support part 51 located in the middle section 3 is 55±5mm, that is, the length of the support part 51 located in the middle section 3 is L1, and the value range of the length L1 is: 50mm≤L1≤60mm, and the length of the filler 52 located in the middle section 3 is 41.5±5mm, that is, the length of the filler 52 located in the middle section 3 is L2, and the value range of the length L2 is: 36.5mm≤L2≤46.5mm. In this way, it can be ensured that the part of the transition section 33 provided with the support part 51 and the filler 52 at the same time has sufficient length, which facilitates the user to hold, and at the same time, the transition of the structural strength of the transition section 33 is more natural.

[0062] In another embodiment, one end of the outer sleeve 31 can extend to the connecting section 2, the connecting contact 21 can be sleeved on the outer sleeve 31 located at the connecting section 2, and the isolation ring 22 is sleeved on the outer sleeve 31 located at the connecting section 2 and spaced from the connecting contact 21. In this embodiment, the outer sleeve 31 is sleeved on the outside of the support part 51 and the guide wire 4, and the filler 52 can not be arranged between the connecting contact 21 and the support part 51, that is, the outer sleeve 31 can replace the filler 52, and the outer sleeve 31 can also enhance the structural strength of the connecting part, facilitate the insertion of the connecting section 2 into other functional modules, and thus reduce the operation difficulty of the user.

[0063] As a preferred mode, the outer diameter of the outer sleeve 31 located at the connecting section 2 is smaller than the outer diameter of the outer sleeve 31 located at other positions, so as to ensure that after the connecting contact 21 and the isolation ring 22 are sleeved on the outer sleeve 31 located at the connecting section 2, the outer diameter of the connecting section 2 is the same as or approximately the same as the outer diameter of the intermediate section 3.

[0064] The hardness of the outer sleeve 31 located at the hardening section 5 is greater than the hardness of the outer sleeve 31 located at other positions, and the hardness of the outer sleeve 31 located at the connecting section 2 and at least part of the outer sleeve 31 located at the transition section 33 can be greater than the hardness of the outer sleeve 31 located at other positions by using the existing processing mode, so as to improve the structural strength of the hardening section 5, which not only facilitates the user to hold the transition section 33, but also facilitates the insertion of the connecting section 2 into other functional modules, thereby reducing the operation difficulty of the user.

[0065] As an example, referring to Figure 9 , the outer sleeve 31 can be divided into a first part 311, a second part 312 and a third part 313, the first part 311, the second part 312 and the third part 313 can be integrally formed, and the first part 311, the second part 312 and the third part 313 can also be in a split type and connected into one by welding, bonding or the like. The first part 311 can be located at the wire section 34, the second part 312 can be located at the transition section 33, and the third part 313 can be located at the connecting section 2, wherein the outer diameter of the first part 311 and the second part 312 can be the same, and the outer diameter of the third part 313 can be smaller than the outer diameter of the first part 311 and the second part 312. The hardness of the second part 312 and the third part 313 is the same, and the hardness of the second part 312 and the third part 313 is greater than the hardness of the first part 311.

[0066] The length of the support part 51 in the transition section 33 along the axial direction of the electrode lead wire 100 is greater than the length of the second part 312 in the transition section 33, that is, the first part 311 can be located in the transition section 33. The structural strength of the transition section 33 close to one end of the connecting section 2 is greater than the structural strength of the transition section 33 close to one end of the lead wire section 34. When the electrode lead wire 100 is bent during use, the bending degree of the joint between the transition section 33 and the lead wire section 34 can be reduced, which can not only prevent the intermediate section 3 from being broken, but also reduce the pressure between the guide wire 4 and the end of the support part 51. This can reduce the damage of the support part 51 to the guide wire 4, avoid the abrasion of the insulating layer on the surface of the guide wire 4 and the breakage of the guide wire 4, thereby avoiding the short circuit between adjacent guide wires 4 and the breakage of the guide wire 4, thereby ensuring the stability and safety of the performance of the electrode lead wire 100, thereby improving the treatment effect on the patient and avoiding damage to the patient, and prolonging the service life of the electrode lead wire 100.

[0067] The present application also provides a nerve stimulation system, which can include a stimulator and the above-mentioned electrode lead wire 100. One end of the electrode lead wire 100 can be implanted in the patient's body, at least part of the stimulation section 1 of the electrode lead wire 100 can be implanted in the patient's body, the other end of the electrode lead wire 100 can be electrically connected with the stimulator, and the connecting section 2 of the electrode lead wire 100 can be electrically connected with the stimulator. In use, the user holds the transition section 33 to insert the connecting section 2 into the stimulator. The stimulator can be a pulse generator, which transmits a stimulation signal to the patient's affected area through the electrode lead wire 100, and the stimulation contact 11 of the stimulation section 1 performs electrical stimulation on the patient's affected area.

[0068] The nerve stimulation system can also include an extension lead (not shown), and the electrode lead wire 100 can be electrically connected with the stimulator through the extension lead. One end of the extension lead can also be electrically connected with the connecting contact 21 of the connecting section 2 of the electrode lead wire 100, and in use, the user holds the transition section 33 to insert the connecting section 2 into one end of the extension lead. The other end of the extension lead can be electrically connected with the stimulator, and the extension lead can transmit a stimulation signal of the stimulator to the connecting contact 21 of the connecting section 2. The connecting contact 21 of the connecting section 2 transmits the stimulation signal to the stimulation contact 11 of the stimulation section 1 through the filter through the first transmission line, and the stimulation contact 11 of the stimulation section 1 performs electrical stimulation on the patient's affected area.

[0069] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments without departing from the principles and purposes of the present application within the scope of the present application. All these changes should be within the protection scope of the claims of the present application.

Claims

1. An electrode lead, characterized by The electrode lead wire comprises a stimulation section for providing electrical stimulation, a connecting section, and an intermediate section connecting the stimulation section and the connecting section; The stimulation section comprises a plurality of stimulation contacts, the connecting section comprises a plurality of connecting contacts, the connecting contacts and the stimulation contacts are electrically connected by a plurality of guide wires, and the intermediate section comprises an outer sleeve tube, and the guide wires are located in the outer sleeve tube; The intermediate section is provided with a transition section at one end close to the connecting section, and the transition section and the connecting section jointly form a hardened section, and the hardened section comprises a support part made of a non-metal material.

2. The electrode lead of claim 1, wherein The support part is made of an elastic material.

3. The electrode lead of claim 2, wherein, The elastic material is a high polymer material.

4. The electrode lead of claim 2, wherein, The elastic modulus of the support part is E, and the value range of the elastic modulus E is 2.5GPa≤E≤4.5GPa.

5. The electrode lead of claim 1, wherein, The hardened section further comprises a filler, and the filler is made of an insulating material; When the filler is located in the connecting section, the filler is located between the connecting contacts and the support part; When the filler is located in the transition section, the filler is located between the outer sleeve tube and the support part.

6. The electrode lead of claim 5, wherein, The length of the support part in the intermediate section is greater than the length of the filler in the intermediate section along the axial direction of the electrode lead wire.

7. The electrode lead of claim 6, wherein, The length of the support part in the intermediate section is L1, and the value range of the length L1 is 50mm≤L1≤60mm, and the length of the filler in the intermediate section is L2, and the value range of the length L2 is 36.5mm≤L2≤46.5mm.

8. The electrode lead of claim 5, wherein, The intermediate section further comprises an inner lining tube, the inner lining tube is sleeved on the guide wire and located in the outer sleeve tube, and the filler is located between the outer sleeve tube and the inner lining tube.

9. The electrode lead of claim 1, wherein, One end of the outer sleeve tube extends to the connecting section, and the connecting contacts are sleeved on the outer sleeve tube located in the connecting section.

10. The electrode lead of claim 9, wherein, The outer diameter of the outer sleeve tube located in the connecting section is smaller than the outer diameter of the outer sleeve tube located in other positions; and / or, The hardness of the outer sleeve tube located in the hardened section is greater than the hardness of the outer sleeve tube located in other positions.

11. The electrode lead of claim 1, wherein, The connecting section further comprises a plurality of isolation rings, and the isolation rings are distributed at intervals with the connecting contacts; and / or, The connecting section further comprises a locking ring, and the locking ring is arranged at one end of the connecting section close to the intermediate section.

12. The electrode lead of claim 1, wherein, A plurality of the guide wires are spirally wound along the axial direction of the electrode lead wire and form a spiral hole, and the support part is arranged in the spiral hole.

13. A neurostimulation system, comprising: The electrode lead wire comprises: a stimulator; The electrode lead wire according to any one of claims 1 to 12, one end of the electrode lead wire is implanted into a patient's body, and the other end of the electrode lead wire is electrically connected with the stimulator.

14. The neurostimulation system of claim 13, wherein, The neural stimulation system further comprises: an extension lead wire, and the stimulator is electrically connected with the electrode lead wire through the extension lead wire.

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