Electrode lead and nerve stimulation system
By setting a through groove in the separator of the electrode wire, the connection end of the first guide wire is connected to the electrode ring in the through groove, which solves the problem of damage to other guide wires during laser welding and achieves a stable connection of the electrode wire.
Patent Information
- Application Number
- CN202422790044.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-15
AI Technical Summary
During laser welding, existing electrode wires are prone to short circuits or open circuits due to factors such as laser energy reflection and light leakage through gaps, which can damage other wires.
A wire guide groove is provided in the dividing part of the electrode wire so that the connecting end of the first guide wire extends into the wire guide groove and connects with the electrode ring, thus avoiding the influence of laser welding on other guide wires.
It effectively prevents or reduces the risk of damage to other guide wires during laser welding, and avoids the occurrence of short circuits or open circuits in the electrode wires.
Smart Images
Figure CN223542325U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of implantable electrode technology, and in particular to an electrode lead and a nerve stimulation system. Background Technology
[0002] The electrode leads in the related technology include an electrode ring, a stimulation contact, and multiple guide wires. Channels are formed within the electrode leads for the guide wires to pass through, and the electrode ring and stimulation contact are located on the outer periphery of the channels. One of the multiple guide wires is laser-welded to the electrode ring, while the remaining guide wires can be connected to the stimulation contact.
[0003] In related technologies, multiple guide wires are located within the same channel. One guide wire ascends radially along the electrode wire within this channel to the electrode ring, where it is then laser-welded to the electrode ring. Below this laser-welded guide wire are other guide wires. Due to factors such as energy reflection during laser welding and light leakage through the gap between the electrode ring and the corresponding guide wire, the laser energy poses a risk of damaging other guide wires, potentially causing short circuits or open circuits in the electrode wires. Utility Model Content
[0004] The purpose of this invention is to provide an electrode wire and a nerve stimulation system to prevent damage to other components when the first guidewire is connected to the electrode ring.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] An electrode wire, characterized in that it comprises:
[0007] The bracket includes a partition, the partition being provided with a wire passage groove;
[0008] An electrode ring is sleeved on the bracket. The electrode ring includes a connecting portion, and the connecting portion and the wire groove are stacked along the radial direction of the bracket.
[0009] At least one first guide wire extends through the wire groove and is electrically connected to the connection portion of the electrode ring.
[0010] Preferably, the wire groove penetrates at least a portion of the surface of the partition, and the first guide wire extends from the wire groove, protrudes from the surface of the partition, and is electrically connected to the connecting portion.
[0011] Preferably, the connecting part is provided with a connecting channel, and the first guide wire extends from the wire groove into the connecting channel or extends out of the connecting channel.
[0012] Preferably, the connecting channel is a hole penetrating the connecting portion, or the connecting channel is a groove extending from one side of the connecting portion toward the interior of the connecting portion.
[0013] Preferably, the first guide wire is welded to the connection portion of the electrode ring.
[0014] Preferably, the wire groove extends through both sides of the partition;
[0015] Alternatively, the wire groove extends from one side of the partition and passes through a portion of the partition.
[0016] Preferably, it further includes a second guide wire, which is disposed on the side of the partition and separated from the wire groove;
[0017] And / or, the partitions are provided in multiple ways, and a wire passage is formed between adjacent partitions, the wire passage being used for the first guide wire and / or the second guide wire to pass through; one or more of the multiple partitions are provided with the wire passage groove.
[0018] Preferably, the first guide wire and the second guide wire are respectively provided with a spiral portion and a mating portion. The spiral portion of the first guide wire and the spiral portion of the second guide wire extend spirally and form an integral structure. The mating portion of the first guide wire and the mating portion of the second guide wire change their extension direction from the end of the corresponding spiral portion and are independent of each other.
[0019] Preferably, the bracket further includes a main body, and the partition portion protrudes from the outer surface of the main body along the radial direction of the bracket, forming the wire passage between two adjacent partition portions.
[0020] Preferably, it includes at least one group of sheet electrodes, each group of sheet electrodes including multiple electrode pieces, the multiple electrode pieces being distributed with circumferential insulating intervals along the support;
[0021] The electrode sheet is electrically connected to the second guide wire.
[0022] Preferably, two adjacent partitions together form an installation space, and the electrode sheet is disposed within the installation space;
[0023] The surface of the electrode sheet is coplanar with the outer surface of the bracket.
[0024] Preferably, the first guidewire includes a body portion, a first extension portion and a second extension portion, the first extension portion extending from the body portion into the wire guide groove, and the second extension portion extending from the first extension portion to be electrically connected to the connecting portion.
[0025] A neural stimulation system, comprising:
[0026] Stimulator or extension lead;
[0027] The electrode wire of any of the above, wherein one end of the electrode wire is implanted in the patient's body and the other end is electrically connected to the stimulator.
[0028] Preferably, the neural stimulation system further includes:
[0029] An extension wire is provided, through which the stimulator is electrically connected to the electrode wire.
[0030] Compared with the prior art, the beneficial effects of this utility model include at least the following:
[0031] By providing a wire groove on the partition, the connecting end of the first guide wire can extend into the wire groove and further connect with the electrode ring. At this time, the area affected by the connection operation between the connecting end of the first guide wire and the electrode ring is located within the wire groove, and will not or will not affect the area outside the wire groove. This can prevent or reduce the risk of damage to other components of the electrode ring when the first guide wire is connected to the electrode ring. Attached Figure Description
[0032] Figure 1 This is a partial structural schematic diagram of the electrode wire according to an embodiment of the present utility model;
[0033] Figure 2 This is a partial structural diagram of the electrode wire after the electrode ring is removed according to an embodiment of the present invention;
[0034] Figure 3 This is a partial structural schematic diagram of the first and second guidewires according to an embodiment of the present invention;
[0035] Figure 4 This is a schematic diagram of the structure of the bracket according to an embodiment of the present utility model;
[0036] Figure 5 This is a schematic diagram of the structure of a bracket according to another embodiment of the present invention;
[0037] Figure 6 This is a schematic diagram of the electrode ring structure according to an embodiment of the present invention;
[0038] Figure 7 This is a schematic diagram of the structure of the electrode ring according to another embodiment of the present invention.
[0039] In the figure: 1. Bracket; 11. Divider; 111. Cable tray; 112. Surface; 12. Cable channel; 13. Main body; 14. Stop; 15. Installation space; 151. Groove; 2. Electrode ring; 21. Connecting part; 211. Connecting channel; 3. First guide wire; 31. Connecting end; 32. Main body; 33. First extension section; 34. Second extension section; 35. Spiral part; 36. Mating part; 4. Second guide wire; 5. Segmented electrode; 51. Electrode sheet. Detailed Implementation
[0040] 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.
[0041] 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.
[0042] like Figure 1 and Figure 2 As shown, this utility model provides an electrode wire, including a support 1, an electrode ring 2, and a first guide wire 3, and may also include a second guide wire 4 and a segmented electrode 5.
[0043] One or more first guide wires 3 may be provided. The first guide wire 3 is a guide wire used for electrical connection with the electrode ring 2. Specifically, the first guide wire 3 includes a connecting end 31, which extends to the electrode ring 2 for electrical connection. For example, the connecting end 31 of the first guide wire 3 is laser welded to the electrode ring 2 to achieve electrical connection between the first guide wire 3 and the connecting end 31. The first guide wire 3 may specifically be a spring guide wire.
[0044] The second guide wire 4 is used for electrical connection with the segmented electrode 5. One or more second guide wires 4 and segmented electrodes 5 can be provided, with each second guide wire 4 connected to one or more segmented electrodes 5, or each segmented electrode 5 connected to one or more second guide wires 4. The second guide wire 4 can achieve electrical connection with the segmented electrode 5 through welding or other methods. In this embodiment, multiple second guide wires 4 can be provided, for example, seven second guide wires 4 are specifically provided. Specifically, the second guide wire 4 can be a spring guide wire.
[0045] Reference Figure 3The first guide wire 3 and the second guide wire 4 are respectively provided with a helical portion 35 and a mating portion 36. The helical portion 35 of the first guide wire 3 has a helical extension structure, and the extension direction of the first guide wire 35 changes at the end to form the mating portion 36. The extension direction of the mating portion 36 changes from the helical portion 35 to be parallel or approximately parallel to the extension direction of the electrode wire. The helical portion 35 of the second guide wire 4 has a helical extension structure, and the extension direction of the second guide wire 4 changes at the end to form the mating portion 36. The extension direction of the mating portion 36 changes from the helical portion 35 to be parallel or approximately parallel to the extension direction of the electrode wire. The starting and ending ends of the helical portions 35 of the first guide wire 3 and the second guide wire 4 can overlap and together form an integral structure. The first guide wire 3 and the second guide wire 4 change their extension direction at the end of the spiral portion 35 so that the mating portion 36 of the first guide wire 3 and the mating portion 36 of the second guide wire 4 are both independent structures, so as to facilitate the connection of the first guide wire 3 and the second guide wire 4 with other components, such as the electrode ring 2 or the segmented electrode 5.
[0046] Reference Figure 1 and Figure 4 The extension direction of the support 1 is the same as that of the electrode wire. The electrode ring 2, the segmented electrode 5, the first guide wire 3, and the second guide wire 4 can be connected to the support 1. Specifically, the support 1 may include a main body 13 and a partition 11. The main body 13 is a long rod-shaped structure extending along the extension direction of the electrode wire. The partition 11 may protrude from the main body 13 along the radial direction of the support 1. The radial direction of the support 1 is the direction that passes through and is perpendicular to the extension axis of the support 1, for example, from the inside of the support 1 to the outside, or from the outside to the inside.
[0047] In some specific embodiments, a partition 11 may be provided. The first guide wire 3 and the second guide wire 4 may be provided on the outer periphery of the main body 13, and at least a portion of the first guide wire 3 and the second guide wire 4 are located on the side of the partition 11 along the circumferential direction of the bracket 1. The portion of the first guide wire 3 located on one side of the partition 11 and the second guide wire 4 do not protrude from the partition 11 in the radial direction of the bracket 1.
[0048] In some other specific implementations, refer to Figure 2 and Figure 4Multiple partitions 11 can be provided, and the multiple partitions 11 are distributed circumferentially along the main body 13, and a wire passage 12 for guide wires to pass through can be formed between adjacent partitions 11. Specifically, the opposite sides of adjacent partitions 11 and part of the outer peripheral surface of the main body 13 together form a wire passage 12. The number of wire passages 12 can be multiple. Each wire passage 12 can allow one or more guide wires to pass through, preferably, each wire passage 12 is used for multiple guide wires to pass through. Specifically, a first guide wire 3 and at least one second guide wire 4 can pass through a wire passage 12, or a wire passage 12 is used for multiple second guide wires 4 to pass through.
[0049] When there are seven second guide wires 4, the partition 11 and the wire passage 12 can each be provided with three. One first guide wire 3 and one or two second guide wires 4 pass through one wire passage 12, and two or three second guide wires 4 pass through another wire passage 12. At this time, three of the eight guide wires consisting of one first guide wire 3 and seven second guide wires 4 form one group, another three form one group, and the remaining two form one group. Each wire passage 12 is used to pass through one group of guide wires. Among them, the parts of the guide wires extending in the wire passage 12 do not protrude from the partition 11.
[0050] In some specific embodiments, at least one partition 11 is provided with a wire passage groove 111. The wire passage groove 111 communicates at least with the wire passage channel 12 for the first guide wire 3 to pass through, and one end of the wire passage groove 111 penetrates at least a portion of the surface 112 of the partition 11; therefore, one end of the first guide wire 3 can extend from the wire passage channel 12 into the wire passage groove 111, and rise within the wire passage groove 111 to the surface 112 protruding from the partition 11 for electrical connection with the electrode ring 2.
[0051] Specifically, refer to Figure 2 and Figure 3The first guide wire 3 includes a body portion 32 and a connecting end 31 interconnected with each other. The body portion 32 extends within the wire passage 12. The connecting end 31 extends from the wire passage 12 into the wire groove 111 and rises to electrically connect with the electrode ring 2. The connecting end 31 includes a first extension 33 and a second extension 34. The first extension 33 extends from the body portion 32 into the wire groove 111, and the extension end of the first extension 33 away from the body portion 32 can be stacked with the electrode ring 2 in the radial direction of the support 1, so that the extension end of the first extension 33 can be located below the position of the electrode ring 2 for connection with the first guide wire 3. The second extension 34 rises from the extension end of the first extension 33 to electrically connect with the electrode ring 2, for example, by laser welding. A wire groove 111 can be provided in only one partition 11, and the connecting end 31 of the first guide wire 3 extends into the wire groove 111 of this partition 11. Alternatively, multiple partitions 11 may be provided with wire grooves 111, and the connecting end 31 of the first guide wire 3 may extend into one of the wire grooves 111. In this embodiment, the radial direction may specifically be the direction extending from the center position of the bracket 1 toward the surface of the partition 11. In the radial direction, the direction closer to the center position of the bracket 1 may be downward, and the direction farther from the center position of the bracket 1 may be upward.
[0052] By extending the connecting end 31 of the first guide wire 3 into the wire groove 111, and the second guide wire 4 extending into the wire passage 12, the second guide wire 4 is positioned on one side of the partition 11 and is blocked by the partition 11, thus separating it from the wire groove 111. At this time, the area below the connection position of the first guide wire 3 and the electrode ring 2 is only the connecting end 31 of the first guide wire 3 and the wall forming the wire groove 111, and not the second guide wire 4. Therefore, the connection operation between the first guide wire 3 and the electrode ring 2 will not affect the second guide wire 4. For example, when the first guide wire 3 and the electrode ring 2 are laser welded, factors such as energy reflection during laser welding and light leakage through the gap between the electrode ring 2 and the first guide wire 3 will only affect the area below the connection position of the first guide wire 3 and the electrode ring 2, and will not affect the second guide wire 4 located on one side of the wire groove 111. This can effectively prevent damage to the second guide wire 4 caused by energy reflection during laser welding and light leakage through the gap between the electrode ring 2 and the first guide wire 3, and prevent short circuits or open circuits in the electrode wires.
[0053] Reference Figure 4 The cable tray 111 can pass through the opposite sides of the partition 11, for example, along the circumference or radial direction of the bracket 1 through the opposite sides of the partition 11. Or, refer to Figure 5The through groove 111 may not penetrate the opposite sides of the partition 11. That is, the through groove 111 extends from one side of the partition 11 and passes through a portion of the partition 11. The partition 11 that is not penetrated in the extension direction of the through groove 111 forms a stop portion 14 located at the extension end of the through groove 111. When the through groove 111 does not penetrate the opposite sides of the partition 11, at least a portion of the through groove 111 is stacked with the portion of the electrode ring 2 used to connect the first guide wire 3 in the radial direction of the support 1. The stop portion 14 can be used to prevent the first guide wire 3 from moving along the extension direction of the through groove 111 and to allow the first guide wire 3 to rise to electrical connection with the electrode ring 2.
[0054] In this embodiment, the wire groove 111 can specifically be a groove that passes through the partition 11 along the circumference of the bracket 1, and multiple partitions 11 are respectively provided with wire grooves 111.
[0055] Reference Figure 1 The electrode ring 2 is sleeved on the bracket 1, and the inner circumference of the electrode ring 2 can abut against the surface 112 of the partition portion 11 of the bracket 1. The electrode ring 2 includes a connecting portion 21, which can be stacked with a corresponding wire guide groove 111 along the radial direction of the bracket 1 and is used for electrical connection with the first guide wire 3. The corresponding wire guide groove 111 is a wire guide groove 111 for the connecting end 31 of the first guide wire 3 to extend.
[0056] The connecting portion 21 of the electrode ring 2 can form a connecting channel 211, which communicates with the wire groove 111, so that the connecting end 31 of the first guide wire 3 can extend from the wire groove 111 into the connecting channel 211 or extend out of the connecting channel 211. Then, the connecting end 31 of the first guide wire 3 is electrically and fixedly connected to the connecting portion 21 of the electrode ring 2 by laser welding.
[0057] The connecting channel 211 extends through the electrode ring 2 along the radial direction of the bracket 1. (Refer to...) Figure 6 The connecting channel 211 can be a groove extending from one side of the connecting portion 21 toward the inside of the connecting portion 21, forming a connecting channel 211 for the connecting end 31 to extend; specifically, the groove can be a U-shaped groove extending from one side of the connecting portion 21 along the extending direction of the bracket 1 toward the inside of the connecting portion 21. Alternatively, refer to Figure 7 The connecting channel 211 can be a hole that passes through the connecting portion 21 in the radial direction of the bracket 1, and the hole forms a connecting channel 211 for the connecting end 31 to extend.
[0058] The segmented electrodes 5 can be provided in one or more groups. When there are multiple groups of segmented electrodes 5, the multiple groups of segmented electrodes 5 are spaced and insulatedly distributed along the extension direction of the support 1. Each group of segmented electrodes 5 may include multiple electrode pieces 51, and the multiple electrode pieces 51 in each group of segmented electrodes are distributed insulatedly and spaced along the circumferential direction of the support 1. The electrode pieces 51 are used for electrical connection with the second guide wire 4, for example, the electrode pieces 51 and the second guide wire 4 are electrically connected by welding.
[0059] Reference Figure 1 , Figure 4 and Figure 5 The surface of the electrode sheet 51 can be coplanar with the outer surface of the bracket 1. Specifically, two adjacent partitions 11 together form a mounting space 15, which is used to accommodate the electrode sheet 51, and the depth of the mounting space 15 is the same as the thickness of the electrode sheet 51. At this time, when the electrode sheet 51 is installed in the mounting space 15, the surface of the electrode sheet 51 can be coplanar with the outer surface of the bracket 1.
[0060] The adjacent partitions 11 may be provided with grooves 151 respectively. The grooves 151 of the adjacent partitions 11 are arranged opposite each other and are used together to form the installation space 15. When the electrode sheet 51 is installed in the installation space 15, one side of the electrode sheet 51 is located in the groove 151 of one partition 11, the other side of the electrode sheet 51 is located in the groove 151 of the adjacent partitions 11, and the middle part of the electrode sheet 51 is located above the wire passage 12 between the adjacent partitions 11.
[0061] This invention also provides a neurostimulation system, including the aforementioned electrode leads and a stimulator, and may further include extension leads. One end of the electrode lead is implanted in the patient's body, and the other end of the electrode lead can be electrically connected to the stimulator. Specifically, the electrode lead can be directly electrically connected to the stimulator, or the electrode lead can be connected to an extension lead, and then electrically connected to the stimulator via the extension lead. The stimulator can apply electrical signals to the electrode ring 2 or the segmented electrode 5 through the corresponding guidewire of the electrode lead, so that the electrode ring 2 and the segmented electrode 5 can release electrical stimulation for treating the patient.
[0062] 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 electrode wire, characterized in that, include: The bracket (1) includes a partition (11) having a wire groove (111). An electrode ring (2) is sleeved on the bracket (1). The electrode ring (2) includes a connecting part (21). The connecting part (21) and the wire groove (111) are stacked together along the radial direction of the bracket (1). At least one first guide wire (3) extends through the wire groove (111) and is electrically connected to the connection portion (21) of the electrode ring (2).
2. The electrode wire according to claim 1, characterized in that, The wire groove (111) penetrates at least a portion of the surface (112) of the partition (11), and the first guide wire (3) extends from the wire groove (111), protrudes from the surface (112) of the partition (11), and is electrically connected to the connecting portion (21).
3. The electrode wire according to claim 1, characterized in that, The connecting part (21) is provided with a connecting channel (211), and the first guide wire (3) extends from the wire groove (111) into the connecting channel (211) or extends out of the connecting channel (211).
4. The electrode wire according to claim 3, characterized in that, The connecting channel (211) is a hole that passes through the connecting part (21), or the connecting channel (211) is a groove that extends from one side of the connecting part (21) toward the interior of the connecting part (21).
5. The electrode wire according to claim 1, characterized in that, The first guide wire (3) is welded to the connection part (21) of the electrode ring (2).
6. The electrode wire according to claim 1, characterized in that, The wire groove (111) passes through the opposite sides of the partition (11); Alternatively, the wire groove (111) extends from one side of the partition (11) through a portion of the partition (11).
7. The electrode wire according to claim 1, characterized in that, It also includes a second guide wire (4), which is disposed on the side of the partition (11) and separated from the wire groove (111); And / or, the partition (11) is provided in multiple ways, and a wire passage (12) is formed between adjacent partitions (11), the wire passage (12) is used for the first guide wire (3) and / or the second guide wire (4) to pass through; one or more of the multiple partitions (11) are provided with the wire passage groove (111).
8. The electrode wire according to claim 7, characterized in that, The first guide wire (3) and the second guide wire (4) are respectively provided with a spiral portion (35) and a mating portion (36). The spiral portion (35) of the first guide wire (3) and the spiral portion (35) of the second guide wire (4) extend spirally and form an integral structure. The mating portion (36) of the first guide wire (3) and the mating portion (36) of the second guide wire (4) change their extension direction from the end of the corresponding spiral portion (35) and are independent of each other.
9. The electrode wire according to claim 7, characterized in that, The bracket (1) also includes a main body (13), and the partition (11) protrudes from the outer surface of the main body (13) along the radial direction of the bracket (1), and the wire passage (12) is formed between two adjacent partitions (11).
10. The electrode wire according to claim 7, characterized in that, It includes at least one set of sheet electrodes (5), each set of sheet electrodes (5) includes a plurality of electrode sheets (51), and the plurality of electrode sheets (51) are distributed along the circumferential insulating interval of the support (1); The electrode sheet (51) is electrically connected to the second guide wire (4).
11. The electrode wire according to claim 10, characterized in that, The two adjacent partitions (11) together form an installation space (15), and the electrode sheet (51) is disposed in the installation space (15); The surface of the electrode sheet (51) is coplanar with the outer surface of the support (1).
12. The electrode wire according to claim 1, characterized in that, The first guide wire (3) includes a body portion (32), a first extension portion (33) and a second extension portion (34). The first extension portion (33) extends from the body portion (32) into the wire groove (111), and the second extension portion (34) extends from the first extension portion (33) to be electrically connected to the connecting portion (21).
13. A neural stimulation system, characterized in that, include: Stimulator; The electrode wire as described in any one of claims 1 to 12, wherein one end of the electrode wire is implanted in the patient's body and the other end is electrically connected to the stimulator.
14. The neural stimulation system according to claim 13, characterized in that, The neural stimulation system also includes: An extension wire is provided, through which the stimulator is electrically connected to the electrode wire.