Flexible electrode connection assembly and flexible electrode system

Abstract

The application discloses a flexible electrode connecting assembly and a flexible electrode system, and the flexible electrode connecting assembly comprises a columnar lead member, a flexible electrode and an adapter. The connecting site part of the flexible electrode is attached to the outer peripheral surface of the lead contact part of the columnar lead member, and the first electrode connecting site part is arranged to face the first lead contact part of the columnar lead member and at least partially overlaps the first lead contact part. The lead contact part and the connecting site part attached to the outer peripheral surface thereof are inserted into the cavity through the opening of the adapter; and the elastic bridging member is pressed against the back surface of the first electrode connecting site part away from one side of the columnar lead member, so that the first electrode connecting site part is tightly pressed against the corresponding first lead contact part and forms an electrical connection. According to the flexible electrode connecting assembly, the structure of the flexible electrode connecting assembly is relatively simple, and the modular extrusion fitting of the columnar lead member and the adapter is facilitated, so that the fast and stable cross-electrode electrical conduction, high-density physical fixation and sealing between the columnar lead member and the flexible electrode are realized.

Description

Technical Field

[0001] This invention relates to the field of flexible electrode technology, and in particular to a flexible electrode connection assembly and a flexible electrode system. Background Technology

[0002] In bioelectrical signal acquisition and tissue electrical stimulation scenarios, flexible electrodes, with their excellent flexibility and deformation capabilities, can conform to soft tissue surfaces. Compared to rigid electrodes, they reduce mechanical stimulation to body tissues and are widely used in related medical devices. Flexible electrodes are generally positioned at the distal end to contact the target tissue. An output circuit is needed to transmit the electrical signal from the electrode site to an external circuit to achieve signal recording or electrical stimulation output.

[0003] In related technologies, the circuit lead-out structure of flexible electrodes is relatively complex, and the process requirements for the transition position are high. Therefore, there is an urgent need for a flexible electrode assembly with a reasonable structure, convenient assembly and positioning, and stable conductive connection. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a flexible electrode connection assembly with a relatively simple structure, which facilitates quick and stable cross-electrode electrical conduction and high-density physical fixation and sealing between the columnar conductor and the flexible electrode.

[0005] According to a first aspect of the present invention, a flexible electrode connection assembly includes: a cylindrical conductor, the cylindrical conductor including at least a conductor portion and a conductor contact portion, the conductor portion including at least one conductive core wire, the outer periphery of the conductor contact portion having at least one first conductor contact, each first conductor contact being electrically connected to a corresponding conductive core wire, and the conductor contact portion having a positioning core; a flexible electrode, the flexible electrode including a connection point portion, a connection lead portion and a distal point portion connected in sequence, the connection point portion having a sheet-like structure and located at the proximal end of the flexible electrode, the connection point portion having at least one first electrode connection point, and the connection point portion forming an auxiliary assembly hole; the connection lead portion connecting the connection point portion and the distal point portion for realizing electrical connection inside the flexible electrode; and an adapter. The adapter has a cavity, and an opening is formed at one axial end of the adapter. The cavity communicates with the outside through the opening. At least one elastic bridging member is provided on the inner wall of the cavity of the adapter. The connection point of the flexible electrode is attached to the outer peripheral surface of the wire contact of the columnar conductor. The positioning core passes through the auxiliary assembly hole to form a detachable plug-in positioning fit. The first electrode connection point is arranged facing the first wire contact and at least partially overlaps with it. The wire contact and the connection point attached to its outer peripheral surface are inserted into the cavity through the opening of the adapter. The elastic bridging member presses against the side of the first electrode connection point away from the columnar conductor, so that the first electrode connection point and the corresponding first wire contact are tightly abutted and form an electrical connection.

[0006] According to an embodiment of the present invention, the flexible electrode connection assembly has a conductive core wire, a wire contact portion, and a positioning core directly disposed on the cylindrical conductor. This results in a relatively simple structure and facilitates rapid and stable cross-electrode electrical conduction and high-density physical fixation and sealing between the cylindrical conductor and the flexible electrode through modular extrusion fitting between the cylindrical conductor and the adapter. The cylindrical conductor and the flexible electrode are inserted together into the cavity of the adapter through the opening of the adapter, allowing the elastic bridging member to press against the first electrode connection point, thereby forming an electrical connection between the first electrode connection point and the first wire contact.

[0007] According to some embodiments of the present invention, the outer periphery of the conductor contact portion of the columnar conductor is further provided with at least one second conductor contact. The conductor portion includes a plurality of mutually insulated conductive core wires. The first conductor contact and the second conductor contact are electrically connected to their respective independent conductive core wires, and the first conductor contact and the second conductor contact are mutually insulated and spaced apart along the circumference of the conductor contact portion.

[0008] According to some embodiments of the present invention, the connection point portion of the flexible electrode is further provided with at least one second electrode connection point, the second electrode connection point being insulated from the first electrode connection point, the second electrode connection point being disposed facing the second wire contact of the columnar conductor, and the elastic bridging member pressing against the side of the second electrode connection point away from the columnar conductor, so that the second electrode connection point and the corresponding second wire contact are electrically connected.

[0009] According to some embodiments of the present invention, along the circumferential direction of the adapter, the first electrode connection point and the second electrode connection point of the flexible electrode are staggered, and the elastic bridging member abuts against the side of the first electrode connection point and the second electrode connection point away from the columnar conductor.

[0010] According to some embodiments of the present invention, the elastic bridging element is an annular insulating spring, and an annular groove is formed on the inner wall of the cavity, and the annular insulating spring is embedded in the annular groove; or the elastic bridging element is an insulating spring sheet, and the insulating spring sheet is disposed on the inner wall of the cavity.

[0011] According to some embodiments of the present invention, the flexible electrode connection assembly further includes: a sealing member, the sealing member abutting against the outer peripheral surface of the columnar conductor and the inner wall of the cavity respectively.

[0012] According to some embodiments of the present invention, along the axial direction of the adapter, the seal is disposed on the side of the wire contact portion adjacent to the opening.

[0013] According to some embodiments of the present invention, the positioning core is coaxially disposed at the end of the wire contact portion, and the cross-sectional area of ​​the positioning core is smaller than the cross-sectional area of ​​the end of the wire contact portion.

[0014] According to some embodiments of the present invention, the connecting lead portion of the flexible electrode includes at least one connecting lead, the distal site portion includes at least one electrode site, the electrode site is used to perform electrical stimulation and / or signal recording on the target tissue, and the distal site portion is electrically connected to the connecting site portion through the connecting lead portion.

[0015] According to some embodiments of the present invention, the flexible electrode has a layered structure, the flexible electrode includes a first insulating layer, a conductive layer and a second insulating layer arranged along the thickness direction; the electrode site, the connecting lead and the first electrode connection site are disposed in the conductive layer; and / or the electrode site and the first electrode connection site are exposed through a window penetrating the first insulating layer and / or the second insulating layer; and / or the auxiliary assembly hole penetrates the first insulating layer and the second insulating layer.

[0016] According to some embodiments of the present invention, the first insulating layer and / or the second insulating layer comprises at least one of polyimide, parylene, polyurethane and silicone; and / or the conductive layer comprises at least one of gold, platinum and iridium.

[0017] According to some embodiments of the present invention, positioning marks are provided on the wire contact portion and / or the flexible electrode.

[0018] According to some embodiments of the present invention, a locking component is provided at the opening of the adapter, the locking component being used to lock and fix the adapter and the columnar conductor.

[0019] According to some embodiments of the present invention, the columnar conductor further includes a conductor connection portion, the conductor connection portion having at least one conductor connection contact point, the conductor connection contact point being electrically connected to the first conductor contact point and / or the second conductor contact point through the conductive core wire.

[0020] According to some embodiments of the present invention, the wire connection portion is in multiple groups, and the wire connection contact point on each group of the wire connection portion is electrically connected to the first wire contact point and the second wire contact point respectively through the corresponding conductive core wire in the wire portion.

[0021] According to a second aspect of the present invention, a flexible electrode system includes: a flexible electrode connection assembly, wherein the flexible electrode connection assembly is the same as the flexible electrode connection assembly described in the first aspect of the present invention; and an implantable stimulator, wherein the implantable stimulator has a stimulation circuit and / or a signal acquisition and recording circuit internally; wherein the wire connection portion of the columnar wire member in the flexible electrode connection assembly is electrically connected to the implantable stimulator to transmit stimulation signals and / or physiological signals between the implantable stimulator and the flexible electrode.

[0022] According to some embodiments of the present invention, the implantable stimulator includes a sealed housing, a feedthrough, and a connector, wherein the wire connection point of the columnar lead is electrically connected to the feedthrough through the connector.

[0023] According to a third aspect of the present invention, a flexible electrode system includes: a flexible electrode connection assembly, wherein the flexible electrode connection assembly is the same as the flexible electrode connection assembly described in the first aspect of the present invention; an external stimulator, wherein the external stimulator is internally provided with a stimulation circuit and / or a signal acquisition and recording circuit; wherein the wire connection portion of the columnar wire member in the flexible electrode connection assembly is electrically connected to the external stimulator to transmit stimulation signals and / or physiological signals between the external stimulator and the flexible electrode.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a flexible electrode connection assembly according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of a flexible electrode connection assembly according to an embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view of part A shown in the center circle; Figure 4 yes Figure 2 Enlarged view of section B shown in the center circle; Figure 5 This is a schematic diagram of a columnar conductor of a flexible electrode connection assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the flexible electrode of the flexible electrode connection assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of a flexible electrode system according to an embodiment of the present invention.

[0026] Figure label: 100. Flexible electrode connection assembly; 1. Columnar lead wire component; 11. Lead wire section; 12. Lead wire contact section; 121. First lead wire contact; 122. Second lead wire contact; 14. Positioning core; 15. Lead wire connection section; 2. Flexible electrode; 21. Connection point section; 211. First electrode connection point; 212. Second electrode connection point; 213. Auxiliary assembly hole; 22. Connecting lead wire section; 23. Distal end point section; 231. Electrode point; 3. Adapter; 31. Cavity; 32. Opening; 4. Elastic bridging component; 5. Sealing component; 6. Locking assembly; 7. Anti-rotation part; 200. Flexible electrode system; 201. Implantable stimulator (external stimulator). Detailed Implementation

[0027] The following is for reference. Figures 1-7 A flexible electrode connection assembly 100 according to an embodiment of the first aspect of the present invention is described.

[0028] like Figures 1-7 As shown, the flexible electrode connection assembly 100 according to a first aspect embodiment of the present invention includes a columnar conductor 1, a flexible electrode 2, and an adapter 3.

[0029] Specifically, the columnar conductor 1 includes at least a conductor portion 11 and a conductor contact portion 12. The conductor portion 11 includes at least one conductive core wire. The outer periphery of the conductor contact portion 12 is provided with at least one first conductor contact 121. Each first conductor contact 121 is electrically connected to the corresponding conductive core wire. The conductor contact portion 12 is provided with a positioning core 14.

[0030] The flexible electrode 2 includes a connection point portion 21, a connecting lead portion 22, and a distal position portion 23 connected in sequence. The connection point portion 21 has a sheet-like structure and is located at the proximal end of the flexible electrode 2. The connection point portion 21 has at least one first electrode connection point 211 and an auxiliary assembly hole 213. The connecting lead portion 22 connects the connection point portion 21 and the distal position portion 23 to realize the electrical connection inside the flexible electrode 2.

[0031] The adapter 3 has a cavity 31, and an opening 32 is formed at one axial end of the adapter 3. The cavity 31 communicates with the outside through the opening 32. At least one elastic bridging member 4 is provided on the inner wall of the cavity 31 of the adapter 3.

[0032] The flexible electrode 2 has a connection point 21 that fits against the outer peripheral surface of the wire contact 12 of the columnar wire component 1. The positioning core 14 passes through the auxiliary assembly hole 213 to form a detachable plug-in positioning fit. The first electrode connection point 211 is set facing the first wire contact 121 and at least partially overlaps with it.

[0033] The wire contact portion 12 and the connection point portion 21 that fits against its outer peripheral surface are inserted into the cavity 31 through the opening 32 of the adapter 3; the elastic bridging member 4 presses against the side of the first electrode connection point 211 away from the columnar wire member 1, so that the first electrode connection point 211 and the corresponding first wire contact 121 are tightly abutted and form an electrical connection.

[0034] For example, in Figure 1 and Figure 2 In the example, the positioning core 14 of the columnar conductor 1 and the positioning engagement of the auxiliary assembly hole 213 of the flexible electrode 2 can quickly achieve the alignment of the connection point 21 of the flexible electrode 2 and the wire contact 12 of the columnar conductor 1 during assembly, ensuring the accurate correspondence between the first electrode connection point 211 and the first wire contact 121, reducing the risk of connection failure caused by alignment deviation, improving assembly efficiency and electrical connection reliability. At the same time, the detachable engagement form also facilitates component maintenance and replacement, improving the flexibility of use.

[0035] During axial feeding, the flexible electrode 2 can be pressed against the outer surface of the columnar lead wire 1 by the elastic bridging member 4, thereby ensuring the flatness of the flexible electrode 2. At the same time, the elastic bridging member 4 makes the first electrode connection position of the flexible electrode 2 press against the first wire contact 121 of the columnar lead wire 1, so that the first electrode connection point 211 and the first wire contact 121 form a stable electrical connection, thereby realizing the stable transmission of stimulation signals and / or physiological signals between the flexible electrode 2 and the columnar lead wire 1.

[0036] Furthermore, by incorporating the elastic bridging component 4, its elastic properties can compensate for dimensional tolerances during assembly, preventing poor contact due to component machining errors. On the other hand, the elastic abutment connection method can accommodate positional shifts caused by micro-movements in the body's tissues after the flexible electrode 2 is implanted, maintaining the stability of the electrical connection, reducing the risk of connection loosening and failure, and ensuring stable operation of electrical stimulation output and physiological electrical signal acquisition. Simultaneously, the elastic bridging component 4 can maintain stable contact between each contact point by relying on its own elasticity when the connection structure deforms due to heat or external force, improving connection reliability and reducing the risk of loosening and poor contact.

[0037] Therefore, the conductive core wire, the wire contact portion 12, and the positioning core 14 are directly provided on the columnar conductor 1, resulting in a relatively simple structure. This facilitates quick and stable cross-electrode electrical conduction and high-density physical fixation and sealing between the columnar conductor 1 and the flexible electrode 2 through modular extrusion fitting between the columnar conductor 1 and the adapter 3. The columnar conductor 1 and the flexible electrode 2 are inserted together into the cavity 31 of the adapter 3 through the opening 32, allowing the elastic bridging member 4 to press against the first electrode connection point 211, thereby forming an electrical connection between the first electrode connection point 211 and the first wire contact 121.

[0038] According to an embodiment of the present invention, the flexible electrode connection assembly 100 has a simple structure, with a conductive core wire, a wire contact portion 12, and a positioning core 14 directly disposed on the columnar conductor 1. This facilitates quick and stable cross-electrode electrical conduction and high-density physical fixation and sealing between the columnar conductor 1 and the flexible electrode 2 through modular compression fitting between the columnar conductor 1 and the adapter 3. The columnar conductor 1 and the flexible electrode 2 are inserted together into the cavity 31 of the adapter 3 through the opening 32, allowing the elastic bridging member 4 to press against the first electrode connection point 211, thereby forming an electrical connection between the first electrode connection point 211 and the first wire contact 121.

[0039] In related technologies, most flexible electrodes are single-function, capable of only transmitting a single signal. Some flexible electrodes can only output electrical stimulation signals and cannot simultaneously acquire physiological electrical signals generated by tissues; others are only used to acquire physiological electrical signals and cannot output electrical stimulation for therapeutic control. To simultaneously achieve electrical stimulation output and physiological signal acquisition, two independent sets of electrode devices are often required, with separate wiring and connection to external equipment. This results in a complex overall system structure, a large number of components, increased implantation volume, and cumbersome surgical procedures. Using multiple sets of electrodes simultaneously can also easily lead to signal crosstalk, affecting the accuracy of signal acquisition and the effect of electrical stimulation, making it difficult to meet the requirements of closed-loop control. Therefore, there is an urgent need for a flexible electrode connection component 100 that can simultaneously achieve multiple signal transmissions and functions.

[0040] According to some embodiments of the present invention, with reference to Figure 5 The outer periphery of the wire contact portion 12 of the columnar wire component 1 is further provided with at least one second wire contact 122. The wire portion 11 includes multiple mutually insulated conductive core wires. The first wire contact 121 and the second wire contact 122 are respectively electrically connected to their respective independent conductive core wires, and the first wire contact 121 and the second wire contact 122 are mutually insulated and spaced apart along the circumference of the wire contact portion 12. For example, the first wire contact 121 transmits stimulation signals through the corresponding conductive core wire, and the second wire contact 122 transmits physiological signals through the corresponding conductive core wire, or vice versa. The first lead wire contact 121 and the second lead wire contact 122 are mutually insulated and spaced apart circumferentially along the lead wire contact portion 12. This allows the two types of signals transmitted by the first lead wire contact 121 and the second lead wire contact 122 to be transmitted simultaneously through independent pathways without interference. This satisfies the closed-loop control requirement of synchronous acquisition of electrical stimulation output and physiological signals, eliminating the need for two independent flexible electrode connection assemblies 100, simplifying the overall structure, reducing the implantation volume, and lowering the difficulty of surgical operation. Furthermore, the first lead wire contact 121 and the second lead wire contact 122 are distributed circumferentially along the lead wire contact portion 12. This not only adapts to the circumferential fitting structure of the sheet-like connection point portion 21 but also makes full use of the circumferential space of the lead wire contact portion 12, increasing the contact density and facilitating the simultaneous transmission of signals through more pathways.

[0041] Furthermore, referring to Figure 6 The flexible electrode 2 is further provided with at least one second electrode connection point 212 on the connection point portion 21. The second electrode connection point 212 is insulated from the first electrode connection point 211. The second electrode connection point 212 is disposed facing the second wire contact 122 of the columnar wire member 1. The elastic bridging member 4 presses against the side of the second electrode connection point 212 away from the columnar wire member 1 so that the second electrode connection point 212 and the corresponding second wire contact 122 form an electrical connection.

[0042] The first electrode connection point 211 and the second electrode connection point 212 are respectively disposed on the sheet-like connection point portion 21 at the proximal end of the flexible electrode 2, and the first wire contact 121 and the second wire contact 122 are disposed at the wire contact portion 12 of the columnar wire member 1. The arrangement of the wire contact portion 12 of the columnar wire member 1 integrates the stimulation signal output path and the physiological signal acquisition path on the same columnar wire member 1. The two types of electrode connection points on the flexible electrode 2, namely the first electrode connection point 211 and the second electrode connection point 212, are insulated from each other, and are electrically connected to the corresponding first wire contact 121 and second wire contact 122. Thus, the two types of signals can be transmitted simultaneously through independent paths without interference. For example, the electrical stimulation signal can be transmitted through the first electrode connection point 211, and the physiological signal can be acquired synchronously through the second electrode connection point 212; no specific limitation is made here.

[0043] Therefore, by connecting the wire contact portion 12 of the columnar wire member 1 to the two types of electrode connection sites on the flexible electrode 2, an electrical connection is achieved. Only one set of flexible electrode connection components 100 is needed to achieve at least two functions at the same time. There is no need to set up two independent sets of flexible electrode connection components 100, which greatly simplifies the overall system structure, reduces the implantation volume, reduces the difficulty of surgical operation, and avoids the signal crosstalk problem caused by the simultaneous use of multiple sets of flexible electrode connection components 100. This improves the accuracy of signal acquisition and the effect of electrical stimulation, and can better meet the needs of closed-loop control.

[0044] Furthermore, referring to Figure 6 Along the circumference of the adapter 3, the first electrode connection point 211 and the second electrode connection point 212 of the flexible electrode 2 are staggered. The elastic bridging member 4 abuts against the side of the first electrode connection point 211 and the second electrode connection point 212 away from the columnar lead member 1, respectively. As a result, the first lead contact 121 and the second lead contact 122 in the corresponding lead contact portion 12 are set separately and will not be stacked in the same radial position. This effectively reduces the overall radial dimension after assembly, which is more in line with the design requirements of miniaturization of implantable devices, reduces the volume after implantation, reduces pressure on normal tissues in the body, and improves the safety and compatibility of the flexible electrode 2 after implantation.

[0045] Furthermore, the elastic bridging component 4 is a ring-shaped insulating spring, and an annular groove is formed on the inner wall of the cavity 31, in which the ring-shaped insulating spring is embedded. The annular groove positions the ring-shaped insulating spring to prevent displacement of the ring-shaped insulating spring along the axial direction of the adapter 3 during the assembly of the columnar conductor 1 into the adapter 3. This facilitates the ring-shaped insulating spring to wrap around and elastically cover the side of the flexible electrode 2 away from the columnar conductor 1 after the columnar conductor 1 and the flexible electrode 2 are inserted into the adapter 3, so as to facilitate a stable electrical connection between the first electrode connection point 211 and the first conductor contact 121, and an electrical connection between the second electrode connection point 212 and the second conductor contact 122.

[0046] Furthermore, the annular insulating spring is an annular inclined coil spring.

[0047] According to some specific embodiments of the present invention, the elastic bridging element 4 is an insulating spring sheet, which is disposed on the inner wall of the cavity 31. Each insulating spring sheet can be independently configured to correspond to a first electrode connection point 211, and elastic pressure can be applied to a single first electrode connection point 211 to ensure that each first electrode connection point 211 receives sufficient clamping force to achieve a stable electrical connection.

[0048] The insulating spring can be arranged in a ring shape, enabling synchronous contact at multiple points in the circumference and effectively increasing the contact area. After the flexible electrode 2 and the cylindrical wire 1 are inserted into the adapter 3, the ring-shaped insulating spring can wrap around and elastically cover the flexible electrode 2 and the cylindrical wire 1 in the circumferential direction, so as to facilitate the electrical connection between the first electrode connection point 211 and the first wire contact 121 through the insulating spring; and / or the electrical connection between the second electrode connection point 212 and the second wire contact 122.

[0049] In addition, both the ring-shaped insulating spring and the insulating sheet have elastic compensation capabilities, which can compensate for the gap changes caused by component assembly tolerances and thermal expansion and contraction; under vibration conditions, they can maintain stable contact pressure and are not prone to contact loosening, signal jumps, or circuit failure.

[0050] According to some embodiments of the present invention, with reference to Figure 2 and Figure 4 The flexible electrode connection assembly 100 further includes a sealing element 5, which abuts against the outer peripheral surface of the cylindrical conductor 1 and the inner wall of the cavity 31. The sealing element 5 can be sleeved on the outer periphery of the cylindrical conductor 1 or disposed on the inner wall of the cavity 31. No specific limitation is made here. The sealing element 5, by tightly fitting against the outer peripheral surface of the cylindrical conductor 1 and the inner wall of the cavity 31, seals the insertion gap. The sealing element 5, relying on its own elasticity to adapt to the insertion and assembly of the cylindrical conductor 1, can compensate for dimensional tolerances of the parts without affecting the normal insertion and removal of the cylindrical conductor 1.

[0051] For example, the sealing element 5 can be a sealing ring sleeved on the cylindrical guide wire 1; or a sealing ring installed on the inner wall of the cavity 31; or the sealing element 5 can be an interference fit surface on the inner wall of the cavity 31. No specific limitation is made here.

[0052] Furthermore, referring to Figure 2 and Figure 4 Along the axial direction of the adapter 3, the seal 5 is located on one side of the wire contact portion 12 adjacent to the opening 32. The seal 5 can seal the gap on the side of the opening 32 of the cavity 31, preventing body fluids, tissue debris, etc. from seeping into the electrical connection area inside the cavity 31 from the opening 32, avoiding short circuits, insulation failures, or contact corrosion caused by liquid accumulation and impurities, and improving the stability and reliability of the electrical connection area during long-term operation inside the body.

[0053] According to some embodiments of the present invention, with reference to Figure 2 , Figure 3 and Figure 5 The positioning core 14 is coaxially disposed at the end of the wire contact portion 12, and the cross-sectional area of ​​the positioning core 14 is smaller than the cross-sectional area of ​​the end of the wire contact portion 12. The coaxial placement of the positioning core 14 at the end of the wire contact portion 12 ensures the coaxiality of the positioning fit, avoids eccentricity and misalignment during assembly, and further improves the positioning accuracy and assembly stability.

[0054] For example, the positioning core 14 is a positioning protrusion that protrudes axially from the end of the wire contact portion 12. The outer diameter of the positioning protrusion is in clearance fit with the diameter of the auxiliary assembly hole 213, which is conducive to achieving radial positioning of the columnar wire component 1 during the pre-assembly stage.

[0055] According to some embodiments of the present invention, with reference to Figure 6 The flexible electrode 2 has a connecting lead portion 22 including at least one connecting lead, and a distal site portion 23 including at least one electrode site 231. The electrode site 231 is used to apply electrical stimulation and / or signal recording to the target tissue. The distal site portion 23 is electrically connected to the connecting site portion 21 through the connecting lead portion 22. The connecting lead portion 22 can conduct the physiological electrical signals acquired by the distal site portion 23 to the connecting site portion 21, and then transmit them to the signal acquisition circuit at the rear end through the columnar lead component 1. Simultaneously, the electrical stimulation signal output by the rear stimulation circuit can also be conducted to the distal site portion 23 through the columnar lead component 1, the connecting site portion 21, and the connecting lead portion 22, and applied to the target tissue, realizing bidirectional synchronous transmission of stimulation signal output and physiological signal acquisition, meeting the signal transmission requirements of closed-loop control therapy. One electrode site 231 can correspond to one electrical stimulation or one signal acquisition, and multiple electrode sites 231 can realize multi-channel synchronous control and acquisition, improving the accuracy of control therapy.

[0056] Furthermore, the flexible electrode 2 has a layered structure, comprising a first insulating layer, a conductive layer, and a second insulating layer arranged along its thickness direction. This layered structure enhances the flexibility of the flexible electrode 2, helps reduce mechanical damage to human tissue, minimizes biological rejection, and ensures stable signal transmission. The conductive layer is sandwiched between the first and second insulating layers, protected on both sides. This prevents accidental leakage or short circuits on either side of the conductive layer and isolates it from external moisture and impurities. Furthermore, the layered structure provides excellent overall flexibility; when the electrode bends and deforms, the two insulating layers share the deformation stress, reducing the risk of breakage due to tension and improving the overall structural stability and lifespan of the flexible electrode 2.

[0057] Electrode point 231, connecting lead, and first electrode connection point 211 are disposed on the conductive layer. The conductive layer integrates electrode point 231, electrode contact, and connecting lead, and electrode point 231 and electrode contact are electrically connected through the connecting lead.

[0058] Electrode site 231 and first electrode connection site 211 are exposed through windows penetrating the first insulating layer and / or the second insulating layer. Only a portion of the conductive layer is exposed to form the electrode contact area (i.e., electrode site 231 and first electrode connection site 211), used to achieve electrical signal interaction; the remaining portion of the conductive layer is completely covered and isolated by the first and second insulating layers. This ensures that the electrode contact area can normally complete signal acquisition or electrical stimulation output, while also providing insulation protection for non-working areas of the conductive layer, preventing leakage and short circuits at non-target locations. Simultaneously, it blocks moisture and corrosive media from intruding into the conductive layer, reducing oxidation and corrosion failure, and improving the safety and long-term stability of the flexible electrode 2.

[0059] Alternatively, the second electrode connection point 212 may also be exposed through a window penetrating the first insulating layer and / or the second insulating layer.

[0060] The auxiliary assembly hole 213 penetrates the first insulating layer and the second insulating layer. The through-hole auxiliary assembly hole 213 of the flexible electrode 2 can cooperate with the positioning core 14 during the assembly process of the flexible electrode 2 to achieve rapid alignment of the flexible electrode 2, which can limit the translation and rotational offset of the flexible electrode 2 and improve the assembly position accuracy.

[0061] Optionally, the auxiliary assembly hole 213 may penetrate only the first and second insulating layers without passing through the conductive layer. This ensures the conductive layer remains intact, preventing damage to the internal conductive layer and avoiding open circuits and impedance abnormalities caused by holes in the conductive layer. Simultaneously, it helps ensure the insulation of the position that mates with the positioning core 14, preventing signal acquisition deviations.

[0062] Optionally, the auxiliary assembly hole 213 penetrates both the first and second insulating layers as well as the conductive layer. This serves to position the first, conductive, and second insulating layers, effectively suppressing interlayer slippage and misalignment, preventing relative displacement between the insulating and conductive layers, and ensuring the assembly position accuracy of the electrode contact area. Although the conductive layer is removed at the opening, the auxiliary assembly hole 213 is a non-conductive working area and will not disrupt the conductive path between the electrode site 231 and the electrode contact and connecting lead. This allows for precise assembly positioning while avoiding signal anomalies caused by interlayer misalignment, improving the overall structural consistency of the assembled flexible electrode 2.

[0063] Furthermore, the first insulating layer and / or the second insulating layer include at least one of polyimide, parylene, polyurethane, and silicone. Polyimide possesses excellent electrical insulation properties, thermal stability, and mechanical strength. The film can be processed to ultra-thin thickness, is resistant to repeated bending, has strong chemical corrosion resistance, can stably isolate the conductive lines of the flexible electrode 2, and its insulation performance does not easily degrade under high-temperature conditions. It can effectively prevent leakage and short circuits, improve the overall structural reliability of the electrode, and is suitable for the precision machining process of the flexible electrode 2. Parylene can form a uniform and dense conformal insulating film through vapor deposition. The film layer is free of pinholes, has an outstanding water vapor barrier effect, high chemical inertness, and good insulation ability. It can fully cover the electrode lines, inhibit the intrusion of water vapor and corrosive media into the electrode interior, reduce the risk of insulation failure, and has good bending performance, making it suitable for the insulating encapsulation of miniaturized flexible electrodes 2. Polyurethane elastomers combine flexibility with a certain degree of tensile strength, exhibiting good deformation adaptability. They are not prone to brittle fracture and detachment when bending or slightly stretched along with the electrode, demonstrating excellent adhesion to the electrode substrate. They also provide good insulation and barrier properties, resist flexural fatigue, buffer deformation stress, prevent delamination between the insulation and conductive layers, and improve the stability of the flexible electrode 2 under repeated deformation. Silicone, on the other hand, is soft, has a low modulus, and excellent deformation flexibility, allowing it to withstand large-angle bending deformations. It offers stable insulation performance, resistance to aging and damp heat, and good biocompatibility. It can protect the conductive areas of the electrode, reducing the risk of insulation layer cracking caused by external bending forces, making it suitable for insulation protection of the flexible electrode 2 in wearable and soft tissue contact scenarios.

[0064] Therefore, the above materials all possess excellent flexibility and bending resistance, and are not prone to cracking or falling off when repeatedly bent with the flexible electrode 2, thus maintaining the structural integrity of the first and second insulating layers; at the same time, they have good electrical insulation properties, avoiding leakage and short circuit problems; the materials have good chemical stability, are resistant to damp heat and environmental corrosion, which can reduce the risk of moisture and impurities entering the electrode, protect the conductive circuit, and improve the overall reliability and service life of the flexible electrode 2.

[0065] The conductive layer includes at least one of gold, platinum, and iridium. Gold exhibits excellent chemical stability, is resistant to oxidation and corrosion, possesses strong electrochemical inertness, excellent conductivity, and good ductility. During repeated bending and deformation of the flexible electrode 2, the conductive layer is less prone to breakage, resulting in stable contact impedance. It is also less prone to electrochemical side reactions, ensuring the stability of signal acquisition or electrical stimulation output, making it suitable for use as the conductive layer in precision flexible electrodes 2. Platinum possesses excellent conductivity and electrochemical stability, strong corrosion resistance, and is not easily corroded in complex environments such as humidity and bodily fluids. It has a wide electrochemical window, low polarization, and can reduce impedance drift between electrode interfaces, resulting in low signal distortion. It can maintain the performance of the conductive layer for a long time, improving the long-term reliability of the flexible electrode 2. Iridium has outstanding resistance to electrochemical corrosion, excellent oxidation resistance, moderate hardness, and good resistance to electrochemical ablation. Under cyclic electrical stimulation conditions, the conductive layer experiences minimal loss. It can form an iridium oxide active layer, effectively enhancing charge injection capability, reducing interfacial impedance, facilitating electrical signal output and acquisition, and extending the service life of the flexible electrode 2. Alloys formed from any one of gold, platinum, and iridium can combine the advantages of conductivity and corrosion resistance of single metals, while adjusting the mechanical properties of the material, improving film adhesion, and alleviating the problem of easy cracking when pure metal films are bent; they can also optimize electrochemical properties, inhibit metal layer migration and peeling, and balance conductivity, electrochemical stability and bending fatigue resistance, making them suitable for the long-term deformation use requirements of flexible electrodes 2.

[0066] Therefore, the aforementioned precious metals and their alloys exhibit excellent electrical conductivity, high electrochemical and chemical stability, and resistance to environmental corrosion. They can maintain the integrity of the conductive path and the stability of the interface impedance under bending deformation conditions, thereby reducing signal drift and material loss and ensuring the reliability of electrical signal acquisition or electrical stimulation output of the flexible electrode 2.

[0067] According to some embodiments of the present invention, positioning marks (not shown) are provided on the wire contact portion 12 and / or the flexible electrode 2. The flexible electrode 2 and the cylindrical wire 1 extend axially into the cavity 31 of the adapter 3 for insertion assembly. The positioning marks can be used to determine whether the flexible electrode 2 and the cylindrical wire 1 are properly inserted relative to the cavity 31 of the adapter 3, thereby realizing the identification and verification of the assembly position, avoiding assembly deviations such as the flexible electrode 2 and the cylindrical wire 1 being inserted too deeply or not properly, reducing the difficulty of judgment in manual assembly, improving assembly consistency, and reducing assembly failure problems caused by abnormal insertion positions.

[0068] According to other embodiments of the present invention, refer to Figure 1 , Figure 2 and Figure 4A locking component 6 is provided at the opening 32 of the adapter 3. The locking component 6 is used to lock and fix the adapter 3 and the cylindrical conductor 1. After the flexible electrode 2 and the cylindrical conductor 1 are inserted into the adapter 3, the locking component 6 is used to lock the adapter 3 and the cylindrical conductor 1. This can limit the axial movement between the flexible electrode 2, the cylindrical conductor 1 and the adapter 3, and prevent loosening and displacement due to vibration or external pulling force, which helps to improve the structural stability of the flexible electrode 2 assembly.

[0069] For example, the locking component 6 can be constructed as a threaded locking structure, with an internal thread provided at the end of the adapter 3 away from the opening 32. The locking component 6 is screwed into the adapter 3 through threaded engagement. During the tightening process, the end of the locking component 6 can abut against the surface of the columnar guide member 1 to achieve axial locking and fixation; or the locking component 6 can also be constructed as a radial clamping locking structure, which is fixed by clamping the outer periphery of the columnar guide member 1. The specific structural form can be adjusted according to the actual assembly requirements, and is not limited here.

[0070] In addition, it can be used in conjunction with the positioning mark to determine the position of the assembly before locking, ensuring that the assembly position is accurate before locking and improving the overall assembly accuracy and connection reliability.

[0071] According to some embodiments of the present invention, with reference to Figure 3 and Figure 5 The cavity 31 of the adapter 3 may be provided with an anti-rotation part 7 at its proximal end, and the positioning core 14 of the cylindrical wire member 1 can engage with the anti-rotation part 7 after being inserted into place. Optionally, the cross-section of both the anti-rotation part 7 and the positioning core 14 of the cylindrical wire member 1 can be non-circular, and the positioning core 14 of the cylindrical wire member 1 can engage with the anti-rotation part 7 after being inserted into place, so that the cylindrical wire member 1 and the adapter 3 can rotate relative to each other in the circumference after being inserted into place.

[0072] According to other embodiments of the present invention, refer to Figure 1 , Figure 2 and Figure 5The columnar lead wire component 1 also includes a lead wire connection portion 15, which has at least one lead wire connection contact point. The lead wire connection contact point is electrically connected to the first lead wire contact 121 and the second lead wire contact 122 through a conductive core wire. The first lead wire contact 121 and the second lead wire contact 122 are located on one side of the flexible electrode 2 and are used to receive the electrical signal transmitted from the electrode point 231 of the flexible electrode 2. The conductive core wire establishes a conductive path between the first lead wire contact 121 and the second lead wire contact 122 and the lead wire connection contact point, so as to realize the outward output of the electrical signal of the flexible electrode 2. Compared with direct hard contact, the use of conductive core wire for conduction has a certain deformation margin, which can buffer the positional displacement caused by assembly errors and vibration, and reduce the risk of contact failure. At the same time, the conductive core wire can realize long-distance signal transmission, and the lead wire connection contact point can be arranged in a position that is convenient for external connection of the columnar lead wire component 1, which facilitates subsequent connection with external circuits and plug-in components to realize the output of electrical stimulation signals or the acquisition and transmission of physiological signals.

[0073] Furthermore, the lead wire connection portion 15 comprises multiple groups, and the lead wire connection points on each group of lead wire connection portions 15 are electrically connected to the first lead wire contact 121 and the second lead wire contact 122 respectively through the corresponding conductive core wires within the lead wire portion 11. The multiple groups of lead wire connection portions 15 can respectively adapt to the signal splitting transmission requirements of the multi-channel flexible electrode 2, avoiding crosstalk between multiple signal paths, ensuring that the transmission of each electrical signal is independent, further improving the accuracy of multi-channel signal acquisition and stimulation output, and adapting to the treatment needs in complex control scenarios.

[0074] Reference Figure 7 According to a second aspect of the present invention, a flexible electrode system 200 includes: a flexible electrode connection assembly 100, which is the same as the flexible electrode connection assembly 100 described in the first aspect of the present invention; an implantable stimulator 201, which has a stimulation circuit and / or a signal acquisition and recording circuit inside; wherein, the wire connection portion 15 of the columnar wire member 1 in the flexible electrode connection assembly 100 is electrically connected to the implantable stimulator 201 to transmit stimulation signals and / or physiological signals between the implantable stimulator 201 and the flexible electrode 2.

[0075] According to an embodiment of the present invention, the flexible electrode system 200 has a simple structure, reducing the number of complex multi-layered transition structures and welding points, thus lowering the manufacturing difficulty of the flexible electrode system 200 and the alignment difficulty during assembly. Simultaneously, a reliable and stable electrical connection between the flexible electrode connection component 100 and the implantable stimulator 201 ensures continuous signal conduction between the electrode site 231 and the implantable stimulator 201, effectively suppressing problems such as contact impedance drift and open circuits. Whether for tissue electrical stimulation output or physiological electrical signal acquisition, the continuity and consistency of signal transmission are guaranteed. Therefore, the overall system component composition is simplified, reducing sources of failure, and ensuring stable performance of the flexible electrode system 200 even under bending, vibration, and body fluid immersion environments, thereby improving the overall reliability and service life of the flexible electrode system 200.

[0076] According to some embodiments of the present invention, the implantable stimulator 201 includes a feedthrough and a connector. The wire connection point of the columnar lead 1 is electrically connected to the feedthrough through the connector. The lead connection portion 15 serves as an intermediate transition point, realizing the transition connection between the conductive core wire and the feedthrough, reducing the assembly stress caused by the direct connection between the feedthrough and the flexible electrode 2, reducing the risk of disconnection under vibration and deformation conditions, and ensuring the stability of the electrical stimulation output and physiological signal acquisition pathway of the entire flexible electrode system 200.

[0077] Reference Figure 7 According to a third aspect of the present invention, a flexible electrode system 200 includes: a flexible electrode connection assembly 100, which is the same as the flexible electrode connection assembly 100 described in the first aspect of the present invention; an external stimulator 201, which has a stimulation circuit and / or a signal acquisition and recording circuit inside; wherein, the wire connection portion 15 of the columnar wire member 1 in the flexible electrode connection assembly 100 is electrically connected to the external stimulator 201 to transmit stimulation signals and / or physiological signals between the external stimulator 201 and the flexible electrode 2.

[0078] According to an embodiment of the flexible electrode system 200 of the present invention, the flexible electrode 2 is electrically connected to the external stimulator 201 via a columnar lead 1. For example, the electrical stimulation signal output by the external stimulator 201 can be transmitted to the flexible electrode 2 via the external stimulator 201 and the columnar lead 1, and the electrode site 231 of the flexible electrode 2 acts on the target tissue to achieve electrical stimulation therapy; or, the tissue physiological electrical signal collected by the flexible electrode 2 can also be transmitted back to the external stimulator 201 via the columnar lead 1 to complete signal recording and analysis. The flexible electrode system 200 places the external stimulator 201 outside the body, eliminating the need for implanting a large circuit unit, simplifying the structure of the flexible electrode connection assembly 100, reducing the implantation volume and surgical difficulty, facilitating debugging, parameter adjustment and equipment maintenance, and improving the safety and practicality of the flexible electrode system 200.

[0079] Other configurations and operations of the flexible electrode connection assembly 100 and the flexible electrode system 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0080] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0082] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0083] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flexible electrode connection assembly (100), characterized in that, include: A columnar conductor (1) includes at least a conductor portion (11) and a conductor contact portion (12). The conductor portion (11) includes at least one conductive core wire. The outer periphery of the conductor contact portion (12) is provided with at least one first conductor contact (121). Each first conductor contact (121) is electrically connected to the corresponding conductive core wire. The conductor contact portion (12) is provided with a positioning core (14). The flexible electrode (2) includes a connection point portion (21), a connection lead portion (22), and a distal position portion (23) connected in sequence. The connection point portion (21) has a sheet-like structure and is located at the proximal end of the flexible electrode (2). The connection point portion (21) is provided with at least one first electrode connection point (211) and the connection point portion (21) is formed with an auxiliary assembly hole (213). The connection lead portion (22) is connected between the connection point portion (21) and the distal position portion (23) to realize the electrical connection inside the flexible electrode (2). The adapter (3) has a cavity (31) and an opening (32) is formed at one axial end of the adapter (3). The cavity (31) communicates with the outside through the opening (32). At least one elastic bridging member (4) is provided on the inner wall of the cavity (31) of the adapter (3). Wherein, the connection point (21) of the flexible electrode (2) is attached to the outer peripheral surface of the wire contact (12) of the columnar wire (1), the positioning core (14) is inserted into the auxiliary assembly hole (213) to form a detachable plug-in positioning fit, and the first electrode connection point (211) is disposed facing the first wire contact (121) and at least partially overlaps with it. The wire contact portion (12) and the connection point portion (21) that is attached to its outer peripheral surface are inserted into the cavity (31) through the opening (32) of the adapter (3); the elastic bridge member (4) presses against the side of the first electrode connection point (211) away from the columnar wire member (1) so that the first electrode connection point (211) and the corresponding first wire contact (121) are tightly abutted and form an electrical connection.

2. The flexible electrode connection assembly (100) according to claim 1, characterized in that, The outer periphery of the conductor contact portion (12) of the columnar conductor (1) is further provided with at least one second conductor contact (122). The conductor portion (11) includes multiple mutually insulated conductive core wires. The first conductor contact (121) and the second conductor contact (122) are electrically connected to their respective independent conductive core wires. The first conductor contact (121) and the second conductor contact (122) are mutually insulated and spaced apart along the circumference of the conductor contact portion (12).

3. The flexible electrode connection assembly (100) according to claim 2, characterized in that, The flexible electrode (2) is further provided with at least one second electrode connection point (212) on the connection point portion (21). The second electrode connection point (212) is insulated from the first electrode connection point (211). The second electrode connection point (212) is disposed facing the second wire contact (122) of the columnar conductor (1). The elastic bridging member (4) presses against the side of the second electrode connection point (212) away from the columnar conductor (1) so that the second electrode connection point (212) and the corresponding second wire contact (122) form an electrical connection.

4. The flexible electrode connection assembly (100) according to claim 3, characterized in that, Along the circumference of the adapter (3), the first electrode connection point (211) and the second electrode connection point (212) of the flexible electrode (2) are staggered, and the elastic bridging member (4) abuts against the side of the first electrode connection point (211) and the second electrode connection point (212) away from the columnar conductor (1).

5. The flexible electrode connection assembly (100) according to any one of claims 1-4, characterized in that, The elastic bridging element (4) is a ring-shaped insulating spring, and the inner wall of the cavity (31) has a ring groove, in which the ring-shaped insulating spring is fitted; or, The elastic bridging element (4) is an insulating spring sheet, which is disposed on the inner wall of the cavity (31).

6. The flexible electrode connection assembly (100) according to any one of claims 1-4, characterized in that, Also includes: The sealing element (5) abuts against the outer peripheral surface of the columnar conductor (1) and the inner wall of the cavity (31).

7. The flexible electrode connection assembly (100) according to claim 6, characterized in that, Along the axial direction of the adapter (3), the seal (5) is provided on the side of the wire contact portion (12) adjacent to the opening (32).

8. The flexible electrode connection assembly (100) according to claim 1, characterized in that, The positioning core (14) is coaxially disposed at the end of the wire contact portion (12), and the cross-sectional area of ​​the positioning core (14) is smaller than the cross-sectional area of ​​the end of the wire contact portion (12).

9. The flexible electrode connection assembly (100) according to claim 1, characterized in that, The flexible electrode (2) includes at least one connecting lead in its connecting lead portion (22), and the distal site portion (23) includes at least one electrode site (231). The electrode site (231) is used to perform electrical stimulation and / or signal recording on the target tissue. The distal site portion (23) is electrically connected to the connecting site portion (21) through the connecting lead portion (22).

10. The flexible electrode connection assembly (100) according to claim 9, characterized in that, The flexible electrode (2) has a layered structure, and the flexible electrode (2) includes a first insulating layer, a conductive layer and a second insulating layer arranged along the thickness direction; The electrode site (231) and the connection point (211) of the connecting lead to the first electrode are disposed in the conductive layer; and / or, The electrode site (231) and the first electrode connection site (211) are exposed through windows penetrating the first insulating layer and / or the second insulating layer; and / or, The auxiliary assembly hole (213) penetrates the first insulating layer and the second insulating layer.

11. The flexible electrode connection assembly (100) according to claim 10, characterized in that, The first insulating layer and / or the second insulating layer comprises at least one of polyimide, parylene, polyurethane, and silicone; and / or, The conductive layer includes at least one of gold, platinum, and iridium.

12. The flexible electrode connection assembly (100) according to any one of claims 1-4, characterized in that, Positioning marks are provided on the wire contact portion (12) and / or the flexible electrode (2).

13. The flexible electrode connection assembly (100) according to claim 1, characterized in that, The adapter (3) has a locking component (6) at the opening (32) for locking and fixing the adapter (3) and the columnar conductor (1).

14. The flexible electrode connection assembly (100) according to any one of claims 2-4, characterized in that, The columnar conductor (1) further includes a conductor connection portion (15), which is provided with at least one conductor connection contact point. The conductor connection contact point is electrically connected to the first conductor contact point (121) and / or the second conductor contact point (122) through the conductive core wire.

15. The flexible electrode connection assembly (100) according to claim 14, characterized in that, The wire connection part (15) is in multiple groups, and the wire connection point on each group of the wire connection part (15) is electrically connected to the first wire contact (121) and the second wire contact (122) respectively through the corresponding conductive core wire in the wire part (11).

16. A flexible electrode system (200), characterized in that, include: Flexible electrode connection assembly (100), wherein the flexible electrode connection assembly (100) is any one of claims 1-15. An implantable stimulator (201) is provided with a stimulation circuit and / or a signal acquisition and recording circuit inside; wherein, the wire connection part (15) of the columnar wire member (1) in the flexible electrode connection assembly (100) is electrically connected to the implantable stimulator (201) to transmit stimulation signals and / or physiological signals between the implantable stimulator (201) and the flexible electrode (2).

17. The flexible electrode system (200) according to claim 16, characterized in that, The implantable stimulator (201) includes a sealed housing, a feedthrough, and a connector. The wire connection point of the columnar lead (1) is electrically connected to the feedthrough through the connector.

18. A flexible electrode system (200), characterized in that, include: Flexible electrode connection assembly (100), wherein the flexible electrode connection assembly (100) is any one of claims 1-15. An external stimulator (201) is provided with a stimulation circuit and / or a signal acquisition and recording circuit inside; wherein, the wire connection part (15) of the columnar wire member (1) in the flexible electrode connection assembly (100) is electrically connected to the external stimulator (201) to transmit stimulation signals and / or physiological signals between the external stimulator (201) and the flexible electrode (2).

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