Vertebral-based nerve ablation device

Abstract

The invention discloses a vertebral-based nerve ablation device. The vertebral-based nerve ablation device comprises a puncture assembly, a cannula assembly and an ablation assembly. Wherein the cannula assembly is detachably connected to the puncture assembly, the cannula assembly comprises a filling tube, a filling tube fixing piece, an adjusting handle and a matched limiting piece, the filling tube is fixedly connected to the filling tube fixing piece, and a lining core is arranged in the filling tube; the adjusting handle comprises a withdrawing handle and a lining core handle, the withdrawing handle is in threaded connection with the filling pipe fixing piece, and the lining core handle is fixedly connected with the lining core; the matching limiting piece is rotatably connected to the adjusting handle, and the sleeve assembly is detachably connected to the puncture assembly through the matching limiting piece. The ablation assembly comprises an ablation electrode and an electrode handle, the ablation electrode penetrates through the filling tube, and the electrode handle is rotatably connected to the sleeve assembly. The ablation device solves the problems that the long-term conservative treatment effect of chronic lumbago is poor, and when chronic lumbago is treated through methods such as repeated attack, invasive treatment and the like, stiffness of the waist and the back of a patient is likely to happen, and movement of the patient is limited.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a vertebral-basal nerve ablation device. Background Art

[0002] Chronic low back pain is a common musculoskeletal disease and one of the main causes of disability. Currently, the treatment of chronic low back pain is mainly divided into conservative treatment and invasive treatment. Conservative treatment is prone to repeated attacks and the effect is not obvious. After invasive treatments such as total disc replacement or lumbar fusion, the patient's pain and function are improved in a short period of time, but the back and waist are prone to stiffness and significant limitation of movement. Summary of the invention

[0003] The main purpose of the present invention is to provide a vertebral base nerve ablation device to at least solve the problem that long-term conservative treatment has repeated attacks and has no obvious effect, and that invasive treatment methods such as total disc replacement or lumbar fusion in the treatment of chronic low back pain easily cause patients to experience low back stiffness and limited movement.

[0004] According to one aspect of the present invention, a vertebral base nerve ablation device is provided, comprising:

[0005] The puncture assembly comprises a needle core component and a needle tube component. When the puncture assembly is in operation, the needle core component is inserted into the needle tube component;

[0006] A sleeve assembly, wherein the sleeve assembly is detachably connected to the puncture assembly, the sleeve assembly comprises a filling tube, a filling tube fixing part, an adjustment handle and a matching limiter, the filling tube is fixedly connected to the filling tube fixing part, and when the sleeve assembly is working, a liner core is arranged inside the filling tube; the adjustment handle comprises a withdrawal handle and a liner core handle, the withdrawal handle is threadedly connected to the filling tube fixing part, and the liner core handle is fixedly connected to the liner core; the matching limiter is rotatably connected to the withdrawal handle, and the sleeve assembly is detachably connected to the puncture assembly via the matching limiter;

[0007] The ablation component comprises an ablation electrode and an electrode handle, wherein the ablation electrode is fixedly connected to the electrode handle. When the ablation electrode is working, the ablation electrode is inserted into the filling tube, and the electrode handle is connected to the sleeve assembly.

[0008] Furthermore, the mating limiter includes an axial mating limiter and a radial mating limiter, the axial mating limiter is connected to the filling tube fixing member via a first connecting member, the axial mating limiter is rotatably connected to the first connecting member, and the filling tube fixing member is threadedly connected to the first connecting member.

[0009] Furthermore, the filling tube fixing member includes a filling handle and a guide rail, the filling handle is arranged in the guide rail and extends along the length direction of the guide rail, the filling handle has a first transmission tooth protruding from the outer surface of the guide rail, and the guide rail is threadedly connected to the first connecting member.

[0010] Furthermore, the withdrawal handle includes a withdrawal adjustment piece and a sleeve, the withdrawal adjustment piece is fixedly connected to the sleeve, the inner wall of the sleeve is provided with a second transmission tooth, and the second transmission tooth is engaged with the first transmission tooth of the filling handle so that when the withdrawal handle is rotated, the filling handle is driven to slide in the guide rail along the length direction of the guide rail.

[0011] Furthermore, an end cover is provided between the radial matching limiter and the sleeve, one end of the end cover is threadedly connected to the radial matching limiter, and the other end is buckled with the sleeve.

[0012] Furthermore, a limiting fitting is provided between the liner core handle and the sleeve, one end of the limiting fitting is fixedly connected to the guide rail, and the other end is detachably connected to the liner core handle, and the limiting fitting is used to limit the retraction position of the filling tube.

[0013] Furthermore, the sleeve assembly also includes a limiting fitting, the electrode handle includes a handle body, a second connecting piece, a handle buckle and a handle tail sleeve, one end of the handle body is threadedly connected to the second connecting piece, the other end of the handle body is threadedly connected to the handle tail sleeve, the handle buckle is rotatably connected to the handle body through the second connecting piece; the handle buckle can be rotated relative to the handle body, and when the ablation assembly is working, the handle buckle is detachably connected to the limiting fitting; the handle tail sleeve is used to fix external cables.

[0014] Furthermore, the ablation electrode includes a working electrode and a loop electrode, the handle body is provided with a handle chamber, the handle chamber is provided with a limit ring, a wire crimping tube and a bridging wire 8, the limit ring is used to limit the loop electrode, the bridging wire 8 is used to connect the wire core of an external cable, and the wire crimping tube is used to crimp and fix the working electrode and the wire core of the external cable.

[0015] Furthermore, the ablation electrode includes at least one working electrode and a loop electrode corresponding to the working electrode one by one, the working electrode is inserted into the loop electrode, the surface of the working electrode is provided with an inner sleeve, and the surface of the loop electrode is provided with an outer sleeve; the working electrode includes a working electrode tube and an electrode head, and the electrode head is provided with a temperature sensor.

[0016] Furthermore, the needle tube component includes a needle tube handle and a needle tube, and the needle tube handle is fixedly connected to the needle tube; the needle core component includes a needle core handle and a needle core, and the needle core handle is fixedly connected to the needle core; when the puncture assembly is working, the needle core handle is detachably connected to the needle tube handle; a puncture part is provided at the end of the needle core, and when the needle core is inserted into the needle tube, the puncture part is located outside the needle tube.

[0017] In the present invention, by designing a vertebral nerve ablation device with a puncture component, a cannula component and an ablation component for use together, the connection time of puncture, channel establishment and ablation during nerve ablation of the vertebral nerve can be improved, and the ablation efficiency of the vertebral nerve can be improved. By ablation of the vertebral nerve, the dependence of musculoskeletal diseases on traditional invasive treatment methods can be reduced, thereby reducing the risk of stiffness and limited movement of the waist and back. The ablation electrode includes at least one working electrode and a loop electrode corresponding to the working electrode, which can realize multi-pole independent control. When special-shaped ablation is required, the accuracy of ablation can be improved by multi-pole independent control; the working electrode tube and the loop electrode of the working electrode of the present application are provided with cutting lines, so that the ablation electrode has the function of compliant bending, which can match the needs of different surgical paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A three-dimensional structural diagram of a vertebral base nerve ablation device disclosed in an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a sleeve assembly disclosed in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of an electrode handle disclosed in an embodiment of the present invention;

[0022] Figure 4 A cross-sectional view of an electrode handle disclosed in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of a first ablation electrode disclosed in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a second ablation electrode disclosed in an embodiment of the present invention;

[0025] Figure 7 A cross-sectional view of an ablation electrode disclosed in an embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the puncture assembly disclosed in an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of a cutting pattern disclosed in an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of another cutting pattern disclosed in an embodiment of the present invention;

[0029] Fig.11 It is a structural schematic diagram of a sleeve assembly in a rotational withdrawal manner disclosed in an embodiment of the present invention;

[0030] Fig.12 A cross-sectional view of a sleeve assembly in a rotational withdrawal manner disclosed in an embodiment of the present invention;

[0031] Fig.13 It is a schematic diagram of the structure of the rotating retracting component disclosed in an embodiment of the present invention;

[0032] Fig.14 It is a structural schematic diagram of a sleeve assembly in a straight pull-back manner disclosed in an embodiment of the present invention;

[0033] Fig.15 A cross-sectional view of an electrode handle of an ablation assembly of another structure disclosed in an embodiment of the present invention;

[0034] Fig.16 A cross-sectional view of an ablation electrode of an ablation assembly of another structure disclosed in an embodiment of the present invention.

[0035] The above drawings include the following reference numerals:

[0036] 10. Puncture assembly; 11. Needle handle; 111. Limiting part; 12. Needle; 13. Needle core handle; 14. Needle core; 141. Puncture part; 20. Sleeve assembly; 21. Filling tube; 211. Lining core; 22. Filling tube fixing piece; 221. Filling handle; 2211. First transmission gear; 222. Guide rail; 23. Adjustment handle; 231. Retraction handle; 2311. Retraction adjustment piece; 2312. Sleeve; 2313. Second transmission gear; 232. Lining core handle; 233. Limit fitting piece; 24. Matching limit piece; 240. End cover; 241. Axial matching limit piece; 242. Radial matching limit piece; 25. First connecting piece; 26. Rotational retraction piece; 261. Rotational base; 262. Rotating nut; 263, rotating limit buckle; 264, positioning piece; 2641, limit opening; 27, first liner core handle; 28, filling tube handle; 29, straight pull retraction component; 30, ablation assembly; 31, ablation electrode; 311, working electrode; 3111, working electrode tube; 3112, electrode head; 3113, temperature sensor; 3114, temperature sensor cable; 312, return electrode; 313, inner sleeve; 314, outer sleeve; 315, internal insulation; 32, electrode handle; 321, handle body; 322, second connecting piece; 323, handle buckle; 324, handle tail sleeve; 325, handle chamber; 326, limit ring; 327, wire pressing tube; 328, bridge wire; 40, external cable. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0040] See also Figures 1 to 10 As shown, according to an embodiment of the present application, a vertebral nerve ablation device is provided, including a puncture assembly 10, a sleeve assembly 20 and an ablation assembly 30. The puncture assembly 10 includes a needle core component and a needle tube component. When the puncture assembly 10 is working, the needle core component is inserted into the needle tube component. The sleeve assembly 20 is detachably connected to the puncture assembly 10, and the sleeve assembly 20 includes a filling tube 21, a filling tube fixing part 22, an adjustment handle 23 and a matching limiter 24. The filling tube 21 is fixedly connected to the filling tube fixing part 22. When the sleeve assembly 20 is working, a liner 211 is arranged inside the filling tube 21; the adjustment handle 23 includes a retraction handle 231 and a liner core handle 232. The retraction handle 231 is threadedly connected to the filling tube fixing part 22, and the liner core handle 232 is fixedly connected to the liner core 211; the matching limiter 24 is rotatably connected to the retraction handle 231, and the sleeve assembly 20 is detachably connected to the puncture assembly 10 through the matching limiter 24. The ablation assembly 30 includes an ablation electrode 31 and an electrode handle 32 . The ablation electrode 31 is fixedly connected to the electrode handle 32 . When the ablation electrode 31 is working, the ablation electrode 31 is inserted into the filling tube 21 , and the electrode handle 32 is connected to the sleeve assembly 20 .

[0041] It can be understood that when using the vertebral nerve ablation device for surgery, first, a channel to enter the bone tissue is established at the pre-positioned puncture position through the puncture assembly 10, and the needle core component of the puncture assembly 10 is used to puncture into the bone tissue. Then, the needle core component is removed from the needle tube component, and the filling tube 21 of the sleeve assembly 20 is inserted into the needle tube component of the puncture assembly 10. The matching limiter 24 of the sleeve assembly 20 is connected to the needle tube component, and a channel to reach the target point is established through the filling tube 21 and the liner 211 of the sleeve assembly 20. Then, the liner 211 and the liner handle 232 are separated from the sleeve assembly 20 through the liner handle 232, and the ablation assembly 30 is connected to the sleeve assembly 20. The ablation electrode 31 of the ablation assembly 30 enters the target position, and the filling tube 21 of the sleeve assembly 20 is retracted by the retraction handle 231. After the effective working position of the ablation electrode 31 is exposed, the device is started for ablation treatment.

[0042] In this embodiment, by integrating the puncture assembly 10, the sleeve assembly 20 and the ablation assembly 30 on the same device, nerve puncture, channel establishment and ablation are achieved in one, which can simplify the process of percutaneous nerve ablation surgery and improve the efficiency of the surgery. The puncture assembly 10 can accurately establish a channel to enter the bone tissue at a predetermined position, and the sleeve assembly 20 further stabilizes the channel through the filling tube 21 and the liner core 211, ensuring that the ablation electrode 31 can smoothly reach the target position, thereby improving the accuracy and safety of the surgery. The design of the adjustment handle 23 allows the doctor to adjust the filling tube 21 to expose the effective working part of the ablation electrode 31, which can adapt to different surgical needs. At the same time, the rotatable connection between the electrode handle 32 and the sleeve assembly 20 also provides additional flexibility, so that the ablation electrode 31 can be more accurately positioned at the target position. This embodiment makes the operation of the ablation device easier through modular design and detachable connection, and also reduces the risks during the operation. The components can be quickly replaced or adjusted to adapt to changes during the operation to ensure the success and safety of the operation. The design of the ablation assembly 30 ensures that the ablation electrode 31 can act on the target position accurately and effectively, thereby improving the effect of vertebral base ablation.

[0043] Optionally, the liner core 211 is composed of an alloy wire and a reinforcement tube, and the alloy wire and the reinforcement tube are fixedly connected, and the connection method includes crimping, welding or gluing, etc. In this embodiment, the liner core 211 forms a solid internal structure through the fixed connection of the alloy wire and the reinforcement tube, which improves the strength and stability of the liner core and enables it to withstand greater external force and pressure.

[0044] Furthermore, the mating limiter 24 includes an axial mating limiter 241 and a radial mating limiter 242. The axial mating limiter 241 is connected to the filling tube fixing member 22 via a first connecting member 25. The axial mating limiter 241 is threadedly connected to the first connecting member 25. The filling tube fixing member 22 is rotatably connected to the first connecting member 25.

[0045] refer to Figure 2 As shown, one end of the first connector 25 is provided with a protruding structure for clamping with the axial matching stopper 241, and the other end is provided with a threaded structure for threaded connection with the filling tube fixing member 22. The first connector 25 can not only provide a high connection strength, but also effectively disperse and transfer stress. The threaded connection method enhances the firmness and reliability of the connection. The threaded connection has self-locking properties, can resist external axial forces, and prevent the filling tube fixing member 22 and the first connector 25 from loosening.

[0046] Further, the filling tube fixing member 22 includes a filling handle 221 and a guide rail 222. The filling handle 221 is disposed in the guide rail 222 and extends along the length direction of the guide rail 222. The filling handle 221 has a first transmission tooth 2211 protruding from the outer surface of the guide rail 222. The guide rail 222 is threadedly connected to the first connecting member 25. Figure 2 It can be known that the guide rail 222 has a threaded structure, and the guide rail 222 matches the threaded structure of the first connecting member 25 through its own threaded structure to achieve threaded connection.

[0047] Furthermore, the withdrawal handle 231 includes a withdrawal adjustment piece 2311 and a sleeve 2312, the withdrawal adjustment piece 2311 is fixedly connected to the sleeve 2312, and the inner wall of the sleeve 2312 is provided with a second transmission tooth 2313, and the second transmission tooth 2313 is engaged with the first transmission tooth 2211 of the filling handle 221, so that when the withdrawal handle 231 is rotated, it drives the filling handle 221 to slide in the guide rail 222 along the length direction of the guide rail 222. It can be seen that because the withdrawal adjustment member 2311 and the sleeve 2312 are fixed together, when the withdrawal adjustment member 2311 is rotated, the withdrawal adjustment member 2311 will drive the sleeve 2312 to rotate together, because the second transmission tooth 2313 on the inner wall of the sleeve 2312 is engaged with the first transmission tooth 2211 of the filling handle 221, and gear transmission can be realized. Therefore, the rotation of the sleeve 2312 will drive the filling handle 221 to slide in the guide rail 222, and the filling tube 21 is fixed on the filling handle 221, so the filling tube 21 will also move in the axial direction of the sleeve with the filling handle 221, thereby realizing the withdrawal of the filling tube 21.

[0048] In this embodiment, since the retraction adjustment member 2311 is fixedly connected to the sleeve 2312, and the sleeve 2312 realizes gear transmission with the first transmission tooth 2211 of the filling handle 221 through the second transmission tooth 2313, the axial movement of the filling handle 221 can be accurately controlled by rotating the retraction adjustment member 2311, so that the filling tube 21 can be retracted more efficiently. The fixed connection between the stopper 24 and the sleeve 2312 ensures the stability and accuracy of the filling tube 21 during the retraction process.

[0049] Furthermore, an end cap 240 is provided between the radial matching stopper 242 and the sleeve 2312, one end of the end cap 240 is threadedly connected to the radial matching stopper 242, and the other end is buckled with the sleeve 2312. By providing the end cap 240 to connect the radial matching stopper 242 and the sleeve 2312, the radial matching stopper 242 can be fixed and the exposed part between the radial matching stopper 242 and the sleeve 2312 can be covered, which not only improves the structural stability of the device, but also improves the aesthetics of the device.

[0050] Furthermore, a limiting fitting 233 is provided between the core handle 232 and the sleeve 2312. One end of the limiting fitting 233 is fixedly connected to the guide rail 222, and the other end is detachably connected to the core handle 232. The limiting fitting 233 is used to limit the retraction position of the filling tube 21. When using the ablation assembly 30 for ablation, the filling tube 21 needs to be retracted to a specific position to expose the effective working part of the ablation assembly 30. By providing the limiting fitting 233, the retraction position of the filling tube 21 can be accurately controlled to avoid affecting the operation due to excessive retraction of the filling tube 21. The limiting fitting 233 is detachably connected to the core handle 232, so that the core handle 232 can be separated from the limiting fitting 233 after the channel to the target point is established. The ablation assembly 30 can be connected to the sleeve assembly 20 more quickly to perform subsequent ablation steps, thereby improving the efficiency of the operation.

[0051] Furthermore, the electrode handle 32 includes a handle body 321, a second connecting piece 322, a handle buckle 323 and a handle tail sleeve 324. One end of the handle body 321 is threadedly connected to the second connecting piece 322, and the other end of the handle body 321 is threadedly connected to the handle tail sleeve 324. The handle buckle 323 is rotatably connected to the handle body 321 through the second connecting piece 322; the handle buckle 323 can rotate relative to the handle body 321, and when the ablation assembly 30 is working, the handle buckle 323 is detachably connected to the limiting fitting 233; the handle tail sleeve 324 is used to fix the external cable 40.

[0052] Furthermore, the ablation electrode 31 includes a working electrode 311 and a return electrode 312, and the handle body 321 is provided with a handle chamber 325, and the handle chamber 325 is provided with a limit ring 326, a wire crimping tube 327 and a bridge wire 328, the limit ring 326 is used to limit the return electrode 312, the bridge wire 328 is used to connect the wire core of the external cable 40, and the wire crimping tube 327 is used to crimp and fix the working electrode 311 and the wire core of the external cable 40. By providing the limit ring 326 in the handle chamber 325, the return electrode 312 can be effectively limited to prevent it from unnecessary movement or deviation during the operation, thereby enhancing the overall structural stability of the ablation electrode 31 and ensuring the accuracy and safety of the operation. By crimping and fixing the working electrode 311 and the wire core of the external cable 40 with the wire crimping tube 327, the crimping between the working electrode 311 and the wire core of the external cable 40 can be made more secure, which helps prevent the working electrode 311 and the wire core from loosening or breaking due to force during the operation, thereby ensuring that the ablation electrode 31 can work continuously and stably.

[0053] Furthermore, the ablation electrode 31 includes at least one working electrode 311 and a loop electrode 312 corresponding to the working electrode 311 one by one, the working electrode 311 is inserted into the loop electrode 312, the surface of the working electrode 311 is provided with an inner sleeve 313, and the surface of the loop electrode 312 is provided with an outer sleeve 314; the working electrode 311 includes a working electrode tube 3111 and an electrode head 3112, the electrode head 3112 is provided with a temperature sensor 3113, and the temperature sensor 3113 is fixedly connected to the cable, and the connection method includes welding, crimping or bundling, etc.

[0054] Specifically, the ablation electrode 31 is configured as follows: when the ablation electrode 31 includes a working electrode 311 and a loop electrode 312, the ablation electrode 31 adopts bipolar control; when the ablation electrode 31 includes multiple working electrodes 311 and the same number of loop electrodes 312 as the working electrode 311, the ablation electrode 31 adopts multipolar independent control. Bipolar control means that the ablation function is achieved by only one working electrode 311 cooperating with a corresponding loop electrode 312; multipolar independent control means that multiple working electrodes 311 are respectively coordinated with corresponding loop electrodes 312, each working electrode 311 and the corresponding loop electrode 312 are mutually bipolar, and the ablation function is achieved according to each combined bipolar, and each bipolar can be independently controlled during ablation.

[0055] refer to Figures 5 to 7 As shown, the working pole tube 3111 and the return pole 312 of this embodiment are made of metal tubes with textures, such as Fig. 9 and Fig.10 Two different cutting patterns are shown. By setting corresponding cutting patterns on the working electrode 3111 and the return electrode 312, the ablation electrode 31 can achieve the function of compliant bending. Figure 7The number of working poles 311, loop poles 312 and temperature sensors 3113 provided in the apparatus is two respectively, and each working pole 311, loop pole 312 and temperature sensor 3113 correspond respectively. The combination of working poles and loop poles can realize the function of multi-pole independent control. When ablation of a complex or irregular area is required (i.e., irregular ablation), precise ablation can be realized through multi-pole independent control, which improves the accuracy and effect of ablation and avoids damage to surrounding tissues. For example, in the vertebral base nerve, the number of nerves at the front edge of the vertebral body and the rear edge of the vertebral body is relatively large. The large-scale nerve bundle at the front edge of the vertebral body needs to be ablated in a large range, and the nerve root at the rear edge of the vertebral body needs to be ablated in a small range, which can reduce the risk of damaging the spinal canal due to excessive range. Optionally, when the ablation electrode 31 is a bipolar ablation electrode (i.e., there is only one working pole and one loop pole), irregular ablation is realized by combining the effective part of the working pole exposed on the outside of the inner sleeve 313 with the effective part of the loop pole exposed on the outside of the outer sleeve 314.

[0056] In this embodiment, the working electrode tube 3111 and the return electrode 312 can be compliantly bent through the design of the metal tube with cutting lines, which can meet the needs of different surgical paths; the compliantly bent electrode can fit the surgical area more closely, reduce tissue compression or damage caused by electrode shape mismatch, help reduce surgical risks, and improve patient safety. Through multi-pole independent control, the ablation intensity and time of different areas can be adjusted according to needs during surgery, thereby optimizing the treatment effect, helping to reduce unnecessary tissue damage and improve the success rate of surgery; multi-pole independent control can also provide a single simultaneous treatment of multiple ablation areas, shortening the operation time and improving the efficiency of the operation. The ablation electrode with multi-pole independent control can achieve a special-shaped ablation range, allowing doctors to accurately ablate specific areas according to the differences in nerve distribution, and can reduce the risk of damaging surrounding important tissues, such as the spinal canal, due to excessive or inaccurate ablation range. Accurate special-shaped ablation range helps reduce adverse reactions such as postoperative pain and edema, and improves patient comfort.

[0057] An internal insulating member 315 is also provided between the working electrode tube 3111 and the temperature sensor 3113. The internal insulating member 315 can be used as an electrical isolation layer to achieve electrical isolation between different electrodes and ensure that no current short circuit occurs between different electrodes. Further, the needle tube component includes a needle tube handle 11 and a needle tube 12, and the needle tube handle 11 is fixedly connected to the needle tube 12; the needle core component includes a needle core handle 13 and a needle core 14, and the needle core handle 13 is fixedly connected to the needle core 14; the needle tube handle 11 is provided with a limiting portion 111, and when the puncture assembly 10 is working, the needle core handle 13 is threadedly connected to the needle tube handle 11 and is located at the limiting portion 111; the end of the needle core 14 is provided with a puncture portion 141, and when the needle core 14 is inserted into the needle tube 12, the puncture portion 141 is located outside the needle tube 12. The needle core handle 13 is connected to the needle tube handle 11. The connection methods between the needle core handle 13 and the needle tube handle 11 include but are not limited to threaded connection, snap connection, etc. The needle tube handle 11 is provided with a limiting portion 111. The needle core handle 13 is located at the limiting portion 111 of the needle tube handle 11, which can accurately control the extension length of the needle core 14 relative to the needle tube 12, which helps to adjust the puncture depth according to actual needs during the operation, thereby achieving accurate puncture of the target tissue. The puncture portion 141 is located outside the needle tube 12, so that during the puncture process, the sharp part of the needle core 14 can first contact and penetrate the target tissue, while the needle tube 12 plays a guiding and supporting role, which helps to reduce damage to surrounding tissues during the operation and improve the safety of the operation.

[0058] Alternatively, see Figures 11 to 13Another structural form of the sleeve assembly 20 of this embodiment is shown, and the sleeve assembly 20 includes a filling tube 21, a liner core 211, a rotation and withdrawal component 26, a first liner core handle 27 and a filling tube handle 28. Among them, the filling tube 21 is fixedly connected to the filling tube handle 28, and the rotation and withdrawal component 26 is threadedly connected to the filling tube handle 28. The rotation and withdrawal component 26 includes a rotating base 261, a rotating nut 262, a rotation limit buckle 263 and a positioning member 264, and the positioning member 264 is detachably matched with the filling tube handle 28. The positioning member 264 is provided with a limited opening 2641, which is used to set a limited rib on the filling tube handle 28, and the axial limit is achieved by the limited rib and the limited opening 2641. The filling tube 21 is fixedly connected to the filling tube handle 28, and the rotation and withdrawal component 26 is threadedly connected to the filling tube handle 28. This connection method is not only simple and reliable, but also easy to disassemble and replace, reducing maintenance costs and time. The rotating base 261, the rotating nut 262, the rotating limit buckle 263 and the positioning member 264 cooperate to realize the function of rotating and withdrawing, which helps to quickly and accurately withdraw the sleeve assembly when needed, thereby improving the accuracy and safety of the operation. The limiting opening 2641 provided on the positioning member 264 cooperates with the limiting rib provided on the filling tube handle 28 to realize the function of axial limiting, ensure the stability of the sleeve assembly 20 during use, and prevent operational errors or safety accidents caused by accidental movement.

[0059] Alternatively, see Fig.14 The figure shows another structural form of the sleeve assembly 20 of the present embodiment, which comprises a filling tube 21, a liner core 211, a first liner core handle 27, a filling tube handle 28 and a straight pull retraction component 29. When the filling tube 21 needs to be retracted, the filling tube 21 can be directly retracted in a direction away from the filling tube 21 by the straight pull retraction component 29 under the action of an external force, which can also realize the retraction function, and the structure is relatively simple and the manufacturing cost is low.

[0060] Alternatively, see Fig.15 and Fig.16 The figure shows a cross-sectional view corresponding to an ablation electrode 31 and a cross-sectional view corresponding to an electrode handle 32 of another structure of an ablation assembly 30, wherein the ablation electrode 31 includes a working electrode 311, a return electrode 312, an inner sleeve 313 and an outer sleeve 314, the working electrode 311 includes a working electrode tube 3111 and an electrode head 3112, and the ablation electrode 31 is also provided with a temperature sensor 3113. The electrode handle 32 includes a crimping tube 327, a handle tail sleeve 324 and a temperature sensor cable 3114, wherein two crimping tubes 327 are provided, which are crimped on the working electrode 311 and the return electrode 312 respectively, and the temperature sensor cable 3114 is connected to the temperature sensor 3113 of the ablation electrode 31.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertebral nerve ablation device, characterized in that: include: A puncture assembly (10), the puncture assembly (10) comprising a needle core component and a needle tube component, and when the puncture assembly (10) is in operation, the needle core component is inserted into the needle tube component; A sleeve assembly (20), wherein the sleeve assembly (20) is detachably connected to the puncture assembly (10), the sleeve assembly (20) comprises a filling tube (21), a filling tube fixing member (22), an adjusting handle (23) and a matching limiting member (24), wherein the filling tube (21) is fixedly connected to the filling tube fixing member (22), and when the sleeve assembly (20) is in operation, a liner core (211) is arranged inside the filling tube (21); the adjusting handle (23) comprises a retraction handle (231) and a liner core handle (232), wherein the retraction handle (231) is threadedly connected to the filling tube fixing member (22), and the liner core handle (232) is fixedly connected to the liner core (211); the matching limiting member (24) is rotatably connected to the retraction handle (231), and the sleeve assembly (20) is detachably connected to the puncture assembly (10) via the matching limiting member (24); An ablation assembly (30), the ablation assembly (30) comprising an ablation electrode (31) and an electrode handle (32), the ablation electrode (31) being fixedly connected to the electrode handle (32), and when the ablation electrode (31) is working, the ablation electrode (31) is inserted into the filling tube (21), and the electrode handle (32) is connected to the sleeve assembly (20).

2. The vertebral nerve ablation device according to claim 1, characterized in that: The mating limiter (24) comprises an axial mating limiter (241) and a radial mating limiter (242); the axial mating limiter (241) is connected to the filling tube fixing member (22) via a first connecting member (25); the axial mating limiter (241) and the first connecting member (25) are rotatably connected; and the filling tube fixing member (22) and the first connecting member (25) are threadedly connected.

3. The vertebral nerve ablation device according to claim 2, characterized in that: The filling tube fixing member (22) comprises a filling handle (221) and a guide rail (222); the filling handle (221) is arranged in the guide rail (222) and extends along the length direction of the guide rail (222); the filling handle (221) has a first transmission tooth (2211) protruding from the outer surface of the guide rail (222); and the guide rail (222) is threadedly connected to the first connecting member (25).

4. The vertebral nerve ablation device according to claim 3, characterized in that: The withdrawal handle (231) comprises a withdrawal adjustment member (2311) and a sleeve (2312); the withdrawal adjustment member (2311) is fixedly connected to the sleeve (2312); the inner wall of the sleeve (2312) is provided with a second transmission tooth (2313); the second transmission tooth (2313) is meshed with the first transmission tooth (2211) of the filling handle (221), so that when the withdrawal handle (231) is rotated, the filling handle (221) is driven to slide in the guide rail (222) along the length direction of the guide rail (222).

5. The vertebral nerve ablation device according to claim 4, characterized in that: An end cover (240) is provided between the radial matching limiter (242) and the sleeve (2312); one end of the end cover (240) is threadedly connected to the radial matching limiter (242), and the other end is buckled with the sleeve (2312).

6. The vertebral nerve ablation device according to claim 4, characterized in that: A limiting fitting part (233) is provided between the core handle (232) and the sleeve (2312), one end of the limiting fitting part (233) is fixedly connected to the guide rail (222), and the other end is detachably connected to the core handle (232), and the limiting fitting part (233) is used to limit the retracted position of the filling tube (21).

7. The vertebral nerve ablation device according to claim 1, characterized in that: The sleeve assembly (20) also includes a limiting fitting (233), and the electrode handle (32) includes a handle body (321), a second connecting piece (322), a handle buckle (323) and a handle tail sleeve (324). One end of the handle body (321) is threadedly connected to the second connecting piece (322), and the other end of the handle body (321) is threadedly connected to the handle tail sleeve (324). The handle buckle (323) is rotatably connected to the handle body (321) through the second connecting piece (322); the handle buckle (323) can rotate relative to the handle body (321). When the ablation assembly (30) is working, the handle buckle (323) and the limiting fitting (233) are detachably connected; the handle tail sleeve (324) is used to fix the external cable (40).

8. The vertebral nerve ablation device according to claim 7, characterized in that: The ablation electrode (31) comprises a working electrode (311) and a return electrode (312); the handle body (321) is provided with a handle chamber (325); the handle chamber (325) is provided with a limit ring (326), a wire crimping tube (327) and a bridge wire (328); the limit ring (326) is used to limit the return electrode (312); the bridge wire (328) is used to connect the wire core of an external cable (40); and the wire crimping tube (327) is used to crimp and fix the working electrode (311) and the wire core of the external cable (40).

9. The vertebral nerve ablation device according to claim 1, characterized in that: The ablation electrode (31) comprises at least one working electrode (311) and a return electrode (312) corresponding to the working electrode (311) one by one, the working electrode (311) is inserted into the return electrode (312), the surface of the working electrode (311) is provided with an inner sleeve (313), and the surface of the return electrode (312) is provided with an outer sleeve (314); the working electrode (311) comprises a working electrode tube (3111) and an electrode head (3112), and the electrode head (3112) is provided with a temperature sensor (3113).

10. The vertebral nerve ablation device according to claim 1, characterized in that: The needle tube component comprises a needle tube handle (11) and a needle tube (12), wherein the needle tube handle (11) is fixedly connected to the needle tube (12); the needle core component comprises a needle core handle (13) and a needle core (14), wherein the needle core handle (13) is fixedly connected to the needle core (14); When the puncture assembly (10) is in operation, the needle core handle (13) is detachably connected to the needle tube handle (11); a puncture portion (141) is provided at the end of the needle core (14); when the needle core (14) is inserted into the needle tube (12), the puncture portion (141) is located outside the needle tube (12).

Images