Angle-adjustable spinal radiofrequency ablation electrode head

Abstract

The present application provides an angle-adjustable spinal radiofrequency ablation electrode blade, a fixed handle, a sleeve, a movable handle, an elastic connector and an electrode; the sleeve is provided with an assembly cavity, and the proximal end of the sleeve is connected to the fixed handle; the movable handle includes an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, the outer cylinder and the inner cylinder are rotatably matched and the two are relatively fixed in the axial extension direction of the inner cylinder or the outer cylinder, the inner cylinder and the outer cylinder are both arranged in the assembly cavity, the inner cylinder and the assembly cavity are slidably matched in the axial extension direction of the sleeve, and the inner cylinder and the assembly cavity are relatively fixed in the circumferential direction of the inner cylinder; one end of the elastic connector is connected to the fixed handle, and the other end is connected to the inner cylinder, and the elastic connector is used to make the inner cylinder have a sliding tendency away from the fixed handle; the electrode has an eccentrically arranged electrode blade, the electrode is inserted into the sleeve and fixedly connected to the outer cylinder. The electrode can be rotated and slidably adjusted, and the adjustment method is flexible and easy to use.

Description

Technical Field

[0001] The present application relates to the field of medical equipment, and in particular to an angle-adjustable spinal radiofrequency ablation electrode head. Background Art

[0002] The medical electrosurgical pen is a relatively common medical device used in surgery. The main function of the electrosurgical pen is to perform electrical tissue cutting and electrocoagulation hemostasis. It usually includes a pen body, a functional tube arranged at the front end of the pen body, a circuit board system arranged inside the pen body and electrically connected to the functional tube, and electrodes arranged in the functional tube. Usually, when using an electrosurgical pen for surgery, it is necessary to cooperate or cross-use some parallel surgical instruments, such as laser optical fibers, irrigation aspirators, biopsy forceps, lighting optical fibers, endoscopes, etc. When the electrosurgical pen works with these parallel surgical instruments, it usually requires multiple people to operate, which makes the surgery inconvenient. When the existing electrosurgical pen is used, in order to adjust the position of the electrode blade head, the electrode blade head is usually set to a retractable structure.

[0003] It was found in the study that the existing electric knife pen has the following disadvantages:

[0004] Inconvenient to use. Summary of the invention

[0005] The present application provides an angle-adjustable spinal radiofrequency ablation electrode head to improve the above-mentioned technical problems.

[0006] The present invention is specifically as follows:

[0007] Based on the above purpose, the embodiment of the present application provides an angle-adjustable spinal radiofrequency ablation electrode head, comprising:

[0008] A fixed handle, a sleeve, a movable handle, an elastic connector and an electrode;

[0009] The sleeve is provided with an assembly cavity, and the proximal end of the sleeve is connected to the fixed handle; the movable handle comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, the outer cylinder and the inner cylinder are rotatably matched and the two are relatively fixed in the axial extension direction of the inner cylinder or the outer cylinder, the inner cylinder and the outer cylinder are both arranged in the assembly cavity, the inner cylinder and the assembly cavity are slidably matched in the axial extension direction of the sleeve, and the inner cylinder and the assembly cavity are relatively fixed in the circumferential direction of the inner cylinder; one end of the elastic connector is connected to the fixed handle, and the other end is connected to the inner cylinder, and the elastic connector is used to make the inner cylinder have a sliding tendency away from the fixed handle; the electrode has an eccentrically arranged electrode blade, and the electrode is inserted into the sleeve and fixedly connected to the outer cylinder;

[0010] When the elastic connecting member drives the inner cylinder to move relative to the fixed handle, the electrode and the outer cylinder move synchronously with the inner cylinder, so that the electrode can telescope relative to the sleeve; and the outer cylinder can rotate relative to the sleeve to drive the electrode to rotate, thereby adjusting the angle of the electrode blade.

[0011] Optionally, the sleeve includes a first pipe segment, a limiting pipe segment and a second pipe segment connected in sequence, and one end of the first pipe segment away from the limiting pipe segment is connected to the fixed handle; an operating hole is provided through the tube wall of the limiting pipe segment, and the operating hole is connected to the tube cavity of the limiting pipe segment and the two together define the assembly cavity; part of the outer tube wall of the outer tube is exposed at the operating hole.

[0012] Optionally, an anti-slip structure is provided on the outer cylinder wall of the outer cylinder.

[0013] Optionally, the anti-slip structure is configured as a plurality of cross-arranged grooves.

[0014] Optionally, a strip-shaped limiting hole is provided through the tube wall of the limiting tube segment, and the strip-shaped limiting hole extends along the axial extension direction of the limiting tube segment. One end of the elastic connecting piece is passed through the strip-shaped limiting hole and is fixedly connected to the inner tube. The elastic connecting piece and the strip-shaped limiting hole can be slidably matched in the axial extension direction of the limiting tube segment, and the two are relatively fixed in the circumferential direction of the limiting tube segment.

[0015] Optionally, the proximal end of the inner tube extends out of the proximal end of the outer tube, and the proximal end of the inner tube is inserted into the distal end of the first tube segment and slidably cooperates with the first tube segment; the distal end of the outer tube is inserted into the proximal end of the second tube segment and the two are slidably cooperated.

[0016] Optionally, the outer tube wall of the inner tube is provided with a first guide structure, and the inner tube wall of the first tube section is provided with a second guide structure, the first guide structure is set to one of a protrusion and a groove, and the second guide structure is set to the other of the protrusion and the groove, and the first guide structure and the second guide structure are slidably matched.

[0017] Optionally, the fixed handle is provided with a through hole for passing a power cord, and the power cord is used to be electrically connected to the electrode.

[0018] Optionally, the outer cylinder includes a first cylinder section and a second cylinder section that are connected, the first cylinder section and the second cylinder section are coaxial, and the inner diameter of the first cylinder section is larger than the inner diameter of the second cylinder section; the inner cylinder includes a third cylinder section and a fourth cylinder section that are connected, the outer diameter of the third cylinder section is larger than the outer diameter of the fourth cylinder section, the fourth cylinder section is inserted into the first cylinder section, and the outer cylinder wall of the third cylinder section and the outer cylinder wall of the first cylinder section are located on the same cylindrical surface; the electrode is inserted into the second cylinder section and fixedly connected to the second cylinder section.

[0019] Optionally, the elastic connecting member is configured as an elastic bending strip having a bending portion, one end of the elastic bending strip is connected to the fixed handle, and the other end is fixedly connected to the inner cylinder.

[0020] The beneficial effects of the present invention are:

[0021] In summary, this embodiment provides an angle-adjustable spinal radiofrequency ablation electrode blade. When in use, the operator holds the elastic connector, that is, holds the elastic connector with one hand, applies external force to the elastic connector, and the elastic connector drives the inner tube to slide relative to the fixed handle, thereby driving the electrode to slide relative to the fixed handle through the outer tube, and the electrode can be retracted to the distal end of the sleeve, and the length of the electrode extending out of the sleeve can also be adjusted. After reducing the external force applied to the elastic connector, the elastic connector restores its deformation, thereby moving the inner tube away from the fixed handle, and driving the electrode away from the fixed handle through the outer tube, so that the electrode can extend out of the sleeve. In addition, the outer tube can be rotated relative to the sleeve, driving the electrode to rotate relative to the sleeve, so that the position of the electrode blade of the electrode changes. In other words, the electric knife pen provided in this embodiment adjusts the position of the electrode blade by sliding and rotating. It is flexible to adjust, has a wide range of applications, is convenient for surgery, and improves the success rate and efficiency of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the angle-adjustable spinal radiofrequency ablation electrode head provided in this application;

[0024] Figure 2 A schematic diagram of a portion of the structure of the angle-adjustable spinal radiofrequency ablation electrode head provided in this application;

[0025] Figure 3A schematic structural diagram of the position-limiting tube section of the angle-adjustable spinal radiofrequency ablation electrode head provided in this application.

[0026] icon:

[0027] 100-fixed handle; 200-sleeve; 210-first tube section; 211-second guide structure; 220-limiting tube section; 221-operating hole; 222-strip limiting hole; 230-second tube section; 240-assembly cavity; 300-movable handle; 310-outer cylinder; 311-first cylinder section; 312-second cylinder section; 313-first annular groove; 320-inner cylinder; 321-third cylinder section; 322-fourth cylinder section; 323-connecting cylinder section; 324-second annular groove; 325-first guide structure; 330-ball; 400-elastic connector; 500-electrode; 510-electrode blade; 600-power cord. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the embodiments of the present application, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the product of the application is usually placed when in use. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the angle-adjustable spinal radiofrequency ablation electrode head or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Example:

[0035] At present, when using an electrosurgical pen, especially a spinal radiofrequency ablation electrode head, it is necessary to constantly adjust the position of the electrode end to adapt to surgical treatment of different tissues. However, the electrosurgical pen of the prior art can only extend and retract the electrode head during surgery, has a single adjustment function, and is inconvenient to use.

[0036] In view of this, the designer has designed an angle-adjustable spinal radiofrequency ablation electrode head. The electrode can rotate and slide, has various adjustable modes, is flexible to adjust, is easy to use, facilitates surgery, and improves surgical efficiency and quality.

[0037] See also Figure 1-Figure 3 In this embodiment, the angle-adjustable spinal radiofrequency ablation electrode head includes a fixed handle 100 , a sleeve 200 , a movable handle 300 , an elastic connector 400 and an electrode 500 .

[0038] The sleeve 200 is provided with an assembly cavity 240, and the proximal end of the sleeve 200 is connected to the fixed handle 100; the movable handle 300 includes an inner cylinder 320 and an outer cylinder 310, the outer cylinder 310 is sleeved outside the inner cylinder 320, the outer cylinder 310 and the inner cylinder 320 are rotatably matched and the two are relatively fixed in the axial extension direction of the inner cylinder 320 or the outer cylinder 310, the inner cylinder 320 and the outer cylinder 310 are both arranged in the assembly cavity 240, the inner cylinder 320 and the assembly cavity 240 are slidably matched in the axial extension direction of the sleeve 200, and the inner cylinder 320 and the assembly cavity 240 are relatively fixed in the circumferential direction of the inner cylinder 320; one end of the elastic connector 400 is connected to the fixed handle 100, and the other end is connected to the inner cylinder 320, and the elastic connector 400 is used to make the inner cylinder 320 have a sliding tendency away from the fixed handle 100; the electrode 500 The electrode 500 has an eccentrically arranged electrode head 510 , is inserted into the sleeve 200 and is fixedly connected to the outer cylinder 310 .

[0039] When the elastic connecting member 400 drives the inner cylinder 320 to move relative to the fixed handle 100, the electrode 500 and the outer cylinder 310 move synchronously with the inner cylinder 320, so that the electrode 500 can telescope relative to the sleeve 200; and the outer cylinder 310 can rotate relative to the sleeve 200 to drive the electrode 500 to rotate, thereby adjusting the angle of the electrode blade head 510.

[0040] When the angle-adjustable spinal radiofrequency ablation electrode blade provided in this embodiment is used, the operator holds the elastic connector 400, that is, holds the elastic connector 400 with one hand, applies external force to the elastic connector 400, and the elastic connector 400 drives the inner cylinder 320 to slide relative to the fixed handle 100, thereby driving the electrode 500 to slide relative to the fixed handle 100 through the outer cylinder 310, and the electrode 500 can be retracted to the distal end of the sleeve 200, and the length of the electrode 500 extending out of the sleeve 200 can also be adjusted. After reducing the external force applied to the elastic connector 400, the elastic connector 400 restores its deformation, thereby moving the inner cylinder 320 away from the fixed handle 100, driving the electrode 500 away from the fixed handle 100 through the outer cylinder 310, and the electrode 500 can extend out of the sleeve 200. Furthermore, the outer cylinder 310 can be rotated relative to the sleeve 200 by rotating the outer cylinder 310, driving the electrode 500 to rotate relative to the sleeve 200, so that the position of the electrode head 510 of the electrode 500 is changed. In other words, the electrosurgical pen provided in this embodiment adjusts the position of the electrode head 510 by sliding and rotating, and is flexible to adjust, has a wide range of applications, is convenient for surgery, and improves the success rate and efficiency of surgery.

[0041] See also Figure 2In this embodiment, optionally, the sleeve 200 includes a first pipe section 210, a position-limiting pipe section 220, and a second pipe section 230 connected in sequence. The first pipe section 210, the position-limiting pipe section 220, and the second pipe section 230 are all circular pipes, and the first pipe section 210, the second pipe section 230, and the position-limiting pipe section 220 are coaxially arranged. One end of the first pipe section 210 away from the position-limiting pipe section 220 is connected to the fixed handle 100; an operation hole 221 is provided through the pipe wall of the position-limiting pipe section 220, and the operation hole 221 is connected to the pipe cavity of the position-limiting pipe section 220 and the two together define an assembly cavity 240; part of the outer tube 310 wall of the outer tube 310 is exposed at the operation hole 221.

[0042] See also Figure 3 Optionally, the number of the operation holes 221 is two, and the two operation holes 221 are evenly spaced and arranged in the circumferential direction of the limiting tube segment 220. Part of the outer tube wall of the outer cylinder 310 is simultaneously exposed at the two operation holes 221. When rotating, the outer tube wall of the outer cylinder 310 exposed at the operation holes 221 of the limiting tube segment 220 can be moved, which is convenient for operation.

[0043] Optionally, the inner diameter of the limiting pipe segment 220 is larger than the inner diameters of the first pipe segment 210 and the second pipe segment 230, and the outer diameter of the limiting pipe segment 220 is larger than the inner diameters of the first pipe segment 210 and the second pipe segment 230. In this way, a sufficiently large space can be provided for assembling the inner cylinder 320 and the outer cylinder 310, and a larger outer cylinder 310 can be assembled, thereby facilitating the movement of the outer cylinder 310 and adjusting the position of the electrode blade head 510.

[0044] It should be understood that the first pipe segment 210 , the limiting pipe segment 220 and the second pipe segment 230 may be integrally formed.

[0045] Furthermore, a strip-shaped limiting hole 222 is provided between the two operating holes 221 . The strip-shaped limiting hole 222 is a rectangular hole. The strip-shaped limiting hole 222 penetrates the tube wall of the limiting tube section 220 . The strip-shaped limiting hole 222 extends along the axial extension direction of the limiting tube section 220 .

[0046] In this embodiment, the outer cylinder 310 is optionally configured as a stepped cylinder structure, and the outer cylinder 310 includes a first cylinder section 311 and a second cylinder section 312 connected in sequence, the first cylinder section 311 and the second cylinder section 312 are coaxially arranged and are both cylinders, the inner diameter of the first cylinder section 311 is greater than the inner diameter of the second cylinder section 312, and the outer diameter of the first cylinder section 311 is greater than the outer diameter of the second cylinder section 312. The wall of the inner cylinder 320 of the first cylinder section 311 is provided with a first annular groove 313.

[0047] Furthermore, the wall of the outer cylinder 310 of the first cylinder section 311 is provided with an anti-slip structure, which can be provided as a plurality of cross-arranged grooves. When the outer cylinder 310 is moved to drive the electrode 500 to rotate, the operator contacts the anti-slip structure to increase the friction force, making the movement more flexible and convenient, and facilitating the operation.

[0048] It should be understood that the outer diameter of the first barrel section 311 is not greater than the inner diameter of the limiting tube section 220 , the first barrel section 311 does not protrude the operating hole 221 , the first barrel section 311 can rotate 360° relative to the limiting sleeve 200 , and the angle adjustment range of the electrode 500 is wide, which facilitates the use of the electrode 500 .

[0049] Optionally, the inner cylinder 320 is set as a stepped cylinder structure, and the inner cylinder 320 includes a third cylinder section 321 and a fourth cylinder section 322 connected in sequence, and the third cylinder section 321 and the fourth cylinder section 322 are both cylinders, and the inner diameter and outer diameter of the third cylinder section 321 are both larger than the inner diameter and outer diameter of the fourth cylinder section 322, and the outer diameter of the fourth cylinder section 322 is not larger than the inner diameter of the first cylinder section 311, and the outer diameter of the third cylinder section 321 is substantially equal to the outer diameter of the first cylinder section 311. The outer cylinder 310 wall of the fourth cylinder section 322 is provided with a second annular groove 324.

[0050] It should be noted that when the inner cylinder 320 and the outer cylinder 310 are assembled, the fourth cylinder section 322 of the inner cylinder 320 is inserted into the first cylinder section 311 of the outer cylinder 310, and the outer cylinder 310 wall of the first cylinder section 311 and the outer cylinder 310 wall of the fourth cylinder section 322 are located on the same cylindrical surface. A plurality of balls 330 are clamped between the first annular groove 313 and the second annular groove 324, and the plurality of balls 330 are arranged in sequence in the circumferential direction of the inner cylinder 320 or the outer cylinder 310. The plurality of balls 330 can reduce the friction between the inner cylinder 320 and the outer cylinder 310 when the inner cylinder 320 and the outer cylinder 310 rotate relative to each other, and the plurality of balls 330 can realize the relative fixation of the inner cylinder 320 and the outer cylinder 310 in the extension direction of the axis of the inner cylinder 320 or the outer cylinder 310, that is, the inner cylinder 320 and the outer cylinder 310 can only rotate relative to each other, and will not slide relative to each other in the extension direction of the inner cylinder 320 and the outer cylinder 310.

[0051] Furthermore, the inner diameter of the fourth barrel section 322 is substantially equal to the inner diameter of the second barrel section 312 .

[0052] In other embodiments, the inner tube 320 further includes a connecting tube section 323, which is a cylinder, and the outer diameter of the connecting tube section 323 is smaller than the outer diameter of the third tube section 321, and the outer diameter of the connecting tube section 323 is smaller than the diameter of the first tube section 210. The connecting tube section 323 is connected to the end of the third tube section 321 away from the fourth tube section 322, and the outer tube 310 wall of the connecting tube section 323 is provided with a first guide structure 325, and the first guide structure 325 is configured as a protrusion or a groove. The proximal end of the connecting tube section 323 is slidably matched with the distal end of the first tube section 210.

[0053] Optionally, the inner tube wall of the first tube section 210 is provided with a second guide structure 211, and the second guide structure 211 is configured as a protrusion or a groove, and the first guide structure 325 and the second guide structure 211 are slidably matched. When the first guide structure 325 is configured as a protrusion, the second guide structure 211 is configured as a groove that matches the protrusion; when the first guide structure 325 is configured as a groove, the second guide structure 211 is configured as a protrusion that matches the groove. In this way, the inner tube 320 and the first tube section 210 are slidably matched in the extension direction of the first tube section 210, and the two will not rotate relative to each other, and the position is stable and reliable.

[0054] Optionally, the second barrel section 312 is inserted into the second pipe section 230, and the second barrel section 312 is slidably matched with the second pipe section 230. When the inner barrel 320 and the outer barrel 310 are arranged in the assembly cavity 240 of the limiting pipe section 220, the inner barrel 320 and the first pipe section 210 are slidably matched, and the outer barrel 310 and the second pipe section 230 are slidably matched, so that impurities are not easy to enter the sleeve 200, thereby not easy to contaminate the electrode 500 located in the sleeve 200.

[0055] In this embodiment, optionally, the proximal end of the first tube segment 210 is fixedly connected to the fixed handle 100 .

[0056] In this embodiment, optionally, the elastic connecting member 400 is configured as an elastic bending strip having a bending portion, one end of the elastic bending strip is connected to the fixed handle 100, and the other end passes through the strip-shaped limiting hole 222 and is fixedly connected to the third barrel section 321 of the inner barrel 320.

[0057] In this embodiment, the electrode 500 is optionally provided in the sleeve 200, and the proximal end of the electrode 500 is provided in the second barrel section 312 and fixedly connected to the second barrel section 312. It is set that when an external force is applied to the elastic bending strip to make the two ends of the elastic bending strip close to each other, that is, the inner barrel 320 and the fixed handle 100 close to each other, the outer barrel 310 can drive the electrode 500 close to the fixed handle 100, so that the electrode 500 is retracted into the distal end of the sleeve 200. Similarly, when the external force is removed or an external force is applied to make the two ends of the elastic bending strip move away from each other, the inner barrel 320 and the fixed handle 100 move away from each other, and the outer barrel 310 can drive the electrode 500 to extend out of the distal end of the sleeve 200. It should be understood that due to the cooperation of the first guide structure 325 and the second guide structure 211, the inner barrel 320 will not rotate relative to the sleeve 200, and when the telescopic length of the electrode 500 is adjusted by sliding, the electrode 500 will not rotate, and the adjustment is convenient and reliable. When the angle of the electrode 500 needs to be adjusted, the outer cylinder 310 is directly rotated. Since the inner cylinder 320 is relatively fixed relative to the sleeve 200 in the circumferential direction of the sleeve 200, the inner cylinder 320 will not rotate, thereby preventing the elastic connector 400 from rotating, which is not likely to affect the operator's holding posture and the operation.

[0058] Optionally, the fixed handle 100 is provided with a through hole for the power cord 600 to pass through, and the power cord 600 can be electrically connected to the electrode.

[0059] The angle-adjustable spinal radiofrequency ablation electrode head provided in this embodiment has two functions, namely, rotation and sliding, and has a wide adjustment range and a wide adaptability. Moreover, the rotation adjustment and the sliding adjustment are independent of each other, and complement each other, so the operation is convenient and reliable.

[0060] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An angle-adjustable spinal radiofrequency ablation electrode head, characterized in that: include: A fixed handle, a sleeve, a movable handle, an elastic connector and an electrode; The sleeve is provided with an assembly cavity, and the proximal end of the sleeve is connected to the fixed handle; the movable handle comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, the outer cylinder and the inner cylinder are rotatably matched and the two are relatively fixed in the axial extension direction of the inner cylinder or the outer cylinder, the inner cylinder and the outer cylinder are both arranged in the assembly cavity, the inner cylinder and the assembly cavity are slidably matched in the axial extension direction of the sleeve, and the inner cylinder and the assembly cavity are relatively fixed in the circumferential direction of the inner cylinder; one end of the elastic connector is connected to the fixed handle, and the other end is connected to the inner cylinder, and the elastic connector is used to make the inner cylinder have a sliding tendency away from the fixed handle; the electrode has an eccentrically arranged electrode blade, and the electrode is inserted into the sleeve and fixedly connected to the outer cylinder; When the elastic connecting member drives the inner cylinder to move relative to the fixed handle, the electrode and the outer cylinder move synchronously with the inner cylinder, so that the electrode can perform telescopic movement relative to the sleeve; and the outer cylinder can rotate relative to the sleeve to drive the electrode to rotate, thereby adjusting the angle of the electrode blade; The sleeve comprises a first pipe section, a position-limiting pipe section and a second pipe section connected in sequence, wherein one end of the first pipe section away from the position-limiting pipe section is connected to the fixed handle; an operation hole is provided through the pipe wall of the position-limiting pipe section, the operation hole is connected to the pipe cavity of the position-limiting pipe section and the two together define the assembly cavity; a part of the outer tube wall of the outer tube is exposed at the operation hole; The outer cylinder includes a first cylinder section and a second cylinder section that are connected, the first cylinder section and the second cylinder section are coaxial, and the inner diameter of the first cylinder section is greater than the inner diameter of the second cylinder section; the inner cylinder includes a third cylinder section and a fourth cylinder section that are connected, the outer diameter of the third cylinder section is greater than the outer diameter of the fourth cylinder section, the fourth cylinder section is inserted into the first cylinder section, and the outer cylinder wall of the third cylinder section and the outer cylinder wall of the first cylinder section are located on the same cylindrical surface; the electrode is inserted into the second cylinder section and fixedly connected to the second cylinder section.

2. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 1, characterized in that: An anti-slip structure is arranged on the outer cylinder wall of the outer cylinder.

3. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 2, characterized in that: The anti-slip structure is configured as a plurality of cross-arranged grooves.

4. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 1, characterized in that: A strip-shaped limiting hole is penetrated through the tube wall of the limiting tube segment, and the strip-shaped limiting hole extends along the axial extension direction of the limiting tube segment. One end of the elastic connecting piece is passed through the strip-shaped limiting hole and is fixedly connected to the inner tube. The elastic connecting piece and the strip-shaped limiting hole are slidably matched in the axial extension direction of the limiting tube segment, and the two are relatively fixed in the circumferential direction of the limiting tube segment.

5. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 1, characterized in that: The proximal end of the inner tube extends out of the proximal end of the outer tube, and the proximal end of the inner tube is inserted into the distal end of the first tube segment and slidably matched with the first tube segment; the distal end of the outer tube is inserted into the proximal end of the second tube segment and the two are slidably matched.

6. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 5, characterized in that: The outer tube wall of the inner tube is provided with a first guide structure, and the inner tube wall of the first tube section is provided with a second guide structure. The first guide structure is set to be one of a protrusion and a groove, and the second guide structure is set to be the other of the protrusion and the groove. The first guide structure and the second guide structure are slidably matched.

7. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 1, characterized in that: The fixed handle is provided with a through hole for passing a power line, and the power line is used to be electrically connected to the electrode.

8. The angle-adjustable spinal radiofrequency ablation electrode head according to claim 1, characterized in that: The elastic connecting member is configured as an elastic bending strip having a bending portion, one end of the elastic bending strip being connected to the fixed handle, and the other end being fixedly connected to the inner cylinder.

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