Adjustable ablation electrode

Abstract

The present application provides an adjustable ablation electrode, including a knife tube and an emitter. A bendable section is provided at one end of the knife tube, a knife head is provided at the end of the bendable section, the emitter is fixedly mounted at the end of the knife head, a control handle is fixedly provided at the other end of the knife tube, a rotating body is rotatably provided in the control handle, the rotating body is fixedly connected to a first pull wire and a second pull wire extending in the knife tube, one end of the first pull wire and one end of the second pull wire are fixedly connected to the knife head, the first pull wire and the second pull wire are pulled by the rotation of the rotating body to control the bending of the bendable section to drive the knife head to move; the rotating body is provided with two first slots and second slots that penetrate the rotating body; at least a portion of the first pull wire outer casing located in the first slot is fixedly connected to a first metal sleeve; at least a portion of the second pull wire outer casing located in the second slot is fixedly connected to a second metal sleeve. The adjustable ablation electrode of the present application has a simple structure, is easy to process, and has low cost.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an adjustable ablation electrode. Background Art

[0002] In recent years, low-temperature plasma ablation electrodes have been widely used in the treatment of otolaryngology, cervical spine, lumbar spine and other diseases, and have been proven to have good effects. They are characterized by high safety, short operation time, small trauma and quick effect. The basic principle is to use specific electrical energy through the blade electrode to stimulate the conductive medium (sodium chloride solution) in the blood, mucosa and nucleus pulposus tissue in the human body to form a highly concentrated plasma area around the electrode, and use the kinetic energy of high-speed moving ions in the plasma to directly break the molecular bonds, so that the target protein is gasified and decomposed into CO, NO2, etc., to achieve the purpose of tissue cutting, ablation, hemostasis, etc.

[0003] Due to the influence of the human body's own structure and the location of the lesion tissue, the ablation electrode will be blocked by other tissues during delivery to the lesion location, and the blade of the conventional ablation electrode cannot be accurately pushed to the lesion location. There are problems such as inconvenient operation and inflexible use of the ablation electrode. To solve this problem, an adjustable ablation electrode came into being. However, technicians in this field still need to continuously improve and develop a bendable ablation electrode with a simple structure, easy processing, and low cost. Summary of the invention

[0004] In order to improve the problems of complex structure, difficult processing and high cost of adjustable ablation electrodes, the present application provides an adjustable ablation electrode with a simple structure. The technical solution is as follows:

[0005] An adjustable ablation electrode comprises a knife tube and an emitter, wherein a bendable section is arranged at one end of the knife tube, a knife head is arranged at the end of the bendable section, the emitter is fixedly mounted at the end of the knife head, a control handle for driving the bendable section to bend so as to drive the knife head to move is fixedly arranged at the other end of the knife tube, a rotating body is rotatably arranged inside the control handle, the rotating body is fixedly connected to a first pull wire and a second pull wire extending inside the knife tube, one end of the first pull wire and one end of the second pull wire are fixedly connected to the knife head, the first pull wire and the second pull wire are pulled by the rotation of the rotating body to control the bending of the bendable section so as to drive the knife head to move;

[0006] The rotating axis of the rotating body is perpendicular to the longitudinal section of the control handle, and the rotating body is provided with two first slots and a second slot penetrating the rotating body, the first pull wire passes through and is fixed in the first slot, and the second pull wire passes through and is fixed in the second slot;

[0007] At least a portion of the first wire puller outer casing located in the first slot is fixedly connected to a first metal sleeve, and the first metal sleeve is fixed in the first slot;

[0008] At least a portion of the second wire puller outer casing located in the second slot is fixedly connected to a second metal sleeve, and the second metal sleeve is fixed in the second slot.

[0009] Compared with the prior art, the bendable ablation electrode of the present application has a simple structure, is easy to process, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of an adjustable ablation electrode provided in an embodiment of the present application.

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of an adjustable ablation electrode provided in an embodiment of the present application (the first pull wire and the second pull wire are not cross-sectionalized).

[0012] Figure 3 It is a schematic diagram of the cross-sectional structure of another adjustable ablation electrode provided in an embodiment of the present application (the first pull wire and the second pull wire are cross-sectionalized).

[0013] Figure 4 yes Figure 2 A schematic structural diagram from another perspective of the rotating body, the first pull wire, the second pull wire, the first metal sleeve and the second metal sleeve before being cut apart.

[0014] Figure 5 It is a schematic diagram of the cross-sectional structure of another adjustable ablation electrode provided in an embodiment of the present application (the first pull wire and the second pull wire are not cross-sectionalized).

[0015] Figure 6 It is a schematic diagram of the cross-sectional structure of another adjustable ablation electrode provided in an embodiment of the present application (the first pull wire and the second pull wire are not cross-sectionalized).

[0016] Figure 7 yes Figure 6 A schematic structural diagram from another perspective of the rotating body, the first pull wire, the second pull wire, the first pressing block and the second pressing block before being cut apart.

[0017] Figure 8 It is a schematic diagram of the partial cross-sectional structure of another adjustable ablation electrode provided in an embodiment of the present application (the first pull wire and the second pull wire are not cross-sectionalized).

[0018] Fig. 9 yes Figure 8 A schematic structural diagram of the rotating body, the first pressing block and the second pressing block from another perspective before being cut apart.

[0019] Explanation of the reference numerals: 1. knife tube; 13. blocking wall; 1131. outer side; 2. emitter; 3. bendable section; 4. knife head; 5. control handle; 51. housing; 52. rotating body; 521. first narrow slot; 522. second narrow slot; 523. protrusion; 53. first pull wire; 531. first fixing knot; 54. second pull wire; 541. second fixing knot; 55. first metal sleeve; 56. second metal sleeve; 57. cable; 58. first pressure block; 581. first wire hole; 582. first wire clamping groove; 59. second pressure block; 591. second wire hole; 592. second wire clamping groove; 6. push rod; 7. insulating base; 8. insulating sleeve. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0021] In the description of the present application, it should be noted that the terms "far away", "close", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1 , Figure 2 , Figure 3As shown, it is a schematic structural diagram of an adjustable ablation electrode provided by an embodiment of the present application, comprising a control handle 5, a knife tube 1 mounted on the control handle 5, a bendable section 3 arranged at the end of the knife tube 1 away from the control handle 5, a knife head 4 arranged at the end of the bendable section 3 away from the control handle 5, an emitter 2 fixedly mounted at the end of the knife head 4 away from the control handle 5, a rotating body 52 rotatably arranged in the control handle 5, and a first pull wire 53 and a second pull wire 54 connected between the control handle 5 and the knife head 4. Among them, the knife tube 1 is a hollow straight tube, the first pull wire 53 and the second pull wire 54 extend in the knife tube 1 along the axial direction of the knife tube 1, the rotating body 52 is fixedly connected to the first pull wire 53 and the second pull wire 54, and the end of the first pull wire 53 away from the control handle 5 and the end of the second pull wire 54 away from the control handle 5 are fixedly connected to the knife head 4. The knife head 4 is also a hollow straight tube, and one end of the first pull wire 53 and one end of the second pull wire 54 are fixed at different positions on the inner wall of the knife head 4. In the present embodiment, the first pull wire 53, the second pull wire 54, the cutter head 4, and the cutter tube 1 are all made of metal, so the first pull wire 53 and the second pull wire 54 are welded and fixed to the inner wall of the cutter head 4. In other embodiments, the first pull wire 53, the second pull wire 54, the cutter head 4, and the cutter tube 1 may also be made of other materials, which are not limited in the present application. The bendable section 3 is a hollow structure, and the first pull wire 53 and the second pull wire 54 are passed through the inside of the bendable section 3, the cutter tube 1 and the control handle 5. In the present embodiment, an insulating base 7 is fixedly installed at the end of the cutter head 4 away from the control handle 5, and the emitter 2 is fixedly installed on the insulating base 7.

[0026] Reference Figure 1 , Figure 2 , Figure 4 As shown, the rotation axis of the rotating body 52 is perpendicular to the longitudinal section of the control handle 5, and a protrusion 523 is respectively provided on two opposite side surfaces of the rotating body 52. ​​The rotating body 52 is rotatably connected to the housing 51 of the control handle 5 through the two protrusions 523. The housing 51 of the control handle 5 is provided with two through holes (not shown in the figure), and the two protrusions 523 on the rotating body 52 respectively pass through the two through holes. A push rod 6 is provided outside the housing 51 of the control handle 5. After the two protrusions 523 pass through the housing 51, they are engaged with the two side walls of the push rod 6, and the rotation of the rotating body 52 is controlled by pushing the push rod 6.

[0027] When using the ablation electrode, the push rod 6 is operated to control the retraction and extension of the first pull wire 53 and the second pull wire 54 to pull the cutter head 4. Because the rotating body 52 is fixedly connected to the first pull wire 53 and the second pull wire 54, the first pull wire 53 and the second pull wire 54 are pulled by the rotation of the rotating body 52 to control the bending of the bendable section 3 to drive the cutter head 4 to move. The different pulling forces of the first pull wire 53 and the second pull wire 54 on the cutter head 4 realize the control of different bending angles of the bendable section 3, thereby realizing the movement control of the cutter head 4, which is conducive to controlling the cutter head 4 to avoid blocking human tissue and delivering the cutter head 4 to the lesion position, thereby improving the problem of inconvenient operation and inflexible use of the ablation electrode tip.

[0028] Figure 2 The first pull wire 53 and the second pull wire 54 in the embodiment are not cut. Figure 3The first pull wire 53 and the second pull wire 54 are cut out. The rotating body 52 is provided with two first narrow slots 521 and second narrow slots 522 that penetrate the rotating body 52. ​​The first pull wire 53 passes through and is fixed in the first narrow slot 521, and the second pull wire 54 passes through and is fixed in the second narrow slot 522. The first pull wire 53 and the second pull wire 54 can be fixed to the rotating body 52 by means of glue or the like. In this embodiment, a first metal sleeve 55 is fixedly arranged on the outer surface of the portion of the first cable 53 located in the first slot 521. Fixed connection refers to fixed connection. The first metal sleeve 55 is fixed in the first slot 521, that is, the first cable 53 is fixedly connected to the first metal sleeve 55, and the first metal sleeve 55 is fixedly connected to the rotating body 52; a second metal sleeve 56 is fixedly arranged on the outer surface of the portion of the second cable 54 located in the second slot 522, and the second metal sleeve 56 is fixed in the second slot 522, that is, the second cable 54 is fixedly connected to the second metal sleeve 56, and the second metal sleeve 56 is fixedly connected to the rotating body 52. ​​The first cable 53, the second cable 54, the first metal sleeve 55, and the second metal sleeve 56 are all made of metal. The first cable 53 and the first metal sleeve 55, as well as the second cable 54 and the second metal sleeve 56 are fixed together by welding. Because the first metal sleeve 55 and the second metal sleeve 56 are both made of metal, they can be flattened and fixed in the first slot 521 and the second slot 522 respectively, so that the first pull wire 53, the first metal sleeve 55, the second pull wire 54, and the second metal sleeve 56 can be firmly and simply fixed on the rotating body 52. ​​To strengthen the fixation, adhesive is coated between the first metal sleeve 55 and the rotating body 52 and between the second metal sleeve 56 and the rotating body 52. ​​In addition, in this embodiment, the width of the first slot 521 and the second slot 522 at the part close to the knife tube 1 is smaller than the width of the part away from the knife tube 1, that is, the first slot 521 and the second slot 522 are both wide in one part and narrow in another part, and the part close to the knife tube 1 is narrow and the part away from the knife tube 1 is wide. The first metal sleeve 55 is placed at a wider position of the first slot 521, and the second metal sleeve 56 is placed at a wider position of the second slot 522. When the rotating body 52 is rotated, the narrower position of the first slot 521 and the second slot 522 can reduce the activity space of the first pull wire 53 and the second pull wire 54 therein, and can better limit the retraction length, so as to more accurately control the movement angle of the blade 4. The rotating body 52 used to control the retraction and extension of the first pull wire 53 and the second pull wire 54 in this embodiment is preferably made of plastic material, which is low in cost. The rotating body 52 has a simple structure and is easy to process. The first pull wire 53 and the second pull wire 54 are easily fixed in the first slot 521 and the second slot 522 of the rotating body 52, without many other components, thereby reducing the production cost of the flexible ablation electrode.

[0029] In a feasible implementation, the blade head 4, the blade tube 1, the first pull wire 53, and the second pull wire 54 are all made of conductive metal materials, and the blade head 4 is used as a return pole. After the first pull wire 53 passes through the first slot 521, its other end is electrically connected to the cable 57 of the return pole in the control handle 5. After the second pull wire 54 passes through the second slot 522, its other end is also electrically connected to the cable 57 of the return pole in the control handle 5. Because the first pull wire 53 and the second pull wire 54 are both fixedly connected to the inner side wall of the blade head 4, they can conduct electricity. Therefore, when the ablation host provides a return signal for the return pole, it is transmitted to the blade head 4 that also serves as the return pole through the cable 57 of the return pole, the first pull wire 53, and the second pull wire 54. The design of the first pull wire 53 and the second pull wire 54 also serving as the return pole cable 57 can save the use of the cable 57, and secondly, there is no need to set the return pole cable 57 in the knife tube 1 and the bendable section 3, thereby saving space in the knife tube 1 and the bendable section 3. Compared with the prior art, the knife tube 1 and the bendable section 3 can be made thinner or a larger space can be reserved in the knife tube 1 and the bendable section 3 to accommodate a water injection pipe and / or a suction pipe (not shown in the figure), etc.

[0030] It should be noted that in other embodiments, the cutter head 4, the cutter tube 1, the first pull wire 53, and the second pull wire 54 may also be made of other materials. For example, the cutter head 4 and / or the cutter tube 1 are made of hard plastic material, and the first pull wire 53 and the second pull wire 54 are flexible pull wires.

[0031] Reference Figure 5 As shown, another structural schematic diagram of an adjustable ablation electrode provided in an embodiment of the present application is Figure 2 One of the main differences of the bendable ablation electrode shown is that a separate cable 57 is provided to provide a loop signal for the blade head 4 as a loop electrode. One end of the cable 57 is electrically connected to the ablation host, and the other end is fixed and electrically connected to the inner wall of the blade head 4 after extending in the control handle 5, the blade tube 1, and the bendable section 3. The first pull wire 53 and the second pull wire 54 are preferably made of non-conductive materials, such as flexible materials made of polymer materials. The same or similar structures in the two embodiments are not repeated.

[0032] Reference Figure 6 , Figure 7 As shown, a schematic diagram of the structure of another adjustable ablation electrode provided in an embodiment of the present application is shown. Figure 6 is a schematic diagram of a cross-sectional structure in which the first pull wire 53 and the second pull wire 54 are not cut, Figure 7 for Figure 6 Another perspective structural diagram of the rotating body 52, the first pull wire 53, the second pull wire 54, the first pressing block 58 and the second pressing block 59 before being cut. Figure 5The main difference of the bendable ablation electrode shown is that a first pressing block 58 is fixedly arranged in the first slot 521, and the first pull wire 53 is fixed to the rotating body 52 through the first pressing block 58. In this embodiment, a first through-hole 581 is also arranged on the first pressing block 58. After the first pull wire 53 passes through the first through-hole 581, at least one first fixing knot 531 is tied on a side wall of the first pressing block 58 to fix the first pull wire 53 on the first pressing block 58. Preferably, the orthographic projection of the side wall on a plane is perpendicular to the extension direction of the protrusion 523 on the rotating body 52. ​​In order to fix the first pull wire 53 more firmly on the first pressing block 58, multiple first fixing knots 531 can be tied in other embodiments, which is not limited in this application; in addition, a second pressing block 59 is fixedly arranged in the second slot 522, and the second pull wire 54 is fixed to the rotating body 52 through the second pressing block 59. In this embodiment, a second wire hole 591 is further provided on the second pressing block 59. After the second pull wire 54 passes through the second wire hole 591, at least one second fixing knot 541 is tied on a side wall of the second pressing block 59 to fix the second pull wire 54 on the second pressing block 59. Preferably, the positive projection of the side wall on a plane is perpendicular to the extension direction of the protrusion 523 on the rotating body 52. ​​In order to make the second pull wire 54 more firmly fixed on the second pressing block 59, multiple second fixing knots 541 can be tied in other embodiments, which is not limited in this application. That is to say, in this embodiment, the first metal sleeve 55 is not fixedly provided on the outer surface of the first pull wire 53, but the first pull wire 53 is fixed on the rotating body 52 by providing a first pressing block 58; at the same time, the second metal sleeve 56 is not fixedly provided on the outer surface of the second pull wire 54, but the second pull wire 54 is fixed on the rotating body 52 by providing a second pressing block 59.

[0033] It should be noted that the first wire passing hole 581 and the second wire passing hole 591 are cylindrical holes in the present embodiment, and other shapes may be used in other embodiments. If the first pressure block 58, the second pressure block 59, and the rotating body 52 are all made of plastic material, the three can be formed as one piece. In other embodiments, the three can also be formed separately. For example, the rotating body 52 is made of plastic material, and the first pressure block 58 and the second pressure block 59 are made of metal material. The first pressure block 58 and the second pressure block 59 are fixed to the rotating body 52 by means of clamping or bonding, taking into account cost savings while taking into account the durability of the first pressure block 58 and the second pressure block 59. The first pull wire 53 and the second pull wire 54 are preferably flexible wires, such as flexible wires made of polymer materials. This embodiment and Figure 5 Other parts of the structure of the bendable ablation electrode that are the same or similar to the one shown are not described in detail.

[0034] Reference Figure 8 , Fig. 9 As shown, Figure 8It is a schematic diagram of the partial cross-sectional structure of another adjustable ablation electrode provided in an embodiment of the present application (the first pull wire 53 and the second pull wire 54 are not cut), mainly a schematic diagram of the cross-sectional structure of the control handle 5. Fig. 9 yes Figure 8 Another perspective structural diagram of the rotating body 52, the first pressing block 58 and the second pressing block 59 before being cut. Figure 6 , Figure 7 The main difference of the bendable ablation electrode shown is that a first wire clamping groove 582 is provided on one side wall of the first pressing block 58, and the first fixing knot 531 is punched into the first wire clamping groove 582, so that the first pull wire 53 is more firmly fixed on the first pressing block 58. Preferably, the first wire clamping groove 582 is wide at the top and narrow at the bottom; similarly, a second wire clamping groove 592 is provided on one side wall of the second pressing block 59, and the second fixing knot 541 is punched into the second wire clamping groove 592, so that the second pull wire 54 is more firmly fixed on the second pressing block 59. Preferably, the second wire clamping groove 592 is wide at the top and narrow at the bottom. This embodiment is different from Figure 6 , Figure 7 The same or similar parts of the bendable ablation electrode structure are not described in detail.

[0035] In another feasible embodiment of the present application, it is Figure 6 , Figure 7 The main difference between the flexible ablation electrodes shown is that after the first pull wire 53 passes through the first wire hole 581, it bypasses the side wall of the first pressure block 58 at least once and then passes through the first wire hole 581. In order to fix it firmly, it can be repeatedly wrapped around the side wall for many times, and finally at least one first fixing knot 531 is tied on the side wall of the first pressure block 58; similarly, after the second pull wire 54 passes through the second wire hole 591, it bypasses the side wall of the second pressure block 59 at least once and then passes through the second wire hole 591. In order to fix it firmly, it can be repeatedly wrapped around the side wall for many times, and finally at least one second fixing knot 541 is tied on the side wall of the second pressure block 59.

[0036] In another feasible embodiment of the present application, it is Figure 8 , Fig. 9 The main difference between the flexible ablation electrodes shown is that after the first pull wire 53 passes through the first wire passing hole 581, it bypasses the first wire clamping groove 582 on the side wall of the first pressing block 58 at least once and then passes through the first wire passing hole 581. In order to fix it firmly, it can be repeatedly wrapped around the first wire clamping groove 582 for many times, and finally at least one first fixing knot 531 is tied on the first wire clamping groove 582; similarly, after the second pull wire 54 passes through the second wire passing hole 591, it bypasses the second wire clamping groove 592 on the side wall of the second pressing block 59 at least once and then passes through the second wire passing hole 591. In order to fix it firmly, it can be repeatedly wrapped around the second wire clamping groove 592 for many times, and finally at least one second fixing knot 541 is tied on the second wire clamping groove 592.

[0037] The embodiment of fixing the first pull wire 53 and the second pull wire 54 on the rotating body 52 by the first pressing block 58 and the second pressing block 59 has a simple structure and is easy to process, thus reducing the production cost.

[0038] Reference Figure 1-Figure 3 , Figure 5 , Figure 6 As shown, the end of the blade head 4 away from the control handle 5 is fixedly mounted with an insulating base 7, and the emitter 2 of the flexible ablation electrode is fixedly mounted on the insulating base 7. When the flexible ablation electrode is working, the emitter 2 and the return electrode form a closed loop through physiological saline, etc., to ablate the lesion tissue. When the blade tube 1 and the flexible section 3 are made of metal, an insulating sleeve 8 is provided outside the blade tube 1 and the flexible section 3 to prevent leakage.

Claims

1. An adjustable ablation electrode, comprising a knife tube and an emitter, characterized in that: A bendable section (3) is provided at one end of the knife tube (1), a cutter head (4) is provided at the end of the bendable section (3), the emitter (2) is fixedly mounted at the end of the cutter head (4), a control handle (5) is fixedly mounted at the other end of the knife tube (1) for driving the bendable section (3) to bend so as to drive the cutter head (4) to move, a rotating body (52) is rotatably arranged inside the control handle (5), the rotating body (52) is fixedly connected to a first pull wire (53) and a second pull wire (54) extending inside the knife tube (1), one end of the first pull wire (53) and one end of the second pull wire (54) are fixedly connected to the cutter head (4), the first pull wire (53) and the second pull wire (54) are pulled by the rotation of the rotating body (52) to control the bending of the bendable section (3) so as to drive the cutter head (4) to move; The rotating axis of the rotating body (52) is perpendicular to the longitudinal section of the control handle (5); the rotating body (52) is provided with two first narrow slots (521) and second narrow slots (522) penetrating the rotating body (52); the first pull wire (53) passes through and is fixed in the first narrow slot (521); the second pull wire (54) passes through and is fixed in the second narrow slot (522); At least a portion of the first pull wire (53) located in the first narrow slot (521) is provided with a first metal sleeve (55) fixedly connected to the outer shell, and the first metal sleeve (55) is fixed in the first narrow slot (521); At least a portion of the second pull wire (54) located in the second narrow slot (522) is provided with a second metal sleeve (56) fixedly connected thereto, and the second metal sleeve (56) is fixedly secured in the second narrow slot (522); The width of the first narrow slot (521) and the second narrow slot (522) at the part close to the knife tube (1) is smaller than the width of the part far from the knife tube (1); the first metal sleeve (55) is placed at a wider position of the first narrow slot (521), and the second metal sleeve (56) is placed at a wider position of the second narrow slot (522); when the rotating body (52) is rotated, the narrower position of the first narrow slot (521) and the second narrow slot (522) can reduce the movement space of the first pull wire (53) and the second pull wire (54) therein.

2. The adjustable ablation electrode according to claim 1, characterized in that: The cutter head (4) is used as a loop electrode. The cutter head (4), the first pull wire (53) and the second pull wire (54) are all conductive metal wires. The other end of the first pull wire (53) and the other end of the second pull wire (54) are electrically connected to the cable (57) of the loop electrode in the control handle (5) to provide a loop signal for the loop electrode.

3. The adjustable ablation electrode according to claim 1, characterized in that: An insulating base (7) is fixedly mounted on the end of the blade head (4), the emitter (2) is fixedly mounted on the insulating base (7), the blade tube (1) and the bendable section (3) are both made of metal, and an insulating sleeve (8) is provided outside the blade tube (1) and the bendable section (3).

4. The adjustable ablation electrode according to claim 1, characterized in that: A protrusion (523) is respectively arranged on two opposite side surfaces of the rotating body (52); the rotating body (52) is rotatably connected to the outer shell (51) of the control handle (5) via the two protrusions (523); a push rod (6) is arranged outside the outer shell (51); the two protrusions (523) penetrate the outer shell (51) and are engaged with two side walls of the push rod (6); the rotation of the rotating body (52) is controlled by pushing the push rod (6).

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