Surgical electrode knife

Abstract

The invention provides a surgical electrode knife, and relates to the technical field of medical instruments, a user drives an energy transmission part to rotate through an operation assembly, and the energy transmission part is connected with an electrode assembly so as to drive the electrode assembly to rotate together, so that the operation assembly drives the electrode assembly to extend or retract relative to a conveying assembly; a user can freely change the extension length of the electrode assembly conveniently, and the technical problem that in the prior art, the length of an electrode tool bit in an electrode tool is fixed, and the extension length cannot be adjusted is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a surgical electrode knife. Background Art

[0002] Since the advent of endoscopic technology, its application has gradually expanded from disease diagnosis to treatment, demonstrating remarkable effectiveness and reliability in the diagnosis and treatment of digestive system diseases. Currently, techniques such as endoscopic tissue biopsy, endoscopic mucosal resection (EMR), and endoscopic mucosal dissection (ESD) have been widely used and are gradually becoming the preferred treatment options for gastrointestinal bleeding, polypectomy, and early cancer treatment. Among them, endoscopic high-frequency knives are specialized surgical instruments that utilize a high-frequency electrosurgical generator to perform minimally invasive surgical procedures. They are primarily used to cut the mucosal lining of the human body cavity and precisely dissect tumors therein while ensuring that surrounding tissue is not damaged.

[0003] However, traditional electrode cutters have significant limitations. Their electrode tips are fixed in length and cannot be flexibly adjusted to suit surgical needs, which, to a certain extent, affects the convenience and precision of surgical procedures. This technical shortcoming urgently needs to be improved to further enhance the clinical effectiveness of endoscopic surgery. Summary of the Invention

[0004] The purpose of the present invention is to provide a surgical electrode knife to alleviate the technical problem in the prior art that the electrode knife head of the electrode knife is fixed in length and the extension length cannot be adjusted.

[0005] The surgical electrode knife provided by the present invention comprises: an operating component, an electrode component and a conveying component; The operating component is used to connect with the conveying component; The delivery assembly has an energy transfer portion; The electrode assembly is disposed through the end of the conveying assembly away from the operating assembly; The electrode assembly is connected to the energy transmission part, and the operating assembly is configured to drive the electrode assembly to rotate along its own axis through the energy transmission part, so that the electrode assembly can extend or retract relative to the conveying assembly.

[0006] In an alternative embodiment, The electrode assembly includes an electrode body; At least a portion of the outer periphery of the electrode body is provided with one or more spirally arranged raised edges, and any angle plane where the axis of the electrode body is located has at least one raised edge.

[0007] In an alternative embodiment, The conveying assembly includes a shell body, a connecting joint and a limiter; The energy transmission part is disposed in the housing body, and an end of the energy transmission part close to the electrode assembly is connected to the connection joint, and the connection joint is used to connect the energy transmission part and the electrode assembly; The limiting member is arranged at one end of the shell body away from the operating component, the electrode body is passed through the limiting member, and the inner wall of the limiting member is provided with a threaded section that cooperates with the raised edge, so that when the electrode assembly rotates along itself, the electrode assembly can move telescopically relative to the limiting member.

[0008] In an alternative embodiment, The operating assembly includes a rotating component and a fixed component; The rotating member is used for the energy transmission part to pass through, and the rotating member is connected to the energy transmission part; The fixed member is threadably connected to the rotating member so that the rotating member can rotate relative to the fixed member.

[0009] In an alternative embodiment, The rotating member includes a rotating portion and a gripping portion; The rotating portion is threadedly connected to the fixing member, and a first scale line is provided on the outer surface of the rotating portion along the axial direction; The holding portion is connected to an end of the rotating portion away from the fixing member, and the holding portion and the rotating portion are surrounded to form a slot, and the slot is used for the end of the fixing member to extend into.

[0010] In an alternative embodiment, The operating assembly further includes a first liquid injection component; The electrode body is provided with a through hole along the axial direction, the through hole forming an inner cavity, and the energy transfer part is internally formed with a first liquid injection channel communicating with the inner cavity; The first liquid injection member is connected to the rotating part, and the first liquid injection member is configured to be able to communicate with the first liquid injection channel to inject liquid into the inner cavity through the first liquid injection channel.

[0011] In an alternative embodiment, The first liquid injection component includes a fixed joint, a connecting piece and an external joint; The fixed joint is fixed to the outer wall of the rotating member, the outer wall of the fixed joint extends outward to form a limiting protrusion, the inner wall of the connecting member is provided with a limiting groove, the limiting protrusion extends into the limiting groove, so as to limit the movement of the connecting member relative to the fixed joint along the axis; The end of the external connector extends into the connecting piece and is threadedly connected to the connecting piece; A joint connecting portion is extended from the inner wall of the connecting piece, and the joint connecting portion is communicated with the external joint and the fixed joint respectively, so as to connect the external joint with the fixed joint.

[0012] In an alternative embodiment, The fixing component is provided with an energy input portion, which is connected to the energy transmission portion and is used to transmit energy to the raised edge through the energy transmission portion.

[0013] In an alternative embodiment, There is a distance between the shell body and the energy transfer part to form a second liquid injection channel; The fixing component is provided with a second liquid injection component, which is connected to the second liquid injection channel. The second liquid injection component is used to transport liquid to the second liquid injection channel. The liquid in the second liquid injection channel flushes the outer surface of the electrode body and the raised edge along the inner wall of the limiter.

[0014] In an alternative embodiment, The end of the electrode body away from the delivery assembly has an end cap; The electrode body and the end cap are made of insulating materials, and the raised edges are made of conductive materials; The outer surface of the electrode body is provided with a second scale line along the axial direction. In the surgical electrode knife provided in this embodiment, the user drives the energy transmission part to rotate through the operating component. Since the energy transmission part is connected to the electrode assembly, it drives the electrode assembly to rotate together, and the operating component drives the electrode assembly to extend or retract relative to the delivery assembly, allowing the user to freely change the extension length of the electrode assembly, alleviating the technical problem of the electrode blade head in the prior art being fixed in length and unable to adjust the extension length. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a surgical electrode knife provided in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of an electrode body in a surgical electrode knife provided by an embodiment of the present invention; Figure 3 A schematic diagram of the front view structure of an electrode body in a surgical electrode knife provided by an embodiment of the present invention; Figure 4 for Figure 1 A magnified cross-sectional view of the structure at point A; Figure 5 A cross-sectional view of the structure of an operating component in a surgical electrode knife provided by an embodiment of the present invention; Figure 6 for Figure 5 Enlarged structural cross-sectional view at point C in the middle; Figure 7 for Figure 1 The enlarged structural cross-sectional view at point B in the middle; Figure 8 Schematic diagrams of the three-dimensional structures of various embodiments of the electrode body in the surgical electrode knife provided by the embodiment of the present invention; Figure 9 Schematic diagrams of the three-dimensional structures of two other implementations of the electrode body in the surgical electrode knife provided by the embodiments of the present invention; Figure 10 A schematic diagram of the three-dimensional structure of another embodiment of the electrode body in the surgical electrode knife provided by an embodiment of the present invention; Figure 11 A schematic diagram of the connection between the main electrode portion of the surgical electrode knife provided in an embodiment of the present invention and the spiral and the limiting member.

[0017] Icons: 10-first injection channel; 20-second injection channel; 100-operating component; 110-rotating member; 111-rotating part; 112-holding part; 113-slot; 114-first scale line; 120-fixing component; 121-energy access part; 122-shrapnel; 200-electrode assembly; 201-electrode body; 210-raised edge; 220-through hole; 230-end cap; 240-second scale line; 300-delivery component; 310-energy transfer part; 320-housing body; 330-connecting joint; 340-limiting member; 350-outer tube; 400-first injection component; 410-fixing joint; 411-limiting protrusion; 420-connecting member; 421-joint connecting part; 430-external joint; 500-second injection component. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] like Figure 1 As shown, the surgical electrode knife provided in this embodiment includes: an operating component 100, an electrode component 200 and a conveying component 300; the operating component 100 and the conveying component 300; the conveying component 300 has an energy transfer part 310; the electrode component 200 is inserted into the end of the conveying component 300 away from the operating component 100, and the electrode component 200 can freely extend or retract relative to the conveying component 300; the operating component 100 can drive the energy transfer part 310 to rotate along its own axis. Since the electrode component 200 is connected to the energy transfer part 310, the energy transfer part 310 drives the electrode component 200 to rotate along its own axis, so that the electrode component 200 can extend or retract relative to the conveying component 300.

[0023] The surgical electrode knife provided in this embodiment allows the user to rotate the energy transfer part 310 through the operating component 100. Since the energy transfer part 310 is connected to the electrode assembly 200, it drives the electrode assembly 200 to rotate together, thereby enabling the electrode assembly 200 to be extended or retracted relative to the conveying component 300 through the operating component 100, making it convenient for the user to freely change the extended length of the electrode assembly 200, thereby alleviating the technical problem in the prior art that the electrode head length of the electrode knife is fixed and the extended length cannot be adjusted.

[0024] Regarding the structure and shape of the electrode assembly 200, specifically: like Figure 2 、 Figure 3 As shown, the electrode assembly 200 includes an electrode body 201, and the outer peripheral portion of the electrode body 201 is provided with one or more raised edges 210 arranged in a spiral shape, and there is at least one raised edge 210 in any angle plane where the axis of the electrode body 201 is located, ensuring that there is at least one edge at each angle in the circumferential direction of the electrode body 201, forming a 360-degree circumferential edge structure. During clinical cutting, the edge contacts the tissue for the first time, the contact area is smaller, and the current density is greater, which can improve the cutting efficiency when the electrode is longer or thicker.

[0025] A through hole 220 is provided along the axis of the electrode body 201 . The through hole 220 is provided through the electrode body 201 to form an inner cavity for liquid flow, so as to provide liquid injection.

[0026] The end of the electrode body 201 away from the conveying component 300 has an end cap 230, wherein the outer diameter of the end cap 230 is larger than the outer diameter of the edge of the electrode body 201, and the outer diameter of the end cap 230 is larger than the aperture size of the through hole in the conveying component 300 for the electrode body 201 to pass through, thereby preventing the electrode body 201 from being completely retracted into the conveying component 300.

[0027] The electrode body 201 and the end cap 230 are set to insulating materials, the raised edge 210 is set to conductive material, and a second scale line 240 is set on the outer surface of the electrode body 201 along the axial direction. Through the second scale line 240, the user can judge the telescopic length of the electrode body 201.

[0028] like Figure 8 As shown, Figure 8 The invention includes five electrode assemblies 200 with different outer surface structures. The outer side of the electrode body 201 is spiral in shape and has multiple raised edges 210. Figure 11 As shown, the spiral can be a partial spiral on the periphery of the electrode body 201 or a spiral on the entire periphery. The end surface of the electrode body 201 away from the end cap 230 is a non-circular shape with a folded angle.

[0029] In addition, if Figure 9 As shown, there are two types of electrode assemblies 200 with different outer surface structures, both of which have only one raised edge 210. The left-side type has an equal pitch, and the right-side type has a non-equal pitch. It should be noted that if an electrode assembly 200 with a non-equal pitch is selected, the threaded section on the corresponding limiter 340 must be adapted thereto. Preferably, the raised edge 210 adopts an equal pitch structure.

[0030] The surface spiral of the electrode assembly 200 may adopt a segmented structure, for example Figure 10 As shown, the advantage of the segmented spiral structure is that it can form a linear moving segment, which facilitates and quickly adjusts the extension length of the electrode assembly 200.

[0031] Regarding the structure and shape of the conveying assembly 300, specifically: like Figure 4 As shown, the conveying component 300 includes a shell body 320, a connecting joint 330 and a limiter 340; the energy transfer part 310 is arranged in the shell body 320, the end of the energy transfer part 310 is connected to one end of the connecting joint 330, and the other end of the connecting joint 330 is sleeved on the electrode body 201 and contacts the raised edge 210 on the electrode body 201 to transfer energy to the raised edge 210. The connecting joint 330 can be specifically set as a connecting tube, and the inner wall of the connecting tube can use a snap or threaded method to connect the energy transfer part 310 and the electrode body 201.

[0032] The limiting member 340 is arranged at one end of the shell body 320 away from the operating component 100. The limiting member 340 is specifically arranged as a limiting block. The electrode body 201 is passed through the limiting member 340, and the inner wall of the limiting member 340 is provided with a threaded section that cooperates with the raised edge 210, so that when the electrode body 201 rotates along itself, the electrode body 201 can be telescopically moved relative to the limiting member 340.

[0033] Regarding the structure and shape of the operating component 100, specifically: like Figure 5 As shown, the operating component 100 includes a rotating member 110 and a fixed member 120; the rotating member 110 is sleeved on the energy transfer part 310, and the rotating member 110 is connected to the energy transfer part 310. Specifically, there is a through hole inside the rotating member 110, the energy transfer part 310 is located in the through hole, and the inner wall of the through hole is fixedly connected to the energy transfer part 310, so that the rotation of the rotating member 110 drives the energy transfer part 310 to rotate together.

[0034] The fixing member 120 is threadably connected to the rotating member 110 , so that the rotating member 110 can rotate relative to the fixing member 120 .

[0035] The rotating member 110 includes a rotating portion 111 and a gripping portion 112; the rotating portion 111 is threadedly connected to the fixed member 120, and a first scale line 114 is provided on the outer surface of the rotating portion 111 along the axial direction. The first scale line 114 allows the user to know the telescopic or extended length of the rotating portion 111 relative to the fixed member 120, and thus know the extended or retracted length of the electrode body 201.

[0036] The holding portion 112 is connected to one end of the rotating portion 111 away from the fixed member 120, and the holding portion 112 and the rotating portion 111 are surrounded by a slot 113. The slot 113 is used for the end of the fixed member 120 to extend into. Specifically, the holding portion 112 is formed by extending the outer surface of the rotating portion 111 outward for a section and then extending along the axis of the rotating portion 111, so that there is a gap between the holding portion 112 and the rotating portion 111. The gap forms the slot 113, which ensures that when the holding portion 112 is used to drive the rotating portion 111 to rotate, the end of the fixed member 120 can be extended into the slot 113. The setting of the slot 113 not only provides space for the end of the fixed member 120 to extend into, but also serves to limit the length of the extension.

[0037] Based on the above, if Figure 1 、 Figure 4 and Figure 5 As shown, in an optional embodiment, the operating component 100 also includes a first liquid injection component 400; a first liquid injection channel 10 connected to the inner cavity is formed inside the energy transfer part 310; the first liquid injection component 400 is connected to the rotating part 111, and the first liquid injection component 400 can be connected to the first liquid injection channel 10 to inject liquid into the inner cavity through the first liquid injection channel 10, and then the liquid flows out along the inner cavity to perform an injection effect.

[0038] In addition, an outer tube 350 can be optionally provided inside the shell body 320. Since the energy transfer part 310 is a hollow structure, a first liquid injection channel 10 is formed inside, and the energy transfer part 310 needs to be conductive, the energy transfer part 310 is set to a metal material, and the outer tube 350 is sleeved on the energy transfer part 310, thereby wrapping and sealing the engraved seam on the energy transfer part 310.

[0039] like Figure 6 As shown, the first liquid injection component 400 specifically includes a fixed joint 410, a connecting member 420 and an external joint 430; the fixed joint 410 is fixed on the outer wall of the end of the holding portion 112 away from the rotating portion 111, and the fixed joint 410 is located at the axial position of the energy transfer portion 310, and the outer wall of the fixed joint 410 extends outward to form a limiting protrusion 411, and the inner wall of the connecting member 420 is provided with a limiting groove, and the limiting protrusion 411 extends into the limiting groove to limit the movement of the connecting member 420 along the axis relative to the fixed joint 410, so that the fixed joint 410 can rotate freely relative to the connecting member 420, thereby realizing that the rotating component 110 can rotate freely without affecting the injection of the first liquid injection component 400.

[0040] In addition, a sealing ring may be installed in the limiting groove to achieve a sealed connection between the limiting protrusion 411 and the limiting groove to prevent liquid from flowing into the limiting groove.

[0041] The external connector 430 is used to connect to an external liquid injection device. The end of the external connector 430 away from the external liquid injection device extends into the connector 420 and is threadedly connected to the connector 420. The inner wall of the connector 420 extends to form a connector connection portion 421. The external connector 430 is sleeved on the connector connection portion 421, and the connector connection portion 421 is connected to the fixed connector 410. The connection between the external connector 430 and the fixed connector 410 can be achieved through the connector connection portion 421.

[0042] In an optional embodiment, the fixed member 120 is provided with an energy access portion 121, one end of the energy access portion 121 has a connector for connecting to an external energy device, and the other end of the energy access portion 121 extends into the fixed member 120 and is connected to the energy transfer portion 310. The energy access portion 121 is used to transfer the energy generated by the external energy device to the energy transfer portion 310.

[0043] In addition, if Figure 7 As shown, the energy input portion 121 specifically includes a metal connecting portion and a metal spring 122. The metal connecting portion has a perforation for the energy transfer portion 310 to pass through, and a metal spring 122 with a certain elasticity is arranged inside the perforation to ensure that the metal spring 122 can be tightly attached to the energy transfer portion 310, thereby ensuring that the energy input portion 121 can smoothly transfer energy to the energy transfer portion 310.

[0044] In an optional embodiment, there is a distance between the shell body 320 and the energy transfer part 310, forming a second injection channel 20; the fixed component 120 is provided with a second injection component 500, and the second injection component 500 can be set as a joint, which is set on the surface of the fixed component 120. The external liquid enters the second injection channel 20 through the second injection component 500, and the liquid in the second injection channel 20 flushes the outer surface of the electrode body 201 and the raised edge 210 along the inner wall of the limiter 340.

[0045] The surgical electrode knife provided by the present invention has the following advantages: 1. The outer periphery of the electrode body 201 is provided with multiple spirally arranged raised edges 210. These edges are the first contact with tissue during clinical cutting. Due to the smaller contact area and higher current density, cutting efficiency can be improved even with longer or thicker electrodes. Every angle plane along the axis of the electrode body 201 has at least one raised edge 210, ensuring a 360-degree circumference. This allows the electrode to effectively cut in any direction, improving cutting uniformity and consistency.

[0046] 2. The energy transfer part 310 is driven to rotate by the operating component 100, thereby driving the electrode body 201 to rotate, so as to achieve the extension or retraction of the electrode body 201 relative to the conveying component 300, and the extension or retraction length is controlled in conjunction with the first scale line 114 and the second scale line 240, which solves the problem of the fixed and unadjustable length of the electrode tool in the prior art, provides higher flexibility and adaptability, simplifies the surgical process, and improves surgical accuracy and efficiency.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A surgical electrode knife, characterized in that: include: An operating assembly (100), an electrode assembly (200), and a transport assembly (300); The operating component (100) is used to connect to the conveying component (300); The delivery assembly (300) has an energy transfer portion (310); The electrode assembly (200) is disposed through the end of the conveying assembly (300) away from the operating assembly (100); The electrode assembly (200) is connected to the energy transfer part (310), and the operating assembly (100) is configured to be able to drive the electrode assembly (200) to rotate along its own axis through the energy transfer part (310), so that the electrode assembly (200) can extend or retract relative to the conveying assembly (300).

2. The surgical electrode knife according to claim 1, characterized in that: The electrode assembly (200) comprises an electrode body (201); At least a portion of the outer periphery of the electrode body (201) is provided with one or more spirally arranged raised edges (210), and any angle plane where the axis of the electrode body (201) is located has at least one raised edge (210).

3. The surgical electrode knife according to claim 2, characterized in that: The conveying assembly (300) comprises a shell body (320), a connecting joint (330) and a limiting member (340); The energy transfer part (310) is disposed in the housing body (320), and an end of the energy transfer part (310) close to the electrode assembly (200) is connected to the connection joint (330), and the connection joint (330) is used to connect the energy transfer part (310) and the electrode assembly (200); The limiting member (340) is arranged at one end of the shell body (320) away from the operating assembly (100), the electrode body (201) is passed through the limiting member (340), and the inner wall of the limiting member (340) is provided with a threaded section that matches the raised edge (210), so that when the electrode assembly (200) rotates along itself, the electrode assembly (200) can move telescopically relative to the limiting member (340).

4. The surgical electrode knife according to claim 3, characterized in that: The operating assembly (100) comprises a rotating component (110) and a fixed component (120); The rotating member (110) is used for the energy transfer part (310) to pass through, and the rotating member (110) is connected to the energy transfer part (310); The fixed member (120) is threadedly connected to the rotating member (110) so that the rotating member (110) can rotate relative to the fixed member (120).

5. The surgical electrode knife according to claim 4, characterized in that: The rotating member (110) comprises a rotating portion (111) and a gripping portion (112); The rotating portion (111) is threadedly connected to the fixed component (120), and a first scale line (114) is provided on the outer surface of the rotating portion (111) along the axial direction; The holding portion (112) is connected to an end of the rotating portion (111) away from the fixed member (120), and the holding portion (112) and the rotating portion (111) are surrounded to form a slot (113), and the slot (113) is used for the end of the fixed member (120) to extend into.

6. The surgical electrode knife according to claim 5, characterized in that: The operating assembly (100) further includes a first liquid injection component (400); The electrode body (201) is provided with a through hole (220) along the axial direction, the through hole (220) forms an inner cavity, and a first injection channel (10) communicating with the inner cavity is formed inside the energy transfer part (310); The first liquid injection member (400) is connected to the rotating part (111), and the first liquid injection member (400) is configured to be able to communicate with the first liquid injection channel (10) so as to inject liquid into the inner cavity through the first liquid injection channel (10).

7. The surgical electrode knife according to claim 6, characterized in that: The first liquid injection component (400) comprises a fixed joint (410), a connecting piece (420) and an external joint (430); The fixed joint (410) is fixed to the outer wall of the rotating member (110), the outer wall of the fixed joint (410) extends outward to form a limiting protrusion (411), the inner wall of the connecting member (420) is provided with a limiting groove, and the limiting protrusion (411) extends into the limiting groove to limit the movement of the connecting member (420) along the axis relative to the fixed joint (410); The end of the external connector (430) extends into the connecting piece (420) and is threadedly connected to the connecting piece (420); The inner wall of the connecting member (420) is extended to form a joint connecting portion (421), and the joint connecting portion (421) is respectively connected to the external joint (430) and the fixed joint (410) to connect the external joint (430) with the fixed joint (410).

8. The surgical electrode knife according to claim 4, characterized in that: The fixing component (120) is provided with an energy access portion (121), and the energy access portion (121) is connected to the energy transfer portion (310) and is used to transmit energy to the raised edge (210) through the energy transfer portion (310).

9. The surgical electrode knife according to claim 4, characterized in that: There is a distance between the shell body (320) and the energy transfer portion (310), forming a second liquid injection channel (20); The fixing member (120) is provided with a second liquid injection member (500), the second liquid injection member (500) is connected to the second liquid injection channel (20), and the second liquid injection member (500) is used to transport liquid to the second liquid injection channel (20), and the liquid in the second liquid injection channel (20) flushes the outer surface of the electrode body (201) and the raised edge (210) along the inner wall of the limiter (340).

10. The surgical electrode knife according to claim 3, characterized in that: The end of the electrode body (201) away from the delivery assembly (300) has an end cap (230); The electrode body (201) and the end cap (230) are configured as insulating materials, and the raised edge (210) is configured as conductive material; The outer surface of the electrode body (201) is provided with a second scale line (240) along the axial direction.

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