Electrosurgical instrument for eliminating operation smoke and preparation method thereof

Abstract

The invention provides an electrosurgical instrument for eliminating operation smoke and a preparation method of the electrosurgical instrument, belongs to the field of medical instruments, and aims to coat a cutter head and a side surface of a traditional electrosurgical instrument with a designed coating material. The method comprises the following steps: 1, cleaning the surface of a tool bit of a metal electrode receiving a coating, and improving interface bonding between the coating and the surface of the tool bit of the metal electrode; 2, preparing a coating material through a material growth process; and 3, coating the surface of the cleaned electrode tool bit with a coating material to form the electrosurgical instrument based on the smokeless electrode. The thickness of the coating is the sum of the thicknesses of the coatings covering the upper surface and the lower surface, and the thickness is required to be nanoscale. The coating material disclosed by the invention can realize uniform heating of human tissues, eliminate operation smoke and improve safety; the structure is simple, operation is convenient, and real-time performance is high.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, and more specifically, relates to an electrosurgical instrument for eliminating surgical smoke and its preparation method. Background Technology

[0002] In recent years, electrosurgical instruments such as high-frequency electrosurgical scalpels, LEEP knives, and endoscopic electrosurgical knives have been widely used in clinical practice. These instruments use high-frequency current generated at the electrode tips to heat tissue, achieving the purpose of cutting and coagulating body tissues. However, during the use of electrosurgical instruments, high temperatures produce a smoky substance known as surgical smoke, which is caused by the incomplete combustion of proteins, fats, and other components of human tissue. Surgical smoke is an air pollutant, containing chemical components such as polycyclic aromatic hydrocarbons, benzene, acrylonitrile, hydrogen cyanide, and carbon monoxide. Hydrogen cyanide released by acrylonitrile is colorless and toxic and can be absorbed by the body through the skin, lungs, and digestive tract. Benzene is carcinogenic, and carbon monoxide can compete with oxygen in the blood for binding to hemoglobin, leading to tissue hypoxia. Surgical smoke has cytotoxicity and the potential to induce mutations. It may also contain infectious viruses and bacteria such as HIV and human papillomavirus. Long-term exposure to this pollutant can easily threaten the health of medical personnel.

[0003] Currently, there are two main protective measures for surgical smoke in operating rooms: one is to use smoke extraction equipment to remove the generated smoke; the other is to take personal protective measures, such as wearing goggles and N95 or N100 masks. However, both methods have certain drawbacks. Currently, most operating rooms use smoke extraction equipment to remove surgical smoke. Specifically, a surgical assistant uses a smoke suction head to continuously follow the surgeon's instruments to remove the smoke. This method has the following problems: it wastes manpower, as the assistant needs to constantly hold the suction head and follow the surgeon to remove smoke, preventing timely cooperation with the surgery; the suction head is generally quite large, which can interfere with or obstruct the surgeon's vision; once the suction head is put down to cooperate with the surgery, the generated smoke is released into the operating room, causing contamination. Regarding personal protective measures, N95 or N100 masks only protect against respiratory infections, and wearing goggles cannot eliminate the visual interference caused by smoke, which can affect the progress and safety of the surgery. Summary of the Invention

[0004] The purpose of this invention is to overcome the deficiencies in existing surgical smoke diffusion and pollution prevention technologies, and to provide an electrosurgical instrument for eliminating surgical smoke and its preparation method. This invention adds a coating material with high thermal conductivity, low friction coefficient, and high temperature resistance to the metal electrode tip of existing electrosurgical instruments such as high-frequency electrosurgical scalpels, LEEP knives, and endoscopic electrosurgical knives to eliminate harmful surgical smoke generated during surgery.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for preparing an electrosurgical instrument for eliminating surgical smoke, comprising coating the tip and sides of a conventional electrosurgical instrument with a designed coating material, specifically including the following steps:

[0007] The first step is to clean the surface of the metal electrode tip to remove organic and inorganic impurities and improve the interfacial bonding between the coating and the metal electrode tip surface.

[0008] The second step is to prepare the coating material;

[0009] Graphene, carbon nanotubes, metal nanowires, and diamond-coated materials are prepared using material growth processes.

[0010] The third step involves applying a coating material to the cleaned electrode tip surface to form an electrosurgical instrument based on a smokeless electrode. Specifically:

[0011] The coating material covers the entire surface of the metal electrode tip, with coatings on both sides of the tip and the side surfaces of the tip also covered by the coating. The coating is in contact with human tissue.

[0012] The thickness of the coating is the sum of the thicknesses of the coatings covering the upper and lower surfaces, and the thickness requirement is in the nanometer range.

[0013] Furthermore, the material growth process in the second step includes chemical vapor deposition, liquid phase exfoliation, epitaxy, hydrothermal methods, and magnetron sputtering. Specifically:

[0014] (1) Graphene was prepared by chemical vapor deposition or liquid phase exfoliation; wherein the thermal conductivity of graphene was 5300 W / m·K, the friction coefficient was 0.004, and the melting point was 3000℃.

[0015] Chemical vapor deposition (CVD): Using polycrystalline nickel as the growth substrate and methane as the carbon source, the growth temperature is 1000℃ to obtain graphene films. Liquid phase exfoliation: Graphite powder is added to N-methylpyrrolidone (NMP), and NaOH is added to improve the exfoliation efficiency of graphene. After ultrasonic treatment, the supernatant is collected by centrifugation to obtain a multilayer graphene solution.

[0016] (2) Carbon nanotubes were prepared by chemical vapor deposition; wherein the carbon nanotubes had a thermal conductivity of 2000 W / m·K, a friction coefficient of 0.03, and a melting point of 3550℃;

[0017] Carbon nanotubes were obtained by using silica as the growth substrate, Fe / MgO as the catalyst, and acetylene and benzene as the carbon source.

[0018] (3) Metal nanowires were prepared by hydrothermal method; wherein the thermal conductivity of the metal nanowires was ≥400W / m·K, the friction coefficient was 0.03, and the melting point was ≥500℃;

[0019] (4) Diamond was prepared by magnetron sputtering; wherein, silicon carbide has a thermal conductivity of 83 W / m·K, a friction coefficient of <0.1, and a melting point of 2700℃; diamond has a thermal conductivity of 3000 W / m·K, a friction coefficient of <0.1, and a melting point of 3550℃; titanium nitride has a thermal conductivity of 30 W / m·K, a friction coefficient of <0.1, and a melting point of 2950℃.

[0020] Furthermore, in the second step, the metal in the metal nanowire is one or a combination of several of the following: Pt, Al, Au, Ag, Ni, Fe, Sn, Mn, W, Cu, Ti, Mo, and Zn.

[0021] Furthermore, in the third step, the coating method includes processes such as wet transfer, spin coating, drop coating, and deposition.

[0022] Furthermore, in the third step, the coating thickness on the cutting head is 100-150 nanometers, and the coating thickness on the side surface of the cutting head is 80-180 nanometers. The coating shape is controllable and suitable for electrodes and cutting heads of various shapes and sizes.

[0023] An electrosurgical instrument for eliminating surgical smoke is prepared using the above method, specifically by coating the tip and sides of a traditional electrosurgical instrument with a coating material; the electrosurgical instrument includes an insulating shell, a metal electrode, a tip at the end of the metal electrode, a coating material, connecting wires, and a high-frequency generator.

[0024] In the conventional electrosurgical instrument: the insulating outer shell includes an insulating forceps handle 4 and a forceps handle sleeve 5, wherein the forceps handle sleeve 5 is fitted onto the end of the insulating forceps handle 4 to fix the insulating forceps handle 4, which serves as the forceps body. The metal electrode includes a positive electrode 2 and a negative electrode 3, made of metal and symmetrically arranged; the metal electrode is located at the other end of the insulating forceps handle 4 and is connected to the high-frequency generator of the electrosurgical system via a connecting wire. The generated high-frequency current passes through the conductive electrode part to generate high temperature, which is conducted to the blade tip and the coating 1 on the surface of the blade tip, and finally conducted to the human tissue in contact with the coating 1 on the surface of the blade tip. After the current flows through the human body, it returns to the high-frequency generator through the negative electrode plate in contact with the human body.

[0025] Furthermore, the electrode and the electrode tip are made of metallic materials, including stainless steel, tungsten, tungsten alloys, etc.

[0026] Furthermore, the aforementioned traditional electrosurgical instruments include high-frequency electrosurgical units, LEEP knives, endoscopic electrosurgical units, and other similar instruments.

[0027] Furthermore, the metal electrode body can be a retractable electrode, a pluggable electrode, or a regular electrode.

[0028] The design principle of this invention is as follows:

[0029] This invention employs a material growth process to coat the tip of the metal electrode of a traditional electrosurgical instrument with a coating that has high thermal conductivity, low coefficient of friction, high temperature resistance, and high flexibility. This achieves uniform heating of human tissue and avoids the adhesion of charred tissue, thereby eliminating harmful surgical fumes generated during the operation. The coating is in contact with human tissue.

[0030] The purpose of this invention is to address the problem of surgical smoke diffusion and pollution by proposing a novel approach: eliminating the generation of surgical smoke during the use of electrosurgical instruments. Surgical smoke obstructs the surgeon's vision, produces unpleasant odors, and releases toxic and harmful substances into the air, posing long-term potential health risks. The technical solution of this invention is to develop an electrosurgical instrument based on smokeless electrodes, coating its metal electrode tip with a thin film material that has high thermal conductivity, a low coefficient of friction, and high-temperature resistance. The excellent thermal conductivity ensures more uniform heating of tissue, resulting in less charring and reduced smoke. Furthermore, the extremely low coefficient of friction prevents the electrode tip from adhering to human tissue, thus significantly reducing the amount of charred material adhering to the metal electrode tip, thereby greatly reducing the smoke generated during surgery. The high-temperature resistance extends the instrument's lifespan. Eliminating surgical smoke significantly reduces interference with the surgeon's vision, eliminates the need for smoke extraction, and speeds up the surgical process. This invention has a simple structure, low cost, and high practicality, effectively protecting the health and safety of patients and medical staff.

[0031] The beneficial effects of this invention are as follows:

[0032] This invention primarily eliminates surgical fumes generated by the high-temperature vaporization of electrosurgical instruments during use, thereby avoiding the health hazards of fumes to patients and medical staff, and eliminating the time spent on fume extraction during surgery, thus improving surgical safety. It also prevents the adhesion of human tissue to the instrument's electrode tip and the formation of eschar, extending the instrument's lifespan, accelerating the surgical process, resulting in less damage during surgery and improved surgical safety. Without altering the structure of commonly used electrosurgical instruments and the main unit, it provides a new instrument that reduces surgical fumes, with advantages such as simple structure, ease of operation, and strong real-time performance. Attached Figure Description

[0033] Figure 1 A schematic diagram of the overall structure of an electrosurgical instrument based on a smokeless electrode provided by the present invention;

[0034] Figure 2This is a schematic diagram showing the transfer of graphene coating to the surface of the cutting tip at the end of the metal electrode;

[0035] Figure 3 This is a schematic diagram of interlayer sliding of graphene under stress.

[0036] In the figure: 1. Electrode tip coating, 2. Positive metal electrode, 3. Negative metal electrode, 4. Insulating tweezer handle, 5. Tweezer handle sleeve. Detailed Implementation

[0037] To make the technical solution of the present invention clearer, further explanation is provided below in conjunction with the technical solution and accompanying drawings.

[0038] like Figure 1 The above is a schematic diagram of the overall structure of an electrosurgical instrument with a smokeless electrode. The electrosurgical instrument also includes a high-frequency generator. Figure 1 (Not shown) The high-frequency generator provides a high-frequency current to drive and control the metal electrodes, thereby transferring energy to the metal electrodes and using radio frequency signals for electrocautery or simultaneous tissue cutting and hemostasis. The positive and negative electrodes 2 and 3 of the metal electrodes are made of conductive metal materials (stainless steel, tungsten, tungsten alloy, etc.), and one end is an insulating shell (tweezers handle) 4. The insulating shell is made of insulating material and is the hand-held manipulation part, with a tweezers handle sleeve 5 on it. The surface of the cutting tip at the end of the metal electrodes 2 and 3 is covered with a thin film material coating 1 with high thermal conductivity, non-stick, and high temperature resistance, applied by wet transfer, spin coating, drop coating, or deposition processes.

[0039] First, the surfaces of the metal electrodes 2 and 3 receiving the coating are pretreated to improve the interfacial bonding between the coating 1 and the surfaces of the metal electrodes 2 and 3, which can significantly improve the adhesion of the coating to the metal surface. This mainly involves cleaning the surfaces of the metal electrode tips to remove organic and inorganic impurities. The electrodes are then ultrasonically treated sequentially with acetone solution, isopropanol solution, and deionized water. The ultrasonic treatment power, temperature, and time for the three solutions are the same: 80W, room temperature, and 15 minutes, respectively.

[0040] Then, coating materials such as graphene, carbon nanotubes, metal nanowires, silicon carbide, diamond, and titanium nitride are prepared through growth processes.

[0041] (1) One method for preparing graphene is chemical vapor deposition, using 300 nm thick polycrystalline nickel as the growth substrate, methane as the carbon source, and a growth temperature of 1000 °C to obtain a 100-layer graphene film with a thickness of 35 nm. Another method for preparing graphene is liquid phase exfoliation technology. The surface energy of the organic solvent N-methyl-pyrrolidone (NMP) is matched with that of graphene. Then, the inorganic salt NaOH is added to improve the exfoliation efficiency of graphene. The graphite powder is gently ultrasonically treated in NMP and NaOH at a power of 40 W for 30 min, and then centrifuged at 500 r / min for 90 min. The supernatant is taken to obtain a multilayer graphene solution with a concentration of 5 mg / mL.

[0042] (2) The carbon nanotubes were also prepared by chemical vapor deposition. A 300 nm thick silica substrate was used as the growth substrate, Fe / MgO was used as the catalyst, acetylene and benzene were used as the carbon source, the growth temperature was 800 °C, the pressure was 1 atm, the growth time was 20-30 min, and the thickness was 50 nm.

[0043] (3) The preparation method of metal (one or a combination of Pt, Al, Au, Ag, Ni, Fe, Sn, Mn, W, Cu, Ti, Mo, Zn) nanowires is hydrothermal method. Taking the preparation of copper nanowires as an example, 1.7g of copper chloride dihydrate, 4g of glucose and 14g of hexadecylamine are dissolved in water, stirred for 12 hours, heated at 120℃ for 6 hours, cooled and centrifuged, and dispersed in isopropanol solution to obtain copper nanowires.

[0044] (4) The preparation method of silicon carbide, diamond and titanium nitride is magnetron sputtering. Taking the preparation of silicon carbide as an example, high-purity silicon wafers are used as the target source, methane is used as the reaction gas and argon is used as the sputtering gas. Silicon carbide thin films are obtained under the conditions of 0.4 mTorr and 850 °C.

[0045] Finally, the coating material is applied to the cleaned electrode tip surface using one of the following processes: wet transfer of thin film, drop coating, spin coating, or deposition, to form an electrosurgical instrument based on a smokeless electrode.

[0046] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0047] Example 1:

[0048] An electrosurgical device based on a graphene-coated smokeless electrode, such as Figure 1 As shown, a highly thermally conductive, non-stick, and high-temperature resistant graphene coating is applied to the entire outer surface of the electrode tip of the electrosurgical instrument (high-frequency electrosurgical unit), as detailed below:

[0049] First, large-area, high-quality 100-layer graphene was grown using chemical vapor deposition. Then, the multilayer graphene was transferred and coated onto the upper and lower surfaces of the electrode tip using thin-film transfer techniques such as wet transfer and spin coating. A schematic diagram of the wet transfer process is attached. Figure 2 As shown. The dimensions of the graphene are consistent with the dimensions and shape of the electrode; the thickness of the graphene is 120 nanometers (100 layers of graphene are coated on the upper and lower surfaces of the electrode). The nanometer-sized thickness helps to strengthen the interaction between the coating and the substrate and reduce wear.

[0050] The graphene coating is used to contact human tissue. The instrument electrode is connected to the high-frequency generator of the electrosurgical system via a cable. The high-frequency generator generates high-frequency current and high temperature, which are conducted to the blade and graphene coating through the heat-conducting metal electrode. The graphene coating has good thermal conductivity, and the high temperature is evenly conducted to the human tissue in contact with the graphene coating to complete the cutting or coagulation function, while reducing partial charring and smoke diffusion caused by uneven heating.

[0051] The multilayer graphene coating has low surface roughness, and the layers are connected by van der Waals forces. During use, when the instrument electrode is subjected to external forces, the friction between the human tissue and the rough surface of the metal electrode is transformed into sliding between the graphene layers, thus preventing tissue adhesion. A schematic diagram is attached. Figure 3 As shown, because there is no charred tissue adhering to the surface of the instrument electrode, surgical fumes generated by continued heating of the charred tissue are avoided.

[0052] Example 2:

[0053] Smokeless electrosurgical instruments based on carbon nanotube-coated electrodes have a highly thermally conductive, anti-adhesive, and high-temperature-resistant carbon nanotube coating covering the entire outer surface of the electrode tip of the electrosurgical instrument (high-frequency electrosurgical unit), as detailed below:

[0054] First, a 5 cm × 5 cm, 100 nm thick carbon nanotube film was grown using chemical vapor deposition, and then the carbon nanotube film was cut to match the size and shape of the electrode tip. Next, the carbon nanotube film was transferred onto the upper and lower surfaces of the electrode tip using a wet transfer technique.

[0055] The carbon nanotube coating is 100 nanometers thick (a 50-nanometer thick carbon nanotube film is transferred on the upper and lower surfaces of the electrode). The nanometer-sized thickness helps to enhance the interaction between the coating and the substrate and reduce wear.

[0056] Example 3:

[0057] The electrosurgical instrument based on the copper nanowire-coated smokeless electrode has a copper nanowire coating that covers the entire outer surface of the electrode tip of the electrosurgical instrument (high-frequency electrosurgical unit), as detailed below:

[0058] First, using a hydrothermal method, 1.7 g of copper chloride dihydrate, 4 g of glucose, and 14 g of hexadecylamine were dissolved in water, stirred for 12 hours, and heated at 120°C for 6 hours. After cooling and centrifugation, the solution was dispersed in isopropanol solution to obtain a copper nanowire floating liquid. Then, the copper nanowire floating liquid was drop-coated onto the upper surface of the electrode tip using a drop-coating method. After evaporation and curing at room temperature, the copper nanowire floating liquid was drop-coated onto the lower surface of the electrode tip again using the drop-coating method, and then evaporated and cured at room temperature.

[0059] The thickness of the copper nanowire coating is 150 nanometers. The nanometer-sized thickness helps to enhance the interaction between the coating and the substrate and reduce wear.

[0060] Example 4:

[0061] Electrosurgical instruments based on silicon carbide-coated smokeless electrodes have a highly thermally conductive, anti-adhesive, and high-temperature resistant silicon carbide coating covering the entire outer surface of the electrode tip of the electrosurgical instrument (high-frequency electrosurgical unit), as detailed below:

[0062] First, place the electrode in the cavity of the magnetron sputtering apparatus, maintaining a cavity vacuum of 10. -5 A high-purity silicon carbide target source was loaded, and a silicon carbide thin film was directly deposited on the surface of the electrode tip using magnetron sputtering. Then, the cavity of the magnetron sputtering apparatus was opened, the reverse side of the electrode was facing upwards, and the cavity vacuum was maintained at 10 Pa. -5 Pa, using magnetron sputtering, directly deposits a silicon carbide thin film on the lower surface of the electrode tip.

[0063] The thickness of the silicon carbide coating is 150 nanometers. This nanometer-sized thickness helps to enhance the interaction between the coating and the substrate and reduce wear.

[0064] This invention primarily addresses the problem of excessive surgical fumes generated during the use of electrosurgical instruments due to incomplete combustion of proteins, fats, and other components caused by high temperatures applied to human tissue, thus affecting the health of medical personnel. The advantages of this invention are: low cost, simple structure, convenient operation, and ease of manufacture; it effectively solves the problem of excessive fumes generated during the use of traditional electrosurgical instruments; it has minimal impact on the surgeon's field of vision and reduces the workload of surgical assistants, thereby improving work efficiency.

[0065] The above-described embodiments are merely illustrative of the implementation methods of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A method for preparing an electrosurgical instrument for eliminating surgical smoke, characterized in that a designed coating material is applied to the tip and sides of a conventional electrosurgical instrument, wherein... Includes the following steps: The first step is to clean the surface of the metal electrode tip to remove organic and inorganic impurities and improve the interfacial bonding between the coating and the metal electrode tip surface. The second step is to prepare the coating material; Graphene, carbon nanotubes, metal nanowires, and diamond-coated materials are prepared using material growth processes. The third step is to apply a coating material to the cleaned electrode tip surface to form an electrosurgical instrument based on a smokeless electrode. Specifically: The coating material covers the entire surface of the metal electrode tip, with coatings on both sides of the tip and the side surfaces of the tip also covered by the coating. The coating is in contact with human tissue. The thickness of the coating is the sum of the thicknesses of the coatings covering the upper and lower surfaces, and the thickness requirement is in the nanometer range.

2. The method for preparing an electrosurgical instrument for eliminating surgical smoke according to claim 1, characterized in that, The material growth processes in the second step include chemical vapor deposition, liquid phase exfoliation, epitaxy, hydrothermal methods, and magnetron sputtering; specifically: (1) Graphene was prepared by chemical vapor deposition or liquid phase exfoliation. Chemical vapor deposition: using polycrystalline nickel as the growth substrate, methane as the carbon source, and a growth temperature of 1000℃, graphene films are obtained; liquid phase exfoliation: graphite powder is added to N-methyl-pyrrolidone (NMP), and NaOH is added to improve the exfoliation efficiency of graphene. After ultrasonic treatment, the supernatant is collected by centrifugation to obtain a multilayer graphene solution. (2) Carbon nanotubes were prepared by chemical vapor deposition. Carbon nanotubes were obtained by using silica as the growth substrate, Fe / MgO as the catalyst, and acetylene and benzene as the carbon source. (3) Metal nanowires were prepared by hydrothermal method; (4) Diamond was prepared by magnetron sputtering.

3. The method for preparing an electrosurgical instrument for eliminating surgical smoke according to claim 1, characterized in that, In the second step, the metal in the metal nanowire is one or a combination of several of the following: Pt, Al, Au, Ag, Ni, Fe, Sn, Mn, W, Cu, Ti, Mo, and Zn.

4. The method for preparing an electrosurgical instrument for eliminating surgical smoke according to claim 1, characterized in that... In the third step, the coating method includes processes such as wet transfer, spin coating, drop coating, and deposition.

5. A method for preparing an electrosurgical instrument for eliminating surgical smoke according to claim 1, characterized in that, In the third step, the coating thickness on the cutting head is 100~150 nanometers, and the coating thickness on the side surface of the cutting head is 80~180 nanometers; the coating shape is controllable and suitable for electrodes and cutting heads of various shapes and sizes.

6. An electrosurgical instrument for eliminating surgical smoke, characterized in that, It is prepared by the method described in any one of claims 1-5, specifically by coating the tip and side of a conventional electrosurgical instrument with a coating material; the electrosurgical instrument includes an insulating shell, a metal electrode, a tip at the end of the metal electrode, a coating material, connecting wires, and a high-frequency generator.

7. An electrosurgical instrument for eliminating surgical smoke according to claim 6, characterized in that, In the conventional electrosurgical instrument: the insulating shell includes an insulating forceps handle 4 and a forceps handle sleeve 5, wherein the forceps handle sleeve 5 is fitted onto the end of the insulating forceps handle 4 to fix the insulating forceps handle 4, which serves as the forceps body; the metal electrode includes a positive electrode 2 and a negative electrode 3, which are made of metal and are symmetrically arranged; the metal electrode is located at the other end of the insulating forceps handle 4 and is connected to the high-frequency generator of the electrosurgical system through a connecting wire. The high-frequency current generated passes through the conductive electrode part to generate high temperature, which is conducted to the blade tip and the coating 1 on the surface of the blade tip, and finally conducted to the tissue in contact with the coating 1 on the surface of the blade tip; After the current flows through, it returns to the high-frequency generator via the negative electrode plate that is in contact with the human body.

8. An electrosurgical instrument for eliminating surgical smoke according to claim 6, characterized in that, The electrode and the electrode tip are made of metal materials, including stainless steel, tungsten, and tungsten alloys.

9. An electrosurgical instrument for eliminating surgical smoke according to claim 6, characterized in that, The traditional electrosurgical instruments mentioned include high-frequency electrosurgical units, LEEP knives, endoscopic electrosurgical units, and other instruments.

10. An electrosurgical instrument for eliminating surgical smoke as described in claim 6, characterized in that, The metal electrode body can be a retractable electrode, a pluggable electrode, or a regular electrode.

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