Endoscopic soft plasma radiofrequency ablation operation electrode tool bit

Abstract

The invention discloses an endoscopic soft plasma radiofrequency ablation operation electrode tool bit, and relates to the technical field of minimally invasive medical equipment, the endoscopic soft plasma radiofrequency ablation operation electrode tool bit comprises an electrode assembly, an outer insulation sheath tube and a handle, the electrode assembly comprises an electrode holder, four mounting grooves are formed in the front end of the electrode holder in the circumferential direction of the electrode holder, and an electrode slice is fixedly mounted in each mounting groove; a conductive wire is fixedly arranged at the bottom of each electrode plate, a water outlet hole is formed in the center of the electrode holder in the length direction in a penetrating mode, a slidable cutting electrode is arranged in the water outlet hole, a water outlet gap is reserved between the cutting electrode and the electrode holder, and a ball head is arranged at the front end of the cutting electrode. The ball head is used for lifting tissue in the operation process, and a plurality of water inlets are formed in the rear end of the electrode holder in the circumferential direction. By means of the arranged electrode assembly, minimally invasive operation can be achieved through an endoscope channel under endoscope visibility, and vaporization, cutting, ablation shrinkage and hemostasis can be carried out on pathological tissue parts such as digestive tract mucosa, respiratory tract mucosa and polyp.

Description

Technical Field

[0001] The present invention relates to the technical field of minimally invasive medical equipment, and in particular to an electrode blade for endoscopic soft plasma radiofrequency ablation surgery. Background Art

[0002] The plasma radiofrequency ablation electrode tip is a key instrument used in minimally invasive surgery. It generates a thin layer of low-temperature plasma by stimulating an electrolyte (normal saline) with a high-frequency alternating current. The kinetic energy of the charged particles in the plasma breaks molecular bonds in tissue, enabling precise cutting, ablation, and hemostasis of soft tissue. Its core advantage lies in its controllable energy output, allowing surgical procedures to be performed at low temperatures of 40-70°C, significantly minimizing thermal damage and protecting surrounding normal tissue.

[0003] In modern minimally invasive medicine, flexible endoscopic surgery, with its advantages of minimal trauma and rapid recovery, has become an important treatment for lesions of luminal organs such as the digestive tract and respiratory tract. Plasma radiofrequency ablation (RFA) technology is widely used for the treatment of mucosal lesions, polyps, and bleeding spots in the digestive and respiratory tracts due to its precise cutting, rapid hemostasis, and low-temperature therapeutic properties. However, existing RFA electrode tips present numerous technical challenges that remain to be addressed in flexible endoscopic surgery.

[0004] At present, traditional monopolar radiofrequency electrodes rely on negative plates on the surface of the body to form a current loop, which poses a risk of local burns caused by poor contact of the negative plates, and the energy transmission efficiency is greatly affected by the impedance of the human body; although some bipolar electrodes have eliminated the negative plates, they are still high-frequency surgical electrodes and non-plasma surgical electrodes, which need to convert electric frequency current into thermal energy for surgery. The electrode structure design is unreasonable, and a simple linearly distributed two-pole structure is used. Contact blind spots are prone to occur in complex anatomical structures, resulting in unstable energy output and affecting the treatment effect.

[0005] In addition, the existing electrode blades have a single function, mostly serving as hemostatic electrodes or cutting electrodes. When switching is required, two different electrode blades need to be replaced, and the inconvenience of replacing the blades will affect the treatment of the patient during the operation. Furthermore, the existing electrode blades have no water outlet function and no cooling function during energy output, which will cause thermal damage to a large area, thereby affecting the patient's recovery period and causing other diseases.

[0006] In view of this, the present invention is proposed to solve the above technical problems. Summary of the Invention

[0007] The purpose of the present invention is to provide an endoscopic soft plasma radiofrequency ablation surgical electrode blade to solve the technical problems in the prior art that the energy transmission efficiency of the electrode blade is greatly affected by the human body impedance, the thermal damage is large and the function is single.

[0008] The purpose of the present invention is to provide an electrode blade for endoscopic soft plasma radiofrequency ablation surgery, comprising: The electrode assembly includes an electrode holder, four mounting grooves are provided at the front end of the electrode holder along its circumferential direction, an electrode sheet is fixedly installed in each mounting groove, so that two adjacent electrode sheets are insulated, a conductive wire is fixedly provided at the bottom of each electrode sheet, a water outlet hole is provided in the center of the electrode holder along its length direction, a slidable cutting electrode is provided in the water outlet hole, and a water outlet gap is left between the cutting electrode and the electrode holder, a ball head is provided at the front end of the cutting electrode, and the ball head is used to lift tissue during surgery, a plurality of water inlets are provided at the rear end of the electrode holder in the circumferential direction, the water inlet extends to the front end of the electrode holder and passes through the side wall of the electrode holder to form a water outlet; An outer insulating sheath is sleeved on the plurality of conductive wires, and the rear end of the electrode holder is arranged in the outer insulating sheath; The handle includes a handle body, a movable push-pull switch is provided on the handle body, a cavity is provided inside the handle, the cutting electrode extends into the cavity at one end away from the electrode seat and passes through the lower end of the push-pull switch, a cable is also provided on the handle body, the end of the conductive wire away from the electrode sheet is electrically connected to the cable, the cable is electrically connected to the cutting electrode, and an electrically connected connector is provided at the end of the cable away from the handle body.

[0009] Furthermore, a sheath tube is connected to one end of the cavity close to the outer insulating sheath tube, and the sheath tube is partially sleeved on one end of the outer insulating sheath tube away from the electrode seat.

[0010] Furthermore, a fixed sleeve is provided on the cutting electrode in the cavity. The fixed sleeve passes through the lower end of the push-pull switch, and the outer peripheral wall of the fixed sleeve is fixedly connected to the push-pull switch.

[0011] Furthermore, a cutting electrode insulating tube is provided on the cutting electrode, and the cutting electrode insulating tube is used to electrically insulate the cutting electrode.

[0012] Furthermore, a three-way connector is provided in the cavity, one end of the three-way connector is connected to a water injection connector, the water injection connector extends into the sheath tube away from the end of the three-way connector and is connected to the end of the outer insulating sheath away from the electrode seat, and the other end of the three-way connector is connected to a water injection hose, which is used to transport the physiological saline medium; The end of the fixed sleeve facing away from the push-pull switch is installed on the three-way connector through a fixing nut; Cut the electrode through the tee connection.

[0013] Furthermore, the electrode sheet is made of stainless steel, and the electrode holder is made of ceramic.

[0014] Furthermore, an anti-adhesion coating is provided on the surface of the electrode sheet.

[0015] Furthermore, the electrode assembly is cylindrical, conical, elliptical and spherical; Among them, the spherical type is a conductive spherical type and a non-conductive spherical type.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects: 1. Through the electrode assembly, minimally invasive surgery can be achieved under endoscopic visualization through the endoscopic channel to vaporize, cut, ablate, shrink, and stop bleeding of diseased tissues such as the digestive tract and respiratory tract mucosa and polyps.

[0017] 2. By setting the electrode sheets, a bipolar circuit is formed between two adjacent electrode sheets. Compared with the prior art, the bipolar circuit in the embodiment of the present application has no negative plate connection and adopts a neutral connection to avoid the risk of poor contact and human burns. It is safer and more efficient. During clinical application, it can contact the lesion position at multiple angles to ensure effective contact with human tissue and achieve stable energy output.

[0018] 3. A three-pole circuit is formed by forming a loop with one of the four electrode sheets.

[0019] 4. By opening multiple water outlets on the circumference of the electrode holder and leaving a gap between the cutting electrode and the water outlet, the effect of synchronous water discharge during the operation can be achieved, solving the problems of dipping water before use and pulling out the water during use, improving the efficiency of the operation and ensuring the clinical effect.

[0020] 5. A water injection channel is formed by the provided handle, outer insulating sheath, water inlet and water outlet, which can achieve cooling for low-temperature surgery, ensure the moistening of the tissue surface, and stable energy output. At the same time, the wound surface can be flushed to ensure the cleaning of the surgical field, allowing for more comprehensive exploration and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings: Figure 1 A schematic structural diagram of an electrode tip for endoscopic soft plasma radiofrequency ablation surgery provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the electrode blade for endoscopic soft plasma radiofrequency ablation surgery provided in an embodiment of the present application, with the front handle body removed; Figure 3A schematic diagram of the installation of the electrode assembly and sheath tube of the electrode blade for endoscopic soft plasma radiofrequency ablation surgery provided in an embodiment of the present application; Figure 4 A schematic structural diagram of an electrode assembly for an endoscopic soft plasma radiofrequency ablation surgical electrode tip provided in an embodiment of the present application; Figure 5 for Figure 3 A magnified view of the structure at point A; Figure 6 A schematic structural diagram of an electrode blade for an endoscopic soft plasma radiofrequency ablation surgical electrode tip provided in an embodiment of the present application; Figure 7 This is a structural diagram of Example 2 of this application.

[0022] Figure numerals: 1. Outer insulating sheath; 2. Electrode assembly; 3. Handle; 4. Cable; 5. Connector; 6. Water injection hose; 7. Sheath tube; 8. Glue coating groove; 9. Handle; 10. Plastic-coated spring tube; 21. Electrode holder; 22. Electrode sheet; 23. Conductive wire; 24. Water inlet; 25. Cutting electrode; 26. Ball head; 27. Water outlet; 31. Handle body; 32. Push-pull switch; 33. Three-way connector.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be further described in detail with reference to the accompanying drawings.

[0025] Example 1 (hemostasis and cutting functions) See also Figures 1 to 7As shown, an embodiment of the present application provides an endoscopic soft plasma radiofrequency ablation surgical electrode head, comprising: an electrode assembly 2, an outer insulating sheath 1 and a handle 3, the electrode assembly 2 comprising an electrode seat 21, the front end of the electrode seat 21 being provided with four mounting grooves along its circumferential direction, an electrode sheet 22 being fixedly installed in each mounting groove, so that two adjacent electrode sheets 22 are insulated, a conductive wire 23 is fixedly provided at the bottom of each electrode sheet 22, a water outlet is provided through the center of the electrode seat 21 along its length direction, a slidable cutting electrode 25 is provided in the water outlet, and a gap is left between the cutting electrode 25 and the water outlet, a ball head 26 is provided at the front end of the cutting electrode 25, the ball head 26 is used to lift tissue during surgery, a plurality of water inlets 24 are provided in the circumferential direction of the rear end of the electrode seat 21, the water inlet 24 extends to the front end of the electrode seat 21 and passes through the side wall of the electrode seat 21 , forming a water outlet 27, the outer insulating sheath 1 is sleeved on multiple conductive wires 23, and the rear end of the electrode holder 21 is arranged in the outer insulating sheath 1, the handle 3 includes a handle body 31, and the handle body 31 is provided with a movable push-pull switch 32. The handle 3 has a cavity inside, and the cutting electrode 25 extends into the cavity at one end away from the electrode holder 21 and passes through the lower end of the push-pull switch 32. A cable 4 is also provided on the handle body 31, and the end of the conductive wire 23 away from the electrode sheet 22 is electrically connected to the cable 4. The conductive wire 23 is made of copper wire or stainless steel wire, and the cable 4 is electrically connected to the cutting electrode 25. An electrically connected connector 5 is provided at the end of the cable 4 away from the handle body 31. The cable 4 is made of silver-plated copper wire, connecting the cutting electrode 25 and the connector 5. A wire clamp is also provided on the inner wall of the handle body 31. The wire clamp is used to fix the cable 4 to prevent the cable 4 from being pulled outward and pulled off or broken.

[0026] It should be noted that, during installation, at least one glue coating groove 8 is provided on the side of the electrode sheet 22 close to the electrode holder 21. Glue is applied in the glue coating groove 8 and then snapped into the installation groove. The electrode sheet 22 is used to contact the human body to transfer energy to achieve tissue ablation and hemostasis. The electrode holder 21 is made of ceramic material and is used to install and fix the electrode sheet 22 and to insulate the electrode sheets 22. The conductive wire 23 is used to conduct electricity to the electrode sheet 22. The surface of the conductive wire 23 has an insulating layer, which is used for insulation between adjacent electrode sheets 22 and insulation between the cutting electrode 25. A vertical mounting hole is provided at the bottom of each electrode sheet 22. The conductive wire 23 is inserted into the mounting hole and is used. It is fixed by laser welding or soldering; the outer insulating sheath 1 is a PA tube or PTFE tube or PEBAX tube, which is bendable and has a certain stiffness and torsional rigidity. It can be bent at any angle and is used to electrically insulate the inside of the outer insulating sheath 1 to prevent thermal damage after a short circuit. It can be bent and curved through an endoscope, and can better point to and act on the site of the disease. At the same time, it also increases the surface smoothness and lubricity of the outer insulating sheath 1, making it easier to pass through an endoscope and a curved cavity; the cutting electrode 25 is made of stainless steel alloy or tungsten alloy, which is resistant to high temperature and oxidation, has stable energy output during the cutting process, and the tissue does not adhere or blacken, thereby achieving tissue vaporization, cutting, and hemostasis.

[0027] When hemostasis is needed, the push-pull switch 32 is pulled, so that the push-pull switch 32 drives the ball head 26 to retract the electrode holder 21 through the cutting electrode 25, and then the hemostasis pedal is stepped on, the hemostasis circuit is turned on, the hemostasis electrode end (electrode sheet 22) works, and the other ends have no output; When cutting is required, push the push-pull switch 32 so that the push-pull switch 32 drives the ball head 26 to extend out of the electrode holder 21 through the cutting electrode 25 and lock it. Then step on the cutting pedal, the cutting circuit is turned on, the cutting electrode end (cutting electrode 25) works, and the other ends have no output.

[0028] In the above scheme, by setting the electrode assembly 2, minimally invasive surgery can be achieved under endoscopic visualization through the endoscopic channel to vaporize, cut, ablate, shrink, and stop bleeding of diseased tissue parts such as the digestive tract and respiratory tract mucosa, polyps, etc., and by setting the electrode sheet 22, a bipolar circuit is formed between two adjacent electrode sheets 22. Compared with the prior art, the bipolar circuit in the embodiment of the present application has no negative plate connection and adopts a neutral connection to avoid the risk of poor contact and human burns, which is safer and more efficient. During clinical application, it can contact the lesion position at multiple angles to ensure effective contact with human tissue and achieve stable energy output. By setting the cutting electrode 25 and the four One of the poles of each electrode sheet 22 forms a loop, forming a three-pole circuit; by opening a plurality of water outlets 27 on the circumference of the electrode holder 21, and leaving a water outlet gap between the cutting electrode 25 and the electrode holder 21, the effect of synchronous water outlet during the operation can be achieved, solving the problems of dipping water before use and pulling out the dipping water during use, improving the operation efficiency, and ensuring the clinical effect; through the provided handle 3, outer insulating sheath 1, water inlet 24 and water outlet 27, a water injection channel is formed, which can achieve cooling for low-temperature surgery, ensure the moistening of the tissue surface, and stable energy output. At the same time, the wound surface can be flushed to ensure the cleaning of the surgical field, and more comprehensive exploration and treatment can be carried out.

[0029] In some possible implementations, see Figures 1 to 3 As shown, the cavity is connected to a sheath tube 7 near one end of the outer insulating sheath tube 1. The sheath tube 7 is partially sleeved on the end of the outer insulating sheath tube 1 away from the electrode seat 21. The sheath tube 7 adopts a PE heat shrink tube or a PTFE sheath to prevent the cutting electrode 25 from bending and deforming after extending out of the handle body 31, and plays a role of extending support and protection for the entire cutting electrode 25 near the end of the sheath tube 7.

[0030] In some possible implementation schemes, a fixed sleeve is fixed on the cutting electrode 25 in the cavity, the fixed sleeve passes through the lower end of the push-pull switch 32, and the outer peripheral wall of the fixed sleeve is fixedly connected to the push-pull switch 32 to prevent the cutting electrode 25 from being pulled off during the pushing and pulling process of the push-pull switch 32.

[0031] In some possible implementation schemes, a cutting electrode insulation tube is provided on the cutting electrode 25 , and the cutting electrode insulation tube is used to electrically insulate the cutting electrode 25 .

[0032] In some possible implementations, see Figure 2As shown, a three-way connector 33 is provided in the cavity, one end of the three-way connector 33 is connected to a water injection connector, the end of the water injection connector away from the three-way connector 33 extends into the sheath tube 7, and is connected to the end of the outer insulating sheath tube 1 away from the electrode seat 21, the other end of the three-way connector 33 is connected to a water injection hose 6, and a standard Luer lock connector is provided on the water injection hose 6, the standard Luer lock connector is connected to the infusion tube to transport the physiological saline medium, the end of the fixed sleeve away from the push-pull switch 32 is installed on the three-way connector 33 through a fixing nut, and the cutting electrode 25 passes through the three-way connector 33.

[0033] It should be noted that the push-pull switch 32 has an arc protrusion on the upper end, and the handle body 31 is provided with an arc concave surface that cooperates with the arc protrusion. The arc protrusion and the arc concave surface form a fixed position to prevent the cutting electrode 25 from moving back and forth during use.

[0034] In the above scheme, the water inlet 24 is set so that the physiological saline can pass through the three-way connector 33 and the outer insulating sheath 1 in sequence through the water injection hose 6, so that the physiological saline enters the electrode seat 21 through the water inlet 24 and is discharged through the water outlet 27. In the plasma mode of the plasma radiofrequency ablation surgical electrode head provided in the embodiment of the present application, plasma can be excited, and the excited plasma will quickly break the molecular bonds between tissues. The low-temperature "40-70°C" environment is safer to work in, with low surgical risks, good treatment effects, little impact on healthy tissues, and little thermal damage. Compared with traditional high-frequency endoscopic surgical electrodes, no negative plate is required, a loop is formed between the electrode heads, and the current does not flow through the human body, which can meet the needs of patients with pacemakers. The endoscopic plasma surgical electrode has stronger vaporization, cutting, and punching capabilities, and better hemostasis, ablation, and shrinkage effects.

[0035] During respiratory surgery: 1) In routine operation, the single flushing volume should be controlled at 20-50 mL, and the total volume should not exceed 200-300 mL (for adults).

[0036] 2) Pediatric patients: Adjust according to body weight (5-10mL / kg), the total amount is significantly lower than that of adults.

[0037] 3) Patients with cardiopulmonary insufficiency: The flow rate needs to be further reduced to avoid excessive volume load.

[0038] 4) Equipment limitations: Endoscope flushing systems are usually designed for a safe flow rate (50-100 mL / min).

[0039] The water flow rate can be controlled by a regulating valve in the infusion tube or a peristaltic pump in high-frequency surgical equipment, which can effectively avoid complications (such as pulmonary edema, infection or aspiration).

[0040] In some possible implementations, the electrode sheet 22 is made of stainless steel, and the electrode holder 21 is made of ceramic.

[0041] In some possible implementation schemes, the surface of the electrode sheet 22 is provided with an anti-adhesion coating to ensure a stable energy output process and prevent tissue accumulation and carbonization of eschar.

[0042] In some possible embodiments, the electrode assembly 2 is cylindrical and spherical, wherein the spherical shape is a conductive spherical shape and a non-conductive spherical shape, and different shapes can be used in different application scenarios.

[0043] Example 2 (Single Hemostasis Function) In some possible implementations, see Figure 7 As shown, another endoscopic soft plasma radiofrequency ablation surgical electrode blade provided by the embodiment of the present application also includes a plastic-coated spring tube 10, which is sleeved on the rear end of the electrode holder 21 (the plastic-coated spring tube 10 is used to replace the outer insulating sheath 1 in Example 1). At this time, the electrode blade can be cylindrical, conical and elliptical, and different shapes can adapt to different application scenarios. Four conductive wires 23 are located in the plastic-coated spring tube 10, and the end of the plastic-coated spring tube 10 away from the electrode holder 21 passes through the sheath tube 7 and is sealed by adhesive connection. It also includes a handheld part 9 (the handheld part 9 replaces the handle 3 in Example 1), and the sheath tube 7 is fixed to one end of the handheld part 9 by heat shrinkage, and the other end of the handheld part 9 is connected to the cable 4. The end of the cable 4 away from the handheld part 9 is connected to the connector 5, and the plastic-coated spring tube 10 passes through the sheath tube 7 and the handheld part 9 in sequence, so that the four conductive wires 23 in the plastic-coated spring tube 10 are connected to the cable 4. The plastic-coated spring tube 10 inside the handheld part 9 is also equipped with a rear end fixing block, which is fixed in the handheld part 9, so that the position of the plastic-coated spring tube 10 and the handheld part 9 is fixed, and a closed cavity is formed by adhesive bonding and potting. When hemostasis is needed, the hemostasis pedal is stepped on, the hemostasis circuit is turned on, the electrode sheet 22 works, and hemostasis is completed.

[0044] In some possible implementations, see Figure 7 As shown, the handheld part 9 is also provided with a water injection interface, and a standard Luer lock connector is provided on the water injection interface. The standard Luer lock connector is connected to the infusion tube. The water flow rate can be controlled by the infusion tube regulating valve or the peristaltic pump of the high-frequency surgical equipment to control the water flow rate.

[0045] This specific embodiment is merely an explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of protection of the invention, they are protected by patent law.

Claims

1. An endoscopic soft plasma radiofrequency ablation surgical electrode blade, characterized in that: include: An electrode assembly (2), the electrode assembly (2) comprising an electrode seat (21), the front end of the electrode seat (21) being provided with four mounting grooves along its circumferential direction, an electrode sheet (22) being fixedly mounted in each mounting groove so that two adjacent electrode sheets (22) are insulated, a conductive wire (23) being fixedly mounted at the bottom of each electrode sheet (22), a water outlet hole being provided through the center of the electrode seat (21) along its length direction, a slidable cutting electrode (25) being provided in the water outlet hole, and a water outlet gap being left between the cutting electrode (25) and the electrode seat (21), a ball head (26) being provided at the front end of the cutting electrode (25), the ball head (26) being used for lifting tissue during surgery, a plurality of water inlets (24) being provided at the rear end of the electrode seat (21) in the circumferential direction, the water inlets (24) extending to the front end of the electrode seat (21) and penetrating the side wall of the electrode seat (21) to form a water outlet (27); An outer insulating sheath (1), the outer insulating sheath (1) being sleeved on the plurality of conductive wires (23), and the rear end of the electrode seat (21) being arranged inside the outer insulating sheath (1); A handle (3), the handle (3) comprising a handle body (31), a movable push-pull switch (32) being provided on the handle body (31), a cavity being provided inside the handle (3), the cutting electrode (25) extending from one end of the electrode holder (21) into the cavity and passing through the lower end of the push-pull switch (32), a cable (4) being further provided on the handle body (31), the conductive wire (23) being electrically connected to the cable (4) at one end of the electrode sheet (22), the cable (4) being electrically connected to the cutting electrode (25), and an electrically connected connector (5) being provided at one end of the cable (4) being away from the handle body (31).

2. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The cavity is connected to a sheath tube (7) at one end close to the outer insulating sheath tube (1), and the sheath tube (7) is partially sleeved on the end of the outer insulating sheath tube (1) facing away from the electrode seat (21).

3. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 2, characterized in that: A fixed sleeve is provided on the cutting electrode (25) in the cavity. The fixed sleeve passes through the lower end of the push-pull switch (32), and the outer peripheral wall of the fixed sleeve is fixedly connected to the push-pull switch (32).

4. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 3, characterized in that: A cutting electrode insulating tube is sleeved on the cutting electrode (25), and the cutting electrode insulating tube is used to electrically insulate the cutting electrode (25).

5. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 4, characterized in that: A three-way connector (33) is provided in the cavity, one end of the three-way connector (33) is connected to a water injection connector, the end of the water injection connector facing away from the three-way connector (33) extends into the sheath tube (7) and is connected to the end of the outer insulating sheath tube (1) facing away from the electrode seat (21), and the other end of the three-way connector (33) is connected to a water injection hose (6), and the water injection hose (6) is used to transport a physiological saline medium; The end of the fixed sleeve facing away from the push-pull switch (32) is mounted on the three-way connector (33) via a fixing nut; The cutting electrode (25) passes through the three-way connector (33).

6. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 5, characterized in that: The electrode sheet (22) is made of stainless steel, and the electrode holder (1) is made of ceramic.

7. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to claim 6, characterized in that: An anti-adhesion coating is provided on the surface of the electrode sheet (22).

8. The endoscopic soft plasma radiofrequency ablation surgical electrode tip according to any one of claims 1 to 7, characterized in that: The electrode assembly (2) is cylindrical, conical, elliptical or spherical; The spheres are conductive and non-conductive.

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