Electrode cutter head for single-electrode plasma radiofrequency ablation operation under endoscope

Abstract

The invention discloses an endoscopic single-electrode plasma radiofrequency ablation operation electrode tool bit, and belongs to the field of digestive and respiratory departments. The electrode tool bit comprises a flexible part, an electrode tip and a handle, one end of the flexible part is connected with the electrode tip, and the other end of the flexible part penetrates through a protective sleeve to be connected with the handle; a water injection connector is arranged on the handle and connected with a water injection hose, and a protective sleeve is arranged at the front end of the handle. A plurality of water outlet holes are formed in the side face of the electrode tip, the flexible part comprises a plastic-coated multi-strand steel wire, a spring tube and an outer sheath tube, and one end of the inner side of the electrode tip extends into the flexible part and is connected with the plastic-coated multi-strand steel wire through a connecting tube; a through groove is formed in the connecting pipe, and cavities are formed between the plastic-coated multi-strand steel wires and the inner wall of the flexible part and between the outer wall of the connecting pipe and the inner wall of the flexible part. The flexible supporting design of the spring tube and the outer sheath tube is combined, the multi-angle steering requirement of an endoscope is met, the endoscope can go deep into a bent cavity or a complex anatomical site, and mechanical damage of rigid instruments to the cavity is avoided.

Description

Technical Field

[0001] The present invention relates to the field of digestion and respiratory departments, and more particularly to an electrode blade for endoscopic monopolar plasma radiofrequency ablation surgery. Background Art

[0002] In modern medicine, flexible endoscopic surgery, with its minimally invasive nature, has gained widespread application in the diagnosis and treatment of digestive and respiratory tract diseases. As a key instrument in flexible endoscopic surgery, the performance of surgical electrodes directly impacts the effectiveness and safety of the procedure. However, currently available flexible endoscopic surgical electrodes still have numerous deficiencies in practical application, making them difficult to meet the diverse needs of clinical treatment. Existing soft endoscopic surgical electrodes generally have a large outer diameter for insertion. This makes it difficult for them to pass through the narrower endoscope channel and cannot reach the narrower cavities or diseased areas in the human body such as the digestive tract and respiratory tract. Treatment operations such as vaporization, perforation, ablation and shrinkage of some mucosal and polyp pathological tissues, as well as hemostasis of bleeding points, bring great difficulties, affecting the minimally invasive nature of the surgery and the therapeutic effect. In terms of electrode tip performance, most existing electrode tips lack an anti-adhesion coating. During energy delivery, tissue accumulation and carbonization of eschars can easily occur, leading to unstable energy output and impacting the smooth progress of surgery and therapeutic effectiveness. Furthermore, existing electrode tips are relatively simple in shape and can often only meet the needs of a single surgical procedure. Some electrode tips offer poor hemostasis, while others lack cutting and vaporization perforation functions, making them inflexible during surgery based on actual conditions and limiting their applicability. In terms of surgical efficiency, existing electrodes need to be frequently removed and dipped in water before and during use. This operation not only prolongs the operation time and reduces surgical efficiency, but may also increase the patient's pain and surgical risks. Moreover, most existing electrodes do not have a water injection function and cannot achieve synchronous water discharge during surgery. This leads to excessively high temperatures during surgery, which easily causes eschar on the tissue surface, affecting the stability of energy output. At the same time, it is also impossible to flush the wound surface in time, making it difficult to ensure a clear surgical field of view, which may affect the doctor's comprehensive exploration and accurate treatment of the diseased tissue. Furthermore, conventional high-frequency endoscopic surgical monopolar devices generate high temperatures during operation, which can easily cause thermal damage to healthy tissue and increase surgical risks. Furthermore, due to the lack of water injection, plasma cannot be generated in the device's plasma mode, preventing the rapid breaking of molecular bonds in tissues for cryogenic surgery. This further impacts surgical safety and therapeutic effectiveness.

[0003] In view of this, we propose an endoscopic monopolar plasma radiofrequency ablation surgical electrode tip. Summary of the Invention

[0004] The purpose of the present invention is to provide an endoscopic monopolar plasma radiofrequency ablation surgical electrode tip to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An electrode blade for endoscopic monopolar plasma radiofrequency ablation surgery includes a flexible portion, an electrode head, and a handle. A protective sleeve is provided at the front end of the handle. One end of the flexible portion is connected to the electrode head, and the other end of the flexible portion passes through the protective sleeve and is connected to a connector inside the handle. The handle is provided with a water injection interface, which is used to connect to the water injection hose through a Luer lock connector; The electrode head is provided with multiple water outlet holes on its side. The number and pattern of the water outlet holes can be adjusted according to the diameter and thickness of the electrode head. The flexible part includes a plastic-coated multi-strand steel wire, a spring tube, and an outer sheath tube arranged in sequence from the inside to the outside. One end of the inner side of the electrode head extends into the interior of the spring tube and is connected to the plastic-coated multi-strand steel wire through a connecting tube. A through groove is provided on the connecting pipe, and a cavity is formed between the plastic-coated multiple-strand steel wire and the outer wall of the connecting pipe and the inner wall of the flexible part.

[0006] Preferably, a tail cap is provided at the end of the handle, and a connecting pin is provided on the tail cap. The connecting pin is connected to the plastic-coated multi-strand steel wire in the middle of the spring tube through a soft wire and a connecting sleeve. The inside of the tail cap pin and the connection between the soft wire and the plastic-coated multi-strand steel wire are both sealed and insulated by an insulating tube and epoxy glue.

[0007] Preferably, the surface of the electrode head is provided with an anti-stick coating, and the electrode head is cylindrical or conical; the cylindrical electrode head is used to contact the tissue surface to achieve fitting hemostasis; the conical electrode head is used for hemostasis, cutting and vaporization drilling, and can penetrate the tissue into the deep layer under the action of energy.

[0008] Preferably, a water outlet groove is further provided on the inner wall of the electrode head, and the water outlet groove is connected to the water outlet hole; A hemostatic electrode is provided at the end of the electrode head, a water outlet hole is provided on the surface of the hemostatic electrode, a cutting electrode is provided through the middle of the electrode head, a water outlet gap is reserved between the outer wall of the cutting electrode and the inner wall of the electrode head, and a cutting electrode convex head is provided at one end extending from the cutting electrode to the outside of the hemostatic electrode.

[0009] Preferably, a water flow guide groove is opened in the axial direction on the outer wall of the electrode head, the water flow guide groove is connected to the water outlet hole, the water outlet hole has a certain inclination angle, and a process hole and a positioning pin are provided on the electrode head, and the positioning pin passes through the process hole to connect and fix the electrode head to the spring tube; A suction hole is opened in the middle of the electrode head, and the suction hole is used to connect with the suction hose. A suction tube is set in the spring tube. The end of the suction tube close to the electrode head is connected to the end inside the suction hole, and the end of the suction tube close to the handle is connected to the suction hose. A plurality of electrode wires are provided at the end of the electrode head. A plurality of through holes are opened in the axial direction of the electrode head. A plurality of conductive wires with insulating layers are provided between the outer wall of the suction tube and the inner wall of the spring tube. The electrode wires pass through the through holes in sequence and are connected to the conductive wires with insulating layers. The electrode head is provided with a process hole and a positioning pin, and the positioning pin passes through the process hole to connect and fix the electrode head to the spring tube.

[0010] Preferably, the outer sheath tube is provided with a suction through hole along its axial middle portion, the suction through hole is connected to the suction hole of the electrode head, and the outer sheath tube is provided with a conductive wire hole and a water outlet cavity along the circumferential direction; The outer wall of the electrode head is provided with a water flow guide groove, and the water flow guide groove and the water outlet cavity at the end of the outer sheath tube form a water outlet hole.

[0011] Preferably, a cutting and crushing wire is provided in the suction hole at the end of the electrode head, the end of the electrode head is set to a plane, an auxiliary water outlet hole is opened on the plane, and a main water outlet hole is opened on the side of the electrode head.

[0012] Preferably, a connector and a connecting sleeve are provided in the handle, one end of the spring tube is fixed in the connector and one end of the conductive wire is fixed in the connecting sleeve.

[0013] Preferably, the handle surface is provided with an anti-slip texture.

[0014] Preferably, a dedicated host connection cable is used for the above-mentioned endoscopic monopolar plasma radiofrequency ablation surgical electrode head. The dedicated host connection cable is a double-strand cable, one end of which is provided with a dedicated host sub-interface. One strand of the double-strand cable is connected to an electrode socket, and the other strand of the double-strand cable is connected to a neutral plate clamp.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The flexible portion of the present invention adopts a small insertion outer diameter of 1.0 to 2.8 mm, which can pass through a thinner endoscope channel, breaking through the accessibility limitations of traditional instruments in narrow cavities (such as the digestive tract and deep respiratory tract), achieving precise intervention on subtle lesions such as mucosa and polyps, and reducing trauma to normal tissues. Combined with the flexible support design of the spring tube and outer sheath, it adapts to the multi-angle steering requirements of the endoscope and can penetrate into curved cavities or complex anatomical parts, avoiding mechanical damage to the cavity caused by rigid instruments.

[0016] (2) The present invention relies on a dedicated host connection line, which is provided with an outward-protruding interface structure and an electrode identification function to prevent unexpected application. The plasma effect conversion of the monopolar instrument is achieved through a monopolar interface or a bipolar interface structure. The saline medium excites a low-temperature plasma of 40-70°C. Compared with traditional high-frequency electric knives, the true excitation plasma effect can more efficiently break the molecular bonds of tissues, achieve sharp cutting, thorough vaporization, and precise perforation. At the same time, it achieves low temperature, better cutting and hemostasis effects, significantly reduces thermal damage, and reduces the risk of burns to surrounding healthy tissues. It is particularly suitable for surgery in mucosa and nerve-dense areas. The cylindrical electrode head achieves efficient hemostasis through large-area bonding; the conical electrode head takes into account hemostasis, cutting and deep tissue penetration; the anti-adhesion coating avoids the accumulation of carbonized eschar in tissues, ensures the stability of energy output, and reduces the interruption of eschar removal during surgery.

[0017] (3) The water outlet holes and water flow guide grooves distributed on the side and surface of the electrode head of the present invention cooperate with the water outlet cavity of the outer sheath to achieve "real-time water injection → directional flushing → precise cooling" throughout the operation. There is no need to dip the electrode head in water before the operation or to pull it out and dip it in water during the operation, which improves the efficiency of the operation. The auxiliary water outlet holes specifically flush the end of the electrode head, and cooperate with the axial diffusion of the water flow guide groove to form a three-dimensional flushing network, which thoroughly removes debris and blood stains and maintains a clear surgical field. The suction hole + suction through hole constructs a high-flow suction channel, and cooperates with the cutting and crushing wire built into the suction hole to crush larger particle tissues through plasma vaporization, solving the problem of easy clogging of traditional suction tubes and improving the suction patency rate. The spatial layout of pre-flushing and mid-suction strengthens liquid circulation, avoids fluid accumulation in the surgical area, and reduces repeated operations caused by obstruction of the visual field.

[0018] (4) The outer sheath of the present invention integrates a suction through-hole + a conductive wire hole + a water outlet cavity, and a single channel realizes the triple functions of suction, conduction, and flushing, reducing the number of puncture channels and conforming to the concept of minimally invasive surgery; the connecting tube simultaneously assumes the functions of "conductivity + water outlet + mechanical connection", optimizes the internal space utilization rate, and avoids interference from multiple pipelines. The water injection flow is precisely controlled by a regulating valve, and the low-flow mode is used for patients with cardiopulmonary insufficiency to prevent complications such as pulmonary edema and aspiration; the conductive wire is arranged in an independent chamber + the epoxy glue sealing layer ensures electrical insulation and avoids the risk of short circuit; the spring tube flexibly supports the suction tube to prevent bending and clogging, ensuring stable negative pressure.

[0019] (5) The anti-slip texture of the handle of the present invention improves the grip stability, and the tail cap and the connecting pin realize the rapid docking of the device, reducing the time spent on assembly during surgery; the telescopic design of the cutting electrode supports the precise operation of "shallow fine-tuning → deep strengthening" and adapts to the requirements of different tissue thicknesses. Through the functional combination of "vaporization / perforation (conical head), fitting hemostasis (cylindrical head), water outlet suction circulation (multi-electrode wire, flat surface)", it covers multiple scenarios such as gastrointestinal polypectomy, respiratory mucosal trimming, and ablation. Compared with traditional high-frequency electrodes, the cutting and hemostasis efficiency are improved, and the tissue shrinkage / ablation effect is more uniform. In summary, the blade head achieves the clinical value of safer precise operation, clearer and more efficient surgical field, less damage and faster recovery through the collaborative design of minimally invasive accessibility, low-temperature plasma, water circulation-suction closed loop, and multi-functional integration. It is significantly superior to traditional endoscopic surgical electrodes and provides more reliable technical support for minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of Example 1 of the present invention; Figure 3 It is a cross-sectional schematic diagram of the electrode head, spring tube and outer sheath tube of the present invention; Figure 4 Schematic diagram of the electrode head of the present invention; Figure 5 This is a perspective diagram of the interior of the handle of Example 3-4 of the present invention; Figure 6 This is a schematic diagram of the internal structure of the handle of Example 3-4 of the present invention; Figure 7 This is a schematic diagram of the electrode head of Example 2 of the present invention; Figure 8 This is a partial schematic diagram of the electrode head of Example 2 of the present invention; Figure 9 This is a schematic diagram of the handle of Example 2 of the present invention; Figure 10 This is a schematic diagram of the electrode head of Example 3 of the present invention; Figure 11 This is a schematic diagram of the installation of the connector, conductive wire, and suction tube of the present invention; Figure 12 This is a schematic diagram of the electrode head of Example 4 of the present invention; Figure 13 Schematic diagram of the outer sheath tube of the present invention; Figure 14 This is a schematic diagram of a flat electrode head according to Example 5 of the present invention; Figure 15 Schematic diagram of the dedicated host connection line of the present invention.

[0021] Explanation of the numbers in the figure: 1. Flexible part; 2. Electrode head; 201. Water outlet; 202. Water outlet groove; 203. Water flow guide groove; 204. Suction hole; 205. Insulating porcelain head; 206. Cutting and crushing wire; 207. Auxiliary water outlet; 208. Hemostatic surface; 209. Main water outlet; 3. Handle; 301. Water injection interface; 302. Tail cap; 4. Suction hose; 5. Spring tube; 6. Outer sheath; 601. Conductive wire hole; 602. Water outlet cavity; 603. Suction through hole; 7. Package Plastic multi-strand steel wire; 8. Connecting tube; 9. Connecting pin; 10. Flexible wire; 11. Cutting electrode; 1101. Cutting electrode boss; 12. Electrode wire; 13. Conductive wire; 14. Electrode socket; 15. Connector; 16. Hemostatic electrode; 17. Suction tube; 18. Cable; 19. Protective sleeve; 21. Connecting sleeve; 22. Process hole and process pin; 23. Connecting plug; 24. Slider; 25. Dedicated host interface; 2501. Electrode identification module; 26. Neutral plate clamp. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1: See also Figure 1-4 15. An endoscopic monopolar plasma radiofrequency ablation surgical electrode blade comprises a flexible portion 1, an electrode head 2 and a handle 3. The handle 3 has a non-slip texture on its surface. One end of the flexible portion 1 is connected to the electrode head 2. A protective sleeve 19 is provided at the front end of the handle 3. The other end of the flexible portion 1 passes through the protective sleeve 19 and is connected to the connector 15 inside the handle 3. The protective sleeve 19 is used to prevent the flexible portion 1 from bending. The connection between the front end hole of the handle 3 and the flexible portion 1 is sealed with glue. Flexible portion 1 has a smaller insertion outer diameter (1.0-2.4 mm), which can pass through a thinner mirror channel and achieve minimally invasive surgery under the visualization of the soft mirror, and can reach narrower human cavities or diseased areas. The surface of the electrode head 2 has an anti-adhesion coating to ensure the stability of the energy output process and prevent tissue aggregation and carbonization of eschar.

[0024] In this application, the electrode head 2 is provided with an anti-stick coating on its surface and is cylindrical or conical in shape. The cylindrical electrode head is used to contact the tissue surface to achieve adhesion, while the conical electrode head can penetrate the tissue into the deep layer. The cylindrical electrode head can better contact the tissue surface and achieve better adhesion. The conical electrode head can stop bleeding while also having the functions of cutting and vaporizing and perforating. The conical head is better able to penetrate the tissue into the deep layer under the action of energy.

[0025] Handle 3 is equipped with a water injection port 301, which is used to connect to a water injection hose via a Luer lock connector. The water injection function can achieve cooling to achieve cryogenic surgery, ensuring moist tissue surface and stable energy output. It can also irrigate the wound surface to ensure a clear surgical field of view and enable more comprehensive exploration and treatment. With the water injection function, under the action of saline, the device can stimulate plasma in plasma mode. The stimulated plasma will quickly break the molecular bonds between tissues. The low temperature of "40-70°C" makes working in a low-temperature environment safer, reduces surgical risks, improves treatment effectiveness, minimizes impact on healthy tissue, and reduces thermal damage. Compared with traditional high-frequency endoscopic surgical monopolar electrodes, monopolar endoscopic plasma surgery electrodes have stronger cutting, vaporization, and perforation capabilities, and better hemostasis, ablation, and shrinkage effects.

[0026] A plurality of water outlet holes 201 are provided on the side of the electrode head 2, and different numbers of water outlet holes 201 are distributed on the front and back of the surface of the electrode head 2, which can achieve a synchronous water outlet effect during the surgical process, solve the problem of dipping in water before use and dipping in water during use, improve surgical efficiency, and ensure clinical results. The flexible part 1 includes a plastic-coated multi-strand steel wire 7, a spring tube 5, and an outer sheath 6 arranged in sequence from the inside to the outside. The plastic-coated multi-strand steel wire 7 is used to reduce resistance and conduct electricity to the electrode. One end of the inner side of the electrode head 2 extends to the inside of the spring tube 5 and is connected to the plastic-coated multi-strand steel wire 7 through a connecting tube 8. The connecting tube 8 is used to connect the electrode head 2 and the conductive plastic-coated multi-strand steel wire rope 7, and has the functions of connection, conduction, and water outlet.

[0027] The rear end surface of the electrode head 2 is coated with glue to form a seal with the inner cavity of the spring tube 5, and the external connection is laser welded to ensure the connection is firm.

[0028] A through groove is provided on the connecting tube 8, and a cavity is formed between the outer wall of the plastic-coated multi-strand steel wire 7 and the connecting tube 8 and the inner wall of the spring tube 5 for water to pass through. The water flows through the cavity from the through groove on the connecting tube 8 into the connecting tube 8, and then enters the electrode head 2 and the water outlet 201.

[0029] In this application, the end of the handle 3 is provided with a tail cap 302, which is equipped with a connecting pin 9. This connecting pin 9 is connected to the plastic-coated multi-stranded steel wire 7 via a flexible conductor 10 and a connecting sleeve 21. The connecting pin 9 is used to connect to the instrument interface electrode socket 14. The end of the handle 3 is sealed and insulated at the connection point between the connecting pin 9, the flexible conductor 10, and the connecting sleeve 21 and the plastic-coated multi-stranded steel wire 7 using glue. The interior of the tail cap pin and the connection between the flexible conductor and the plastic-coated multi-stranded steel wire are sealed and insulated using insulating tubing and epoxy adhesive.

[0030] With water injection function, 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).

[0031] 2) Pediatric patients: adjust according to body weight (e.g. 5-10 mL / kg), the total amount is significantly lower than that of adults.

[0032] 3) Patients with cardiopulmonary insufficiency: The flow rate needs to be further reduced to avoid excessive volume load.

[0033] 4) Equipment limitations: Endoscope flushing systems are usually designed for a safe flow rate (e.g., 50-100 mL / min).

[0034] The water flow rate can be controlled by a regulating valve on the water injection hose 4, which can effectively avoid complications (such as pulmonary edema, infection or aspiration).

[0035] Example 2: See also Figure 7-9 The difference between this embodiment and Example 1 is that a water outlet slit is defined in the center of electrode head 2, and a water outlet groove 202 is defined on the inner wall of electrode head 2. Water outlet groove 202 is connected to water outlet hole 201. Water flows through water outlet hole 201 into water outlet groove 202 and diffuses along the outer wall and center of electrode head 2, flushing away blood stains and debris, and exposing the surgical interface. Continuous water flow dissipates heat from the electrode during operation, preventing local tissue carbonization or burns caused by high temperature.

[0036] The end of the electrode head 2 is provided with a hemostatic electrode 16, which uses high-frequency current or plasma effect to thermally coagulate and seal small blood vessels and bleeding points. Because it is located at the end of the electrode head, it can quickly deal with bleeding at the edge of the cutting surface, cooperate with the cutting operation to stop bleeding synchronously, and improve efficiency. The middle part of the electrode head 2 is provided with a cutting electrode 11. The cutting electrode 11 is located at the end of the electrode head 2. Figure 9 The slider 24 shown can be extended and retracted forward and backward. This retractable function allows the exposed length of the cutting electrode protrusion to be controlled: when cutting shallow tissue, the exposed protrusion is shortened to avoid excessive damage; when cutting deep tissue, the protrusion is extended to enhance the cutting force. A water outlet gap is reserved between the outer wall of the cutting electrode 11 and the inner wall of the electrode head 2. The cutting electrode 11 extends to the outer end of the hemostatic electrode 16 and is provided with a cutting electrode protrusion 1101. The cutting electrode protrusion 1101 is used for surgical tissue lifting. Water flows through the gap, continuously cooling the cutting electrode 11, preventing the electrode from overheating, deforming, or adhering to the tissue. The cutting electrode protrusion 1101 can be made of conductive material as the energy release end of the cutting electrode. When powered on, it can output high-frequency electricity or plasma energy in a concentrated manner to achieve targeted cutting of the lifted tissue and improve cutting accuracy. Non-conductive material can also be used as the electrode hook to achieve tissue lifting, adjustment, and inspection of the lesion site. This embodiment achieves the surgical effect of "precise cutting + minimally invasive hemostasis + clear surgical field" through the coordinated operation of "flushing → lifting → cutting → hemostasis" and combines the low-temperature advantage of plasma technology, which is particularly suitable for delicate operations under endoscopy.

[0037] like Figure 9As shown in this embodiment, the handle 3 is provided with a water inlet 301, a connecting plug 23, and a slider 24. The connecting plug 23 is used to connect to the electrode socket 14. A silicone pad is provided in the connecting plug 23 for sealing and preventing water leakage, and a reed is provided for conduction.

[0038] Example 3: See also Figure 5-6 , 10-11, the outer wall of the electrode head 2 is provided with a water flow guide groove 203 along the axial direction, the water flow guide groove 203 is connected with the water outlet 201, the water outlet 201 is provided with a certain inclination angle, the water flow guide groove 203 guides the water flow of the water outlet 201 to extend along the axial direction of the electrode head, rather than local spraying, to ensure all-round flushing of the surgical area, a suction hole 204 is provided in the middle of the electrode head 2, the suction hole 204 is used to connect with the suction hose 4, the suction tube 17 is connected to the inner end of the suction hole 204 at one end close to the electrode head 2, and the suction tube 17 is connected to the suction hose 4 at one end close to the handle 3; a suction tube 17 is provided in the spring tube 5, and the inner end of the suction hole 204 is connected to the suction tube 17; the flushing fluid, blood seepage and debris in the surgical area are sucked in through the suction hole 204 and discharged from the body through the suction tube 17, Clear the field of view in real time to ensure the precision of surgical operations; the suction tube is built into the spring tube, utilizing the flexible support characteristics of the spring tube to prevent the suction tube from folding due to handle bending (ensuring unobstructed suction) and adapt to the multi-angle operation of the handle during endoscopic surgery. The suction hole 204 is located in the middle of the electrode head. The electrode wire 12 is distributed at the center of the end of the electrode head 2, which can pulverize large particles of soft tissue through plasma vaporization. Together with the electrode wire 12 at the end, it forms a spatial layout of "flushing, suction, and pulverization", enhancing the efficiency of fluid circulation in the surgical area, ensuring continuous and unobstructed suction, and avoiding interruptions to the operation due to blockage. The electrode head 2 is provided with a process hole and a positioning pin 22. The positioning pin passes through the process hole to connect the electrode head 2 to the spring tube 5.

[0039] The end of the electrode head 2 is equipped with multiple electrode wires 12. Multiple through-holes are formed along the axial direction of the electrode head 2. These through-holes provide axial passageways for the electrode wires, fixing their extension length and angle, preventing wire displacement during surgery and ensuring spatial precision of energy application. Multiple conductive wires 13 are positioned between the outer wall of the suction tube 17 and the inner wall of the spring tube 5. The electrode wires 12 are sequentially connected through the through-holes. The electrode wires 12 utilize high-frequency electricity or plasma energy to achieve multi-point / surface tissue effects (such as large-area hemostasis and cutting). Compared to traditional single electrodes, this method is more efficient and provides more uniform energy distribution and action. The multiple electrode wires 12 arranged at the end can adapt to the contours of complex surgical areas and conform to curved tissue surfaces. The conductive wires 13 transmit electrical energy / control signals from the handle connector to the electrode wires, achieving energy output. The gap between the outer wall of the suction tube and the inner wall of the spring tube prevents interference between the conductive wires 13 and the fluid channel (suction tube and spring tube), while ensuring electrical insulation (preventing short circuits) and mechanical stability (preventing entanglement).

[0040] A connector 15 is provided within the handle 3, to which the spring tube 5 is fixedly connected. The conductive wire 13 passes through the connector 15 and is fixed at one end within the connecting sleeve 21. The connecting sleeve 21 is electrically connected to the connecting pin 9 via the flexible wire 10, distributing the host's high-frequency electrical / plasma signal to multiple conductive wires 13. This supports synchronous operation of multiple electrode wires (e.g., partial electrode cutting, partial coagulation) or time-sharing triggering (optimizing energy output timing). The connecting sleeve 21 anchors the ends of the conductive wires 13 and is sealed with glue to prevent loosening or displacement during surgical operation, ensuring a reliable electrical connection.

[0041] In this embodiment, the water flow guide groove 203 + the water outlet hole 201 constructs a flushing environment to remove interference and cool the electrode; the suction hole 204 + the suction tube 17 constructs a suction channel to maintain a clear surgical field; the electrode wire 12 + the conductive wire 13 + the connecting sleeve 21 + the soft wire 10 + the connecting pin 9 construct an energy chain to achieve cutting / hemostasis; the three work together to allow the electrode wire 12 to efficiently output energy in a moist, clear and stable surgical area, supporting the minimally invasive, precise and low-damage requirements of endoscopic surgery (such as gastroenteroscopy, bronchoscope, etc.). Figure 5-6 The electrode socket 14 in the handle 3 is connected to the connecting pin 9.

[0042] Example 4: See also Figure 5-6 , 12-13, a suction hole 204 is provided in the middle of the electrode head 2, and a plurality of water flow guide grooves 203 are provided on the outer wall of the electrode head 2 along its axial direction. The outer sheath 6 has a suction through-hole 603 along its axial middle, which is connected to the suction hole 204. The outer sheath 6 has a conductive wire hole 601 and a water outlet cavity 602 provided along the circumferential direction. The conductive wire hole 601 accommodates the conductive wire 13, providing a stable electrical signal transmission channel for the electrode wire 12. The water outlet cavity 602 transports the flushing liquid to the water flow guide groove 203 of the electrode head 2. The independent chamber ensures stable water pressure (to prevent the negative pressure of suction from interfering with the flushing flow). The circumferential distribution cooperates with the guide groove to achieve uniform water discharge in all directions. A single outer sheath integrates the three functions of suction, conduction, and flushing, reducing the number of puncture channels during surgery. The suction through-hole 603 performs the main suction function, and its large diameter ensures suction efficiency. It also serves as the mechanical support core of the outer sheath.

[0043] The water flow guide groove 203 on the outer wall of the electrode head 2 forms the water outlet hole 201 with the water outlet cavity 602 at the end of the outer sheath 6. This serves as a transitional interface from the water outlet cavity of the water outlet hole 201 to the water flow guide groove 203. This transforms the cavity-like water flow from the water outlet cavity of the outer sheath 6 into the trough-like water flow of the guide groove, achieving an orderly transformation of the water flow pattern. In this embodiment, the location of the water outlet hole 201 (on the outer wall of the electrode head) determines the direction in which the irrigation fluid is sprayed radially outward from the electrode head, directly impacting the surface of the surgical tissue, enhancing irrigation and cooling.

[0044] Example 5: See also Figure 5-6 14. A cutting and pulverizing wire 206 is disposed in the suction hole 204 at the end of the electrode head 2. The end of the electrode head 2 is configured as a flat surface with an auxiliary water outlet 207 provided therein. A main water outlet 209 is provided on the side of the electrode head 2. The cutting and pulverizing wire 206 pulverizes large particles of soft tissue through plasma vaporization, ensuring continuous and unobstructed suction and preventing surgical interruptions due to blockage. The pulverized fine particles are more easily drawn away by negative pressure, reducing the wasteful operation of repeatedly adjusting the suction position after suction without moving, thereby accelerating the purification of the surgical area. The auxiliary water outlet 207 directly sprays water toward the end for targeted flushing. The main water outlet 201 ensures sufficient water flow for hemostasis and cutting processes, preventing a reduction in water flow during tissue bonding.

[0045] A dedicated host connection cable is used for the endoscopic monopolar plasma radiofrequency ablation surgical electrode blade described in Examples 1-5. The dedicated host connection cable is a double-strand cable, one end of which is provided with a dedicated host sub-interface 25. One strand 18 of the double-strand cable is connected to the electrode socket 14, and the other strand 18 of the double-strand cable is connected to the neutral electrode clamp 26.

[0046] like Figure 15 The figure shows the structure diagram of the dedicated host sub-interface 25, which is provided with an outward-protruding interface structure for preventing mis-insertion. The dedicated host sub-interface 25 is connected to the electrode socket 14 and the neutral plate clip 26. The neutral plate clip 26 is used to connect with the neutral plate and stick it to the human body. The host end has an online detection function to detect the bonding and conductivity effect between the neutral plate and the human body to prevent electric burns. The dedicated host sub-interface 25 has a bipolar interface, and the plasma effect conversion of the monopolar instrument is realized through the bipolar interface structure. Different from the high-frequency electric heating effect of the traditional high-frequency electric knife, it truly excites the plasma effect to achieve low temperature and better cutting and hemostasis effects.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An endoscopic monopolar plasma radiofrequency ablation surgical electrode tip, characterized in that: It comprises a flexible portion (1), an electrode head (2) and a handle (3), wherein a plurality of water outlet holes (201) are provided on the side of the electrode head (2), a protective sleeve (19) is provided at the front end of the handle (3), one end of the flexible portion (1) is connected to the electrode head (2), and the other end of the flexible portion (1) passes through the protective sleeve (19) and is connected to the handle (3); The handle (3) is provided with a water injection interface (301), and the water injection interface (301) is used to connect to a water injection hose; The flexible portion (1) comprises a plastic-coated multi-strand steel wire (7), a spring tube (5), and an outer sheath tube (6) arranged in sequence from the inside to the outside, and one inner end of the electrode head (2) extends into the interior of the spring tube (5) and is connected to the plastic-coated multi-strand steel wire (7) via a connecting tube (8); A through groove is provided on the connecting tube (8), and a cavity is formed between the outer wall of the plastic-coated multi-strand steel wire (7) and the connecting tube (8) and the inner wall of the spring tube (5).

2. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The handle (3) is provided with an anti-slip texture on its surface, and a tail cap (302) is provided at the end of the handle (3). A connecting pin (9) is provided on the tail cap (302), and the connecting pin (9) is connected to the plastic-coated multi-strand steel wire (7) through a soft wire (10) and a connecting sleeve (21).

3. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The surface of the electrode head (2) is provided with an anti-stick coating, and the electrode head (2) is cylindrical or conical; the cylindrical electrode head is used for contacting the tissue surface to achieve adhered hemostasis; the conical electrode head is used for hemostasis, cutting and vaporization perforation, and can penetrate the tissue into the deep layer under the action of energy.

4. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: A water outlet groove (202) is also provided on the inner wall of the electrode head (2), and the water outlet groove (202) is connected to the water outlet hole (201); A hemostatic electrode (16) is provided at the end of the electrode head (2), a cutting electrode (11) is provided through the middle of the electrode head (2), a water outlet gap is reserved between the outer wall of the cutting electrode (11) and the inner wall of the electrode head (2), and a cutting electrode protrusion (1101) is provided at one end of the cutting electrode (11) extending to the outside of the hemostatic electrode (16).

5. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: A suction hole (204) is provided in the middle of the electrode head (2), and the suction hole (204) is used to be connected to a suction hose (4).

6. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 5, characterized in that: A water flow guide groove (203) is provided on the outer wall of the electrode head (2) along the axial direction, and the water flow guide groove (203) is connected to the water outlet hole (201); A suction tube (17) is provided in the spring tube (5), and the end of the suction tube (17) close to the electrode head (2) is connected to the inner end of the suction hole (204), and the end of the suction tube (17) close to the handle (3) is connected to the suction hose (4); A plurality of electrode wires (12) are provided at the end of the electrode head (2), a plurality of through holes are opened in the axial direction of the electrode head (2), a plurality of conductive wires (13) are provided between the outer wall of the suction tube (17) and the inner wall of the spring tube (5), and the electrode wires (12) pass through the through holes in sequence and are connected to the conductive wires (13); The electrode head (2) is provided with a process hole and a positioning pin (22), and the positioning pin passes through the process hole to connect and fix the electrode head (2) to the spring tube (5).

7. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 5, characterized in that: The outer sheath tube (6) is provided with a suction through hole (603) along its axial middle portion, the suction through hole (603) is communicated with the suction hole (204), and the outer sheath tube (6) is provided with a conductive wire hole (601) and a water outlet cavity (602) along the circumferential direction; The outer wall of the electrode head (2) is provided with a water flow guide groove (203) which, together with the water outlet cavity (602) at the end of the outer sheath tube (6), forms a water outlet hole (201).

8. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 5, characterized in that: A cutting and crushing wire (206) is provided in the suction hole (204) at the end of the electrode head (2); the end of the electrode head (2) is arranged as a plane, an auxiliary water outlet hole (207) is provided on the plane, and a main water outlet hole (209) is provided on the side of the electrode head (2).

9. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 5, characterized in that: A connecting piece (15) and a connecting sleeve (21) are provided in the handle (3); one end of the conductive wire (13) is fixed in the connecting sleeve (21); and one end of the spring tube (5) is fixed in the connecting piece (15).

10. A dedicated host connection cable, used for the endoscopic monopolar plasma radiofrequency ablation surgical electrode blade according to any one of claims 1 to 9, characterized in that: The dedicated host connection line is a double-strand cable, one end of which is provided with a dedicated host sub-interface (25), one strand (18) of the double-strand cable is connected to an electrode socket (14), and the other strand (18) of the double-strand cable is connected to a neutral plate clamp (26).

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