An endoscopic monopolar plasma radiofrequency ablation surgical electrode knife head

Abstract

The application discloses an endoscopic monopole plasma radio frequency ablation operation electrode knife head and belongs to the field of digestive and respiratory departments. The electrode knife head comprises a flexible part, an electrode head and a handle, one end of the flexible part is connected with the electrode head, the other end of the flexible part is connected with the handle through a protection sleeve, a water injection interface is arranged on the handle, the water injection interface is connected with a water injection hose, the front end of the handle is provided with the protection sleeve, a plurality of water outlet holes are arranged on the side surface of the electrode head, the flexible part comprises a plastic-coated multi-strand steel wire, a spring tube and an outer sheath tube, one end of the inner side of the electrode head extends to the inside of the flexible part and is connected with the plastic-coated multi-strand steel wire through a connecting pipe, a through groove is arranged on the connecting pipe, and cavities are formed between the outer walls of the plastic-coated multi-strand steel wire and the connecting pipe and the inner wall of the flexible part. The flexible support design of the spring tube and the outer sheath tube is combined, the endoscopic multi-angle steering requirement is adapted, the electrode knife head can be deeply inserted into a curved cavity or a complex anatomical site, and mechanical damage of a rigid instrument to the cavity can be avoided.

Description

Technical Field

[0001] This invention relates to the fields of gastroenterology and respiratory medicine, and more specifically, to an endoscopic monopolar plasma radiofrequency ablation surgical electrode tip. Background Technology

[0002] In modern medicine, flexible endoscopic surgery, with its minimally invasive advantages, has been widely used in the diagnosis and treatment of diseases of the digestive and respiratory tracts. Surgical electrodes, as key instruments in flexible endoscopic surgery, directly affect the surgical outcome and safety. However, currently available flexible endoscopic surgical electrodes still have many shortcomings in practical applications, making it difficult to meet the diverse needs of clinical treatment.

[0003] Current flexible endoscopic electrodes generally suffer from a large insertion outer diameter. This makes it difficult for them to pass through narrow endoscopic channels, preventing them from reaching narrower cavities or diseased areas in the human body, such as the digestive and respiratory tracts.

[0004] The treatment of some lesions such as mucosa and polyps, including vaporization, perforation, ablation and shrinkage, and hemostasis of bleeding points, has brought great difficulties, affecting the minimally invasive nature of the surgery and the treatment effect.

[0005] Regarding electrode tip performance, most existing electrode tips lack an anti-adhesion coating. During energy output, tissue aggregation and charring eschar are prone to occur, leading to unstable energy output and affecting the smooth progress of surgery and treatment outcomes. Furthermore, existing electrode tips have relatively simple shapes, often only meeting a single surgical requirement. Some electrode tips have poor hemostasis, while others lack cutting and vaporization / perforation functions, making it impossible to flexibly switch between them according to the actual situation during surgery, thus limiting the applicability of the procedure.

[0006] Regarding surgical efficiency, existing electrodes require frequent removal and water application before and during use. This not only prolongs surgical time and reduces efficiency but may also increase patient discomfort and surgical risks. Furthermore, most existing electrodes lack a water injection function, making simultaneous water output during surgery impossible. This leads to excessively high temperatures during surgery, causing eschar formation on the tissue surface, affecting the stability of energy output, and hindering timely wound irrigation. It also makes it difficult to ensure a clear surgical field, potentially affecting the surgeon's comprehensive exploration and accurate treatment of diseased tissue.

[0007] Furthermore, the high temperatures generated during operation of traditional high-frequency endoscopic monopolar devices can easily cause thermal damage to healthy tissue, increasing the risks of the surgery. Simultaneously, the lack of a water injection function prevents the generation of plasma in the device's plasma mode, hindering the use of plasma's ability to rapidly break tissue molecular bonds for cryogenic surgery, further impacting surgical safety and treatment outcomes.

[0008] In view of this, we propose an endoscopic monopolar plasma radiofrequency ablation surgical electrode tip. Summary of the Invention

[0009] The purpose of this invention is to provide an endoscopic monopolar plasma radiofrequency ablation surgical electrode tip to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] An endoscopic monopolar plasma radiofrequency ablation surgical electrode tip includes a flexible part, an electrode head, and a handle. A protective sleeve is provided at the front end of the handle. One end of the flexible part is connected to the electrode head, and the other end of the flexible part passes through the protective sleeve and is connected to a connector inside the handle.

[0012] The handle is equipped with a water inlet, which is used to connect to the water inlet hose via a Luer locking connector;

[0013] Multiple water outlet holes are provided on the side of the electrode head. The style and number of water outlet holes can be adjusted according to the diameter of the electrode head. The flexible part includes a plastic-coated multi-strand steel wire, a spring tube, and an outer sheath tube arranged sequentially from the inside to the outside. One end of the inner side of the electrode head extends into the spring tube and is connected to the plastic-coated multi-strand steel wire through a connecting tube.

[0014] The connecting pipe has a through groove, and the plastic-coated multi-strand steel wire and the outer wall of the connecting pipe form a cavity with the inner wall of the flexible part.

[0015] Preferably, the handle end is provided with a tail cap, and the tail cap is provided with a connecting pin. The connecting pin is connected to the plastic-coated multi-strand steel wire in the middle of the spring tube through a flexible wire and a connecting sleeve. The inside of the tail cap pin and the connection between the flexible wire and the plastic-coated multi-strand steel wire are sealed and insulated by an insulating tube and epoxy resin.

[0016] Preferably, the electrode head surface is provided with an anti-adhesion coating, and the electrode head is cylindrical or conical; the cylindrical electrode head is used to contact the tissue surface to achieve hemostasis; the conical electrode head is used for hemostasis, cutting and vaporization drilling, and can penetrate the tissue to enter the deep layer under the action of energy.

[0017] Preferably, a water outlet groove is also provided on the inner wall of the electrode head, and the water outlet groove is connected to the water outlet hole;

[0018] A hemostatic electrode is provided at the end of the electrode head, and 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, and a water outlet gap is reserved between the outer wall of the cutting electrode and the inner wall of the electrode head. A cutting electrode protrusion is provided at one end of the cutting electrode extending to the outer side of the hemostatic electrode.

[0019] Preferably, the outer wall of the electrode head is provided with a water flow guide groove along the axial direction, the water flow guide groove is connected to the water outlet hole, the water outlet hole is provided with a certain inclination angle, 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.

[0020] A suction hole is provided in the middle of the electrode head. The suction hole is used to connect with the suction hose. A suction tube is provided inside the spring tube. The end of the suction tube near the electrode head is connected to the inner side of the suction hole. The end of the suction tube near the handle is connected to the suction hose.

[0021] Multiple electrode wires are provided at the end of the electrode head, and multiple through holes are opened along the axial direction of the electrode head. Multiple 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.

[0022] The electrode head is provided with a process hole and a positioning pin. The positioning pin passes through the process hole to connect and fix the electrode head to the spring tube.

[0023] Preferably, the outer sheath has an attraction through hole along its axial center, which is connected to the attraction hole of the electrode head, and the outer sheath has a conductive wire hole and a water outlet cavity along its circumference.

[0024] The outer wall of the electrode head is provided with a water flow guide groove, which forms a water outlet hole with the water outlet cavity at the end of the outer sheath tube.

[0025] Preferably, the electrode head end has a cutting and crushing wire in the suction hole, the electrode head end is flat, an auxiliary water outlet is provided on the flat surface, and a main water outlet is provided on the side of the electrode head.

[0026] Preferably, the handle is provided with a connector and a connecting sleeve, with one end of the spring tube fixed inside the connector and the other end of the conductive wire fixed inside the connecting sleeve.

[0027] Preferably, the handle surface is provided with an anti-slip texture.

[0028] Preferably, a dedicated host connection cable is used for the above-mentioned endoscopic monopolar plasma radiofrequency ablation surgical electrode tip. The dedicated host connection cable is a two-strand cable, with a dedicated host sub-interface at one end of the two-strand cable. One strand of the two-strand cable is connected to an electrode socket, and the other strand of the two-strand cable is connected to a neutral electrode clamp.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] (1) The flexible part of this invention adopts a small insertion outer diameter of 1.0 to 2.8 mm, which can pass through a finer endoscope channel, breaking through the access limitations of traditional instruments to narrow cavities (such as the digestive tract and deep respiratory tract), and realizing precise intervention on subtle lesions such as mucosa and polyps, reducing trauma to normal tissues. Combined with the flexible support design of the spring tube and outer sheath, it adapts to the multi-angle turning requirements of the endoscope, and can penetrate into curved cavities or complex anatomical sites, avoiding mechanical damage to the cavity by rigid instruments.

[0031] (2) This invention relies on a dedicated host connection cable, which is equipped with an outwardly protruding interface structure and electrode identification function to prevent unintended application. It achieves the plasma effect conversion of monopolar instruments through a monopolar or bipolar interface structure. It excites 40-70℃ low-temperature plasma through saline medium. Compared with traditional high-frequency electrosurgical units, it truly excites the plasma effect, which can more efficiently break tissue molecular bonds. It achieves sharp cutting, thorough vaporization, and precise drilling, while achieving low temperature, better cutting and hemostasis effects, significantly reducing thermal damage and the risk of burns to surrounding healthy tissues. It is especially suitable for surgery in mucosa and nerve-dense areas. The cylindrical electrode head achieves efficient hemostasis through large-area adhesion; the conical electrode head takes into account hemostasis, cutting and deep tissue penetration; the anti-adhesion coating avoids the accumulation of charred eschar, ensures energy output stability, and reduces interruption of eschar removal during surgery.

[0032] (3) The water outlet holes and water flow guide grooves distributed on the side and surface of the electrode head of this invention work together with the water outlet cavity of the outer sheath tube to achieve "real-time water injection → directional flushing → precise cooling" throughout the operation, eliminating the need for preoperative watering or intraoperative watering removal, thus improving surgical efficiency; the auxiliary water outlet holes specifically flush the end of the electrode head, and together with the axial diffusion of the water flow guide groove, form a three-dimensional flushing net to thoroughly remove debris and blood, maintaining a clear surgical field. The suction hole + suction through hole construct a high-flow suction channel, and together with the cutting and pulverizing wires built into the suction hole, larger particles of tissue are pulverized by plasma vaporization, solving the problem of easy blockage of traditional suction tubes and improving the suction patency. The spatial layout of pre-fluidization and mid-suction enhances fluid circulation, avoids fluid accumulation in the surgical area, and reduces repetitive operations caused by obstruction of the field of vision.

[0033] (4) The outer sheath of this invention integrates a suction through-hole, a conductive wire hole, and a water outlet chamber, achieving triple functions of suction, conduction, and flushing in a single channel, reducing the number of puncture channels and conforming to the minimally invasive concept; the connecting tube simultaneously undertakes the functions of "conduction, water outlet, and mechanical connection", optimizing the utilization of internal space and avoiding interference from multiple pipelines. The water injection flow rate is precisely controlled by a regulating valve, and in conjunction with the low flow mode for patients with cardiopulmonary insufficiency, complications such as pulmonary edema and aspiration are prevented; the conductive wire is arranged in an independent chamber and sealed with an epoxy resin layer to ensure electrical insulation and avoid the risk of short circuit; the spring tube flexibly supports the suction tube to prevent bending and blockage, ensuring stable negative pressure.

[0034] (5) The anti-slip texture of the handle of this invention improves grip stability, and the tail cap and connecting pin enable quick docking of the device, reducing the time spent on assembly during surgery. The telescopic design of the cutting electrode supports precise operation of "superficial fine adjustment → deep reinforcement", adapting to different tissue thickness requirements. Through the functional combination of "vaporization / perforation (conical head), hemostasis by fitting (cylindrical head), and water suction circulation (multi-electrode wire, plane)", it covers multiple scenarios such as gastrointestinal polyp removal, respiratory mucosal repair, and ablation. Compared with traditional high-frequency electrodes, the cutting and hemostasis efficiency is improved, and the tissue shrinkage / ablation effect is more uniform. In summary, this blade, through the synergistic design of minimally invasive accessibility, low-temperature plasma, water circulation-suction closed loop, and multi-functional integration, achieves more precise and safer operation, clearer and more efficient surgical field, less damage and faster recovery, which is significantly better than traditional endoscopic surgical electrodes, providing more reliable technical support for minimally invasive surgery. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1 of the present invention;

[0037] Figure 3 This is a cross-sectional schematic diagram of the electrode head, spring tube, and outer sheath of the present invention;

[0038] Figure 4 This is a schematic diagram of the electrode head of the present invention;

[0039] Figure 5 This is a perspective view of the inside of the handle in embodiments 3-4 of the present invention;

[0040] Figure 6 This is a schematic diagram of the internal structure of the handle in embodiments 3-4 of the present invention;

[0041] Figure 7 This is a schematic diagram of the electrode head in Embodiment 2 of the present invention;

[0042] Figure 8 This is a partial schematic diagram of the electrode head in Embodiment 2 of the present invention;

[0043] Figure 9 This is a schematic diagram of the handle in Embodiment 2 of the present invention;

[0044] Figure 10 This is a schematic diagram of the electrode head in Embodiment 3 of the present invention;

[0045] Figure 11 This is a schematic diagram of the installation of the connector, conductive wire, and suction tube of the present invention;

[0046] Figure 12 This is a schematic diagram of the electrode head in Embodiment 4 of the present invention;

[0047] Figure 13 This is a schematic diagram of the outer sheath of the present invention;

[0048] Figure 14 This is a schematic diagram of the planar electrode head of Embodiment 5 of the present invention;

[0049] Figure 15 This is a schematic diagram of the dedicated host connection cable for the present invention.

[0050] Explanation of the numbers in the diagram: 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 shredding wire; 207. Auxiliary water outlet; 208. Hemostatic surface; 209. Main water outlet; 3. Handle; 301. Water inlet; 302. Tail cap; 4. Suction hose; 5. Spring tube; 6. Outer sheath; 601. Conductive wire hole; 602. Water outlet chamber; 603. Suction through hole; 7. Package 8. Multi-strand steel wire; 9. Connecting tube; 10. Connecting pin; 11. Flexible wire; 12. Cutting electrode; 13. Cutting electrode protrusion; 14. Electrode wire; 15. Conductive wire; 16. Electrode socket; 17. Connector; 18. Hemostatic electrode; 19. Suction tube; 20. Cable; 21. Protective sleeve; 22. Connecting sleeve; 23. Process hole and process pin; 24. Connecting plug; 25. Slider; 26. Dedicated host interface; 27. Electrode identification module; 27. Neutral electrode clamp. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0052] Example 1:

[0053] Please see Figure 1-4 15. An endoscopic monopolar plasma radiofrequency ablation surgical electrode tip, comprising a flexible part 1, an electrode head 2, and a handle 3. The surface of the handle 3 is provided with anti-slip texture. One end of the flexible part 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 part 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 part 1 from bending. The connection between the front end hole of the handle 3 and the flexible part 1 is sealed with glue. The flexible part 1 has a smaller insertion outer diameter (1.0~2.4mm), which can pass through a narrower endoscopic channel, enabling minimally invasive surgery under the visualization of a flexible endoscopic, and can reach narrower human cavities or disease sites. The surface of the electrode head 2 has an anti-adhesion coating to ensure stable energy output and prevent tissue accumulation, carbonization, and eschar formation.

[0054] In this application, the electrode head 2 has an anti-adhesion coating on its surface, and the electrode head 2 is cylindrical or conical; the cylindrical electrode head is used to contact the tissue surface to achieve adhesion; the conical electrode head can penetrate the tissue to enter deeper layers. 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 perforation, and the conical head can better penetrate the tissue to enter deeper layers under the action of energy.

[0055] The handle 3 is equipped with a water injection port 301, which is used to connect to the water injection hose via a Luer locking connector. This water injection function enables cooling to achieve cryogenic surgery, ensuring tissue surface hydration and stable energy output. It also allows for wound irrigation, ensuring a clear surgical field for more comprehensive exploration and treatment. With the water injection function, under saline conditions and in the device's plasma mode, plasma can be generated. This generated plasma rapidly breaks the molecular bonds between tissues, achieving a low temperature of 40-70℃. This low-temperature environment is safer, reduces surgical risk, improves treatment efficacy, minimizes impact on healthy tissue, and reduces thermal damage. Compared to traditional high-frequency endoscopic monopolar surgery, monopolar endoscopic plasma surgery electrodes have stronger cutting, vaporization, and perforation capabilities, resulting in better hemostasis, ablation, and shrinkage effects.

[0056] Multiple 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 electrode head 2 surface. This allows for simultaneous water discharge during the surgical procedure, solving the problems of pre-use soaking and removal of soaking during use, improving surgical efficiency, and ensuring clinical results. The flexible part 1 includes, from the inside out, a plastic-coated multi-strand steel wire 7, a spring tube 5, and an outer sheath tube 6. The plastic-coated multi-strand steel wire 7 is used to reduce resistance and conduct electricity to the electrode. One end of the electrode head 2 extends into 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 discharge.

[0057] The rear end surface of electrode head 2 is coated with adhesive to form a seal at the connection with the inner cavity of spring tube 5, and the outer connection is laser welded around to ensure a firm connection.

[0058] A through groove is provided on the connecting pipe 8. A cavity is formed between the plastic-coated multi-strand steel wire 7 and the outer wall of the connecting pipe 8 and the inner wall of the spring tube 5 for water to flow through. The water flows through the cavity and into the connecting pipe 8 from the through groove, and then into the electrode head 2 and the water outlet 201.

[0059] In this application, a tail cap 302 is provided at the end of the handle 3, and a connecting pin 9 is provided on the tail cap 302. The connecting pin 9 is connected and conductive to the plastic-coated multi-strand steel wire 7 through a flexible wire 10 and a connecting sleeve 21. The connecting pin 9 is used to connect to the instrument interface electrode socket 14. The connection points of the connecting pin 9, the flexible wire 10, the connecting sleeve 21, and the plastic-coated multi-strand steel wire 7 at the end of the handle 3 are sealed and insulated with adhesive. The inside of the tail cap pin and the connection point between the flexible wire and the plastic-coated multi-strand steel wire are all sealed and insulated with insulating tubes and epoxy adhesive.

[0060] Equipped with a water injection function, for use during respiratory surgery:

[0061] 1) In routine operation, the amount of rinsing per rinse should be controlled at 20-50mL, and the total amount should not exceed 200-300mL (adult).

[0062] 2) Pediatric patients: Adjust according to weight (e.g., 5-10 mL / kg), the total amount is significantly lower than that of adults.

[0063] 3) Patients with cardiopulmonary insufficiency: The flow rate needs to be further reduced to avoid excessive volume overload.

[0064] 4) Equipment limitations: Endoscopic irrigation systems are typically designed for a safe flow rate (e.g., 50-100 mL / min).

[0065] The water flow rate can be controlled by the regulating valve on the water injection hose 4, which can effectively avoid complications (such as pulmonary edema, infection or aspiration).

[0066] Example 2:

[0067] Please see Figure 7-9 The difference from Embodiment 1 is that: a water outlet slit is provided in the middle of the electrode head 2, and a water outlet groove 202 is also provided on the inner wall of the electrode head 2, which is connected to the water outlet hole 201; water flows through the water outlet hole 201 into the water outlet groove 202 and diffuses along the outer wall and middle of the electrode head 2, washing away blood and debris and exposing the surgical interface. The continuous water flow removes the heat generated during electrode operation, preventing local tissue from being carbonized / burned due to high temperature.

[0068] A hemostatic electrode 16 is provided at the end of the electrode head 2. The hemostatic electrode 16 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 treat bleeding at the edge of the cutting surface, simultaneously stopping bleeding during the cutting operation and improving efficiency. A cutting electrode 11 is provided through the middle of the electrode head 2. Figure 9The slider 24 shown can extend and retract back and forth under its influence, allowing the exposed length of the cutting electrode protrusion to be controlled: when cutting superficial tissue, the exposed protrusion is shortened to avoid excessive damage; when cutting deep tissue, the protrusion is extended to enhance 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. A cutting electrode protrusion 1101 is provided at one end of the cutting electrode 11 extending to the outer side of the hemostatic electrode 16. The cutting electrode protrusion 1101 is used to lift tissue during surgery. Water flows through the gap, continuously cooling the cutting electrode 11 and preventing the electrode from overheating, deforming, or adhering to tissue. The cutting electrode protrusion 1101 can be made of conductive material as the energy release end of the cutting electrode, which outputs high-frequency electricity or plasma energy when energized to achieve targeted cutting of the lifted tissue and improve cutting accuracy; alternatively, a non-conductive material can be used as an electrode hook to lift tissue and adjust and view the lesion site. This embodiment achieves the surgical effect of "precise cutting + minimally invasive hemostasis + clear surgical field" by synergistic operation of "rinsing → lifting → cutting → hemostasis" combined with the low temperature advantage of plasma technology, which is particularly suitable for delicate operation under endoscopy.

[0069] like Figure 9 As 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 inside the connecting plug 23 for sealing and preventing water leakage, and a spring is provided for conducting electricity.

[0070] Example 3:

[0071] Please see Figure 5-610-11. A water flow guide groove 203 is provided axially on the outer wall of the electrode head 2. The water flow guide groove 203 is connected to the water outlet 201, which has a certain inclination angle. The water flow guide groove 203 guides the water flow from the water outlet 201 to extend axially along the electrode head, rather than spraying locally, ensuring all-round irrigation 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 to the suction hose 4. The end of the suction tube 17 near the electrode head 2 is connected to the inner end of the suction hole 204, and the end of the suction tube 17 near the handle 3 is connected to the suction hose 4. A suction tube 17 is provided inside the spring tube 5, and the inner end of the suction hole 204 is connected to the suction tube 17. Irrigation fluid, oozing blood, and debris from the surgical area are sucked in through the suction hole 204 and discharged from the body through the suction tube 17. The system clears the field of vision in real time, ensuring the precision of surgical procedures. The suction tube is internally housed within a spring tube, utilizing its flexible support properties to prevent the suction tube from folding due to handle bending (ensuring unobstructed suction) and to accommodate multi-angle manipulation of the handle during endoscopic surgery. The suction port 204 is located in the center of the electrode head. Electrode wires 12 are distributed at the center of the electrode head 2's end, which can pulverize large soft tissue particles through plasma vaporization. This, along with the electrode wires 12 at the end, forms a "rinsing, suction, and pulverizing" spatial layout, enhancing the efficiency of fluid circulation in the surgical area, ensuring continuous and unobstructed suction, and preventing surgical interruptions due to blockage. The electrode head 2 is equipped with a process hole and a positioning pin 22. The positioning pin passes through the process hole to connect and fix the electrode head 2 to the spring tube 5.

[0072] Multiple electrode wires 12 are provided at the end of the electrode head 2. Multiple through holes are opened along the axial direction of the electrode head 2, providing axial passageways for the electrode wires, fixing the extension length and angle of the electrode wires, preventing electrode wire deviation during surgery, and ensuring spatial precision of energy application. Multiple conductive wires 13 are arranged between the outer wall of the suction tube 17 and the inner wall of the spring tube 5. The electrode wires 12 pass through the through holes and connect to the conductive wires 13 in sequence. The electrode wires 12 achieve "multi-point / surface" tissue action (such as large-area hemostasis and cutting) through high-frequency electricity or plasma energy, which is more efficient and has a more uniform energy distribution and effect compared to traditional single electrodes. The multiple electrode wires 12 arranged at the end can adapt to the contour of complex surgical areas (the electrode wires conform to curved tissue). The conductive wires 13 transmit the electrical energy / control signals from the handle connector to the electrode wires to achieve energy output. The arrangement of the conductive wires 13 through the gap between the outer wall of the suction tube and the inner wall of the spring tube avoids interference between the conductive wires 13 and the fluid channels (suction tube, spring tube), while ensuring electrical insulation (preventing short circuits) and mechanical stability (preventing entanglement).

[0073] A connector 15 is provided inside the handle 3. The spring tube 5 is connected and fixed to the connector 15. One end of the conductive wire 13 passes through the connector 15 and is fixed inside the connecting sleeve 21. The connecting sleeve 21 is connected to the connecting pin 9 via a flexible wire 10, distributing the high-frequency electro / plasma signal from the main unit to multiple conductive wires 13. This supports simultaneous operation of multiple electrode wires (such as partial electrode wire cutting or partial coagulation) or time-division triggering (optimizing energy output timing). The connecting sleeve 21 anchors the end of the conductive wire 13 and is sealed with glue to prevent the conductive wire from loosening or shifting during surgical operations, ensuring the reliability of the electrical connection.

[0074] In this embodiment, the water flow guide groove 203 and water outlet 201 create a rinsing environment to remove interference and cool the electrode; the suction hole 204 and suction tube 17 create a suction channel to maintain a clear surgical field; the electrode wire 12, conductive wire 13, connecting sleeve 21, flexible wire 10, and connecting pin 9 create 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 gastroscopy, colonoscopy, bronchoscopy, etc.). Figure 5-6 The electrode socket 14 in the handle 3 is connected to the connecting pin 9.

[0075] Example 4:

[0076] Please see Figure 5-6 12-13, an aspiration hole 204 is provided in the middle of the electrode head 2, and multiple water flow guide grooves 203 are provided along its axial direction on the outer wall of the electrode head 2. An aspiration through hole 603 is located in the middle of the outer sheath tube 6 along its axial direction, and the aspiration through hole 603 communicates with the aspiration hole 204. A conductive wire hole 601 and a water outlet chamber 602 are provided in the outer sheath tube 6 along its circumference. 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 chamber 602 delivers the rinsing fluid to the water flow guide groove 203 of the electrode head 2. The independent chamber ensures stable water pressure (avoiding interference from negative pressure during aspiration with the flushing flow rate). The circumferential distribution, in conjunction with the guide grooves, achieves uniform water outlet from multiple directions. A single outer sheath tube integrates aspiration, conductivity, and flushing functions, reducing the number of puncture channels during surgery. The aspiration through hole 603 undertakes the main aspiration function, with a large diameter ensuring aspiration efficiency, and also serves as the mechanical support core of the outer sheath tube.

[0077] The water flow guide groove 203 on the outer wall of the electrode head 2 and the water outlet cavity 602 at the end of the outer sheath tube 6 form a water outlet 201, which is the transition interface between the water outlet cavity of the water outlet 201 and the water flow guide groove 203. This transforms the cavity-type water flow in the water outlet cavity of the outer sheath tube 6 into the channel-type water flow in the guide groove, achieving an orderly conversion of the water flow pattern. In this embodiment, the position of the water outlet 201 (outer wall of the electrode head) determines that the irrigation fluid is sprayed radially outward along the electrode head, directly acting on the surface of the surgical area tissue to enhance irrigation and cooling.

[0078] Example 5:

[0079] Please see Figure 5-6 14. A cutting and pulverizing wire 206 is provided in the suction hole 204 at the end of electrode head 2. The end of electrode head 2 is flat, with an auxiliary water outlet 207 on the flat surface and a main water outlet 209 on the side of electrode head 2. The cutting and pulverizing wire 206 pulverizes large soft tissue particles through plasma vaporization, ensuring continuous and smooth suction and avoiding interruption of surgery due to blockage. The pulverized fine particles are more easily drawn away by negative pressure, reducing the waste of repeated adjustments to the suction position due to lack of movement, and improving the purification speed of the surgical area. The auxiliary water outlet 207 sprays water directly onto the end for targeted flushing; the main water outlet 201 ensures sufficient water volume during hemostasis and cutting processes, preventing water volume reduction during tissue adhesion.

[0080] A dedicated host connection cable is used in the endoscopic monopolar plasma radiofrequency ablation surgical electrode head described in Examples 1-5. The dedicated host connection cable is a dual-strand cable. One end of the dual-strand cable is provided with a dedicated host sub-interface 25. One strand of the dual-strand cable 18 is connected to an electrode socket 14, and the other strand of the dual-strand cable 18 is connected to a neutral electrode clamp 26.

[0081] like Figure 15 The diagram shows the structure of the dedicated host sub-interface 25, which has an outwardly protruding interface structure to prevent mis-insertion. The dedicated host sub-interface 25 is connected to the electrode socket 14 and the neutral electrode clip 26. The neutral electrode clip 26 is used to connect and adhere the neutral electrode to the human body. The host has an online detection function to detect the adhesion and conductivity between the neutral electrode and the human body to prevent electric burns. The dedicated host sub-interface 25 has a bipolar interface, which realizes the plasma effect conversion of the monopolar instrument through the bipolar interface structure. Unlike the high-frequency electrothermal effect of traditional high-frequency electrosurgical knives, it truly stimulates the plasma effect, achieves low temperature, and better cutting and hemostasis effects.

[0082] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of 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 includes a flexible part (1), an electrode head (2) and a handle (3). The electrode head (2) has multiple water outlet holes (201) on its side. The handle (3) has a protective sleeve (19) at its front end. One end of the flexible part (1) is connected to the electrode head (2), and the other end of the flexible part (1) passes through the protective sleeve (19) and is connected to the handle (3). The electrode head (2) has an anti-stick coating on its surface, and a water flow guide groove (203) is provided on the outer wall of the electrode head (2) along the axial direction. The water flow guide groove (203) is connected to the water outlet (201). The electrode head (2) has a suction hole (204) in the middle, which is used to connect to the suction hose (4); The handle (3) is provided with a water inlet (301), which is used to connect to a water inlet hose; The flexible part (1) includes a plastic-coated multi-strand steel wire (7), a spring tube (5), and an outer sheath tube (6) arranged sequentially from the inside to the outside. One end of the electrode head (2) extends into the spring tube (5) and is connected to the plastic-coated multi-strand steel wire (7) through a connecting tube (8). The connecting pipe (8) has a through groove, and the plastic-coated multi-strand steel wire (7) and the outer wall of the connecting pipe (8) form a cavity with the inner wall of the spring tube (5); The outer sheath (6) has an attraction through hole (603) in the middle of its axial direction. The attraction through hole (603) is connected to the attraction hole (204). The outer sheath (6) has a conductive wire hole (601) and a water outlet cavity (602) in the circumferential direction. The spring tube (5) is provided with a suction tube (17). The end of the suction tube (17) near the electrode head (2) is connected to the inner end of the suction hole (204), and the end of the suction tube (17) near the handle (3) is connected to the suction hose (4).

2. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The handle (3) has an anti-slip texture on its surface. The handle (3) has a tail cap (302) at its end. The tail cap (302) has a connecting pin (9). The connecting pin (9) is connected to the plastic-coated multi-strand steel wire (7) through a flexible 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 electrode head (2) is cylindrical or conical; the cylindrical electrode head is used to contact the tissue surface to achieve hemostasis; the conical electrode head is used for hemostasis, cutting and vaporization punching, and can penetrate the tissue to enter 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: The electrode head (2) is provided with a hemostatic electrode (16) at the end, and 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). The cutting electrode (11) extends to the outer end of the hemostatic electrode (16) and is provided with a cutting electrode protrusion (1101).

5. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The electrode head (2) is provided with a plurality of electrode wires (12) at its end. The electrode head (2) is provided with a plurality of through holes along the axial direction. 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). 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). The positioning pin passes through the process hole to connect and fix the electrode head (2) to the spring tube (5).

6. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The outer wall of the electrode head (2) is provided with a water flow guide groove (203) which is connected to the water outlet cavity (602) at the end of the outer sheath tube (6) to form a water outlet hole (201).

7. The endoscopic monopolar plasma radiofrequency ablation surgical electrode tip according to claim 1, characterized in that: The electrode head (2) has a cutting and crushing wire (206) in the suction hole (204) at the end of the electrode head (2). The end of the electrode head (2) is set as a plane, and an auxiliary water outlet hole (207) is opened at the plane. A main water outlet hole (209) is opened on the side of the electrode head (2).

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

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