Plasma surgical device, surgical electrode and electrode blade

Abstract

The present invention relates to the field of medical device technology, and provides a plasma surgical device, a surgical electrode, and an electrode blade. Specifically, in order to address the problem that the first suction channel of the plasma surgical electrode in the prior art is easily clogged, a plasma electrode blade is provided, comprising an insulating seat, the insulating seat having an end face and a first suction channel penetrating the end face. The first electrode wire sinking section is provided at the entrance of the first suction channel of the present invention, and the tissue at the entrance of the first suction channel is cut again by the action of the electric field, thereby effectively reducing the blockage at the entrance of the first suction channel. In addition, the present invention also provides a plasma surgical electrode with the above-mentioned blade, comprising a blade rod, a plasma electrode blade is provided at one end of the blade rod, and a first connecting portion is provided at the other end. The first connecting portion is used to achieve quick connection with other plasma surgical electrode handles, thereby greatly reducing the cost of the plasma surgical electrode. The present invention also provides a plasma surgical device with the above-mentioned plasma surgical electrode.

Description

Technical Field

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

[0002] When current passes through a conductor, due to the conductor's resistance, the current performs work, converting electrical energy into heat. This heat is called Joule heat. When high-frequency current passes through electrodes, a large amount of local Joule heat is generated between the electrodes, causing the electrolyte solution (such as saline) on the electrode surface to form a plasma vapor layer containing free electrons, ions, neutral chemical groups, and other neutral substances. Charged particles in the plasma are accelerated by the electric field, bombarding the tissue surface, breaking the molecular bonds of tissue cells and directly vaporizing or carbonizing biomacromolecules such as proteins, thereby achieving tissue cutting, ablation, and hemostasis.

[0003] In clinical practice, plasma electrode blades are commonly used to perform tissue cutting, ablation, and hemostasis at low temperatures (40°C to 70°C), particularly in ENT surgeries. In practice, plasma electrode blades are designed to be very compact for ease of operation, with a small inner diameter for the first suction channel. During surgery, this channel can become clogged or jammed due to blood and residual tissue from the affected area. Summary of the Invention

[0004] The present invention aims to at least solve the problem in the prior art that the first suction channel of a plasma surgical electrode is easily clogged, and further provides a plasma electrode cutter head.

[0005] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is provided: a plasma electrode cutter head, comprising an insulating seat and at least one first electrode wire and at least one second electrode wire, wherein the insulating seat has an end face and is provided with a first suction channel passing through the end face; the first electrode wire is provided on the end face, and the first electrode wire is provided with a sinking section, and the sinking section extends into the first suction channel; the second electrode wire is provided on the end face, and the second electrode wire is spaced apart from the first electrode wire; and further comprising an energy transmission connector and an energy transmission line connected to each other, wherein the first electrode wire and the second electrode wire are connected to the energy transmission line via the energy transmission connector.

[0006] Furthermore, the second electrode wire is provided with a convex section; and a projection of the convex section on the end surface falls within a range defined by the first suction channel.

[0007] Furthermore, the ratio of the depth of the submerged section in the first suction channel to the width of the first suction channel is 0.7 to 1.2.

[0008] Furthermore, the first electrode wire includes a first connecting segment and a second connecting segment, and one side of the first connecting segment and one side of the second connecting segment are both inserted into the end surface; the other side of the first connecting segment extends outside the end surface, and the projection of its end on the end surface falls within the range defined by the first suction channel; the other side of the second connecting segment extends outside the end surface, and the projection of its end on the end surface falls within the range defined by the first suction channel; a sinking segment is provided between the first connecting segment and the second connecting segment.

[0009] Furthermore, the sinking section includes a first sinking arm and a second sinking arm connected at an angle.

[0010] Furthermore, the first sinking arm and the second sinking arm form a sinking section, and the ratio of the height to the opening width of the sinking section is 0.6 to 2.2.

[0011] Furthermore, the ratio of the height of the protruding section above the end surface to the projected width of the first suction channel is 0.5 to 0.83.

[0012] Furthermore, the second electrode wire includes a third connecting segment and a fourth connecting segment, and one side of the third connecting segment and one side of the fourth connecting segment are both inserted into the end surface; the other side of the third connecting segment extends outside the end surface, and the projection of its end on the end surface falls within the range defined by the first suction channel; the other side of the fourth connecting segment extends outside the end surface, and the projection of its end on the end surface falls within the range defined by the first suction channel; a raised segment is provided between the third connecting segment and the fourth connecting segment.

[0013] Furthermore, the raised section includes a first raised arm and a second raised arm connected at an angle.

[0014] Furthermore, the first protruding arm and the second protruding arm form a protruding segment, and the ratio of the height to the opening width of the protruding segment is 0.3 to 2.1.

[0015] When the present invention is used in practice, the insulating seat serves as a supporting element, and the first electrode wire and the second electrode wire are installed on the insulating seat, wherein a first suction channel is provided in the middle of the insulating seat, and a sinking section is provided on the first electrode wire, extending into the first suction channel. The congestion in the first suction channel mainly occurs when the entrance of the first suction channel is blocked. The present invention creatively sets a first electrode wire sinking section at the entrance. After the first electrode wire and the second electrode wire transmit energy through the energy transmission line, the first electrode wire and the second electrode wire's portion located outside the end face cuts the patient's tissue, and the cut tissue and its related mixture are extracted through the first suction channel. In this process, the electric field effect of the first electrode wire sinking section is used to crush and cut the tissue at the entrance of the first suction channel again. Compared with the traditional technical idea of ​​minimizing the blocking area of ​​the first suction channel as much as possible, the present invention uses the electric field effect to perform a second cutting of the blocked tissue, effectively reducing the blockage at the entrance of the first suction channel and ensuring the normal operation of the operation.

[0016] Another object of the present invention is to provide a plasma surgical electrode to solve the problem of high production cost and easy waste of resources in the prior art of plasma surgical electrodes.

[0017] Specifically, a plasma surgical electrode comprises:

[0018] a knife bar, wherein the knife bar is provided with a first housing;

[0019] As mentioned above, the plasma electrode cutter head is arranged at one end of the cutter rod, and the first suction channel in the plasma electrode cutter head extends into the first shell; and the first connecting part is arranged at the other end of the cutter rod away from the plasma electrode cutter head; the first connecting part is provided with a mechanical connection unit, an energy connection unit and a pipeline connection unit; the mechanical connection unit is located on the first shell, and is used for detachably connecting an external operating handle assembly; the energy connection unit is connected to the plasma electrode cutter head, and is used to deliver energy to the plasma electrode cutter head; the pipeline connection unit is connected to the first suction channel, and is used to deliver fluid in the first suction channel.

[0020] Furthermore, it also includes: a sensor, which is arranged at one end of the tool rod close to the plasma electrode tool head, or is arranged at the plasma electrode tool head; the first connecting part is also provided with a signal transmission unit connected to the sensor, and the signal transmission unit is used to transmit signals between the sensor.

[0021] A plasma surgical device comprises the plasma surgical electrode as described above, and an operating handle assembly; the operating handle assembly comprises a handle body, on which a suction unit and a cable unit are provided; the operating handle assembly is also provided with a second connecting portion, the second connecting portion being located at the front end of the handle body, and the second connecting portion and the first connecting portion being detachably connected via a mechanical connecting unit; the suction unit is used to connect to a pipeline connecting unit and to suck the fluid; the cable unit is used to transmit energy to the energy connecting unit.

[0022] Furthermore, the second connecting portion is provided with a radial groove, and the mechanical connecting unit includes at least one hook, and the hook is detachably connected to the radial groove.

[0023] Furthermore, the second connecting portion is provided with a guide groove; and the mechanical connecting unit further includes a guide protrusion matching the second connecting portion.

[0024] Furthermore, a second suction channel is provided in the operating handle assembly, one end of the second suction channel is connected to the suction unit, and a second cone is provided at the other end of the second suction channel; the pipeline connection unit is provided with a first cone matching the second cone.

[0025] Furthermore, the second connection portion is provided with an energy output unit, and the energy output unit is matched and connected with the energy connection unit.

[0026] Furthermore, the second connecting portion is provided with a signal acquisition unit, and the signal acquisition unit is matched and connected with the signal transmission unit.

[0027] Furthermore, the second suction channel is located in the middle of the second connecting portion; the energy output unit and / or the signal acquisition unit are arranged along the circumference of the second suction channel.

[0028] Furthermore, buttons are provided on the handle body.

[0029] When the present invention is used, the plasma surgical electrode includes a rod-shaped blade, the rear end of which is provided with a first shell; a plasma electrode blade head is provided at one end of the blade, and the plasma electrode blade head includes a coaxially arranged outer insulating layer, an outer electrode, an insulating seat, and an inner electrode, and a first suction channel is also provided in the insulating seat, and the first suction channel extends into the first shell; a first connecting portion is provided on the side of the blade away from the plasma electrode blade; wherein the first connecting portion is provided with a mechanical connection unit, an energy connection unit, and a pipeline connection unit, and the first shell is used to detachably connect to an external operating handle assembly through the mechanical connection unit, thereby improving the stability and safety of the entire structure during surgery; the energy connection unit provides energy to the outer electrode and the inner electrode by transmitting energy, ensuring a reliable electric field during operation; and the pipeline connection unit is used to transport fluids. The first connecting portion may also be provided with a signal transmission unit, which is used to transmit signals, including control electrode operation signals, pipeline suction or liquid delivery signals, temperature signals, tissue signals, etc.

[0030] The present invention forms an independent plasma surgical electrode from the front part of a traditional plasma surgical electrode, which is quickly connected to an external operating handle assembly through a first connecting portion. In actual use, directly replacing the plasma surgical electrode of the present invention can also achieve the effect of avoiding cross infection. Compared with the existing technology, its external operating handle assembly can be used multiple times, greatly reducing the cost of the plasma surgical electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of a cutter bar with a plasma electrode cutter head according to the present invention from a first perspective.

[0032] Figure 2 yes Figure 1 Enlarged schematic diagram of area A in the middle.

[0033] Figure 3 It is a partial schematic diagram of one embodiment of the plasma electrode cutter head of the present invention.

[0034] Figure 4 It is a partial cross-sectional schematic diagram of one embodiment of the plasma electrode cutter head of the present invention.

[0035] Figure 5 It is a partial schematic diagram of one embodiment of the first electrode wire of the present invention.

[0036] Figure 6 It is a partial schematic diagram of another embodiment of the first electrode wire of the present invention.

[0037] Figure 7 It is a partial schematic diagram of another embodiment of the first electrode wire of the present invention.

[0038] Figure 8It is a partial schematic diagram of another embodiment of the first electrode wire of the present invention.

[0039] Figure 9 It is a partial schematic diagram of another embodiment of the second electrode wire of the present invention.

[0040] Figure 10 This is a schematic diagram of the plasma surgical electrode of the present invention from a first perspective.

[0041] Figure 11 This is a schematic diagram of the plasma surgical electrode of the present invention from a second viewing angle.

[0042] Figure 12 This is a schematic diagram of a partial disassembly of the plasma surgical device of the present invention.

[0043] Figure 13 It is a cross-sectional schematic diagram of one embodiment of the plasma surgical device of the present invention.

[0044] Figure 14 yes Figure 13 Enlarged schematic diagram of area B in the middle.

[0045] Figure 15 yes Figure 13 Enlarged schematic diagram of area C in the middle.

[0046] Reference numerals:

[0047] The blade rod 100, the outer insulating layer 101, the outer electrode 102, the insulating seat 103, the plasma electrode blade head 110, the end face 111, the first suction channel 112, the first connecting portion 120, the first shell 1201, the mechanical connection unit 121, the hook 1211, the guide protrusion 1212, the pipeline connection unit 122, the first cone 1221, the signal transmission unit 123, the energy connection unit 124, the energy transmission line 1241, the energy transmission connector 1242, the sensor 130, the first electrode wire 200, the first connecting section 201, the second connecting section 2 02, sinking section 210, first sinking arm 211, second sinking arm 212, second electrode wire 300, third connecting section 301, fourth connecting section 302, raised section 310, first raised arm 311, second raised arm 312, operating handle assembly 400, handle body 401, second shell 402, second connecting part 410, radial groove 411, guide groove 412, suction unit 420, second suction channel 421, second cone 4211, cable unit 430, energy output unit 431, signal acquisition unit 432, button 440. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0049] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the present invention, the end face refers to the end face of the insulating seat 103 close to the patient's tissue, the inner side of the end face refers to the side of the end face close to the operating handle, and the outer side of the end face refers to the side of the end face close to the patient's tissue. In the present invention, the front end refers to the end close to the patient's tissue, and the rear end refers to the end away from the tissue. Similarly, the description of the terms "first" or "second" and their variations is merely to distinguish between the components and does not limit the scope of this application.

[0050] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0051] In the description of the present invention, unless otherwise specified or limited, it should be noted that the term "first suction channel" refers to the suction channel within the plasma surgical electrode, including the suction channel within the plasma electrode cutter head 110; the "second suction channel" refers to the suction channel within the operating handle assembly 400. The term "inner electrode" refers to the first electrode wire 200 and / or the second electrode wire 300.

[0052] Reference Manual Figure 1 , Attachment Figure 3 , and attached Figure 4A plasma electrode cutter head 110 includes an insulating seat 103 and at least one first electrode wire 200 and at least one second electrode wire 300, the insulating seat 103 has an end surface 111 and is provided with a first suction channel 112 that passes through the end surface 111; the first electrode wire 200 is provided on the end surface 111, and the first electrode wire 200 is provided with a sinking section 210, and the sinking section 210 extends into the first suction channel 112; the second electrode wire 300 is provided on the end surface 111, and the second electrode wire 300 is spaced apart from the first electrode wire 200; and further includes an energy transmission connector 1242 and an energy transmission line 1241 that are connected to each other, and the first electrode wire 200 and the second electrode wire 300 are connected to the energy transmission line 1241 via the energy transmission connector 1242.

[0053] In one embodiment of the present invention, a plasma electrode blade head 110 is applied to a plasma surgical system for specific implementation. The plasma surgical system includes a plasma surgical electrode blade, a suction component, an operating component, an infusion component, an energy component, a control component, etc., wherein the suction component is used to aspirate cut tissue and related mixtures from a first suction channel 112; the operating component is used to operate the plasma surgical electrode blade, and the plasma electrode blade head 110 refers to the portion of the blade shaft 100 close to the patient's tissue; the infusion component is used to deliver physiological saline or other media to assist in electrode cutting; the energy component is used to provide energy to the plasma electrode blade head 110; and the control component is used to assist in control during the operation of the plasma surgical electrode. Since the above components can all be selected from existing technology components, they will not be described in detail here.

[0054] In the patent of the present invention, the energy transmission line 1241 is used to ensure efficient and stable transmission of energy during surgery. One end of the energy transmission line is connected to the energy component, and the other end is connected to the energy transmission connector 1242; the energy transmission connector 1242 serves as a transfer station for energy transmission, accurately transmitting the energy from the energy component to the surgical electrode, including the first electrode wire and the second electrode wire connected thereto; in the present invention, by adding the energy transmission connector 1242, which is similar to a welding point structure, it is used to maintain the first electrode wire and the second electrode wire having good electrical conductivity and mechanical stability during use, thereby improving the success rate and safety of the surgery.

[0055] In one embodiment of the present invention, the plasma electrode blade 110 may further include a coaxially arranged outer insulating layer 101, an outer electrode 102, an insulating seat 103, and an inner electrode. A first suction channel 112 is also provided within the insulating seat 103, wherein an energy transmission connector 1242 and an energy transmission line 1241 are located inside the insulating seat 103 but do not fall into the first suction channel 112 to avoid contact with fluids and short circuits. The energy transmission connector 1242 is provided near the insulating seat 103, with one end connected to the energy transmission line 1241 and the other end connected to the inner electrode, which helps to stabilize the first and second electrode wires and make their electric field strength more uniform, thereby further ensuring the therapeutic effects of cutting and ablation.

[0056] In one embodiment of the present invention, an insulating base 103 serves as a support element, and a first electrode wire 200 is mounted on the insulating base 103 and connected to the energy assembly. A first suction channel 112 is provided in the central portion of the insulating base 103, and a sinking section 210 is provided on the first electrode wire 200 to sink into the first suction channel 112. Congestion in the existing first suction channel 112 primarily occurs at the entrance to the first suction channel 112. The present invention creatively provides a sinking section 210 of the first electrode wire 200 at the entrance. After the first and second electrode wires 200 and 300 transmit energy via the energy transmission line 1241, the electric field is used to further pulverize and cut the tissue at the entrance to the first suction channel 112. Compared to the prior art approach of minimizing the obstruction area of ​​the first suction channel 112, the present invention creatively utilizes the electric field to perform a secondary cutting of the blocked tissue, effectively reducing blockage at the entrance to the first suction channel 112 and ensuring the normal operation of the surgery.

[0057] In another embodiment, referring to the attached Figure 2 , the second electrode wire 300 is provided with a raised section 310; and the projection of the raised section 310 on the end face 111 falls within the range defined by the first suction channel 112. By providing the raised section 310, it means that the second electrode wire 300 forms a raised shape on the outside of the end face 111 of the first suction channel 112, which can further increase the electric field and improve the cutting efficiency; at the same time, after the raised section is provided, when the surgical electrode abuts against the patient's tissue, it can increase the coagulation depth of the electrode knife and improve the coagulation effect. In another embodiment, two second electrode wires 300 are provided, and the two second electrode wires 300 are located on both sides of the first electrode wire 200. In specific operation, the two second electrode wires 300 are raised and abut against the skin tissue, with the first electrode wire 200 in the middle, so that the use effect is better.

[0058] In another embodiment, refer to the attached specification. Figure 5 To the attached Figure 8, the ratio of the depth of the sunken section 210 sunk into the first suction channel 112 to the width of the first suction channel 112 is 0.7 to 1.2. The depth of the sunken section 210 sunk into the first suction channel 112 of the present invention refers to the maximum distance that the sunken section 210 extends into the first suction channel 112 with the end surface 111 of the first suction channel 112 as the reference plane; the width of the first suction channel 112 refers to the opening distance of the first suction channel 112 at the projection of the sunken section 210 on the end surface 111. If the projection of the sunken section 210 on the end surface 111 is not a straight line, the opening distance of the first suction channel 112 determined by the intersection of a straight line drawn from the two end points of the projection of the sunken section 210 on the end surface 111 and the first suction channel 112 is the width of the first suction channel 112. When the ratio of the depth of the submerged section 210 sunk into the first suction channel 112 to the width of the first suction channel 112 is 0.7 to 1.2, blockage at the entrance of the first suction channel 112 can be more effectively reduced. This embodiment does not limit this specific ratio; in practical applications, 0.7, 0.8, 0.9, 1.0, 1.1, or 1.2, etc., can be selected. During surgical procedures, residual tissue may form a blockage at the entrance of the first suction channel 112 primarily because the residual tissue accumulates to a certain depth within the first suction channel 112. If the ratio of the depth of the sinking section 210 sunk into the first suction channel 112 to the width of the first suction channel 112 is lower than 0.7, it means that the depth of the sinking section 210 sunk into the first suction channel 112 is relatively shallow, and the electric field effect of the sinking section 210 on the secondary cutting of the tissue at the entrance of the first suction channel 112 is limited, and it is still possible to cause blockage; if the ratio of the depth of the sinking section 210 sunk into the first suction channel 112 to the width of the first suction channel 112 is higher than 1.2, it means that the depth of the sinking section 210 sunk into the first suction channel 112 is relatively deep, which will inevitably reduce the space at the entrance of the first suction channel 112, which will lead to insufficient space in the first suction channel 112 and cause blockage.

[0059] In another embodiment, referring to the attached Figure 2 , Attachment Figure 5 To the attached Figure 8The first electrode wire 200 includes a first connecting segment 201 and a second connecting segment 202, and one side of the first connecting segment 201 and one side of the second connecting segment 202 are both inserted into the end surface 111; the other side of the first connecting segment 201 extends to the outside of the end surface 111, and the projection of its end on the end surface 111 falls within the range defined by the first suction channel 112; the other side of the second connecting segment 202 extends to the outside of the end surface 111, and the projection of its end on the end surface 111 falls within the range defined by the first suction channel 112; a sinking segment 210 is provided between the first connecting segment 201 and the second connecting segment 202. The first electrode wire 200 can be made of a conductive material such as a wire-shaped metal. The first connecting section 201 extends along the axial direction of the first suction channel 112 from the inner side of the end face 111 to the outer side away from the end face 111. A first part parallel to the end face 111 is formed by a first bend, and then a sinking section 210 is formed by a second bend. Then, a second part parallel to the end face 111 is formed by a third bend, and finally, a part parallel to the axial direction of the first suction channel 112 is formed by a fourth bend and extends to the inner side of the end face 111. In this way, both ends of the first electrode wire 200 extend to the inner side of the end face 111, and the overall structure is compact and stable and reliable after installation. At the same time, the use of this structure can reduce the blocking area of ​​the first electrode wire 200 on the first suction channel 112, thereby reducing blockage. Refer to the attached Figure 5 To the attached Figure 8 The sunken section 210 can be of various shapes, all of which can further reduce tissue blockage at the entrance of the first suction channel 112. Each sunken section design has its own unique advantages, and the most appropriate structure can be selected based on specific surgical requirements, tissue type, and surgeon preference to achieve optimal surgical results and patient recovery.

[0060] In another embodiment, as shown in the attached Figure 5 As shown, the cross-section of the sinking section 210 is U-shaped, with its bottom located in the first suction channel 112 and the opening end protruding from the end surface 111 and located outside the end surface 111; the U-shaped structure is relatively easy to implement in the processing and manufacturing process due to its simple geometric shape, thereby reducing production costs and time; in addition, the U-shaped opening design helps to guide tissue fragments and fluids to enter the first suction channel 112 more smoothly, thereby reducing the risk of blockage due to the complex shape.

[0061] In another embodiment, as shown in the attached Figure 6As shown, the cross-section of the sinking section 210 is Q-shaped, with its bottom located in the first suction channel 112, and the open end protruding from the end surface 111 and located outside the end surface 111; by being set as a Q-shaped structure, it can provide better structural support, reduce vibration and deviation, and make the surgical process more stable; at the same time, the Q-shaped design increases the surface area of ​​electrode contact, which helps to distribute the electric field energy more evenly and further improve efficiency.

[0062] In another embodiment, as shown in the attached Figure 7 As shown, the cross-section of the sinking section 210 is Y-shaped, the bottom of which is located in the first suction channel 112, and the open end protrudes from the end surface 111 and is located outside the end surface 111; by being set into a Y-shaped structure, the vertically extending part can concentrate the electric field lines to form a stronger electric field concentration area, which has higher crushing efficiency, faster dredging, and can more conveniently cut the tissue at the entrance.

[0063] In another embodiment, as shown in the attached Figure 8 As shown, the cross-section of the sinking section 210 is an inverted triangle structure, including a first sinking arm 211 and a second sinking arm 212 connected at an angle. Its tip is located in the first suction channel 112, and the open end protrudes from the end surface 111 and is located outside the end surface 111. The inverted triangle structure greatly enhances the focusing effect of the electric field through the angle design of its top and two side arms, making the secondary cutting effect at the entrance of the first suction channel 112 more significant, effectively reducing tissue residue and blockage; at the same time, the inverted triangle shape promotes the flow of the mixture, reduces eddy currents and retention, and maintains the smooth flow of the first suction channel 112; therefore, in practical applications, the inverted triangle structure formed by the first sinking arm 211 and the second sinking arm 212 is the best.

[0064] In another embodiment, referring to the attached Figure 8, the first sinking arm 211 and the second sinking arm 212 form a sinking section 210, and the ratio of the height of the sinking section 210 to the opening width is 0.6 to 2.2. The present invention forms a baseline with the endpoints of the first sinking arm 211 and the second sinking arm 212 close to the outside of the end face 111, and the maximum distance between the endpoint of the first sinking arm 211 or the second sinking arm 212 away from the outside of the end face 111 and the baseline is the height of the sinking section 210; the opening width refers to the distance formed by the two endpoints of the first sinking arm 211 and the second sinking arm 212 on the baseline after being projected onto the end face 111. Among them, the ratio of the height of the sinking section 210 formed by the first sinking arm 211 and the second sinking arm 212 to the opening width is 0.6 to 2.2, which can more effectively reduce the blockage at the entrance of the first suction channel 112. This embodiment does not impose any limitation on the specific ratio. In practical applications, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, or 2.2 may be selected. During surgical operation, if the ratio of the height and opening width of the sinking section 210 formed by the first sinking arm 211 and the second sinking arm 212 is lower than 0.6, it means that the sinking depth of the sinking section 210 in the first suction channel 112 is relatively shallow, and the electric field effect of the sinking section 210 on the secondary cutting of the tissue at the entrance of the first suction channel 112 is limited, which may still cause blockage. If the ratio of the depth of the sinking section 210 in the first suction channel 112 to the width of the first suction channel 112 is higher than 2.2, it means that the sinking depth of the sinking section 210 in the first suction channel 112 is relatively deep, which will inevitably reduce the space at the entrance of the first suction channel 112, resulting in insufficient space in the first suction channel 112 and causing blockage.

[0065] In another embodiment, referring to the attached Figure 2 , Attachment Figure 9, the ratio of the height of the protruding section 310 of the second electrode wire 300 protruding from the end face 111 to the projected width of the first suction channel 112 is 0.5 to 0.83. The height of the protruding section 310 of the present invention protruding from the end face 111 refers to the distance from the end face 111 to the farthest end of the protruding section 310 on the outside of the end face 111; the projected width of the first suction channel 112 in this embodiment refers to the opening distance of the first suction channel 112 at the projection of the protruding section 310 on the end face 111. If the projection of the protruding section 310 on the end face 111 is not a straight line, the opening distance of the first suction channel 112 determined by the intersection of a straight line drawn from the two end points of the projection of the protruding section 310 on the end face 111 and the first suction channel 112 is the projected width of the first suction channel 112. The ratio of the height of the protruding section 310 protruding from the end surface 111 to the projected width of the first suction channel 112 is 0.5 to 0.83, which can more effectively reduce blockage at the entrance of the first suction channel 112. This embodiment does not limit the specific ratio, and in actual applications, 0.5, 0.6, 0.7, 0.8, or 0.83 can be selected. If the ratio of the height of the protruding section 310 protruding from the end face 111 to the projected width of the first suction channel 112 is lower than 0.5, it means that the height of the protruding section 310 protruding from the end face 111 is relatively shallow, and the electric field effect of the protruding section 310 is not much different from the second electrode wire 300 parallel to the end face 111 in the prior art, the cutting effect is limitedly improved, and blockage may still occur; if the ratio of the height of the protruding section 310 protruding from the end face 111 to the projected width of the first suction channel 112 is higher than 0.83, it means that the height of the protruding section 310 protruding from the end face 111 is relatively large, which increases the manufacturing cost on the one hand, is not conducive to the doctor's operation on the other hand, and is also prone to thermal damage.

[0066] In another embodiment, referring to the attached Figure 2 , Attachment Figure 9The second electrode wire 300 includes a third connecting segment 301 and a fourth connecting segment 302, and one side of the third connecting segment 301 and one side of the fourth connecting segment 302 are both inserted into the end surface 111; the other side of the third connecting segment 301 extends beyond the end surface 111, and the projection of its end on the end surface 111 falls within the range defined by the first suction channel 112; the other side of the fourth connecting segment 302 extends beyond the end surface 111, and the projection of its end on the end surface 111 falls within the range defined by the first suction channel 112; a raised segment 310 is provided between the third connecting segment 301 and the fourth connecting segment 302. The second electrode wire 300 can also be made of a conductive material such as a wire-shaped metal. The third connecting section 301 extends along the axial direction of the first suction channel 112 from the inner side of the end face 111 toward the outer side away from the end face 111. A first bend is formed to form a first portion parallel to the end face 111. A second bend is then formed to form a raised section 310. A third bend is then formed to form a second portion parallel to the end face 111. Finally, a fourth bend is formed to form a portion parallel to the axial direction of the first suction channel 112 extending to the inner side of the end face 111. In this way, both ends of the second electrode wire 300 extend to the inner side of the end face 111, resulting in a compact overall structure and stable and reliable after installation. Furthermore, this structure can reduce the area of ​​the first suction channel 112 blocked by the second electrode wire 300, thereby reducing clogging.

[0067] It should be noted that if the shape of the protrusion 310 fluctuates greatly, the electric field tip effect is better, the cutting efficiency is higher, and the coagulation effect is better, but at the same time, the heat is also the most, which is most likely to cause thermal damage, which is not conducive to postoperative recovery. Therefore, pursuing a balance between thermal damage and coagulation effect has always been the goal of industry technicians. In another embodiment, refer to the attached Figure 2 , Attachment Figure 9 , the raised segment 310 includes a first raised arm 311 and a second raised arm 312 connected at an angle. Specifically, the cross-section of the raised segment 310 is a triangular structure, the tip of which is away from the outside of the end face 111, and the open end protrudes from the end face 111 close to the outside of the end face 111. This structure can increase the electric field and further increase the cutting effect, while also avoiding thermal damage to the patient's tissue due to the heating of the second electrode wire 300. In actual applications, the applicant has also experimented with a variety of raised segment 310 structures, including trapezoidal structures, arc-shaped, wavy structures, etc. However, the triangular structure formed by the first raised arm 311 and the second raised arm 312 has the best effect, not only in terms of increasing the electric field and improving cutting efficiency, but also in terms of achieving a better balance between thermal damage and coagulation effects.

[0068] In another embodiment, referring to the attached Figure 2 , Attachment Figure 9, the first protruding arm 311 and the second protruding arm 312 form a protruding section 310, and the ratio of the height of the protruding section 310 to the opening width is 0.3 to 2.1. The present invention uses the endpoints of the first protruding arm 311 and the second protruding arm 312 close to the end surface 111 to form a reference line. The maximum distance between the other endpoint of the first protruding arm 311 or the second protruding arm 312 and the reference line is the height formed by the first protruding arm 311 and the second protruding arm 312 of the protruding section 310; the opening width refers to the distance formed by the two endpoints of the first protruding arm 311 and the second protruding arm 312 on the reference line after being projected onto the end surface 111. Among them, the ratio of the height formed by the first protruding arm 311 and the second protruding arm 312 to the opening width is 0.3 to 2.1, which can more effectively balance thermal damage and coagulation effects. This embodiment does not limit its specific ratio. In practical applications, 0.3, 0.6, 0.9, 1.2, 1.5, 1.8 or 2.1 can be selected. During the surgical operation, the ratio of the height and opening width formed by the first protruding arm 311 and the second protruding arm 312 is lower than 0.3, indicating that the height of the protruding section 310 protruding from the end face 111 is relatively shallow, and the electric field effect of the protruding section 310 is not much different from the second electrode wire 300 parallel to the end face 111 in the prior art, and the cutting effect is limitedly improved, and blockage may still occur; the ratio of the height and opening width formed by the first protruding arm 311 and the second protruding arm 312 is higher than 2.1, indicating that the height of the protruding section 310 protruding from the end face 111 is relatively large, which on the one hand increases the manufacturing cost, and on the other hand is not conducive to the doctor's operation and is also prone to thermal damage.

[0069] In the present invention, reference is made to the appended Figure 10 , Attachment Figure 11 The present invention also provides a plasma surgical electrode, which includes a rod-shaped blade 100, and a plasma electrode blade head 110 with the aforementioned first electrode wire 200 and second electrode wire 300 is provided at one end of the blade 100. The plasma electrode blade head 110 can be selected from the plasma electrode blade head 110 in the aforementioned embodiment. Figure 13 , Attachment Figure 14 As shown, the plasma electrode cutter head 110 may also include an outer insulating layer 101, an outer electrode 102, an insulating seat 103 and an inner electrode that are coaxially arranged, and a first suction channel 112 is also provided in the insulating seat 103; the plasma electrode cutter head 110 can be used as a part of the cutter rod 100, or it can form a separate component connected to the cutter rod 100. Since the above components and their relative position connection relationship can be selected from existing technical components, they will not be repeated here.

[0070] In one embodiment, the reference Figure 10 To the attached Figure 15The plasma surgical electrode includes a knife rod 100, and a first shell 1201 is provided at the rear end of the knife rod 100, and a first suction channel 112 runs through the first shell 1201. In the present invention, the first suction channel 112 can be composed of one or more pipes or cavities for conveying fluids. A plasma electrode blade head 110 is provided on the side of the knife rod 100 close to the patient's tissue, and a first connecting portion 120 is provided on the side away from the plasma electrode blade head 110; wherein the first connecting portion 120 is provided with a mechanical connection unit 121, an energy connection unit 124, a signal transmission unit 123 and a pipeline connection unit 122, wherein the mechanical connection unit 121 is located on the first shell 1201, and is used for detachably connecting to an external operating handle assembly 400, thereby improving the stability and safety of the entire structure during surgery; the energy connection unit 124 is connected to the plasma electrode blade head 110, and transmits energy to the external electrode 102 and The internal electrode provides energy. Specifically, as previously described, the energy connection unit 124 is connected to the energy transmission line 1241, which in turn is connected to the energy transmission connector 1242. The energy transmission connector 1242 serves as a transfer station for energy transmission, accurately transmitting energy from the energy connection unit 124 to the surgical electrode, including to the first electrode wire and the second electrode wire connected thereto, to maintain the first electrode wire and the second electrode wire having good electrical conductivity and mechanical stability during use, ensuring a reliable electric field during operation. The pipeline connection unit 122 is connected to the first suction channel 112 for conveying fluids. The fluids of the present invention refer to tissue fragments or a mixture of tissue fragments and other media, such as blood, solution, etc., generated after the electrode cuts the tissue.

[0071] The present invention forms the front part of the traditional plasma surgical electrode into an independent plasma surgical electrode, which is quickly connected to the external operating handle assembly 400 through the first connecting part 120. In actual use, directly replacing the plasma surgical electrode of the present invention can also achieve the effect of avoiding cross infection. Compared with the existing technology, the external operating handle assembly 400 connected to the present invention can be used multiple times, greatly reducing the cost of the plasma surgical electrode.

[0072] In another embodiment, as shown in the attached Figure 13 , Attachment Figure 14As shown, the blade rod 100 is further provided with a sensor 130, which is disposed at one end of the blade rod 100 near the plasma electrode cutting head 110, or disposed on the plasma electrode cutting head 110. The sensor 130 is connected to a signal transmission unit 123. The signal transmission unit 123 is used to transmit signals, including control electrode operation signals, pipeline suction or liquid delivery signals, temperature signals, tissue signals, position signals, etc. For example, a temperature sensor can be optionally provided on the side of the outer electrode 102 near the plasma electrode cutting head 110 to sense the temperature of the plasma electrode cutting head 110 in real time during surgery and transmit the temperature to the plasma surgical electrode control unit via the signal transmission unit 123. This facilitates real-time monitoring of the temperature of the plasma electrode cutting head 110 during surgery, preventing tissue damage due to overheating and improving the safety and reliability of the surgery. In other embodiments, a flow sensor can be installed to detect the flow rate of the medium; an infrared sensor can be installed to detect the distance between the plasma electrode cutting head 110 and the patient's tissue; or a tissue recognition sensor can be installed to identify the tissue. In specific use, one or more sensors can be installed. By adding a sensor to the plasma electrode cutter head 110 or the end of the cutter bar 100 close to the plasma electrode cutter head 110, the intraoperative scene can be more clearly understood, further improving the safety and reliability of the operation.

[0073] In another embodiment, as shown in the attached Figure 12 , Attachment Figure 13 , and attached Figure 15As shown, a detachable plasma surgical device is also provided, which includes the plasma surgical electrode with the first connecting portion 120 described in the above embodiment, and also includes an operating handle assembly 400. The operating handle assembly 400 includes a handle body 401, on which a suction unit 420 and a cable unit 430 are provided. The suction unit 420 is used to suck out fluids to ensure a clear surgical field of view; the cable unit 430 is used to transmit energy, and can also be used for related signal transmission, or has the effect of transmitting energy and signals at the same time; a second connecting portion 410 is also provided at the front end of the handle body 401, and the second connecting portion 410 is located at the front end of the handle body 401 and matches the first connecting portion 120. In specific use, before surgery, a knife rod 100 and an operating handle assembly 400 can be selected as needed, and the first connecting portion 120 and the second connecting portion 410 can be connected to quickly form a plasma surgical device; after surgery, the surgical electrode can be removed from the connection and destroyed, and the operating handle assembly 400 can be further used after disinfection. Compared with the prior art, directly replacing the front end of the plasma surgical electrode device can also achieve the effect of avoiding cross infection. The operating handle assembly 400 in the present invention can be used multiple times, and because a pipeline connection unit 122 is provided, it can be applicable to any electrode knife rod with or without pipeline connection requirements, greatly reducing the cost of plasma surgical electrodes.

[0074] In the specific connection between the first connecting part 120 and the second connecting part 410, a variety of connection methods in the existing technology can be selected, for example, the first connecting part 120 and the second connecting part 410 can be connected to each other by overlapping each other; or the first connecting part 120 and the second connecting part 410 can be connected to each other by a magnetic structure.

[0075] In another embodiment, the second connection portion 410 is provided with a radial groove 411, and the mechanical connection unit 121 includes more than one hook 1211, and the hook 1211 matches the radial groove 411. Figure 12 , Attachment Figure 13 And attached Figure 15 As shown, the handle body 401 is provided with radial grooves 411 along the circumferential direction, and the outer insulating layer 101 is provided with multiple hooks 1211. During use, the hooks 1211 engage with the radial grooves 411, thereby improving the stability of the overall structure and facilitating connection and removal. Furthermore, the hooks 1211 can be optionally configured as elastic elements, which makes operation more convenient.

[0076] In another embodiment, in order to further facilitate operation, the second connecting portion 410 is provided with a guide groove 412; the mechanical connecting unit 121 further includes a guide protrusion 1212 that matches the second connecting portion 410. Figure 12 , Attachment Figure 13 , and attached Figure 15 As shown, the handle body 401 is provided with a guide groove 412 along the axial direction, and the outer insulating layer 101 is provided with a guide protrusion 1212. During use, the guide groove 412 cooperates with the guide protrusion 1212 to achieve quick installation. Furthermore, the handle body 401 can also be provided with a guide protrusion 1212 along the axial direction, and the outer insulating layer 101 can be provided with a guide groove 412, which can also achieve the same effect. This is an equivalent technical solution to the above-mentioned embodiment.

[0077] In another embodiment, as shown in the attached Figure 12 , Attachment Figure 13 , Attachment Figure 15 As shown, a second suction channel 421 is provided in the operating handle assembly 400. One end of the second suction channel 421 is connected to the suction unit 420, and the other end of the second suction channel 421 is provided with a second cone 4211. The pipeline connection unit 122 is provided with a first cone 1221 that matches the second cone 4211. During surgery, the plasma surgical electrode produces a large amount of fragmented tissue, physiological saline, and related mixtures, which are discharged through the first suction channel 112 in the middle of the plasma surgical electrode. The present invention adopts a combined structure, with the second suction channel 421 provided in the operating handle assembly 400 and the first suction channel 112 provided on the knife rod 100. The two are connected at the junction by selecting mutually matching cone surfaces, which not only ensures the smooth discharge of the related mixture, but also improves the sealing of the joint, further enhancing the safety of the surgery.

[0078] In another embodiment, the second connection portion 410 is provided with an energy output unit 431, and the energy output unit 431 matches the energy connection unit 124. Figure 12 , Attachment Figure 13 , Attachment Figure 15 As shown, a hole-shaped structure is provided at the front end of the operating handle assembly 400 as an energy output unit 431, and a needle-shaped structure matching the hole-shaped structure is provided on the shank 100 as an energy connection unit 124. During use, by inserting the energy connection unit 124 into the energy output unit 431, the two can achieve energy transmission by contact, thereby improving the reliability of energy transmission. Similarly, the second connecting portion 410 is provided with a signal acquisition unit 432 also provided as a hole-shaped structure, and the signal transmission unit 123 is provided with a needle-shaped structure matching the hole-shaped structure; during use, by inserting the signal transmission unit 123 into the signal acquisition unit 432, the two can achieve signal transmission by contact, thereby improving the reliability of signal transmission.

[0079] In another embodiment, as shown in the attached Figure 11 、 Figure 12 、 Figure 13 、 Figure 15As shown, the second connecting portion 410 includes a second shell 402 with a tubular structure, and a radial groove 411 is provided on the inner side of the second shell 402 along the circumferential direction, and a guide groove 412 is provided along the axial direction; the second suction channel 421 is located in the middle of the second shell 402; the energy output unit 431 and the signal acquisition unit 432 are both jack-shaped and evenly arranged along the second suction channel 421; connected thereto, the first connecting portion 120 also has a first shell 1201 with a tubular structure, and a plurality of hooks 1211 are provided on the outer side of the first shell 1201 along the circumferential direction, and a guide protrusion 1212 is provided along the axial direction. The first suction channel 112 is located in the middle of the first shell 1201, and the first suction channel 112 is connected to the pipeline connection unit 122; the energy connection unit 124 and the signal transmission unit 123 are both pin-shaped and evenly arranged along the outer periphery of the first suction channel 112; when connected, the pipeline connection unit 122 is docked with the second suction channel 421, the energy connection unit 124 is docked with the energy output unit 431, the signal transmission unit 123 is docked with the signal acquisition unit 432, the hook 1211 is docked with the radial groove 411, and the guide protrusion 1212 is docked with the guide groove 412; thus, a quick connection is achieved. It should be further explained that the present invention selects the first connection part 120 and the second connection part 410 connection structure to realize a combined plasma surgical device, which reduces the cost of plasma surgical electrodes in the prior art. This modular combination method also further improves the flexibility and customizability of production.

[0080] Secondly, at the connection point, the present invention creatively divides the connection into multiple units, which is not only convenient for production and manufacturing, but also for subsequent maintenance and repair. At the same time, dividing the connection into multiple units can effectively disperse the stress at the connection point, enhance the reliability and durability of the connection, and further ensure the reliability of the connection. In particular, the selection of a slot-type mechanical connection not only provides a stable physical connection, but also ensures quick alignment and easy locking during the connection process, greatly improving the convenience of operation during the operation; and the selection of a conical surface in the pipeline for sealing connection effectively prevents the leakage of waste during the operation, ensuring a safe environment for the operation and the safety of the patient. The conical surface sealing connection also has good adaptability and wear resistance, and can maintain stable sealing performance for a long time. The pinhole matching structure connection is selected for energy and signal transmission, which not only has a small contact resistance and signal loss, but can also effectively resist vibration and impact during the operation, achieve efficient and stable transmission of energy and signals, and ensure the stable operation and accurate control of the surgical electrode.

[0081] In another embodiment, Figure 12As shown, a button 440 is provided on the handle body 401. The button 440 controls the start and stop of the surgical device of the present invention, as well as the size of energy transmission, etc. Setting the button 440 on the handle body 401 also enables multiple uses, reducing the cost of plasma surgical electrodes in the prior art.

[0082] Throughout this specification, reference to terms such as "one embodiment," "another embodiment," "other embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0083] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A plasma electrode cutter head, characterized in that: The invention comprises an insulating seat (103), at least one first electrode wire (200) and at least one second electrode wire (300); the insulating seat (103) has an end surface (111) and is provided with a first suction channel (112) penetrating the end surface (111); the first electrode wire (200) is provided on the end surface (111), and the first electrode wire (200) is provided with a sinking section (210), and the sinking section (210) extends into the first suction channel (112); the second electrode wire (3 00) is arranged on the end surface (111), and the second electrode wire (300) is spaced apart from the first electrode wire (200); it also includes an energy transmission connector (1242) and an energy transmission line (1241) connected to each other, and the first electrode wire and the second electrode wire are connected to the energy transmission line (1241) via the energy transmission connector (1242); the ratio of the depth of the sinking section (210) sunk into the first suction channel (112) to the width of the first suction channel (112) is 0.7 to 1.

2.

2. The plasma electrode cutter head according to claim 1, characterized in that: The second electrode wire (300) is provided with a raised section (310); and a projection of the raised section (310) on the end surface (111) falls within a range defined by the first suction channel (112).

3. The plasma electrode cutter head according to claim 1 or 2, characterized in that: The sinking section (210) comprises a first sinking arm (211) and a second sinking arm (212) connected at an angle.

4. The plasma electrode cutter head according to claim 3, characterized in that: The first sinking arm (211) and the second sinking arm (212) form a sinking section (210), and the ratio of the height to the opening width of the sinking section (210) is 0.6 to 2.

2.

5. The plasma electrode cutter head according to claim 2, characterized in that: The ratio of the height of the protruding section (310) protruding from the end surface (111) to the projected width of the first suction channel (112) is 0.5 to 0.

83.

6. The plasma electrode cutter head according to claim 2 or 5, characterized in that: The raised section (310) comprises a first raised arm (311) and a second raised arm (312) connected at an angle.

7. The plasma electrode cutter head according to claim 6, characterized in that: The first protruding arm (311) and the second protruding arm (312) form a protruding segment (310), and the ratio of the height to the opening width of the protruding segment (310) is 0.3 to 2.

1.

8. A plasma surgical electrode, characterized in that: include: A knife rod (100), wherein the knife rod (100) is provided with a first housing (1201); Any one of the plasma electrode cutter heads (110) described in claims 1 to 7 is arranged at one end of the cutter rod (100), and the first suction channel (112) in the plasma electrode cutter head (110) extends into the first shell (1201); and a first connecting portion (120) is arranged at the other end of the cutter rod (100) away from the plasma electrode cutter head (110); the first connecting portion (120) is provided with a mechanical connection unit (121), an energy connection unit (124) and a pipeline connection unit (122); the mechanical connection unit (121) is located on the first shell (1201) and is used for detachably connecting an external operating handle assembly; the energy connection unit (124) is connected to the plasma electrode cutter head (110) and is used to transmit energy to the plasma electrode cutter head (110); the pipeline connection unit (122) is communicated with the first suction channel (112) and is used to transmit fluid in the first suction channel (112).

9. A plasma surgical device, characterized in that: The invention comprises the plasma surgical electrode according to claim 8; and an operating handle assembly (400); the operating handle assembly (400) comprises a handle body (401), and the handle body (401) is provided with a suction unit (420) and a cable unit (430); the operating handle assembly (400) is further provided with a second connecting portion (410), the second connecting portion (410) is located at the front end of the handle body (401), and the second connecting portion (410) and the first connecting portion (120) are detachably connected via a mechanical connecting unit (121); the suction unit (420) is used to connect to the pipeline connecting unit (122) and suck the fluid; the cable unit (430) is used to transmit energy to the energy connecting unit (124).

10. The plasma surgical device according to claim 9, characterized in that: The second connection portion (410) is provided with a radial groove (411), and the mechanical connection unit (121) comprises one or more hooks (1211), and the hooks (1211) are detachably connected to the radial groove (411).

11. The plasma surgical device according to claim 9, characterized in that: The second connecting portion (410) is provided with a guide groove (412); the mechanical connecting unit (121) further comprises a guide protrusion (1212) matching the second connecting portion (410).

12. The plasma surgical device according to claim 9, 10 or 11, characterized in that: A second suction channel (421) is provided in the operating handle assembly (400), one end of the second suction channel (421) is connected to the suction unit (420), and the other end of the second suction channel (421) is provided with a second cone (4211); the pipeline connection unit (122) is provided with a first cone (1221) that matches the second cone (4211).

13. The plasma surgical device according to claim 12, characterized in that: The second connection portion (410) is provided with an energy output unit (431), and the energy output unit (431) is matched and connected with the energy connection unit (124); The second connection portion (410) is provided with a signal acquisition unit (432), and the signal acquisition unit (432) is matched and connected with the signal transmission unit (123); The second suction channel (421) is located in the middle of the second connecting portion (410); the energy output unit (431) and / or the signal acquisition unit (432) are arranged circumferentially along the second suction channel (421).

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