Plasma operation electrode tool bit

Abstract

The utility model relates to the technical field of medical instruments, in particular to a plasma operation electrode tool bit which aims at solving the problem that a plasma operation electrode suction channel in the prior art is prone to being blocked and comprises an insulating base, and the insulating base is provided with an end face and a suction channel penetrating through the end face. The first electrode wires are provided with sinking sections, and the sinking sections are located in the suction channel. According to the scheme, the first electrode wire sinking section is creatively arranged at the inlet, and after the first electrode wire is powered on, tissue at the inlet of the suction channel is cut again under the action of an electric field. Compared with the traditional technical thought that the shielding area of the suction channel is reduced as much as possible, the scheme creatively performs secondary cutting on the blocked tissue by means of the electric field effect, blockage at the inlet of the suction channel is effectively reduced, and normal operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a plasma surgical electrode head. Background Art

[0002] When high-frequency current passes through the electrodes, local high Joule heat is generated between the electrodes, causing the electrolyte solution (such as saline) on the electrode surface to vaporize and decompose, forming a plasma vapor layer containing free electrons, ions, neutral chemical groups and other neutral substances. The charged particles in the plasma are accelerated under the action of the electric field, bombarding the tissue surface, breaking the molecular bonds of tissue cells, and directly vaporizing or carbonizing biological macromolecules such as proteins, thereby achieving tissue cutting, ablation and hemostasis.

[0003] In clinical practice, plasma surgical electrode heads are usually used to achieve functions such as cutting, ablation and hemostasis of tissues under low temperature (40℃~70℃), especially in ENT surgery. In actual application, in order to facilitate operation, the plasma surgical electrode head is designed to be very compact, and the inner diameter of the suction channel is small; during the operation, due to the blood and residual tissue produced in the affected area, the suction channel of the plasma surgical electrode head is prone to blockage or jamming. Utility Model Content

[0004] The utility model aims to at least solve the problem in the prior art that a plasma surgical electrode suction channel is prone to blockage, and further provides a plasma surgical electrode cutter head.

[0005] In order to achieve the above-mentioned purpose of the utility model, the following technical solution is provided: a plasma surgical electrode head, comprising an insulating seat and at least one first electrode wire, wherein the insulating seat has an end face and is provided with a suction channel passing through the end face; the first electrode wire is arranged on the end face, and the first electrode wire is provided with a sinking section, and the sinking section extends into the suction channel.

[0006] Furthermore, the ratio of the depth of the submerged section in the suction channel to the width of the suction channel is 0.7 to 1.2.

[0007] Furthermore, the first electrode wire includes a first connecting segment and a second connecting segment, 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 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 suction channel; a sinking segment is provided between the first connecting segment and the second connecting segment.

[0008] Furthermore, the sinking section comprises a first sinking arm and a second sinking arm connected at an angle.

[0009] Furthermore, the first sinking arm and the second sinking arm form a sinking section, and a ratio of a height to an opening width of the sinking section is 0.6 to 2.2.

[0010] Furthermore, it also includes more than one second electrode wire, and the second electrode wire is provided with a convex section; and the projection of the convex section on the end surface falls within the range defined by the suction channel.

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

[0012] Furthermore, the second electrode wire includes a third connecting segment and a fourth connecting segment, 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 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 suction channel; a raised segment is provided between the third connecting segment and the fourth connecting segment.

[0013] Furthermore, the protruding section includes a first protruding arm and a second protruding 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 utility model is used, the insulating seat serves as a supporting element, and the first electrode wire is installed on the insulating seat, wherein a suction channel is provided in the middle of the insulating seat, and a sinking section is provided on the first electrode wire to sink into the suction channel. Congestion in the suction channel mainly occurs when the entrance of the suction channel is blocked. The present solution creatively sets a sinking section of the first electrode wire at the entrance, and when the first electrode wire is energized, the electric field is used to crush and cut the tissue at the entrance of the suction channel again. Compared with the traditional technical idea of ​​minimizing the blocking area of ​​the suction channel as much as possible, the present solution uses the electric field to perform a secondary cutting of the blocked tissue, effectively reducing the blockage at the entrance of the suction channel and ensuring the normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the plasma surgical electrode blade of the utility model from the first viewing angle.

[0017] Figure 2 yes Figure 1 Enlarged schematic diagram of local area A.

[0018] Figure 3It is a partial schematic diagram of one embodiment of the plasma surgical electrode blade head of the utility model.

[0019] Figure 4 It is a partial schematic diagram of one embodiment of the first electrode wire of the utility model.

[0020] Figure 5 It is a partial schematic diagram of another embodiment of the first electrode wire of the utility model.

[0021] Figure 6 It is a partial schematic diagram of another embodiment of the first electrode wire of the utility model.

[0022] Figure 7 It is a partial schematic diagram of another embodiment of the first electrode wire of the utility model.

[0023] Figure 8 It is a partial schematic diagram of the second electrode wire of the utility model.

[0024] Reference numerals:

[0025] Plasma surgical electrode knife rod 100, insulating seat 110, end face 111, suction channel 112, first electrode wire 200, first connecting section 201, second connecting section 202, U-shaped sinking structure 2101, Q-shaped sinking structure 2102, Y-shaped sinking structure 2103, triangular sinking structure 2104, 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, third electrode wire 330. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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 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. Similarly, the description of the terms "first" or "second" and their variations is only for the purpose of distinguishing the components and does not limit the scope of the present application.

[0028] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" 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 connection 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.

[0029] Reference Manual Attached Figure 1 , Attachment Figure 2 A plasma surgical electrode blade includes an insulating seat 110 and at least one first electrode wire 200, wherein the insulating seat 110 has an end surface 111 and is provided with a suction channel 112 penetrating the end surface 111; the first electrode wire 200 is arranged on the end surface 111, and the first electrode wire 200 is provided with a sinking section, and the sinking section extends into the suction channel 112.

[0030] In the present invention, a plasma surgical electrode blade 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 suck the cut tissue and related mixture from the suction channel 112; the operating component is used to operate the plasma surgical electrode blade, and the plasma surgical electrode blade head refers to the part of the plasma surgical electrode blade rod 100 close to the patient's tissue side; the infusion component is used to transport physiological saline or other mediums that assist electrode cutting; the energy component is used to provide energy to the blade head; and the control component is used for auxiliary control during the operation of the plasma surgical electrode. Since the above components can all be selected from existing technical components, they will not be repeated here.

[0031] In one embodiment of the utility model, the insulating seat 110 serves as a supporting element, and the first electrode wire 200 is installed on the insulating seat 110 and connected to the energy component. A suction channel 112 is provided in the middle of the insulating seat 110, and a sinking section is provided on the first electrode wire 200 to sink into the suction channel 112. The congestion of the existing suction channel 112 mainly occurs at the entrance of the suction channel 112. The present solution creatively provides a sinking section of the first electrode wire 200 at the entrance. When the first electrode wire 200 is energized, the electric field is used to cut the tissue at the entrance of the suction channel 112 again. Compared with the technical idea of ​​the prior art to reduce the blocking area of ​​the suction channel 112 as much as possible, the present solution creatively uses the electric field to perform a second cutting of the blocked tissue, effectively reducing the blockage at the entrance of the suction channel 112 and ensuring the normal operation.

[0032] In another embodiment, as shown in the attached Figure 3 As shown, a third electrode wire 330 with a top parallel to the end face 111 is also provided on the end face 111. The combination of the first electrode wire 200 and the third electrode wire 330 not only increases the electric field strength during use and improves the cutting efficiency, but also increases the stability of the electrode wire on the end face 111, further ensuring the safety of the operation.

[0033] In another embodiment, refer to the attached specification Figure 2 , and attached Figure 4 To Attachment Figure 7, the ratio of the depth of the submerged section sunk into the suction channel 112 to the width of the suction channel 112 is 0.7 to 1.2. The depth of the submerged section sunk into the suction channel 112 of the utility model refers to the maximum distance that the submerged section extends into the suction channel 112 based on the end face 111 of the suction channel 112; the width of the suction channel 112 refers to the opening distance of the suction channel 112 at the projection of the submerged section on the end face 111. If the projection of the submerged section on the end face 111 is not a straight line, then a straight line is drawn from the two end points of the projection of the submerged section on the end face 111, and the opening distance of the suction channel 112 determined by the intersection with the suction channel 112 is the width of the suction channel 112. Among them, when the ratio of the depth of the submerged section sunk into the suction channel 112 to the width of the suction channel 112 is 0.7 to 1.2, the blockage at the entrance of the suction channel 112 can be more effectively reduced. The specific ratio is not limited in this embodiment, and in practical applications, 0.7, 0.8, 0.9, 1.0, 1.1 or 1.2 can be selected. In the surgical operation, the residual tissue forms a blockage at the entrance of the suction channel 112, mainly because the residual tissue gathers to a certain depth in the suction channel 112 to form a blockage. If the ratio of the depth of the sinking section sinking into the suction channel 112 to the width of the suction channel 112 is lower than 0.7, it means that the depth of the sinking section sinking into the suction channel 112 is relatively shallow, and the electric field effect of the sinking section is limited to the secondary cutting of the tissue at the entrance of the suction channel 112, which may still cause blockage; if the ratio of the depth of the sinking section sinking into the suction channel 112 to the width of the suction channel 112 is higher than 1.2, it means that the depth of the sinking section sinking into the suction channel 112 is relatively deep, which will inevitably reduce the space at the entrance of the suction channel 112, which will cause the suction channel 112 to be insufficient and cause blockage.

[0034] In another embodiment, referring to the attached Figure 2 , and attached Figure 4 To Attachment Figure 7The first electrode wire 200 includes a first connecting segment 201 and a second connecting segment 202, 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 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 suction channel 112; a sinking segment 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 from the inner side of the end face 111 to the outer side away from the end face 111 along the axial direction of the suction channel 112. A first portion parallel to the end face 111 is formed by a first bend, and then a sinking section is formed by a second bend. Then, a second portion parallel to the end face 111 is formed by a third bend. Finally, a portion parallel to the axial direction of the 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 shielding area of ​​the first electrode wire 200 on the suction channel 112 and reduce blockage. Refer to the attached Figure 4 To Attachment Figure 7 The sinking section can be selected in different shapes, which can further reduce tissue blockage at the entrance of the suction channel 112. Different shapes of sinking section designs each have their own unique advantages, and the most suitable structure can be selected according to specific surgical requirements, tissue types and doctor preferences to achieve the best surgical effect and patient recovery.

[0035] In another embodiment, as shown in the attached Figure 2 And attached Figure 4 As shown, the cross-section of the sinking section is a U-shaped sinking structure 2101, the bottom of which is located in the suction channel 112, and the opening end protrudes from the end surface 111 and is located outside the end surface 111; the U-shaped sinking structure 2101 is relatively easy to realize in the processing and manufacturing process due to its simple geometric shape, thereby reducing production costs and time; in addition, the opening design of the U-shaped sinking structure 2101 helps to guide tissue fragments and fluids to enter the suction channel 112 more smoothly, thereby reducing the risk of blockage due to the complex shape.

[0036] In another embodiment, as shown in the attached Figure 2 And attached Figure 5As shown, the cross-section of the sinking section is a Q-shaped sinking structure 2102, the bottom of which is located in the suction channel 112, and the open end protrudes from the end surface 111 and is located outside the end surface 111; by being set as a Q-shaped sinking structure 2102, it can provide better structural support, reduce vibration and deviation, and make the surgical process more stable; at the same time, the airbag-type design increases the surface area of ​​the electrode contact, which helps to distribute the electric field energy more evenly and further improve efficiency.

[0037] In another embodiment, as shown in the attached Figure 2 And attached Figure 6 As shown, the cross-section of the sinking section is a Y-shaped sinking structure 2103, the bottom of which is located in the suction channel 112, and the opening end protrudes from the end surface 111 and is located outside the end surface 111; by being set as a Y-shaped sinking structure 2103, its 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.

[0038] In another embodiment, as shown in the attached Figure 2 And attached Figure 7 As shown, the cross section of the sinking section is a triangular sinking structure 2104, including a first sinking arm 211 and a second sinking arm 212 connected at an angle. Its tip is located in the suction channel 112, and the open end protrudes from the end face 111 and is located outside the end face 111. The inverted triangular 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 suction channel 112 more significant, effectively reducing tissue residue and blockage; at the same time, the triangular sinking structure 2104 promotes the flow of the mixture, reduces eddy currents and retention, and keeps the suction channel 112 unobstructed; therefore, in practical applications, the triangular sinking structure 2104 formed by the first sinking arm 211 and the second sinking arm 212 has the best effect.

[0039] In another embodiment, referring to the attached Figure 2 And attached Figure 7, the first sinking arm 211 and the second sinking arm 212 form a sinking section, the sinking section is a triangular sinking structure 2104, and the ratio of the height of the sinking section to the opening width is 0.6 to 2.2. The utility model forms a reference line 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 endpoints of the first sinking arm 211 or the second sinking arm 212 far from the outside of the end face 111 and the reference line is the height of the sinking section; 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 reference line after being projected on the end face 111. Among them, the ratio of the height of the sinking section 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 suction channel 112. The specific ratio is not limited in this embodiment, and in practical applications, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 or 2.2 can be selected. In the surgical operation, if the ratio of the height and opening width of the sinking section 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 in the suction channel 112 is relatively shallow, and the electric field effect of the sinking section has limited secondary cutting of the tissue at the entrance of the suction channel 112, which may still cause blockage; if the ratio of the depth of the sinking section in the suction channel 112 to the width of the suction channel 112 is higher than 2.2, it means that the sinking depth of the sinking section in the suction channel 112 is relatively deep, which will inevitably reduce the space at the entrance of the suction channel 112, which will cause the suction channel 112 to be insufficient and cause blockage.

[0040] In another embodiment, referring to the attached Figure 1 , Attachment Figure 2 And attached Figure 8 , and further includes more than one second electrode wire 300, 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 suction channel 112. By providing the raised section 310, it means that the second electrode wire 300 forms a raised shape outside the end face 111 of the 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, the electrode knife coagulation depth can be increased and the coagulation effect can be improved. 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.

[0041] In another embodiment, referring to the attached Figure 2 And attached Figure 8, the ratio of the height of the protruding section 310 protruding from the end face 111 to the projected width of the suction channel 112 is 0.5 to 0.83. The height of the protruding section 310 of the utility model 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 based on the end face 111; the projected width of the suction channel 112 in this embodiment refers to the opening distance of the 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 suction channel 112 determined by the intersection of a straight line made by the two end points of the projection of the protruding section 310 on the end face 111 and the suction channel 112 is the projected width of the suction channel 112. Among them, the ratio of the height of the protruding section 310 protruding from the end face 111 to the projected width of the suction channel 112 is 0.5 to 0.83, which can more effectively reduce the blockage at the entrance of the suction channel 112. The specific ratio is not limited in this embodiment, and in practical 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 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 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 improved to a limited extent, 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 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 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.

[0042] In another embodiment, referring to the attached Figure 2 And attached Figure 8The second electrode wire 300 includes a third connecting segment 301 and a fourth connecting segment 302, 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 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 suction channel 112; the other side of the fourth connecting segment 302 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 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 from the inner side of the end face 111 to the outer side away from the end face 111 along the axial direction of the suction channel 112. The first part parallel to the end face 111 is formed by the first bending method, and then the convex section 310 is formed by the second bending method. Then, the second part parallel to the end face 111 is formed by the third bending method, and finally, the part parallel to the axial direction of the suction channel 112 is formed by the fourth bending method and extends 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, and the overall structure is compact, and it is stable and reliable after installation; at the same time, the use of this structure can reduce the shielding area of ​​the second electrode wire 300 on the suction channel 112 and reduce the blockage phenomenon.

[0043] It should be noted that if the shape fluctuation of the protrusion 310 is large, 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 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 And attached Figure 8 , the raised section 310 includes a first raised arm 311 and a second raised arm 312 connected at an angle. Specifically, the cross-section of the raised section 310 is a triangular structure, the tip of which is far 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 further 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 section 310 structures, including a trapezoidal structure, an arc shape, or a wavy structure in cross-section. 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 the cutting efficiency, but also in terms of achieving a better balance between thermal damage and coagulation effects.

[0044] In another embodiment, referring to the attached Figure 2 And attached Figure 8, 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 utility model forms a reference line with the end points of the first protruding arm 311 and the second protruding arm 312 close to the end face 111, and the maximum distance between the other end point 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 end points of the first protruding arm 311 and the second protruding arm 312 on the reference line after being projected on the end face 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 the thermal damage and coagulation effect. The specific ratio is not limited in this embodiment, and 0.3, 0.6, 0.9, 1.2, 1.5, 1.8 or 2.1 can be selected in practical applications. During the surgical operation, the ratio of the height and the 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 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 only slightly improved, which may still cause blockage; the ratio of the height and the 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 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.

[0045] In the description of this specification, the description with reference to the terms "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 the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A plasma surgical electrode head, characterized in that: The invention comprises an insulating seat (110) and at least one first electrode wire (200), wherein the insulating seat (110) has an end surface (111) and is provided with a suction channel (112) penetrating the end surface (111); the first electrode wire (200) is arranged on the end surface (111), and the first electrode wire (200) is provided with a sinking section, and the sinking section extends into the suction channel (112).

2. The plasma surgical electrode head according to claim 1, characterized in that: The ratio of the depth of the submerged section submerged in the suction channel (112) to the width of the suction channel (112) is 0.7 to 1.

2.

3. The plasma surgical electrode head according to claim 1 or 2, characterized in that: The first electrode wire (200) comprises a first connecting section (201) and a second connecting section (202); one side of the first connecting section (201) and one side of the second connecting section (202) are both inserted into the end surface (111); the other side of the first connecting section (201) extends outside the end surface (111), and the projection of its end on the end surface (111) falls within the range defined by the suction channel (112); the other side of the second connecting section (202) extends outside the end surface (111), and the projection of its end on the end surface (111) falls within the range defined by the suction channel (112); and a sinking section is provided between the first connecting section (201) and the second connecting section (202).

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

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

2.

6. The plasma surgical electrode head according to claim 4 or 5, characterized in that: It also includes more than one second electrode wire (300), wherein the second electrode wire (300) is provided with a convex section (310); and the projection of the convex section (310) on the end surface (111) falls within the range defined by the suction channel (112).

7. The plasma surgical electrode head according to claim 6, 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 suction channel (112) is 0.5 to 0.

83.

8. The plasma surgical electrode head according to claim 7, characterized in that: The second electrode wire (300) comprises a third connecting segment (301) and a fourth connecting segment (302); 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 outside the end surface (111), and the projection of its end on the end surface (111) falls within the range defined by the suction channel (112); the other side of the fourth connecting segment (302) extends outside the end surface (111), and the projection of its end on the end surface (111) falls within the range defined by the suction channel (112); and a protruding segment (310) is provided between the third connecting segment (301) and the fourth connecting segment (302).

9. The plasma surgical electrode head according to claim 7 or 8, characterized in that: The protruding section (310) comprises a first protruding arm (311) and a second protruding arm (312) connected at an angle.

10. The plasma surgical electrode head according to claim 9, 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.

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