A safe plasma surgical electrode

Abstract

The present invention belongs to the technical field of medical devices, and discloses a safe plasma surgical electrode, comprising a working electrode and a return electrode powered by a cable, the working electrode and the return electrode being isolated by an insulating seat, the working electrode comprising a sheet-shaped end face portion and a bent portion; the end face portion is provided as an excitation sheet by means of an opening; the excitation sheet comprises an outer excitation sheet, the outer excitation sheet is provided as a structure with a gradually narrowing width from the bottom to the side of the end face portion, and the width of the bent portion is greater than the width of the bottom of the excitation sheet. The present invention solves the technical problem that the existing sheet-shaped electrode may be disconnected from the middle or even disconnected as a whole and fall into the human body, thereby affecting the surgical efficiency and endangering the human body, and has the characteristics of being safer to use and having a longer life.

Description

Technical Field

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

[0002] The radio frequency plasma surgery system is a new generation of low-temperature plasma surgery system, which can be used for soft tissue dissection, resection, ablation, hemostasis and drying in surgical operations. It also has various electrodes of different shapes, outer diameters, curvatures and lengths suitable for different professional departments. The existing plasma scalpel surgery has a very high risk, and the sheet electrodes are easily broken and fall into the patient's body. The main disadvantage of the structural design of the existing sheet electrodes is that the electrodes will break from the middle of the sheet electrodes or even break as a whole, which is not easy to take out of the human body and endanger the human body. The service life cannot meet the needs of some complex operations that require a long time. Secondly, some surgical channels are very small, so there is a clinical need for a plasma scalpel that is safer, has a longer service life, and is more compact and compact. Summary of the invention

[0003] The purpose of the present invention is to provide a safe plasma surgical electrode to solve the technical problem that the existing sheet electrodes may break in the middle or even break as a whole and fall into the human body, thereby affecting the surgical efficiency and endangering the human body. The invention has the characteristics of being safer to use and having a longer life.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A safe plasma surgical electrode comprises a working electrode and a return electrode powered by a cable, the working electrode and the return electrode being isolated by an insulating seat, the working electrode comprising a sheet-shaped end face portion and a bent portion; the end face portion being arranged as an excitation sheet by means of an opening; the excitation sheet comprising an outer excitation sheet, the outer excitation sheet being arranged as a structure with a gradually narrowing width from the bottom of the end face portion to the side, and the width of the bent portion being greater than the width of the bottom of the excitation sheet.

[0006] Furthermore, the excitation plate includes an outer excitation plate, and the outer contour width of the outer excitation plate from the top of the end surface portion is smaller than the outer contour width of the bottom and side portions of the end surface portion.

[0007] Preferably, the outer excitation plate forms an end face outer contour of any one of a "C" shape after rotating 90° clockwise, a "D" shape after rotating 90° counterclockwise, a circle or an ellipse.

[0008] Furthermore, the excitation plate also includes an inner excitation plate (i.e., an excitation plate arranged within the outline of the outer excitation plate by means of an opening), and the inner excitation plate is arranged to have a structure with a gradually narrowing width from the bottom to the top of the end surface (i.e., the part away from the bending part).

[0009] Furthermore, the inner excitation piece is in the shape of a letter "I", with its upper and lower ends connected between the bottom and the top of the outer excitation piece, and a notch is provided on the outer side of the connection between the upper end of the inner excitation piece and the outer excitation piece.

[0010] Preferably, the notch is a "V"-shaped notch.

[0011] Furthermore, the opening edge of the notch is provided with rounded corners. Preferably, all positions thereof can be provided with rounded corners, that is, the bottom of the "V"-shaped notch can also be provided with rounded corners.

[0012] Furthermore, the inner side of the hole is provided with a rounded corner.

[0013] Furthermore, the distance between the top of the end surface and the loop pole is smaller than the distance between the bottom of the end surface and the loop pole.

[0014] Preferably, the end face portion forms an angle of 3° to 10° with the loop pole.

[0015] Furthermore, the width of the excitation plate on the side of the end face portion is greater than the width of the excitation plate on the top of the end face portion.

[0016] Furthermore, a water outlet hole connected to the water outlet channel is provided on the return pole.

[0017] Furthermore, a water absorption hole connected to the water absorption channel is provided in the insulating seat.

[0018] Furthermore, the loop is extremely curved.

[0019] In summary, compared with the prior art, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The main improvement of the present invention is that the structure of the working electrode is designed to be a sheet-like end face and a bent portion, and the end face is set as an excitation sheet (i.e., the end face left after the hole is opened) by means of an opening, and the outer excitation sheet is further set to a structure with a gradually narrowing width from the bottom of the end face to the side, and the width of the bent portion is greater than the width of the bottom of the excitation sheet (i.e., the width of the bent portion D3> the bottom of the excitation sheet D2> the side of the excitation sheet D1). Compared with the prior art, where the sheet electrode may be disconnected in the middle or even disconnected as a whole, this structural design makes it easier for the top of the outer excitation sheet to melt using the energy of plasma, and the first melted part becomes the top of the outer excitation sheet, rather than disconnecting from the middle or bottom and falling into the human body, thereby avoiding large pieces of working electrode material from melting and falling into the human body during surgery, making it difficult to remove. In addition, after repeated tests, it was found that during the melting process, the working electrode can still generate plasma and can work continuously. Generally, after the operation is completed, the melted part is at most the top of the excitation sheet and a small part nearby, which does not affect the operation at all. At the same time, even if it is used for a longer period of time, it will not fall from the middle or even the whole electrode, which is safer, more effective and longer in life. Therefore, the present invention solves the technical problem that the existing sheet electrodes will break from the middle or even the whole electrode and fall into the human body, thereby affecting the efficiency of the operation and endangering the human body, and has the characteristics of safer use and longer life. Regarding creativity: Since no prior art discloses the above-mentioned special structural design, nor has the same structural design been used to solve the same technical problem and achieve the above-mentioned technical effect, the prior art does not provide technical inspiration for those skilled in the art to design the above-mentioned special structure. Therefore, compared with the prior art, the present application is non-obvious and meets the prescribed creativity requirements.

[0021] 2. Furthermore, the present invention configures the outer excitation sheet to have an outer contour width smaller than the outer contour width of the bottom and side of the end face. This structure can greatly reduce the volume of the top of the excitation sheet, making it easier to melt, rather than falling into the human body after melting as in the prior art, thus further reducing the harm caused by the operation to the human body.

[0022] 3. Furthermore, the present invention sets the external excitation piece to be any one of the end face outer contours, such as a "C" shape after rotating 90° clockwise, a "D" shape after rotating 90° counterclockwise, a circle or an ellipse. This structure has the characteristics of axisymmetry (Note: the bottom in the text refers to the part of the end face used to connect the bending part; the side in the text refers to the part on both sides of the symmetry axis except the part of the end face used to connect the bending part, or the corresponding part in the asymmetric case.), and at the same time has the characteristic of a smaller volume at the top of the excitation piece, making it easier to melt, rather than falling into the human body after melting as in the prior art, thereby further reducing the harm caused by the operation to the human body.

[0023] 4. Furthermore, the present invention also includes an inner excitation sheet, and the inner excitation sheet is configured to have a structure with a width gradually narrowing from the bottom to the top of the end surface. This structure can also generate plasma in the sheet-shaped end surface, which is more conducive to cutting.

[0024] 5. Furthermore, the present invention arranges the inner excitation sheet in an "I" shape, with its upper and lower ends connected between the bottom and top of the outer excitation sheet, and a notch is provided on the outer side of the connection between the upper end of the inner excitation sheet and the outer excitation sheet. This structure reduces the width of the top of the outer excitation sheet, making it easier to melt compared to the above scheme, and prevents the sheet electrode from breaking from the middle or even breaking as a whole and falling into the human body. Generally, after the operation is completed, the melted part is at most only the top of the excitation sheet and a small part nearby, which does not affect the operation at all, further reducing the harm caused by the operation to the human body, and making it safer; even if it is used for a longer period of time, it will not fall from the middle or even as a whole, making it safer, more effective, and longer-lasting. At the same time, this structure generates stronger plasma at the top of the outer excitation sheet, making the cutting sharper and more effective.

[0025] 6. Furthermore, the present invention sets the notch as a "V"-shaped notch, which can not only ensure the above-mentioned safety but also improve the aesthetics.

[0026] 7. Furthermore, the present invention provides a rounded corner on the opening edge of the notch, which can generate a relatively more uniform plasma and achieve a better cutting effect.

[0027] 8. Further, as above, the present invention provides a rounded corner on the inner side of the hole, which can generate a relatively more uniform plasma and achieve a better cutting effect.

[0028] 9. In a further solution of the present invention, the distance between the top of the end face portion and the loop electrode is smaller than the distance between the bottom of the end face portion and the loop electrode, so that the top of the end face portion can generate plasma earlier, which is also conducive to generating stronger plasma at the top of the end face portion, making the top of the end face portion easier to melt, and preventing the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, further reducing the harm caused by the operation to the human body, and having higher safety.

[0029] 10. The present invention sets the end face portion and the loop electrode to an angle of 3° to 10°, so that the top of the end face portion can generate plasma earlier, which is also conducive to generating stronger plasma at the top of the end face portion, making the top of the end face portion easier to melt, and preventing the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, which is a further guarantee for the better cutting effect and higher safety of the present invention.

[0030] 11. Furthermore, the present invention sets the width of the excitation plate on the side of the end face portion to be larger than the width of the excitation plate on the top of the end face portion, which is more conducive to the melting of the top of the end face portion and can prevent the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, further reducing the harm caused by the operation to the human body and improving safety.

[0031] 12. Furthermore, the present invention provides a water outlet hole on the return electrode connected to the water outlet channel, which can conveniently input physiological saline directly through the surgical electrode, cooperate with the electrode to generate plasma at the working electrode, and perform surgery without the need to use other instruments to separately input physiological saline.

[0032] 13. Furthermore, the present invention is provided with a water absorption hole connected to the water absorption channel in the insulating seat, and its function is to cooperate with the suction device to conveniently absorb waste tissue, melted excitation sheets, physiological saline and other wastes directly through the surgical electrode without the need to use other instruments to separately establish a suction channel. More importantly, it further reduces the safety hazard to the human body caused by the melted excitation sheets and other wastes remaining in the human body.

[0033] 14. Furthermore, the present invention sets the loop pole to be curved, which is more conducive to surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the external structure of the electrode head part of the present invention.

[0035] Figure 2 It is a cross-sectional view of the electrode tip portion of the present invention.

[0036] Figure 3 It is a partial enlarged view of the electrode head part of the present invention.

[0037] Figure 4 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0038] All features disclosed in this specification, except mutually exclusive features and / or steps, can be combined in any manner.

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] Example 1

[0041] like Figures 1 to 4As shown, a safe plasma surgical electrode disclosed in the present invention comprises a handle 4, a power supply cable 6 is provided at the proximal end of the handle 4, and an insulating seat 3 is connected to the distal end of the handle 4 through a knife rod 5 as a return pole 2, and a working pole 1 isolated from the return pole 2 is provided on the insulating seat 3; the working pole 1, the insulating seat 3 and the return pole 2 constitute an electrode head, and the working pole 1 and the return pole 2 are electrically connected to the cable 6 respectively, and the working pole 1 comprises a sheet-shaped end face portion 11 and a bending portion 12, and the end face portion 11 is arranged on the end face of the insulating seat 3; the end face portion 11 is arranged as an excitation plate 111 (i.e., an excitation component of plasma) by means of an opening 1113; the excitation plate 111 comprises an outer excitation plate 1111, and the outer excitation plate 1111 is arranged as a structure with a gradually narrowing width from the bottom of the end face portion 11 (i.e., the portion close to the bending portion 12) to the side direction, and the width of the bending portion 12 is greater than the width of the bottom of the excitation plate 111 (i.e., the width D3 of the bending portion> the bottom D2 of the excitation plate> the side D1 of the excitation plate).

[0042] Preferably, the width D3 of the bending portion is greater than the bottom D2 of the excitation plate and the side D1 of the excitation plate, wherein 0.5mm<the width D3 of the bending portion<1.2mm; this size chain greatly improves the service life of the surgical electrode and meets the current clinical needs for complex and long-term surgery. Currently, the service life of similar surgical electrodes is about 20 to 30 minutes, and the service life of the present invention can reach 40 to 50 minutes.

[0043] Note: The width referred to in the text refers to the thickness of each component of the excitation plate 111, rather than the overall external contour of the external excitation plate 1111. The overall external contour is pointed out separately.

[0044] Preferably, the outside of the knife rod 5 is coated with an insulating layer 51 (the loop pole 2, i.e., the exposed part of the knife rod 5), and is configured as a bending structure. The bending structure of the knife rod 5 includes two parts, one is the first bending part close to the handle 4, and the other is the exposed loop pole 2 part of the knife rod 5 (i.e., the second bending structure). This structure is to adapt to surgical operations and make surgical operations more convenient. The outer diameter D4 of the knife rod 5 described in the present invention can be less than 4 mm (in order to adapt to the surgical requirements of different departments, its size may change, but generally the outer diameter of the insulating seat 3 and the outer contour width of the working pole 1 are smaller than the outer diameter of the knife rod 5). Without sacrificing the various technical indicators of the surgical electrode, it has a more compact and compact structure, can be used for some operations with very small surgical channels, and provides the surgeon with a larger operating space and surgical field of view.

[0045] Preferably, the insulating seat 3 is provided with a mounting hole, which can be set on the end surface of the insulating seat 3, and the bent portion 12 of the working pole 1 extends into the mounting hole (and can extend into the water absorption channel 31), and is electrically connected to the cable 6 through a wire, and the electrical connection part between the wire and the cable 6 is insulated by wrapping a heat shrink tube and applying glue. The return pole 2 is also electrically connected to the cable 6 and is insulated by wrapping a heat shrink tube and applying glue.

[0046] The excitation plate 111 includes an outer excitation plate 1111 , and the outer contour width of the outer excitation plate 1111 from the top of the end surface portion 11 is smaller than the outer contour width of the bottom and side of the end surface portion 11 .

[0047] Preferably, the outer excitation plate 1111 forms a "C" shape after rotating 90° clockwise, and a "D" shape after rotating 90° counterclockwise (similar to the "C" shape after rotating 90° clockwise).

[0048] Preferably, the inner side of the hole 1113 is provided with a rounded corner 1115, which can generate relatively more uniform plasma and achieve better cutting effect.

[0049] The loop pole 2 is made of a metal tube, and the insulating seat 3 can be fixed to the tube mouth of the loop pole 2 by gluing or other methods.

[0050] When in use, the present invention is connected to a plasma generator through a cable 6, and operations such as switching and gear selection are performed on the plasma generator and other equipment. Physiological saline flows out from the water outlet 22, conducts the loop electrode 2 and the working electrode 1 and forms an ion state, and forms a highly vaporized plasma thin layer at the end of the working electrode 1. The plasma thin layer has enough energy to crush the molecular chains of the human wound tissue in contact with the working electrode 1, and the temperature generated is between 40°C and 70°C, which is convenient for safe and convenient cutting of the diseased tissue, with little damage to the surrounding normal tissue. The plasma thin layer has a very high oxidation effect and can kill bacteria on the surface of the wound.

[0051] The present invention adopts the above structure to make it easier for the top of the external excitation sheet to melt using the energy of plasma, and the first part to melt becomes the top of the external excitation sheet, and it will not break off from the middle or bottom and fall into the human body, thereby avoiding falling into the human body after melting during surgery. In addition, after repeated tests, the working electrode will still generate plasma during the melting process and can continue to work. Generally, after the operation is completed, the melted part is at most only the top of the excitation sheet and a small part nearby, which does not affect the operation at all. Therefore, the present invention solves the technical problem that the existing sheet electrodes will break off from the middle or even break off as a whole and fall into the human body, thereby affecting the efficiency of the operation and endangering the human body, and has the characteristics of being safer to use and having a longer life.

[0052] Furthermore, the loop electrode 2 is provided with a water outlet hole 22 connected to the water outlet channel 21, and the water outlet channel 21 is established by the infusion tube 23. The insulating seat 3 is provided with a water absorption hole 32 connected to the water absorption channel 31, and the water absorption channel 31 is established by the suction tube 33. Its function is to conveniently input physiological saline directly through the surgical electrode, and to produce plasma at the working electrode in conjunction with the electrode to perform surgery without the need to use other instruments to separately input physiological saline; and in conjunction with the suction device, waste tissue, melted excitation sheets, physiological saline and other wastes can be conveniently sucked away directly through the surgical electrode without the need to use other instruments to separately establish a suction channel, and more importantly, to further reduce the safety hazards to the human body caused by the melted excitation sheets and other wastes remaining in the human body.

[0053] Among them, all the wires, water outlet channel 21, water suction channel 31, etc. are connected to the corresponding components through the handle 4 and the knife rod 5. The electrical connection part between the cable 6 and the return pole 2, and the electrical connection part between the cable 6 and the wire connected to the working pole 1 are both located inside the handle 4.

[0054] Example 2

[0055] The main differences between this embodiment and the above embodiment are:

[0056] The outer contour of the outer excitation plate 1111 is circular (not shown in the drawings).

[0057] Example 3

[0058] The main differences between this embodiment and the above embodiment are:

[0059] The outer contour of the outer excitation plate 1111 is an ellipse (not shown in the drawings).

[0060] Example 4

[0061] The main differences between this embodiment and the above embodiment are:

[0062] Reference Figure 3 The excitation sheet 111 further includes an inner excitation sheet 1112 (i.e., an excitation sheet disposed within the outline of the outer excitation sheet 1111 through an opening 1113), and the inner excitation sheet 1112 is configured to have a gradually narrowing width from the bottom to the top of the end face 11 (i.e., the portion away from the bending portion 12). This structure can generate plasma within the sheet-shaped end face, which is more conducive to cutting.

[0063] Preferably, the inner excitation sheet 1112 is in the shape of a letter "I", and its upper and lower ends are connected between the bottom and the top of the outer excitation sheet 1111, forming two holes 1113 located on both sides of the inner excitation sheet 1112, and a notch 1114 is provided on the outer side of the connection between the upper end of the inner excitation sheet 1112 and the outer excitation sheet 1111. This structure reduces the width of the top of the outer excitation sheet, making it easier to melt compared to the above scheme, preventing the sheet electrode from breaking from the middle or even breaking as a whole and falling into the human body, further reducing the harm caused by the operation to the human body, and making it safer. At the same time, this structure enables the top of the outer excitation sheet to generate stronger plasma, making the cutting sharper and the effect better.

[0064] Preferably, the water absorption hole 32 is arranged at a position corresponding to the end surface 11 of the working electrode 1 (see the attached Figure 1 , i.e. the back side of the end face portion 11). When sucking waste, the inner excitation sheet 1112 also has the function of breaking up waste tissue and preventing the water suction channel 31 from being blocked.

[0065] Preferably, the notch 1114 is a "V"-shaped notch, which can ensure the above-mentioned safety and improve the aesthetics.

[0066] Preferably, the opening edge of the notch 1114 is provided with a rounded corner 1115. Preferably, the rounded corner 1115 can be provided at all positions thereof, so that relatively more uniform plasma can be generated and the cutting effect can be better.

[0067] After adopting the above solution, the overall shape of the end surface portion 11 is similar to a "pig nose" shape.

[0068] Example 5

[0069] The main differences between this embodiment and the above embodiment are:

[0070] Reference Figure 2 The distance between the top of the end surface portion 11 and the return pole 2 is smaller than the distance between the bottom of the end surface portion 11 and the return pole 2 .

[0071] Preferably, the end face portion 11 forms an angle of 3° to 10° with the loop electrode 2, so that plasma can be generated earlier at the top of the end face portion, which is also conducive to generating stronger plasma at the top of the end face portion, making the top of the end face portion easier to melt, and preventing the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, which is a further guarantee for better cutting effect and higher safety of the present invention.

[0072] This structure enables plasma to be generated earlier at the top of the end face portion, and is also conducive to generating stronger plasma at the top of the end face portion, making the top of the end face portion easier to melt, thereby preventing the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, further reducing the harm caused by the operation to the human body and providing higher safety.

[0073] Example 6

[0074] The main differences between this embodiment and the above embodiment are:

[0075] Reference Figure 3 The width of the excitation sheet 111 on the side of the end face portion 11 is greater than the width of the excitation sheet 111 on the top of the end face portion 11, which is more conducive to the melting of the top of the end face portion. Compared with the above technical solutions, this structure can prevent the sheet electrode from breaking in the middle or even breaking as a whole and falling into the human body, further reducing the harm caused by the operation to the human body and having higher safety.

[0076] The above are only preferred embodiments of the present invention. It should be pointed out that the above preferred embodiments should not be regarded as limiting the present invention, and the scope of protection of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the scope of protection of the present invention. The parts of the present invention that are not elaborated in detail belong to the common technology in the field. Those skilled in the art can implement them without creative work based on the existing description, so they will not be repeated.

Claims

1. A safe plasma surgical electrode, comprising a working electrode (1) and a return electrode (2) powered by a cable (6), wherein the working electrode (1) and the return electrode (2) are isolated by an insulating seat (3), characterized in that: The working electrode (1) comprises a sheet-shaped end face portion (11) and a bent portion (12); the end face portion (11) is configured as an excitation plate (111) by means of an opening (1113); the excitation plate (111) comprises an external excitation plate (1111); the external excitation plate (1111) is configured as a structure with a width gradually narrowing from the bottom to the side of the end face portion (11), and the width of the bent portion (12) is greater than the width of the bottom of the excitation plate (111).

2. A safe plasma surgical electrode as claimed in claim 1, characterized in that: The excitation plate (111) comprises an outer excitation plate (1111), wherein the outer contour width of the outer excitation plate (1111) from the top of the end face portion (11) is smaller than the outer contour width of the bottom and side of the end face portion (11).

3. A safe plasma surgical electrode as claimed in claim 2, characterized in that: The outer excitation plate (1111) forms an outer contour of the end face portion (11) in any one of a "C" shape after being rotated 90° clockwise, a "D" shape after being rotated 90° counterclockwise, a circular shape or an elliptical shape.

4. A safe plasma surgical electrode as claimed in claim 2, characterized in that: The excitation plate (111) further comprises an inner excitation plate (1112), and the inner excitation plate (1112) is arranged to have a structure with a width gradually narrowing from the bottom to the top of the end surface portion (11).

5. A safe plasma surgical electrode as claimed in claim 4, characterized in that: The inner excitation plate (1112) is in the shape of a letter "I", with its upper and lower ends connected between the bottom and the top of the outer excitation plate (1111), and a notch (1114) is provided on the outer side of the connection between the upper end of the inner excitation plate (1112) and the outer excitation plate (1111).

6. A safe plasma surgical electrode as claimed in claim 5, characterized in that: The notch (1114) is a "V"-shaped notch.

7. A safe plasma surgical electrode as claimed in claim 5 or 6, characterized in that: The opening edge of the notch (1114) is provided with a rounded corner (1115).

8. A safe plasma surgical electrode as claimed in claim 7, characterized in that: The inner side of the hole (1113) is provided with a rounded corner (1115).

9. A safe plasma surgical electrode according to any one of claims 1 to 6 and 8, characterized in that: The distance between the top of the end surface portion (11) and the return pole (2) is smaller than the distance between the bottom of the end surface portion (11) and the return pole (2).

10. A safe plasma surgical electrode as claimed in claim 9, characterized in that: The end surface portion (11) forms an angle of 3° to 10° with the return pole (2).

11. The safe plasma surgical electrode according to claim 1, characterized in that: The width of the excitation plate (111) at the side of the end surface (11) is greater than the width of the excitation plate (111) at the top of the end surface (11).

12. The safe plasma surgical electrode according to claim 1, characterized in that: The return pole (2) is provided with a water outlet hole (22) connected to the water outlet channel (21).

13. A safe plasma surgical electrode according to claim 1 or 12, characterized in that: The insulating seat (3) is provided with a water absorption hole (32) connected to the water absorption channel (31).

14. A safe plasma surgical electrode according to any one of claims 1 to 6 and 8, characterized in that: The loop pole (2) is in a curved shape.

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