A plasma electrode applied to oral surgery

Abstract

The present invention belongs to the technical field of medical devices, and particularly relates to a plasma electrode applied to oral surgery, which comprises an electrode assembly, a connection assembly and a housing assembly. The connection assembly is disposed inside the housing assembly, and the housing assembly is sleeved on the rear end side of the outer surface of the electrode assembly. The electrode assembly sequentially includes a working electrode, an inner insulating sleeve, an electrode fixing member, a loop electrode assembly and an outer insulating sleeve which are coaxially arranged from inside to outside. The present invention can not only synchronously operate cutting and coagulation, but also separately operate coagulation, with no bleeding during the operation, which can provide good vision and convenience for the operator, ensure that the plasma electrode is widely used in oral surgery, and at the same time enable the working electrode to easily and accurately observe the cutting depth and position and precisely control hemostasis or coagulation, without worrying about the risk of scalding, reducing the pain of the patient after the operation, shortening the recovery time, and significantly reducing the infection risk.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a plasma electrode applied to oral surgery. Background Art

[0002] Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials, and other similar or related items that are directly or indirectly used on the human body. A scalpel is a relatively common surgical medical device. Since there are many types of oral surgeries, mainly including odontogenic cyst enucleation, non-odontogenic cyst enucleation, periodontal surgery, tooth extraction, soft tissue cyst enucleation, and oral and maxillofacial tumor resection, etc., except for tooth extraction, other types of surgeries more or less require the use of a scalpel for cutting operations.

[0003] Scalpels are usually ordinary blade scalpels or electrocautery scalpels, and laser scalpels are occasionally seen. When an ordinary blade scalpel is used for oral surgery, only ordinary incisions can be made. Since capillaries are densely distributed in the oral cavity, it is necessary to frequently replace the hemostatic forceps or towel forceps for hemostasis operations. If the surgery involves the periodontal area, the hemostatic forceps cannot play a good hemostatic role, and methods such as compression or placing periodontal dressing need to be used for hemostasis. The above two hemostasis methods cannot achieve immediate hemostasis. In addition, for some upward incision operations, it is necessary to withdraw the scalpel to change the blade direction or replace the blade. Such an operation not only affects the surgical field of view but also prolongs the operation time and increases the patient's pain; when using an electrocautery scalpel and a laser scalpel for oral surgery incision operations, due to the large energy, carbonization hemostasis can be carried out while cutting during the operation. However, for a laser scalpel, due to the large laser energy and being different from traditional surgical medical devices, its cutting feedback is less, so it is more difficult to control the energy and cutting depth during the operation. And when facing a narrow gap, unclear surgical field, or performing surgical operations on the molar area, it is not easy to reach the cutting position with a laser scalpel. Similarly, an electrocautery scalpel can also achieve cutting and hemostasis simultaneously. However, the working mechanism of the electrocautery scalpel is to heat to evaporate the cell fluid to achieve the purpose of cutting. The cell fluid will be heated to 250 - 350 °C and cannot cool down quickly when the output stops, resulting in frequent occurrences of electrocautery scalpel scalding the patient's oral cavity during actual use, and the risk of scalding is greater the deeper into the oral cavity; therefore, both laser scalpels and electrocautery scalpels use high heat for cutting, which is likely to cause wound surface carbonization. This not only seriously affects the formation of granulation but also prevents the growth of fibroblast cells in the body, prolongs the recovery time, and the postoperative pain lasts for a long time, with a high degree of pain and a high degree of wound inflammation. In addition, permanent scars are extremely likely to be left due to the carbonization of the wound tissue.

[0004] In the prior art, there are studies on achieving fine cutting and ablation effects for surgical electrodes. For example, in patent applications CN108013931A, a cryogenic plasma surgical electrode; CN111643176A, a radiofrequency ablation electrode for minimally invasive middle ear surgery and its usage method; CN216167941U, a plasma dental electrode for root canal disinfection; CN218960911U, a detachable plasma surgical electrode, etc. All of them use plasma surgical electrodes to perform surgical cutting and ablation treatment on patients, solving the operation safety problems brought by ordinary blade scalpels, electrocautery knives, and laser knives during the operation. However, the existing surgical electrodes are only applicable to ophthalmology, plastic surgery, middle ear puncture surgery, oral disinfection, etc. For oral surgeries with dense capillaries, it is difficult to be widely applied. The prior art currently has difficulty accurately judging the cutting depth and position of the knife head and precisely controlling hemostasis, resulting in more pain for patients after surgery, a longer recovery time, and a risk of postoperative infection. Summary of the Invention

[0005] The purpose of the present invention is to provide a plasma electrode applied to oral surgery to solve the problems in the above-mentioned background technology, that is, the current surgical electrodes are difficult to accurately judge the cutting depth and position of the knife head for oral surgeries with dense capillaries, difficult to precisely control hemostasis, resulting in pain for patients after surgery, a long recovery time, and a risk of postoperative infection.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A plasma electrode applied to oral surgery includes an electrode assembly, a connection assembly, and a housing assembly. The connection assembly is placed inside the housing assembly, and the housing assembly is sleeved on the rear end side of the outer surface of the electrode assembly. The electrode assembly sequentially includes a working electrode, an inner insulating sleeve, a loop electrode assembly, and an outer insulating sleeve coaxially arranged from inside to outside. The loop electrode assembly sequentially includes a loop electrode, a sandwich member, and a peripheral member coaxially arranged from inside to outside. The rear ends of the loop electrode, the sandwich member, and the peripheral member are aligned and sealed, and the gap between the three forms a liquid supply channel for the flow of physiological saline. A step is formed between the front end of the loop electrode and the front end of the peripheral member. A step is formed between the front end of the working electrode and the front end of the loop electrode, and its rear end extends out of the loop electrode assembly and is connected to the connection assembly through a wire. The connection assembly is also connected to the rear end of the loop electrode through a wire. An electrode fixing member is sleeved on the outer surface of the inner insulating sleeve, and the two ends of the electrode fixing member are respectively aligned with the two ends of the loop electrode. An attraction channel is formed between the electrode fixing member and the loop electrode or within the electrode fixing member itself.

[0007] Further, a through hole A is provided at the rear end of the peripheral member. The sandwich member is provided with a slit extending forward from the rear end. The starting end of the slit is aligned with the through hole A. Normal saline flows into the liquid supply channel through the through hole A and the slit. The length of the peripheral member is greater than the length of the sandwich member but less than the length of the loop electrode. The length of the sandwich member is less than the length of the loop electrode. The length of the loop electrode is less than the length of the working electrode. The inner insulating sleeve is sleeved on a partial area of the head of the working electrode and the entire area of the support rod of the working electrode except for the tail section. The outer insulating sleeve is sleeved on the outer surface of the peripheral member and has the same length as the peripheral member.

[0008] Further, there are two electrode fixing members. The two electrode fixing members are respectively sleeved on the front section and the rear section of the outer surface of the inner insulating sleeve. The two electrode fixing members are aligned with the two ends of the loop electrode respectively through an insulating support tube sleeved on the middle section of the outer surface of the inner insulating sleeve.

[0009] Further, the electrode fixing member is provided in three different structural schemes: one of a single-chamber tube, a three-chamber tube, or a special-shaped tube. Specifically:

[0010] Structural scheme one: A chamber for the working electrode to pass through is provided inside the single-chamber tube, and two rectangular support portions extend out along any radial direction on its outer surface. An attraction channel is formed between the support portion and the loop electrode.

[0011] Structural scheme two: The three-chamber tube includes a central chamber and an edge chamber with different shapes. The edge chamber surrounds the central chamber. The working electrode passes through the central chamber, and the edge chamber serves as the attraction channel.

[0012] Structural scheme three: The special-shaped tube includes a first chamber and a second chamber with different shapes. The working electrode passes through the first chamber and the second chamber serves as the attraction channel, or the working electrode passes through the second chamber and the first chamber serves as the attraction channel.

[0013] Further, the housing assembly includes a front housing sleeved on the outer surface of the rear side of the electrode assembly and a rear housing fixed to the rear section of the front housing. A water injection port member and a suction port member arranged behind the water injection port member are embedded on the front housing. One end of the water injection port of the water injection port member is communicated with the through hole A on the peripheral member and the other end is connected with an external water injection pipe. One end of the suction port of the suction port member is communicated with the end of the attraction channel and the other end is connected with an external suction pipe. The external suction pipe and the external water injection pipe are fixed on a fixing device arranged on the outer surface of the end of the rear housing.

[0014] Further, the connection component includes a pin fixing member disposed at the inner end of the front housing and a jack fixing member disposed inside the rear housing. The jack fixing member and the rear housing form a cable assembly. The pin fixing member, the front housing, and the electrode assembly form a handle assembly. The handle assembly and the cable assembly are detachably connected.

[0015] Further, the pin fixing member includes a pin fixing ring, a pin fixing plate, and pins. The pin fixing plate includes an upper plate and a lower plate. Through holes for the pins to pass through are provided on both the upper plate and the lower plate. The outer edge of the pin fixing plate is provided with protrusions and recessed structures and is embedded in the pin fixing ring through the protrusions and recessed structures. An axial groove A is formed on the outer surface of the pin fixing ring and is fixed inside the front housing through the groove A.

[0016] Further, the jack fixing member includes a jack holder, a jack, and a fixed PCB board. A through hole B axially penetrating the jack fixing member is provided on the jack holder. The jack passes through the through hole B and passes through the fixed PCB board provided at the rear side of the jack holder. Axial grooves B are formed on the front and rear parts of the jack holder and on the outer surface of the fixed PCB board. The rear part of the jack holder and the fixed PCB board are fixed inside the rear housing through the grooves B provided on their surfaces, and the front part of the jack holder is fixed inside the front housing through the groove B provided on its surface.

[0017] Further, the pins are inserted into the jacks and are simultaneously connected to the rear ends of the working electrode and the return electrode through wires. The jacks are connected to external cables, and the external cables are connected to a host computer. The host computer is electrically connected to the electrode assembly through the external cables, the jacks, and the pins.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention provides a plasma electrode applied to oral surgery, which can not only perform cutting and coagulation operations simultaneously (while cutting, the energy carried by the plasma electrode can help with coagulation), but also perform coagulation operation alone, with no bleeding during the operation, providing good vision and convenience for the operator. Moreover, due to the low energy penetration of the plasma electrode, the risk of scalding is smaller, which can reduce the pain of the patient after the operation and shorten the recovery time. In addition, the wound is small and there is no carbonization, which can reduce the degree of inflammation, kill the microorganisms on the wound surface, greatly reduce the risk of infection, and ensure that there is no scar left after the patient's wound heals and the aesthetics is good. Also, since an electrode fixing member is provided between the working electrode and the return electrode in the present invention, the return electrode and the working electrode are effectively fixed in the circumferential and radial directions, effectively avoiding relative shaking between the return electrode and the working electrode and reducing the surgical risk. Therefore, it can be widely applied to oral surgeries with dense capillaries.

[0020] 2. The present invention forms a liquid supply channel through the loop electrode assembly. On the one hand, there is no need for a dedicated liquid supply device to provide the physiological saline necessary for plasma surgery, making the surgical process more convenient and fast. On the other hand, forming the liquid supply channel through the loop electrode assembly has a simpler and more feasible production process. Therefore, compared with other plasma electrodes that may be provided with a liquid supply channel, its yield rate is higher.

[0021] 3. The present invention adopts electrode fixing parts with three different structural schemes, enabling an attraction channel to be formed between it and the loop electrode or by itself. The waste liquid generated during oral surgery and the cut tissue can be sucked away through this attraction channel, keeping the surgical site with a clear view at all times. Further, the electrode fixing parts are arranged at the head and tail positions of the loop electrode and the working electrode, and are supported by an insulating support tube in the middle. On the one hand, it effectively avoids the problem of axial sliding of the two electrode fixing parts. On the other hand, it can also significantly expand the area of the attraction channel at the insulating support tube relative to the head and tail positions, resulting in a better attraction effect.

[0022] 4. Steps are formed between the front end of the working electrode and the front end of the loop electrode of the plasma electrode of the present invention, and between the loop electrode and the outer member, enabling the physiological saline to flow smoothly towards the working electrode while also making it more convenient for the surgeon to accurately observe the cutting depth and position. Thus, the plasma electrode can more conveniently and precisely control hemostasis or blood coagulation.

[0023] 5. The handle assembly and the cable assembly of the present invention are detachably connected, enabling different handle assemblies to be replaced according to actual needs during the operation to meet the requirements of fine cutting. After the operation, the handle assembly can be removed and discarded from the cable assembly, while the cable assembly can be reused after disinfection, improving the utilization rate of surgical medical device resources and effectively reducing the surgical cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the plasma electrode of the present invention;

[0025] Figure 2 is a schematic diagram of the structure after removing the external cable and pipeline of the present invention;

[0026] Figure 3 is a partially enlarged schematic diagram of the electrode assembly of the present invention and the corresponding cross-sectional structure diagram;

[0027] Figure 4 is a side view of the present invention and the cross-sectional structure diagram from the side view perspective;

[0028] Figure 5 is a top view of the present invention and the cross-sectional structure diagram from the top view perspective;

[0029] Figure 6 Schematic diagram of the exploded structure of the circuit electrode assembly of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the electrode fixing member of Embodiment 1 of the present invention;

[0031] Figure 8 Schematic diagram of the structure of the electrode fixing member of Embodiment 2 of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the electrode fixing member of Embodiment 3 of the present invention;

[0033] Figure 10 Schematic diagram of the exploded structure of the connection assembly of the present invention.

[0034] Wherein: 1. Electrode assembly; 11. Working electrode; 12. Inner insulating sleeve; 13. Electrode fixing member; 131. Chamber; 132. Support portion; 14. Loop electrode; 15. Interlayer member; 16. Peripheral member; 17. Outer insulating sleeve; 18. Through hole A; 19. Insulating support tube; 101. Suction channel; 102. Liquid supply channel; 2. Connection assembly; 210. Pin fixing member; 211. Pin; 212. Pin fixing ring; 213. Pin fixing plate; 220. Jack fixing member; 221. Jack holder; 2211. Front portion; 2212. Rear portion; 222. Jack; 223. Fixed PCB board; 3. Housing assembly; 310. Front section housing; 311. Water injection port member; 3110. External water injection pipe; (312. Suction port member; 3120. External suction pipe;) 320. Rear section housing; 322. Marking direction; 4. External cable; 51. Three - chamber tube; 52. Edge chamber; 53. Central chamber; 610. Special - shaped tube; 620. First chamber; 630. Second chamber. Detailed implementation manners

[0035] The following embodiments are used to further illustrate the content of the present invention and do not limit the application of the present invention.

[0036] Embodiment 1: (Taking a single - chamber tube as the electrode fixing member 13 as an example)

[0037] Please refer to Figures 1-7 and Figure 10 A plasma electrode applied to oral surgery includes a tubular - structured electrode assembly 1, a connection assembly 2, and a housing assembly 3.

[0038] Note: In the original text, there is a bracket in item 21 that seems to be an incomplete description. I have translated it as it is and marked the suspected incomplete part in parentheses in the translation. If this is an error in the original text, please check and correct it.The electrode assembly 1 is a tubular structure, which sequentially includes a working electrode 11, an inner insulating sleeve 12, an electrode fixing member 13, a loop electrode assembly, and an outer insulating sleeve 17 that are coaxially arranged from the inside out. The working electrode 11 is composed of solid tungsten steel and a flat head (the head of the working electrode 11 is not limited to being flat, and can also be filamentous, annular, spherical, etc., and different electrode head shapes can be set according to different treatment requirements; the working electrode 11 is not limited to being a solid rod shape, and can also be tubular, sheet-shaped, or a combination of these shapes. For example, the rear section is a solid rod shape and the front section is tubular, etc.). The inner insulating sleeve 12 is sleeved on a partial area of the head of the working electrode 11 and the entire area of the support rod except the tail section. The loop electrode assembly includes a loop electrode 14, a sandwich member 15, and a peripheral member 16. Among them, the loop electrode 14 is sleeved on the outer surface of the inner insulating sleeve 12 and its length is less than that of the working electrode 11. The sandwich member 15 is sleeved on the outer surface of the loop electrode 14 and its length is less than that of the loop electrode 14, and two slits leading to the front end of the sandwich member 15 are opened in the axial direction. The peripheral member 16 is sleeved on the outer surface of the sandwich member 15 and its length is greater than that of the sandwich member 15 but less than that of the loop electrode 14, and a through hole A18 for saline to enter is opened at the rear end of the peripheral member 16. The through hole A18 is aligned with the starting end of the slit. A liquid supply channel 102 is formed between the peripheral member 16, the sandwich member 15, and the loop electrode 14. Saline enters the liquid supply channel 102 through the through hole A18 and the slit. Then, the outer insulating sleeve 17 is sleeved on the outer surface of the peripheral member 16 and its length is equal to that of the peripheral member 16. Then, the rear ends of the loop electrode 14, the sandwich member 15, and the peripheral member 16 are aligned and welded and sealed, so that a closed space is formed at the end of the liquid supply channel 102 to avoid water leakage. The state at the front end of the loop electrode assembly is that the loop electrode 14 protrudes from the peripheral member 16 by a certain distance, so that a step is formed between the loop electrode 14 and the peripheral member 16;

[0039] An electrode fixing member 13 is sleeved on each of the front and rear sections of the outer surface of the inner insulating sleeve 12. The two electrode fixing members 13 are respectively aligned with the front end and the rear end of the loop electrode 14, so that the electrode fixing member 13 is sleeved between the inner insulating sleeve 12 and the loop electrode 14, and is used to fix the loop electrode 14 and the working electrode 11 in the circumferential and radial directions. The electrode fixing member 13 is a single-chamber tube made of insulating medical plastic (such as Figure 7 shown). A chamber 131 for the working electrode 11 to pass through is provided inside the single-chamber tube, and two rectangular support portions 132 extend from its outer surface along any radial direction. An extraction channel 101 for sucking out the waste liquid generated during the operation is formed between the support portion 132 and the loop electrode 14. In addition, an insulating support tube 19 (the insulating support tube can be a Teflon tube) is also sleeved on the outer surface of the inner insulating sleeve 12 and in the area between the two electrode fixing members 13 to prevent the two electrode fixing members 13 from sliding axially;

[0040] The working electrode 11 exposes the loop electrode 14 and the electrode fixing member 13 by a certain distance at both the front end and the rear end. A step is formed between the front end of the working electrode 11 and the front end of the loop electrode 14. The rear end of the working electrode 11 extends out of the loop electrode 14 and is connected to the connection assembly 2 through a wire. The connection assembly 2 is also connected to the rear end of the loop electrode 14 through a wire;

[0041] The distance between the above-mentioned working electrode 11 and the loop electrode 14 is 3 - 15 mm; the diameter of the working electrode 11 is 0.2 - 2 mm; the length of the working electrode 11 is 0.5 - 7 mm; the length of the loop electrode 14 is 1 - 10 mm.

[0042] The housing assembly 3 includes a front housing 310 sleeved on the outer surface of the rear end side of the electrode assembly 1 and a rear housing 320 fixed to the rear section of the front housing 310. The connection assembly 2 includes a pin fixing member 210 disposed at the inner end position of the front housing 310 and a jack fixing member 220 disposed inside the rear housing 320;

[0043] A water injection port member 311 and a suction port member 312 are embedded in the front housing 310. The water injection port member 311 is disposed before the suction port member 312, and the water injection port member 311 and the suction port member 312 are fixed together by means of embedding and bonding, etc.;

[0044] When the front housing 310 is sleeved on the outer surface of the rear end side of the electrode assembly 1, one end of the water injection port of the water injection port member 311 communicates with the through hole A18 on the peripheral member 16 and the other end is connected to an external water injection pipe 3110. During the operation, the normal saline in the external water injection pipe 3110 flows through the water injection port from the through hole A18 through the liquid supply channel 102 to the head of the working electrode 11; while one end of the suction port of the suction port member 312 is communicated with the end of the suction channel 101 and the other end is connected to an external suction pipe 3120. During the operation, the waste liquid generated during the operation can be sucked out. At the same time, a photocuring layer is formed on the inner surface of the front housing 310 and at the position where the end of the suction channel 101 is located. While the suction channel 101 is sealed, the wires of the working electrode 11 and the loop electrode 14 are also fixed inside to prevent the wires from winding; photocuring is also carried out at the position where the front end of the front housing 310 is in contact with the electrode assembly 1 to prevent the electrode assembly 1 from shaking inside the front housing 310 and form a sealed space;

[0045] The above-mentioned external liquid injection tube 3110 and external suction tube 3120 are arranged outside the housing assembly 3, which is convenient for being discarded together with the electrode after the operation (the electrode here is for single use). However, it can also be understood that the liquid supply channel 102 and the suction channel 101 can be arranged inside the entire housing assembly 3, that is, the liquid supply channel 102 and the suction channel 101 pass through the rear housing 320 and penetrate out of the end of the rear housing 320 and are respectively communicated with an external liquid supply device and a suction device (the functions and structures of conventional devices such as the liquid supply device and the suction device are well known in the art, and the connection settings are also common knowledge, so they will not be described in detail here and are not shown in the drawings).

[0046] The pin fixing member 210 includes a pin fixing ring 212, a pin fixing plate 213 and pins 211. The pin fixing plate 213 includes an upper plate and a lower plate. Through holes for the pins 211 to pass through are provided on both the upper plate and the lower plate. A convex and concave structure is provided on the outer edge of the pin fixing plate 213. Similarly, a convex and concave structure matching the outer extension of the pin fixing plate 213 is also provided inside the pin fixing ring 212, so that the pin fixing plate 213 can be firmly fitted inside the pin fixing ring 212. The pins 211 pass through the through holes on the pin fixing plate 213. An axial groove A is provided on the outer surface of the pin fixing ring 212, so that the whole pin fixing member 210 is fixed inside the front housing 310 through the groove A;

[0047] The jack fixing member 220 includes a jack holder 221, a jack 222 and a fixed PCB board 223. A through hole B axially penetrating the jack fixing member 220 is provided on the jack holder 221. The jack 222 passes through the through hole B and passes through the fixed PCB board 223 arranged at the rear side of the jack holder 221;

[0048] The jack holder 221 further includes a front part 2211 with a smaller diameter and a rear part 2212 with a larger diameter. An axial groove B is provided on the outer surfaces of the whole jack holder 221 and the fixed PCB board 223. The rear part 2212 of the jack holder 221 and the fixed PCB board 223 are fixed inside the rear housing 320 through the groove B provided on their surfaces. A fixing device 321 is provided on the outer surface of the end of the rear housing 320 for fixing the external liquid injection tube 3110 and the external suction tube 3120;

[0049] The front housing 310, the electrode assembly 1, and the pin fixing member 210 form a handle assembly. The jack fixing member 220 and the rear housing 320 form a cable assembly. The handle assembly and the cable assembly are detachably connected. Before the operation, the handle assembly is inserted into the cable assembly along the marking direction 322 on the surfaces of the front housing 310 and the rear housing 320. At this time, the front portion 2211 of the jack fixing member 220 is fixed inside the front housing 310 through the groove B on its surface. The pin 211 is inserted into the jack 222 and is simultaneously connected to the rear ends of the working electrode 11 and the return electrode 14 through wires. The jack 222 is connected to an external cable 4, and the external cable 4 is connected to a host computer (the functions and structures of conventional devices such as the host computer are well known in the art, and the connection settings are also common knowledge, so no further description is given here and it is not shown in the drawings). The host computer is electrically connected to the electrode assembly 1 through the external cable 4, the jack 222, and the pin 211, and current can be passed into the electrode assembly 1.

[0050] During the operation, sometimes it is necessary to replace different surgical electrodes. In this case, the detachable connection between the handle assembly and the cable assembly makes it convenient to replace the surgical electrodes. After the operation, the handle assembly is discarded, and the cable assembly can be reused after disinfection. In addition, during the operation, functions such as cutting and coagulation can be selected on the host computer, and the output of energy is controlled through a foot switch (the functions and structures of conventional devices such as the foot switch are well known in the art, and the connection settings are also common knowledge, so no further description is given here and it is not shown in the drawings), so that the flow controller (the functions and structures of conventional devices such as the flow controller are well known in the art, and the connection settings are also common knowledge, so no further description is given here and it is not shown in the drawings) continuously detects whether there is an energy output signal from the host computer. When it detects an energy output signal, the external liquid supply device is connected to the external water injection pipe 3110 to inject physiological saline into the head of the working electrode 11, and the external suction device is connected to the external suction pipe 3120 to continuously suck the waste liquid generated during the operation.

[0051] The working principle and usage process of the present invention are as Figures 1-7 and Figure 10As shown in the figure, an external cable 4 is connected to the host to energize the electrode assembly 1. The physiological saline flows through the liquid supply channel 102 to the head of the working electrode 11. At this time, the plasma energy flows between the working electrode 11 and the return electrode 14. Through the conductivity of the physiological saline, a highly concentrated plasma vapor sheath layer is formed around the electrode assembly 1. The plasma sheath layer is composed of a large number of charged particles. When the charged particles are accelerated by the electric field and generate sufficient energy and have strong oxidizing properties, at a low temperature (40°C - 70°C), the molecular bonds of the target tissue cells are broken, and the tissue is quickly decomposed into low-molecular-weight molecules and atoms, so as to form a real-time and efficient tissue cutting and ablation effect at a lower temperature, achieving the purpose of reducing the postoperative pain of patients, shortening the recovery time, and significantly reducing the infection risk, ensuring that there is no scar left after the patient's wound heals and the aesthetics is good.

[0052] Example 2: (Taking the three-chamber tube 51 as the electrode fixing member 13 as an example)

[0053] Please refer to Figures 1-6 and Figure 8 、 Figure 10 This embodiment is different from Embodiment 1 only in that: the electrode fixing member 13 is a three-chamber tube 51 made of insulating medical plastic (as shown in Figure 8 ). The three-chamber tube 51 includes a central chamber 53 and an edge chamber 52 with different shapes. The edge chamber 52 is arranged around the central chamber 53. The working electrode 11 passes through the central chamber 53 and the edge chamber 52 serves as the suction channel 101.

[0054] Example 3: (Taking the special-shaped tube 610 as the electrode fixing member 13 as an example)

[0055] Please refer to Figures 1-6 and Figures 9-10 This embodiment is different from Embodiment 1 only in that: the electrode fixing member 13 is a special-shaped tube 610 made of insulating medical plastic (as shown in Figure 9 ).

[0056] The special-shaped tube 610 includes a first chamber 620 and a second chamber 630 with different shapes. The working electrode 11 passes through the first chamber 620 and the second chamber 630 serves as the suction channel 101, or the working electrode 11 passes through the second chamber 630 and the first chamber 620 serves as the suction channel 101.

Claims

1. A plasma electrode applied to oral surgery, comprising an electrode assembly, a connection assembly and a housing assembly. The connection assembly is disposed inside the housing assembly, and the housing assembly is sleeved on the rear end side of the outer surface of the electrode assembly. The electrode assembly sequentially includes a working electrode, an inner insulating sleeve, a loop electrode assembly and an outer insulating sleeve coaxially arranged from inside to outside. It is characterized in that, The loop electrode assembly sequentially includes a loop electrode, an interlayer member, and a peripheral member that are coaxially arranged from the inside to the outside. The rear ends of the loop electrode, the interlayer member, and the peripheral member are aligned and sealed, and the gap between the three forms a liquid supply channel for the flow of physiological saline. An electrode fixing member is sleeved on each of the front and rear sections of the outer surface of the inner insulating sleeve. The two electrode fixing members are respectively aligned with the front end and the rear end of the loop electrode. An insulating support tube is sleeved on the outer surface of the inner insulating sleeve in the area between the two electrode fixing members to prevent the two electrode fixing members from sliding axially. An attraction channel is formed between the electrode fixing member and the loop electrode or within the electrode fixing member itself.

2. The plasma electrode applied to oral surgery according to claim 1, wherein A step is formed between the front end of the loop electrode and the front end of the peripheral member. A step is formed between the front end of the working electrode and the front end of the loop electrode, and its rear end extends out of the loop electrode assembly and is connected to a connection assembly through a wire. The connection assembly is also connected to the rear end of the loop electrode through a wire.

3. The plasma electrode for oral surgery according to claim 2, wherein A through hole A is formed at the rear end of the peripheral member. The interlayer member is provided with a slit extending forward from the rear end. The starting end of the slit is aligned with the through hole A, and physiological saline flows into the liquid supply channel through the through hole A and the slit. The length of the peripheral member is greater than the length of the interlayer member but less than the length of the loop electrode. The length of the interlayer member is less than the length of the loop electrode. The length of the loop electrode is less than the length of the working electrode.

4. A plasma electrode for oral surgery according to claim 1, characterized in that, The inner insulating sleeve is sleeved on a partial area of the head of the working electrode and the entire area of the support rod of the working electrode except the tail section. The outer insulating sleeve is sleeved on the outer surface of the peripheral member and has the same length as the peripheral member.

5. A plasma electrode applied to oral surgery according to claim 1, characterized in that, The electrode fixing member is one of a single-chamber tube, a three-chamber tube, and a special-shaped tube. A chamber for the working electrode to pass through is arranged inside the single-chamber tube, and two rectangular support portions extend out along any radial direction on its outer surface. An attraction channel is formed between the support portion and the loop electrode. The three-chamber tube includes a central chamber and an edge chamber with different shapes. The edge chamber surrounds the central chamber. The working electrode passes through the central chamber, and the edge chamber serves as the attraction channel. The special-shaped tube includes a first chamber and a second chamber with different shapes. The working electrode passes through the first chamber and the second chamber serves as the attraction channel, or the working electrode passes through the second chamber and the first chamber serves as the attraction channel.

6. A plasma electrode applied to oral surgery according to claim 1, characterized in that, The housing assembly includes a front housing sleeved on the rear side of the outer surface of the electrode assembly and a rear housing fixed to the rear section of the front housing. A water injection port member and a suction port member arranged behind the water injection port member are embedded on the front housing. One end of the water injection port of the water injection port member is communicated with the through hole A on the peripheral member, and the other end is connected to an external water injection pipe. One end of the suction port of the suction port member is communicated with the end of the attraction channel, and the other end is connected to an external suction pipe. The external suction pipe and the external water injection pipe are fixed on a fixing device arranged on the outer surface of the end of the rear housing.

7. A plasma electrode for oral surgery according to claim 1, characterized in that, The connection component includes a pin fixing member disposed at the inner end of the front housing and a jack fixing member disposed inside the rear housing. The jack fixing member and the rear housing form a cable assembly. The pin fixing member, the front housing, and the electrode assembly form a handle assembly. The handle assembly and the cable assembly are detachably connected.

8. A plasma electrode for oral surgery according to claim 7, characterized in that, The pin fixing member includes a pin fixing ring, a pin fixing plate, and pins. The pin fixing plate includes an upper plate and a lower plate. Through holes for the pins to pass through are provided on both the upper plate and the lower plate. The outer edge of the pin fixing plate is provided with protrusions and recessed structures and is embedded in the pin fixing ring through the protrusions and recessed structures. An axial groove A is formed on the outer surface of the pin fixing ring and is fixed inside the front housing through the groove A. The jack fixing member includes a jack holder, a jack, and a fixed PCB board. A through hole B axially penetrating the jack fixing member is provided on the jack holder. The jack passes through the through hole B and passes through the fixed PCB board disposed at the rear side of the jack holder. Axial grooves B are formed on the front and rear parts of the jack holder and on the outer surface of the fixed PCB board. The rear part of the jack holder and the fixed PCB board are fixed inside the rear housing through the grooves B provided on their surfaces, and the front part of the jack holder is fixed inside the front housing through the groove B provided on its surface.

9. A plasma electrode for oral surgery according to claim 8, characterized in that, The pins are inserted into the jacks and are simultaneously connected to the rear ends of the working electrode and the return electrode through wires. The jacks are connected to external cables, and the external cables are connected to a host computer. The host computer is electrically connected to the electrode assembly through the external cables, the jacks, and the pins.

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