Low-temperature anti-sticking type plasma ablation cutting knife and cutting method thereof

Abstract

The application relates to the technical field of medical devices, and discloses a low-temperature anti-sticking type plasma ablation cutting knife and a cutting method thereof, which comprises a clamping mechanism, a mounting cavity is arranged in the shell, the clamping mechanism is arranged in the mounting cavity, and the clamping mechanism clamps a polygonal sleeve so that an electrode knife does not rotate; and a rotating mechanism, the rotating mechanism rotates to drive the polygonal sleeve to rotate. Through the cooperative work of the independent clamping mechanism and the rotating mechanism, the angle of the electrode knife can be directly and independently adjusted by a doctor only by rotating a rotating ring while the electrode knife is kept fixed in the circumferential direction, the whole cutting knife shell and the power cord connected with the cutting knife shell do not need to be rotated, fatigue damage and safety hazards of the power cord caused by repeated torsion are fundamentally avoided, the cutting knife is prevented from spontaneously rotating back due to the torsion of the power cord after the doctor's hand is loosened, the adjusted angle of the electrode knife is prevented from being deviated, and the adverse effects on the operation effect and the safety of a patient are avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a low-temperature non-stick plasma ablation cutting blade and its cutting method. Background Technology

[0002] Plasma ablation cutting tools are now widely used in clinical surgery, primarily for tissue cutting and electrocoagulation hemostasis. During the procedure, to maintain the stability of the electrode and prevent unexpected rotation, a polygonal sleeve structure (such as...) is typically provided at the end of the electrode's insulating sleeve. Figures 3-5 As shown in the figure, the polygonal sleeve cooperates with the corresponding polygonal slot inside the cutting blade housing to achieve circumferential fixation of the electrode blade.

[0003] However, while the existing design achieves anti-rotation functionality, it also introduces certain operational limitations. When the angle of the electrode blade needs to be adjusted during surgery, since the electrode blade itself cannot rotate relative to the cutting blade housing, the surgeon must rotate the entire cutting blade device to achieve the angle adjustment. Because one end of the cutting blade is usually connected to a power cord, the power cord is prone to twisting and tangling during repeated or large-amplitude rotation of the device. Long-term use may lead to fatigue of the internal wires, wear and even breakage of the insulation layer, affecting the lifespan and electrical safety of the instrument.

[0004] Furthermore, the rebound force generated by the power cord after twisting will act on the cutter's outer shell. If the surgeon loosens the handle slightly after adjusting the angle, this rebound force may cause the cutter to rotate spontaneously, causing the adjusted electrode angle to shift. This problem not only increases the workload during surgery but may also affect the precision and stability of the procedure. Especially in delicate surgeries, unexpected angle changes may even adversely affect the surgical outcome and patient safety. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a low-temperature, non-stick plasma ablation cutting blade and its cutting method, so as to achieve independent and stable adjustment of the electrode blade angle without twisting the power cord.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A low-temperature, non-stick plasma ablation cutting blade includes a housing, a control component, an electrode blade, and a power cord. The cutting blade further includes:

[0008] The clamping mechanism has an installation cavity inside the outer shell, and the clamping mechanism is installed in the installation cavity. The electrode blade includes an electrode body, a blade head, and an insulating sleeve. The insulating sleeve is sleeved around the electrode body. The blade head is located at the end of the electrode body. The end of the insulating sleeve is provided with a polygonal sleeve. The polygonal sleeve is located in the installation cavity. The clamping mechanism clamps the polygonal sleeve to prevent the electrode blade from rotating.

[0009] The rotating mechanism includes a rotating ring, connecting rods, and a clamping plate. The rotating ring is rotatably mounted on the outer periphery of the outer shell. Several connecting rods are provided on the inner side of the rotating ring. The connecting rods penetrate the outer shell and extend into the mounting cavity. The end of the connecting rod is provided with a clamping plate, which abuts against the corner of the polygonal sleeve. The surface of the outer shell has a rotating groove for the connecting rods to rotate. When the clamping mechanism releases the polygonal sleeve, the rotating mechanism rotates, causing the polygonal sleeve to rotate and the electrode blade to change its angle.

[0010] As a further embodiment of the present invention: the clamping mechanism includes a movable ring, a rotating sleeve, a sleeve, a sleeve rod, and a clamping plate. The rotating sleeve is rotatably installed on the outer periphery of the outer shell. Several pressure blocks are provided on the outer periphery of the movable ring. The pressure blocks penetrate the outer shell and are fixedly connected to the inner side of the rotating sleeve. Several inclined grooves are opened on the surface of the movable ring, and the inclined grooves are arranged in a ring array. Several sleeves are installed in the mounting cavity, and the sleeves are arranged in a ring array. A sleeve rod is movably sleeved in the sleeve. A clamping plate is elastically rotatably installed at the other end of the sleeve rod. The clamping plate abuts against the side of the polygonal sleeve. A guide rod is provided on the side of the sleeve rod. A through groove is opened on the sleeve for the guide rod to move. The guide rod is sleeved in the inclined groove.

[0011] As a further embodiment of the present invention: the clamping mechanism further includes a fixing ring, the fixing ring is fixed inside the mounting cavity, the pressure block slides along the fixing ring, the fixing ring is provided with a plurality of baffles, the baffles are connected to the pressure block by an elastic element, and the fixing ring and the outer shell are provided with a rotating groove for the pressure block to rotate.

[0012] As a further aspect of the present invention: an elastic telescopic rod is installed on the outer shell, and an insertion hole is provided on the rotating sleeve. When the rotating sleeve rotates, the elastic telescopic rod is inserted into the insertion hole.

[0013] As a further aspect of the present invention: the outer shell surface is provided with a buckle.

[0014] As a further aspect of the present invention: the outer periphery of the rotating ring is provided with a plurality of short levers and a plurality of long levers, the number of the long levers being the same as the number of the connecting rods.

[0015] As a further embodiment of the present invention: the control component includes a PCB board, a switch board and a conductive sleeve, the PCB board is installed inside the housing, the switch board is installed on the PCB board, the conductive sleeve is connected to the PCB board, and the electrode body is movably fitted inside the conductive sleeve.

[0016] A cutting method for a low-temperature non-stick plasma ablation cutting blade, the method being applied to the aforementioned low-temperature non-stick plasma ablation cutting blade, the method comprising the following steps:

[0017] Step S1: Preoperative preparation and angle pre-adjustment. According to the surgical requirements, before the cutting blade is powered on, operate the clamping mechanism to release the lock on the electrode blade, then turn the rotating ring of the rotating mechanism to adjust the tip of the electrode blade to the preset initial angle, and finally make the clamping mechanism lock the electrode blade again.

[0018] Step S2: Real-time angle adjustment during surgery. If it is necessary to change the cutting angle during surgical cutting or hemostasis, hold the outer shell with one hand, operate the rotating sleeve to rotate it and temporarily fix it in the release position; then, turn the rotating ring to drive the electrode knife to rotate to the target angle.

[0019] Step S3: Angle locking and stability maintenance. After the angle adjustment is completed, release the temporary fixation of the rotating sleeve so that the clamping mechanism can re-clamp the polygonal sleeve and firmly lock the electrode knife at the new angle. After that, the overall stability of the shell is maintained when the cutting operation is performed.

[0020] Step S4: Continuous operation and adaptive adjustment. Repeat steps S2 and S3. Adjust the angle of the electrode knife in real time and independently according to the changes in the anatomical structure of the surgical area, and ensure that the power cord is not twisted throughout the process.

[0021] The beneficial effects of this invention are:

[0022] (1) In this invention, by working together with an independent clamping mechanism and a rotating mechanism, while keeping the electrode blade circumferentially fixed, the doctor can directly and independently adjust the angle of the electrode blade by simply turning the rotating ring, without having to rotate the entire cutting blade shell and the power cord connected to it. This fundamentally avoids fatigue damage and safety hazards caused by repeated twisting of the power cord. At the same time, it prevents the cutting blade from spontaneously rotating due to the twisting of the power cord after the doctor's hand loosens, and prevents the already adjusted electrode blade angle from shifting, thus avoiding adverse effects on the surgical effect and patient safety.

[0023] (2) The invention adopts a manual mechanical angle adjustment and locking design. The long lever is intuitive and convenient to operate. Doctors can quickly make fine adjustments to the angle with one hand during surgery without interrupting the surgical procedure or changing instruments, which improves surgical efficiency and the smoothness of operation.

[0024] (3) In this invention, by cooperating with the elastic element and the elastic telescopic rod insertion hole in the clamping mechanism, a stable switching and maintenance between the electrode knife angle adjustment state and the working locking state is achieved, which effectively prevents the spontaneous deviation of the electrode knife angle caused by the torque rebound of the power cord or the looseness of the hand, and ensures the accuracy and safety of the surgical process.

[0025] (4) In this invention, the buckle can provide physical reminders and barriers when doctors habitually try to rotate the entire instrument, guiding them to use the angle adjustment mechanism of this invention correctly, and further consolidating the operating procedure to avoid twisting the power cord;

[0026] (5) In this invention, the electrode body of the electrode knife slides in conjunction with the conductive sleeve, which not only realizes the angle adjustment function, but also allows for flexible adjustment of the electrode knife extension length, thus enhancing the overall adaptability of the instrument.

[0027] (6) In this invention, by sequentially setting a high-frequency energy selective conductive layer, a flexible ceramic insulating and heat-insulating layer and a low surface energy anti-adhesion layer on the outside of the electrode tip to form a composite functional coating, the selective conduction and aggregation of high-frequency energy, the effective suppression of heat diffusion and the significant reduction of tissue adhesion are achieved. Thus, while ensuring efficient and continuous cutting, the tissue interface temperature is controlled at a low level, reducing carbonization and reducing the thermal damage bandwidth. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the outer shell in this invention;

[0031] Figure 3 This is a schematic diagram of the clamping mechanism and the rotating mechanism in this invention;

[0032] Figure 4 This is a schematic diagram of the rotating mechanism structure in this invention;

[0033] Figure 5 This is a schematic diagram of the clamping mechanism structure in this invention;

[0034] Figure 6 This is a schematic diagram of the clamping mechanism from another perspective in this invention.

[0035] In the picture:

[0036] 1. Outer shell; 2. Control components; 21. PCB board; 22. Switch board; 23. Conductive sleeve; 3. Electrode blade; 31. Electrode body; 32. Blade head; 33. Insulating sleeve; 331. Polygonal sleeve; 4. Clamping mechanism; 41. Movable ring; 411. Inclined groove; 412. Pressure block; 42. Rotating sleeve; 421. Insertion hole; 43. Sleeve; 44. Sleeve rod; 441. Guide rod; 45. Clamping plate; 46. Fixing ring; 461. Baffle; 462. Elastic element; 5. Rotating mechanism; 51. Rotating ring; 52. Connecting rod; 53. Clamping plate; 54. Short lever; 55. Long lever; 6. Elastic telescopic rod; 7. Buckle ring; 8. Power cord; 9. Mounting cavity; 10. Rotating groove one; 11. Rotating groove two. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1-6 As shown, a low-temperature, non-stick plasma ablation cutting blade includes a housing 1, a control component 2, an electrode blade 3, and a power cord 8. The cutting blade also includes:

[0039] The clamping mechanism 4 has an installation cavity 9 inside the outer shell 1. The clamping mechanism 4 is installed in the installation cavity 9. The electrode knife 3 includes an electrode body 31, a cutting head 32 and an insulating sleeve 33. The insulating sleeve 33 is sleeved around the electrode body 31. The cutting head 32 is located at the end of the electrode body 31. The end of the insulating sleeve 33 is provided with a polygonal sleeve 331. The polygonal sleeve 331 is located in the installation cavity 9. The clamping mechanism 4 clamps the polygonal sleeve 331 so that the electrode knife 3 does not rotate.

[0040] The rotating mechanism 5 includes a rotating ring 51, connecting rods 52, and a clamping plate 53. The rotating ring 51 is rotatably mounted on the outer periphery of the outer shell 1. Several connecting rods 52 are provided on the inner side of the rotating ring 51. The connecting rods 52 pass through the outer shell 1 and extend into the mounting cavity 9. The end of the connecting rod 52 is provided with a clamping plate 53, which abuts against the corner of the polygonal sleeve 331. The surface of the outer shell 1 is provided with a rotating groove 10 for the connecting rods 52 to rotate. When the clamping mechanism 4 releases the clamping of the polygonal sleeve 331, the rotating mechanism 5 rotates and drives the polygonal sleeve 331 to rotate, causing the electrode knife 3 to rotate and change its angle.

[0041] The outer periphery of the rotating ring 51 is provided with several short levers 54 and several long levers 55, and the number of long levers 55 is the same as the number of connecting rods 52.

[0042] In practical application, the electrode blade 3 is clamped by the clamping mechanism 4 to prevent unexpected rotation of the electrode blade 3 during use. When it is necessary to adjust the angle of the electrode blade 3, the clamping mechanism 4 is released from its restriction on the electrode blade 3. Then, the doctor uses his finger to turn the rotating ring 51, causing several connecting rods 52 on the inner side of the rotating ring 51 to rotate along the rotating groove 10. This causes several clamping plates 53 to drive the polygonal sleeve 331 to rotate, which in turn causes the insulating sleeve 33 to drive the electrode blade 3 to rotate as a whole, thus adjusting the angle of the blade head 32 to adapt to the surgical cutting angle. After adjustment, the clamping mechanism is used to further adjust the electrode blade 3. The holding mechanism 4 clamps the electrode blade 3 and fixes it circumferentially. This ensures that the electrode blade 3 is circumferentially fixed during use, while also allowing for corresponding adjustment of the angle of the electrode blade 3. This prevents the power cord 8 from twisting due to the overall rotation of the cutting blade, thereby avoiding fatigue of the internal wires, wear or even breakage of the insulation layer of the power cord 8, which would affect the service life and electrical safety of the instrument. At the same time, it prevents the cutting blade from spontaneously rotating due to the twisting of the power cord 8 after the doctor's hand loosens, and prevents the already adjusted electrode blade angle from shifting, thus avoiding adverse effects on the surgical outcome and patient safety.

[0043] When adjusting the angle of the electrode knife 3, the doctor only needs to use a free finger to turn the short lever 54 or the long lever 55 on the rotating ring 51 to rotate the electrode knife 3. This can avoid interruption of the operation, ensure the smoothness of the operation, and thus ensure the surgical effect. At the same time, manual rotation does not require changing the structure of the polygonal sleeve 331 compared with the current electric rotation, thereby reducing the overall cost. At the same time, it is also convenient to install the electrode knife 3 without changing the structure of the polygonal sleeve 331.

[0044] By setting several long levers 55, the corners of the polygonal sleeve 331 can be positioned outside the outer casing 1, which facilitates the installation of the electrode knife 3 into the outer casing 1 and improves the efficiency of replacing the electrode knife 3.

[0045] The blade tip 32 is coated with a protective layer, which includes a high-frequency energy selective conductive layer, a flexible ceramic insulating and heat-insulating layer, and a tissue contact layer with low surface energy and high dielectric stability.

[0046] A high-frequency energy selective conductive layer, a flexible ceramic insulating and heat-insulating layer, and a low surface energy anti-sticking layer are sequentially disposed on the outside of the cutter head 32 from the inside out, and each functional layer forms an electrical-thermal-surface energy gradient distribution in the thickness direction; wherein:

[0047] The high-frequency energy selective conductive layer is made of carbon nanotubes, with CNT / metal nanowires as the main material. This is a conductive layer with nonlinear conductivity under high-frequency alternating electric fields. It has the characteristics of high DC resistance and reduced equivalent impedance at high frequencies (300–500kHz), which can avoid low-frequency leakage and ensure that high-frequency energy is concentrated at the cutting edge of the blade 32.

[0048] Flexible ceramic insulation is a ceramic-polymer composite insulation layer that combines flexibility, thermal shock resistance, and electrical insulation properties. The materials can be alumina, zirconium oxide, boron nitride, organosilicon, polyimide, and sol-gel, etc. Its thermal conductivity is ≤1.5W / m·K and dielectric strength is ≥15kV / mm. This can suppress the diffusion of heat to non-cutting areas in the local area of ​​the cutting head, thereby reducing the depth of thermal damage.

[0049] The tissue contact layer with low surface energy and high dielectric stability can be a PTFE / fluoropolymer anti-adhesion layer with a surface free energy ≤20mN / m and a contact angle ≥110°. It does not experience dielectric loss and temperature rise in a high-frequency electric field, thereby inhibiting protein and blood carbonization adhesion and reducing eschar formation.

[0050] By separating the high-frequency energy path and the heat diffusion path, the energy required for tissue cutting is concentrated rather than the overall temperature rise. In this way, the energy is concentrated at the tissue-blade interface, rather than the temperature rise of the entire blade body, thereby achieving low thermal damage cutting, preventing tissue adhesion, and improving energy utilization efficiency. This results in effects such as reduced cutting temperature, significantly reduced adhesion, and reduced thermal damage depth.

[0051] Furthermore, the clamping mechanism 4 includes a movable ring 41, a rotating sleeve 42, a sleeve 43, a sleeve rod 44, and a clamping plate 45. The rotating sleeve 42 is rotatably installed on the periphery of the outer shell 1. The movable ring 41 is provided with several pressure blocks 412 on its periphery. The pressure blocks 412 penetrate the outer shell 1 and are fixedly connected to the inner side of the rotating sleeve 42. Several inclined grooves 411 are opened on the surface of the movable ring 41, and the inclined grooves 411 are arranged in a ring array. Several sleeves 43 are installed in the mounting cavity 9, and the sleeves 43 are arranged in a ring array. The sleeve rod 44 is movably sleeved in the sleeve 43. The other end of the sleeve rod 44 is elastically rotatably installed with a clamping plate 45. The clamping plate 45 abuts against the side of the polygonal sleeve 331. The side of the sleeve rod 44 is provided with a guide rod 441. The sleeve 43 is provided with a through groove for the guide rod 441 to move. The guide rod 441 is sleeved in the inclined groove 411.

[0052] In practical application, when releasing the polygonal sleeve 331, the doctor rotates the rotating sleeve 42 with their fingers. The rotating sleeve 42 rotates the movable ring 41 through the pressure block 412. This causes the inclined groove 411 on the movable ring 41 to press the guide rod 441, causing the guide rod 441 to move along the inclined groove 411. The sleeve rod 44 slides along the sleeve 43, causing the sleeve rod 44 to slowly slide into the sleeve 43. This causes the clamping plate 45 to move away from the side of the polygonal sleeve 331. Once the space formed inside after several clamping plates 45 have moved synchronously is sufficient for the polygonal sleeve 331 to rotate, the rotation of the rotating sleeve 42 can be stopped. After the rotating mechanism 5 has adjusted the angle of the electrode knife 3, the rotating sleeve 42 is reversed, causing several clamping plates 45 to move towards the side of the polygonal sleeve 331 until the clamping plates 45 abut against the side of the polygonal sleeve 331. At this time, the electrode knife 3 is clamped and circumferentially fixed.

[0053] It should be noted that the clamping plate 45 is elastically rotatably mounted on the sleeve rod 44, so that the clamping plate 45 always remains perpendicular to the sleeve rod 44 when it is unrestrained. When the clamping plate 45 moves away from the side of the polygonal sleeve 331, several clamping plates 45 form a circular structure, so that when the polygonal sleeve 331 rotates, it is not easily constrained by the clamping plate 45, ensuring that the polygonal sleeve 331 can rotate smoothly. In addition, when the polygonal sleeve 331 rotates at a certain angle, the clamping plate 45 can always abut against the side of the polygonal sleeve 331, thereby improving the clamping stability.

[0054] Furthermore, the clamping mechanism 4 also includes a fixing ring 46, which is fixed inside the mounting cavity 9. The pressure block 412 slides along the fixing ring 46. The fixing ring 46 is provided with several baffles 461. An elastic element 462 is connected between the baffles 461 and the pressure block 412. The fixing ring 46 and the outer shell 1 are provided with a rotating groove 11 for the pressure block 412 to rotate.

[0055] An elastic telescopic rod 6 is installed on the outer casing 1, and an insertion hole 421 is provided on the rotating sleeve 42. When the rotating sleeve 42 rotates, the elastic telescopic rod 6 is inserted into the insertion hole 421.

[0056] In practical application, when the polygonal sleeve 331 is released from clamping, the rotating sleeve 42 rotates, and the pressure block 412 moves along the rotating groove 11. The pressure block 412 will squeeze the elastic element 462. When the clamping plates 45 move synchronously, the space formed inside can allow the polygonal sleeve 331 to rotate, and then the rotation of the rotating sleeve 42 can be stopped. At this time, the elastic telescopic rod 6 coincides with the insertion hole 421. Under the action of elastic force, the elastic telescopic rod 6 is inserted into the insertion hole 421, thereby fixing the rotating sleeve 42. At this time, the electrode knife 3 is adjusted by the rotating mechanism 5. When the angle is adjusted, the rotation of the electrode knife 3 is less constrained by the clamping plate 45; at the same time, during the operation, the angle of the electrode knife 3 can be manually adjusted at any time through the rotating mechanism 5, thereby improving the convenience of adjustment; when it is necessary to clamp the polygonal sleeve 331, the elastic telescopic rod 6 is pulled out from the insertion hole 421, and then the rotating sleeve 42 is released. Under the rebound action of several elastic elements 462, the rotating sleeve 42 rotates in the opposite direction, thereby causing several clamping plates 45 to move toward the side of the polygonal sleeve 331 and abut against it, thereby clamping the polygonal sleeve 331.

[0057] Furthermore, the outer casing 1 has a retaining ring 7 on its surface.

[0058] It should be noted that doctors will develop the habit of rotating the entire cutting blade to adjust the angle of the electrode blade 3 during actual use. With the buckle 7 in place, if a doctor inserts a finger into the buckle 7 during use, and instinctively tries to rotate the entire cutting blade to adjust the angle of the electrode blade 3, the cutting blade cannot rotate due to the restriction of the finger inside the buckle 7. This reminds the doctor to use the clamping mechanism 4 and the rotating mechanism 5 to adjust the angle of the electrode blade 3, further preventing the power cord 8 from twisting and being damaged, or causing the already adjusted electrode blade angle to shift.

[0059] Furthermore, the control component 2 includes a PCB board 21, a switch board 22, and a conductive sleeve 23. The PCB board 21 is installed inside the housing 1, the switch board 22 is installed on the PCB board 21, and the conductive sleeve 23 is connected to the PCB board 21. The electrode body 31 is movably fitted inside the conductive sleeve 23.

[0060] In practical application, the electrode body 31 is fitted inside the conductive sleeve 23. When the length of the electrode blade 3 needs to be adjusted, the doctor can manually clamp the insulating sleeve 33 and pull the electrode body 31 outward, thereby moving the electrode blade 3 outward. At the same time, the polygonal sleeve 331 moves within the mounting cavity 9. At this time, it is still restricted by the clamping mechanism 4 and the rotating mechanism 5, thus ensuring that the angle of the electrode blade 3 can still be adjusted normally after the length of the electrode blade 3 is adjusted.

[0061] Working principle: When the working angle of the electrode knife 3 needs to be adjusted, the doctor first uses his finger to turn the rotating sleeve 42. The rotating sleeve 42 drives the pressure block 412 fixed inside it to rotate along the rotating groove 11. The pressure block 412 drives the movable ring 41 to rotate, causing the inclined groove 411 on the surface of the movable ring 41 to press the guide rod 441 on the sleeve rod 44, forcing the sleeve rod 44 to slide inward along the sleeve 43, thereby causing the clamping plate 45 to disengage from the tight contact with the side of the polygonal sleeve 331, releasing the locked state of the clamping mechanism 4. At this time, the elastic telescopic rod 6 is inserted into the insertion hole 421 on the rotating sleeve 42 under the action of elasticity, temporarily fixing the rotating sleeve 42 and keeping the clamping plate 45 in the released state. Subsequently, the doctor uses another finger to turn the short lever 54 or the long lever 55 on the rotating ring 51 to make the rotating ring 51 rotate. The rotating ring 51 drives the clamping plate 53 at its end to rotate via the connecting rod 52. Since the clamping plate 53 abuts against the corner of the polygonal sleeve 331, it drives the polygonal sleeve 331, the insulating sleeve 33 fixed thereto, the electrode body 31, and the blade head 32 to rotate together, achieving precise adjustment of the electrode blade 3 angle. After the angle adjustment is complete, the doctor pulls the elastic telescopic rod 6 out of the insertion hole 421. Under the rebound force of the elastic element 462 on the fixing ring 46, the rotating sleeve 42 automatically rotates in the opposite direction, causing the movable ring 41 to reverse, thus releasing the pressure of the inclined groove 411 on the guide rod 441. The sleeve rod 44 extends outward, pushing the clamping plate 45 to press the side of the polygonal sleeve 331 again, achieving circumferential locking of the electrode blade 3. Throughout the adjustment process, the outer shell 1 and the power cord 8 remain stationary, effectively preventing the power cord 8 from twisting. When the working length of the electrode blade 3 needs to be adjusted, the doctor can directly hold the insulating sleeve 33 and pull or push the electrode body 31 out of the conductive sleeve 23. At this time, the polygonal sleeve 331 slides in the mounting cavity 9, and its angle adjustment and locking functions are not affected. The buckle 7 is designed to play a behavioral correction role in the early stage of operation to prevent misoperation.

[0062] A cutting method for a low-temperature non-stick plasma ablation cutting blade, the method being applied to the aforementioned low-temperature non-stick plasma ablation cutting blade, the method comprising the following steps:

[0063] Step S1: Preoperative preparation and angle pre-adjustment. According to the surgical requirements, before the cutting knife is powered on, operate the clamping mechanism 4 to release the lock on the electrode knife 3, then turn the rotating ring 51 of the rotating mechanism 5 to adjust the blade head 32 of the electrode knife 3 to the preset initial angle, and finally make the clamping mechanism 4 lock the electrode knife 3 again.

[0064] Step S2: Real-time angle adjustment during surgery. If it is necessary to change the cutting angle during surgical cutting or hemostasis, hold the outer shell 1 with one hand, operate the rotating sleeve 42 to rotate it and temporarily fix it in the release position; then, turn the rotating ring 51 to drive the electrode knife 3 to rotate to the target angle.

[0065] Step S3: Angle locking and stability maintenance. After the angle adjustment is completed, the temporary fixation of the rotating sleeve 42 is released, so that the clamping mechanism 4 re-clamps the polygonal sleeve 331 and firmly locks the electrode knife 3 at the new angle. After that, the outer shell 1 remains stable during the cutting operation.

[0066] Step S4: Continuous operation and adaptive adjustment. Repeat steps S2 and S3. Adjust the angle of the electrode knife 3 in real time and independently according to the changes in the anatomical structure of the surgical area, and ensure that the power cord 8 is not twisted throughout the process.

Claims

1. A low-temperature, non-stick plasma ablation cutting blade, comprising a housing (1), a control assembly (2), an electrode blade (3), and a power cord (8), characterized in that, The cutting blade also includes: The clamping mechanism (4) is provided in the housing (1), the mounting cavity (9) is provided in the mounting cavity (9), the clamping mechanism (4) is installed in the mounting cavity (9), the electrode blade (3) includes an electrode body (31), a blade head (32) and an insulating sleeve (33), the insulating sleeve (33) is sleeved around the electrode body (31), the blade head (32) is provided at the end of the electrode body (31), the end of the insulating sleeve (33) is provided with a polygonal sleeve (331), the polygonal sleeve (331) is located in the mounting cavity (9), and the clamping mechanism (4) clamps the polygonal sleeve (331) to prevent the electrode blade (3) from rotating; The clamping mechanism (4) includes a movable ring (41), a rotating sleeve (42), a sleeve (43), a sleeve rod (44), and a clamping plate (45). The rotating sleeve (42) is rotatably mounted on the periphery of the outer shell (1). Several pressure blocks (412) are provided on the periphery of the movable ring (41). The pressure blocks (412) penetrate the outer shell (1) and are fixedly connected to the inner side of the rotating sleeve (42). Several inclined grooves (411) are opened on the surface of the movable ring (41). The inclined grooves (411) are arranged in a ring array. The mounting cavity ( 9) Several sleeves (43) are installed inside, and the sleeves (43) are arranged in a ring array. A sleeve rod (44) is movably sleeved inside the sleeve (43). A clamping plate (45) is elastically rotatably installed at the other end of the sleeve rod (44). The clamping plate (45) abuts against the side of the polygonal sleeve (331). A guide rod (441) is provided on the side of the sleeve rod (44). A through groove is opened on the sleeve (43) for the guide rod (441) to move. The guide rod (441) is sleeved in the inclined groove (411). The rotating mechanism (5) includes a rotating ring (51), a connecting rod (52) and a clamping plate (53). The rotating ring (51) is rotatably installed on the periphery of the outer shell (1). Several connecting rods (52) are provided on the inner side of the rotating ring (51). The connecting rods (52) penetrate the outer shell (1) and extend into the mounting cavity (9). The end of the connecting rod (52) is provided with a clamping plate (53). The clamping plate (53) abuts against the corner of the polygonal sleeve (331). The surface of the outer shell (1) is provided with a rotating groove (10) for the connecting rods (52) to rotate. When the clamping mechanism (4) releases the clamping of the polygonal sleeve (331), the rotating mechanism (5) rotates and drives the polygonal sleeve (331) to rotate, so that the electrode knife (3) rotates and changes its angle.

2. The low-temperature non-stick plasma ablation cutting blade according to claim 1, characterized in that, The clamping mechanism (4) also includes a fixing ring (46), which is fixed inside the mounting cavity (9). The pressure block (412) slides along the fixing ring (46). The fixing ring (46) is provided with several baffles (461). An elastic element (462) is connected between the baffles (461) and the pressure block (412). The fixing ring (46) and the outer shell (1) are provided with a rotating groove (11) for the pressure block (412) to rotate.

3. The low-temperature non-stick plasma ablation cutting blade according to claim 2, characterized in that, An elastic telescopic rod (6) is installed on the outer shell (1), and an insertion hole (421) is provided on the rotating sleeve (42). When the rotating sleeve (42) rotates, the elastic telescopic rod (6) is inserted into the insertion hole (421).

4. The low-temperature non-stick plasma ablation cutting blade according to claim 3, characterized in that, The outer shell (1) is provided with a buckle (7) on its surface.

5. The low-temperature non-stick plasma ablation cutting blade according to claim 1, characterized in that, The outer periphery of the rotating ring (51) is provided with a number of short levers (54) and a number of long levers (55), the number of which is the same as the number of connecting rods (52).

6. The low-temperature non-stick plasma ablation cutting blade according to claim 1, characterized in that, The control component (2) includes a PCB board (21), a switch board (22) and a conductive sleeve (23). The PCB board (21) is installed inside the housing (1). The switch board (22) is installed on the PCB board (21). The conductive sleeve (23) is connected to the PCB board (21). The electrode body (31) is movably fitted inside the conductive sleeve (23).

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