Plasma electrode with dredging function and dredging method thereof

Abstract

The application discloses a kind of plasma electrodes with dredging function, including operating handle, electrode stem and water inlet pipe, also including electrode head, electrode head angle adjusting part, suction pipe, dredging part and control part, electrode head is hinged in electrode stem end, electrode head angle adjusting part is arranged in electrode stem end and connects electrode head with control part, and the ablation angle of electrode head can be controlled and adjusted by control part and electrode head angle adjusting part;Suction pipe is arranged in electrode stem, dredging part is arranged in suction pipe, dredging part is connected with control part, dredging part can be controlled to expand, and move in suction pipe, dredging suction pipe.Advantages, hinge electrode head on electrode stem, electrode head angle adjusting part arranged in electrode stem end adjusts the angle of electrode head according to need, suitable for ablation in different positions, convenient to use, dredging part arranged in suction pipe is used to dredge suction pipe when suction pipe is blocked, simple structure, convenient to use, ensure normal use of plasma knife.

Description

Technical Field

[0001] This invention specifically relates to a plasma electrode with unblocking function and a method for unblocking the same. Background Technology

[0002] The working principle of a plasma ablation device is to emit radio frequency energy through a power source, which is then used to electrolyze a NaCl solution via a bipolar ablation head. This generates a thin plasma layer on the ablation head containing active free radicals, namely Na+, OH+, H+, O+, and e. Among these, the OH+ free radicals and e free electrons are highly active and can cut and ablate tissue. The temperature is maintained between 40℃ and 70℃. The thermal effect (>60°) generated by the bipolar ablation head causes the cells in the tissue to coagulate, become inactive, and die, thus achieving intraoperative hemostasis.

[0003] The electrodes used in ENT adenoidectomy are conventional disposable electrodes. These electrodes generally have a downward curve for ablation. However, due to the different positions of the adenoids, when operating the plasma knife, the operator must perform an upward lifting motion on the electrode. This can easily cause wrist fatigue for the surgeon over a long period of time, affecting the surgical process and making the operation inconvenient.

[0004] Furthermore, in the current use of plasma scalpels, for the removal of some small tissues, the suction hole connected to the plasma scalpel can use negative pressure to suction out the small tissues. However, since some tissues are slightly larger, they may block the front of the suction tube. As a result, when the suction tube becomes blocked, the plasma scalpel needs to be removed, and a cleaning rod needs to be inserted into the suction tube to clear the blockage before the surgery can continue, which prolongs the operation time.

[0005] The publicly disclosed technical solution, application number CN201910824988.6, entitled "A Radiofrequency Plasma Surgical Electrode," describes a surgical electrode rod, a surgical electrode handle, a surgical electrode cable, a surgical electrode suction tube, and a surgical electrode infusion tube. One end of the surgical electrode handle is connected to the surgical electrode rod, and the other end is connected to the surgical electrode cable, the surgical electrode suction tube, and the surgical electrode infusion tube respectively through three flexible tubes. The surgical electrode suction tube and the surgical electrode infusion tube are each equipped with a backwashing device.

[0006] As shown in technical solution CN201910824988.6, this technical solution utilizes a backwashing device. The specific structure is as follows: the middle part of the surgical electrode suction tube and the surgical electrode drip tube are each equipped with a capsule, and the rear part of the capsule is equipped with a flow regulating valve. The capsule is used to backwash and unclog the electrode head blockage, which can achieve the unblocking effect. However, the liquid flushed out during the flushing process will remain in the patient's body, affecting the surgical field of vision. On the other hand, it may also cause infection, so it is not applicable. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is that the electrode head angle of the existing plasma knife mentioned in the background art is fixed and it is not suitable for tonsillectomy.

[0008] The second technical problem to be solved by the present invention is the problem mentioned in the background art that the front end of the existing ion knife is difficult to clean after blockage, which affects normal surgery.

[0009] To solve the first technical problem mentioned above, a plasma electrode with unblocking function is proposed. This is achieved through the following technical solution: A plasma electrode with unblocking function includes an operating handle, an electrode rod, and a water inlet pipe. One end of the electrode rod is mounted on the operating handle, and one end of the water inlet pipe is located inside the operating handle and connected to an external water supply device. The other end is inserted into the electrode rod. The electrode electrode is characterized by further including an electrode head, an electrode head angle adjustment part, a suction tube, an unblocking part, and a control part. The electrode head is hinged to the end of the electrode rod. The electrode head angle adjustment part is located at the end of the electrode rod and connects the electrode head to the control part. The ablation angle of the electrode head can be controllably adjusted through the control part and the electrode head angle adjustment part. The suction tube is located inside the electrode rod and connected to the electrode head. The unblocking part is located inside the suction tube and connected to the control part. The unblocking part can be controllably expanded under the action of the control part and moves within the suction tube to unblock the blockage at the front end of the suction tube.

[0010] In a preferred embodiment of the present invention, the electrode head includes a base and an outer tube. The outer tube is sleeved on the outside of the base, and the base is movably hinged to the electrode rod. The base is designed to facilitate the adjustment of the angle of the electrode head by hinged connection between the base and the electrode rod, making it convenient to use.

[0011] In a preferred embodiment of the present invention, the electrode head angle adjustment unit includes a gear and rack mechanism and a rack mounting slide. The rack mounting slide is mounted on the electrode rod, and the rack in the gear and rack mechanism is slidably mounted in the rack mounting slide. The gear in the gear and rack mechanism is mounted on the electrode head, and the electrode head can be controlled to rotate along the hinge under the action of the gear and rack mechanism. The electrode head angle adjustment unit facilitates the adjustment of the electrode head angle through the electrode head angle adjustment unit, making it convenient to adjust different angles of the electrode head as needed. It is easy to use and has strong applicability.

[0012] In a preferred embodiment of the present invention, the rack mounting slide includes a groove, a first pulley, a first return spring, and a first pull rope. The rack in the gear and rack mechanism is slidably mounted in the groove. The first pulley is located at one end of the rack mounting slide. The first return spring connects the rack to the rack mounting slide. The first pull rope passes around the first pulley and connects the rack to the control unit. The control unit and the first pull rope enable the controllable rotation of the electrode head. The rack mounting slide facilitates the movement of the rack in the gear and rack mechanism within the slide, thereby facilitating the adjustment of the electrode head angle and making it convenient to use.

[0013] In a preferred embodiment of the present invention, the unblocking section includes a functional tube, an unblocking plate, and a base plate. The functional tube is connected to the suction tube, the unblocking plate is hinged to the base plate, and the base plate is disposed inside the functional tube. The base plate can be controllably moved along the functional tube to unblock the suction tube. The unblocking section facilitates the use of the unblocking plate in the unblocking section to push the tissue blocking the suction tube to move, thereby unblocking the suction tube and making it convenient to use.

[0014] In a preferred embodiment of the present invention, the base plate includes a movable slide, a connecting rod, and a second pull rope. The movable slide is slidably mounted on the base plate. The base plate and the movable slide are hinged to the unblocking plate via the connecting rod. The second pull rope connects the movable slide and the control unit. The unblocking plate can be unfolded and moved within the functional tube by the control unit and the second pull rope to unclog the blocked suction tube. The arrangement of the base plate and the movable slide facilitates the unfolding and closing of the unblocking plate by controlling the movable slide, making it convenient to use.

[0015] In a preferred embodiment of the present invention, the suction tube includes a flexible section, and the suction tube is connected to the electrode head through the flexible section. This arrangement ensures that the suction tube can perform normal suction even after the angle of the suction head is adjusted.

[0016] In a preferred embodiment of the present invention, a sealing portion is provided on the electrode head. The sealing portion includes a first sealing cover and a second sealing cover. The first sealing cover and the second sealing cover are disposed at the hinge of the electrode head and the electrode rod, respectively connecting the electrode head and the electrode rod, and sealing the hinge of the electrode head and the electrode rod. The sealing portion ensures the sealing performance of the electrode head and the electrode rod at the hinge, ensuring that the device can be used normally.

[0017] To address the second technical problem mentioned above, a method for unblocking a plasma electrode with unblocking function is also proposed; this is achieved through the following technical solution, including the following steps:

[0018] S1: When the suction tube is blocked and needs to be cleared, first use the control unit to adjust the angle of the electrode head so that the flexible section at the front end of the suction tube connected to the electrode head is straight.

[0019] S2: Use the second control knob in the control unit to adjust the unblocking section and unfold the unblocking plate until the unblocking plate is fully unfolded;

[0020] S3: Continue to rotate the second control knob to release the limiting component in the unblocking section from the substrate. At this time, the substrate slides along the functional tube toward the electrode head, thereby driving the unfolded unblocking plate to move and clear the blockage.

[0021] S4: After clearing the blockage, turn the second control knob in the opposite direction. At this time, the substrate slides in the opposite direction along the functional tube until it engages with the limiting component in the unblocking section. Then continue to turn the second control knob until the unblocking plate is retracted, thus completing the unblocking.

[0022] S5: Adjust the electrode head to a suitable working angle using the control unit to continue the work.

[0023] The beneficial effects of this invention compared to the prior art are:

[0024] The technical solution of this invention hinges the electrode head to the electrode rod. The angle of the electrode head can be adjusted as needed using the electrode head angle adjustment part and control part set at the end of the electrode rod. It is suitable for plasma ablation in different positions and is easy to use. In addition, the unblocking part set in the suction tube can be used to unblock the suction tube when it is blocked. The structure is simple, easy to use and ensures the normal use of the plasma knife. Attached Figure Description

[0025] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0026] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 (After adjusting the electrode head angle);

[0027] Figure 3 This is a three-dimensional schematic diagram of the electrode head;

[0028] Figure 4 This is a three-dimensional schematic diagram of the electrode head angle adjustment section;

[0029] Figure 5 Exploded view of the electrode head angle adjustment section;

[0030] Figure 6 This is a partial cross-sectional view of the electrode head angle adjustment section;

[0031] Figure 7 A three-dimensional schematic diagram of the unblocking area;

[0032] Figure 8 This is a schematic diagram of the unblocking plate after it has been unfolded (including the suction tube).

[0033] Figure 9 This is a schematic diagram of the unblocking strip after it has been coiled (including the suction tube).

[0034] Figure 10 Explosion diagram of the dredging section;

[0035] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0036] Figure 12 A three-dimensional schematic diagram of the control unit;

[0037] Figure 13 This is a three-dimensional schematic diagram of the sealing part;

[0038] Explanation of reference numerals in the attached drawings: 1-Operating handle, 2-Electrode rod, 3-Electrode head, 31-Base, 32-Outer tube, 33-Suction hole, 34-Water outlet, 35-Electrode wire, 4-Electrode head angle adjustment part, 41-Gear and rack mechanism, 42-Rack mounting slide, 43-Slider, 44-Wire hole, 45-Slide groove, 46-First pulley, 47-First return spring, 48-First pull rope, 5-Suction tube, 51-Leaning opening, 6-Unblocking part, 601-Functional tube, 602-Unblocking plate, 603-Base plate, 304-Limiting component, 605-Movement 606-Drain head, 607-Moving slide, 608-Slide groove, 609-Pull rope fixing plate, 610-Magnet, 611-Allowing groove, 612-First connecting rod, 613-Second connecting rod, 614-Second pull rope, 615-Second return spring, 616-Limit plug, 617-Elastic connecting clip, 7-First control unit, 71-First worm gear mechanism, 72-First control knob, 8-Second control unit, 81-Second worm gear mechanism, 82-Second control knob, 9-Sealing unit, 91-First sealing cover, 92-Second sealing cover. Detailed Implementation

[0039] The following will refer to the appendices in the embodiments of the present invention. Figure 1-13 The technical solutions in the embodiments of the present invention will be described in detail below. Example

[0040] like Figure 1 , 2 As shown in Figures 4 and 7, a plasma electrode with a dredging function includes an operating handle 1, an electrode rod 2, an electrode head 3, an electrode head angle adjustment part 4, a suction tube 5, a dredging part 6, a control part, and a sealing part 9.

[0041] One end of the electrode rod 2 is located inside the operating handle 1, and the electrode head 3 is hinged to the other end of the electrode rod 2. The electrode head angle adjustment part 4 is located inside the electrode rod 2 and connected to the electrode head 3. The angle of the electrode head 3 can be adjusted as needed through the electrode head angle adjustment part 4. The suction tube 5 is located inside the electrode rod 2. One end of the suction tube 5 is connected to the electrode head 3, and the other end passes through the electrode rod 2 and is connected to an external negative pressure suction device. The unblocking part 6 is located inside the suction tube 5. The unblocking part 6 can unblock the easily clogged front section of the suction tube 5. The control part is located inside the operating handle 1. The control part can control the angle adjustment of the electrode head 3 and the unblocking part 6 to unblock the suction tube 5. The sealing part 9 is located at the hinge of the electrode rod 2 and the electrode head 3. The sealing part 9 can seal the connection between the two to prevent dirt from entering the electrode rod 2.

[0042] The operating handle 1 is made of plastic. The main function of the operating handle 1 is to serve as a carrier for mounting the electrode rod 2, and it is also convenient for the operator to hold.

[0043] Electrode rod 2 is an existing device, specifically a hollow circular metal tube made of stainless steel, which can be used directly.

[0044] The control unit includes a first control unit 7 and a second control unit 8. The first control unit 7 is connected to the electrode head angle adjustment unit 4, and the rotation angle of the electrode head 3 can be adjusted through the first control unit 7. The second control unit 8 is connected to the unblocking unit 6, and the unblocking unit 6 can be controlled to unblock the suction tube 5 through the second control unit 8.

[0045] like Figure 1 , 2 As shown in Figure 3, the electrode head 3 includes a base 31 and an outer tube 32, with the outer tube 32 fitted over the outside of the base 31.

[0046] The base 31 is a cylindrical platform made of ceramic. The outer diameter of the base 31 is equal to the inner diameter of the electrode rod 2. Two circular through holes are opened perpendicular to the end face of the base 31. One of the holes with a slightly larger diameter is named the suction hole 33, and the suction tube 5 is connected to the suction hole 33. The other hole with a slightly smaller diameter is named the water outlet hole 34, and the water outlet hole 34 is connected to the water inlet pipe that passes through the electrode rod. The other end of the water inlet pipe is connected to an external water supply device. Physiological saline can be continuously supplied to the electrode head 3 through the water inlet pipe, thereby realizing the excitation of plasma. The water supply pipe and the water supply device connected to the water supply pipe on the plasma knife are both existing technologies that can be used directly. In addition, the connection between the suction tube 5 and the suction hole 33 and the connection between the water outlet hole 34 and the water inlet pipe are also existing technologies that can be used directly.

[0047] To facilitate plasma excitation, an electrode wire 35 is fixed on the base 31 near the water outlet 34. The electrode wire 35 spans across the water outlet 34 and is connected to a power supply cable passing through the electrode rod 2. The electrode wire 35 can electrolyze the saline solution sprayed through the water outlet 34 to generate plasma.

[0048] To facilitate the installation of the base 31, a rectangular boss protrudes from the other end of the base 31 away from the electrode wire 35. A hinge hole is provided on the boss, and a hinge rod is integrally fixed in the hinge hole. The base 31 can rotate along the hinge rod, and the base 31 is hinged to the end of the electrode rod 2 through this hinge rod.

[0049] To protect the base 31, a circular tube is placed over the base 31. This tube is called the outer tube 32. The diameter of the outer tube 32 is the same as the diameter of the electrode rod 2. The electrode wire 35 in the base 31 extends beyond the outer tube 32 to ensure that the electrode head 3 can be ablated normally.

[0050] The outer tube 32 protects the outer wall of the base 31 from damage caused by external forces.

[0051] like Figure 4 ,5 As shown in Figure 6, in order to facilitate the adjustment of the angle of the electrode head 3, an electrode head angle adjustment part 4 is also installed at the end of the electrode rod 2.

[0052] The electrode head angle adjustment unit 4 includes a gear and rack mechanism 41 and a rack mounting slide 42. The rack mounting slide 42 is installed at the end of the inner side wall of the electrode rod 2. The gear in the gear and rack mechanism 41 is fixed to the hinge rod on the electrode head 3 by a pin. The rack in the gear and rack mechanism 41 is slidably installed in the rack mounting slide 42. The rack and gear cooperate with each other. The sliding of the rack can drive the gear and the electrode head 3 connected to it to rotate, thereby realizing the adjustment of the angle of the electrode head 3.

[0053] The rack mounting slide 42 is a platform with a rectangular cross-section. A rectangular groove is formed on the surface of the rack mounting slide 42. The rack in the gear and rack mechanism 41 is inserted into this groove and can move along this groove. In order to restrict the movement of the rack and prevent the rack from falling out of the rack mounting slide 42, two rectangular grooves 45 are recessed on the inner sidewalls of the grooves in the rack mounting slide 42. At the same time, two sliders 43 are fixed to the rack in the gear and rack mechanism 41 with screws. The sliders 43 can cooperate with the grooves 45, so that the rack can move stably in the rack mounting slide 42 and will not fall out.

[0054] To facilitate control of the movement of the rack in the gear and rack mechanism 41, a pulley is fixed to the end of the rack mounting slide 42 with a pin. This pulley is named the first pulley 46. At the same time, a wire hole 44 is opened on the side of the rack mounting slide 42 where the first pulley 46 is mounted. A pull rope is inserted into the wire hole 44. This pull rope is named the first pull rope 48. One end of the first pull rope 48 passes through the wire hole 44, goes around the first pulley 46 and connects to the rack. The other end is connected to the first control unit 7. The first control unit 7 can pull the first pull rope 48 to move, thereby driving the rack to slide in the rack mounting slide 42. Because the rack meshes with the gear, the gear will rotate synchronously, thereby realizing the adjustment of the angle of the electrode head 3.

[0055] In this embodiment, the angle adjustment range of the gear rack mechanism 41 to the electrode head 3 is preferably 60°. Therefore, the gear in the gear rack mechanism 41 can be a gear with half teeth.

[0056] To ensure the stability of the first pull rope 48 as it passes over the first pulley 46, the first pulley 46 is designed to prevent slippage.

[0057] After the rack moves within the rack mounting slide 42, a reset spring is installed in the groove of the rack mounting to facilitate the rack's reset. This reset spring is named the first reset spring 47. One end of the first reset spring 47 is connected to the rack mounting slide 42, and the other end is connected to the rack. When the rack moves to adjust the angle of the electrode head 3, the first reset spring 47 is stretched by force.

[0058] Regarding the connection between the rack mounting slide 42 and the electrode rod 2, the rack mounting slide 42 is fixed to the inner wall of the end of the electrode rod 2 by screws.

[0059] Definition: In this embodiment, one end of the plasma knife electrode head 3 is the front end, and the other end of the operating handle 1 is the rear end.

[0060] like Figure 2 , 8 As shown in Figure 12, the suction tube 5 is a circular hollow tube. The suction tube 5 is a three-section tube, including a flexible section at the front end, a rigid section in the middle, and a flexible section at the rear end. The three sections are connected to each other. The difference between the flexible section at the front end and the rigid section in the middle is inside the electrode rod 2. The front end of the suction tube 5 is the part that is most easily blocked during use. The flexible section at the rear end is placed inside the operating handle 1 and connected to the external negative pressure suction device.

[0061] The flexible sections at the front and rear ends of the suction tube 5 are made of silicone tubing, which is an existing device. The rigid section in the middle of the suction tube 5 is made of 304 stainless steel. The length of the flexible section at the front end of the suction tube 5 is less than the length of the unblocking plate 602 in the unblocking part 6. Thus, when the unblocking plate 602 moves to the front end of the rigid section of the suction tube 5, the end of the unblocking plate 602 can pass through the flexible section at the front end of the suction tube 5 and insert into the suction hole 33 in the electrode head 3, pushing out the tissue blocking the suction tube 5 and completing the unblocking.

[0062] To facilitate the installation of the unblocking unit 6, a rectangular notch is provided on the inner wall of the rigid section in the middle section of the suction pipe 5. This notch is named the clearance opening 51. The clearance opening 51 is provided on the inner wall of the rigid section and extends through the rigid section along its length. The functional pipe 601 in the unblocking unit 6 is installed at this clearance opening 51 and is integrally connected with the suction pipe 5.

[0063] like Figure 7 , 8 As shown in 9, 10 and 11, the unblocking part 6 includes a functional tube 601, an unblocking plate 602, a base plate 603 and a limiting component 604. The functional tube 601 is fixed at the relief opening 51 of the rigid section of the suction tube. The unblocking plate 602 is hinged to the base plate 603. The base plate 603 is inserted into the functional tube 601 and can move within the functional tube 601. The limiting component 604 is connected to the base plate 603 and the functional tube 601 and is detachably connected.

[0064] The functional tube 601 is a rectangular metal square tube made of 304 stainless steel. Both ends of the functional tube 601 are closed. The substrate 603 can be inserted into the functional tube 601 and move inside the functional tube 601. The functional tube 601 is welded to the outer wall of the rigid section of the suction tube and is located at the relief port 51, which is closed.

[0065] The substrate 603 is a metal plate with a certain thickness and an "I" shaped cross-section. The substrate 603 can be stably inserted into the functional tube 601. A movable slide 607 is fitted in the middle of the substrate 603. One end of the unclogging piece 602 is hinged to the substrate 603, and the other end is hinged to the movable slide 607. Pulling the movable slide 607 can control the expansion and contraction of the unclogging piece 602.

[0066] The movable slide 607 is a rectangular metal stage. In order to facilitate its movement along the substrate 603 in conjunction with the substrate 603, rectangular grooves are recessed on two sides in the middle of the substrate 603. These grooves are called slide grooves 608. At the same time, protrusions that can cooperate with slide grooves 608 are protruding on both sides of the movable slide 607. The movable slide 607 can slide linearly along the substrate 603 under the action of slide grooves 608 and protrusions.

[0067] The unblocking plate 602 is a metal plate with a rectangular cross-section. An arc-shaped unblocking head 606 is bent at one end of the unblocking plate 602. When unblocking, the unblocking head 606 first contacts the blocked tissue to unblock the blockage.

[0068] To facilitate the installation of the drain cleaning plate 602, two hinge platforms are integrally fixed on the surface of the drain cleaning plate 602. The two hinge platforms are spaced apart on the drain cleaning plate 602. At the same time, a hinge platform is integrally provided on the surface of the movable slide 607 and one end of the base plate 603. The drain cleaning plate 602 can be connected to the movable slide 607 and the base plate 603 through these hinge platforms.

[0069] In order to prevent the drain cleaning plate 602 from clogging the suction tube 5 and affecting the normal operation of the suction tube 5, the drain cleaning plate 602 can be unfolded and retracted. When unfolded, the drain cleaning plate 602 can unclog the blocked suction tube 5. When retracted, the drain cleaning plate 602 does not occupy the internal space of the suction tube 5 and does not affect the normal use of the suction tube 5.

[0070] To facilitate the unfolding of the unblocking plate 602, one end of the unblocking plate 602 is hinged to the movable slide 607 via a connecting rod, and the other end is hinged to the base plate 603 via a connecting rod. The connecting rod hinged to the movable slide 607 is named the first connecting rod 612, and the connecting rod hinged to the base plate 603 is named the second connecting rod 613. The length of the first connecting rod 612 is greater than the length of the second connecting rod 613. Thus, after the movable slide 607 slides along the base plate 603 and unfolds the unblocking plate 602, the unblocking plate 602 will form an inclined angle under the action of the first connecting rod 612 and the second connecting rod 613, which facilitates the unblocking head 606 to unblock the suction tube 5.

[0071] In order to facilitate the movement of the unblocking plate 602 within the functional tube 601 after it is unfolded, a rectangular notch is provided on the surface of the functional tube 601. This notch is named the moving port 605. The moving port 605 is opened along the extension direction of the functional tube 601. After the unblocking plate 602 is unfolded, the first connecting rod 612 is located at the moving port 605.

[0072] To control the unfolding of the unblocking plate 602, two rectangular plates protrude outwards from the surface of the movable slide 607. The two rectangular plates are distributed front and back, and are named the pull rope fixing plate 609. At the same time, a pulley is hinged to the front end of the functional tube 601, and is named the second pulley. One end of the second pull rope 614 is connected to the pull rope fixing plate 609 at the front end, then passes around the second pulley, then passes through the functional tube 601 and wraps around the second control part 8, and then passes through the functional tube 601 and connects to the pull rope fixing plate 609 at the rear end of the movable slide 607. The second control part 8 can drive the movable slide 607 to slide, first unfolding the unblocking plate 602, and then moving the base plate 603 after the unblocking plate 602 is unfolded, thus completing the unblocking of the suction tube 5.

[0073] To ensure the stability of the second pull rope 614 on the second pulley, the second pulley is designed to prevent derailment. This is existing technology and will not be described in detail here.

[0074] To facilitate control of the retraction of the draining plate 602, a rectangular groove is recessed in the surface of the substrate 603, named the clearance groove 611. The movable slide 607 spans the clearance groove 611, and a spring is fixed in the clearance groove 611, named the second return spring 615. One end of the second return spring 615 is fixed to the substrate 603, and the other end is fixed to the movable slide 607. When the movable slide 607 moves and drives the draining plate 602 to unfold, the second return spring 615 is stretched by force.

[0075] When the unblocking plate 602 is unfolded, to prevent it from retracting due to accidental reverse rotation of the second control unit 8 and affecting normal unblocking, two magnets 610 are fixed to the front end of the movable slide 607 using screws. Preferably, the magnets 610 are strong neodymium magnets. Simultaneously, a corresponding magnet 610 is fixed to the front end of the middle section of the substrate 603. When the movable slide 607 slides along the slide groove 610 and the unblocking plate 602 is unfolded, the two sets of magnets 610 attract each other, and the two sets... The force of the magnet 610 is greater than the elastic force of the second return spring 615. That is, after the magnets 610 are attracted together, the second return spring 615 cannot drive the drain plate 602 to retract. When the two sets of magnets 610 are released from attraction, the second pull rope 614 pulls the movable slide 607 to reset, completing the retraction of the drain plate 602. After the drain plate 602 is retracted, the second return spring 615 resets and pulls the drain plate 602 to prevent the drain plate 602 from accidentally unfolding.

[0076] In order to ensure that the substrate 603 moves after the unblocking plate 602 unfolds during the unblocking process of the suction tube 5, a limiting component 604 is provided at the rear end of the substrate 603 and the rear end of the functional tube 601. The limiting component 604 includes a limiting plug 616 and an elastic connecting clip 617. The elastic connecting clip 617 is a plastic clip and includes two arc-shaped limiting arms. The two arc-shaped limiting arms form a clip with a small opening at the end and a large opening in the middle. The limiting plug 616 can be inserted into the clip through the opening at the end. Since the limiting arms of the elastic connecting clip 617 have a certain elasticity, when the limiting plug 616 is inserted into the elastic connecting clip 617, the limiting arms of the elastic connecting clip 617 will undergo elastic deformation. A certain force needs to be applied to release the engagement between the elastic connecting clip 617 and the limiting plug 616.

[0077] The limiting plug 616 is fixed to the end face of the rear end of the substrate 603 with screws, and the elastic connecting card 617 is fixed to the rear end of the functional tube 601 with screws.

[0078] Regarding the first pull rope 48 and the second pull rope 614, existing high-strength, small-diameter molybdenum wires can be preferred.

[0079] like Figure 1 , 2 As shown in Figure 12, the control unit includes a first control unit 7 and a second control unit 8, which are installed inside the operating handle 1.

[0080] The first control unit 7 includes a first worm gear mechanism 71 and a first control knob 72. The first worm gear mechanism 71 includes a worm wheel and a worm. The worm wheel is inserted into the inside of the operating handle 1 through a mounting rod passing through the center. The worm wheel can rotate freely along the mounting rod. Regarding how to insert the mounting rod into the inside of the operating handle 1, an insertion hole can be opened inside the operating handle. This is existing technology and will not be described in detail here. In the first worm gear mechanism 71, the worm and the worm wheel are the same and are both installed in the operating handle through a mounting rod. The worm wheel and the worm are in cooperation.

[0081] The first control knob 72 is a round plastic knob. The first control knob 72 is coaxially connected to the worm gear in the first control unit 7. Rotating the first control knob 72 can drive the worm gear to rotate synchronously. In order to facilitate the operation of the first control knob 72, a part of the first control knob 72 is exposed on the operating handle 1, so that the user can easily rotate the first control knob 72.

[0082] To facilitate the connection between the first pull rope 48 and the worm gear of the first control unit 7, two circular limiting plates protrude outward on the mounting rod of the worm gear. The first pull rope 48 is wound around the mounting rod and located between the two limiting plates.

[0083] The second control unit 8 includes a second worm gear mechanism 81 and a second control knob 82. The second worm gear mechanism 81 includes a worm wheel and a worm. The worm wheel is inserted into the inside of the operating handle 1 through a mounting rod passing through the center. The worm wheel can rotate freely along the mounting rod. Regarding how to insert the mounting rod into the inside of the operating handle 1, an insertion hole can be opened inside the operating handle. This is existing technology and will not be described in detail here. The worm in the second worm gear mechanism 81 is the same as the worm wheel. Both are installed in the operating handle through a mounting rod, and the worm wheel and the worm are in cooperation.

[0084] The second control knob 82 is a round plastic knob. The second control knob 82 is coaxially connected to the worm gear in the second control unit 8. Rotating the second control knob 82 can drive the worm gear to rotate synchronously. In order to facilitate the operation of the second control knob 82, a part of the second control knob 82 is exposed on the operating handle 1, so that the user can easily rotate the second control knob 82.

[0085] To facilitate the connection between the second pull rope 614 and the worm gear of the second control unit 8, two circular limiting plates protrude outward on the mounting rod of the worm gear. The second pull rope 614 is wound around the mounting rod and located between the two limiting plates.

[0086] like Figure 1 , 2 As shown in Figure 13, in order to facilitate sealing of the hinge joint between the electrode rod 2 and the electrode head 3, a sealing part 9 is provided at the hinge joint between the electrode rod 2 and the electrode head 3. The sealing part 9 can seal the connection between the two to prevent dirt from entering the electrode rod 2.

[0087] The sealing part 9 includes a first sealing cover 91 and a second sealing cover 92. The first sealing cover 91 and the second sealing cover 92 are made of high-temperature resistant and waterproof plastic cloth. The overall shape is similar to the existing unfoldable and foldable accordion cover. One end of the first sealing cover 91 and the second sealing cover 92 are fixed to the end face of the outer tube 32 in the electrode head 3 with glue, and the other end is fixed to the end face of the front end of the electrode rod 2 with glue. When the electrode head 3 rotates relative to the electrode rod 2, the first sealing cover 91 and the second sealing cover 92 unfold and fold accordingly to seal the hinge and prevent blood or saline from entering the electrode rod 2.

[0088] To prevent the exposed metal of the outer tube 32 of the electrode head 3 from burning the patient's occipital region and other target tissues during adenoidectomy, an anti-scalding coating is applied to the outer tube 32 of the electrode rod 2 and the electrode head 3. The anti-scalding coating is an existing coating that meets medical standards and can be used directly with existing devices.

[0089] Regarding the connection between the first pull rope 48 and the first control unit 7: After the first pull rope 48 is connected to the rack in the gear and rack mechanism 41, it passes around the first pulley 46 and is wound around the mounting rod on the worm gear in the first control unit 7. Rotating the first control knob 72 can drive the worm gear in the first control unit 7 to rotate, thereby adjusting the length of the first pull rope 48 and thus adjusting the angle of the electrode head 3.

[0090] Regarding the connection between the second pull rope 614 and the second control unit 8: The second pull rope 614 is wound in reverse from the middle to both ends around the worm gear mounting rod of the second worm gear mechanism 81. One end of the second pull rope 614, which is led out from the worm gear mounting rod in the second worm gear mechanism 81, is inserted into the functional tube 601 and connected to the pull rope fixing plate 609 at the rear end of the movable slide 607. The other end is inserted into the functional tube 601, passes around the second pulley at the front end of the functional tube 601, and is connected to the pull rope fixing plate 609 at the front end of the movable slide 607. In this way, when the second control knob 82 is rotated clockwise, a portion of one end of the second pull rope 614 will be wound around the worm gear mounting rod of the second worm gear mechanism 81, and a portion of the other end of the second pull rope 614 will also be released, thereby controlling the sliding of the base plate 603 within the functional tube 601.

[0091] Regarding the unfolding and retraction process of the unblocking section 6:

[0092] When unfolding: First, rotate the second control knob 82 clockwise. At this time, the second pull rope 614 pulls the moving slide 607 along the slide groove 608. At this time, under the action of the first connecting rod 612 and the second connecting rod 613, the unblocking piece 602 gradually unfolds until the moving slide 607 slides to the key point and the two sets of magnets 610 are attracted. At this time, the unblocking piece 602 is fully unfolded. Continue to rotate the second control knob 82 clockwise. At this time, the moving slide 607 will drive the base plate 603 to move until the limit plug 616 is pulled out from the elastic connecting card 617. At this time, continue to rotate the second control knob 82 clockwise. This will drive the base plate 603 after the unblocking piece 602 is unfolded to move in the functional tube 601 to unblock the front section of the suction tube 5.

[0093] During the closing process: After unblocking is completed, rotate the second control knob 82 counterclockwise. At this time, the second pull rope 614 pulls the moving slide 607. Since there is a magnet 610 between the moving slide 607 and the base plate 603, the second pull rope 614 will drive the base plate 603 to move towards the rear end of the functional tube 601 until the limit plug 616 contacts the elastic connecting card 617. At this time, continuous force will release the attraction between the magnets 610, and the unblocking plate 602 will retract and reset. Then, continue to rotate the second control knob 82 counterclockwise, and the second pull rope 614 will continue to apply force, pulling the base plate 603 backward until the limit plug 616 is inserted into the elastic connecting card 617, completing the limit and thus completing the closing process.

[0094] Regarding the retraction of the drain cleaner 602, the order in which the drain cleaner 602 is retracted first or the limit plug 616 is inserted into the elastic connecting card 617 has no effect on the retraction. The order of the two does not affect the normal retraction process or the next use.

[0095] In addition, plasma surgical electrodes are a mature existing technology with low cost. They are generally disposable and can be discarded after use without the need to consider subsequent internal cleaning. The plasma surgical electrode in this application is also a disposable product.

[0096] The method for unblocking a plasma electrode with unblocking function according to the present invention specifically includes the following steps:

[0097] S1: When the suction tube is blocked and needs to be cleared, first use the control unit to adjust the angle of the electrode head 3 so that the flexible section at the front end of the suction tube 5 connected to the electrode head 3 is straight.

[0098] S2: Use the second control knob 82 in the control unit to adjust the unblocking part 6 and unfold the unblocking plate 602 until the unblocking plate 602 is fully unfolded.

[0099] S3: Continue to rotate the second control knob 82 to release the limiting component 604 in the unblocking section 6 from limiting the substrate 603. At this time, the substrate 603 slides along the functional tube 601 toward the electrode head 3, thereby driving the unfolded unblocking piece 602 to move and clear the blockage.

[0100] S4: After the blockage is cleared, rotate the second control knob 82 in the opposite direction. At this time, the substrate 603 slides in the opposite direction along the functional tube 601 until it engages with the limiting component 604 in the unblocking part 6. Then continue to rotate the second control knob 82 until the unblocking piece 602 is retracted, thus completing the unblocking.

[0101] S5: Adjust the electrode head 3 to a suitable working angle using the control unit to continue the work.

[0102] The adjustment process of the electrode head 3 angle in this embodiment is as follows: When it is necessary to adjust the angle of the electrode head 3, firstly, rotate the first control knob 72 clockwise. At this time, the first pull rope 48 drives the rack in the gear and rack mechanism 41 to move. At this time, the first return spring 47 is stretched by force. At the same time, the movement of the rack drives the gear connected to the electrode head 3 to rotate, thereby realizing the adjustment of the electrode head 3 angle. When it is necessary to reset the angle of the electrode head 3 after adjustment, rotate the first control knob 72 in the opposite direction. At this time, the first pull rope 48 wound on the first worm gear mechanism 71 is gradually released. The first return spring 47 pulls the rack in the gear and rack mechanism 41 to reset, thereby driving the electrode head 3 angle to reset.

[0103] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A plasma electrode with unblocking function, comprising an operating handle (1), an electrode rod (2), and a water inlet pipe, wherein one end of the electrode rod (2) is disposed on the operating handle (1), one end of the water inlet pipe is disposed inside the operating handle (1) and connected to an external water supply device, and the other end is inserted into the electrode rod (2), characterized in that: It also includes an electrode head (3), an electrode head angle adjustment part (4), a suction tube (5), a drainage part (6) and a control part. The electrode head (3) is hinged to the end of the electrode rod (2). The electrode head angle adjustment part (4) is set at the end of the electrode rod (2) to connect the electrode head (3) and the control part. The ablation angle of the electrode head (3) can be controlled by the control part and the electrode head angle adjustment part (4). The suction tube (5) is set inside the electrode rod (2) and connected to the electrode head (3). The unblocking part (6) is embedded in the suction tube (5) through the clearance port (51) set on the inner side wall of the suction tube (5). The unblocking part (6) does not occupy the internal space of the suction tube (5) additionally. The unblocking part (6) is connected to the control part. The unblocking part (6) can be controlled to unfold under the action of the control part and move inside the suction tube (5) to unblock the blockage in the front section of the suction tube (5). The unblocking section (6) includes a functional tube (601), an unblocking plate (602), and a base plate (603). The functional tube (601) is connected to the suction tube (5). The unblocking plate (602) is hinged to the base plate (603). The unblocking plate (602) can be unfolded and retracted in a controllable manner through the control section. The retracted unblocking plate (602) does not occupy additional internal space of the suction tube (5). The base plate (603) is disposed inside the functional tube (601). The base plate (603) can be moved in a controllable manner along the functional tube (601) to unblock the suction tube (5). The base plate (603) includes a movable slide (607), a connecting rod, and a second pull rope (614). The movable slide (607) is slidably mounted on the base plate (603). The base plate (603) and the movable slide (607) are hinged to the unblocking plate (602) through the connecting rod. The second pull rope (614) connects the movable slide (607) to the control unit. The unblocking plate (602) can be unfolded and moved in the functional tube (601) through the control unit and the second pull rope (614) to unclog the blocked suction tube (5).

2. The plasma electrode with unblocking function according to claim 1, characterized in that: The electrode head (3) includes a base (31) and an outer tube (32). The outer tube (32) is fitted over the outside of the base (31), and the base (31) is movably hinged to the electrode rod (2).

3. The plasma electrode with unblocking function according to claim 1, characterized in that: The electrode head angle adjustment part (4) includes a gear and rack mechanism (41) and a rack mounting slide (43). The rack mounting slide (43) is set on the electrode rod (2). The rack in the gear and rack mechanism (41) is slidably installed in the rack mounting slide (43). The gear in the gear and rack mechanism (41) is set on the electrode head (3). The electrode head (3) can be controlled to rotate along the hinge under the action of the gear and rack mechanism (41).

4. The plasma electrode with unblocking function according to claim 3, characterized in that: The rack mounting slide (43) includes a groove (45), a first pulley (46), a first return spring (47), and a first pull rope (48). In the gear rack mechanism (41), the rack is slidably mounted in the groove (45). The first pulley (46) is located at one end of the rack mounting slide (43). The first return spring (47) connects the rack to the rack mounting slide (43). The first pull rope (48) passes around the first pulley (46) and connects the rack to the control unit. The control unit and the first pull rope (48) drive the electrode head (3) to rotate controllably.

5. The plasma electrode with unblocking function according to claim 1, characterized in that: The suction tube (5) includes a flexible section, through which the suction tube (5) is connected to the electrode head (3).

6. The plasma electrode with unblocking function according to claim 1, characterized in that: A sealing part (9) is provided on the electrode head (3). The sealing part (9) includes a first sealing cover (91) and a second sealing cover (92). The first sealing cover (91) and the second sealing cover (92) are provided at the hinge of the electrode head (3) and the electrode rod (2), respectively connecting the electrode head (3) and the electrode rod (2) and sealing the hinge of the electrode head (3) and the electrode rod (2).

7. A method for unblocking a plasma electrode with unblocking function according to any one of claims 1-6, characterized in that: Includes the following steps: S1: When the suction tube is blocked and needs to be cleared, first use the control unit to adjust the angle of the electrode head (3) so that the flexible section at the front end of the suction tube (5) connected to the electrode head (3) is straight. S2: Use the second control knob (82) in the control unit to adjust the unblocking part (6) and unfold the unblocking plate (602) until the unblocking plate (602) is fully unfolded; S3: Continue to rotate the second control knob (82) to release the limiting component (604) in the unblocking section (6) from limiting the substrate (603). At this time, the substrate (603) slides along the functional tube (601) toward the electrode head (3), thereby driving the unfolded unblocking piece (602) to move and clean the blockage. S4: After clearing the blockage, rotate the second control knob (82) in the opposite direction. At this time, the substrate (603) slides in the opposite direction along the functional tube (601) until it engages with the limiting component (604) in the unblocking part (6). Then continue to rotate the second control knob (82) until the unblocking piece (602) is finished to complete the unblocking. S5: Adjust the electrode head (3) to a suitable working angle using the control unit, and then continue the work.

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