Soft tissue high-frequency welding terminal

Abstract

The invention relates to the technical field of high-frequency surgical energy platforms, and discloses a soft tissue high-frequency welding terminal which comprises a holding handle, a welding head and a cleaning unit. The cleaning unit comprises a cleaning box arranged at the end of the holding handle, the cleaning box is hollow, a through hole is formed in the cleaning box in the axis direction of the welding head, a gap exists between the through hole and the welding head, a scraping piece is arranged in the gap between the through hole and the welding head, the end, close to the end of the welding head, of the scraping piece is a scraping part, and the other end of the scraping piece is a connecting part. A crack is formed in the scraping piece, the scraping piece is equally divided into an upper part and a lower part by the crack, and the scraping pieces on the upper side and the lower side have the tendency of being separated from each other. According to the high-frequency welding terminal for the soft tissue, through the scraping action that the cleaning unit and the scraping piece are firstly opened and stretched out and then closed and retracted, attachments on the welding head are cleaned into the scraping cavity, the situation that the attachments fall into a wound surface and are difficult to clean is avoided, and cleaning in an operation is guaranteed while the welding head is cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of high-frequency surgical energy platforms, and particularly to a high-frequency soft tissue welding terminal. Background Art

[0002] A high-frequency soft tissue welding terminal is a professional device used for soft tissue welding and closing in medical surgeries. It utilizes the thermal effect of high-frequency current to achieve functions such as tissue cutting, hemostasis, and welding. It is mainly applied in surgery, minimally invasive surgery, and tissue repair. Without traditional suture materials (such as sutures or nails), the heat generated by high-frequency current denatures and coagulates the protein molecules of soft tissues, thereby achieving the effects of tissue connection, hemostasis, and promoting healing.

[0003] In the patent with the publication number CN108523988A, a high-frequency electrocautery treatment device is disclosed, which mainly includes an electrocautery probe, an electrocautery handle, a conductive fluid, a suction device, and a control host. The electrocautery probe is mainly composed of an electrode terminal, an insulating insertion part, a connector, a support member, a connector, and a housing. The high-frequency electrocautery treatment device of the present invention not only makes improvements on the head, making the single cutting surface finer and the total cutting surface larger, ensuring cutting safety and cutting efficiency, but also is provided with a suction device, which can suck away the residues generated after cutting, ensuring the cleanliness and smoothness of the cutting surface and improving the cutting effect; a lighting source and a camera are also provided on the head, and the pictures and video materials are displayed through the image display screen of the control host, so that the cutting surface situation can be observed more intuitively, and various operation controls can be carried out through the control host.

[0004] The existing technology has the following defects: Electrode blockage or adhesion is a common problem, mainly manifested as tissue, blood, or other substances adhering to the electrode tip, resulting in a decrease in electrical conductivity and affecting the surgical effect. The following is a more in-depth analysis and explanation: 1. Cause Analysis The formation mechanism of electrode blockage or adhesion is usually related to the following factors: Tissue debris: During the contact between the electrode tip and the myocardium, mechanical damage to the tissue may occur, resulting in the adhesion of tissue debris.

[0005] Blood clot: During the surgery, a local temperature increase (such as during radiofrequency ablation) easily activates the coagulation process, forming a blood clot attached to the electrode surface.

[0006] Protein deposition: Proteins in plasma (such as fibrinogen) are prone to coagulation in a high-temperature environment, forming an attachment layer.

[0007] Electrode material problem: The surface of some low-quality electrode materials is not smooth, making it easy to adsorb foreign substances or tissue residues.

[0008] Inflammatory response: The release of radiofrequency energy causes local myocardial tissue inflammation, leading to fibrin deposition or platelet aggregation.

[0009] 2. Impact on the surgery Reduced radiofrequency ablation efficiency: The obstruction of current conduction results in the ineffective transfer of energy to the target tissue.

[0010] Poor ablation effect may lead to multiple ablations, prolonging the operation time and even causing complications.

[0011] Surgery interruption: If the blockage is severe, cleaning or replacing the electrode is required, which may force the surgery to be suspended, prolonging the operation time and increasing the risk. Summary of the invention

[0012] In view of the above problems in the prior art, a high-frequency soft tissue welding terminal is proposed.

[0013] This application provides a high-frequency soft tissue welding terminal, and its purpose is to provide a welding terminal that can scrape the adherents on the knife head during the operation to ensure the radiofrequency effect of the knife head.

[0014] The technical solution of the present invention is: A high-frequency soft tissue welding terminal includes a holding handle, an electrode arranged in the holding handle, and a welding head arranged at one end of the electrode. The welding head extends outside the holding handle, and a cleaning unit for scraping the welding head is also arranged in the holding handle; The cleaning unit includes a cleaning box arranged at the end of the holding handle. The cleaning box is hollow inside and is provided with a through hole along the axis direction of the welding head. There is a gap between the through hole and the welding head. A scraping member is arranged in the gap between the through hole and the welding head. One end of the scraping member close to the end of the welding head is a scraping part, and the scraping part is in contact with the hole wall of the through hole and the welding head. A scraping cavity is arranged in the scraping part. The other end of the scraping member away from the end of the welding head is a connecting part. One end of the connecting part is connected to the scraping part, and the other end passes through the through hole and extends into the holding handle. There is a gap between the connecting part and the through hole. A first wedge-shaped ring is fixed near the holding handle at the connecting part. A second wedge-shaped ring is slidably arranged in the through hole. A first limiting ring and a second limiting ring are respectively fixed near the left and right openings of the through hole. The second wedge-shaped ring slides between the first limiting ring and the second limiting ring. The first wedge-shaped ring and the second wedge-shaped ring are in contact through an inclined surface. A crack is arranged on the scraping member, and the crack divides the scraping member into upper and lower parts equally. The crack extends into the holding handle, and the upper and lower parts of the scraping member on both sides of the crack have a tendency to separate from each other; The cleaning unit includes a transmission component connected to the connecting part for controlling the extension and retraction of the scraping member.

[0015] With the above solution, by setting the cleaning unit, when the scraping member extends out from the through hole, it is separated into upper and lower parts. Until the first wedge ring moves to the first limit ring and is pressed against the second wedge ring, the upper and lower parts of the scraping member are closed. During the retraction process of the scraping member, the adhesions on the welding head are scraped off. Until the first wedge ring moves to the second limit ring, the second wedge ring is limited and separated from the first wedge ring, completing one scraping action. Such a scraping action where the scraping member first opens and extends, then closes and retracts, clears the attachments on the welding head into the scraping cavity, preventing the attachments from falling into the wound surface and being difficult to clean, and ensuring intraoperative cleanliness while cleaning the welding head.

[0016] Further, the transmission assembly includes a button slot provided in the holding handle, an operating button slidably provided in the button slot, a spring abutted against the button slot and the operating button, a connecting ring provided at one end of the connecting portion away from the welding head, a fixing rod provided on the connecting ring, a spiral thread provided on the outer wall of the fixing rod, a rotating column sleeved on the fixing rod, a toothed ring provided on the outer wall of the rotating column, and a rack provided on the operating button. The rack meshes with the toothed ring. The rotating column is rotatably provided in the button slot through a pair of support plates, and a spiral groove matching the spiral thread is provided in the rotating column.

[0017] With the above solution, by setting the transmission assembly, the action of pressing down the operating button is transmitted as the extending action of the scraping member, and the spring drives the operating button to reset, which is transmitted as the retracting action of the scraping member. That is, by pressing the operating button once, the scraping member completes one scraping action of opening and extending, then closing and retracting.

[0018] Further, a pair of first sewage outlets are provided on the scraping portion, and a second sewage outlet corresponding to the first sewage outlet is provided inside the cleaning box. The first sewage outlet and the second sewage outlet communicate the inside of the cleaning box and the scraping cavity.

[0019] With the above solution, through the first sewage outlet and the second sewage outlet, the scraped attachments are collected into the cleaning box, increasing the storage space for the attachments.

[0020] Further, a convex block is provided at the joint of the scraping portion and the connecting portion. The convex block abuts against the edge of the second sewage outlet. The side of the convex block close to the second sewage outlet is an inclined surface, and the side away from the first sewage outlet is an arc surface.

[0021] With the above solution, by setting the convex block, the adhesions in the scraping cavity are easily collected into the cleaning box through the inclined surface. At the same time, when the scraping member retracts, the arc surface makes it easy for the scraping member to retract into the through hole.

[0022] Further, a check valve piece is provided at the second sewage outlet.

[0023] With the above solution, through the check valve piece, the adhesions in the cleaning box are prevented from flowing back into the scraping cavity.

[0024] Further, the inclination angle of the contact surface between the first wedge ring and the second wedge ring is 70°.

[0025] With the above solution, by setting a large inclination angle, the contact area between the first wedge ring and the second wedge ring is increased, and the frictional force between the first wedge ring and the second wedge ring is increased, so that it is not easy to separate after the first wedge ring and the second wedge ring are in extrusion contact, and only the second wedge ring can be blocked by the second limiting ring for separation.

[0026] Further, scraping lines are provided on the contact surface between the scraping part and the welding head.

[0027] With the above solution, through the scraping lines, the scraping effect of the scraping part on the attachments on the welding head is increased.

[0028] Further, the connection part between the cleaning box and the holding handle is a detachable bottom cover, and pins are provided on the bottom cover, and the pins are connected to the holding handle.

[0029] With the above solution, by setting a detachable cleaning box, after the operation is over, the cleaning box is detached from the holding handle, and the bottom cover of the cleaning box is opened to collect the attachments collected in the cleaning box.

[0030] Advantages of the present invention: By setting the cleaning unit, when the scraping member extends out of the through hole, it is separated into upper and lower parts. Until the first wedge ring moves to the first limiting ring and is extruded with the second wedge ring, the upper and lower parts of the scraping member are closed. During the retraction process of the scraping member, the adhesion on the welding head is scraped off. Until the first wedge ring moves to the second limiting ring, the second wedge ring is limited and separated from the first wedge ring, completing a scraping action. Such a scraping action in which the scraping member first opens and extends, and then closes and retracts cleans the attachments on the welding head into the scraping cavity, avoiding the attachments from falling onto the wound surface and being difficult to clean, and ensuring intraoperative cleanliness while cleaning the welding head. Description of the drawings

[0031] Figure 1 Is a perspective view of the high-frequency soft tissue welding terminal of the present invention; Figure 2 Is a top view of the high-frequency soft tissue welding terminal of the present invention; Figure 3 Of the present invention Figure 2 Cross-sectional view taken along line A-A in; Figure 4 Of the present invention Figure 3 Enlarged view of the welding head part in; Figure 5 Is a structural diagram of the transmission component in the high-frequency soft tissue welding terminal of the present invention; Figure 6 Of the present invention Figure 5Other perspectives; Figure 7 This is a perspective view of the cleaning box in the high-frequency soft tissue welding terminal of the present invention; Figure 8 This is a perspective view of the scraping member in the high-frequency soft tissue welding terminal of the present invention; Figure 9 This is a view of the scraping member in the extended state in the high-frequency soft tissue welding terminal of the present invention; Figure 10 This is a view of the scraping member when it extends to the end of the welding head in the high-frequency soft tissue welding terminal of the present invention; Figure 11 This is a view of the scraping member in the retracted state in the high-frequency soft tissue welding terminal of the present invention.

[0032] In the figure: 1. Holding handle; 2. Electrode; 3. Welding head; 4. Cleaning box; 5. Through hole; 6. Scraping member; 7. Scraping part; 8. Scraping cavity; 9. Connecting part; 10. First wedge ring; 11. Second wedge ring; 12. First limiting ring; 13. Second limiting ring; 14. Crack; 15. Button groove; 16. Operating button; 17. Spring; 18. Connecting ring; 19. Fixed rod; 20. Thread; 21. Rotating column; 22. Gear ring; 23. Rack; 24. Support plate; 25. First sewage outlet; 26. Second sewage outlet; 27. Protrusion; 28. Inclined surface; 29. Arc surface; 30. Check valve piece; 31. Scraping pattern; 32. Bottom cover; 33. Pin. Detailed implementation manners

[0033] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0034] Example, refer to Figures 1-11, for an embodiment of the present invention, a high-frequency soft tissue welding terminal is provided, which includes a holding handle 1, an electrode 2 disposed in the holding handle 1, and a welding head 3 disposed at one end of the electrode 2. The welding head 3 extends outside the holding handle 1. A cleaning unit for scraping the welding head 3 is further disposed in the holding handle 1; the cleaning unit includes a cleaning box 4 disposed at the end of the holding handle 1. The cleaning box 4 is hollow inside and is provided with a through hole 5 along the axial direction of the welding head 3. There is a gap between the through hole 5 and the welding head 3. A scraping member 6 is disposed in the gap between the through hole 5 and the welding head 3. One end of the scraping member 6 close to the end of the welding head 3 is a scraping portion 7. The scraping portion 7 is in contact with the hole wall of the through hole 5 and the welding head 3. A scraping cavity 8 is disposed in the scraping portion 7. One end of the scraping member 6 away from the end of the welding head 3 is a connecting portion 9. One end of the connecting portion 9 is connected to the scraping portion 7, and the other end extends into the holding handle 1 through the through hole 5. There is a gap between the connecting portion 9 and the through hole 5. A first wedge-shaped ring 10 is fixed near the holding handle 1 on the connecting portion 9. A second wedge-shaped ring 11 is slidably disposed in the through hole 5. A first limiting ring 12 and a second limiting ring 13 are respectively fixed near the left and right openings of the through hole 5. The second wedge-shaped ring 11 slides between the first limiting ring 12 and the second limiting ring 13. The first wedge-shaped ring 10 and the second wedge-shaped ring 11 are in contact through an inclined surface. A crack 14 is disposed on the scraping member 6. The crack 14 divides the scraping member 6 into upper and lower parts equally. The crack 14 extends into the holding handle 1. The upper and lower parts of the scraping member 6 on both sides of the crack 14 tend to separate from each other; the cleaning unit includes a transmission assembly, which is connected to the connecting portion 9 and is used to control the extension and retraction of the scraping member 6.

[0035] In this embodiment, the current flows from the electrode 2 through the welding head 3 and then into the human body, reaches the negative electrode plate through the tissue, and forms a closed loop. The high-frequency current generates heat at the tip of the electrode 2, heating the tissue to protein denaturation, thereby realizing cutting, hemostasis, and welding of the tissue. The shape of the welding head 3 is flat to meet the requirements of welding the tissue. The scraping member 6 is made of a non-conductive material. The upper and lower parts divided by the crack 14 are always in an opening trend. Since the size of the scraping portion 7 fits the through hole 5, when the scraping portion 7 retracts into the through hole 5, the upper and lower parts of the scraping member 6 are in a closed state. When the scraping portion 7 extends outside the through hole 5, the upper and lower parts of the scraping member 6 are in an opening state. The contact and cooperation of the first wedge-shaped ring 10 and the second wedge-shaped ring 11 are to ensure that when the upper and lower parts of the scraping member 6 extend to the end of the welding head 3 in an opening state, the upper and lower parts of the scraping member 6 retract in a closed state.

[0036] When designing the cleaning unit of the high-frequency soft tissue welding terminal, a scraping member 6 that can be separated up and down is adopted, which has the following several remarkable advantages: Improve cleaning efficiency: The upper and lower separable scraping part 6 can dynamically adjust the opening and closing angle during the cleaning process. It opens when extended, covering a larger range, avoiding direct contact with the welding head 3 in the non-working state, reducing wear or resistance; it closes after reaching the outermost end of the welding head 3, being able to precisely clamp and clean the key area of the welding head 3, effectively removing dirt or residues. Such a design ensures that the scraping part 6 acts accurately during work, providing a comprehensive and efficient cleaning of the welding head 3.

[0037] Avoid damage to the welding head 3: The welding head 3 is the core component of the high-frequency surgical energy platform. If the cleaning mechanism remains clamped throughout the process, it may cause wear or deformation to the surface of the welding head 3. By adopting the design of opening when extended, closing for cleaning, and separating after retracting, the scraping part 6 only directly contacts the welding head 3 at necessary stages, which can reduce the damage to the surface material of the welding head 3 and extend the life of the welding head 3.

[0038] Reduce frictional resistance: Opening the scraping part 6 when extended, avoiding unnecessary friction with the welding head 3 or other components, can reduce the movement resistance, lower the power consumption requirement of the mechanism, and thus improve the stability and reliability of the overall operation.

[0039] Optimize the cleaning effect: The action design when closing enables the scraping part 6 to more precisely adapt to the shape of the welding head 3, especially for cleaning key areas such as the outermost end of the welding head 3. When the scraping part 6 closes, it can provide sufficient pressure to remove stains, coagulated tissues or other attachments, improving the cleaning effect.

[0040] Facilitate mechanical maintenance: The upper and lower separable design helps the scraping part 6 to be more easily disassembled and maintained in the non-working state. If there is wear or failure in the cleaning mechanism, the damaged part of the scraping part 6 can be replaced separately without the need to replace the entire cleaning mechanism, reducing the maintenance cost.

[0041] Improve safety: The scraping part 6 only closes at necessary stages, greatly reducing the risk of accidental injury to the welding head 3. At the same time, it can also prevent the cleaning mechanism from getting stuck or damaged due to misoperation during the retraction process, improving the safety and reliability of the system operation.

[0042] Adopting this design of the upper and lower separable and dynamically adjustable scraping part 6 can take into account high-efficiency cleaning, protection of the welding head 3, smooth movement and mechanical safety. It is a very reasonable and targeted optimization design idea, suitable for precision medical equipment such as high-frequency soft tissue welding terminals with high requirements for cleaning and maintenance.

[0043] Refer to Figure 3 、 Figure 5 、 Figure 6, the transmission assembly includes a button slot 15 provided in the holding handle 1, an operating button 16 slidably arranged in the button slot 15, a spring 17 abutted against the button slot 15 and the operating button 16, a connecting ring 18 provided at one end of the connecting portion 9 away from the welding head 3, a fixing rod 19 provided on the connecting ring 18, a thread 20 provided on the outer wall of the fixing rod 19, a rotating column 21 sleeved on the fixing rod 19, a gear ring 22 provided on the outer wall of the rotating column 21, and a rack 23 provided on the operating button 16. The rack 23 meshes with the gear ring 22. The rotating column 21 is rotatably arranged in the button slot 15 through a pair of support plates 24, and a spiral groove matching the thread 20 is provided in the rotating column 21.

[0044] In this embodiment, a pair of support plates 24 are fixed on the inner wall of the button slot 15, and the rotating column 21 is rotatably arranged on the pair of support plates 24. When in use, the operating button 16 is pressed, the operating button 16 drives the rack 23 to move, the rack 23 drives the rotating column 21 to rotate through meshing with the gear ring 22, and the spiral groove in the rotating column 21 cooperates with the thread 20 to move the fixing rod 19 towards the welding head 3 direction, driving the scraping member 6 to extend.

[0045] By arranging the transmission assembly, the action of pressing the operating button 16 downward is transmitted to the extending action of the scraping member 6, and the spring 17 drives the operating button 16 to reset, which is transmitted to the retracting action of the scraping member 6, that is, pressing the operating button 16 once, the scraping member 6 completes a scraping action of opening and extending and then closing and retracting.

[0046] Refer to Figure 4 and Figure 8 , a pair of first sewage outlets 25 are provided on the scraping portion 7, a second sewage outlet 26 is provided in the cleaning box 4 corresponding to the first sewage outlet 25, and the first sewage outlet 25 and the second sewage outlet 26 communicate the inside of the cleaning box 4 and the scraping cavity 8.

[0047] In this embodiment, the sewage outlets are provided at one end close to the welding head 3. Through the first sewage outlet 25 and the second sewage outlet 26, the scraped attachments are collected into the cleaning box 4, increasing the storage space for the attachments.

[0048] Refer to Figure 4 , a convex block 27 is provided at the joint of the scraping portion 7 and the connecting portion 9. The convex block 27 abuts against the edge of the second sewage outlet 26. One side of the convex block 27 close to the second sewage outlet 26 is an inclined surface 28, and the side away from the first sewage outlet 25 is an arc surface 29.

[0049] By arranging the convex block 27, the adhesions in the scraping cavity 8 are easily collected into the cleaning box 4 through the inclined surface 28. At the same time, when the scraping member 6 retracts, the arc surface 29 easily enables the scraping member 6 to retract into the through hole 5.

[0050] Refer to Figure 4The second sewage outlet 26 is provided with a check plate 30.

[0051] In this embodiment, the non-return sheet 30 is made of elastic material, can be turned toward the inside of the cleaning box 4 and has the ability to recover. The non-return sheet 30 prevents the adhered matter in the cleaning box 4 from flowing back into the scraping chamber 8.

[0052] Reference Figure 4 The inclination angle of the contact surface between the wedge ring 10 and the wedge ring 2 11 is 70°.

[0053] By setting a large inclination angle, the contact area between wedge ring 10 and wedge ring 2 11 is increased, and the friction between wedge ring 10 and wedge ring 2 11 is increased, so that wedge ring 10 and wedge ring 2 11 are not easy to separate after being squeezed into contact, and can only be separated by limiting ring 2 13 to block wedge ring 2 11.

[0054] Reference Figure 8 The contact surface between the scraping portion 7 and the welding head 3 is provided with a scraping line 31 .

[0055] In this embodiment, the scraping lines 31 are made of elastic material to ensure that the welding head 3 is not scratched during scraping. A plurality of scraping lines 31 are arranged in parallel to ensure that the friction force is locally increased in the scraping part 7. The scraping lines 31 increase the scraping effect of the scraping part 7 on the attachments on the welding head 3.

[0056] Reference Figure 7 The connection between the cleaning box 4 and the holding handle 1 is a detachable bottom cover 32, on which a pin 33 is provided, and the pin 33 is connected to the holding handle 1. By providing a detachable cleaning box 4, after the operation is completed, the cleaning box 4 is detached from the holding handle 1, and the bottom cover 32 of the cleaning box 4 is opened to collect the attached matter collected in the cleaning box 4.

[0057] Specific reference Figures 9-11 , is the working principle of the present invention: By setting a cleaning unit, when the scraper 6 extends out of the through hole 5, it is separated into upper and lower parts, until the wedge ring 10 moves to the position limiting ring 12 and squeezes the wedge ring 2 11, the upper and lower parts of the scraper 6 are closed, and the scraper 6 scrapes the adhesion on the welding head 3 during the retraction process, until the wedge ring 10 moves to the position limiting ring 2 13, the wedge ring 2 11 is limited and separated from the wedge ring 10, and a scraping action is completed. In this way, the scraper 6 first opens and extends, and then closes and retracts the scraping action, and the adhesion on the welding head 3 is cleaned into the scraping cavity 8, so as to prevent the adhesion from falling into the wound surface and being difficult to clean, and ensure the cleaning during the operation while cleaning the welding head 3.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-frequency soft tissue welding terminal, comprising a holding handle (1), an electrode (2) arranged in the holding handle (1), and a welding head (3) arranged at one end of the electrode (2), wherein the welding head (3) extends outside the holding handle (1), and is characterized in that: A cleaning unit for scraping the soldering head (3) is also provided inside the holding handle (1). The cleaning unit includes a cleaning box (4) arranged at the end of the holding handle (1). The interior of the cleaning box (4) is hollow and is provided with a through hole (5) along the axis direction of the soldering head (3). There is a gap between the through hole (5) and the soldering head (3). A scraping member (6) is arranged in the gap between the through hole (5) and the soldering head (3). One end of the scraping member (6) close to the end of the soldering head (3) is a scraping part (7). The scraping part (7) is in contact with the inner wall of the through hole (5) and the soldering head (3). A scraping cavity (8) is arranged inside the scraping part (7). The other end of the scraping member (6) away from the end of the soldering head (3) is a connecting part (9). One end of the connecting part (9) is connected to the scraping part (7), and the other end extends into the holding handle (1) through the through hole (5). There is a gap between the connecting part (9) and the through hole (5). A first wedge-shaped ring (10) is fixed near the holding handle (1) on the connecting part (9). A second wedge-shaped ring (11) is slidably arranged in the through hole (5). A first limiting ring (12) and a second limiting ring (13) are respectively fixed near the left and right openings of the through hole (5). The second wedge-shaped ring (11) slides between the first limiting ring (12) and the second limiting ring (13). The first wedge-shaped ring (10) and the second wedge-shaped ring (11) are in contact through inclined surfaces. A crack (14) is arranged on the scraping member (6). The crack (14) divides the scraping member (6) into upper and lower equal parts. The crack (14) extends into the holding handle (1). The upper and lower parts of the scraping member (6) on both sides of the crack (14) tend to separate from each other. The cleaning unit includes a transmission assembly connected to the connecting part (9) for controlling the extension and retraction of the scraping member (6).

2. The high-frequency soft tissue welding terminal according to claim 1, wherein: The transmission assembly includes a button groove (15) arranged in the holding handle (1), an operation button (16) slidably arranged in the button groove (15), a spring (17) abutted against the button groove (15) and the operation button (16), a connecting ring (18) arranged at the end of the connecting part (9) away from the soldering head (3), a fixing rod (19) arranged on the connecting ring (18), a spiral thread (20) arranged on the outer wall of the fixing rod (19), a rotating column (21) sleeved on the fixing rod (19), a toothed ring (22) arranged on the outer wall of the rotating column (21), and a rack (23) arranged on the operation button (16). The rack (23) is meshed with the toothed ring (22). The rotating column (21) is rotatably arranged in the button groove (15) through a pair of support plates (24). A spiral groove matching the spiral thread (20) is arranged inside the rotating column (21).

3. The high-frequency soft tissue welding terminal according to claim 1, characterized in that: A pair of first sewage outlets (25) are arranged on the scraping part (7). A second sewage outlet (26) is arranged in the cleaning box (4) corresponding to the first sewage outlets (25). The first sewage outlets (25) and the second sewage outlets (26) communicate the interior of the cleaning box (4) and the scraping cavity (8).

4. The high-frequency soft tissue welding terminal according to claim 3, characterized in that: A bump (27) is provided at the junction of the scraping part (7) and the connecting part (9). The bump (27) abuts against the edge of the second sewage outlet (26). The side of the bump (27) close to the second sewage outlet (26) is an inclined surface (28), and the side away from the first sewage outlet (25) is an arc surface (29).

5. The high-frequency soft tissue welding terminal according to claim 3, characterized in that: A check valve piece (30) is provided at the second sewage outlet (26).

6. The high-frequency soft tissue welding terminal according to claim 1, characterized in that: The inclination angle of the contact surface between the first wedge ring (10) and the second wedge ring (11) is 70°.

7. The high-frequency soft tissue welding terminal according to claim 1, characterized in that: Scraping lines (31) are provided on the contact surface between the scraping part (7) and the welding head (3).

8. The high-frequency soft tissue welding terminal according to claim 3, characterized in that: The connection between the cleaning box (4) and the holding handle (1) is a detachable bottom cover (32). Plug pins (33) are provided on the bottom cover (32), and the plug pins (33) are connected to the holding handle (1).

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