Disposable deep liver bipolar coagulation needle

Abstract

The application belongs to the technical field of electric coagulation hemostasis, and particularly relates to a disposable deep liver bipolar electrocoagulation needle, which comprises an electrocoagulation needle body, a locking bushing, a movable needle adjusting mechanism, a fixed needle assembly and an automatic indicating assembly. The fixed needle assembly comprises a fixed frame and a turnover part, the turnover part is rotationally arranged on one side of the fixed frame, and the movable needle adjusting mechanism comprises an automatic clamping assembly, an adjusting assembly, a transmission assembly and a pre-tightening and rebounding assembly. The first slide plate and the second slide plate can automatically clamp and release the movable electrocoagulation needle body through the change of the interval and the extrusion force between the first slide plate and the second slide plate. Through linkage of the transmission assembly, when the rotating handle part is rotated, the two slide nuts are synchronously moved close to or away from each other, so that the position of the first slide plate is adjusted, and the interval between the two electrocoagulation needle bodies is adjusted.

Description

Technical Field

[0001] This invention belongs to the field of electrocoagulation hemostasis technology, specifically referring to a disposable bipolar electrocoagulation needle for deep liver treatment. Background Technology

[0002] In hepatobiliary surgery, electrocautery knives, electrocoagulation hooks, electrocoagulation rods, and electrocoagulation forceps are commonly used surgical instruments, mainly for hemostasis and cutting / severing of exposed blood vessels and superficial tissue structures at the surgical wound site. Due to the rich blood supply and complex internal ducts (including the hepatic arterial system, hepatic venous system, portal venous system, and bile duct system) of the liver, incomplete coagulation of the liver resection surface during surgery, and the tendency for blood vessels to retract and become hidden deep within the liver parenchyma, are common causes of persistent bleeding from the liver resection surface. The difficulty in locating and completely achieving hemostasis deep within the liver during hepatectomy has always plagued surgeons and is a significant factor restricting the development of hepatectomy techniques (such as laparoscopic or robotic hepatectomy). Therefore, the precision, stability, and thoroughness of hemostatic instruments during surgery are extremely important, especially the adjustment of the distance between the two poles of the bipolar electrocoagulation needle, its fixation stability, and the guidance of the puncture position, which directly affect the surgical outcome and patient safety.

[0003] Currently, traditional bipolar electrocoagulation needles have the following problems:

[0004] The relative positions of the two independent electrocautery needles are uncertain, making it difficult to accurately control the area requiring electrocautery.

[0005] Existing fixation devices suffer from poor stability and low adjustment precision: the fixation of the electrocoagulation needle and the adjustment bracket mostly relies on mechanical clamping, which can easily cause longitudinal slippage or rotation due to external forces during surgical operations, affecting the accuracy of coagulation and hemostasis, and may even cause accidental damage to normal tissues.

[0006] Lack of puncture guidance: In deep liver surgery, the precise location of the electrocoagulation needle puncture site depends on the doctor's experience. The lack of intuitive visual guidance, especially when the lesion is deep or the field of vision is limited, can easily lead to puncture deviation and increase surgical risks. Summary of the Invention

[0007] In response to the above situation and to overcome the shortcomings of the prior art, this invention proposes a disposable bipolar electrocoagulation needle for deep liver treatment. By changing the distance and squeezing force between the first and second sliding plates, the movable electrocoagulation needle body can be automatically clamped and released. Through the linkage of the transmission components, when the handle is rotated, the two sliding nuts can move closer or further apart synchronously, thereby adjusting the position of the first sliding plate and thus adjusting the distance between the two electrocoagulation needle bodies.

[0008] In addition, the movement of the second slide can be controlled by the elastic force of the pre-tension spring, so that the first and second slides remain relaxed when they are away from the locking bushing. This is not only conducive to the installation and removal of the electrocoagulation needle body, but also allows for direct longitudinal adjustment of the electrocoagulation needle body. When the first and second slides are close to the locking bushing, they remain clamped, which helps to maintain the stability and controllability of the electrocoagulation needle body.

[0009] The technical solution adopted by this invention is as follows: This invention proposes a disposable bipolar electrocoagulation needle for deep liver treatment, comprising an electrocoagulation needle body, a locking bushing, a movable needle adjustment mechanism, a fixed needle assembly, and an automatic indicator assembly. The fixed needle assembly includes a fixing frame and a flipping part, the flipping part being rotatably disposed on one side of the fixing frame. The movable needle adjustment mechanism includes an automatic clamping assembly, an adjustment assembly, a transmission assembly, and a pre-tightening and spring-loaded assembly. The automatic clamping assembly is slidably disposed on the fixing frame, the adjustment assembly is rotatably disposed on the fixing frame, the transmission assembly is disposed between the automatic clamping assembly and the adjustment assembly, and the pre-tightening and spring-loaded assembly is disposed between the automatic clamping assembly and the fixing frame.

[0010] Furthermore, the electrocoagulation needle body consists of a metal needle shaft, an insulated handle, and a wire.

[0011] The fixing frame is provided with a transverse sliding groove. The automatic clamping assembly includes a first sliding plate, a second sliding plate, and a rubber needle sleeve. The first and second sliding plates are engaged and slidably disposed in the transverse sliding groove. The rubber needle sleeve is disposed between the first and second sliding plates. One of the electrocoagulation needle bodies is disposed in the rubber needle sleeve through a metal needle rod. The surface of the metal needle rod located in the rubber needle sleeve is provided with a spiral pattern. The rubber needle sleeve is composed of two arc-shaped parts, which are respectively fixed to the concave surfaces of the first and second sliding plates.

[0012] By varying the distance between the first and second sliding plates and the pressure applied, the movable electrocautery needle body can be automatically clamped and released.

[0013] Preferably, the adjusting assembly includes a bushing, an adjusting screw, and a sliding nut. The fixing frame has a longitudinal through hole, the bushing is located at both ends of the longitudinal through hole, the adjusting screw is rotatably located in the bushing, and the top end of the adjusting screw has a handle.

[0014] As a further preferred embodiment of the present invention, the adjusting screw is provided with symmetrical threads in opposite directions, the fixing bracket is provided with a longitudinal groove at the longitudinal through hole, the sliding nut is engaged and slidably disposed in the longitudinal groove, and the sliding nut and the adjusting screw are threadedly connected.

[0015] Preferably, the transmission assembly includes a hinge seat and a hinge link, the hinge link being respectively disposed on the sliding nut and the first sliding plate, and both ends of the hinge link being hinged to the hinge seat.

[0016] Through the linkage of the transmission components, when the handle is rotated, the two sliding nuts can move closer or further apart synchronously, thereby adjusting the position of the first slide plate and thus adjusting the distance between the two electrocautery needle bodies.

[0017] As a further preferred embodiment of the present invention, the pre-tightening rebound assembly includes a telescopic sleeve, a telescopic rod, and a pre-tightening spring. The telescopic sleeve is disposed on the inner wall of the fixed frame, the telescopic rod is disposed on the second slide plate, the telescopic rod is engaged and slidably disposed in the telescopic sleeve, the pre-tightening spring is sleeved on the outside of the telescopic sleeve and the telescopic rod, and the pre-tightening spring is disposed between the second slide plate and the fixed frame.

[0018] The movement of the second slide can be controlled by the elastic force of the pre-tension spring, so that the first and second slides remain relaxed when they are away from the locking bushing. This is not only conducive to the installation and removal of the electrocoagulation needle body, but also allows for direct longitudinal adjustment of the electrocoagulation needle body. When the first and second slides are close to the locking bushing, they remain clamped, which helps to maintain the stability and controllability of the electrocoagulation needle body.

[0019] After the metal needle bar is clamped by the rubber needle sleeve, the inner wall of the rubber needle sleeve will automatically form a groove that matches the thread pattern. At this time, by rotating the insulating handle, the relative tip depth of the two electrocautery needle bodies can still be adjusted again.

[0020] As a further preferred embodiment of the present invention, the flipping part can be locked and unlocked relative to the fixing frame, the locking bushing is composed of two arc-shaped parts, the two arc-shaped parts are respectively fixed to the inner concave surfaces of the handle part and the flipping part, and the other part of the electrocautery needle body is provided in the locking bushing through a metal needle rod, and the surface of the metal needle rod located in the locking bushing is provided with an array of annular patterns.

[0021] The annular pattern has the property of maintaining the longitudinal position, so that the electrocautery needle body held by the locking bushing will not slip longitudinally after the flipping part is closed.

[0022] Furthermore, the fixing pin assembly also includes an extension plate, which is fixed to the flipping part and has an interface for connecting to an external robot arm.

[0023] Furthermore, the automatic indicator assembly includes an elastic rope and an indicator light source. The two ends of the elastic rope are respectively disposed on the second slide plate and the fixing frame. The indicator light source array is disposed on the elastic rope. The metal needle rods of the two electrocautery needle bodies are located at both ends of the automatic indicator assembly. The light direction of the indicator light source is parallel to the direction of the metal needle rod.

[0024] The indicator light source projects a beam of light onto the target surface. The puncture point of the metal needle bar is located at both ends of the projected light beam from the automatic indicator component, and the length of the light beam can be automatically adjusted according to the adjustment of the movable needle adjustment mechanism to provide guidance for puncture.

[0025] In addition to being handheld, this solution can also be connected to a robotic arm via an extension plate for automated puncture operations.

[0026] The beneficial effects achieved by the present invention using the above structure are as follows:

[0027] (1) By changing the gap and squeezing force between the first and second slide plates, the moving electrocoagulation needle body can be automatically clamped and released.

[0028] (2) Through the linkage of the transmission components, when the handle is rotated, the two sliding nuts can move closer or further away synchronously, thereby adjusting the position of the first slide plate and thus adjusting the distance between the two electrocoagulation needle bodies.

[0029] (3) The movement of the second slide can be controlled by the elastic force of the pre-tightening spring, so that the first slide and the second slide remain relaxed when they are away from the locking bushing. This is beneficial for the installation and disassembly of the electrocoagulation needle body, and also allows for direct longitudinal adjustment of the electrocoagulation needle body. When the first slide and the second slide are close to the locking bushing, they remain clamped, which is beneficial for maintaining the stability and controllability of the electrocoagulation needle body.

[0030] (4) After the metal needle bar is clamped by the rubber needle sleeve, the inner wall of the rubber needle sleeve will automatically form a groove that matches the thread pattern. At this time, by rotating the insulating handle, the relative tip depth of the two electrocoagulation needle bodies can still be adjusted again.

[0031] (5) The annular pattern has the characteristic of maintaining the longitudinal position, so that the electrocoagulation needle body held by the locking bushing will not slip longitudinally after the flipping part is closed.

[0032] (6) The indicator light source will project a light on the target surface. The puncture position of the metal needle bar is located at both ends of the projected light of the automatic indicator component, and the length of the light can be automatically adjusted according to the adjustment of the movable needle adjustment mechanism to provide guidance for puncture. Attached Figure Description

[0033] Figure 1 A three-dimensional view of the disposable bipolar electrocoagulation needle for deep liver penetration proposed in this invention;

[0034] Figure 2 This is a front view of the disposable bipolar electrocoagulation needle for deep liver use proposed in this invention.

[0035] Figure 3This is a left view of the disposable bipolar electrocoagulation needle for deep liver use proposed in this invention;

[0036] Figure 4 for Figure 3 A cross-sectional view along section line AA;

[0037] Figure 5 for Figure 2 A cross-sectional view along the cutting line BB;

[0038] Figure 6 for Figure 4 A magnified view of a section at point I;

[0039] Figure 7 for Figure 5 Enlarged view of a section at point II;

[0040] Figure 8 This is a schematic diagram showing the distribution of the indicator light source.

[0041] The components include: 1. Electrocautery needle body; 2. Locking bushing; 3. Movable needle adjustment mechanism; 4. Fixed needle assembly; 5. Automatic indicator assembly; 6. Metal needle bar; 7. Insulated handle; 8. Wire; 9. Automatic clamping assembly; 10. Adjustment assembly; 11. Transmission assembly; 12. Pre-tightening spring assembly; 13. First slide plate; 14. Second slide plate; 15. Rubber needle sleeve; 16. Bushing; 17. Adjusting screw; 18. Sliding nut; 19. Hinge seat; 20. Hinge connecting rod; 21. Telescopic sleeve; 22. Telescopic rod; 23. Pre-tightening spring; 24. Handle; 25. Fixing frame; 26. Flipping part; 27. Extension plate; 28. Transverse groove; 29. ​​Longitudinal groove; 30. Longitudinal through hole; 31. Elastic rope; 32. Indicator light source.

[0042] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] like Figures 1-7 As shown, the present invention proposes a disposable bipolar electrocoagulation needle for deep liver treatment, comprising an electrocoagulation needle body 1, a locking bushing 2, a movable needle adjustment mechanism 3, a fixed needle assembly 4, and an automatic indicator assembly 5. The fixed needle assembly 4 includes a fixing frame 25 and a flipping part 26, the flipping part 26 being rotatably disposed on one side of the fixing frame 25. The movable needle adjustment mechanism 3 includes an automatic clamping assembly 9, an adjustment assembly 10, a transmission assembly 11, and a pre-tightening and spring-loaded assembly 12. The automatic clamping assembly 9 is slidably disposed on the fixing frame 25, the adjustment assembly 10 is rotatably disposed on the fixing frame 25, the transmission assembly 11 is disposed between the automatic clamping assembly 9 and the adjustment assembly 10, and the pre-tightening and spring-loaded assembly 12 is disposed between the automatic clamping assembly 9 and the fixing frame 25.

[0046] The electrocautery needle body 1 consists of a metal needle rod 6, an insulated handle 7, and a wire 8.

[0047] The fixed frame 25 is provided with a transverse sliding groove 28. The automatic clamping assembly 9 includes a first sliding plate 13, a second sliding plate 14 and a rubber needle sleeve 15. The first sliding plate 13 and the second sliding plate 14 are engaged and slidably disposed in the transverse sliding groove 28. The rubber needle sleeve 15 is disposed between the first sliding plate 13 and the second sliding plate 14. One of the electrocoagulation needle bodies 1 is disposed in the rubber needle sleeve 15 through a metal needle rod 6. The surface of the metal needle rod 6 located in the rubber needle sleeve 15 is provided with a spiral pattern. The rubber needle sleeve 15 is composed of two arc-shaped parts, which are respectively fixed to the concave surfaces of the first sliding plate 13 and the second sliding plate 14.

[0048] By varying the spacing and squeezing force between the first slide plate 13 and the second slide plate 14, the movable electrocautery needle body 1 can be automatically clamped and released.

[0049] The adjusting assembly 10 includes a bushing 16, an adjusting screw 17, and a sliding nut 18. The fixing frame 25 is provided with a longitudinal through hole 30. The bushing 16 is located at both ends of the longitudinal through hole 30. The adjusting screw 17 is rotatably located in the bushing 16. The top end of the adjusting screw 17 is provided with a handle 24.

[0050] The adjusting screw 17 is symmetrically provided with threads in opposite directions. The fixing bracket 25 is provided with a longitudinal groove 29 at the longitudinal through hole 30. The sliding nut 18 is engaged and slidably disposed in the longitudinal groove 29. The sliding nut 18 and the adjusting screw 17 are threadedly connected.

[0051] The transmission assembly 11 includes a hinge seat 19 and a hinge link 20. The hinge link 20 is respectively disposed on the sliding nut 18 and the first slide plate 13, and both ends of the hinge link 20 are hinged to the hinge seat 19.

[0052] Through the linkage of the transmission component 11, when the handle part 24 is rotated, the two sliding nuts 18 can move closer or further away synchronously, thereby realizing the position adjustment of the first slide plate 13, and then realizing the adjustment of the distance between the two electrocautery needle bodies 1.

[0053] The pre-tensioning rebound assembly 12 includes a telescopic sleeve 21, a telescopic rod 22, and a pre-tensioning spring 23. The telescopic sleeve 21 is disposed on the inner wall of the fixed frame 25, the telescopic rod 22 is disposed on the second slide plate 14, and the telescopic rod 22 is engaged and slidably disposed in the telescopic sleeve 21. The pre-tensioning spring 23 is sleeved on the outside of the telescopic sleeve 21 and the telescopic rod 22, and the pre-tensioning spring 23 is disposed between the second slide plate 14 and the fixed frame 25.

[0054] The movement of the second slide plate 14 can be controlled by the elastic force of the pre-tension spring 23, so that the first slide plate 13 and the second slide plate 14 remain relaxed when they are away from the locking bushing 2. This is not only conducive to the installation and disassembly of the electrocoagulation needle body 1, but also allows for direct longitudinal adjustment of the electrocoagulation needle body 1. When the first slide plate 13 and the second slide plate 14 are close to the locking bushing 2, they remain clamped, which is conducive to maintaining the stability and controllability of the electrocoagulation needle body 1.

[0055] After the metal needle bar 6 is clamped by the rubber needle sleeve 15, the inner wall of the rubber needle sleeve 15 will automatically form a groove that matches the thread pattern. At this time, by rotating the insulating handle 7, the relative tip depth of the two electrocoagulation needle bodies 1 can still be adjusted again.

[0056] The flipping part 26 can be locked and unlocked relative to the fixing frame 25. The locking bushing 2 is composed of two arc-shaped parts, which are respectively fixed to the inner concave surfaces of the handle part 24 and the flipping part 26. The other part of the electrocoagulation needle body 1 is provided in the locking bushing 2 through the metal needle rod 6. The surface of the metal needle rod 6 located in the locking bushing 2 is provided with an array of annular patterns.

[0057] The annular pattern has the property of maintaining the longitudinal position, so that the electrocautery needle body 1 held by the locking bushing 2 will not slip longitudinally after the flipping part 26 is closed.

[0058] The fixed pin assembly 4 also includes an extension plate 27, which is fixed to the flipping part 26 and has an interface for connecting to an external robot.

[0059] The automatic indicator component 5 includes an elastic rope 31 and an indicator light source 32. The two ends of the elastic rope 31 are respectively located on the second slide plate 14 and the fixing frame 25. The indicator light source 32 is arrayed on the elastic rope 31. The metal needle rods 6 of the two electrocautery needle bodies 1 are located at both ends of the automatic indicator component 5. The light direction of the indicator light source 32 is parallel to the direction of the metal needle rod 6.

[0060] The indicator light source 32 projects a beam of light onto the target surface. The puncture position of the metal needle bar 6 is located at both ends of the projected light beam of the automatic indicator component 5, and the length of the light beam can be automatically adjusted in accordance with the adjustment of the movable needle adjustment mechanism 3 to provide guidance for puncture.

[0061] In addition to being handheld, this solution can also be connected to a robotic arm via the extension plate 27 for automated puncture operations.

[0062] like Figure 8 As shown, the diagram illustrates the projection of the indicator light source 32. As the elastic rope 31 stretches and contracts, the total length of the indicator light source 32 changes, and the spacing between the indicator light sources 32 also changes. However, since the spacing between the indicator light source 32 at the end and the metal needle rod 6 remains unchanged, the accuracy of the indication position can be guaranteed. At the same time, in order to ensure the continuity of the projection light, the indicator light sources 32 that emit parallel light can overlap.

[0063] In practical use, this device can be operated by hand by a doctor, or it can be connected to a robotic arm via the expansion plate 27 for automated operation.

[0064] Before use, the electrocoagulation needle body 1 needs to be installed. Since the electrocoagulation needle body 1 will come into contact with the lesion site, it can be a disposable consumable. Other adjustment brackets can be disinfected and reused.

[0065] First, place the metal needle bar 6 with the annular pattern into the open flip-up part 26, then close and lock the flip-up part 26. At this time, the locking bushing 2 will deform under the pressure and cooperate with the annular pattern to fix an electrocoagulation needle body 1. After that, although the electrocoagulation needle body 1 can rotate under the action of external force, its longitudinal position can no longer be adjusted.

[0066] Then, the metal needle bar 6 with spiral pattern is placed in the loose rubber needle sleeve 15, and the handle part 24 is rotated, and the first slide plate 13 is pushed closer to the second slide plate 14 by the mutual separation of the sliding nuts 18.

[0067] After the rubber needle sleeves 15 on both sides simultaneously contact the metal needle rod 6, the handle part 24 continues to rotate. During the process of the first slide plate 13 pushing the second slide plate 14 to slide, due to the compression of the pre-tension spring 23, the squeezing force of the rubber needle sleeve 15 on the metal needle rod 6 increases. At this time, the rubber needle sleeve 15 will complete the fixation of an electrocoagulation needle body 1 by deforming itself and cooperating with the spiral pattern under the compression.

[0068] As long as the compression of the preload spring 23 exceeds a certain level, the rubber needle sleeve 15 can maintain the fixation of the electrocoagulation needle body 1 when compression continues.

[0069] If you want to adjust the relative tip depth of the two electrocoagulation needle bodies 1, you only need to rotate the electrocoagulation needle body 1 located in the rubber needle sleeve 15 to adjust it longitudinally.

[0070] During the sliding of the second slide plate 14, the total length of the elastic rope 31 changes accordingly, so the length of the light emitted by the indicator light source 32 also changes accordingly. The puncture position of the metal needle bar 6 is located at both ends of the projected light of the automatic indicator component 5, and the length of the light can be automatically adjusted accordingly with the adjustment of the movable needle adjustment mechanism 3 to provide guidance for puncture.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0072] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A disposable bipolar electrocoagulation needle for deep liver treatment, characterized in that: The device includes an electrocautery needle body (1), a locking bushing (2), a movable needle adjustment mechanism (3), a fixed needle assembly (4), and an automatic indicator assembly (5). The fixed needle assembly (4) includes a fixed frame (25) and a flipping part (26). The flipping part (26) is rotatably disposed on one side of the fixed frame (25). The movable needle adjustment mechanism (3) includes an automatic clamping assembly (9), an adjustment assembly (10), a transmission assembly (11), and a pre-tightening spring-loaded assembly (12). The automatic clamping assembly (9) is slidably disposed on the fixed frame (25). The adjustment assembly (10) is rotatably disposed on the fixed frame (25). The transmission assembly (11) is disposed between the automatic clamping assembly (9) and the adjustment assembly (10). The pre-tightening spring-loaded assembly (12) is disposed between the automatic clamping assembly (9) and the fixed frame (25). The electrocoagulation needle body (1) is composed of a metal needle rod (6), an insulated handle (7), and a wire (8); The automatic clamping assembly (9) includes a second sliding plate (14) and a rubber needle sleeve (15). One of the electrocoagulation needle bodies (1) is disposed in the rubber needle sleeve (15) via a metal needle rod (6). The surface of the metal needle rod (6) in the rubber needle sleeve (15) is provided with a spiral pattern. The other electrocoagulation needle body (1) is disposed in the locking bushing (2) via a metal needle rod (6). The surface of the metal needle rod (6) in the locking bushing (2) is provided with an array of annular patterns. The automatic indicator assembly (5) includes an elastic rope (31) and an indicator light source (32). The two ends of the elastic rope (31) are respectively located on the second slide plate (14) and the fixing frame (25). The indicator light source (32) array is located on the elastic rope (31). The metal needle rods (6) of the two electrocautery needle bodies (1) are located at both ends of the automatic indicator assembly (5). The direction of the optical fiber of the indicator light source (32) is parallel to the direction of the metal needle rod (6). The fixing frame (25) is provided with a transverse sliding groove (28). The automatic clamping assembly (9) also includes a first sliding plate (13). The first sliding plate (13) and the second sliding plate (14) are engaged and slidably disposed in the transverse sliding groove (28). The rubber needle sleeve (15) is disposed between the first sliding plate (13) and the second sliding plate (14). The rubber needle sleeve (15) is composed of two arc-shaped parts, which are respectively fixed to the concave surfaces of the first sliding plate (13) and the second sliding plate (14).

2. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 1, characterized in that: The adjustment assembly (10) includes a bushing (16), an adjustment screw (17), and a sliding nut (18). The fixing frame (25) is provided with a longitudinal through hole (30). The bushing (16) is located at both ends of the longitudinal through hole (30). The adjustment screw (17) is rotatably located in the bushing (16). The top end of the adjustment screw (17) is provided with a handle (24).

3. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 2, characterized in that: The adjusting screw (17) is symmetrically provided with threads in opposite directions. The fixing bracket (25) is provided with a longitudinal groove (29) at the longitudinal through hole (30). The sliding nut (18) is engaged and slidably disposed in the longitudinal groove (29). The sliding nut (18) and the adjusting screw (17) are threadedly connected.

4. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 3, characterized in that: The transmission assembly (11) includes a hinge seat (19) and a hinge link (20). The hinge link (20) is respectively disposed on the sliding nut (18) and the first slide plate (13). The two ends of the hinge link (20) are hinged to the hinge seat (19).

5. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 4, characterized in that: The pre-tightening rebound assembly (12) includes a telescopic sleeve (21), a telescopic rod (22), and a pre-tightening spring (23). The telescopic sleeve (21) is located on the inner wall of the fixed frame (25). The telescopic rod (22) is located on the second slide plate (14). The telescopic rod (22) is engaged and slidably located in the telescopic sleeve (21). The pre-tightening spring (23) is sleeved on the outside of the telescopic sleeve (21) and the telescopic rod (22). The pre-tightening spring (23) is located between the second slide plate (14) and the fixed frame (25).

6. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 5, characterized in that: The flipping part (26) can be locked and unlocked relative to the fixing frame (25). The locking bushing (2) consists of two arc-shaped parts, which are respectively fixed to the inner concave surfaces of the handle part (24) and the flipping part (26).

7. The disposable bipolar electrocoagulation needle for deep liver treatment according to claim 6, characterized in that: The fixed pin assembly (4) also includes an extension plate (27), which is fixed to the flipping part (26) and has an interface for connecting with an external robot arm.

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