Water drop electrosurgical forceps

Abstract

This invention relates to the field of medical device technology, specifically to a drip electrocoagulation forceps; it includes a gripping handle, a forceps bar assembly, a forceps head assembly, a circuit assembly, and a drip assembly. The gripping handle has a main grip fixedly connected to it and a trigger hinged thereto. The forceps bar assembly includes a conductive tube and a pull rod coaxially disposed within the conductive tube. The forceps head assembly is disposed at the distal end of the forceps bar assembly. A first forceps head and a second forceps head are hinged through an insulating component and opened and closed by pulling the pull rod. The circuit assembly includes a fixed electrode and a flexible electrode disposed on the conductive tube and the pull rod, and a power line electrically connected to the fixed electrode and the flexible electrode. The drip assembly includes at least one drip tube extending axially within the conductive tube and a drip hole disposed at the end of the drip tube, with the drip hole facing the forceps head assembly. The drip electrocoagulation forceps of this invention are stable in operation, suitable for deep surgical procedures, and feature coordinated clamping and drip control with stable and reliable flow control.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a drip electrocoagulation forceps. Background Technology

[0002] Electrocoagulation forceps are commonly used hemostatic instruments in surgery. They use high-frequency current to coagulate tissue proteins and close blood vessels to achieve hemostasis. Due to the high temperature, tissues tend to stick to the forceps head, affecting the continuity and precision of the surgical procedure. Water drip electrocoagulation can effectively solve this problem by dripping physiological saline into the forceps head area while electrocoagulating, which prevents tissue adhesion through cooling and isolation.

[0003] There are two main types of existing electrocoagulation devices for dripping: one type is forceps-type structure, such as the electrocoagulation forceps disclosed in CN221106015U and CN219645865U, which achieves clamping by pinching two elastic forceps and achieves dripping by pressing the tubing to open and close through a mechanical structure; the other type is cleaning equipment, such as the electrocoagulation forceps rinsing mechanism disclosed in CN222842735U, which is used for postoperative cleaning rather than for use during surgery.

[0004] However, existing forceps-type electrocoagulation instruments suffer from insufficient operational stability. The forceps structure relies on the surgeon's finger pinching force to maintain clamping, which can easily lead to hand fatigue and unstable clamping force during prolonged surgery. Furthermore, the forceps structure is not suitable for deep surgery, resulting in significant limitations in its use. In addition, the flow rate control of these instruments is mostly achieved by mechanical structures such as rollers and clips to compress the drip tube, which can easily lead to tube damage and breakage. Moreover, in existing devices, the drip control and clamping actions are separated, lacking effective linkage between the two. The surgeon needs to control clamping and dripping separately, which is cumbersome and prone to errors. Therefore, there is an urgent need for a drip electrocoagulation forceps that can operate stably, is suitable for deep surgical procedures, and provides coordinated clamping and drip control with stable and reliable flow control. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art and provide a drip electrocoagulation forceps that, compared with the prior art, is stable in operation, suitable for deep surgical operations, and has coordinated clamping and drip control with stable and reliable flow control.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A dripping electrocoating pliers includes a gripping handle, a plier bar assembly, a plier head assembly, a circuit assembly, and a dripping assembly; The grip handle is provided with a main grip fixedly connected thereto and a trigger hinged thereto, and an ergonomic grip space is formed between the main grip and the trigger. The clamp assembly includes a conductive tube and a pull rod coaxially disposed within the conductive tube. The conductive tube is fixedly connected to the grip handle, and the pull rod is movably connected to the trigger. The pliers head assembly is located at the distal end of the pliers bar assembly and includes a first pliers head and a second pliers head. The first pliers head and the second pliers head are hinged together by an insulating component and are opened and closed by pulling the pull rod. The circuit assembly includes a fixed electrode and a flexible electrode disposed on the conductive tube and the pull rod, and a power line electrically connected to the fixed electrode and the flexible electrode, the power line being connected to an external host. The drip assembly includes at least one drip tube extending axially within the conductive tube, and a drip hole disposed at the end of the drip tube, the drip hole being disposed toward the pliers assembly; The grip handle is also equipped with a linkage control component, including a cam component fixedly connected to the trigger on the same axis and a pressing block abutting against the cam component. The pressing block abuts against the drip pipe and is driven by the cam component to realize linkage control of the on and off of the drip pipe.

[0007] Preferably, the drip tube is arranged along the inner axial direction of the conductive tube and extends out of the far end of the conductive tube, and a drip hole is also provided on the end face of the extended end of the drip tube.

[0008] Preferably, a plurality of positioning blocks are arranged in an axial array on the inner wall of the conductive tube, and the drip tube passes through the positioning blocks to prevent the drip tube from shifting or twisting within the conductive tube; the tail end of the drip tube is located inside the grip handle and extends out, and its end is also provided with a connector for connection to an external host.

[0009] Preferably, the grip handle is provided with a linkage control component, including a cam and a pressing block. The cam is coaxially and fixedly connected to the trigger, and the cam has an outer contour surface that changes with the trigger engagement angle. The grip handle is also provided with a slide groove, and the pressing block is movably disposed in the slide groove.

[0010] Preferably, the extrusion block includes a sliding part and a first abutting part and a second abutting part fixedly disposed on both sides of the sliding part; the first abutting part has an obliquely extending abutting surface, and the first abutting part abuts against the outer contour curved surface of the cam component through the abutting surface; the second abutting part has a smooth abutting surface, and the second abutting part abuts against the dripping pipe through the abutting surface; a pipe groove is also provided in the grip handle at the part where the second abutting part and the dripping pipe abut against each other, the pipe groove includes straight segments and arc segments connected to each other, and the bottom of the groove at the connection part is also provided with a slot for the second abutting part to extend into.

[0011] Preferably, the outer contour surface includes a small radius arc segment, a transition arc segment, and a large radius arc segment connected in sequence. The small radius arc segment corresponds to the released state of the trigger, the large radius arc segment corresponds to the engaged state of the trigger, and the transition arc segment corresponds to the middle stroke of the trigger. A reset elastic element is also provided between the sliding part and the inner wall of the grip handle for pushing the squeezing block to reset when the trigger is released.

[0012] Preferably, the drip pipe is connected to a flow control component, which includes a valve body and a valve core movably connected to the valve body; the valve body includes an inlet channel and at least one outlet channel, both of which are connected to the drip pipe; the valve body has a movable chamber, the valve core is disposed in the movable chamber, and the surface of the valve body also has a movable groove that communicates with the movable chamber.

[0013] Preferably, the valve core has a fluid channel, and the position and number of the inlet and outlet of the fluid channel correspond to the inlet channel and the outlet channel on the valve body; a pin is fixedly connected to the valve core and passes through the movable groove, and an adjusting element is provided at the end of the pin for adjusting the movement of the valve core in the movable chamber; and sealing elements are also sleeved at both ends of the valve core.

[0014] Preferably, the clamp head assembly is fixedly connected to the end of the conductive tube through a fixing part, the fixing part is covered outside the insulating part, and drip grooves are provided on both sides of the fixing part for the drip tube to pass through and extend out of the conductive tube. An insulating outer tube is also sleeved on the outside of the conductive tube.

[0015] Preferably, the fixed electrode is fixedly connected to the conductive tube, and the conductive tube is hinged to the first clamp head to achieve current conduction; the elastic electrode abuts against the pull rod through elastic force, and the extended end of the pull rod is hinged to the second clamp head to achieve current conduction; both the first clamp head and the second clamp head are hinged to the insulating component, and the clamp head assembly is opened and closed by pulling the pull rod.

[0016] In summary, the beneficial effects of this invention are as follows: 1. The drip electrocoagulation forceps of the present invention, by setting a long rod-type forceps assembly and a gun-type grip handle, combined with an internally integrated drip component, enables the surgical instrument to drip water onto the forceps head area even when deep surgery is required, thus solving the problems of the great limitations of traditional drip electrocoagulation instruments and the easy hand fatigue and unstable clamping force caused by long-term surgery.

[0017] 2. The dripping electrocoagulation clamp of the present invention has a dripping tube set inside the clamp rod assembly. The tube body is isolated from the external environment, avoiding the possibility of damage or contamination of the tube. A positioning block is set inside the conductive tube, which can make the dripping tube stably arranged along the axial direction, effectively preventing it from being displaced or twisted inside the conductive tube, ensuring accurate dripping position, and further improving the cooling effect.

[0018] 3. The drip electrocoagulation forceps of the present invention are equipped with a linkage control component on the trigger of the handle, which links the action of the trigger to the on / off control of the drip tube, so that the dripping is automatic when the trigger is engaged and stops when the trigger is released. The surgeon can complete the opening and closing of the forceps head and the dripping control with one hand without additional operation, avoiding the problem of untimely dripping during the operation and improving the efficiency and safety of the operation.

[0019] 4. The drip electrocautery forceps of the present invention has a flow control component on the drip tube. By rotating or sliding the valve core in the valve body, the connection state between the fluid channel and the inlet / outlet channel is changed, so as to achieve precise adjustment of the drip flow rate and adapt to the surgical needs of different scenarios. At the same time, the valve body and the valve core are made of rigid materials. Compared with the roller or buckle adjustment in the existing flow control structure, there is no need to compress the drip tube, avoiding damage to the drip tube and improving the stability of flow regulation and the reliability of surgical instruments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the dripping electrocoating clamp of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the clamp rod assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the dripping component of the present invention; Figure 4 This is a schematic diagram of the internal structure of the grip handle of the present invention; Figure 5 This is a schematic diagram of the structure of the pliers head assembly of the present invention; Figure 6 This is a schematic diagram of the trigger release structure of the linkage control component of the present invention; Figure 7 This is a schematic diagram of the trigger engagement structure of the linkage control component of the present invention; Figure 8 This is a schematic diagram of the flow control component of the present invention; Figure 9 This is a schematic diagram of the valve core of the present invention.

[0021] The diagram shows the following markings: 1. Grip handle; 11. Main grip; 12. Trigger; 13. Slide; 14. Tube groove; 141. Straight segment; 142. Curved segment; 143. Groove; 2. Clamping bar assembly; 21. Conductive tube; 22. Pull rod; 23. Positioning block; 24. Insulating outer tube; 3. Clamping head assembly; 31. First clamping head; 32. Second clamping head; 33. Insulating component; 34. Fixing part; 35. Drip groove; 4. Circuit assembly; 41. Fixed electrode; 42. Elastic electrode; 43. Power cord; 5. Drip assembly; 51. Drip tube; 52. Drip hole; 54. Connector; 6. Linkage control assembly; 61. Cam component; 62. Pressing block; 621. Sliding part; 622. First abutment part; 623. Second abutment part; 63. Outer contour surface; 631. Small radius arc segment; 632. Transition arc segment; 633. Large radius arc segment; 64. Reset elastic element; 7. Flow control assembly; 71. Valve body; 711. Inlet channel; 712. Outlet channel; 713. Movable chamber; 714. Movable groove; 72. Valve core; 721. Fluid channel; 73. Pin; 74. Adjusting element; 75. Sealing element. Detailed Implementation

[0022] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] according to Figures 1-5 As shown, a dripping electrocoating pliers includes a grip handle 1, a plier bar assembly 2, a plier head assembly 3, a circuit assembly 4, and a dripping assembly 5; The grip handle 1 is provided with a main grip 11 fixedly connected thereto and a trigger 12 hinged thereto, and an ergonomic grip space is formed between the main grip 11 and the trigger 12. The clamp assembly 2 includes a conductive tube 21 and a pull rod 22 coaxially disposed within the conductive tube 21. The conductive tube 21 is fixedly connected to the grip handle 1, and the pull rod 22 is movably connected to the trigger 12. The pliers head assembly 3 is located at the far end of the pliers bar assembly 2, and includes a first pliers head 31 and a second pliers head 32. The first pliers head 31 and the second pliers head 32 are hinged together by an insulating member 33 and are opened and closed by pulling the pull rod 22. The circuit assembly 4 includes a fixed electrode 41 and an elastic electrode 42 disposed on the conductive tube 21 and the pull rod 22, and a power line 43 electrically connected to the fixed electrode 41 and the elastic electrode 42, the power line 43 being connected to an external host. The drip assembly 5 includes two drip tubes 51 extending axially along the inside of the conductive tube 21, and a drip hole 52 disposed at the end of the drip tube 51, with the drip hole 52 facing the direction of the pliers assembly 3.

[0026] In use, the operator passes their fingers through the grip space and pulls the trigger 12 to control the opening and closing of the clamp head assembly 3. The surface of the main grip 11 can also be provided with anti-slip texture or covered with anti-slip material to improve grip stability. The conductive tube 21 and pull rod 22 of the clamp bar assembly 2 are made of conductive metal material, serving as both structural support and current conduction path. The insulating part 33 of the clamp head assembly 3 is made of high-temperature resistant insulating material such as ceramic or engineering plastic to ensure electrical insulation between the first clamp head 31 and the second clamp head 32. The conductive tube 21 is fixedly installed on the fixed electrode 41, and the pull rod 22 is elastically abutted by the upper and lower elastic plates of the elastic electrode 42, so that the pull rod 22 always maintains contact with the elastic electrode 42 even when it moves, ensuring the reliability of current conduction. The drip tube 51 is set inside the conductive tube 21 and always maintains a certain distance from the pull rod 22 inside the tube to ensure that the pull rod 22 does not contact the drip tube 51 when it moves.

[0027] according to Figure 2 Figure 3 As shown, the drip tube 51 is arranged axially along the inside of the conductive tube 21 and extends out of the far end of the conductive tube 21. A drip hole 52 is also provided on the end face of the extended end of the drip tube 51. Several positioning blocks 23 are arranged in an axial array on the inner wall of the conductive tube 21. The drip tube 51 passes through the positioning blocks 23 to prevent the drip tube 51 from shifting or twisting inside the conductive tube 21. The tail end of the drip tube 51 is located inside the grip handle 1 and extends out. Its end is also provided with a connector 54 to connect to the external host. The tail end of the drip tube 51 extends out after passing through the inside of the grip handle 1. The connector 54 at its end adopts a standard Luer connector or other quick connection structure to facilitate quick connection and disconnection with the external infusion line.

[0028] according to Figure 4 , Figure 5As shown, the clamp head assembly 3 is fixedly connected to the end of the protruding end of the conductive tube 21 via the fixing part 34. The fixing part 34 covers the outside of the insulating part 33. Drip grooves 35 are provided on both sides of the fixing part 34 for the drip tube 51 to pass through and extend out of the conductive tube 21. An insulating outer tube 24 is also sleeved on the outside of the conductive tube 21. The fixed electrode 41 is fixedly connected to the conductive tube 21. The conductive tube 21 is hinged to the first clamp head 31 to achieve current conduction. The elastic electrode 42 abuts against the pull rod 22. The protruding end of the pull rod 22 is connected to the second clamp head. The head 32 is hinged to enable current conduction; both the first clamp head 31 and the second clamp head 32 are hinged to the insulating part 33, and the clamp head assembly 3 is opened and closed by pulling the pull rod 22; the fixing part 34 is fixedly connected to the conductive tube 21, providing stable support for the clamp head assembly 3; the drip groove 35 is a through groove structure, the width of which is slightly larger than the outer diameter of the drip tube 51, so that the drip tube 51 can pass through and extend smoothly; the insulating outer tube 24 wraps around the outside of the conductive tube 21 to prevent the conductive tube 21 from coming into contact with the tissue during the operation. The current flows to surrounding tissues and is conducted, while also preventing the surgeon from accidentally touching the conductive tube 21 during the operation, thus improving surgical safety. The distal end of the conductive tube 21 is in direct contact with the hinge of the first clamp head 31, allowing the current to be conducted from the power line 43 through the fixed electrode 41 and the conductive tube 21 to the first clamp head 31. The distal end of the pull rod 22 is in direct contact with the hinge of the second clamp head 32, allowing the current to be conducted from the power line 43 through the elastic electrode 42 and the pull rod 22 to the second clamp head 32. The first clamp head 31 and the second clamp head 32... Both are hinged to the insulating part 33 to prevent current from bypassing the tissue and forming a circuit directly through the pliers head. The two are connected by the pull rod 22 to open and close the pliers head. When the pull rod 22 is pulled by the trigger 12, the second pliers head 32 opens relative to the insulating part 33, and the insulating part 33 simultaneously drives the first pliers head 31 to open, realizing the opening of the entire pliers head. When the pull rod 22 is released, the trigger 12 is reset under the action of the return spring, which drives the pull rod 22 to reset, and the second pliers head 32 and the first pliers head 31 close and reset, realizing the closing of the entire pliers head.

[0029] Example 2

[0030] The difference from Embodiment 1 above is that, according to Figure 6 , Figure 7 As shown, a linkage control component 6 is provided inside the grip handle 1, including a cam 61 and a pressing block 62. The cam 61 is coaxially and fixedly connected to the trigger 12. The cam 61 has an outer contour surface 63 that changes with the engagement angle of the trigger 12. A slide groove 13 is also provided inside the grip handle 1, and the pressing block 62 is movably disposed in the slide groove 13. The cam 61 is coaxially and fixedly connected to the trigger 12. When the trigger 12 is pulled, the cam 61 rotates synchronously, and its outer contour surface 63 contacts the pressing block 62 and pushes the pressing block 62 to slide in the slide groove 13. The extension direction of the slide groove 13 is matched with the arrangement direction of the drip pipe 51, so that the sliding of the pressing block 62 can exert a squeezing or releasing effect on the drip pipe 51.

[0031] The extrusion block 62 includes a sliding part 621 and a first abutting part 622 and a second abutting part 623 fixedly disposed on both sides of the sliding part 621. The first abutting part 622 has an obliquely extending abutting surface, through which the first abutting part 622 abuts against the outer contour curved surface 63 of the cam member 61. The second abutting part 623 has a smooth abutting surface, through which the second abutting part 623 abuts against the drip pipe 51. A pipe groove 14 is also provided in the grip handle 1 at the part where the second abutting part 623 abuts against the drip pipe 51. The pipe groove 14 includes a straight segment 141 and an arc segment 142 connected to each other. The bottom of the groove at the connection part is also provided with a slot 143 for the second abutting part 623 to extend into. The extrusion block 62 is disposed in the sliding groove 13 through the sliding part 621. The sliding part 621 is adapted to the shape of the groove 13, and can be rectangular, T-shaped or other cross-sectional shapes to ensure smooth sliding; the obliquely extended first abutment part 622 allows the rotational motion of the cam 61 to be smoothly converted into the linear sliding of the extrusion block 62, and the smooth second abutment part 623 can avoid damage to the drip pipe 51, while providing uniform extrusion force; the groove 14 provides space and support for the drip pipe 51, and the structural design of the arc segment 142 can provide clearance for the movement of the extrusion block 62. When the extrusion block 62 moves, it can smoothly detach from the drip pipe 51. The size of the groove 143 is adapted to the size of the second abutment part 623 to ensure that the second abutment part 623 can accurately extend into and apply extrusion force to the drip pipe 51 when the extrusion block 62 is reset.

[0032] The outer contour surface 63 includes a small radius arc segment 631, a transition arc segment 632, and a large radius arc segment 633 connected in sequence. The small radius arc segment 631 corresponds to the released state of the trigger 12, the large radius arc segment 633 corresponds to the engaged state of the trigger 12, and the transition arc segment 632 corresponds to the middle stroke of the trigger 12. A reset elastic element 64 is also provided between the sliding part 621 and the inner wall of the grip handle 1, which is used to push the squeezing block 62 to reset when the trigger 12 is released. When the trigger 12 is in the initial released state, the small radius arc segment 631 of the outer contour surface 63 contacts the first abutment part 622, and the second abutment part 623 of the squeezing block 62 squeezes the drip tube 51 to close its liquid flow channel. When the trigger 12 is engaged... When the working angle is reached, the large radius arc segment 633 of the outer contour surface 63 contacts the first abutment part 622 and pushes the extrusion block 62 to move, so that the second abutment part 623 disengages from the groove 143 and moves away from the drip pipe 51. The second abutment part 623 no longer extrudes the drip pipe 51, and the liquid flow channel is opened after the drip pipe 51 recovers its deformation. The reset elastic element 64 between the sliding part 621 and the grip handle 1 can be a compression spring, torsion spring or elastic sheet. When the trigger 12 is released, the elastic force of the reset elastic element 64 pushes the extrusion block 62 to reset. The second abutment part 623 on the extrusion block 62 re-enters the groove 143 under the action of the elastic force and extrudes the drip pipe 51. The drip pipe 51 is extruded and blocked, thus closing the liquid cooling channel.

[0033] Example 3

[0034] The difference from Embodiments 1 and 2 above is that, according to Figure 8 , Figure 9 As shown, a flow control component 7 is connected to the drip pipe 51. The flow control component 7 includes a valve body 71 and a valve core 72 movably connected within the valve body 71. The valve body 71 includes an inlet channel 711 and two outlet channels 712, both of which are connected to the drip pipe 51. A movable chamber 713 is provided inside the valve body 71, and the valve core 72 is located in the movable chamber 713. A movable groove 714 is also provided on the surface of the valve body 71 and is connected to the movable chamber 713. The inlet channel 711 on the valve body 71 is connected to the upstream drip pipe 51, and the outlet channel 712 is connected to the downstream drip pipe 51. Liquid enters through the inlet channel 711, is regulated by the valve core 72, and flows out through the outlet channel 712. The shape of the movable chamber 713 inside the valve body 71 is adapted to the valve core 72, ensuring that the valve core 72 can move smoothly within the movable chamber 713.

[0035] The valve core 72 has a fluid channel 721 inside, and the inlet and outlet positions and number of the fluid channel 721 correspond to the inlet channel 711 and outlet channel 712 on the valve body 71. A pin 73 is fixedly connected to the valve core 72 and passes through the movable groove 714. An adjusting element 74 is provided at the end of the pin 73 to adjust the movement of the valve core 72 in the movable chamber 713. Sealing elements 75 are also sleeved at both ends of the valve core 72. When the valve core 72 moves in the movable chamber 713, the communication state between the fluid channel 721 and the inlet channel 711 and outlet channel 712 changes, thereby realizing flow regulation. During operation, the position of the valve core 72 can be changed by controlling the adjusting element 74 to regulate the dripping flow. When dripping is not required, the adjusting element 74 can be used to completely close the fluid channel 721 in the valve core 72. Sealing elements 75 are also provided on the valve core 72 to ensure the sealing between the valve core 72 and the movable chamber 713 and prevent liquid leakage.

Claims

1. A dripping electrocoating clamp, characterized in that, It includes a grip handle (1), a clamp bar assembly (2), a clamp head assembly (3), a circuit assembly (4), and a drip assembly (5); The grip handle (1) is provided with a main grip (11) fixedly connected thereto and a trigger (12) hinged thereto, and an ergonomic grip space is formed between the main grip (11) and the trigger (12). The clamp assembly (2) includes a conductive tube (21) and a pull rod (22) coaxially disposed in the conductive tube (21). The conductive tube (21) is fixedly connected to the grip handle (1), and the pull rod (22) is movably connected to the trigger (12). The pliers head assembly (3) is located at the far end of the pliers bar assembly (2), and includes a first pliers head (31) and a second pliers head (32). The first pliers head (31) and the second pliers head (32) are hinged by an insulating member (33) and are opened and closed by pulling the pull rod (22). The circuit assembly (4) includes a fixed electrode (41) and an elastic electrode (42) disposed on the conductive tube (21) and the pull rod (22), and a power line (43) electrically connected to the fixed electrode (41) and the elastic electrode (42), the power line (43) being connected to an external host. The drip assembly (5) includes at least one drip tube (51) extending axially within the conductive tube (21) and a drip hole (52) disposed at the end of the drip tube (51), the drip hole (52) being disposed toward the pliers assembly (3). The grip handle (1) is also provided with a linkage control component (6), including a cam component (61) coaxially fixedly connected to the trigger (12) and a pressing block (62) abutting against the cam component (61). The pressing block (62) abuts against the drip pipe (51) and is driven by the cam component (61) to realize the linkage control of the opening and closing of the drip pipe (51).

2. The dripping electrocoating clamp according to claim 1, characterized in that, The drip tube (51) is arranged along the inner axial direction of the conductive tube (21) and extends out of the far end of the conductive tube (21). A drip hole (52) is also provided on the end face of the extended end of the drip tube (51).

3. The dripping electrocoating clamp according to claim 2, characterized in that, The inner wall of the conductive tube (21) is provided with a plurality of positioning blocks (23) arranged in an axial array. The drip tube (51) passes through the positioning blocks (23) to prevent the drip tube (51) from shifting or twisting inside the conductive tube (21). The tail end of the drip tube (51) is located inside the grip handle (1) and extends out. Its end is also provided with a connector (54) to connect to the external host.

4. The dripping electrocoating tongs according to claim 1, characterized in that, The cam component (61) has an outer contour surface (63) that changes with the engagement angle of the trigger (12); the grip handle (1) is also provided with a groove (13), and the pressing block (62) is movably disposed in the groove (13).

5. The dripping electrocoating clamp according to claim 4, characterized in that, The extrusion block (62) includes a sliding part (621) and a first abutting part (622) and a second abutting part (623) fixedly disposed on both sides of the sliding part (621); the first abutting part (622) is provided with an obliquely extending abutting surface, and the first abutting part (622) abuts against the outer contour surface (63) of the cam member (61) through the abutting surface; the second abutting part (623) is provided with a smooth abutting surface, and the second abutting part (623) abuts against the drip pipe (51) through the abutting surface; a pipe groove (14) is also provided in the part of the grip handle (1) where the second abutting part (623) and the drip pipe (51) abut against each other, and the pipe groove (14) includes a straight segment (141) and an arc segment (142) connected to each other, and a groove (143) is also provided at the bottom of the groove at the connection part for the second abutting part (623) to extend into.

6. The dripping electrocoating clamp according to claim 5, characterized in that, The outer contour surface (63) includes a small radius arc segment (631), a transition arc segment (632), and a large radius arc segment (633) connected in sequence. The small radius arc segment (631) corresponds to the released state of the trigger (12), the large radius arc segment (633) corresponds to the engaged state of the trigger (12), and the transition arc segment (632) corresponds to the middle stroke of the trigger (12). A reset elastic element (64) is also provided between the sliding part (621) and the inner wall of the grip handle (1) for pushing the squeezing block (62) to reset when the trigger (12) is released.

7. The dripping electrocoating clamp according to claim 1, characterized in that, A flow control component (7) is connected to the drip pipe (51). The flow control component (7) includes a valve body (71) and a valve core (72) movably connected to the valve body (71). The valve body (71) includes an inlet channel (711) and at least one outlet channel (712). The inlet channel (711) and the outlet channel (712) are both connected to the drip pipe (51). The valve body (71) is provided with a movable chamber (713). The valve core (72) is located in the movable chamber (713). The surface of the valve body (71) is also provided with a movable groove (714) and is connected to the movable chamber (713).

8. A dripping electrocoating clamp according to claim 7, characterized in that, The valve core (72) has a fluid channel (721) inside. The inlet and outlet positions and number of the fluid channel (721) correspond to the inlet channel (711) and outlet channel (712) on the valve body (71). A pin (73) is fixedly connected to the valve core (72) and passes through the movable groove (714). An adjusting element (74) is provided at the end of the pin (73) to adjust the movement of the valve core (72) in the movable chamber (713). Sealing elements (75) are also sleeved at both ends of the valve core (72).

9. A dripping electrocoating clamp according to claim 1, characterized in that, The clamp head assembly (3) is fixedly connected to the end of the protruding end of the conductive tube (21) through the fixing part (34). The fixing part (34) covers the outside of the insulating part (33). The fixing part (34) has drip grooves (35) on both sides for the drip tube (51) to pass through and extend out of the conductive tube (21). The conductive tube (21) is also fitted with an insulating outer tube (24).

10. A dripping electrocoating clamp according to claim 1, characterized in that, The fixed electrode (41) is fixedly connected to the conductive tube (21), and the conductive tube (21) is hinged to the first clamp head (31) to achieve current conduction; the elastic electrode (42) abuts against the pull rod (22), and the extended end of the pull rod (22) is hinged to the second clamp head (32) to achieve current conduction; the first clamp head (31) and the second clamp head (32) are both hinged to the insulating part (33), and the clamp head assembly (3) is opened and closed by pulling the pull rod (22).

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