Bipolar electrosurgical functional component and electrosurgical instrument applying same

Abstract

In one aspect of the invention, a bipolar electrosurgical functional assembly is presented that includes a first clip, a second clip, a mount, a master pin, and a drive assembly. The support comprises a first support arm and a second support arm. The driving assembly comprises a first driving block, a second driving block and a third driving block, the third driving block is made of plastic materials, and the third driving block is arranged between the first driving block and the second driving block so that the first driving block and the second driving block can be insulated from each other. The first clamp and the second clamp are installed between the first supporting arm and the second supporting arm, the driving assembly is installed between the first clamp tail and the second clamp tail, and the driving assembly is moved to force the first clamp and the second clamp to be opened in a rotating mode and closed in a rotating mode.

Description

Technical Field

[0001] This invention relates to surgical instruments, and more particularly to a minimally invasive surgical instrument. Background Technology

[0002] Precise cutting and coagulation are significant challenges for surgeons during surgery. Monopolar electrosurgical instruments offer high cutting and electrocoagulation efficiency, but their heat release is not precise enough, easily causing collateral tissue damage. Bipolar electrosurgical instruments are more precise than monopolar instruments, with significantly less collateral damage. Laparoscopic bipolar clips have low voltage resistance, typically operating at voltages below 800V, resulting in low cutting efficiency. Furthermore, current laparoscopic bipolar electrosurgical instruments have complex structures, are difficult to clean thoroughly for reuse, and are prone to breakdown failure; disposable laparoscopic bipolar electrosurgical instruments are also expensive. Summary of the Invention

[0003] Therefore, in order to solve the problems of existing technologies, a variety of solutions have been proposed.

[0004] In one aspect of the invention, a bipolar electrosurgical functional component is provided, comprising a first clamp, a second clamp, a support, a master pin, and a drive assembly. The first clamp includes a first clamp arm, a first clamp tail, and a first clamp shoulder connected thereto, the first clamp shoulder including a first clamp shoulder hole passing through it. The second clamp includes a second clamp arm, a second clamp tail, and a second clamp shoulder connected thereto, the second clamp shoulder including a second clamp shoulder hole passing through it. The support includes a support ring body and a first and second support arm integrally connected thereto and extending laterally outward, forming a U-shaped fork structure. Side holes of the support penetrate laterally through the first and second support arms, and a shaft hole of the support penetrates axially through the support ring body. The drive assembly includes a first drive block, a second drive block, and a third drive block. The first and second drive blocks are made of metal conductors, and the third drive block is made of plastic material. The third drive block is disposed between the first and second drive blocks, connecting them integrally, and the first and second drive blocks are mutually insulated. The first and second clamps are mounted between the first and second arms. The kingpin passes through the support side hole and the first and second clamp shoulder holes, confining the first and second clamp shoulders between the first and second arms, forming a main rotary joint that can rotate around the kingpin. The drive assembly is mounted between the first and second clamp tails, wherein the first drive block and the first clamp tail form a first drive joint that can slide relative to each other, and wherein the second drive block and the second clamp tail form a second drive joint that can slide relative to each other. Moving the drive assembly forces the first and second drive joints to slide simultaneously, thereby forcing the first and second clamps to rotate open and close around the main rotary joint.

[0005] In one embodiment, the first drive block includes a first drive block head and a first drive block tail. The first drive block head has a first drive groove, and the first drive block tail has a first connecting groove. The second drive block includes a second drive block head and a second drive block tail. The second drive block head has a second drive groove, and the second drive block tail has a second connecting groove. The third drive block includes a third drive block head and a third drive block tail. The third drive block tail has a first connecting block and a second connecting block extending laterally to both sides. The first drive block and the second drive block are respectively installed on both sides of the third drive block. The third drive block head separates the first and second drive block heads, and the third drive block tail separates the first and second drive block tails. The first drive groove and the second drive groove are stacked in an "X" shape. The first connecting block matches the first connecting groove, and the second connecting block matches the second connecting groove. The proximal end of the first clamp tail includes a first tail post, and the first drive groove and the first tail post match to form a first drive pair. The proximal end of the second clamp tail includes a second tail post, and the second drive groove and the second tail post match to form a second drive pair.

[0006] In another embodiment, the first drive block includes a first drive block head and a first drive block tail. The first drive block head is provided with a first drive shaft, and the first drive block tail is provided with a first connecting groove. The second drive block includes a second drive block head and a second drive block tail. The second drive block head is provided with a second drive shaft, and the second drive block tail is provided with a second connecting groove. The third drive block includes a third drive block head and a third drive block tail. The third drive block tail is provided with a first connecting block and a second connecting block extending laterally to both sides. The first drive block and the second drive block are respectively installed on both sides of the third drive block. The third drive block head separates the first and second drive block heads, and the third drive block tail separates the first and second drive block tails. The first connecting block matches the first connecting groove, and the second connecting block matches the second connecting groove. The proximal end of the first clamp tail includes a first tail groove, and the first drive shaft matches the first tail groove to form a first drive pair. The proximal end of the second clamp tail includes a second tail groove, and the second drive shaft matches the second tail groove to form a second drive pair.

[0007] In another embodiment, the minimum distance A1 between the first drive block and the second drive block is ≤1.0mm; the periphery of the third drive block includes drive block flanges extending to both sides, and the drive block flanges cover the periphery of the first drive block and the second drive block, so that the minimum creepage distance A0 between the first drive block and the second drive block is ≥1.0mm.

[0008] In another embodiment, the minimum distance B1 between the first and second clamps is ≤1.0mm; the functional component further includes an isolation core disposed between the first and second clamps, the isolation core ensuring that the minimum creepage distance B0 between the first and second clamps is ≥1.0mm.

[0009] In another embodiment, the thickness of the first clamp tail is less than that of the first clamp shoulder, and the thickness of the second clamp tail is less than that of the second clamp shoulder; the minimum distance C1 between the first clamp tail and the second clamp tail is ≥ 1.0 mm.

[0010] In another embodiment, the functional component further includes an insulating head sleeve disposed between the first shoulder and the first arm, the insulating head sleeve providing insulation between the first shoulder and the first tail and the first arm. The insulating core includes an insulating plate and an insulating shaft, the insulating shaft penetrating the first shoulder hole and contacting the insulating head sleeve. The main pin sequentially penetrates the first arm hole, the insulating head sleeve, the insulating hole, the second shoulder hole, and the second arm hole, confining the first and second shoulders between the first and second arms, forming a main rotating pair rotatable about the main pin.

[0011] In another embodiment, the shape and size design of the headgear flange ensures that the minimum creepage distance X0 between the second drive block and the first clamp shoulder and the first clamp tail is ≥1.0mm during the process of the first clamp and the second clamp opening from closed to the maximum angle.

[0012] In another embodiment, the functional component further includes a metal outer tube and an insulating outer tube, the insulating outer tube covering the outer surface of the metal outer tube, and the metal outer tube being integrally connected to the support. The functional component also includes a metal inner tie rod and an insulating inner rod, the insulating inner tube covering the outer surface of the metal inner tie rod, and the metal inner tie rod being integrally connected to the first drive block.

[0013] In another embodiment, the first clamp tail contacts and conducts with the first drive block, thereby forming a first circuit with the pull rod; the second clamp tail conducts with the main pin and the second support arm, thereby forming a second circuit with the extension tube. The isolation core, the third drive block, and the insulating head sleeve constitute an insulation system that isolates the aforementioned first and second circuits. The insulation system ensures that when the first and second clamps are opened to their maximum angle, the creepage distance between the first and second circuits is ≥1.0 mm.

[0014] In another aspect of the invention, a bipolar electrosurgical instrument is provided, characterized in that it comprises the functional components as described in claim 9, and further comprises a matching handle assembly. The handle assembly includes a handle shaft and a first handle and a second handle rotatable therearound; the first handle is connected to the outer metal tube, and the second handle is connected to the inner pull rod; the first and second handles rotate relative to each other, driving the inner pull rod to move relative to the outer tube, thereby forcing the drive assembly to move relative to the support, thereby driving the first and second clamps to rotate open or close. An electrode plug is provided in the first handle, the electrode plug comprising a first pole and a second pole; the first pole is conductive to the inner metal pull rod, and further conductive to the first drive block, and further conductive to the first clamp; the second pole is conductive to the outer metal tube, and further conductive to the support, and further conductive to the second clamp. Attached Figure Description

[0015] To gain a fuller understanding of the essence of the present invention, a detailed description will be provided below in conjunction with the accompanying drawings, wherein: Figure 1 This is an exploded view of bipolar functional component 2; Figure 2 This is a side projection schematic diagram of support 10; Figure 3 It is relative to Figure 2 Top view; Figure 4 This is a side projection schematic diagram of the insulating headgear 20; Figure 5 This is a schematic diagram of the other side projection of the insulating headgear 20; Figure 6 This is a three-dimensional schematic diagram of the first clip 30; Figure 7 This is an exploded view of drive component 5; Figure 8 This is a side projection diagram of drive component 5; Figure 9 yes Figure 8 Sectional view of 9-9; Figure 10 This is a three-dimensional schematic diagram of the isolation core 60; Figure 11 This is a three-dimensional assembly diagram of the first and second clips, the isolation core, the drive assembly, and the main pin; Figure 12 It is relative to Figure 11 Assembly diagram from the reverse perspective; Figure 13 This is a front-projection assembly diagram of the first and second clips, the isolation core, the drive assembly, and the main pin. Figure 14 yes Figure 13 The right-side projection view; Figure 15 yes Figure 11 A three-dimensional schematic diagram of an insulating headgear assembled on the basis of the aforementioned component; Figure 16 yes Figure 15 A three-dimensional schematic diagram of the support assembled on the basis of the aforementioned components; Figure 17 This is a partial frontal projection view of the head of the bipolar functional component 2; Figure 18 yes Figure 17 Sectional view at 18-18; Figure 19 This is a side projection diagram of electrosurgical instrument 1; Figure 20This is an exploded view of drive component 5a; Figure 21 This is a side projection schematic diagram of the drive component 5a; Figure 22 yes Figure 21 Sectional view of section 22-22; Figure 23 This is a three-dimensional schematic diagram of the first clip 30a; Figure 24 This is a three-dimensional schematic diagram of the second clip 40a; Figure 25 This is a three-dimensional schematic diagram of the insulating headgear 20a; Figure 26 This is an assembly diagram of the first clamp 30a, the second clamp 40a, the isolation core, the drive assembly 5a, and the main pin. Figure 27 It is relative to Figure 26 Assembly diagram from the reverse perspective Figure 28 yes Figure 26 A three-dimensional schematic diagram of the insulated head cover and support assembled on the basis of the component; Figure 29 This is a partial frontal projection view of the head of the bipolar functional component 2a; Figure 30 yes Figure 29 A 30-30 sectional view; In all views, the same label indicates the same part or component. Detailed Implementation

[0016] Embodiments of the present invention are disclosed herein; however, it should be understood that the disclosed embodiments are merely examples of the invention, which can be implemented in various ways. Therefore, the disclosure herein is not intended to be restrictive, but rather serves as the basis for the claims and to teach those skilled in the art how to use the invention. For ease of description, the side closer to the operator will be defined as the proximal end, and the side farther from the operator will be defined as the distal end.

[0017] Figures 1-16 A bipolar electrosurgical instrument 1 is described, comprising a bipolar electrosurgical functional component 2 and a handle component 3.

[0018] Figures 1-15 The structure and composition of the bipolar electrosurgical functional component 2 are described.

[0019] like Figure 1 The functional component 2 includes a support 10, an insulating head cover 20, a first clamp 30, a second clamp 40, an insulating core 60, and a drive component 5.

[0020] Figure 1 , Figure 2 and Figure 3 The structure and composition of the support 10 are depicted. The support 10 includes a support ring 11 and a first arm 12 and a second arm 13 extending distally, defining a U-shaped fork cavity 14. The first arm 12 includes a first arm hole 121, and the second arm 13 includes a second arm hole 131. A support shaft hole 15 penetrates the support ring 11 axially and communicates with the U-shaped fork cavity 14.

[0021] In one embodiment, the support 10 further includes a proximal extension tube 18. The extension tube 18 includes a proximal tube tail 181, a distal tube head 183, and a hollow tube body 182 extending therebetween. The distal tube head 183 is integrally connected to the support ring body 11, and the proximal tube tail 181 includes a tube tail annular groove 184.

[0022] Figure 1 , Figure 4 and Figure 5 The structure and composition of the insulating headgear 20 are described. The insulating headgear 20 includes a headgear ring 21 and a first insulating sheet 22 and a second insulating sheet 23 extending distally, defining a U-shaped insulating cavity 24; the headgear shaft hole 25 penetrates the headgear ring 21 and connects to the U-shaped insulating cavity 24. The distal end of the first insulating sheet 22 includes a first headgear hole 221 and a headgear flange 229 disposed along its edge; the distal end of the second insulating sheet 23 includes a second headgear hole 231 and a headgear flange 239 disposed along its edge.

[0023] Figure 1 and Figure 6 The structure and composition of the first clamp 30 are described. The first clamp 30 includes a first clamp head 31, a first clamp arm 33 and a first clamp shoulder 32 connected thereto, the first clamp shoulder 32 including a first shoulder hole 321 through it, and the proximal end of the first clamp arm 33 including a laterally extending first drive shaft 331.

[0024] The structure and composition of the second clip 40 are similar to those of the first clip 30, see reference. Figure 1 Understood. The second clamp 40 includes a second clamp head 41, a second clamp arm 43 and a second clamp shoulder 42 connected thereto, the second clamp shoulder 42 including a second shoulder hole 421 passing through it, and the proximal end of the second clamp arm 43 including a laterally extending second drive shaft 431.

[0025] Figure 7-9 The structure and composition of the drive assembly 5 are described. The drive assembly 5 includes a first drive block 51, a second drive block 53, and a third drive block 55. The first drive block 51 and the second drive block 53 are made of metal conductors, and the third drive block 55 is made of plastic material. The third drive block 55 is disposed between the first and second drive blocks and connects them into one unit, while the first and second drive blocks are insulated from each other.

[0026] In one implementation, the first drive block 51 includes a first drive block head 511 and a first drive block tail 515. The first drive block head 511 is provided with a first drive groove 512, and the first drive block tail 515 is provided with a first connecting groove 516. The second drive block 53 includes a second drive block head 531 and a second drive block tail 535. The second drive block head 531 is provided with a second drive groove 532, and the second drive block tail 535 is provided with a second connecting groove 536. The third drive block 55 includes a third drive block head 551 and a third drive block tail 555. The third drive block tail 555 is provided with a first connecting block 556 and a second connecting block 557 extending laterally to both sides, respectively.

[0027] In one implementation, the drive assembly 5 further includes an extension rod 57. The rod 57 includes a proximal rod tail 571, a distal rod head 573, and an extension rod bar 572 therebetween. The rod tail 571 includes a rod annular groove 574. The first drive block tail 515 includes a side extension block 519, and the rod head 573 is integrally connected to the side extension block 519.

[0028] like Figure 8 and Figure 9 The first drive block 51 and the second drive block 53 are respectively installed on both sides of the third drive block 55. The head of the third drive block 551 separates the heads of the first and second drive blocks, and the tail of the third drive block 555 separates the tails of the first and second drive blocks. The first drive groove 512 and the second drive groove 532 are stacked in an "X" shape.

[0029] like Figure 8 and Figure 9 In one implementation, the minimum distance A1 between the first and second drive blocks is ≤ 1.0 mm. The periphery of the third drive block includes drive block flanges 553 extending to both sides, which cover the peripheries of the first and second drive blocks, such that the creepage distance A0 between the first and second drive blocks is ≥ 1.0 mm (not shown in the figure). Those skilled in the art will readily understand that creepage distance is the shortest path measured along an insulating surface between two conductive components or between a conductive component and a protective interface of a device.

[0030] Figure 10 The structure and composition of the isolation core 60 are described. The isolation core 60 includes an isolation plate 61 and a laterally extending isolation shaft 62, with an isolation hole 63 penetrating the isolation shaft 62 and the isolation plate 61.

[0031] Figures 11-18 The assembly relationship of the functional component 2 is described.

[0032] like Figures 11-14The isolation core 60 is installed between the first shoulder 32 and the second shoulder 42, wherein the first shoulder hole 321, the isolation hole 63, and the second shoulder hole 421 are aligned. The isolation shaft 62 is inserted into the first shoulder hole 321, and the isolation plate 61 separates the first shoulder 32 and the second shoulder 42. In one embodiment, the thickness dimension of the isolation plate 61 (i.e., the minimum distance between the first shoulder and the second shoulder) B1 ≤ 1.0 mm, and the shape and size design of the isolation plate ensure that the creepage distance B0 of the first shoulder and the second shoulder is ≥ 1.0 mm (not shown in the figure) during the process of the first and second clamps opening from closed to their maximum angle.

[0033] See also Figures 11-14 The drive assembly 5 is installed between the first clamping arm 33 and the second clamping arm 43, wherein the first drive shaft 331 and the first drive groove 512 are matched to form a first drive pair, and the second drive shaft 431 and the second drive groove 532 are matched to form a second drive pair.

[0034] like Figure 15 After the aforementioned first clamp 30, second clamp 40, isolation core 60 and drive assembly 5 are assembled together, they are then inserted into the U-shaped insulating cavity 24 between the first insulating sheet 22 and the second insulating sheet 23 of the insulating head sleeve 20. The first clamp shoulder 32 matches the first insulating sheet 22, and the second clamp shoulder 42 matches the second insulating sheet 23. The first support hole 121, the second support hole 131, the first shoulder hole 321, the isolation hole 63 and the second shoulder hole 421 are aligned.

[0035] like Figure 16 After the aforementioned first clamp 30, second clamp 40, isolation core 60, drive assembly 5 and insulating head sleeve 20 are assembled together, they are then inserted into the U-shaped fork cavity 14 between the first support arm 12 and the second support arm 13 of the support 10. The first insulating sheet 22 matches the first support arm 12, and the second insulating sheet 23 matches the second support arm 13.

[0036] like Figure 16 , Figure 17 and Figure 18 The functional component 2 further includes a master pin 80, which passes through the first support arm hole 121, the second support arm hole 131, the first head sleeve hole 221, the second head sleeve hole 231, the first shoulder hole 321, the isolation hole 63, and the second shoulder hole 421, and fixes the first clamp 30, the second clamp 40, the insulating head sleeve 20, and the isolation core 60 together, wherein the first clamp 30, the second clamp 40 and the master pin 80 form a main rotating pair that can rotate relative to the master pin.

[0037] like Figure 17 and Figure 18The drive assembly 5 further includes an inner insulating tube 59 covering the outer surface of the pull rod 57, and the functional assembly 2 further includes an outer insulating tube 19 covering the outer surface of the extension tube 18. Figure 18 As shown, the first drive shaft 331 of the first clamp 30 contacts and conducts with the first drive groove 512 of the first drive block, and then conducts with the pull rod 57 to form a first circuit; the second clamp 40, the main pin 6, and the second support arm 13 conduct, and then conduct with the extension tube 18 to form a second circuit. The isolation core 60, the third drive block 55, and the insulating headgear 20 constitute an insulation system that isolates the aforementioned first and second circuits. Compared with the existing technology of bipolar electrosurgical instruments, this design greatly simplifies the structure of the insulation system, thereby increasing the reliability of the conductive circuit and the reliability of the insulation isolation. While simplifying the insulation system, more space is left for the conductive circuit, thereby increasing the strength of the conductive components, improving the structural strength of the bipolar instrument, and enhancing its grasping, cutting, and pulling functions.

[0038] like Figure 18 and Figure 19 The handle assembly 3 includes a first handle 71, a second handle 72, and a handle shaft 73. The handle shaft 73 connects the first handle 71 and the second handle 72 together. The first handle 71 and the second handle 72 are rotatable relative to the handle shaft 73. The tube tail 181 is connected to the first handle 71, and the pull rod tail 571 is connected to the second handle 72. The first handle and the second handle rotate relative to each other to open or close, forcing the pull rod 57 to move relative to the extension tube 18, thereby forcing the drive assembly to move, thereby forcing the first drive pair and the second drive pair to move and rotate, thereby driving the main rotary pair to rotate, realizing the rotational closing or opening of the first chuck and the second chuck.

[0039] The first handle 71 further includes a first electrode 711 and a second electrode 712. The first electrode 711 is in contact with the pull rod 57 and is electrically connected, while the second electrode 712 is in contact with the extension tube 18 and is electrically connected. When the wires of the electrosurgical device are connected to the first electrode and the second electrode, the aforementioned first circuit and second circuit are connected to the electrosurgical device. When the tissue to be cut or coagulated simultaneously contacts the first clamp and the second clamp, the first circuit and the second circuit are connected, and current flows through the tissue between the first clamp and the second clamp. Under the action of the current thermal effect, the tissue is cut or coagulated.

[0040] This structural design effectively reduces costs, allowing the bipolar clip to be used only once, while the handle assembly can be reused. This ensures the reliability of electrosurgical performance, reduces costs, and is more environmentally friendly.

[0041] like Figure 18In one embodiment, the thickness of the first clamp tail is smaller than that of the first clamp shoulder, the thickness of the second clamp tail is smaller than that of the second clamp shoulder, and the minimum distance C1 between the first clamp tail and the second clamp tail is ≥ 1.0 mm. This design ensures that sufficient air gap is maintained between the first clamp tail and the second clamp tail as the first clamp and the second clamp open from closed to their maximum angle.

[0042] Combination Figure 5 , Figure 16 and Figure 18 It is understood that the shape and size design of the headgear flange 229 ensures that the minimum creepage distance D0 between the first arm 12 and the first clamp shoulder 32 (the first arm 12 and the first clamp tail 33) is ≥1.0 mm (not shown in the figure) during the process of the first clamp and the second clamp opening from closed to the maximum angle.

[0043] Combination Figure 7 , Figure 11 , Figure 12 , Figure 14 and Figure 18 In another embodiment, the shape and size design of the drive block flange 553 ensures that when the first and second clamps move from closed to open to their maximum angle, the creepage distance X0 between the first drive block and the second clamp shoulder, the first drive block and the second clamp tail, the second drive block and the first clamp shoulder, and the second drive block and the first clamp tail is ≥1.0mm (not shown in the figure).

[0044] Figures 20-22 The assembly relationship of another drive component 5a is described.

[0045] The drive assembly 5a includes a first drive block 51a, a second drive block 53a, and a third drive block 55a. The first drive block 51a and the second drive block 53a are made of metal conductors, and the third drive block 55a is made of plastic material. The third drive block 55a is disposed between the first and second drive blocks and connects them into one unit, while the first and second drive blocks are mutually insulated.

[0046] In one implementation, the first drive block 51a includes a first drive block head 511a and a first drive block tail 515a. The first drive block head 511a is provided with a first drive shaft 512a, and the first drive block tail 515a is provided with a first connecting groove 516a. The second drive block 53a includes a second drive block head 531a and a second drive block tail 535a. The second drive block head 531a is provided with a second drive shaft 532a, and the second drive block tail 535a is provided with a second connecting groove 536a. The third drive block 55a includes a third drive block head 551a and a third drive block tail 555a. The third drive block tail 555a is provided with a first connecting block 556a and a second connecting block 557a extending laterally to both sides, respectively. The drive assembly 5 further includes an extension rod 57. The extension rod 57 includes a proximal extension rod tail 571, a distal extension rod head 573, and an extension rod bar 572 extending therefrom. The extension rod tail 571 includes a rod ring groove 574. The first drive block tail 515 includes a side extension block 519, and the pull rod head 573 is integrated with the side extension block 519.

[0047] like Figures 20-22 The first drive block 51a, the second drive block 53a, and the third drive block 55a can be connected into one piece by secondary injection molding, or by ultrasonic vibration welding, or by bonding with structural adhesives such as epoxy resin. In another embodiment, the third drive block 55a further includes a drive block through hole 559a penetrating the first connecting block 556a and the second connecting block 557a. The drive assembly 5a also includes a riveting pin 58 (not shown in the figure), which is riveted into the drive block through hole 559a, increasing the connection strength of the first drive block 51a, the second drive block 53a, and the third drive block 55a, while also increasing the shear strength of the first and second connecting blocks.

[0048] Figure 23 The structure and composition of another first clamp 30a are described. The first clamp 30a includes a first clamp head 31a, a first clamp arm 33a and a first clamp shoulder 32a connected thereto. The first clamp shoulder 32a includes a first shoulder hole 321a passing through it. The proximal end of the first clamp arm 33a includes a first transmission groove 331a.

[0049] Figure 24 The structure and composition of another second clamp 40a are described. The second clamp 40a includes a second clamp head 41a, a second clamp arm 43a and a second clamp shoulder 42a connected thereto, the second clamp shoulder 42a includes a second shoulder hole 421a passing through it, and the proximal end of the second clamp arm 43a includes a laterally extending second transmission groove 431a.

[0050] Figure 25 The structure and composition of another insulating headgear 20a are described. The insulating headgear 20a includes a first insulating sheet 22a, and a headgear hole 25a penetrates the insulating arm 22a.

[0051] like Figures 26-30 The first clip 30, the second clip 40, the insulating head cover 20, and the driving component 5 are replaced by the first clip 30a, the second clip 40a, the insulating head cover 20a, and the driving component 5a to form a new functional component 2a.

[0052] like Figure 26 and Figure 27 The isolation core 60 is installed between the first shoulder 32a and the second shoulder 42a, wherein the first shoulder hole 321a, the isolation hole 63, and the second shoulder hole 421a are aligned. The isolation shaft 62 is inserted into the first shoulder hole 321a, and the isolation plate 61 separates the first shoulder 32a and the second shoulder 42a. The drive assembly 5a is installed between the first arm 33a and the second arm 43a, wherein the first drive shaft 512a and the first transmission groove 331a are matched to form a first drive pair, and the second drive shaft 532a and the second transmission groove 431a are matched to form a second drive pair.

[0053] like Figure 28 ,like Figure 16 After the aforementioned first clamp 30, second clamp 40, isolation core 60, drive assembly 5 and insulating head cover 20 are assembled together, they are then inserted into the U-shaped fork cavity 14 between the first support arm 12 and the second support arm 13 of the support 10. The first insulating sheet 22 is installed between the first clamp shoulder 32a and the first support arm 12, wherein the first support arm hole 121, the second support arm hole 131, the head cover hole 25a, the first shoulder hole 321a, the isolation hole 63 and the second shoulder hole 421a are aligned.

[0054] like Figure 28 , Figure 29 and Figure 30 The functional component 2a further includes a master pin 6, which passes through the first arm hole 121, the second arm hole 131, the head cover hole 25a, the first shoulder hole 321a, the isolation hole 63, and the second shoulder hole 421a, and fixes the first clip 30a, the second clip 40a, the insulating head cover 20a, and the isolation core 60 together. The first clip 30a, the second clip 40a and the master pin 6 form a main rotating pair that can rotate relative to the master pin.

[0055] like Figure 29 and Figure 30 The drive assembly 5a further includes an inner insulating tube 59 covering the outer surface of the pull rod 57, and the functional assembly 2a further includes an outer insulating tube 19 covering the outer surface of the extension tube 18. Figure 30The first transmission groove 331a of the first clamp 30a contacts and conducts with the first drive shaft 512a of the first drive block, thereby forming a first circuit with the pull rod 57; the second clamp 40, the main pin 6, and the second support arm 13 are connected, thereby forming a second circuit with the extension tube 18. The isolation core 60, the third drive block 55a, and the insulating head sleeve 20a constitute an insulation system, isolating the aforementioned first and second circuits. The functional component 2a has similar beneficial effects to functional component 2.

[0056] The insulating headgear 20 and insulating headgear 20a have similar beneficial effects. The insulating headgear 20 can be injection molded from a plastic material with good flowability (e.g., PC, ABS, PP, PE, etc.). The insulating headgear 20a can be injection molded or vacuum-formed from a plastic material with good flowability. Based on the insulating headgear 20 and insulating headgear 20a, those skilled in the art should readily understand that by adapting the shapes of the insulating headgear 20 and insulating headgear 20a, insulating headgear conforming to the insulation requirements of this invention can be manufactured using heat-shrink tubing, heat-shrink film, or ordinary film through heat molding. Various manufacturing methods for the insulating headgear are not described in detail here.

[0057] The insulating core 50 can be machined or injection molded from high-strength plastic materials such as nylon (PA), polyoxymethylene (POM), polyphenylene sulfide (PPS), polysulfone (PSF), polyimide (PI), polyarylate (PAR), polyetheretherketone (PEEK), and fluoropolymers (PTFE, PVDF, PCTFE, PFA).

[0058] Those skilled in the art will understand that certain features described in this invention can be combined and recombined. For example, an insulating clamp sleeve and an insulating coating can be added simultaneously to the bipolar functional component 2; for example, an insulating head sleeve 20 can replace the insulating head sleeve 20b in the bipolar functional component 2c. Many more variations are conceivable. The terms "first" and "second" used herein are merely for distinguishing features and do not represent a sequential order. Furthermore, US patents US5489290, US5947996, US6340365, US7931667, US8551077, and US8926599 disclose various quick-connect and disconnect mechanisms for the core component and the reusable handle. These mechanisms, with slight modifications, can all be used for the connection between the bipolar core and the reusable handle of this invention. To date, many connection methods between the core and handle of minimally invasive surgical instruments have been disclosed in the field of minimally invasive surgical instruments. With slight modifications, these methods can all be used for the connection between the core component and the handle of this invention, and will not be exhaustive here.

Claims

1. A bipolar electrosurgical functional component comprising a first clip, a second clip, a support, a main pin, and a drive assembly, characterized in that: 1) The first clamp includes a first clamp arm, a first clamp tail and a first clamp shoulder connected thereto, the first clamp shoulder including a first clamp shoulder hole through it; the second clamp includes a second clamp arm, a second clamp tail and a second clamp shoulder connected thereto, the second clamp shoulder including a second clamp shoulder hole through it. 2) The support includes a support ring body and a first arm and a second arm that are integrally connected to it and extend laterally outward, forming a U-shaped fork structure. The support side hole penetrates the first arm and the second arm laterally, and the support shaft hole penetrates the support ring body axially. 3) The drive assembly includes a first drive block, a second drive block and a third drive block. The first drive block and the second drive block are made of metal conductors, and the third drive block is made of plastic material. The third drive block is disposed between the first and second drive blocks and connects the two into one unit, and the first and second drive blocks are mutually insulated and isolated. 4) The first clamp and the second clamp are installed between the first support arm and the second support arm. The main pin passes through the support side hole and the first and second clamp shoulder holes, and the first and second clamp shoulders are limited between the first and second support arms, forming a main rotating pair that can rotate around the main pin. 5) The drive assembly is installed between the first clamp tail and the second clamp tail, wherein the first drive block and the first clamp tail form a first drive pair that can slide relative to each other, wherein the second drive block and the second clamp tail form a second drive pair that can slide relative to each other. Moving the drive assembly forces the first drive pair and the second drive pair to slide simultaneously, thereby forcing the first clamp and the second clamp to rotate open and rotate close around the main rotating pair.

2. The functional component as claimed in claim 1, characterized in that: 1) The first drive block includes a first drive block head and a first drive block tail, the first drive block head is provided with a first drive groove, and the first drive block tail is provided with a first connecting groove; the second drive block includes a second drive block head and a second drive block tail, the second drive block head is provided with a second drive groove, and the second drive block tail is provided with a second connecting groove; the third drive block includes a third drive block head and a third drive block tail, and the third drive block tail is provided with a first connecting block and a second connecting block extending laterally to both sides respectively. 2) The first drive block and the second drive block are respectively installed on both sides of the third drive block. The head of the third drive block separates the heads of the first and second drive blocks, and the tail of the third drive block separates the tails of the first and second drive blocks. The first drive slot and the second drive slot are stacked in an "X" shape. The first connecting block matches the first connecting slot, and the second connecting block matches the second connecting slot. 3) The first tail clamp proximal end includes a first tail post, and the first drive groove and the first tail post are matched to form a first drive pair; the second tail clamp proximal end includes a second tail post, and the second drive groove and the second tail post are matched to form a second drive pair.

3. The functional component as claimed in claim 1, characterized in that: 1) The first drive block includes a first drive block head and a first drive block tail, the first drive block head is provided with a first drive shaft, and the first drive block tail is provided with a first connecting groove; the second drive block includes a second drive block head and a second drive block tail, the second drive block head is provided with a second drive shaft, and the second drive block tail is provided with a second connecting groove; the third drive block includes a third drive block head and a third drive block tail, the third drive block tail is provided with a first connecting block and a second connecting block extending laterally to both sides respectively; 2) The first drive block and the second drive block are respectively installed on both sides of the third drive block. The head of the third drive block separates the heads of the first and second drive blocks, and the tail of the third drive block separates the tails of the first and second drive blocks. The first connecting block matches the first connecting groove, and the second connecting block matches the second connecting groove. 3) The first tail clamp proximal end includes a first tail groove, and the first drive shaft and the first tail groove are matched to form a first drive pair; the second tail clamp proximal end includes a second tail groove, and the second drive shaft and the second tail groove are matched to form a second drive pair.

4. The functional component as described in claim 3, characterized in that: 1) The minimum distance A1 between the first drive block and the second drive block is ≤ 1.0 mm; 2) The periphery of the third drive block includes drive block flanges extending to both sides, and the drive block flanges cover the periphery of the first drive block and the second drive block, so that the minimum creepage distance A0 between the first drive block and the second drive block is ≥1.0mm.

5. The functional component as claimed in claim 1, characterized in that: 1) The minimum distance B1 between the first and second clips is ≤ 1.0 mm; 2) The functional component further includes an isolation core disposed between the first shoulder and the second shoulder, wherein the isolation core ensures that the minimum creepage distance B0 between the first shoulder and the second shoulder is ≥1.0 mm.

6. The functional component as claimed in claim 5, characterized in that: 1) The thickness of the first clamp tail is less than that of the first clamp shoulder, and the thickness of the second clamp tail is less than that of the second clamp shoulder; 2) The minimum distance C1 between the first clamp tail and the second clamp tail is ≥1.0mm.

7. The functional component as claimed in claim 5, characterized in that: 1) The functional component further includes an insulating head cover disposed between the first shoulder and the first arm, the insulating head cover insulating and isolating the first shoulder and the first tail from the first arm. 2) The insulating core includes an insulating plate and an insulating shaft, the insulating shaft penetrating the first shoulder hole and contacting the insulating head sleeve; 3) The main pin passes through the first arm hole, the insulating head cover, the isolation hole, the second shoulder hole and the second arm hole in sequence, and confines the first and second shoulders between the first and second arms to form a main rotating pair that can rotate around the main pin.

8. The functional component as claimed in claim 1, characterized in that: 1) The functional component further includes a metal outer tube and an insulating outer tube, wherein the insulating outer tube covers the outer surface of the metal outer tube and the metal outer tube is integrated with the support. 2) The functional component also includes a metal inner tie rod and an insulating inner rod, the insulating inner tube covering the outer surface of the metal inner tie rod, and the metal inner tie rod being integrated with the first drive block.

9. The functional component as claimed in claim 8, characterized in that: 1) The first clamp tail contacts and conducts with the first drive block, and then conducts with the pull rod to form a first circuit; the second clamp tail conducts with the main pin and the second support arm, and then conducts with the extension tube to form a second circuit. 2) The isolation core, the third drive block and the insulating head sleeve constitute an insulation system that isolates the aforementioned first circuit and second circuit.

10. A bipolar electrosurgical instrument, characterized in that, It includes the functional components as described in claim 9, and further includes a matching handle assembly, characterized in that; 1) The handle assembly includes a handle pivot and a first handle and a second handle that rotate around it; the first handle is connected to the outer metal tube, and the second handle is connected to the inner pull rod; the first and second handles rotate relative to each other to drive the inner pull rod to move relative to the outer tube, thereby forcing the drive assembly to move relative to the support, thereby driving the first and second clamps to rotate open or rotate close. 2) The first handle is provided with an electrode plug, which includes a first pole and a second pole; the first pole is connected to the inner metal pull rod, and then to the first drive block, and then to the first clamp; the second pole is connected to the outer metal tube, and then to the support, and then to the second clamp.

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