Bipolar electrotome

Abstract

The invention relates to a bipolar electrotome, comprising: a housing; the transmission assembly comprises a sleeve and a first transmission rod, one end of the first transmission rod is in threaded connection with an adjusting piece, the shell is provided with a first clamping groove, the adjusting piece is located in the first clamping groove and can rotate in the first clamping groove, the sleeve is provided with a first sliding groove, and the first transmission rod is provided with a second sliding groove; the clamping assembly comprises a first clamping piece, a second clamping piece, a first rotating shaft and a second rotating shaft, the first clamping piece is connected with the sleeve, the second clamping piece is hinged to the sleeve through the first rotating shaft, the first rotating shaft is in sliding connection with the second sliding groove, the second rotating shaft is connected with the first transmission rod, and the second clamping piece is provided with a third sliding groove; the second rotating shaft is slidably connected with the first sliding groove and the third sliding groove. The output end of the driving assembly is connected with the sleeve; the cutting assembly comprises a cutting piece, and the cutting piece is in sliding connection with the first clamping piece. According to the bipolar electrotome, the adjustment steps of the opening and closing postures can be simplified, and the adjustment range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of electric knife structures, in particular to a bipolar electric knife. Background Art

[0002] The bipolar electrosurgical unit is a commonly used energy surgical instrument in modern surgical operations. The bipolar electrosurgical unit uses high-frequency current to perform operations such as cutting, separation, and hemostasis on tissues in the scalpel. The bipolar electrosurgical unit includes a clamping mechanism and a cutting mechanism. After the tissue is clamped by the clamping mechanism, it is cut by the cutting mechanism, and finally a high-frequency current is applied to the clamping mechanism to achieve the purpose of hemostasis. In the production and manufacturing process of the bipolar electrosurgical unit, due to certain errors in the size of the parts and a certain range of deviation during the assembly process, the opening and closing posture of the clamping mechanism needs to be adjusted. At present, the clamping mechanism of the bipolar electrosurgical unit is driven by the cooperation of the handle and the connecting rod mechanism, which makes the opening and closing posture adjustment of the clamping mechanism more cumbersome and the adjustment range is small. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a bipolar electric knife, which can simplify the adjustment steps of the opening and closing postures and increase the adjustment range.

[0004] In order to solve the above technical problems, the present invention provides a bipolar electric knife, comprising: a shell, in which a power supply is provided; a transmission assembly, comprising a sleeve and a first transmission rod, one end of the first transmission rod is threadedly connected with an adjusting member, the shell is provided with a first slot, the adjusting member is located in the first slot and can rotate in the first slot, the sleeve is provided with a first slide, and the first transmission rod is provided with a second slide; a clamping assembly connected to the power supply, the clamping assembly comprises a first clamping member, a second clamping member, a first rotating shaft and a second rotating shaft, the first clamping member is connected to the end of the sleeve, the second clamping member is hinged to the sleeve through the first rotating shaft, the first rotating shaft is slidably connected to the second slide, the second rotating shaft is connected to the first transmission rod, the second clamping member is provided with a third slide, the second rotating shaft is slidably connected to the first slide and the third slide, and a clamping space is formed between the first clamping member and the second clamping member; a driving assembly, the output end of the driving assembly is connected to the sleeve; a cutting assembly, comprising a cutting member, and the cutting member is slidably connected to the first clamping member.

[0005] In one embodiment of the present invention, the drive assembly includes a first trigger and a first chuck, the sleeve is provided with a fourth slide groove, the first chuck is engaged with the fourth slide groove and can move along the fourth slide groove, and the first trigger is hinged to the housing and can resist the first chuck.

[0006] In one embodiment of the present invention, a first movable member is slidably mounted on the sleeve, the first trigger abuts against the first movable member, and a first elastic member is disposed between the first movable member and the first chuck.

[0007] In one embodiment of the present invention, the drive assembly also includes a second chuck, and the sleeve is further provided with a fifth slide groove, the second chuck is engaged with the fifth slide groove and can move along the fifth slide groove, the second chuck is located between the first trigger and the clamping assembly, and the first trigger is located between the first chuck and the second chuck.

[0008] In one embodiment of the present invention, the cutting assembly also includes a second trigger and a second transmission rod, one end of the second transmission rod is connected to the cutting member, the other end of the second transmission rod is connected to the second trigger, and the second trigger is hinged to the shell through a third rotating shaft.

[0009] In one embodiment of the present invention, a second movable part is slidably sleeved on the sleeve, a bend is provided at the end of the second transmission rod, the second movable part is provided with a sixth slide groove, the bend is engaged with the sixth slide groove, the second transmission rod is located in the sleeve, the sleeve is provided with a seventh slide groove, the bend extends from the seventh slide groove, and the second trigger can be abutted against the second movable part.

[0010] In one embodiment of the present invention, the second trigger is hinged to the second movable member via a fourth rotating shaft, the second trigger is provided with an eighth sliding groove, and the fourth rotating shaft is slidably connected to the eighth sliding groove.

[0011] In one embodiment of the present invention, a first electrode sheet is disposed on the first clamping member, the first electrode sheet is connected to the power supply member, and a plurality of protrusions are also disposed on the first clamping member, the protrusions penetrate through the first electrode sheet.

[0012] In one embodiment of the present invention, a connecting portion is provided at the end of the sleeve, the connecting portion is integrally formed with the sleeve, and the connecting portion is connected to the first clamping member.

[0013] In one embodiment of the present invention, a ninth sliding groove is provided on the first clamping member, the ninth sliding groove is arc-shaped, and the cutting member is slidably connected to the ninth sliding groove.

[0014] In one embodiment of the present invention, a rotating assembly is further included, wherein the rotating assembly includes a rotating wheel, and the rotating wheel is clamped with the sleeve.

[0015] In one embodiment of the present invention, a tenth slide groove is provided on the sleeve, the rotating wheel is connected to a third chuck, the third chuck is clamped with the tenth slide groove, and a second elastic member is provided between the rotating wheel and the cutting assembly.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art:

[0017] The bipolar electric knife described in the present invention adjusts the position of the second rotating shaft by rotating the adjusting member, thereby adjusting the distance between the first rotating shaft and the second rotating shaft, changing the angle between the first clamping member and the second clamping member when they are in the open state, thereby simplifying the adjustment steps of the opening and closing posture and increasing the adjustment range. The setting of the protrusion can prevent a short circuit caused by the contact between the first electrode sheet and the second electrode sheet, thereby improving the safety of the operation. The arc-shaped setting of the ninth slide groove can make the current more evenly distributed on the two electrode sheets, avoiding thermal damage to the tissue, and can also improve the stability of the cutting and prevent the two electrode sheets from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a bipolar electric knife of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the shell;

[0021] Figure 3 It is a schematic diagram of the assembly structure of the transmission component and the clamping component;

[0022] Figure 4 It is a schematic diagram of the structure of the casing;

[0023] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0024] Figure 6 yes Figure 3 A partial structural diagram of

[0025] Figure 7 yes Figure 6 A partial structural diagram of

[0026] Figure 8 yes Figure 7 A partial structural diagram of

[0027] Fig. 9 It is a schematic diagram of the structure of the drive component;

[0028] Fig.10 yes Fig. 9 A partial structural diagram of

[0029] Fig.11 It is a partial structural schematic diagram of the cutting assembly;

[0030] Fig.12 yes Fig.11 A partial structural diagram of

[0031] Fig.13 It is a structural schematic diagram of the rotating component.

[0032] Description of the accompanying drawings: 1. housing; 2. driving assembly; 3. cutting assembly; 4. rotating assembly; 5. transmission assembly; 6. clamping assembly; 11. induction member; 12. first boss; 13. first slot; 14. leaf spring; 15. second boss; 21. first trigger; 22. first pressure block; 23. second pressure block; 24. first chuck; 25. first movable member; 26. second chuck; 27. first elastic member; 31. second trigger; 32. third rotating shaft; 33. second movable member; 34. fourth rotating shaft; 35. second transmission rod; 36. sixth slide slot; 37. 7. bend; 38. eighth slide groove; 39. cutting member; 41. rotating wheel; 42. third chuck; 51. sleeve; 52. first transmission rod; 53. adjusting member; 54. fourth slide groove; 55. fifth slide groove; 56. seventh slide groove; 57. tenth slide groove; 58. guide rod; 61. first clamping member; 62. first electrode sheet; 63. bump; 64. ninth slide groove; 65. second clamping member; 66. first rotating shaft; 67. second rotating shaft; 68. third slide groove; 331. second elastic member; 511. first slide groove; 512. connecting part; 521. second slide groove. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0034] Reference Figures 1 to 6As shown, a bipolar electric knife of the present invention is characterized in that it comprises: a shell 1, in which a power supply is provided; a transmission assembly 5, comprising a sleeve 51 and a first transmission rod 52, one end of the first transmission rod 52 is threadedly connected with an adjusting member 53, the shell 1 is provided with a first card slot 13, the adjusting member 53 is located in the first card slot 13 and can rotate in the first card slot 13, the sleeve 51 is provided with a first slide groove 511, and the first transmission rod 52 is provided with a second slide groove 521; a clamping assembly 6, connected to the power supply, the clamping assembly 6 comprises a first clamping member 61, a second clamping member 65, a first rotating shaft 66 and a second rotating shaft 67, the first clamping member 61 Connected to the end of the sleeve 51, the second clamping member 65 is hinged to the sleeve 51 through the first rotating shaft 66, the first rotating shaft 66 is slidably connected to the second slide groove 521, the second rotating shaft 67 is connected to the first transmission rod 52, the second clamping member 65 is provided with a third slide groove 68, the second rotating shaft 67 is slidably connected to the first slide groove 511 and the third slide groove 68, and a clamping space is formed between the first clamping member 61 and the second clamping member 65; a driving component 2, the output end of the driving component 2 is connected to the first transmission rod 52; a cutting component 3, including a cutting member 39, and the cutting member 39 is slidably connected to the first clamping member 61.

[0035] In the bipolar electric knife of the present embodiment, the position of the second rotating shaft 67 is adjusted by rotating the adjusting member 53, thereby adjusting the distance between the first rotating shaft 66 and the second rotating shaft 67, changing the angle between the first clamping member 61 and the second clamping member 65 when in the open state, thereby simplifying the adjustment steps of the opening and closing posture and increasing the adjustment range. The driving assembly 2 can drive the sleeve 51 to move. When the end of the sleeve 51 moves away from the adjusting member 53, the second rotating shaft 67 is slidably connected with the first slide groove 511 and the third slide groove 68, so that the angle between the first clamping member 61 and the second clamping member 65 gradually decreases until it is in the clamping state. When the end of the sleeve 51 moves toward the adjusting member 53, the angle between the first clamping member 61 and the second clamping member 65 gradually increases until it is in the clamping open state.

[0036] The housing 1 is used for clamping the transmission assembly 5 and the driving assembly 2 . The housing 1 includes a handle. A power supply (not shown) is provided inside the handle. The power supply is used for connecting with the clamping assembly 6 .

[0037] The transmission assembly 5 includes a sleeve 51 and a first transmission rod 52, and the first transmission rod 52 is located in the sleeve 51. One end of the first transmission rod 52 is threadedly connected with an adjusting member 53, and the adjusting member 53 is in the shape of a disc. The end of the housing 1 away from the clamping assembly 6 is provided with a first boss 12, and the first boss 12 includes a first clamping groove 13. The adjusting member 53 is located in the first clamping groove 13 and can rotate in the first clamping groove 13. The sleeve 51 penetrates into the interior of the housing 1 from one end of the housing 1, and the first transmission rod 52 penetrates into the interior of the housing 1 from one end of the housing 1 and passes through the first clamping groove 13. The position of the first transmission rod 52 is adjusted by rotating the adjusting member 53. A guide rod 58 is also provided in the sleeve 51, and the first transmission rod 52 penetrates the guide rod 58 from the end of the guide rod 58. The power supply and the clamping assembly 6 are connected by a wire, and a groove for clamping the wire is provided on the side wall of the guide rod 58. The wire passes through the sleeve 51 and is clamped with the groove on the guide rod 58, thereby achieving the fixation of the wire. A first slide groove 511 is provided at a position of the sleeve 51 close to the clamping assembly 6 . The first slide groove 511 is parallel to the path direction of the first transmission rod 52 . A second slide groove 521 is provided on the side wall of the first transmission rod 52 . The second slide groove 521 is a flat groove.

[0038] Reference Figures 6 to 8 As shown, the clamping assembly 6 includes a first clamping member 61, a second clamping member 65, a first rotating shaft 66 and a second rotating shaft 67, and the clamping assembly 6 is also connected to the power supply. The first clamping member 61 is connected to the end of the sleeve 51, and the first clamping member 61 extends away from the first transmission rod 52. Preferably, the end of the sleeve 51 is provided with a connecting portion 512, and the sleeve 51 and the connecting portion 512 are integrally formed, thereby avoiding the cumulative error of the connection of multiple parts and the processing error of multiple parts, improving the overall accuracy, and avoiding debugging after the connection of multiple parts, thereby improving the assembly speed. The connecting portion 512 is connected to the bottom of the first clamping member 61.

[0039] The second clamping member 65 is hinged to the sleeve 51 through the first rotating shaft 66, the first rotating shaft 66 passes through the sleeve 51 and the second clamping member 65, and the first rotating shaft 66 is slidably connected to the second sliding groove 521, so that the first rotating shaft 66 can slide in the second sliding groove 521, and then when the rotating adjustment member 53 adjusts the first transmission rod 52, the position of the first rotating shaft 66 can be ensured to remain unchanged. The second rotating shaft 67 is parallel to the first rotating shaft 66, and the second rotating shaft 67 is connected to the first transmission rod 52. Specifically, the end side wall of the first transmission rod 52 is provided with a mounting groove, and the second rotating shaft 67 is clamped with the mounting groove, so that the position of the second rotating shaft 67 and the first transmission rod 52 is fixed, and then the first transmission rod 52 can drive the second rotating shaft 67 to move. The second clamping member 65 is provided with a third slide groove 68, and the second rotating shaft 67 is slidably connected with the first slide groove 511 and the third slide groove 68, that is, the second rotating shaft 67 passes through the first slide groove 511 and the third slide groove 68, and the distance between the first rotating shaft 66 and the second rotating shaft 67 is adjusted by the movement of the sleeve 51, so as to control the clamping and opening states of the first clamping member 61 and the second clamping member 65. A clamping space is formed between the first clamping member 61 and the second clamping member 65.

[0040] The first clamping member 61 is provided with a first electrode sheet 62, and the second clamping member 65 is provided with a second electrode sheet. The first electrode sheet 62 and the second electrode sheet are arranged opposite to each other, and the opposite sides of the first electrode sheet 62 and the second electrode sheet are clamping surfaces. The first electrode sheet 62 and the second electrode sheet are respectively connected to the power supply member.

[0041] The first clamping member 61 is also provided with a plurality of protrusions 63, which penetrate the first electrode sheet 62, and the ends of the plurality of protrusions 63 are at equal distances from the first electrode sheet 62, so that when the clamping assembly 6 is in a clamping state, a uniform gap is formed between the first clamping member 61 and the second clamping member 65. The protrusion 63 is made of insulating material and is integrally formed with the first clamping member 61. Preferably, the protrusion 63 is made of ceramic material, and the ceramic material has thermal stability. It has high mechanical strength and strong wear resistance, and ceramics have good biocompatibility, will not have inflammatory reactions due to its tissues, and can also maintain physical and chemical properties in high temperature environments. The smooth surface characteristics of ceramics can reduce the adhesion of tissue fragments and blood during surgery. The setting of the protrusion 63 can prevent short circuits caused by contact between the first electrode sheet 62 and the second electrode sheet, thereby improving the safety of the operation. The setting of the protrusion 63 can also reduce the contact area between the two electrode sheets and the clamped tissue, thereby reducing heat transfer and reducing thermal damage to surrounding healthy tissues. The setting of the bump 63 can also provide more precise control of electro-resection and electro-coagulation, due to the precise operation of the operator during the operation. Preferably, the bump 63 is cylindrical as a whole, so as to better adapt to the irregular shape of the tissue surface, reduce the displacement of the two electrode sheets caused by uneven pressure, improve the contact stability, and also reduce the wear rate. The surface of the cylindrical bump 63 is smooth, making it difficult for dirt and residue to adhere, and can also better disperse the pressure when under pressure, thereby improving the mechanical strength. Preferably, the diameter of the bump 63 is small, specifically 0.4-0.6mm, so that the control of electro-resection and electro-coagulation is more precise, and the current concentration area is limited, reducing thermal damage and tissue adhesion.

[0042] The overall structure of the first clamping member 61 and the second clamping member 65 is symmetrically arranged, and the width of the first clamping member 61 and the second clamping member 65 gradually decreases in the direction away from the first transmission rod 52. The first clamping member 61 is also provided with a ninth slide groove 64, which matches the width of the cutting member 39, and the ninth slide groove 64 is arc-shaped, so that the moving path of the cutting member 39 is arc-shaped. Preferably, the first clamping member 61 and the second clamping member 65 are both provided with a ninth slide groove 64 and the positions correspond, so that the cutting member 39 can complete the cutting when the clamping assembly 6 is in a clamping state. The arc-shaped ninth slide groove 64 helps the current to be more evenly distributed on the two electrode sheets, avoiding thermal damage to the tissue, and can also achieve better cutting force distribution, achieve efficient cutting, and improve the stability of the cutting, prevent the two electrode sheets from shifting, and reduce the probability of arcs and sparks.

[0043] Reference Fig. 9 and Fig.10As shown, the driving assembly 2 includes a first trigger 21 and a first chuck 24, and a sleeve 51 is provided with a fourth slide groove 54, and the fourth slide groove 54 is located near the adjusting member 53. The first chuck 24 is sleeved on the sliding sleeve, and a clamping block is provided on the inner ring of the first chuck 24, and the clamping block is clamped with the first slide groove 511 and can move along the fourth slide groove 54, and the clamping block abuts against one end of the fourth slide groove 54 near the adjusting member 53. The top end of the first trigger 21 is hinged to the housing 1 and can abut against the first chuck 24. Specifically, a first movable member 25 is slidably sleeved on the sleeve 51, and the first trigger 21 includes a receiving groove for accommodating the first movable member 25, and the edge of the receiving groove can abut against the first movable member 25, and the length and width of the receiving groove are greater than the diameter of the first movable member 25. A first elastic member 27 is provided between the first movable member 25 and the first chuck 24, and the first elastic member 27 can be regarded as a spring and sleeved on the sleeve 51. A leaf spring 14 is further provided between the first boss 12 and the first chuck 24. The cross section of the leaf spring 14 is rhombus-shaped. The sleeve 51 passes through the leaf spring 14. The two sides of the leaf spring 14 are respectively against the first chuck 24 and the first boss 12. The leaf spring 14 and the first elastic member 27 can provide a pressing force for the rotation of the first trigger 21. The first trigger 21 can apply pressure to the first chuck 24 in the direction of the adjustment member 53 through the rotation of the first trigger 21, so that the first chuck 24 drives the sleeve 51 to move, and then the clamping assembly 6 completes the clamping action. After the force applied to the first trigger 21 stops, the first trigger 21 is reset by the leaf spring 14 and the first elastic member 27. Preferably, it also includes a second chuck 26, and the sleeve 51 is also provided with a fifth slide groove 55. The matching structure of the second chuck 26 and the fifth slide groove 55 is the same as the matching structure of the first chuck 24 and the first slide groove 511, and will not be repeated. The second chuck 26 is clamped with the fifth slide groove 55 and can move along the fifth slide groove 55. The second chuck 26 abuts against one end of the fifth slide groove 55 away from the adjusting member 53. The second chuck 26 is located between the first trigger 21 and the clamping assembly 6, and the first trigger 21 is located between the first chuck 24 and the second chuck 26. The second chuck 26 is used to limit the reset position of the first trigger 21. Preferably, the first trigger 21 is also provided with a first pressure block 22, and a sensing component 11 is provided in the shell 1. The sensing component 11 and the power supply component are both connected to the controller. The sensing component 11 is located on the moving path of the first pressure block 22. By pressing the first trigger 21 to make the first pressure block 22 abut against the sensing component 11, the sensing component 11 can transmit a signal to the controller, thereby controlling the power supply component to supply power to the clamping assembly 6.

[0044] Reference Figure 7 , Fig.11 and Fig.12As shown, the cutting assembly 3 also includes a second trigger 31 and a second transmission rod 35, one end of the second transmission rod 35 is connected to the cutting member 39, the other end of the second transmission rod 35 is connected to the second trigger 31, and the second trigger 31 is hinged to the housing 1 through the third rotating shaft 32. Specifically, the second transmission rod 35 is located in the sleeve 51, and the guide rod 58 is also provided with a groove for clamping the second transmission rod 35, and the second transmission rod 35 can slide in the groove, thereby having a guiding effect on the second transmission rod 35. The sleeve 51 is slidably sleeved with a second movable member 33, and the second movable member 33 is provided with a sixth slide groove 36, which is located in the inner circle of the second movable member 33 and is arranged along the circumferential direction. The end of the second transmission rod 35 is provided with a bend 37, which is clamped with the sixth slide groove 36 and can move along the sixth slide groove 36, that is, the second transmission rod 35 can rotate, and the sleeve 51 is provided with a seventh slide groove 56, and the bend 37 extends from the seventh slide groove 56 and can move along the seventh slide groove 56. The top end of the second trigger 31 is hinged to the second movable member 33 through the fourth rotating shaft 34. The fourth rotating shaft 34 is parallel to the third rotating shaft 32 and is closer to the adjusting member 53 than the third rotating shaft 32. The second trigger 31 is provided with an eighth sliding groove 38. The fourth rotating shaft 34 is slidably connected to the eighth sliding groove 38. By pressing the second trigger 31, the second trigger 31 can abut against the second movable member 33, and the second movable member 33 is moved away from the adjusting member 53, so that the cutting member 39 extends into the ninth sliding groove 64 to complete the cutting action.

[0045] Reference Fig.13 As shown, the rotating assembly 4 includes a rotating wheel 41, which is engaged with the sleeve 51. Specifically, the housing 1 is further provided with a second boss 15, and the second boss 15 is provided with a second slot. The rotating wheel 41 is engaged with the second slot and can rotate in the second slot, and the rotating wheel 41 protrudes from the housing 1. The rotating wheel 41 is sleeved on the sleeve 51, and the sleeve 51 is provided with a tenth slide groove 57. The rotating wheel 41 is connected to the third chuck 42. The matching structure of the third chuck 42 and the tenth slide groove 57 is the same as the matching structure of the first chuck 24 and the first slide groove 511, which will not be repeated. By rotating the rotating wheel 41, the sleeve 51 is driven to rotate, and then the clamping assembly 6 can be rotated, so that the position of the clamping assembly 6 is adjusted. Preferably, a second elastic member 331 is also provided between the rotating wheel 41 and the second movable member 33 of the cutting assembly 3, and the second elastic member 331 is used to reset the second trigger 31. Preferably, the first trigger 21 is further provided with a second pressure block 23, which abuts against the second trigger 31, thereby limiting the movement range of the second trigger 31 and preventing the second trigger 31 from being accidentally touched and the cutting member 39 from extending when the first trigger 21 is not pressed.

[0046] When in use, the position of the second rotating shaft 67 is adjusted by rotating the adjusting member 53, thereby adjusting the distance between the first rotating shaft 66 and the second rotating shaft 67, and changing the angle between the first clamping member 61 and the second clamping member 65 when they are in the open state. The angle of the clamping assembly 6 is adjusted by rotating the rotating wheel 41. By pressing the first trigger 21, the sleeve 51 is driven to move away from the adjusting member 53, so that the first clamping member 61 and the second clamping member 65 complete the clamping action, and by pressing the second trigger 31, the cutting member 39 moves along the ninth slide groove 64, thereby completing the cutting action. At the same time, the power supply member supplies power to the clamping assembly 6, thereby completing the electrocoagulation hemostasis, and the first trigger 21 and the second trigger 31 are released, so that the clamping assembly 6 is in the open state, and the cutting member 39 is reset.

[0047] A bipolar electric knife of the present invention adjusts the position of the second rotating shaft 67 by rotating the adjusting member 53, thereby adjusting the distance between the first rotating shaft 66 and the second rotating shaft 67, changing the angle between the first clamping member 61 and the second clamping member 65 when they are in the open state, thereby simplifying the adjustment steps of the opening and closing posture and increasing the adjustment range. The setting of the protrusion 63 can prevent a short circuit caused by the contact between the first electrode sheet 62 and the second electrode sheet, thereby improving the safety of the operation. The arc-shaped setting of the ninth slide groove 64 can make the current more evenly distributed on the two electrode sheets, avoiding thermal damage to the tissue, and can also improve the stability of the cutting and prevent the two electrode sheets from shifting.

[0048] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A bipolar electrosurgical unit, characterized in that: include: A housing, wherein a power supply is provided in the housing; The transmission assembly comprises a sleeve and a first transmission rod, one end of the first transmission rod is threadedly connected with an adjusting member, the housing is provided with a first slot, the adjusting member is located in the first slot and can rotate in the first slot, the sleeve is provided with a first slide groove, and the first transmission rod is provided with a second slide groove; A clamping assembly connected to the power supply, the clamping assembly comprising a first clamping assembly, a second clamping assembly, a first rotating shaft and a second rotating shaft, the first clamping assembly is connected to the end of the sleeve, the second clamping assembly is hinged to the sleeve through the first rotating shaft, the first rotating shaft is slidably connected to the second slide groove, the second rotating shaft is connected to the first transmission rod, the second clamping assembly is provided with a third slide groove, the second rotating shaft is slidably connected to the first slide groove and the third slide groove, and a clamping space is formed between the first clamping assembly and the second clamping assembly; A driving assembly, wherein an output end of the driving assembly is connected to the sleeve; The cutting assembly comprises a cutting piece, wherein the cutting piece is slidably connected to the first clamping piece.

2. The bipolar electrosurgical unit according to claim 1, characterized in that: The driving assembly includes a first trigger and a first chuck, the sleeve is provided with a fourth slide groove, the first chuck is engaged with the fourth slide groove and can move along the fourth slide groove, and the first trigger is hinged to the housing and can abut against the first chuck.

3. The bipolar electrosurgical unit according to claim 2, characterized in that: A first movable member is slidably sleeved on the sleeve, the first trigger abuts against the first movable member, and a first elastic member is arranged between the first movable member and the first chuck.

4. The bipolar electrosurgical unit according to claim 3, characterized in that: The drive assembly also includes a second chuck, and the sleeve is also provided with a fifth slide groove, the second chuck is engaged with the fifth slide groove and can move along the fifth slide groove, the second chuck is located between the first trigger and the clamping assembly, and the first trigger is located between the first chuck and the second chuck.

5. The bipolar electrosurgical unit according to claim 1, characterized in that: The cutting assembly also includes a second trigger and a second transmission rod, one end of the second transmission rod is connected to the cutting member, the other end of the second transmission rod is connected to the second trigger, and the second trigger is hinged to the housing via a third rotating shaft.

6. The bipolar electrosurgical unit according to claim 5, characterized in that: A second movable part is slidably sleeved on the sleeve, a bend is provided at the end of the second transmission rod, the second movable part is provided with a sixth slide groove, the bend is engaged with the sixth slide groove, the second transmission rod is located in the sleeve, the sleeve is provided with a seventh slide groove, the bend extends out from the seventh slide groove, and the second trigger can be against the second movable part.

7. The bipolar electrosurgical unit according to claim 6, characterized in that: The second trigger is hinged to the second movable member via a fourth rotating shaft, the second trigger is provided with an eighth sliding groove, and the fourth rotating shaft is slidably connected to the eighth sliding groove.

8. The bipolar electrosurgical unit according to claim 1, characterized in that: The first clamping member is provided with a first electrode sheet, the first electrode sheet is connected to the power supply member, and the first clamping member is also provided with a plurality of protrusions, the protrusions penetrate through the first electrode sheet.

9. The bipolar electrosurgical unit according to claim 1, characterized in that: A connecting portion is provided at the end of the sleeve, the connecting portion is integrally formed with the sleeve, and the connecting portion is connected to the first clamping member.

10. The bipolar electrosurgical unit according to claim 1, characterized in that: The first clamping member is provided with a ninth sliding groove, the ninth sliding groove is arc-shaped, and the cutting member is slidably connected to the ninth sliding groove.

11. The bipolar electrosurgical unit according to claim 1, characterized in that: It also includes a rotating assembly, which includes a rotating wheel, and the rotating wheel is clamped with the sleeve.

12. The bipolar electrosurgical unit according to claim 11, characterized in that: The sleeve is provided with a tenth sliding groove, the rotating wheel is connected with a third chuck, the third chuck is clamped with the tenth sliding groove, and a second elastic member is provided between the rotating wheel and the cutting assembly.

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