A high-frequency electrosurgical instrument

Abstract

The present invention discloses a high-frequency electrosurgical instrument, which belongs to the field of surgical instruments. The high-frequency electrosurgical instrument of the present invention comprises: a main body; an outer rod, one end of the outer rod is connected to the main body, and the other end of the outer rod is arranged away from the main body; an end effector, the end effector is arranged at the end of the outer rod away from the main body, and the end effector includes two clamp heads; a clamp head control assembly, the clamp head control assembly is used to control the opening and closing of the two clamp heads to clamp tissue; a blade control assembly, the blade control assembly includes a trigger, a push rod and a blade push rod. Compared with existing high-frequency electrosurgical instruments, the high-frequency electrosurgical instrument of the present invention has a more compact structure, more stable control, and higher safety and effectiveness.

Description

Technical Field

[0001] The present invention relates to the field of surgical instruments, and more particularly, to a high-frequency electrosurgical instrument. Background Art

[0002] High-frequency electrosurgical instruments are surgical instruments used for electrocoagulation hemostasis and / or tissue cutting during surgery, and have been widely used clinically. At present, high-frequency electrosurgical instruments can be used not only in open surgery, but also in laparoscopic surgery such as laparoscopy. High-frequency electrosurgical instruments generally include two structures: gun-type and clamp-type. Among them, high-frequency electrosurgical instruments with gun-type structures generally include clamps with electrodes and handles. The high-frequency electrosurgical instruments are further connected to a high-frequency generator and a foot switch through connecting wires. The high-frequency generator outputs high-frequency current, and the current provides high-frequency electrical energy to the collective tissue through electrodes respectively arranged on the two clamps, so that the tissue between the two electrodes is dehydrated and coagulated, thereby achieving the purpose of electrocoagulation hemostasis.

[0003] Current gun-style high-frequency electrosurgical instruments include a housing, a handle assembly, a rotating assembly, and an end effector assembly. These conventional gun-style instruments utilize a stacked structure within the barrel, consisting of an inner push rod, an inner sleeve, and an outer sleeve. Due to the limited space within the barrel, the design of the components within the barrel is limited, resulting in reduced component strength and a shortened instrument lifespan. This space limitation complicates sealing between components, creating the risk of air leakage and causing complications during laparoscopic surgery. Summary of the Invention

[0004] In order to solve the above problems in the prior art, the present invention proposes a high-frequency electrosurgical instrument, comprising: a main body;

[0005] An outer rod, one end of the outer rod is connected to the main body, and the other end of the outer rod is arranged away from the main body;

[0006] An end effector is provided at an end of the outer rod away from the main body, and includes two clamp heads;

[0007] The clamp head control assembly is used to control the opening and closing of the two clamp heads to clamp tissue; the clamp head control assembly includes a pull rod, a wrench, and a transmission mechanism. The pull rod is at least partially disposed in the outer rod, and the front end of the pull rod is in transmission connection with the clamp heads. The wrench is in transmission connection with the pull rod through the transmission mechanism.

[0008] The blade control assembly includes a trigger, a push rod and a push rod;

[0009] At least a portion of the push rod is disposed within the main body, and at least a portion is disposed within the outer rod; an end of the push rod proximate to the main body is connected to the push rod, and an end of the push rod distal to the main body is provided with a cutting blade configured to cut tissue;

[0010] The push rod is arranged inside the main body, and the push rod is provided with at least a first connecting part parallel to the push rod. The axis of the first connecting part is staggered with the axis of the push rod. The trigger is connected to the first connecting part through a connecting rod group to drive the cutting blade to move along the axis direction of the push rod; the connecting rod group includes at least two connecting rods hinged to each other.

[0011] Preferably, the push rod is configured to be L-shaped, comprising a first connecting portion, and a second connecting portion perpendicular to the push rod and connected to the first connecting portion; the second connecting portion is detachably connected to the push rod via a mounting pin;

[0012] The blade control assembly further includes a blade resetting device, which is sleeved on the blade pushing rod, and an end of the blade resetting device away from the cutting blade cooperates with the second connecting portion;

[0013] A sliding groove parallel to the pusher rod is provided inside the main body. At least one pin is provided on the first connecting portion, and the first connecting portion is slidably connected to the inside of the main body through the cooperation between the pin and the sliding groove.

[0014] Preferably, the connecting rod assembly includes a first connecting rod and a second connecting rod, one end of the second connecting rod is hinged to the first connecting rod, and the other end of the second connecting rod is hinged to the push rod; one end of the first connecting rod is provided with a U-shaped groove, and the first connecting portion can be accommodated in the U-shaped groove;

[0015] The second connecting rod is hinged to the U-shaped groove through the first fixing pin, and the first connecting rod is rotatably connected to the main body through the second fixing pin;

[0016] One end of the second connecting rod away from the first connecting rod is rotatably connected to the push rod through a third fixing pin, and the second connecting rod is used for driving the push rod to move in translation.

[0017] Preferably, the trigger is slidably disposed on the main body and can move one end of the first connecting rod away from the U-shaped groove during sliding, thereby driving the first connecting rod to rotate around the second fixing pin;

[0018] A first limiting portion and a driving portion are provided on the trigger, and a limiting groove parallel to the pusher rod is opened on the main body. The trigger is slidably arranged on the main body through the cooperation of the first limiting portion and the limiting groove; the driving portion contacts the first connecting rod to move the first connecting rod away from one end of the U-shaped groove.

[0019] Preferably, the cutting blade is configured as a structure with a hollow center, and the cutting blade is a flexible structure.

[0020] Preferably, the wrench includes a control portion and a third connecting portion, the control portion is at least partially located outside the main body, the third connecting portion includes a first fixing bolt and an arc-shaped rotation groove, the wrench is rotatably connected to the main body via the first fixing bolt of the third connecting portion, and the wrench is transmission-connected to the pull rod via cooperation between the rotation groove and the transmission mechanism;

[0021] The transmission mechanism includes a first transmission rod, the first transmission rod includes a second connecting part and a clamping part, the second connecting part is provided with a second fixing bolt and a rotating pin; the first transmission rod is rotatably connected to the main body through the second fixing bolt; the rotating pin is in transmission cooperation with the rotating groove, and the clamping part is in rotation cooperation with the pull rod.

[0022] Preferably, the clamp head control assembly further comprises a first fixing sleeve, the first fixing sleeve is arranged on the pull rod, the outer ring of the first fixing sleeve is provided with two sections of flanges, and the clamping portion is clamped between the two sections of flanges;

[0023] The clamp head control assembly further includes a second fixed sleeve, the first fixed sleeve is slidably connected to the pull rod in a sleeve-like manner, the second fixed sleeve is fixedly connected to the pull rod in a sleeve-like manner, and an elastic member is provided between the first fixed sleeve and the second fixed sleeve;

[0024] The second fixing sleeve is provided with a protrusion, and the clamp head control assembly further includes a clamp head reset device, which is sleeved on the second fixing sleeve and has one end abutting against the protrusion and the other end abutting against the main body;

[0025] The protrusion divides the second fixed sleeve into a first section close to the first fixed sleeve and a second section away from the first fixed sleeve, and the clamp head resetting device is sleeved on the second section of the second fixed sleeve; the clamp head control assembly also includes a clamping spring, one end of the clamping spring is sleeved on the first fixed sleeve, and the other end of the clamping spring is sleeved on the first section; one end of the clamping spring abuts against one of the two flanges close to the second fixed sleeve, and the other end of the clamping spring abuts against the protrusion.

[0026] Preferably, the spring constant of the clamp head resetting device is smaller than the spring constant of the clamping spring.

[0027] Preferably, a second limiting portion is provided on the pull rod, and the width of the second limiting portion is greater than the inner diameter of the first fixing sleeve.

[0028] Preferably, the edges on both sides of the clamping portion are configured as smooth arc surfaces.

[0029] Preferably, the front end of the pull rod is provided with a first connecting hole and a second connecting hole, and the pliers head is provided with a third connecting hole and a fourth connecting hole, the first connecting hole and the fourth connecting hole are oblong holes, and the second connecting hole and the third connecting hole are round holes; the two pliers heads are connected to the outer rod through a first connecting pin, the third connecting hole and the first connecting hole can be movably matched through the first connecting pin, and the fourth connecting hole and the second connecting hole can be movably matched through the second connecting pin.

[0030] Compared with the prior art, the above technical solution of the present invention has the following advantages:

[0031] The present invention provides a high-frequency electrosurgical surgical instrument, which includes a main body, an outer rod and an end effector, wherein the end effector includes two forceps heads; it also includes a blade control assembly, which is used to control the extension and retraction of the cutting blade to cut tissue; the blade control assembly includes a push rod and a connecting rod group, the push rod is arranged in an L shape, and the connecting rod group includes a first connecting rod and a second connecting rod, the first connecting rod is connected to the trigger, and the second connecting rod is connected to the push rod; when the trigger is pulled, the first connecting rod will be driven to rotate, and then the second connecting rod will be driven to rotate, and the second connecting rod will drive the push rod forward to push the cutting blade out to cut the tissue. By configuring the connecting rod group so that the first connecting rod cooperates with the second connecting rod, the structure of the blade control assembly becomes more compact and the control of the cutting blade becomes more stable. In addition, the high-frequency electrosurgical surgical instrument of the present invention further includes a forceps head control assembly, which includes a wrench and a transmission mechanism. The wrench includes a control portion and a third connecting portion. The third connecting portion is configured to have an arc-shaped rotation slot, which rotates with the second connecting portion of the transmission mechanism, thereby reducing the movement stroke of the forceps head control assembly during the control process, making the overall structure more compact and making the control of the forceps head more stable. In addition, the forceps head control assembly further includes a clamping spring, which, through the design of the clamping spring, can provide and maintain an appropriate clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 1 is a schematic diagram of the overall structure of the high-frequency electrosurgery instrument of the present invention;

[0034] Figure 2 This is a schematic structural diagram of the high-frequency electrosurgical surgical instrument of the present invention in a closed state;

[0035] Figure 3 1 is a schematic structural diagram of the high-frequency electrosurgical instrument of the present invention in a blade-pushing state;

[0036] Figure 4This is a schematic diagram of the three-dimensional structure of the clamp head control assembly of the high-frequency electrosurgical surgical instrument of the present invention. Figure 1 ;

[0037] Figure 5 1 is a schematic structural diagram of a blade control assembly of a high-frequency electrosurgical surgical instrument according to the present invention;

[0038] Figure 6 This is a schematic structural diagram of the blade control assembly of the high-frequency electrosurgical surgical instrument of the present invention in a blade-pushing state;

[0039] Figure 7 1 is a schematic structural diagram of the first connecting rod of the high-frequency electrosurgical surgical instrument of the present invention;

[0040] Figure 8 It is a schematic structural diagram of the clamp head control assembly of the high-frequency electrosurgical surgical instrument of the present invention;

[0041] Figure 9 This is a schematic diagram of the three-dimensional structure of the clamp head control assembly of the high-frequency electrosurgical surgical instrument of the present invention. Figure 2 ;

[0042] Figure 10 It is an exploded view of the clamp head control assembly of the high-frequency electrosurgical surgical instrument described in the present invention.

[0043] Among them: 1. Main body; 2. Outer rod; 3. End effector; 4. Pull rod; 5. Wrench; 5-1. Control part; 5-2. Third connecting part; 5-3. First fixing bolt; 5-4. Rotating slot; 6. First transmission rod; 6-1. Fourth connecting part; 6-2. Clamping part; 6-3. Second fixing bolt; 6-4. Rotating pin; 7. Trigger; 8. Push rod; 8-1. First connecting part; 8-2. Second connecting part; 9. Push rod; 10. Cutting blade; 11. Blade reset device; 12. First connecting rod; 12-1. U-shaped groove; 13. Second connecting rod; 14. First fixing pin; 15. Second fixing pin; 16. Third fixing pin; 17. First fixing sleeve; 18. Second fixing sleeve; 19. Clamp head reset device; 20. Clamping spring; 21. Second limiting portion; 22. First connecting hole; 23. Second connecting hole; 24. Third connecting hole; 25. Fourth connecting hole; 26. First connecting pin; 27. Second connecting pin. DETAILED DESCRIPTION

[0044] Specific embodiments of the high-frequency electrosurgical instrument according to the present invention will be described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain this patent and are not to be construed as limiting this patent.

[0045] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations of this patent.

[0046] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "provided with" should be understood in a broad sense. For example, they can mean fixedly connected and provided with, detachably connected or provided with, or integrally connected or provided with. Those skilled in the art can understand the specific meanings of the above terms in this patent based on specific circumstances.

[0047] like Figure 1-3 As shown, this embodiment provides a high-frequency electrosurgical instrument, including a main body 1, an outer rod 2 and an end effector 3, one end of the outer rod 2 is rotatably connected to the main body 1, and the other end of the outer rod 2 is connected to the end effector 3.

[0048] In this embodiment, the end effector 3 includes two forceps heads, which can rotate and open and close at a large angle, and are used to contact the tissue to achieve the function of electrocoagulation or cutting; the main body 1 is used to accommodate the forceps head control component and the blade control component for controlling the end effector 3.

[0049] like Figure 5-7 As shown, this embodiment provides a high-frequency electrosurgical instrument, which includes a blade control assembly, which includes a trigger 7, a push rod 8, and a blade push rod 9. The blade push rod 9 is partially disposed within the main body 1 and the other portion is disposed within the outer rod 2. The end of the blade push rod 9 near the main body 1 is connected to the push rod 8, and the end of the blade push rod 9 away from the main body 1 is provided with a cutting blade 10. The cutting blade 10 can be configured as a hollow structure, and the cutting blade 10 can be a flexible structure, or the cutting blade 10 can be at least partially made of a flexible material. The cutting blade 10 is used to cut tissue. In this embodiment, the hollow structure of the cutting blade 10 can effectively prevent the cutting blade 10 from sticking to the tissue when cutting, thereby ensuring the effectiveness and safety of the high-frequency electrosurgical instrument of the present invention. At the same time, the flexible structure of the cutting blade 10 also ensures that the cutting blade 10 can slide within the blade channel disposed in the end effector 3. Especially when the blade channel is configured as a curved shape, the flexible cutting blade 10 can more easily slide along the blade channel.

[0050] The push rod 8 is arranged inside the main body 1. The push rod 8 is arranged in an L shape and includes a first connecting portion 8-1. The first connecting portion 8-1 is arranged parallel to the push rod 9, and the axis of the first connecting portion 8-1 is staggered with the axis of the push rod 9; the trigger 7 is connected to the first connecting portion 8-1 through a connecting rod group to drive the cutting blade 10 to move along the axis of the push rod 9; the push rod 8 also includes a second connecting portion 8-2, the second connecting portion 8-2 is perpendicular to the push rod 9 and connected to the first connecting portion 8-1, and the second connecting portion 8-2 is detachably connected to the push rod 9 through a mounting pin. As an example, a positioning pin can be provided on the push rod 8, and the positioning pin is used to cooperate with the positioning groove opened on the main body 1 so that the push rod 8 can slide along the direction in which the positioning groove extends, thereby driving the push rod 9 to move along the axis of the push rod 9.

[0051] As an example, the connecting rod group may include a first connecting rod 12 and a second connecting rod 13 which are hinged to each other, wherein one end of the second connecting rod 13 is hinged to the first connecting rod 12, and the other end of the second connecting rod 13 is hinged to the push rod 8; a U-shaped groove 12-1 is provided at one end of the first connecting rod 12, and the first connecting part 8-1 is accommodated in the U-shaped groove 12-1; the second connecting rod 13 is hinged to the U-shaped groove 12-1 through a first fixing pin 14, and the first connecting rod 12 is rotatably connected to the main body through a second fixing pin 15, and the end of the second connecting rod 13 away from the first connecting rod 12 is rotatably connected to the push rod 8 through a third fixing pin 16, and the second connecting rod 13 is used to drive the push rod 8 to move in translation.

[0052] In this example, refer to Figures 5 and 6 Under the transmission action of the first connecting rod 12 and the second connecting rod 13, the displacement of the end of the second connecting rod 13 hinged to the first connecting rod 12 in the direction perpendicular to the axis of the push rod 9 offsets the displacement of the end of the first connecting rod 12 hinged to the second connecting rod 13 in the direction perpendicular to the axis of the push rod 9 when the first connecting rod 12 rotates around the second fixed pin, that is, when the second connecting rod 13 pulls / pushes the push rod 8 to move, the second connecting rod 13 is roughly arranged in parallel with the push rod 8, so that the push rod 8 is almost only subjected to the force along the axial direction of the first connecting part 8-1, so that the push rod 8 is more stable when moving, and the push rod 9 connected to the push rod 8 is more stable when moving, further improving the safety and stability of the operation.

[0053] The blade control assembly also includes a blade reset device 11, which is sleeved on the push rod 9, and the end of the blade reset device 11 away from the cutting blade 10 cooperates with the second connecting part 8-2; a sliding groove parallel to the push rod 9 is opened inside the main body 1, and a pin is provided on the first connecting part 8-1, and is slidably connected to the inside of the main body 1 through the cooperation of the pin and the sliding groove.

[0054] The trigger 7 is slidably mounted on the main body 1 and is capable of moving the first connecting rod 12 away from one end of the U-shaped groove 12-1 during the sliding motion, thereby driving the first connecting rod 12 to rotate about the second fixing pin 15. As an example, the trigger 7 is provided with a first limiting portion and a driving portion. The main body 1 is provided with a limiting groove arranged parallel to the pusher rod 9. The trigger 7 is slidably mounted on the main body 1 through the cooperation of the first limiting portion and the limiting groove. The driving portion contacts the first connecting rod 12 to move the first connecting rod 12 away from one end of the U-shaped groove 12-1.

[0055] In this embodiment, pulling the trigger 7 and compressing the blade reset device 11 can drive the first connecting rod 12 to rotate about the first fixing pin 14, thereby driving the second connecting rod 13 to move forward, and further driving the first connecting portion 8-1 of the push rod 8 to move forward, thereby causing the push rod 9 to extend outward, allowing the cutting blade 10 to cut the tissue. After the tissue is cut, the trigger 7 is released, and the push rod 8 can return to its original position under the action of the elastic potential energy of the blade reset device 11, thereby retracting the cutting blade 10. By providing an L-shaped push rod 8 and the mutually hinged first and second connecting rods 12 and 13, the overall structure is made more compact, the movement range of the trigger 7 is reduced, and the stability of the movement process is ensured, thereby ensuring the safety and effectiveness of the high-frequency electrosurgical surgical instrument.

[0056] like Figure 8-10 As shown, the high-frequency electrosurgical surgical instrument provided in this embodiment also includes a clamp head control assembly, which is used to control the opening and closing of the two clamp heads to clamp tissue; the clamp head control assembly includes a pull rod 4, a wrench 5, and a transmission mechanism, the pull rod 4 is partially arranged in the outer rod 2, and the front end of the pull rod 4 is transmission-connected to the clamp head, and the wrench 5 is transmission-connected to the pull rod 4 through the transmission mechanism.

[0057] The wrench 5 includes a control portion 5-1 and a third connecting portion 5-2. The control portion 5-1 is at least partially located outside the main body 1. The third connecting portion 5-2 includes a first fixing bolt 5-3 and an arcuate rotation slot 5-4. The wrench 5 is rotatably connected to the main body 1 via the first fixing bolt 5-3 of the third connecting portion 5-2. The wrench 5 is transmission-connected to the pull rod 4 through the cooperation of the rotation slot 5-4 and the transmission mechanism. By providing a transmission mechanism between the wrench 5 and the pull rod 4, rather than directly connecting the wrench 5 to the pull rod 4, this embodiment can significantly improve the compactness of the clamp head control assembly within the main body 1, leaving sufficient space for other components.

[0058] As an example, the transmission mechanism includes a first transmission rod 6, the first transmission rod 6 includes a fourth connecting part 6-1 and a clamping part 6-2, the fourth connecting part 6-1 is provided with a second fixing bolt 6-3 and a rotating pin 6-4, the first transmission rod 6 is rotatably connected to the main body 1 through the second fixing bolt 6-3, the rotating pin 6-4 is in transmission cooperation with the rotating groove 5-4, and the clamping part 6-2 is in transmission cooperation with the pull rod 4.

[0059] The clamp head control assembly also includes a first fixed sleeve 17, which is arranged on the pull rod 4. The outer ring of the first fixed sleeve 17 is provided with two flanges, and the clamping part 6-2 is clamped between the two flanges. The edges on both sides of the clamping part 6-2 are set to smooth arc surfaces. When the wrench 5 is pulled to drive the first transmission rod 6 to rotate, the clamping part 6-2 also rotates between the two flanges.

[0060] The pliers head control assembly also includes a second fixed sleeve 18, the first fixed sleeve 17 is slidably connected to the pull rod 4 in a sleeve manner, the second fixed sleeve 18 is fixedly connected to the pull rod 4 in a sleeve manner, an elastic member is provided between the first fixed sleeve 17 and the second fixed sleeve 18, and the second fixed sleeve 18 is provided with a protrusion; the pliers head control assembly also includes a pliers head reset device 19, the pliers head reset device 19 is sleeved on the second fixed sleeve 18, and one end of the pliers head reset device 19 abuts against the protrusion, and the other end of the pliers head reset device 19 abuts against the main body 1.

[0061] The protrusion divides the second fixing sleeve 18 into a first section close to the first fixing sleeve 17 and a second section away from the first fixing sleeve 17 . The pliers head resetting device 19 is sleeved on the second section of the second fixing sleeve 18 .

[0062] The clamp head control assembly also includes a clamping spring 20, one end of the clamping spring 20 is sleeved on the first fixed sleeve 17, and the other end of the clamping spring 20 is sleeved on the first section. One end of the clamping spring 20 abuts against one of the two flanges close to the second fixed sleeve 18, and the other end of the clamping spring 20 abuts against the protrusion.

[0063] The spring rate of the forceps head reset device 19 is set to be smaller than the spring rate of the clamping spring 20. Therefore, when operating the wrench 5, only a small force is required to compress the forceps head reset device 19 at the beginning, so that the two forceps heads can be quickly closed to contact the tissue. After the two forceps heads are closed, the force needs to be increased to compress the forceps head reset device 19 and the clamping spring 20 at the same time to provide a greater clamping force, thereby clamping the tissue and preventing tissue displacement and detachment during the operation, further improving the safety and reliability of the operation.

[0064] A second limiting portion 21 is provided on the pull rod 4 . The width of the second limiting portion 21 is greater than the inner diameter of the first fixing sleeve 17 . The second limiting portion 21 is used to limit the movement stroke of the clamp head control assembly.

[0065] As an example, the front end of the pull rod 4 is also provided with a first connecting hole 22 and a second connecting hole 23, and the pliers head is provided with a third connecting hole 24 and a fourth connecting hole 25. The first connecting hole 22 and the fourth connecting hole 25 are oblong holes, and the second connecting hole 23 and the third connecting hole 24 are round holes. The two pliers heads are connected to the outer rod 2 through a first connecting pin 26, and the third connecting hole 24 and the first connecting hole 22 can be movably matched through the first connecting pin 26, and the fourth connecting hole 25 and the second connecting hole 23 can be movably matched through the second connecting pin 27.

[0066] In this embodiment, when a downward external force is applied to the wrench 5, the first transmission rod 6 rotates within the clamping portion 6-2, thereby driving the pull rod 4 forward. The second connecting pin 27 moves forward within the fourth connecting hole 25 and the second connecting hole 23, and the first connecting pin 26 moves forward within the third connecting hole 24 and the first connecting hole 22. The clamp head reset device 19 is compressed, thereby closing the two clamp heads. At this time, continuing to apply external force to the wrench 5 will compress the clamping spring 20, thereby applying additional clamping force to the two clamp heads to coagulate and cut tissue. The transmission coordination between the third connecting portion 5-2 and the first transmission rod 6 can reduce the movement range of the wrench 5 during the process of controlling the clamp heads, making the structure more compact and the control performance more stable, thereby ensuring the safety and effectiveness of the high-frequency electrosurgical surgical instrument. At the same time, the provision of the clamping spring 20 also enables the high-frequency electrosurgical instrument to clamp thicker tissue, thereby cutting and coagulating blood, thereby ensuring the effectiveness of the high-frequency electrosurgical surgical instrument.

[0067] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the embodiments. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A high-frequency electrosurgical instrument, characterized in that: include, main body; an outer rod, one end of which is connected to the main body and the other end of which is disposed away from the main body; an end effector, the end effector being arranged at an end of the outer rod away from the main body, the end effector comprising two clamp heads; A clamp head control assembly, the clamp head control assembly is used to control the opening and closing of the two clamp heads to clamp tissue; the clamp head control assembly includes a pull rod, a wrench, and a transmission mechanism, the pull rod is at least partially disposed in the outer rod, and the front end of the pull rod is transmission-connected to the clamp heads, and the wrench is transmission-connected to the pull rod via the transmission mechanism; A blade control assembly, the blade control assembly including a trigger, a push rod and a blade push rod; At least a portion of the knife pusher rod is disposed inside the main body, and at least a portion of the knife pusher rod is disposed inside the outer rod; one end of the knife pusher rod close to the main body is connected to the pusher rod, and one end of the knife pusher rod away from the main body is provided with a cutting blade, and the cutting blade is configured to cut the tissue; The push rod is arranged inside the main body, and is provided with at least a first connecting portion parallel to the push rod, the axis of the first connecting portion is staggered with the axis of the push rod, and the trigger is transmission-connected to the first connecting portion through a connecting rod assembly to drive the cutting blade to move along the axis of the push rod; the connecting rod assembly includes at least two connecting rods hinged to each other; The push rod is configured to be L-shaped and includes a first connecting portion and a second connecting portion perpendicular to the push rod and connected to the first connecting portion; the second connecting portion is detachably connected to the push rod via a mounting pin; The blade control assembly further includes a blade resetting device, which is sleeved on the blade pushing rod, and an end of the blade resetting device away from the cutting blade is engaged with the second connecting portion; The connecting rod group includes a first connecting rod and a second connecting rod, one end of the second connecting rod is hinged to the first connecting rod, and the other end of the second connecting rod is hinged to the first connecting portion of the push rod; one end of the first connecting rod is provided with a U-shaped groove, and the first connecting portion can be accommodated in the U-shaped groove; the second connecting rod is hinged to the U-shaped groove through a first fixing pin, and the first connecting rod is rotatably connected to the main body through a second fixing pin; the end of the second connecting rod away from the first connecting rod is rotatably connected to the first connecting portion of the push rod through a third fixing pin, and the second connecting rod is used to drive the push rod to translate.

2. The high-frequency electrosurgical instrument according to claim 1, characterized in that: A sliding groove parallel to the knife-pushing rod is provided inside the main body, and at least one pin is provided on the first connecting portion, and the first connecting portion is slidably connected to the inside of the main body through the cooperation between the pin and the sliding groove.

3. The high-frequency electrosurgical instrument according to claim 1, characterized in that: The trigger is slidably disposed on the main body and can move one end of the first connecting rod away from the U-shaped groove during sliding, thereby driving the first connecting rod to rotate around the second fixing pin; The trigger is provided with a first limiting portion and a driving portion, and the main body is provided with a limiting groove arranged parallel to the knife-pushing rod. The trigger is slidably arranged on the main body through the cooperation of the first limiting portion and the limiting groove; the driving portion contacts the first connecting rod to move the first connecting rod away from one end of the U-shaped groove.

4. The high-frequency electrosurgical instrument according to claim 1, characterized in that: The cutting blade is configured as a structure with a hollow center, and the cutting blade is a flexible structure.

5. The high-frequency electrosurgical instrument according to claim 1, characterized in that: The wrench includes a control portion and a third connecting portion, wherein the control portion is at least partially located outside the main body, the third connecting portion includes a first fixing bolt and an arc-shaped rotation groove, the wrench is rotatably connected to the main body via the first fixing bolt of the third connecting portion, and the wrench is transmission-connected to the pull rod via the cooperation of the rotation groove and the transmission mechanism; The transmission mechanism includes a first transmission rod, the first transmission rod includes a fourth connecting part and a clamping part, the fourth connecting part is provided with a second fixing bolt and a rotating pin; the first transmission rod is rotatably connected to the main body through the second fixing bolt; the rotating pin is in transmission cooperation with the rotating groove, and the clamping part is in rotation cooperation with the pull rod.

6. The high-frequency electrosurgical instrument according to claim 5, characterized in that: The clamp head control assembly further includes a first fixing sleeve, which is arranged on the pull rod. The outer ring of the first fixing sleeve is provided with two sections of flanges, and the clamping portion is clamped between the two sections of the flanges. The clamp head control assembly further includes a second fixing sleeve, wherein the first fixing sleeve is slidably connected to the pull rod in a sleeve-like manner, and the second fixing sleeve is fixedly connected to the pull rod in a sleeve-like manner, and an elastic member is provided between the first fixing sleeve and the second fixing sleeve; The second fixing sleeve is provided with a protrusion, and the clamp head control assembly further includes a clamp head reset device, which is sleeved on the second fixing sleeve and has one end abutting against the protrusion, and the other end abutting against the main body; The protrusion divides the second fixing sleeve into a first section close to the first fixing sleeve and a second section away from the first fixing sleeve, and the pliers head resetting device is sleeved on the second section of the second fixing sleeve; the pliers head control assembly also includes a clamping spring, one end of the clamping spring is sleeved on the first fixing sleeve, and the other end of the clamping spring is sleeved on the first section; one end of the clamping spring abuts against one of the two flanges close to the second fixing sleeve, and the other end of the clamping spring abuts against the protrusion.

7. The high-frequency electrosurgical instrument according to claim 6, characterized in that: The spring coefficient of the clamp head resetting device is smaller than the spring coefficient of the clamping spring.

8. The high-frequency electrosurgical instrument according to claim 6, characterized in that: The pull rod is provided with a second limiting portion, and the width of the second limiting portion is greater than the inner diameter of the first fixing sleeve.

9. The high-frequency electrosurgical instrument according to claim 5, characterized in that: The edges on both sides of the clamping portion are configured as smooth arc surfaces.

10. The high-frequency electrosurgery instrument according to claim 1, characterized in that: The front end of the pull rod is provided with a first connecting hole and a second connecting hole, and the pliers head is provided with a third connecting hole and a fourth connecting hole, the first connecting hole and the fourth connecting hole are oblong holes, and the second connecting hole and the third connecting hole are round holes; the two pliers heads are connected to the outer rod through a first connecting pin, the third connecting hole and the first connecting hole can be movably matched through the first connecting pin, and the fourth connecting hole and the second connecting hole can be movably matched through the second connecting pin.

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