A bipolar coagulation forceps with cutting function for endoscopic surgery

Abstract

The present application relates to the technical field of medical equipment, in particular to a cuttable bipolar electrocoagulation forceps for endoscopic surgery, which comprises a handle and a forceps head, a fixed tube is arranged on the handle, one end of the fixed tube is rotatably arranged in the handle, and the other end of the fixed tube is connected to the forceps head through the handle, the forceps head comprises a first forceps head and a second forceps head, and a forceps head opening and closing mechanism and a blade pushing mechanism are arranged on the fixed tube. The opening and closing of the first forceps head and the second forceps head are controlled by the forceps head opening and closing mechanism, the tissue is clamped and electrocoagulated, the blade assembly is controlled to be extended and retracted by the blade pushing mechanism, and the electrocoagulated tissue is cut; the present application is simple to operate, has good electrocoagulation effect, is high in tissue cutting efficiency, and improves the operation efficiency in endoscopic surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a cuttable bipolar electrocoagulation forceps for laparoscopic surgery. Background Technology

[0002] In laparoscopic surgery, energy instruments are used to separate, grasp, and coagulate severed blood vessels. Currently, ultrasonic scalpels and high-frequency bipolar electrocoagulation forceps are commonly used. Bipolar electrocoagulation delivers high-frequency electrical energy to the body tissue through the two tips of the bipolar forceps, dehydrating and coagulating the blood vessel between the two ends of the forceps to achieve hemostasis. Its effect is limited to the two ends of the forceps, minimizing the risk of collateral damage caused by diffused energy. High-frequency bipolar electrocoagulation forceps can provide a more stable electrocoagulation hemostasis effect in laparoscopic surgery, ensuring absolute safety for surrounding nerve tissues and avoiding the use of vascular clips, thus reducing the patient's financial burden. Chinese utility model patent CN216724720U discloses a multi-degree-of-freedom motion-sensing bipolar electrocoagulation forceps for laparoscopy. This patent solves the problem of poor flexibility in the forceps head of bipolar electrocoagulation forceps, allowing the forceps head to provide electrocoagulation hemostasis in laparoscopic surgery, improving the freedom and flexibility of the forceps head, and facilitating the operator's surgical movements. However, while the patent describes electrocoagulation hemostasis of tissue during laparoscopic surgery, the bipolar electrocoagulation forceps cannot electrocute and separate the tissue. Furthermore, existing bipolar electrocoagulation forceps are complex in structure, expensive, and inefficient and cumbersome to operate when cutting tissue. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a bipolar electrocoagulation forceps for laparoscopic surgery. This bipolar electrocoagulation forceps achieves the purpose of clamping and electrocoagulating tissue before cutting the electrocoagulated tissue, covering a wide range of tissue and improving the operational efficiency in laparoscopic surgery.

[0004] To achieve the above objectives, the technical solution of the present invention is: a cuttable bipolar electrocoagulation forceps for laparoscopic surgery, comprising a handle, a fixing tube provided on the handle, one end of the fixing tube being rotatably disposed inside the handle and the other end passing through the handle and connected to a forceps head; the fixing tube is provided with a forceps head opening and closing mechanism and a blade pushing mechanism, wherein the forceps head is used to clamp tissue and electrocoagulate the tissue.

[0005] The clamp opening and closing mechanism includes a push rod and a second handle. The push rod is sleeved inside the fixed tube, with one end passing through the fixed tube and connected to the clamp head, and the other end extending out of the fixed tube and located inside the first handle. The second handle is sleeved on the fixed tube. The clamp opening and closing mechanism is used to control the opening and closing of the clamp head and to clamp and electrocoagulate the tissue.

[0006] The blade pushing mechanism includes a blade pusher and a handle. The blade pusher is sleeved inside the fixed tube. One end of the blade pusher is connected to a blade assembly, and the other end is connected to a sliding sleeve. The sliding sleeve is slidably connected to the fixed tube. The handle is connected to the sliding sleeve. The blade pushing mechanism is used to control the extension and retraction of the blade assembly and to control the blade to cut the electrocoagulated tissue.

[0007] Furthermore, the clamps include a first clamp and a second clamp. The end of the second clamp is engaged within and hinged to the first clamp. Both the first and second clamps include a metal shell and a conductive layer. A ceramic insulating layer is disposed within the metal shell. The conductive layer is fixedly disposed on the upper surface of the ceramic insulating layer. A sliding groove is formed in the middle of the upper surface of the conductive layer. Multiple striped grooves are also provided on the upper surface of the conductive layer, located on both sides of the sliding groove. The purpose of the striped grooves is to increase the clamping force between the first and second clamps and prevent the first and second clamps from slipping when clamping tissue, thus affecting the electrocoagulation effect.

[0008] The first clamp head has symmetrically provided first limiting holes on both sides of its metal shell, and an insulating pad is also provided inside the metal shell of the first clamp head. The insulating pad has a connecting groove corresponding to the sliding groove, and multiple spherical protrusions are also provided on the upper surface of the conductive layer of the first clamp head. The second clamp head has symmetrically provided second limiting holes on both sides of its metal shell. Under the action of the ceramic insulating layer and the insulating pad, the current is isolated between the metal shell and the conductive layer to prevent short circuits and prevent the clamp head from electrocoagulating the tissue.

[0009] Furthermore, the first handle is provided with a T-shaped block, one end of which is fixedly provided with a fixing plate, and the upper surface of the T-shaped block is provided with a groove and an arc groove; the first handle is also provided with a spring plate, one side of which is fixedly provided with a spring, which serves to limit the movement of the second handle.

[0010] Furthermore, the clamp opening and closing mechanism also includes a first baffle, a second baffle, a bushing, a shaped spring, and a spring. The first baffle, the second baffle, and the bushing are all sleeved on the fixed tube and fixedly connected to the fixed tube. The cross-section of the bushing is an inverted "T" shape. The shaped spring is engaged on the fixed tube and is located between the first baffle and the fixed plate. The spring is sleeved on the fixed tube and is located between the first baffle and the bushing. The opening and closing of the first and second clamps are achieved through the shaped spring and the spring.

[0011] Furthermore, one end of the push rod extends out of the fixing tube and is fixedly fitted with a limiting plate, which is located within the groove and is rotatably connected to the T-shaped block; the other end of the push rod extends out of the fixing tube and is fixedly connected to a limiting crossbar, both ends of which are located within the first limiting hole and the second limiting hole; the second handle is rotatably connected to the first handle, and the second handle is sleeved on the bushing and located between the bushing and the second baffle. One side of the second handle is also provided with a stop plate corresponding to the spring piece, and the other side is fixedly fitted with a top plate. Under the action of the first limiting hole and the second limiting hole, the push rod and the limiting crossbar push the second clamp head to open and close.

[0012] Furthermore, the blade pushing mechanism also includes a knob and a compression spring. The knob is sleeved on the fixed tube and slidably connected to the fixed tube. The compression spring is sleeved on the fixed tube and located between the sliding sleeve and the knob. The knob includes a connector, and a slider is fixedly installed inside the connector. A guide groove matching the slider is opened on the fixed tube. The knob is slidably connected to the fixed tube through the cooperation of the slider and the guide groove, which facilitates the extension and retraction of the fixed tube.

[0013] Furthermore, the blade assembly includes a blade and a metal sheet, the blade and the metal sheet are fixedly connected, and both the blade and the metal sheet are located in the connecting groove; one end of the blade pusher is fixedly connected to the metal sheet, and the other end is connected to an L-shaped slide member; a limiting groove is also provided on the fixed tube; one end of the L-shaped slide member extends out of the limiting groove and connects to the sliding sleeve; the sliding sleeve achieves the purpose of pushing the blade assembly to cut tissue through the blade pusher.

[0014] Furthermore, the handle three is hinged to the sliding sleeve, and one end of the sliding sleeve is provided with a hinge post that is slidably connected to the sliding sleeve. Both sides of one end of the handle three are provided with hinge holes, and both ends of the hinge post are located in the hinge holes. The handle three is provided with a slot on the side opposite to the handle two. Rotating the handle three allows the sliding sleeve to slide on the fixed tube, thereby causing the handle three to push the blade assembly to cut the tissue.

[0015] Furthermore, both the first and second pliers are electrically connected to an electrical connector, which is used to connect to the high-frequency electrosurgical unit.

[0016] Furthermore, the fixed tube is also provided with two electrode wires, one of which is electrically connected to the first clamp head and the other is electrically connected to the second clamp head. One end of each of the electrode wires is connected to a circuit switch, which is electrically connected to an electrical connector. The circuit switch can be installed at the grip of the handle to facilitate the operator to control the current flow and disconnection.

[0017] The beneficial effects of the present invention through the above technical solution are as follows: This invention controls the opening and closing of the first and second clamps through a clamp opening and closing mechanism to clamp and electrocoagulate tissue, and controls the extension and retraction of the blade assembly through a blade pushing mechanism to cut the electrocoagulated tissue; it is simple to operate, has good electrocoagulation effect, and high tissue cutting efficiency, thus improving the operational efficiency in laparoscopic surgery.

[0018] This invention uses two electrode wires to connect the conductive layers of the first and second clamps to two electrodes respectively. By rotating the second handle clockwise, the second handle causes the fixing tube to retract inwards towards the first handle, causing the limiting crossbar at the end of the push rod to press down on the second clamp, thus achieving the purpose of closing the first and second clamps to clamp the tissue. This forms a closed circuit between the conductive layers of the first and second clamps, allowing for electrocoagulation of the tissue between the two conductive layers. The tissue in contact with the two conductive layers forms the electrocoagulated tissue that needs to be cut, resulting in a large area of ​​electrocoagulated tissue and a good electrocoagulation effect.

[0019] This invention enables the blade to cut electrocoagulated tissue by rotating the handle three clockwise. The handle three drives the sliding sleeve to slide on the fixed tube, and the sliding sleeve drives the blade pusher to push the blade assembly to slide in the connecting groove and the sliding groove. This achieves the purpose of the blade cutting electrocoagulated tissue. It is simple to operate and has high cutting efficiency.

[0020] The knob of this invention cooperates with the guide groove on the fixing tube through the slider in the connector. This not only ensures that the fixing tube can extend and retract within the knob and connector, but also limits the fixing tube through the slider. Rotating the knob can drive the fixing tube to rotate, and the fixing tube can drive the forceps head to rotate, so that the forceps head is at an angle that is conducive to surgery. This improves the freedom and flexibility of the forceps head and makes it easier for the operator to use this invention to electrocoagulate tissue. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to the present invention; Figure 2 This is a schematic diagram of the pliers head of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing tube of the present invention; Figure 4 This is a partial structural schematic diagram of the fixing tube of the present invention; Figure 5 This is a partial cross-sectional view of the fixing tube of the present invention; Figure 6 This is a schematic diagram of the irregularly shaped spring sheet of the present invention; Figure 7 This is a schematic diagram of the knob structure of the present invention; Figure 8 yes Figure 1 Enlarged view of point A in the middle; Figure 9 yes Figure 1 Enlarged view of point B in the middle; Figure 10 yes Figure 4 Enlarged view of point C in the middle.

[0022] In the attached diagram, the numbers are as follows: 1 is handle one, 101 is spring mounting plate, 102 is spring, 2 is handle two, 201 is abutment plate, 202 is top plate, 3 is handle three, 301 is hinge hole, 4 is fixing tube, 401 is limiting groove, 402 is guide groove, 5 is pliers head, 501 is first pliers head, 5011 is metal shell, 5012 is ceramic insulating layer, 5013 is conductive layer, 5014 is first limiting hole, 502 is second pliers head, 5021 is second limiting hole, 6 is T-block, 601 is fixing plate, 602 is groove. 603 is an arc-shaped groove, 7 is a push rod, 701 is a limiting plate, 702 is a limiting crossbar, 8 is a first baffle, 9 is a bushing, 10 is a spring, 11 is a second baffle, 12 is a sliding sleeve, 1201 is a hinge post, 13 is a compression spring, 14 is a knob, 1401 is a connector, 1402 is a slider, 15 is a shaped spring, 16 is a blade pusher, 1601 is an L-shaped slider, 17 is an insulating pad, 18 is a metal sheet, 1801 is a blade, 19 is a sliding groove, 20 is a striped groove, 21 is a spherical protrusion, and 22 is an electrode wire. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: In the description of this invention, it should be understood that the terms "left," "right," "up," "down," "horizontal," and "vertical," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0024] like Figures 1-10 As shown, this embodiment provides a cuttable bipolar electrocoagulation forceps for laparoscopic surgery, including a handle 1. A fixing tube 4 is provided on the handle 1. The handle 1 is a shell-shaped component, and the fixing tube 4 is a hollow structure. One end of the fixing tube 4 is rotatably disposed inside the handle 1, and the other end passes through the handle 1 and is connected to a forceps head 5. The forceps head 5 is used to clamp tissue and electrocoagulate the tissue. The fixing tube 4 is provided with a forceps head opening and closing mechanism and a blade pushing mechanism.

[0025] The clamp opening and closing mechanism includes a push rod 7 and a handle 2. The push rod 7 is sleeved inside the fixed tube 4 and is used to close the clamp head 5. One end of the push rod 7 passes through the fixed tube 4 and is connected to the clamp head 5, while the other end extends out of the fixed tube 4 and is located inside the handle 1. One end of the handle 2 extends into the handle 1 and is sleeved on the fixed tube 4, while the other end is located outside the handle 1.

[0026] The blade pushing mechanism includes a blade pusher 16 and a handle 3. The blade pusher 16 is sleeved inside the fixed tube 4. One end of the blade pusher 16 is connected to a blade assembly, and the other end is connected to a sliding sleeve 12. The sliding sleeve 12 is slidably connected to the fixed tube 4. The handle 3 is connected to the sliding sleeve 12, and the sliding sleeve 12 drives the blade assembly to cut electrocoagulated tissue through the blade pusher 16. One end of the handle 3 extends into the handle 1 and is connected to the sliding sleeve 12, while the other end is located outside the handle 1. The handle 2 and handle 3 are arranged sequentially. The handle 1 has a groove for the movement of the handle 2 and handle 3.

[0027] The pliers 5 includes a first pliers 501 and a second pliers 502. Both the first pliers 501 and the second pliers 502 have a U-shaped cross-section, and the width of the end of the second pliers 502 is smaller than the width of the end of the first pliers 501. The end of the second pliers 502 is fitted inside and hinged to the first pliers 501. Both the first pliers 501 and the second pliers 502 include a metal shell 5011 and a conductive layer 5013. A ceramic insulating layer 501 is disposed inside the metal shell 5011. 2. The ceramic insulating layer 5012 extends outward and wraps around the outside of the metal shell 5011. The conductive layer 5013 is fixedly disposed on the upper surface of the ceramic insulating layer 5012. A sliding groove 19 is provided in the middle of the upper surface of the conductive layer 5013. The sliding groove 19 is used for the blade assembly to slide to cut electrocoagulated tissue. A plurality of striped grooves 20 are also provided on the upper surface of the conductive layer 5013. The striped grooves 20 are located on both sides of the sliding groove 19. The striped grooves 20 can increase the clamping force between the first clamping head 501 and the second clamping head 502.

[0028] The first clamp head 501 has symmetrically provided first limiting holes 5014 on both sides of its metal shell 5011 end. An insulating pad 17 is also provided inside the metal shell 5011 end of the first clamp head 501. One end of the insulating pad 17 is connected to the ceramic insulating layer 5012 and the conductive layer 5013 of the first clamp head 501. The upper surface of the end of the insulating pad 17 in contact with the conductive layer 5013 is at the same horizontal line as the upper surface of the conductive layer 5013. The insulating pad 17 is also made of ceramic material, and a connection corresponding to the sliding groove 19 is provided on the insulating pad 17. The first clamp head 501 has multiple spherical protrusions 21 on its upper surface of the conductive layer 5013. These protrusions 21 are made of conductive material and are fixedly connected to the conductive layer 5013. The concentration of charge on the spherical surface is greater than that on the plane, and the effect of electrocoagulating blood vessels and tissues is proportional to the current intensity, thus improving the electrocoagulation effect. The second clamp head 502 has symmetrically provided second limiting holes 5021 on both sides of the metal shell 5011 end. The second limiting holes 5021 are inclined to facilitate the limiting crossbar 702 to control the closing of the second clamp head 502. Under the action of the ceramic insulating layer 5012 and the insulating pad 17, the metal shell 5011 and the conductive layer 5013 are current-isolated to prevent short circuits, thus preventing the clamp head 5 from electrocoagulating the tissue.

[0029] The handle 1 is provided with a T-shaped block 6. A fixing plate 601 is fixedly installed at one end of the T-shaped block 6. The upper surface of the T-shaped block 6 is provided with a groove 602 and an arc groove 603. The end of the fixing tube 4 and the end of the push rod 7 extending out of the fixing tube 4 are both located in the arc groove 603. The fixing tube 4 is fixedly connected to the T-shaped block 6 and the fixing plate 601. The handle 1 is also provided with a spring plate 101. A spring plate 102 is fixedly installed on one side of the spring plate 101. The spring plate 102 plays a limiting role for the abutment plate 201.

[0030] The clamp opening and closing mechanism further includes a first baffle 8, a second baffle 11, a bushing 9, a shaped spring piece 15, and a spring 10. The first baffle 8, the second baffle 11, and the bushing 9 are all sleeved on the fixed tube 4 and fixedly connected to the fixed tube 4. The cross-section of the bushing 9 is a "T" shaped structure. The shaped spring piece 15 is clamped on the fixed tube 4. The shaped spring piece 15 has a slot that matches the fixed tube 4. The shaped spring piece 15 is clamped on the fixed tube 4 through the slot. The shaped spring piece 15 is rotatably connected to the fixed tube 4. The shaped spring piece 15 is composed of two arc-shaped pieces made of copper. That is, both arc-shaped pieces have slots, and there is a certain distance between the two arc-shaped pieces to ensure that the shaped spring piece 15 has elastic deformation. The shaped spring piece 15 is located between the first baffle 8 and the fixed plate 601. The spring 10 is sleeved on the fixed tube 4 and is located between the first baffle 8 and the bushing 9. Rotating handle 2 clockwise causes it to rotate relative to handle 1. This can be understood as pressing handle 2 downwards, causing the fixing tube 4 to retract into handle 1. The first baffle 8 compresses the irregularly shaped spring 15. The push rod 7 and the limiting crossbar 702 remain fixed. The fixing tube 4 moves, and the limiting crossbar 702 presses down on the second clamp head 502, achieving the purpose of closing the first clamp head 501 and the second clamp head 502 to clamp and electrocoagulate the tissue. Loosening handle 2 causes handle 2 and the fixing tube 4 to reset under the action of the irregularly shaped spring 15, simultaneously causing the first clamp head 501 to reset, so that the first clamp head 501 and the second clamp head 502 are in an open state.

[0031] One end of the push rod 7 extends out of the fixing tube 4 and is fixedly fitted with a limiting plate 701. The limiting plate 701 is located in the groove 602 and is rotatably connected to the T-shaped block 6. The limiting plate 701 limits the push rod 7, ensuring that the limiting crossbar 702 can open and close the pliers 5 when the fixing tube 4 moves. The other end of the push rod 7 extends out of the fixing tube 4 and is fixedly connected to the limiting crossbar 702. The limiting crossbar 702 is set perpendicular to the push rod 7. The two ends of the limiting crossbar 702 are... Both are located within the first limiting hole 5014 and the second limiting hole 5021. The limiting crossbar 702 can slide within the first limiting hole 5014 and the second limiting hole 5021. The second handle 2 can rotate relative to the first handle 1. The second handle 2 is sleeved on the bushing 9 and located between the bushing 9 and the second baffle 11. The second handle 2 is rotatably connected to the bushing 9. One side of the second handle 2 is also provided with a stop plate 201 corresponding to the spring piece 102, and the other side is fixedly provided with a top plate 202.

[0032] The blade pushing mechanism also includes a knob 14 and a compression spring 13. The knob 14 is sleeved on the fixed tube 4 and slidably connected to the fixed tube 4. The diameter of the knob 14 is larger than the thickness of the handle 1. A strip-shaped hole is opened on the handle 1 for the knob 14 to extend out. The outermost end of the knob 14 extends out of the handle 1 for a person to rotate the knob 14. The knob 14 can rotate relative to the handle 1. The compression spring 13 is sleeved on the fixed tube 4 and located between the sliding sleeve 12 and the knob 14. 2. The end near the knob 14 has a frustum structure. One end of the compression spring 13 is fitted onto the end of the sliding sleeve 12, wherein the diameter of one end of the compression spring 13 is larger than the diameter of the other end of the compression spring 13. The knob 14 includes a connector 1401, and a slider 1402 is fixedly installed inside the connector 1401. A guide groove 402 matching the slider 1402 is opened on the fixed tube 4. The knob 14 is slidably connected to the fixed tube 4 through the cooperation of the slider 1402 and the guide groove 402. This not only ensures that the fixed tube 4 can achieve the purpose of extension and retraction within the knob 14 and the connector 1401, but also limits the fixed tube 4 through the slider 1402, so that rotating the knob 14 can drive the fixed tube 4 to rotate, thereby improving the freedom and flexibility of the pliers head 5.

[0033] The blade assembly includes a blade 1801 and a metal sheet 18. The blade 1801 and the metal sheet 18 are fixedly connected, and both the blade 1801 and the metal sheet 18 are located in a connecting groove. One end of the blade pusher 16 is fixedly connected to the metal sheet 18, and the other end is connected to an L-shaped slider 1601. A limiting groove 401 is also provided on the fixing tube 4. One end of the L-shaped slider 1601 extends out of the limiting groove 401 and connects to the sliding sleeve 12. The L-shaped slider 1601 is slidably connected to the fixing tube 4. At the same time, an annular groove matching the end of the L-shaped slider 1601 is provided inside the sliding sleeve 12. The end of the L-shaped slider 1601 is locked in the annular groove and can rotate in the annular groove. The movement of the sliding sleeve 12 drives the L-shaped slider 1601 and the blade pusher 16 to move. Rotate handle 3 clockwise. Handle 3 causes sliding sleeve 12 to slide on fixed tube 4. Sliding sleeve 12 causes blade pusher 16 to push the blade assembly to slide in connecting groove and sliding groove 19, thereby causing blade 1801 to cut electrocoagulated tissue.

[0034] The handle 3 is hinged to the sliding sleeve 12. One end of the sliding sleeve 12 is provided with a hinge post 1201 that is slidably connected to the sliding sleeve 12. Both sides of one end of the handle 3 are provided with hinge holes 301. Both ends of the hinge post 1201 are located in the hinge holes 301. The handle 3 is hinged to the sliding sleeve 12 through the cooperation of the hinge post 1201 and the hinge holes 301. A slot is provided on the side of the handle 3 opposite to the handle 2. The top plate 202 is located in the slot. When the handle 3 is rotated, the top plate 202 pushes into the slot to limit the handle 3, ensuring that the handle 3 can drive the sliding sleeve 12 to slide on the fixed tube 4.

[0035] Both the first pliers 501 and the second pliers 502 are electrically connected to an electrical connector, which is used to connect to the high-frequency electrosurgical unit. The pliers 5 are connected to the high-frequency electrosurgical unit through the electrical connector. After the high-frequency electrosurgical unit is turned on, the first pliers 501 and the second pliers 502 are respectively equipped with a single-pole current, and the first pliers 501 and the second pliers 502 form corresponding two poles.

[0036] The fixed tube 4 is also provided with two electrode wires 22. One electrode wire 22 is electrically connected to the first clamp head 501, and the other electrode wire 22 is electrically connected to the second clamp head 502. One end of each electrode wire 22 is connected to a circuit switch, which is electrically connected to an electrical connector. The two electrode wires 22 are respectively connected to two conductive layers 5013 through wire connectors. Under the action of the ceramic insulating layer 5012 and the insulating pad 17, the conductive layers 5013 on the first clamp head 501 and the second clamp head 502 are charged to form positive and negative poles, respectively. The current loop is formed by closing the clamp head 5, thereby achieving the purpose of electrocoagulation of the tissue between the first clamp head 501 and the second clamp head 502.

[0037] In use, first connect the electrical connector to the high-frequency electrosurgical unit, and rotate the handle 2 clockwise. The handle 2 causes the fixing tube 4 to retract into the handle 1. The end of the fixing tube 4 slides in the arc groove 603. The first baffle 8 compresses the irregularly shaped spring 15. During the process of the fixing tube 4 retracting into the handle 1, the limiting crossbar 702 presses down on the second clamp 502. When the abutment 201 contacts the spring 102, the first clamp 501 and the second clamp 502 are in a closed state, clamping the tissue that needs to be electrocoagulated. Pressing the circuit switch on handle 1 energizes the first clamp head 501 and the second clamp head 502. Under the action of the electrode wire 22 and the wire connector, the conductive layer 5013 on the first clamp head 501 and the second clamp head 502 are respectively energized to form positive and negative poles. By closing the first clamp head 501 and the second clamp head 502, the conductive layer 5013 of the first clamp head 501 and the conductive layer 5013 of the second clamp head 502, as well as the tissue between the first clamp head 501 and the second clamp head 502, form a closed circuit, energizing the tissue between the first clamp head 501 and the second clamp head 502, thereby achieving the effect of electrocoagulation of the tissue.

[0038] After electrocoagulation of the tissue is completed, release the pressed circuit switch and turn the handle 3 clockwise. After the top plate 202 is pushed into the slot, continue to turn the handle 3, thereby pushing the sliding sleeve 12 to slide on the fixed tube 4 towards the clamp head 5. The compression spring 13 is compressed, and the sliding sleeve 12 pushes the blade pusher 16 towards the clamp head 5 through the L-shaped slide member 1601. The blade pusher 16 pushes the metal plate 18 and the blade 1801 forward in the connecting groove. When the blade 1801 moves into the slide groove 19, it pushes the blade 1801 to continue to move forward, so that the blade 1801 cuts off the electrocoagulated tissue. Release handle 3, and the sliding sleeve 12 returns to its original position under the action of the compression spring 13. The sliding sleeve 12 then causes the blade pusher 16 to drive the metal sheet 18 and the blade 1801 to return to their original positions again through the L-shaped slider 1601. Release handle 2, and the irregularly shaped spring 15 returns to its initial state, causing the fixing tube 4 to extend outward from handle 1. The limiting crossbar 702 slides to the left relative to the fixing tube 4 within the first limiting hole 5014 and the second limiting hole 5021, causing the first pliers 501 to return to its original position, so that the first pliers 501 and the second pliers 502 are in an open state.

[0039] Before electrocoagulation surgery, the operator can rotate knob 14 to adjust the angle of the forceps head 5, positioning it at an angle favorable for the operation. Specifically, rotating knob 14 causes the fixing tube 4 to rotate under the action of slider 1402 within connector 1401, thereby rotating the forceps head 5 to adjust its angle. The fixing tube 4 rotates within sliding sleeve 12 and its end rotates within arc-shaped groove 603. The fixing tube 4 also drives push rod 7 and blade pusher 16 to rotate. Limiting plate 701 rotates within groove 602, and blade pusher 16 drives one end of L-shaped slider 1601 to rotate within annular groove. First baffle 8, bushing 9, and second baffle 11 rotate together with fixing tube 4 within handle 1. After adjusting the angle of the forceps head 5, laparoscopic electrocoagulation surgery can be performed.

[0040] The embodiments described above are merely preferred embodiments of the invention and are not intended to limit the scope of the invention. Therefore, any equivalent changes or modifications made to the technical solutions described in the claims of this invention should be included within the scope of the patent application of this invention.

Claims

1. A cuttable bipolar electrocoagulation forceps for laparoscopic surgery, comprising a handle (1), characterized in that, A fixing tube (4) is provided on the handle (1). One end of the fixing tube (4) is rotatably installed inside the handle (1), and the other end passes through the handle (1) and is connected to the pliers head (5). The fixing tube (4) is provided with a pliers head opening and closing mechanism and a blade pushing mechanism. The pliers opening and closing mechanism includes a push rod (7) and a second handle (2). The push rod (7) is sleeved inside the fixed tube (4). One end of the push rod (7) passes through the fixed tube (4) and is connected to the pliers (5). The other end extends out of the fixed tube (4) and is located inside the first handle (1). The second handle (2) is sleeved on the fixed tube (4). The blade pushing mechanism includes a blade pusher (16) and a handle (3). The blade pusher (16) is sleeved inside the fixed tube (4). One end of the blade pusher (16) is connected to a blade assembly, and the other end is connected to a sliding sleeve (12). The sliding sleeve (12) is slidably connected to the fixed tube (4). The handle (3) is connected to the sliding sleeve (12). The handle (1) is provided with a T-shaped block (6), and a fixing plate (601) is fixedly provided at one end of the T-shaped block (6). The upper surface of the T-shaped block (6) is provided with a groove (602) and an arc groove (603). The handle (1) is also provided with a spring plate (101), and a spring plate (102) is fixedly provided on one side of the spring plate (101). The clamp opening and closing mechanism further includes a first baffle (8), a second baffle (11), a bushing (9), a shaped spring (15), and a spring (10). The first baffle (8), the second baffle (11), and the bushing (9) are all sleeved on the fixed tube (4) and fixedly connected to the fixed tube (4). The cross-section of the bushing (9) is a "T" shaped structure. The shaped spring (15) is clamped on the fixed tube (4) and is located between the first baffle (8) and the fixed plate (601). The spring (10) is sleeved on the fixed tube (4) and is located between the first baffle (8) and the bushing (9).

2. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 1, characterized in that, The pliers (5) includes a first pliers (501) and a second pliers (502). The end of the second pliers (502) is engaged in the first pliers (501) and is hinged to the first pliers (501). Both the first pliers (501) and the second pliers (502) include a metal shell (5011) and a conductive layer (5013). A ceramic insulating layer (5012) is provided inside the metal shell (5011). The conductive layer (5013) is fixedly disposed on the upper surface of the ceramic insulating layer (5012). A sliding groove (19) is provided in the middle of the upper surface of the conductive layer (5013). A plurality of striped grooves (20) are also provided on the upper surface of the conductive layer (5013). The striped grooves (20) are located on both sides of the sliding groove (19). The first clamp head (501) has a metal shell (5011) with symmetrical first limiting holes (5014) on both sides. An insulating pad (17) is also provided inside the metal shell (5011) of the first clamp head (501). A connecting groove corresponding to the sliding groove (19) is provided on the insulating pad (17). A plurality of spherical protrusions (21) are also provided on the upper surface of the conductive layer (5013) of the first clamp head (501). The second clamp head (502) has a metal shell with symmetrical second limiting holes (5021) on both sides.

3. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 2, characterized in that, One end of the push rod (7) extends out of the fixing tube (4) and is fixedly provided with a limiting plate (701). The limiting plate (701) is located in the groove (602) and is rotatably connected to the T-shaped block (6). The other end of the push rod (7) extends out of the fixing tube (4) and is fixedly connected to a limiting crossbar (702). Both ends of the limiting crossbar (702) are located in the first limiting hole (5014) and the second limiting hole (5021). The second handle (2) is rotatably connected to the first handle (1). The second handle (2) is sleeved on the bushing (9) and located between the bushing (9) and the second baffle (11). One side of the second handle (2) is also provided with a stop plate (201) corresponding to the spring piece (102), and the other side is fixedly provided with a top plate (202).

4. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 1, characterized in that, The blade pushing mechanism also includes a knob (14) and a compression spring (13). The knob (14) is sleeved on the fixed tube (4) and slidably connected to the fixed tube (4). The compression spring (13) is sleeved on the fixed tube (4) and located between the sliding sleeve (12) and the knob (14). The knob (14) includes a connector (1401). A slider (1402) is fixedly installed inside the connector (1401). A guide groove (402) matching the slider (1402) is opened on the fixed tube (4). The knob (14) is slidably connected to the fixed tube (4) through the cooperation of the slider (1402) and the guide groove (402).

5. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 2, characterized in that, The blade assembly includes a blade (1801) and a metal plate (18). The blade (1801) and the metal plate (18) are fixedly connected, and both the blade (1801) and the metal plate (18) are located in the connecting groove. One end of the blade pusher (16) is fixedly connected to the metal plate (18), and the other end is connected to an L-shaped slide (1601). A limiting groove (401) is also provided on the fixing tube (4). One end of the L-shaped slide (1601) extends out of the limiting groove (401) and connects to the sliding sleeve (12).

6. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 5, characterized in that, The handle three (3) is hinged to the sliding sleeve (12). One end of the sliding sleeve (12) is provided with a hinge post (1201) that is slidably connected to the sliding sleeve (12). Both sides of one end of the handle three (3) are provided with hinge holes (301). Both ends of the hinge post (1201) are located in the hinge holes (301). The handle three (3) is provided with a slot on the side opposite to the handle two (2).

7. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 2, characterized in that, Both the first pliers (501) and the second pliers (502) are electrically connected to an electrical connector, which is used to connect to the high-frequency electrosurgical unit.

8. The cuttable bipolar electrocoagulation forceps for laparoscopic surgery according to claim 7, characterized in that, The fixed tube (4) is also provided with two electrode wires (22), one of which is electrically connected to the first clamp head (501) and the other is electrically connected to the second clamp head (502). One end of each of the two electrode wires (22) is connected to a circuit switch, and the circuit switch is electrically connected to an electrical connector.

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