Forceps drive structure and surgical instruments

Abstract

This application relates to a pliers head driving structure, including a pliers bar assembly, a blade driving assembly, and a pliers bar drive assembly. The pliers bar assembly is rotatably disposed on the handle portion about a first axis. The pliers bar assembly includes a jaw assembly for gripping tissue and a connecting rod assembly connected to the jaw assembly. The blade driving assembly is connected to a blade disposed within the connecting rod assembly and is adapted to drive the blade to reciprocate along the first axis. The pliers bar drive assembly is coupled to the connecting rod assembly and is capable of driving the connecting rod assembly to reciprocate along the first axis, thereby switching the jaw assembly between an open and closed state. The pliers bar drive assembly includes a contact assembly, which is independently electrically connected to each jaw in the jaw assembly. The pliers bar assembly of this pliers head driving structure can rotate 360° about the first axis, and each jaw in the jaw assembly can be independently powered, ensuring continuous power supply to the pliers bar assembly during rotation.

Description

Technical Field

[0001] This application relates to the field of surgical instrument technology, and in particular to a forceps head drive structure and a surgical instrument. Background Technology

[0002] Currently, electrosurgical closure and cutting instruments and their end effectors suitable for minimally invasive surgery are instruments that can enter the human body through tiny wounds to cut and coagulate blood vessels and tissues. They are also among the instruments widely used in minimally invasive surgery. They are mainly used for cutting, severing and coagulating tissues in open or endoscopic surgeries in abdominal surgery, gynecology, pediatrics and thoracic surgery.

[0003] Existing electrosurgical closure cutting instruments have complex structures, making it inconvenient for operators to control the opening and closing of the jaws independently. Furthermore, because these instruments are operated manually, the forward movement of the cutting blade cannot be accurately controlled, further compromising the jaw movement. Additionally, for double-opening instruments, the jaw drive structure of current single-opening instruments is unsuitable because each of the two jaws needs to be electrically connected to the two electrodes of the energy platform. Utility Model Content

[0004] Therefore, it is necessary to provide a pliers head drive structure to address the problem that the pliers head drive structure in current double-clamping instruments cannot maintain independent power supply to each pliers head when the pliers body rotates.

[0005] This application provides a clamp head driving structure, mounted on the handle portion, comprising:

[0006] A clamping bar assembly, the clamping bar assembly being rotatably disposed on the handle portion about a first axis, the clamping bar assembly including a jaw assembly for clamping tissue and a connecting rod assembly connected to the jaw assembly;

[0007] A blade drive assembly, connected to a blade disposed within the linkage assembly, and adapted to drive the blade to reciprocate along the first axis; and

[0008] A jaw drive assembly is provided, which is coupled to the linkage assembly and is capable of driving the linkage assembly to reciprocate along the first axis and causing the jaw assembly to switch between an open state and a closed state. The jaw drive assembly includes a contact assembly, which is independently electrically connected to each jaw head in the jaw assembly.

[0009] In one embodiment, the linkage assembly includes an outer tube and an inner rod nested from the outside in, the inner rod being slidable relative to the outer tube along a first axis, the inner rod having a receiving groove along its axial direction, the blade being received in the receiving groove and slidable relative to the inner rod along the first axis.

[0010] In one embodiment, the jaw assembly further includes a rotating member rotatably disposed on the handle portion, the rotating member being configured to be connected to one end of the outer tube near the handle portion, so as to drive the jaw assembly to rotate synchronously via the outer tube while driving the outer tube to rotate about the first axis.

[0011] In one embodiment, the jaw assembly includes a first jaw and a second jaw, the first jaw and the second jaw being hinged together at a hinge point located at the end of the outer tube away from the handle portion. Both the first jaw and the second jaw are provided with drive grooves, and drive pins are provided within these drive grooves. The drive pins are connected to an inner rod, such that when the inner rod moves the drive pin to a first position, the first jaw and the second jaw move closer together to clamp tissue; and when the inner rod moves the drive pin to a second position, the first jaw and the second jaw move further apart to release the clamped tissue.

[0012] In one embodiment, the clamp drive assembly includes a main wrench, a closing slider, and a connecting rod. The main wrench and the closing slider are respectively hinged to both ends of the connecting rod. The main wrench is movably coupled to the handle portion so that it can push the closing slider along the first axis via the connecting rod when rotated.

[0013] In one embodiment, the clamp lever drive assembly further includes a fixed block, a rotary contact block, a first main spring, a second main spring, and a spring retaining sleeve. The closing slider is connected to the spring retaining sleeve, and the spring retaining sleeve is adapted to rotate relative to the closing slider. The first main spring is disposed between the fixed block and the spring retaining sleeve. The inner rod passes through the spring retaining sleeve and the first main spring and is inserted into one end of the fixed block. The other end of the fixed block is connected to the rotary contact block.

[0014] In one embodiment, the contact assembly includes two sets of contact rings and contact plates, the contact rings being normally connected to the contact plates, and the two contact rings being respectively mounted on both sides of the rotating contact block and electrically connected to the first pliers and the second pliers respectively.

[0015] In one embodiment, the two contact rings are located between the fixed block and the rotating contact block, and when the fixed block and the rotating contact block are connected, the fixed block and the rotating contact block are adapted to fix the two contact rings installed on both sides of the rotating contact block.

[0016] In one embodiment, the blade drive assembly includes a blade wrench and a pusher slider, the blade wrench being rotatably disposed on the handle portion, the pusher slider being connected to the blade, the blade wrench being configured to be drively connected to the pusher slider and adapted to drive the pusher slider to move along the first axis when rotated.

[0017] In one embodiment, the blade wrench is motive-connected to the pusher slider via a transmission assembly, the transmission assembly including a transmission gear, the inner ring teeth of the transmission gear being motive-connected to the blade wrench, and the outer ring teeth of the transmission gear meshing with the pusher slider, so as to drive the transmission gear to rotate while rotating the blade wrench, and drive the pusher slider to move in a straight line via the transmission gear.

[0018] A second aspect of the present invention provides a surgical instrument in which a forceps drive structure as described above is employed.

[0019] The aforementioned clamp drive structure has a clamp bar assembly mounted on the handle and capable of rotating 360° around a first axis. The clamp bar drive assembly is connected to the linkage assembly to drive the linkage assembly to reciprocate along the first axis. As the linkage assembly reciprocates, it simultaneously drives the jaw assembly to switch between an open and closed state, enabling the jaw assembly to clamp or release tissue. Each clamp head in the jaw assembly is also electrically connected to a contact assembly, and each clamp head in the jaw assembly can be independently powered through the contact assembly. Each clamp head in the jaw assembly can achieve independent power supply, and the power supply to the clamp bar assembly remains continuous during rotation. Attached Figure Description

[0020] Figure 1 This is an assembly diagram of the internal structure of the clamp head drive structure in one embodiment of this application;

[0021] Figure 2 This is an exploded view of the pliers drive structure in one embodiment of this application;

[0022] Figure 3 This is an assembly diagram of the pliers head drive structure mounted on the handle portion in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Handle section; 11. First handle; 12. Second handle;

[0025] 2. Clamping bar assembly; 21. Clamping jaw assembly; 211. First clamping head; 212. Second clamping head; 22. Connecting rod assembly; 221. Outer tube; 222. Inner rod; 23. Rotating component; 24. Clamping bar fixing block; 25. Fixing ring;

[0026] 3. Blade drive assembly; 31. Blade; 32. Blade wrench; 321. Transmission groove; 33. Pusher slider; 331. First mounting part; 332. Second mounting part; 34. Transmission gear; 341. Inner ring gear; 342. Outer ring gear; 35. Gear pin; 36. Meshing gear; 37. Rotating pin;

[0027] 4. Pliers lever drive assembly; 41. Main wrench; 42. Closing slider; 43. Connecting rod; 44. First main spring; 45. Second main spring; 46. Spring retaining sleeve; 47. Fixing block; 48. Rotary contact block; 49. Contact assembly; 491. Contact ring; 492. Contact piece; 410. Connecting guide tube; 411. Pliers head inner pin. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] This application provides a pliers head driving structure, which is mounted on a handle portion 1. The handle portion 1 is formed by the mating connection of a first handle 11 and a second handle 12. The pliers head driving structure is partially located within the handle portion 1 and partially extends out of the handle portion 1. The pliers bar assembly 2 of this pliers head driving structure can rotate 360° around a first axis, and each pliers head in its jaw assembly 21 can be independently powered, ensuring continuous power supply to the pliers bar assembly 2 during rotation.

[0032] See Figure 1 and Figure 3 The forceps head drive structure includes a forceps bar assembly 2, a blade drive assembly 3, and a forceps bar drive assembly 4. The forceps bar assembly 2 is rotatably mounted on the handle portion 1 about a first axis, and specifically includes a jaw assembly 21 and a connecting rod assembly 22. The jaw assembly 21 is connected to the connecting rod assembly 22 for gripping tissue. A blade 31 is housed within the connecting rod assembly 22, and the blade drive assembly 3 is connected to the blade 31, thereby driving the blade 31 to reciprocate along the first axis. Simultaneously, the forceps bar drive assembly 4 is coupled to the connecting rod assembly 22 to drive the connecting rod assembly 22 to reciprocate along the first axis. With the reciprocating motion of the connecting rod assembly 22, it simultaneously drives the jaw assembly 21 to switch between an open and closed state, allowing the jaw assembly 21 to grip or release tissue. Furthermore, the forceps bar drive assembly 4 also includes a contact assembly 49, which is electrically connected to each forceps head in the jaw assembly 21.

[0033] In the following embodiments, the jaw assembly 21 includes a first jaw 211 and a second jaw 212, which are hinged together, and both the first jaw 211 and the second jaw 212 are movable jaws. The linkage assembly 22 includes an outer tube 221 and an inner rod 222 nested from the outside in, and the inner rod 222 is slidable relative to the outer tube 221 along a first axis. Furthermore, the middle section and the portion near the handle portion 1 of the inner rod 222 are generally T-shaped, and a receiving groove is formed along its axial direction on the inner rod 222. The blade 31 is accommodated in the receiving groove and is slidable relative to the inner rod 222 along the first axis. Additionally, the inner rod 222 is slidable relative to the outer tube 221 along the axial direction, and the blade 31 is slidable relative to the inner rod 222 along the axial direction.

[0034] Specifically, the first jaw 211 and the second jaw 212 are hinged to one end of the outer tube 221. The hinge point is located at the end of the outer tube 221 away from the handle portion 1. A drive groove (not shown in the figure) is provided on the first jaw 211 and the second jaw 212. A drive pin (not shown in the figure) is provided in the drive groove. The drive pin is also connected to one end of the inner rod 222. When the inner rod 222 drives the drive pin to move to the first position, the first jaw 211 and the second jaw 212 move closer to each other to clamp the tissue. When the inner rod 222 drives the drive pin to move to the second position, the first jaw 211 and the second jaw 212 move further apart to release the clamped tissue.

[0035] It should be noted that the first position mentioned here is the position in the drive groove away from the first jaw 211 and the second jaw 212, and the second position is the position in the drive groove close to the first jaw 211 and the second jaw 212.

[0036] The jaw assembly 2 also includes a rotating member 23 rotatably mounted on the handle portion 1. The rotating member 23 is configured to be connected to the end of the outer tube 221 near the handle portion 1, so that while driving the outer tube 221 to rotate around the first axis, it drives the jaw assembly 21 to rotate synchronously via the outer tube 221. Specifically, the rotating member 23 may be a rotating head, which is rotatably connected to the handle. A jaw fixing block 24 and a fixing ring 25 are also provided between the outer tube 221 and the rotating head for fixing. The fixing ring 25 cooperates with the jaw fixing block 24 to fix the outer tube 221 to the rotating head, thereby ensuring that the outer tube 221 can rotate synchronously when the rotating head is rotated. Meanwhile, since one end of the outer tube 221 is hinged to the first clamp head 211 and the second clamp head 212, the outer tube 221 can drive the first clamp head 211 and the second clamp head 212 to rotate synchronously while rotating, so that the first clamp head 211 and the second clamp head 212 can rotate around the first axis, thereby adjusting the clamping angle of the first clamp head 211 and the second clamp head 212 during treatment.

[0037] The clamp lever drive assembly 4 includes a main wrench 41, a closing slider 42, and a connecting rod 43. The main wrench 41 and the closing slider 42 are respectively hinged to both ends of the connecting rod 43. The main wrench 41 is movably connected to the handle part 1, specifically, the main wrench 41 is rotatably connected to the first handle 11 and / or the second handle 12 via a rotating shaft. The closing slider 42 is slidably connected to the first handle 11 and / or the second handle 12, so that when the main wrench 41 rotates, the main wrench 41 drives the connecting rod 43 to push the closing slider 42 to move along the first axis. The clamp lever drive assembly 4 also includes a fixing block 47, a rotating contact block 48, a first main spring 44, a second main spring 45, and a spring fixing sleeve 46. The fixing block 47 is connected to the inner rod 222 via the clamp head inner pin 411, and the closing slider 42 is connected to the spring fixing sleeve 46. By providing two flanges on the spring fixing sleeve 46 and a C-shaped buckle at one end of the closing slider 42, the buckle is engaged with the two flanges, so that the spring fixing sleeve 46 can rotate relative to the closing slider 42, but cannot slide relative to the closing slider 42 along its axial direction.

[0038] The clamp lever drive assembly 4 also includes a fixing block 47, a rotating contact block 48, a first main spring 44, a second main spring 45, and a spring retaining sleeve 46. The first main spring 44 is disposed between the fixing block 47 and the spring retaining sleeve 46 to cooperate with both. For example, a flange can be provided at one end of the fixing block 47 near the first clamp head 211 and the second clamp head 212. One end of the first main spring 44 abuts against the end of the spring retaining sleeve 46 away from the first clamp head 211 and the second clamp head 212. The other end of the first main spring 44 abuts against the end of the fixing block 47 with the flange. The end of the inner rod 222 away from the first clamp head 211 and the second clamp head 212 passes through the spring retaining sleeve 46 and the first main spring 44 in sequence and is inserted into the end of the fixing block 47 near the first clamp head 211 and the second clamp head 212. The end of the fixing block 47 away from the first clamp head 211 and the second clamp head 212 is connected to the rotating contact block 48.

[0039] In addition, the bottom surface of the closing slider 42 is provided with a protrusion, on which one end of a connecting rod 43 is connected. The connecting rod 43 is hinged to the closing slider 42 through the protrusion, and the other end of the connecting rod 43 is connected to the main wrench 41. Thus, when the main wrench 41 rotates, a force can be applied to the closing slider 42 through the connecting rod 43, enabling the closing slider 42 to move linearly. Furthermore, the end of the protrusion away from the jaw assembly 21 also cooperates with one end of the second main spring 45. The other end of the second main spring 45 can cooperate with the first handle 11 and / or the second handle 12, so that when the closing slider 42 moves, the closing force of the jaw assembly 21 can be controlled through the cooperation of the first main spring 44 and the second main spring 45. It should be noted that the elastic coefficient of the second main spring 45 is less than that of the first main spring 44.

[0040] Specifically, in use, when the operator turns the main wrench 41 relative to the handle, the main wrench 41, through the connecting rod 43 connected to it, pushes the closing slider 42 to move away from the jaw assembly 21. At this time, the protrusion at the bottom of the closing slider 42, connected to the second main spring 45, compresses the second main spring 45. Simultaneously, the fixing block 47 on the closing slider 42 drives the inner rod 222 connected to it to slide synchronously away from the jaw assembly 21. At this time, the inner rod 222 drives the drive pin to move to the first position, so that the first jaw 211 and the second jaw 212 come closer together to close. Based on this, as the operator continues to turn the main wrench 41, the main wrench 41, through the connecting rod 43, drives the closing slider 42 to continue to move in the predetermined direction, thereby causing the first main spring 44 to have a tendency to be compressed. Under the action of the first spring, the closing force of the first jaw 211 and the second jaw 212 can be increased, so that the first jaw 211 and the second jaw 212 can further clamp the tissue.

[0041] In order to enable the clamping bar assembly 2 to independently power the first clamping head 211 and the second clamping head 212 when rotating 360° around the first axis, a contact assembly 49 is also provided. The contact assembly 49 includes two sets of contact rings 491 and contact pieces 492. Taking a set of contact pieces 492 and contact rings 491 as an example, each contact piece 492 is roughly C-shaped and is mounted on the closed slider 42. The contact piece 492 itself is elastic, and the contact piece 492 and the contact ring 491 maintain a contact state for a long time. Two contact rings 491 and their corresponding contact pieces 492 are respectively installed on both sides of the rotating contact block 48 via connecting conduits 410. Each contact ring 491 can be electrically connected to the first clamp head 211 and the second clamp head 212 respectively. This electrical connection can be achieved by connecting the two contact rings 491 to the first clamp head 211 and the second clamp head 212 respectively via wires, or by connecting different wire portions of the inner rod 222 to the first clamp head 211 and the second clamp head 212 respectively. Preferably, the current flows through the first clamp head 211, the human tissue, and the second clamp head 212 to form a circuit. This ensures that the first clamp head 211 and the second clamp head 212 can be powered separately, while maintaining continuous power supply to both the first clamp head 211 and the second clamp head 212 as they rotate around the first axis.

[0042] Specifically, the two contact rings 491 are located between the fixed block 47 and the rotating contact block 48, and when the fixed block 47 and the rotating contact block 48 are connected, the fixed block 47 and the rotating contact block 48 are adapted to fix the two contact rings 491 installed on both sides of the rotating contact block 48. Therefore, this installation method makes it easier to install the two contact rings 491 compared to a single-polar device, and makes the entire assembly process simpler and more efficient.

[0043] See Figure 2 The blade drive assembly 3 includes a blade wrench 32 and a pusher slider 33. The pusher slider 33 is formed by the mating connection of a first mounting part 331 and a second mounting part 332. The end of the blade 31 away from the jaw assembly 21 is mounted on the pusher slider 33, and the pusher slider 33 is slidably connected to the first handle 11 and / or the second handle 12, so that the blade 31 can be synchronously displaced when the pusher slider 33 moves. The upper section of the blade wrench 32 is rotatably connected to the first handle 11 and / or the second handle 12 via a rotating pin 37. The middle section of the blade wrench 32 has a transmission groove 321, which is connected to the pusher slider 33 via a transmission assembly. The transmission assembly includes a transmission gear 34, which includes concentric inner ring teeth 341 and outer ring teeth 342. The transmission gear 34 is rotatably connected to the first handle 11 and / or the second handle 12 via a gear pin 35 passing through the inner ring teeth 341.

[0044] In addition, the inner ring teeth 341 of the transmission gear 34 are connected to the blade wrench 32, and the outer ring teeth 342 are connected to the pusher slider 33. Specifically, the blade wrench 32 has a transmission groove 321 in the middle section. The transmission groove 321 has an arc segment with the rotating pin 37 as the circle, and the arc segment has meshing teeth 36. The inner ring teeth 341 of the transmission gear 34 mesh with the meshing teeth 36 on the arc segment. The bottom of the pusher slider 33 also has meshing teeth 36. The outer ring teeth 342 of the transmission gear 34 mesh with the meshing teeth 36 on the bottom of the pusher slider 33. Thus, power can be transmitted to the pusher slider 33 through the inner ring teeth 341 and the outer ring teeth 342 of the transmission gear 34, so that the pusher slider 33 can move in a straight line.

[0045] In use, the blade wrench 32 can be turned by hand. The blade wrench 32 rotates around the rotating pin 37. When the blade wrench 32 rotates, it drives the transmission gear 34 connected to it to rotate. The transmission gear 34 drives the pusher slider 33 to slide. When the pusher slider 33 slides, it drives the blade 31 to slide, thereby cutting the tissue held by the first clamp 211 and the second clamp 212. After the cutting is completed, the blade wrench 32 returns to its original position, and drives the pusher slider 33 and the blade 31 to return to their original positions.

[0046] This application provides a surgical instrument employing the aforementioned forceps drive structure. The forceps rod assembly 2 of this forceps drive structure is mounted on the handle portion 1 and can rotate 360° around a first axis. The forceps rod drive assembly 4 is connected to the connecting rod assembly 22 to drive the connecting rod assembly 22 to reciprocate along the first axis. With the reciprocating motion of the connecting rod assembly 22, it simultaneously drives the jaw assembly 21 to switch between an open and closed state, enabling the jaw assembly 21 to clamp or release tissue. Each jaw in the jaw assembly 21 is also electrically connected to a contact assembly 49, and each jaw in the jaw assembly 21 can be independently powered through the contact assembly 49. Furthermore, each jaw in the jaw assembly 21 can achieve independent power supply, ensuring continuous power supply to the forceps rod assembly 2 during rotation.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A jaw driving structure mounted to a handle portion, characterized by, include: A clamping bar assembly, the clamping bar assembly being rotatably disposed on the handle portion about a first axis, the clamping bar assembly including a jaw assembly for clamping tissue and a connecting rod assembly connected to the jaw assembly; A blade drive assembly is connected to a blade disposed within the linkage assembly and is adapted to drive the blade to reciprocate along the first axis. as well as A jaw drive assembly is provided, which is coupled to the linkage assembly and is capable of driving the linkage assembly to reciprocate along the first axis and causing the jaw assembly to switch between an open state and a closed state. The jaw drive assembly includes a contact assembly, which is independently electrically connected to each jaw head in the jaw assembly.

2. The jaw drive structure of claim 1, wherein, The linkage assembly includes an outer tube and an inner rod nested from the outside in. The inner rod is slidable relative to the outer tube along the first axis. The inner rod has a receiving groove along its axial direction. The blade is received in the receiving groove and is slidable relative to the inner rod along the first axis.

3. The jaw drive structure of claim 2, wherein, The jaw assembly further includes a rotating member rotatably disposed on the handle portion, the rotating member being configured to be connected to one end of the outer tube near the handle portion, so as to drive the jaw assembly to rotate synchronously via the outer tube while driving the outer tube to rotate about the first axis.

4. The clamp head driving structure according to claim 2, characterized in that, The jaw assembly includes a first jaw and a second jaw, which are hinged together. The hinge point is located at the end of the outer tube away from the handle. Both the first and second jaws have drive grooves, and drive pins are provided in the drive grooves. The drive pins are connected to the inner rod, so that when the inner rod drives the drive pin to move to a first position, the first and second jaws move closer together to clamp tissue; when the inner rod drives the drive pin to move to a second position, the first and second jaws move further apart to release the clamped tissue.

5. The clamp head driving structure according to claim 4, characterized in that, The clamp drive assembly includes a main wrench, a closing slider, and a connecting rod. The main wrench and the closing slider are respectively hinged to both ends of the connecting rod. The main wrench is movably connected to the handle portion so that it can push the closing slider along the first axis via the connecting rod when rotated.

6. The clamp driving structure according to claim 5, characterized in that, The clamp lever drive assembly further includes a fixed block, a rotary contact block, a first main spring, a second main spring, and a spring retaining sleeve. The closed slider is connected to the spring retaining sleeve, and the spring retaining sleeve is adapted to rotate relative to the closed slider. The first main spring is disposed between the fixed block and the spring retaining sleeve. The inner rod passes through the spring retaining sleeve and the first main spring and is inserted into one end of the fixed block. The other end of the fixed block is connected to the rotary contact block.

7. The clamp driving structure according to claim 6, characterized in that, The contact assembly includes two sets of contact rings and contact plates. The contact rings in each set are normally connected to the contact plates, and the two contact rings are respectively installed on both sides of the rotating contact block and electrically connected to the first pliers and the second pliers respectively.

8. The clamp driving structure according to claim 6, characterized in that, The two contact rings are located between the fixed block and the rotating contact block, and when the fixed block and the rotating contact block are connected, the fixed block and the rotating contact block are adapted to fix the two contact rings installed on both sides of the rotating contact block.

9. The pliers drive structure according to any one of claims 1 to 8, characterized in that, The blade drive assembly includes a blade wrench and a pusher slider. The blade wrench is rotatably mounted on the handle portion, and the pusher slider is connected to the blade. The blade wrench is configured to be driveably connected to the pusher slider and is adapted to drive the pusher slider to move along the first axis when rotated.

10. The clamp head driving structure according to claim 9, characterized in that, The blade wrench is connected to the pusher slider via a transmission assembly. The transmission assembly includes a transmission gear. The inner ring teeth of the transmission gear are connected to the blade wrench, and the outer ring teeth of the transmission gear mesh with the pusher slider. This allows the transmission gear to rotate while the blade wrench is rotated, and the pusher slider to move in a straight line via the transmission gear.

11. A surgical instrument, characterized in that, The clamp head drive structure according to any one of claims 1 to 10 is adopted.

Images