An endoscopic suturing device

Abstract

This invention provides an endoscopic suturing device, including an endoscope, a main needle control module, an auxiliary needle control module, and a suture-cutting module. The main needle control module includes a main needle drive assembly, a first connecting rod, and a first control assembly connected in sequence. The auxiliary needle control module includes an auxiliary needle switching assembly, a second connecting rod, and a second control assembly connected in sequence. The suture-cutting module includes a suture-cutting assembly, a third connecting rod, and a third control assembly connected in sequence. This invention enables continuous suturing of human tissue wounds in a single procedure, employing a minimally invasive surgical approach. The surgical operation is smooth, the structure is rationally designed, and the control of the main and auxiliary needles is convenient, significantly improving the efficiency and quality of minimally invasive surgery. Furthermore, the suture-cutting assembly simultaneously performs human tissue lifting and suture cutting functions, reducing the valuable endoscope channel occupation compared to a two-module setup, while also saving module installation steps and simplifying the operation process.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an endoscopic suturing device. Background Technology

[0002] Minimally invasive surgery is a type of surgery with tiny incisions. Because of the small incision, it can reduce blood loss during the procedure and decrease postoperative pain. Specifically, during a minimally invasive surgery, the surgeon places an endoscope inside the patient's body to observe the internal environment. The endoscope facilitates the surgeon's ability to perform surgical procedures and perform postoperative suturing.

[0003] In minimally invasive surgery, there is a widespread need for devices that can close wounds with sutures, similar to those used in open abdominal surgery. Many existing techniques cannot perform continuous suturing of the wound in a single procedure, requiring multiple installations of the suturing device. Even among devices capable of continuous suturing in one procedure, operation is not entirely smooth. Therefore, there is a need for a one-piece endoscopic suturing device with a more rational structure and smoother operation for suturing wounds in locations such as the stomach. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing an integrated endoscopic suturing device with a reasonable structure and smooth operation.

[0005] To achieve the above objectives, the present invention provides an endoscopic suturing device, comprising an endoscope, a main needle control module, an auxiliary needle control module, and a lifting and cutting suture module.

[0006] The main needle control module includes a main needle drive assembly, a first connecting rod, and a first control assembly connected in sequence; the auxiliary needle control module includes an auxiliary needle switching assembly, a second connecting rod, and a second control assembly connected in sequence; the lifting and thread-cutting module includes a lifting and thread-cutting assembly, a third connecting rod, and a third control assembly connected in sequence; the first control assembly controls the main needle drive assembly via a first control wire, which passes through the first connecting rod; the second control assembly controls the auxiliary needle switching assembly via a second control wire, which passes through the second connecting rod; the third control assembly controls the lifting and thread-cutting assembly via a third control wire, which passes through the third connecting rod.

[0007] The main needle drive assembly is used to drive the main needle, the auxiliary needle switching assembly is used to fix and release the auxiliary needle, the auxiliary needle is matched with the main needle, the auxiliary needle is connected to the suture, and the lifting and cutting assembly is used to lift the human tissue and cut the suture after suturing.

[0008] The endoscope has multiple functional channels. The first functional channel corresponds to the main needle control module, through which the first connecting rod passes, and the main needle drive assembly is fixed to the inner end of the endoscope. The second functional channel corresponds to the auxiliary needle control module, through which the auxiliary needle switching assembly and the second connecting rod pass, and the auxiliary needle switching assembly is detachably disposed at the inner end of the endoscope. The third functional channel corresponds to the lifting and cutting suture module, through which the lifting and cutting suture assembly and the third connecting rod pass, and the lifting and cutting suture assembly is detachably disposed at the inner end of the endoscope. The fourth functional channel is used for the image module to pass through.

[0009] Furthermore, the main needle drive assembly includes a connecting arm and a main needle drive seat. The main needle drive seat is provided with a connecting groove. The connecting arm includes a first connecting arm and a second connecting arm. The first end of the first connecting arm is fixedly connected to the main needle. The second end of the first connecting arm is provided with a pin. The pin is movably connected to the connecting groove. The first end of the second connecting arm is hinged to the first connecting arm. The second end of the second connecting arm is hinged to the main needle drive seat. The first control wire is connected to the second end of the first connecting arm or the pin.

[0010] Furthermore, the main needle drive assembly also includes a main needle return spring, which is disposed in the connecting groove, and its two ends are respectively connected to the second end of the first connecting arm and the main needle drive seat.

[0011] Furthermore, the first control component includes a first control base, a fixed handle, and a movable handle. The fixed handle is fixedly connected to the first control base, and the movable handle is rotatable relative to the fixed handle. The second end of the first control wire is associated with the movable handle. A first return spring is also provided inside the first control base, and the first return spring is connected to the movable handle.

[0012] Furthermore, the auxiliary needle switching assembly includes a locking seat and a locking device disposed within the locking seat. The auxiliary needle is provided with a locking groove, and the locking device is made of an elastic material. A locking block matching the locking groove is provided at the first end of the locking device, and a control surface is provided at the second end of the locking device. The control surface is inclined relative to the axial direction of the locking device, and a control ball is provided at the position of the control surface. The control ball is connected to the first end of the first control wire.

[0013] Furthermore, the auxiliary needle is provided with a connecting block, the main needle is provided with a connecting groove that matches the connecting block, the auxiliary needle is provided with a suture connecting groove, and the first end of the suture is inserted into the suture connecting groove and fixed to the auxiliary needle.

[0014] Furthermore, the second control component includes a second control base and a control button, the control button being movably connected to the second control base, the second end of the second control wire being connected to the control button, and a second return spring being provided between the control button and the second control base.

[0015] Furthermore, the lifting and cutting assembly includes a lifting and cutting seat and a lifting anchor. The lifting anchor is spirally arranged, with a spike at the first end and the second end of the lifting anchor connected to the first end of the third control wire.

[0016] Furthermore, the third control component includes a third control base and a control knob, the control knob is movably connected to the third control base, the second end of the third control wire is connected to the control knob, and a third return spring is also provided between the control knob and the third control base.

[0017] Furthermore, the suture cutter is equipped with a blade for cutting the suture so that the suture is cut off after suturing and left in the wound.

[0018] The above-described solution of the present invention has the following beneficial effects:

[0019] The endoscopic suturing device provided by this invention, through the setting of a main needle control module, an auxiliary needle control module, and a suture-cutting module, can perform continuous suturing of human tissue wounds in one operation. It adopts a minimally invasive surgical approach, with smooth surgical operation, reasonable structural setting, and convenient control of the main needle and auxiliary needle, which significantly improves the efficiency and quality of minimally invasive surgery. In addition, the suture-cutting component has the functions of lifting human tissue and cutting sutures at the same time. Compared with the setting of two modules, it can reduce the occupation of the valuable endoscope channel, save module installation steps, and simplify the operation process.

[0020] Other beneficial effects of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the main needle drive assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the first control component of the present invention;

[0024] Figure 4 This is a schematic diagram of the auxiliary needle switching component and the lifting and cutting thread of the present invention;

[0025] Figure 5 This is a schematic diagram showing the cooperation between the auxiliary pin and the locking device of the present invention;

[0026] Figure 6 This is a schematic diagram illustrating the interaction between the auxiliary needle and the main needle in this invention.

[0027] Figure 7 This is a schematic diagram of the second control component of the present invention;

[0028] Figure 8 This is a schematic diagram of the third control component of the present invention;

[0029] Figure 9 This is a flowchart illustrating the process of cutting the suture after suturing according to the present invention.

[0030] [Explanation of Labels in the Attached Image]

[0031] 10-Operating table; 20-Endoscope; 30-Main needle control module; 31-First connecting rod; 32-First control wire; 33-Main needle drive seat; 34-First connecting arm; 35-Second connecting arm; 36-Connecting groove; 37-Pin; 38-Main needle return spring; 39-First control seat; 310-Fixed handle; 311-Modible handle; 40-Auxiliary needle control module; 41-Second connecting rod; 42-Second control wire; 44-Clamping seat; 45-Clamping device; 46-Clamping block; 47-Control surface; 48-Control ball; 49-Second control seat; 410-Control button; 411-Second return spring; 50-Lifting thread cutting module; 51-Third connecting rod; 52-Third control wire; 53-Lifting thread cutting seat; 54-Lifting anchor; 55-Third control seat; 56-Control knob; 57-Third return spring; 58-Blade; 60-Main needle; 61-Connecting groove; 70-Auxiliary needle; 71-Card slot; 72-Connecting block; 73-Suture connecting groove; 80-Suture. Detailed Implementation

[0032] To make the technical problems, solutions, and advantages of this invention clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figure 1 As shown, an embodiment of the present invention provides an endoscopic suturing device, including an operating table 10, an endoscope 20, a main needle control module 30, an auxiliary needle control module 40, and a suture-cutting module 50. The main needle control module 30 includes a main needle drive assembly, a first connecting rod 31, and a first control assembly connected in sequence. The auxiliary needle control module 40 includes an auxiliary needle switching assembly, a second connecting rod 41, and a second control assembly connected in sequence. The suture-cutting module 50 includes a suture-cutting assembly, a third connecting rod 51, and a third control assembly connected in sequence. The first control assembly is independent of the operating table 10. The second control assembly of the auxiliary needle control module and the third control assembly of the suture-cutting module are both mounted on the operating table 10. The operating table 10 can be fixed to the arm or other installation position by a fixing part, facilitating the operator's integrated operation of the three modules.

[0036] The endoscope 20 has multiple functional channels, including four in this embodiment. The first functional channel corresponds to the main needle control module; after installation, the first connecting rod 31 passes through the first functional channel, and the main needle drive assembly is fixed to the inner end of the endoscope 20. The second functional channel corresponds to the auxiliary needle control module; after installation, the auxiliary needle switching assembly and the second connecting rod 41 pass through the second functional channel, and the auxiliary needle switching assembly extends out from the inner end of the endoscope 20. The third functional channel corresponds to the lifting and cutting suture module; after installation, the lifting and cutting suture assembly and the third connecting rod 51 pass through the third functional channel, and the lifting and cutting suture assembly extends out from the inner end of the endoscope 20. The fourth functional channel is used for the passage of the image module. The first control component controls the main needle drive assembly via a first control wire 32, which passes through the first connecting rod 31. The second control component controls the auxiliary needle switching assembly via a second control wire 42, which passes through the second connecting rod 41. The third control component controls the lifting and shearing assembly via a third control wire 52, which passes through the third connecting rod 51. Transmitting driving force through the control wire ensures accurate control.

[0037] In this embodiment, the main needle control module 30 controls the main needle 60, and the auxiliary needle control module controls the auxiliary needle 70. The main needle 60 and the auxiliary needle 70 cooperate with each other. Initially, the main needle 60 is integrated with the auxiliary needle 70, which is connected to the end of the suture 80. When suturing a wound in human tissue (e.g., a stomach wall wound), the main needle 60 and the auxiliary needle 70 are inserted through a hole on the first side of the wound. Then, the auxiliary needle 70 is inserted into the auxiliary needle switching assembly, which fixes the auxiliary needle 70 so that it disengages from the main needle 60 after the main needle 60 is reset. Then, the main needle 60 (individually) is inserted through a hole on the second side of the wound. After the auxiliary needle 70 is inserted, the auxiliary needle switching assembly releases the auxiliary needle 70, and the main needle 60 resets, causing the auxiliary needle 70 to pass through the second side of the wound in the opposite direction. This process is repeated to connect the two sides of the wound with the suture 80. Tightening the suture 80 completes the suturing of the wound.

[0038] Therefore, during the suturing process, it is necessary to repeatedly drive the main needle 60 to puncture and reposition the human tissue using the corresponding control wire, and to fix and release the auxiliary needle 70. Simultaneously, as... Figure 2As shown, the main needle drive assembly includes a connecting arm fixedly connected to the end of the main needle 60, and a main needle drive seat 33 connected to and supporting the connecting arm. The connecting arm includes a first connecting arm 34 and a second connecting arm 35. The main needle drive seat 33 has a connecting groove 36. The first end of the first connecting arm 34 is fixedly connected to the main needle 60, and the second end of the first connecting arm 34 is provided with a pin 37, which is movably connected to the connecting groove 36 and slides relative to the connecting groove 36 during sewing. The first end of the second connecting arm 35 is hinged to the first connecting arm 34, and the second end of the second connecting arm 35 is hinged to the main needle drive seat 33. Therefore, the first connecting arm 34 and the second connecting arm 35 together form a double-arm structure. The first control wire 32 is connected to the second end of the first connecting arm 34 or the pin 37. When the first control component pulls the first control wire 32, the first control wire 32 can pull the second end of the first connecting arm 34 to translate, thereby causing the second end of the first connecting arm 34 to form a combination of translation and rotation around the hinge point of the second connecting arm 35, puncturing human tissue according to a preset trajectory. The reset of the main needle 60 is accomplished by the main needle reset spring 38. The main needle reset spring 38 is set in the connecting groove 36, and its two ends are respectively connected to the second end (pin 37) of the first connecting arm 34 and the main needle drive seat 33, so that when the first control wire 32 pulls the first end of the first connecting arm 34 to translate, the main needle reset spring 38 is compressed. When resetting, the main needle reset spring 38 releases elastic potential energy, causing the first end of the first connecting arm 34 to translate in the opposite direction.

[0039] Therefore, by combining the first connecting arm 34 and the second connecting arm 35, this transmission method can further improve the smoothness of the main needle 630 drive compared to gear transmission, and the transmission of tension can be more direct, which can significantly reduce jamming.

[0040] At the same time, such as Figure 3 As shown, the first control assembly includes a first control base 39, a fixed handle 310, and a movable handle 311. The fixed handle 310 is fixedly connected to the first control base 39, and the movable handle 311 is rotatable relative to the fixed handle 310, allowing the operator to hold both the fixed handle 310 and the movable handle 311 during operation. Pressing the movable handle 311 pulls the first control wire 32. The second end of the first control wire 32 is connected to the movable handle 311 within the first control base 39. Resetting is achieved via a main needle reset spring 38. Alternatively, a first reset spring can be further provided within the first control base 39 to directly provide elastic force for the movable handle 311 to reset.

[0041] At the same time, such as Figure 4 , Figure 5As shown, the auxiliary needle switching assembly includes a locking seat 44 and a locking device 45 disposed within the locking seat 44. The auxiliary needle 70 has a locking groove 71, and the first end of the locking device 45 has a locking block 46 that matches the locking groove 71. The locking device 45 itself is made of an elastic material. When the auxiliary needle 70 is inserted into the locking device 45 from its first end, the conical surface (spiked portion) at the tip of the auxiliary needle 70 allows the locking block 46 to open, moving until the locking block 46 aligns with the locking groove 71 and then elastically recovers to lock the auxiliary needle 70 in place. A control surface 47 is provided at the second end of the locking device 45, and the control surface 47 is also inclined relative to the axial direction of the locking device 45. A control ball 48, which is spherical (or other shaped), is also provided at the control surface 47 and is connected to the first end of the first control wire 32. When the auxiliary pin 70 needs to be released, the second control wire 42 pushes the control ball 48, causing the control ball 48 to move along the control surface 47 towards the first end of the locking device 45. This opens the first end of the locking device 45, and the locking block 46 exits from the locking groove 71, releasing the auxiliary pin 70 and facilitating the engagement of the main pin 60 and the auxiliary pin 70. Of course, the first end of the locking device 45 also has multiple notches to form a petal-like structure, allowing it to open smoothly under the action of the control ball 48.

[0042] At the same time, such as Figure 6 As shown, the main needle 60 and auxiliary needle 70 in this embodiment also adopt a similar structure. That is, a connecting block 72 is provided at the rear of the auxiliary needle 70, and a connecting groove 61 is provided at the front of the main needle 60. Of course, the thickness of the connecting groove 61 and the connecting block 72 is small and conical, so the limiting force is smaller compared with that of the auxiliary needle 70 and the retainer 45, which makes it easier for the retainer 45 to fix and release the auxiliary needle 70. In addition, in this embodiment, a suture connecting groove 73 is provided on the auxiliary needle 70. The first end of the suture 80 (after knotting) is inserted into the suture connecting groove 73 to fix it with the auxiliary needle 70.

[0043] At the same time, such as Figure 7As shown, the second control component includes a second control base 49 and a control button 410. The control button 410 is movably connected to the second control base 49 and can move relative to the second control base 49. The second end of the second control wire 42 is connected to the control button 410. When the operator presses the control button 410, the second control wire 42 (which has a certain rigidity) can be pushed, causing the control ball 48 at the first end of the second control wire 42 to move towards the first end of the latch 45, thus releasing the auxiliary needle 70. In a preferred embodiment, a second return spring 411 is also provided between the control button 410 and the second control base 49. When the operator releases the control button 410, the control button 410 will automatically reset under the action of the second return spring 411, thereby resetting the control ball 48. Therefore, after the auxiliary needle 70 is engaged with the main needle 60, simply releasing the control button 410 allows the first control component to control the main needle 60 to drive the auxiliary needle 70, simplifying the operator's operation.

[0044] In this embodiment, the lifting suture cutting assembly includes a lifting suture cutting seat 53 and a lifting anchor 54. The first end of the lifting anchor 54 is provided with a spike, and the entire assembly is spirally designed to smoothly anchor into and lift human tissue, facilitating puncture of the human tissue by the main needle 60 and auxiliary needle 70, or by the main needle 60 alone. The second end of the lifting anchor 54 is connected to the first end of a third control wire 52 within the lifting suture cutting seat 53. The third control wire 52 controls both the displacement and rotation of the lifting anchor 54, ensuring smooth anchoring into the human tissue.

[0045] At the same time, such as Figure 8 As shown, the third control component includes a third control base 55 and a control knob 56. The control knob 56 is movably connected to the third control base 55 and can move and rotate relative to the third control base 55. The second end of the third control wire 52 is connected to the control knob 56. When the operator presses the control knob 56, the third control wire 52 can be pushed (the third control wire 52 has a certain rigidity), thereby moving the lifting anchor 54 at the first end of the third control wire 52 outwards towards the lifting suture holder 53 until it is inserted into the human tissue. Then, the control knob 56 is rotated synchronously to allow the lifting anchor 54 to rotate and anchor into the human tissue. Finally, the control knob 56 is pulled outwards. Similarly, a third return spring 57 is also provided between the control knob 56 and the third control base 55. When the operator releases the control knob 56, the control knob 56 will automatically return to its original position under the action of the third return spring 57, thereby resetting the lifting anchor 54. Of course, before this, the control knob 56 needs to be rotated in the opposite direction to separate it from the human tissue.

[0046] In this embodiment, a blade 58 is provided at the end of the suture cutter 53. Preferably, the blade 58 is annular and integrally formed with the edge of the suture cutter 53. The blade 58 is used to cut the suture 80 so that the suture 80 after suturing is cut off and left at the wound site. Meanwhile, as... Figure 9 As shown, after suturing is completed, the first end of the suture 80 and the auxiliary needle 70 remain near the wound. The second end of the suture 80 (the second end after cutting) is located in the first functional channel of the endoscope 20, i.e., the channel where the auxiliary needle control module is located, and it extends to the outside without being cut. Therefore, when cutting the suture, the lifting anchor 54 is first extended relative to the lifting suture cutting seat 53 by controlling the knob 56, and then the entire endoscope 20 is rotated. Due to the different channels, the suture 80 and the lifting anchor 54 have different centers of rotation, and the first end of the suture 80 does not move. Therefore, the suture 80 can be wrapped around the lifting anchor 54. Then the lifting anchor 54 is rotated. Based on the spiral shape of the lifting anchor 54, the suture 80 can be firmly wrapped around. Then pull the control knob 56 outward to retract the lifting anchor 54 into the lifting suture cutter seat 53. When the suture 80 passes the edge of the lifting suture cutter seat 53, it will be directly cut by the sharp blade 58, so that the second end of the suture 80 is formed and retained near the wound. The remaining suture 80 on the lifting anchor 54 can be recovered by removing the entire lifting suture cutter module.

[0047] As described above, the lifting and suture-cutting assembly provided in this embodiment has both human tissue lifting and suture cutting functions. Compared with the setup of two modules, it can reduce the valuable channel occupation of the endoscope 20, save module installation steps, and simplify the operation process.

[0048] It should be noted that, in this embodiment, no structure such as an auxiliary needle 70 is provided for the second end of the suture 80. Instead, a barb structure is provided at the second end of the suture 80. The barb structure is used to improve the degree of integration with human tissue and will not loosen before the wound heals.

[0049] In summary, the endoscopic suturing device provided in this embodiment, through the configuration of the main needle control module 30, the auxiliary needle control module 40, and the lifting and cutting suture module 50, can perform continuous suturing of human tissue wounds in one operation. It adopts a minimally invasive surgical approach, the surgical operation is smooth, the structure is reasonably configured, and the control of the main needle 60 and the auxiliary needle 70 is convenient, which significantly improves the efficiency and quality of minimally invasive surgery.

[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 above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the 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 application should be determined by the appended claims.

Claims

1. An endoscopic suturing device, characterized in that, Includes an endoscope, a main needle control module, an auxiliary needle control module, and a suture-cutting module; The main needle control module includes a main needle drive assembly, a first connecting rod, and a first control assembly connected in sequence; the auxiliary needle control module includes an auxiliary needle switching assembly, a second connecting rod, and a second control assembly connected in sequence; the lifting and thread-cutting module includes a lifting and thread-cutting assembly, a third connecting rod, and a third control assembly connected in sequence; the first control assembly controls the main needle drive assembly via a first control wire, which passes through the first connecting rod; the second control assembly controls the auxiliary needle switching assembly via a second control wire, which passes through the second connecting rod; the third control assembly controls the lifting and thread-cutting assembly via a third control wire, which passes through the third connecting rod. The main needle drive assembly is used to drive the main needle, the auxiliary needle switching assembly is used to fix and release the auxiliary needle, the auxiliary needle is matched with the main needle, the auxiliary needle is connected to the suture, and the lifting and cutting assembly is used to lift the human tissue and cut the suture after suturing. The endoscope is provided with multiple functional channels. The first functional channel corresponds to the main needle control module. The first connecting rod passes through the first functional channel. The main needle drive assembly is fixed to the inner end of the endoscope. The second functional channel corresponds to the auxiliary needle control module. The auxiliary needle switching component and the second connecting rod pass through the second functional channel. The auxiliary needle switching component is detachably disposed at the inner end of the endoscope. The third functional channel corresponds to the lifting and cutting wire module. The lifting and cutting wire component and the third connecting rod pass through the third functional channel. The lifting and cutting wire component is detachably disposed at the inner end of the endoscope. The fourth functional channel is used for the image module to pass through.

2. The endoscopic suturing device according to claim 1, characterized in that, The main needle drive assembly includes a connecting arm and a main needle drive seat. The main needle drive seat is provided with a connecting groove. The connecting arm includes a first connecting arm and a second connecting arm. The first end of the first connecting arm is fixedly connected to the main needle. The second end of the first connecting arm is provided with a pin. The pin is movably connected to the connecting groove. The first end of the second connecting arm is hinged to the first connecting arm. The second end of the second connecting arm is hinged to the main needle drive seat. The first control wire is connected to the second end of the first connecting arm or the pin.

3. The endoscopic suturing device according to claim 2, characterized in that, The main needle drive assembly also includes a main needle return spring, which is disposed in the connecting groove. The two ends of the main needle return spring are respectively connected to the second end of the first connecting arm and the main needle drive seat.

4. An endoscopic suturing device according to claim 1, characterized in that, The first control component includes a first control base, a fixed handle, and a movable handle. The fixed handle is fixedly connected to the first control base, and the movable handle is rotatable relative to the fixed handle. The second end of the first control wire is associated with the movable handle. The first control base is also provided with a first return spring, which is connected to the movable handle.

5. An endoscopic suturing device according to claim 1, characterized in that, The auxiliary needle switching assembly includes a locking seat and a locking device disposed within the locking seat. The auxiliary needle is provided with a locking groove. The locking device is made of an elastic material. A locking block matching the locking groove is provided at the first end of the locking device. A control surface is provided at the second end of the locking device. The control surface is inclined relative to the axial direction of the locking device. A control ball is provided at the position of the control surface. The control ball is connected to the first end of the first control wire.

6. An endoscopic suturing device according to any one of claims 1-5, characterized in that, The auxiliary needle is provided with a connecting block, the main needle is provided with a connecting groove that matches the connecting block, the auxiliary needle is provided with a suture connecting groove, and the first end of the suture is inserted into the suture connecting groove and fixed to the auxiliary needle.

7. An endoscopic suturing device according to claim 5, characterized in that, The second control component includes a second control base and a control button. The control button is movably connected to the second control base. The second end of the second control wire is connected to the control button. A second return spring is also provided between the control button and the second control base.

8. An endoscopic suturing device according to claim 1, characterized in that, The lifting and cutting assembly includes a lifting and cutting seat and a lifting anchor. The lifting anchor is spirally arranged, with a spike at the first end and the second end of the lifting anchor connected to the first end of the third control wire.

9. An endoscopic suturing device according to claim 8, characterized in that, The third control component includes a third control base and a control knob. The control knob is movably connected to the third control base. The second end of the third control wire is connected to the control knob. A third return spring is also provided between the control knob and the third control base.

10. An endoscopic suturing device according to claim 8, characterized in that, The suture cutter is equipped with a blade for cutting the suture, so that the suture is cut off after suturing and left in the wound.

Images