An endoscopic suture control device

Abstract

This invention provides an endoscopic suturing control device, including a main needle drive module and a handle control module. The main needle drive module includes a main needle that matches an auxiliary needle, a connecting arm fixedly connected to the end of the main needle, a main needle drive seat connected to the connecting arm, and a drive wire connected to the connecting arm. The handle control module includes a control seat, a fixed handle, and a movable handle. The control seat contains a control box and a control arm. The end of the drive wire is connected to the control box, and the control box is movably connected to the control seat. The movable handle is connected to the control box via the control arm. This invention allows the surgeon to operate externally using the handle control module, ensuring a highly efficient, convenient, and smooth wound suturing process, and improving the reliability of endoscopic minimally invasive surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an endoscopic suture control 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 insertions of the suturing device. Even among devices capable of continuous suturing in a single procedure, the driving of the master needle and the overall operation are still not very convenient; there is still a noticeable feeling of jamming during needle insertion, affecting the quality of wound suturing. Summary of the Invention

[0004] The purpose of this invention is to provide a device that offers smoother main needle drive and more convenient operation, addressing the shortcomings of the aforementioned background technology.

[0005] To achieve the above objectives, the present invention provides an endoscopic suturing control device, including a main needle drive module and a handle control module;

[0006] The main needle drive module includes a main needle that matches the auxiliary needle, a connecting arm that is fixedly connected to the end of the main needle, a main needle drive seat that is connected to the connecting arm, and a drive steel wire that is connected to the connecting arm.

[0007] The handle control module includes a control base, a fixed handle, and a movable handle. The fixed handle is fixedly connected to the control base, and the movable handle is rotatable relative to the fixed handle. The control base contains a control box and a control arm. The end of the drive wire is connected to the control box, and the control box is movably connected to the control base. The movable handle is connected to the control box via the control arm. When the movable handle rotates, it drives the control box to translate, so that the drive wire drives the connecting arm and the main needle.

[0008] Furthermore, the control arm includes a first control arm, and a control block is also provided inside the control seat. The control block is hinged to the control seat, and the movable handle is fixedly connected to the control block. The first end of the first control arm is hinged to the control block, and the hinge point does not coincide with the rotation center of the control block itself. The second end of the first control arm is hinged to the control box.

[0009] Furthermore, the control arm also includes a second control arm, the first end of the second control arm is hinged to the control block, and the hinge point coincides with the rotation center of the control block itself. The second end of the second control arm is provided with a control pin, the control box is provided with a control groove, the control pin is inserted into the control groove, and can slide relative to the control groove.

[0010] The control slot is provided with a first control point and a second control point. A first control segment and a second control segment are connected in sequence between the first control point and the second control point. When the movable handle is pressed, the control pin moves from the first control point to the second control point, passing through the first control segment and the second control segment in sequence. The second control point is used to limit the control pin, so that the control box is locked in the corresponding position.

[0011] Furthermore, the second control segment is configured as a V-shaped groove, and the second control point is located at the bottom end of the V-shaped groove.

[0012] Furthermore, a box return spring is provided inside the control base, and the two ends of the box return spring are respectively connected to the control base and the control box.

[0013] Furthermore, the control base is also provided with a wire guide assembly, which includes multiple guide wheels. The guide wheels are freely rotatable, and the end of the drive wire passes around the multiple guide wheels.

[0014] Furthermore, the control seat is also provided with a pre-tightening adjustment mechanism, which includes an adjustment block and an adjustment groove. The adjustment groove is fixedly connected to the control seat, and the adjustment block is movably connected to the adjustment groove. The adjustment block has a screw hole, and a bolt is provided in the screw hole. The adjustment groove has a through hole that matches the bolt. One of the guide wheels is provided on the adjustment block.

[0015] Furthermore, the connecting arm includes a first connecting arm and a second connecting arm. The main needle drive seat is provided with a connecting groove. 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 driving wire is connected to the second end of the first connecting arm.

[0016] Furthermore, the main needle drive module also includes a main needle return spring, the two ends of which are respectively connected to the second end of the first connecting arm and the main needle drive seat.

[0017] Furthermore, the main needle return spring is sleeved on the drive steel wire, and the tension direction of the drive steel wire is coaxial with the elastic force direction of the main needle return spring.

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

[0019] The endoscopic suturing control device provided by this invention, through the setting of a main needle drive module and a handle control module, makes the suturing control, locking and unlocking operations of the main needle reasonable and in line with the operation logic, thereby improving the reliability and convenience of the suturing process. The main needle drive module is set at the front end of the endoscope, and the drive wire extends from the endoscope channel to the outside and connects to the handle control module, so that the surgeon can operate outside the body through the handle control module, ensuring that the wound suturing process is efficient, convenient and smooth, and improving the reliability of endoscopic minimally invasive surgery.

[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 module of the present invention;

[0023] Figure 3 This is a schematic diagram of the main pin reset spring installation according to the present invention;

[0024] Figure 4 This is a front view of the handle control module of the present invention;

[0025] Figure 5 This is a reverse view of the handle control module of the present invention;

[0026] Figure 6 This is a schematic diagram of the control slot configuration of the present invention.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1-Main needle; 2-Main needle drive seat; 3-Drive wire; 4-First connecting arm; 5-Second connecting arm; 6-Connecting groove; 7-Pin; 8-Main needle return spring; 9-Control seat; 10-Fixed handle; 11-Modible handle; 12-Control box; 13-Wire hole; 14-First control arm; 15-Second control arm; 16-Control block; 17-Control pin; 18-Control groove; 19-First control point; 20-Second control point; 21-First control section; 22-Second control section; 23-Box return spring; 24-Guide wheel; 25-Adjusting block; 26-Adjusting groove; 27-Bolt. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] like Figure 1 , Figure 2As shown, an embodiment of the present invention provides an endoscopic suture control device, including a main needle drive module and a handle control module. The main needle drive module includes a main needle 1 that matches an auxiliary needle, a connecting arm fixedly connected to the end of the main needle 1, a main needle drive seat 2 connected to and supporting the connecting arm, and a drive wire 3 connected to and driving the connecting arm. In the initial suture state, the main needle 1 is integrated with the auxiliary needle, which is connected to the end of the suture thread. When suturing a wound in human tissue (such as a stomach wall wound), driven by the drive wire 3, the main needle 1 and the auxiliary needle are inserted through the hole on the first side of the wound. Then, the auxiliary needle is inserted into the auxiliary needle control module, which fixes the auxiliary needle so that it disengages from the main needle 1 after the main needle 1 is reset. Then, the drive wire 3 drives the main needle 1 (individually) to be inserted through the hole on the second side of the wound. After the auxiliary needle is inserted, the auxiliary needle control module releases the auxiliary needle, and the main needle 1 is reset, causing the auxiliary needle to pass through the second side of the wound in the opposite direction. The above process is repeated to connect the two sides of the wound with the suture. Tightening the suture completes the suturing of the wound.

[0033] Therefore, during the suturing process, the main needle 1 needs to be repeatedly driven by the driving wire 3 to puncture the human tissue. Simultaneously, the main needle also needs to be reset multiple times. To avoid the feeling of jamming during puncturing and resetting the human tissue and to improve the smoothness of the suturing operation, this embodiment includes a first connecting arm 4 and a second connecting arm 5. A connecting groove 6 is provided on the main needle drive seat 2. The first end of the first connecting arm 4 is fixedly connected to the main needle 1, and the second end of the first connecting arm 4 is provided with a pin 7, which is movably connected to the connecting groove 6 and slides relative to the connecting groove 6 during the suturing process. The first end of the second connecting arm 5 is hinged to the first connecting arm 4, and the second end of the second connecting arm 5 is hinged to the main needle drive seat 2. Therefore, the first connecting arm 4 and the second connecting arm 5 together form a double-arm structure. The drive wire 3 is connected to the second end of the first connecting arm 4 or the pin 7. When the handle control module pulls the drive wire 3, the drive wire 3 can pull the second end of the first connecting arm 4 to translate, so that the second end of the first connecting arm 4 forms a combination of translation and rotation around the hinge point of the second connecting arm 5, and punctures human tissue according to a preset trajectory.

[0034] The reset of the main needle 1 is accomplished by the main needle reset spring 8. The main needle reset spring 8 is set in the connecting groove 6, and its two ends are connected to the second end (pin 7) of the first connecting arm 4 and the main needle drive seat 2, respectively. When the driving wire 3 pulls the first end of the first connecting arm 4 to translate, the main needle reset spring 8 is compressed. During reset, the main needle reset spring 8 releases its elastic potential energy, causing the first end of the first connecting arm 4 to translate in the opposite direction.

[0035] At the same time, such as Figure 3As shown, in a preferred embodiment, the main needle return spring 8 is sleeved on the drive wire 3, that is, the direction of the tension of the drive wire 3 and the direction of the elastic force of the main needle return spring 8 are coaxial, which can ensure that the driving force and return force of the main needle 1 are applied smoothly and improve the stability of the movement of the main needle 1.

[0036] It is worth mentioning that, for the rotation (superimposed translation) drive of the main needle 1, the solution provided in this embodiment can further improve the smoothness of the drive of the main needle 1 compared with rotation drive methods such as gears, and the transmission of tension can be more direct, without the need to transmit torque through gear meshing.

[0037] As described above, during the suturing process, the drive wire 3 needs to be continuously pulled to cause the main needle 1 to undergo compound motion for puncture and repositioning. Simultaneously, as... Figure 4 , Figure 5 As shown, the handle control module includes a control base 9, a fixed handle 10, and a movable handle 11. The fixed handle 10 is fixedly connected to the control base 9, while the movable handle 11 can rotate relative to the fixed handle 10, allowing the operator to hold both the fixed handle 10 and the movable handle 11 during operation. Pressing the movable handle 11 pulls the drive wire 3. The control base 9 also contains a wire guide assembly, a control box 12, and a control arm. The end of the drive wire 3 enters through the wire hole 13 in the control base 9, is guided by the wire guide assembly, and then connects to the control box 12. The control box 12 is movably connected to the control base 9 (using a slot-limiting method) and can translate relative to the control base 9. Therefore, when the control box 12 translates relative to the control base 9 to the first side, it pulls the drive wire 3, driving the main needle 1 to puncture human tissue. When the main needle reset spring 8 elastically resets, the reverse pulling force of the drive wire 3 causes the control box 12 to move in the opposite direction, also achieving a reset. As described above, the position of the control box 12 determines the position of the end of the drive wire 3, that is, the position of the main needle 1. In this embodiment, the movable handle 11 is connected to the control box 12 through the control arm so that when the movable handle 11 rotates, it can drive the control box 12 to move to the first side, thereby achieving the purpose of driving the main needle 1.

[0038] Considering that in actual operation, it may be necessary to maintain the main needle 1 in the post-puncture position while the operator needs to perform other operations, making it inconvenient to maintain the pressed position of the movable handle 11, a locking function needs to be added to the handle control module to prevent the main needle 1 from resetting under the action of the main needle reset spring 8. Based on this, in this embodiment, the control arm includes a first control arm 14 and a second control arm 15, and a control block 16 is also provided in the control seat 9. The control block 16 is hinged to the control seat 9, the movable handle 11 is fixedly connected to the control block 16, the first end of the first control arm 14 is hinged to the control block 16, and the second end of the first control arm 14 is hinged to the control box 12. When the movable handle 11 is pressed, the control block 16 rotates relative to the movable handle 11. Since the control box 12 is limited by the control seat 9, the control box 12 will translate to the first side relative to the control seat 9, causing the drive wire 3 to be stretched and compressing the main needle reset spring 8.

[0039] The first end of the second control arm 15 is hinged to the control block 16, and the hinge point coincides with the rotation center of the control block 16 itself. The second end of the second control arm 15 is provided with a control pin 17, and correspondingly, the control box 12 is provided with a control groove 18. The control pin 17 is inserted into the control groove 18 and can slide relative to the control groove 18. Simultaneously, if... Figure 6 As shown, the control slot 18 is provided with a first control point 19 and a second control point 20. A first control segment 21 and a second control segment 22 are sequentially connected between the first control point 19 and the second control point 20. When the movable handle 11 is pressed, during the translation of the control box 12, the second end (control pin 17) of the second control arm 15 moves from the first control point 19 to the second control point 20, passing through the first control segment 21 and the second control segment 22 in sequence. In a specific embodiment of this example, the second control segment 22 is set as a V-shaped groove, and the second control point 20 is located at the bottom of the V-shaped groove. When the control pin 17 moves to the connection position between the first control segment 21 and the second control segment 22, the control box 12 moves to the limit position on the first side, at which time the movable handle 11 is also pressed to the limit position. During the transition of the control pin 17 from the first control segment 21 to the second control segment 22 and then to the second control point 20, the control box 12 will reset a small distance on the second side (under the action of elastic force) so that the control pin 17 is at the second control point 20. Thus, the control box 12 is limited by the control pin 17, locking it in this position. At this time, the main needle 1 is still in the puncture state and can maintain a stable state under the action of the V-groove, without needing to press the movable handle 11, which facilitates other operations by the operator. When it is necessary to reset the main needle 1, first press the movable handle 11 to move the control pin 17 to the first control section 21, and then release the movable handle 11. The control box 12 can move to the second side to the limit position under the action of elastic force, so that the control pin 17 is reset to the first control point 19.

[0040] As described above, the handle control module provided in this embodiment has reasonable settings for sew control and locking / unlocking operations, which are consistent with operational logic and improve the reliability and convenience of the sewing process. Of course, in other embodiments, a locking structure for locking the movable handle 11, such as a locking pin, can also be provided on the control base 9 to achieve the purpose of locking and holding, but obviously the convenience of operation is not as good as this solution.

[0041] Since the reset of the control box 12 relies on elastic force, when only the main needle reset spring 8 is provided, considering the length of the drive wire 3 and the preload, the transmission of elastic force may be delayed, affecting the operation process. Therefore, in this embodiment, a box reset spring 23 is further provided inside the control seat 9, with both ends of the box reset spring 23 connected to the control seat 9 and the control box 12, respectively. It should be noted that the box reset spring 23 is mainly subjected to tensile deformation; when it elastically contracts, it can pull the control box 12 to the second side. Based on the setting of the box reset spring 23, the control box 12 can be reset more quickly and smoothly, further improving reliability.

[0042] In this embodiment, the wire guide assembly includes multiple guide wheels 24, which are rotatable. The end of the driving wire 3 is guided by the multiple guide wheels 24 and then fixedly connected to the control box 12, so that the driving wire 3 has a more reasonable path within the control seat 9. As a preferred embodiment, this embodiment also includes a pre-tension adjustment mechanism to adjust the pre-tension force of the driving wire 3. Specifically, the pre-tension adjustment mechanism includes an adjustment block 25 and an adjustment groove 26. The adjustment groove 26 is fixedly connected to the control seat 9, and the adjustment block 25 is movably connected to the adjustment groove 26. The adjustment block 25 is also provided with a screw hole, in which a bolt 27 is provided. The adjustment groove 26 is provided with a through hole that matches the bolt 27. One guide wheel 24 of the wire guide assembly is set on the adjustment block 25. The position of the guide wheel 24 is adjusted by changing the depth of the bolt 27 in the adjustment groove 26, thereby adjusting the pre-tension force of the driving wire 3.

[0043] In summary, the endoscopic suturing control device provided in this embodiment has a main needle drive module located at the front end of the endoscope, and a drive wire 3 extending from the endoscope channel to the outside and connecting to the handle control module, so that the operator can operate outside the body through the handle control module, ensuring the efficiency, convenience and smoothness of the wound suturing process, and improving the reliability of endoscopic minimally invasive surgery.

[0044] 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.

[0045] 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 suture control device, characterized in that, Includes the main needle drive module and the handle control module; The main needle drive module includes a main needle that matches the auxiliary needle, a connecting arm that is fixedly connected to the end of the main needle, a main needle drive seat that is connected to the connecting arm, and a drive steel wire that is connected to the connecting arm. The handle control module includes a control base, a fixed handle, and a movable handle. The fixed handle is fixedly connected to the control base, and the movable handle is rotatable relative to the fixed handle. The control base contains a control box and a control arm. The end of the drive wire is connected to the control box, and the control box is movably connected to the control base. The movable handle is connected to the control box via the control arm. When the movable handle rotates, it drives the control box to translate, so that the drive wire drives the connecting arm and the main needle. The control arm includes a first control arm, and a control block is also provided inside the control seat. The control block is hinged to the control seat, and the movable handle is fixedly connected to the control block. The first end of the first control arm is hinged to the control block, and the hinge point does not coincide with the rotation center of the control block itself. The second end of the first control arm is hinged to the control box. The control arm further includes a second control arm, the first end of which is hinged to the control block, and the hinge point coincides with the rotation center of the control block itself. The second end of the second control arm is provided with a control pin, and the control box is provided with a control groove. The control pin is inserted into the control groove and can slide relative to the control groove. The control slot is provided with a first control point and a second control point. A first control segment and a second control segment are connected in sequence between the first control point and the second control point. When the movable handle is pressed, the control pin moves from the first control point to the second control point, passing through the first control segment and the second control segment in sequence. The second control point is used to limit the control pin, so that the control box is locked in the corresponding position.

2. The endoscopic suture control device according to claim 1, characterized in that, The second control segment is configured as a V-shaped groove, and the second control point is located at the bottom end of the V-shaped groove.

3. The endoscopic suture control device according to claim 1, characterized in that, The control base is equipped with a box return spring, and the two ends of the box return spring are respectively connected to the control base and the control box.

4. The endoscopic suture control device according to claim 1, characterized in that, The control unit is also equipped with a wire guide assembly, which includes multiple guide wheels that are freely rotatable, and the end of the drive wire passes around the multiple guide wheels.

5. An endoscopic suture control device according to claim 4, characterized in that, The control base is also provided with a pre-tightening adjustment mechanism, which includes an adjustment block and an adjustment groove. The adjustment groove is fixedly connected to the control base, and the adjustment block is movably connected to the adjustment groove. The adjustment block has a screw hole, and a bolt is installed in the screw hole. The adjustment groove has a through hole that matches the bolt. One of the guide wheels is installed on the adjustment block.

6. The endoscopic suture control device according to claim 1, characterized in that, The connecting arm includes a first connecting arm and a second connecting arm. The main needle drive seat is provided with a connecting groove. 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 driving wire is connected to the second end of the first connecting arm.

7. An endoscopic suture control device according to claim 6, characterized in that, The main needle drive module also includes a main needle return spring, the two ends of which are respectively connected to the second end of the first connecting arm and the main needle drive seat.

8. An endoscopic suture control device according to claim 7, characterized in that, The main needle return spring is sleeved on the drive steel wire, and the direction of the tension of the drive steel wire is coaxial with the direction of the elastic force of the main needle return spring.

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