Suturing device

Abstract

A suturing device, comprising an operating component and an angle observation assembly. The angle observation assembly is arranged on the operating component. The angle observation assembly comprises a base body having a concave cavity and a dial mounted in the base body. A concave surface is formed in the concave cavity of the base body. Scale marks are arranged on the concave surface or the dial. A rotating hole is formed in the center of the dial. The angle observation assembly further comprises a first pointer, a second pointer, and a rotating shaft connecting the first pointer and the second pointer. The rotating shaft is arranged in the rotating hole and can rotate around the rotating hole. The arrangement of the angle observation assembly provides a reference when the angle of the suturing device is adjusted, so that the suturing device can be accurately adjusted to a required angle. The present invention solves the technical problem that the angle of the suturing device is difficult to determine.

Description

A suture device Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a suture device. Background Technology

[0002] The current principle of the suture device is to set a movable suture needle on the suture device. After the suture position reaches the tissue to be sutured, the suture needle is driven to pass through the tissue, and a suture thread passes through the tissue at the same time to achieve the suturing effect.

[0003] However, when using sutures to close wounds, such as suturing patent foramen ovale, atrial septal defect, and ventricular septal defect, the placement of the suture is crucial for achieving a good closure effect due to the small number of implants. This requires the suture device to be rotated to a specific angle to achieve a better suturing effect, but in practice, this angle is difficult to determine, resulting in low intraoperative efficiency.

[0004] Utility Model Content

[0005] The purpose of this invention is to provide a suture device to solve the technical problem of difficulty in determining the angle of the suture device.

[0006] To address the aforementioned problems, this utility model first provides a suture device, comprising: an operating component; and an angle observation assembly mounted on the operating component. The angle observation assembly includes a base with a cavity and a dial mounted within the base. A concave surface is formed within the cavity of the base, and scale lines are provided on the concave surface or the dial. A rotating hole is provided at the center of the dial. The angle observation assembly further includes a first pointer, a second pointer, and a rotating shaft connecting the first and second pointers. The rotating shaft is located within the rotating hole and can rotate around the rotating hole.

[0007] With this configuration, the suture includes an operating component and an angle observation component. The angle observation component includes a base and a dial, as well as a first pointer and a second pointer. This allows the angle of rotation to be determined by observing the positional relationship between the first and second pointers and the scale lines when the suture needs to be rotated. This enables the suture angle to be adjusted as needed, thereby achieving a better suturing effect.

[0008] Furthermore, the dial has scale lines, the dial is made of an opaque material, the dial has a first side facing the concave surface and a second side opposite to the first side, the second pointer is located between the concave surface and the first side, and the first pointer is located on the side of the dial facing away from the concave surface.

[0009] Furthermore, the concave surface is provided with scale lines, and the concave surface is provided with a mounting hole coaxial with the rotating hole. The dial is transparent, and the first pointer and the second pointer are located between the concave surface and the dial.

[0010] Furthermore, the angle observation component includes a connector, which is fixedly connected to the operating component. The operating component is provided with a control component. The angle observation component and the control component are located in the length extension direction of the operating component, and the angle observation component and the control component are located on the same side of the operating component.

[0011] Furthermore, the scale line is located at the 12 o'clock position of the control component, the weight of the first pointer is G1, the weight of the second pointer is G2, the distance between the center of gravity of the first pointer and the center of the rotating hole is L1, the distance between the center of the second pointer and the center of the rotating hole is L2, the angle between the first pointer and the scale line is α, the angle between the second pointer and the scale line is β, and the expression G1×L1×sinα=G2×L2×sinβ is satisfied.

[0012] Furthermore, the operating component has a housing, and a pendulum extends from one end of the second pointer away from the pivot axis, the pendulum being located within the housing.

[0013] Furthermore, the suture device also includes a puncture needle disposed within the operating component. The pendulum body is provided with a through hole and a rotating hole communicating with the through hole. The center of the rotating hole coincides with the center of the rotating shaft, and the puncture needle can pass through the through hole and the rotating hole.

[0014] Furthermore, a limiting rod is provided at the proximal end of the puncture needle, the limiting rod being clearance-fitted with the through hole and interference-fitted with the rotating hole.

[0015] Furthermore, the suture device is a patent foramen ovale suture device, the suture device includes a sheath connected to the operating component, the distal end of the sheath is provided with an opening and closing arm, the control component is used to control the opening or closing of the opening and closing arm, and the sheath is provided with an exit hole for the puncture needle to pass through.

[0016] Furthermore, the base body forms an angle γ with the axis of the operating component, where 30°≤γ≤75°. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the suture structure provided in an embodiment of the present invention (I);

[0019] Figure 2 is a schematic diagram of the suture structure provided in the embodiment of this utility model (II);

[0020] Figure 3 is a cross-sectional view along line AA in Figure 2;

[0021] Figure 4 is a schematic diagram of the angle observation component structure provided in an embodiment of this utility model (I);

[0022] Figure 5 is an exploded view of the angle observation component provided in an embodiment of this utility model;

[0023] Figure 6 is a schematic diagram of the structure of the first and second pointers provided in an embodiment of this utility model;

[0024] Figure 7 is a schematic diagram of the state of the angle observation component provided in this embodiment of the present invention (I);

[0025] Figure 8 is a schematic diagram of the state of the angle observation component provided in this embodiment of the present invention (II);

[0026] Figure 9 is a schematic diagram showing the positional relationship between the first and second pointers provided in an embodiment of this utility model;

[0027] Figure 10 is a schematic diagram of the angle observation component structure provided in the embodiment of this utility model (II);

[0028] Figure 11 is a schematic diagram of the structure of the first pointer, the second pointer, and the pendulum provided in an embodiment of the present invention;

[0029] Figure 12 is a schematic diagram of the suture structure provided in the embodiment of this utility model (III);

[0030] Figure 13 is an enlarged structural diagram of point B in Figure 12;

[0031] Figure 14 is a schematic diagram of the state of the suture provided in the embodiment of this utility model (I);

[0032] Figure 15 is a schematic diagram of the state of the suture provided in the embodiment of this utility model (II);

[0033] Figure 16 is an enlarged structural diagram of point C in Figure 15.

[0034] Explanation of reference numerals in the attached drawings: 1-Stabilizer; 10-Angle observation component; 11-Seat; 111-Concave surface; 112-Mounting hole; 12-Scale line; 13-Dial; 131-Rotating hole; 132-First surface; 133-Second surface; 14-First pointer; 15-Second pointer; 16-Rotating shaft; 17-Connector; 18-Swing body; 181-Through hole; 182-Rotating hole; 20-Operating component; 21-Housing shell; 22-Control component; 23-Driver component; 30-Punch needle; 40-Limiting rod; 50-Sheath; 51-Needle outlet; 60-Opening and closing arm. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0036] As shown in Figures 1 to 9, the suture device 1 provided in this embodiment includes an angle observation component 10 and an operating component 20. The angle observation component 10 is installed on the operating component 20, and the connection method includes welding, screwing, and plugging. No limitation is made on this connection method.

[0037] The angle observation assembly 10 includes a base 11 with a recessed inner cavity and a dial 13 installed within the base 11. The inner cavity of the base 11 has a concave surface 111, and either the concave surface 111 or the dial 13 has scale lines 12. A rotating hole 131 is opened in the center of the dial 13. The angle observation assembly 10 also includes a first pointer 14, a second pointer 15, and a rotating shaft connecting the first pointer 14 and the second pointer 15. The rotating shaft 16 is installed in the rotating hole 131 and can rotate around the rotating hole 131. The connection method between the rotating shaft 16 and the first pointer 14 and the second pointer 15 includes fusion, welding, bonding, screwing, and plugging to achieve a fixed connection of the three, or the rotating shaft 16 is integrally formed with the first pointer 14 and the second pointer 15.

[0038] Specifically, the base 11 is a disc structure with one end open. The dial 13 located in its inner cavity is coaxially arranged with the base 11, and there is a gap between the dial 13 and the concave surface 111, which can accommodate the second pointer 15. The dial 13 is located in the concave cavity of the base 11, which can protect the dial 13 from damage. The specific connection method between the dial 13 and the base 11 is not limited.

[0039] When the first pointer 14 and the second pointer 15 rotate around the axis 16, they can reach a stable equilibrium state. By rotating the operating component 20, since the dial 13 or the concave surface 111 of the base 11 has a scale line 12, when the operating component 20 is rotated, the base 11 and the dial 13 will rotate together with the operating component 20. However, the first pointer 14 and the second pointer 15 will not rotate in the stable equilibrium state, as shown in Figures 7 and 8. The scale line 12 can rotate synchronously with the operating component 20, so that the scale line 12 rotates to be on the same straight line as the first pointer 14. In this way, the rotation angle of the operating component 20 can be precisely controlled. The angle between the scale line 12 and the first pointer 14 before rotation can be set according to the requirements. By rotating the suture device 1, the scale line 12 can be made to coincide with the first pointer 14, thereby accurately determining the rotation angle of the suture device 1, improving the efficiency of intraoperative operation, and allowing the suture device 1 to rotate to a suitable angle, thereby achieving a better suturing angle and suturing effect.

[0040] In addition, the angle observation component 10 is fixedly connected to the operating component 20, so there is no need to adjust the position of the angle observation component 10 before the operation, thus avoiding errors caused by improper adjustment of the position of the angle observation component 10. Furthermore, when rotating the operating component 20, the angle observation component 10 can be used as a better reference.

[0041] The suture device 1 also includes a sheath 50 connected to the operating component 20. In this embodiment, the angle observation component 10 is installed on the operating component 20, which avoids the problem that it is difficult to judge the content displayed on the angle observation component 10 when the sheath 50 enters the patient's blood vessel, making the observation clearer, simpler and faster.

[0042] Example 1

[0043] As shown in Figures 1 to 5, in this embodiment, the scale line 12 is provided on the dial 13. The dial 13 has a first surface 132 facing the concave surface 111 and a second surface 133 opposite to the first surface 132. The scale line 12 is provided on the second surface 133.

[0044] The second pointer 15 is located between the concave surface 111 and the first surface 132, and the first pointer 14 is located on the side of the dial 13 facing away from the concave surface 111.

[0045] By making the dial 13 opaque, such as using polyethylene material, or by making the base 11 opaque, the second pointer 15 is located between the concave surface 111 and the dial 13. Since the dial 13 is opaque, the second pointer 15 cannot be observed. The first pointer 14 is located on the outside of the dial 13 and can be observed. This allows the surgeon to make judgments by only seeing the first pointer 14. The scale line 12 and the first pointer 14 can be aligned on the same line, thus avoiding seeing the second pointer 15 and preventing misjudgment by the surgeon. This makes it easier to observe and operate during the procedure.

[0046] Example 2

[0047] As shown in Figure 10, the scale line 12 is located on the concave surface 111 of the base 11, and the dial 13 is made transparent, for example, using PMMA or PC. The concave surface 111 has a mounting hole 112 coaxial with the rotating hole 131. The rotating shaft 16 is installed between the mounting hole 112 and the rotating hole 131. At this time, the first pointer 14 and the second pointer 15 are both located between the concave surface 111 and the dial 13. Since the dial 13 is transparent, the scale line 12 and the first pointer 14 can be directly observed. In order to facilitate direct identification of the first pointer 14, the first pointer 14 can be made opaque, while the second pointer 15 can be made transparent. The second pointer 15 is difficult to observe, so the first pointer 14 can be directly identified. Alternatively, the first pointer 14 and the second pointer 15 can both be made of transparent material for easy processing together. However, after processing, a layer of colored pigment can be coated on the first pointer 14, so that the first pointer 14 can be directly observed and the second pointer 15 can be avoided as interference, making it easier for the surgeon to observe.

[0048] Example 3

[0049] As shown in Figures 1 to 9, the angle observation component 10 includes a connector 17, which is fixedly connected to the operating component 20. The operating component 20 is provided with a control component 22. The angle observation component 10 and the control component 22 are located in the length extension direction of the operating component 20, and the angle observation component 10 and the control component 22 are located on the same side of the operating component 20.

[0050] The suture device 1 also includes an opening and closing arm 60 controlled by a control element 22. The opening and closing arm 60 and the control element 22 are located on the same side of the operating component 20, as shown in Figure 1. "Same side" means that the control element 22 and the opening and closing arm 60 are located on the same straight line along the length extension direction of the operating component 20, that is, the line connecting the control element 22 and the opening and closing arm 60 is parallel to the length extension direction of the operating component 20. This ensures that when the operating component 20 rotates, the opening and closing arm 60 also rotates by the same angle. Consequently, when the suture device 1 rotates by a corresponding angle, the opening and closing arm 60 rotates by the corresponding angle, allowing for precise control of the rotation angle. This enables the device to rotate to the optimal position as required, resulting in a better suture position and a better suture effect.

[0051] Example 4

[0052] Referring to Figures 6 to 8, the angle between the scale line 12 and the first pointer 14 and the second pointer 15 can be determined according to specific requirements. Specifically, the scale line 12 is located at the 12 o'clock position of the control component 22, as shown in Figures 1 and 3. This means that the scale line 12 is directly opposite the control component 22 of the operating component 20, thus determining the relative position between the scale line 12 and the control component 22. It can also be understood that when the operating component 20 is placed horizontally, the direction of the scale line 12 is vertical.

[0053] Wherein, the weight of the first pointer 14 is G1, the weight of the second pointer 15 is G2, the distance between the center of gravity of the first pointer 14 and the center of the rotating hole 131 is L1, the distance between the center of the second pointer 15 and the center of the rotating hole 131 is L2, the angle between the first pointer 14 and the scale line 12 is α, the angle between the second pointer 15 and the scale line 12 is β, and they satisfy the following relationship expression: G1×L1×sinα=G2×L2×sinβ.

[0054] Furthermore, the weight of the second pointer 15 is greater than the weight of the first pointer 14. Under the influence of gravity, regardless of how the suture device 1 rotates circumferentially, the second pointer 15 will always be located below the first pointer 14. Since the first pointer 14 and the second pointer 15 eventually reach a stable equilibrium state, then G1×L1×sinα=G2×L2×sinβ.

[0055] As shown in Figure 8, the stapler 1 is in its initial state and has not rotated. At this point, as shown in Figure 9, α is the angle between the first pointer 14 and the scale line 12, which is also the angle at which the stapler 1 should be rotated circumferentially during suturing. That is, the scale line 12 can be rotated to the position shown in Figure 8. Because the first pointer 14 and the second pointer 15 are in a state of force balance, no matter how the stapler 1 rotates, the first pointer 14 and the second pointer 15 will not rotate; only the dial 13 and the base 11 rotate with the stapler 1. α is a fixed value and can be set according to specific needs. When suturing different tissues, it will be set as needed. For example, when suturing the foramen ovale, combined with the design of other structures of the stapler 1, α can be set to any degree between 30° and 70° (including the critical value). Other data can be set accordingly based on this formula.

[0056] Specifically, when the suture 1 is suturing, in its initial state, the scale line 12 and the first pointer 14 form an angle α, as shown in Figures 1, 3, 6, and 8. When the suture 1 is not properly positioned, the scale line 1 is not aligned with the first pointer 14. When the adjustment operation component 20 is rotated counterclockwise, the base 11 and the dial 13 rotate counterclockwise with the operation component 20, while the first pointer 14 and the second pointer 15 do not rotate because they are in a balanced state. When the scale line 12 is rotated to be aligned with the first pointer 14, as shown in Figure 8, the suture 1 rotates to the target precise position, which can accurately determine the angle of rotation of the suture 1. Rotating to a specific angle allows for a better suturing position during subsequent suturing, resulting in a better suturing effect.

[0057] Example 5

[0058] As shown in Figure 11, the operating component 20 has a housing 21. A pendulum body 18 extends from one end of the second pointer 15 away from the rotating shaft 16. The pendulum body is located inside the housing 21 and can be integrally formed with the second pointer 15. The pendulum body 18 is located inside the housing 21 to avoid being touched by other components, making it more stable and safe.

[0059] Although a pendulum 18 is set on the second pointer 15, the specific usage of the first pointer 14 and the second pointer 15 is the same as described in the above embodiments. At this time, the second pointer 15 and the pendulum 18 are a whole with a corresponding center of gravity and will also form an angle β with the vertical direction. The first pointer 14 can also still form an angle α with the vertical direction, i.e. the direction of the scale line. Specifically, the operating component 20 is rotated so that the first pointer 14 coincides with the scale line 12, thereby realizing the rotation of the precision degree of the suture 1. These implementation methods are the same as those mentioned above and will not be described in detail here.

[0060] As shown in Figures 11 to 16, the suture device 1 also includes a puncture needle 30 disposed within the operating component 20. The puncture needle 30 is used to puncture and suture tissue. The pendulum body 18 has a through hole 181 and a rotating hole 182 communicating with the through hole 181. The center of the rotating hole 182 coincides with the center of the rotating shaft 16, allowing the puncture needle 30 to pass through both the through hole 181 and the rotating hole 182. The center of the rotating hole 182 coincides with the center of the rotating shaft 16, meaning the center of the arc formed by the rotating hole 182 is the center of the rotating shaft 16. When the operating component 20 rotates, the puncture needle 30 can rotate around the through hole 181 and the rotating hole 182. The puncture needle 30 is spaced apart from both the through hole 181 and the rotating hole 182, ensuring that the puncture needle 30 will not contact the walls of the through hole 181 or the rotating hole 182 during rotation, thus preventing the second pointer 15 and the pendulum body from being affected. By passing the puncture needle 30 through the through hole 181 of the swing body 18 and rotating between the through hole 181 and the rotating hole 182, the puncture needle 30 does not need to occupy additional space, which greatly improves the space utilization rate. As a result, the operating part 20 is smaller in size and lighter in weight, making the suturer 1 easier to operate and handle.

[0061] The suture device 1 provided in this embodiment is a patent foramen ovale suture device. The suture device 1 includes a sheath 50 connected to the operating component 20. The distal end of the sheath 50 is provided with an opening and closing arm 60. The control component 22 is used to control the opening or closing of the opening and closing arm 60. The sheath 50 is provided with a needle outlet hole 51 for the puncture needle 30 to pass through.

[0062] The puncture needle 30 is used to puncture tissue after passing through the needle outlet 51 of the sheath 50, thereby completing the subsequent suturing. The suture device 1 also includes a drive member 23 for driving the movement of the puncture needle 30, as shown in Figures 12 and 14. The proximal end of the puncture needle 30 is provided with a limiting rod 40, which is clearance-fitted with the through hole 181 and interference-fitted with the rotating hole 182.

[0063] Specifically, the clearance fit between the limiting rod 40 and the through hole 181 means that the limiting rod 40 can pass through the through hole 181, while the interference fit between the limiting rod 40 and the rotating hole 182 means that the limiting rod 40 cannot pass through the rotating hole 182. This ensures that the angle observation component 10 not only accurately determines the rotation angle of the operating component 20, but also prevents misoperation of the puncture needle 30.

[0064] Specifically, during operation, when the suture device 1 is not adjusted, as shown in Figures 12 to 14, the first pointer 14 does not coincide with the scale line 12, meaning the suture device 1 has not yet rotated and has not reached the required rotation position. At this time, the puncture needle 30 is inside the rotation hole 182. Since the limiting rod 40 connected to the puncture needle 30 cannot pass through the rotation hole 182, even if the driving component 23 drives the puncture needle 30 to move to the distal end, the puncture needle 30 cannot move to the distal end because the rotation hole 182 restricts the limiting rod 40 from moving to the distal end. In this way, it can be avoided that the puncture needle 30 is accidentally punctured when the operating component 20 of the suture device 1 has not yet rotated to the appropriate angle. This can prevent the puncture needle 30 from being accidentally punctured. Even if the driving component 23 is accidentally turned on, the puncture needle 30 will not move, thus achieving the effect of preventing accidental operation. When the operating component 20 rotates, the puncture needle 30 rotates together with the operating component 20, while the first pointer 14, the second pointer 15, and the pendulum 18 remain stationary in a balanced state. During the rotation, the puncture needle 30 rotates along the rotating hole 182. When the scale line 12 coincides with the first pointer 14 on a straight line, the puncture needle 30 rotates along the rotating hole 182 to the through hole 181. Please refer to Figures 14 and 15. Since the limiting rod 40 and the through hole 181 are in clearance fit, the limiting rod 40 can pass through the through hole 181. After the rotation is in place, the driving component 23 opens, and the puncture needle 30 and the limiting rod 40, driven by the driving component 23, both pass through the through hole 181 and move to the distal end. That is, after the rotation is in place, the puncture needle 30 will be pushed under the drive of the driving component 23 to puncture the tissue to be sutured and complete the subsequent suturing.

[0065] In order to ensure that the puncture needle 30 slides around the rotating hole 182 as the operating component 20 rotates, the center of the rotation arc of the puncture needle 30 is the center of the rotating shaft 16. That is, when the puncture needle 30 rotates around the rotating shaft 16, the center of the arc formed by the rotating hole 182 is also the center of the rotating shaft 16.

[0066] As shown in Figure 2, the base 11 and the axis of the operating component 20 form a certain angle γ, 30°≤γ≤80°. To facilitate the operator's observation of the dial, if the base 11 is perpendicular to the axis of the operating component 20, observation would be difficult and the view would be easily obstructed. An inclined setting is beneficial for the operator's observation. γ can be 30°, 35°, 38°, 45°, 50°, 55°, 60°, 65°, 70°, or 80°.

[0067] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0068] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suture device, characterized in that, The suture device includes: Operating components; An angle observation component is mounted on the operating component. The angle observation component includes a base with a cavity and a dial mounted in the base. A concave surface is formed in the cavity of the base. Scale lines are provided on the concave surface or the dial. A rotating hole is opened in the center of the dial. The angle observation component also includes a first pointer, a second pointer, and a rotating shaft connecting the first pointer and the second pointer. The rotating shaft is located in the rotating hole and can rotate around the rotating hole.

2. The suture device according to claim 1, characterized in that, The dial has scale lines and is made of opaque material. The dial has a first side facing the concave surface and a second side opposite to the first side. The second pointer is located between the concave surface and the first side, and the first pointer is located on the side of the dial facing away from the concave surface.

3. The suture device according to claim 1, characterized in that, The concave surface is provided with scale lines, and the concave surface is provided with a mounting hole coaxial with the rotating hole. The dial is transparent, and the first pointer and the second pointer are located between the concave surface and the dial.

4. The suture device according to any one of claims 1 to 3, characterized in that, The angle observation component includes a connector, which is fixedly connected to the operating component. The operating component is provided with a control component. The angle observation component and the control component are located in the length extension direction of the operating component and are located on the same side of the operating component.

5. The suture device according to claim 4, characterized in that, The scale line is located at the 12 o'clock position of the control component. The weight of the first pointer is G1, the weight of the second pointer is G2, the distance between the center of gravity of the first pointer and the center of the rotating hole is L1, the distance between the center of the second pointer and the center of the rotating hole is L2, the angle between the first pointer and the scale line is α, the angle between the second pointer and the scale line is β, and the expression G1×L1×sinα=G2×L2×sinβ is satisfied.

6. The suture device according to claim 4, characterized in that, The operating component has a housing, and a pendulum extends from one end of the second pointer away from the pivot axis, the pendulum being located within the housing.

7. The suture device according to claim 6, characterized in that, The suture device also includes a puncture needle disposed within the operating component. The pendulum body is provided with a through hole and a rotating hole communicating with the through hole. The center of the rotating hole coincides with the center of the rotating shaft. The puncture needle can pass through the through hole and the rotating hole.

8. The suture device according to claim 7, characterized in that, The proximal end of the puncture needle is provided with a limiting rod, which is clearance-fitted with the through hole and interference-fitted with the rotating hole.

9. The suture device according to claim 7, characterized in that, The suture device is a patent foramen ovale suture device. The suture device includes a sheath connected to the operating component. The distal end of the sheath is provided with an opening and closing arm. The control component is used to control the opening and closing of the opening and closing arm. The sheath is provided with an exit hole for the puncture needle to pass through.

10. The suture device according to claim 1, characterized in that, The base and the axis of the operating component form an angle γ, where 30°≤γ≤75°.

Images