A sewing device

Abstract

A sewing device characterized in that the sewing device comprises: a control component; an angle observation device attached to the actuating component, wherein the angle observation device comprises a base body with a recessed cavity and a scale provided in the base body, wherein the recessed cavity of the base body forms a concave surface and the concave surface or the scale is provided with scale marks and a rotary bore is formed in the center of the scale, wherein the angle observation device further comprises a first pointer, a second pointer and a rotating shaft connecting the first and the second pointer, wherein the rotary shaft is positioned inside the rotary bore and can rotate around the rotary bore.

Description

Technical field

[0001] The present utility model relates to the field of medical technology, in particular a suturing device. background

[0002] Current sewing devices operate on the principle of a movable sewing needle. When the sewing position reaches the fabric to be sewn, the needle is driven to pierce the fabric, simultaneously pulling a sewing thread through to create the closure.

[0003] When using suture material to close wounds such as patent foramen ovale, atrial septal defects, or ventricular septal defects, precise suture placement is essential for optimal closure due to the minimal implantable material. This requires rotating the suture device at a specific angle to achieve an effective suture. In practice, determining this angle proves difficult, which negatively impacts the efficiency of the surgery. Content of the utility model

[0004] The present utility model aims to provide a seaming device that solves the technical difficulty of determining the angle of the seaming device.

[0005] To solve the aforementioned problems, this utility model first provides a sewing device comprising: an operating component; an angle-viewing device mounted on the operating component, wherein the angle-viewing device comprises a base body with a recessed area and a scale provided in the base body, the recessed area of ​​the base body forming a concave surface, and the concave surface or the scale being provided with scale markings, with a rotatable opening formed in the center of the scale; the angle-viewing device further comprising a first pointer, a second pointer, and a rotating shaft connecting the first and second pointers. The rotating shaft is positioned within the rotating opening and can rotate about the rotating opening.

[0006] In this configuration, the suturing device comprises an operating component and an angle observation device. The angle observation device includes a base, a scale, a first pointer, and a second pointer. If rotation of the suturing device is required, the angle of rotation can be determined by observing the positional relationship between the first and second pointers and the scale lines. This allows for precise adjustment of the suturing device's angle, resulting in improved suturing outcomes.

[0007] Furthermore, the scale features graduated lines and is made of an opaque material. The scale has a first surface facing the concave surface and a second surface opposite the first. The second pointer is positioned between the concave surface and the first surface, while the first pointer is located on the side of the scale facing away from the concave surface.

[0008] Furthermore, the concave surface features scale lines and a mounting hole arranged coaxially with the rotary bore. The scale is transparent, with the first and second pointers positioned between the concave surface and the scale.

[0009] Furthermore, the angle monitoring device includes a connecting element that is rigidly connected to the actuating component. The actuating component has a control element, with the angle monitoring device and the control element being positioned along the longitudinal extent of the actuating component and located on the same side of it.

[0010] Furthermore, the scale lines are positioned at the 12 o'clock position of the control element. The gravity of the first pointer is designated G1 and that of the second pointer 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 equation G1 · L1 · sinα = G2 · L2 · sinβ is satisfied.

[0011] Furthermore, the actuating component includes a housing, with the end of the second pointer furthest from the rotating shaft extending to a pendulum body positioned inside the housing.

[0012] Furthermore, the suturing device comprises a puncture needle arranged within the operating component, wherein the pendulum body is provided with a through hole and a pivot hole connected to the through hole, wherein the center of the pivot hole coincides with the center of the pivot shaft and the puncture needle can be passed through the through hole and the pivot hole.

[0013] In addition, the proximal end of the puncture needle is provided with a limiting rod that fits loosely into the through hole and press-fit into the rotary hole.

[0014] Furthermore, the suturing device is designed for oval foramina that cannot be closed. The device comprises a sheath tube connected to the operating component. The distal end of the sheath tube is equipped with an opening / closing arm. The control element is used to operate the opening or closing of the opening / closing arm. The sheath tube has a needle exit opening for the passage of the puncture needle.

[0015] Furthermore, the base body forms an angle γ with the axis of the operating component, where 30° ≤ γ ≤ 75°. Description of the drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the drawings necessary for describing the embodiments or the prior art are briefly presented below. It is obvious that the drawings described below merely represent embodiments of the present utility model. Experts in this field can create further drawings based on the provided drawings without any creative effort. Fig. is a schematic diagram of the seam device structure (I) provided by an embodiment of the present utility model; Fig. is a schematic representation of the seam device structure (II) provided by an embodiment of the present utility model; Fig. is a schematic cross-sectional representation of Fig. along line AA. Fig. is a schematic representation of the angle observation assembly structure provided by an embodiment of the present utility model (Part 1); Fig. is an exploded view of the angle observation assembly provided by an embodiment of the present utility model; Fig. is a schematic representation of the structure of the first pointer and the second pointer provided by an embodiment of the present utility model; Figure 7 is a schematic representation (I) of the state of the angle observation assembly provided by an embodiment of the present utility model; Fig. is a schematic diagram of the state of the angle observation device provided by an embodiment of the present utility model (II); Fig. illustrates the positional relationship between the first pointer and the second pointer in an embodiment of the present utility model; Fig. : Schematic representation of the structure of the angle observation device provided by an embodiment of the present utility model (II); Fig. is a schematic diagram of the structure of the first pointer, the second pointer and the pendulum provided by an embodiment of the present utility model; Fig. Figure 1 is a schematic diagram of the structure of the seaming device (III) provided by an embodiment of the present utility model. Fig. is an enlarged schematic representation of the structure at position B in Fig. . Figure 14 is a schematic representation of the state (I) of the sewing device provided by an embodiment of the present utility model. Fig. is a schematic representation of the state (II) of the seaming device provided by an embodiment of the present utility model. Fig. is an enlarged schematic representation of the structure at position C in Fig. . Reference symbol list:

[0017] 1 - Sewing device; 10 - Angle observation device; 11 - Base body; 111 - Concave surface; 112 - Mounting hole; 12 - Scale line; 13 - Dial; 131 - Rotary bore; 132 - First surface; 133 - Second surface; 14 - First pointer; 15 - Second pointer; 16 - Rotating shaft; 17 - Connecting element; 18 - Pendulum bob; 181 - Through hole; 182 - Rotary hole; 20 - Operating element; 21 - Housing; 22 - Control element; 23 - Drive element; 30 - Puncture needle; 40 - Limiting rod; 50 - Sleeve tube; 51 - Needle exit hole; 60 - Opening / closing arm. Specific embodiment

[0018] To clarify and explain the aforementioned objectives, features, and advantages of the present utility model, detailed descriptions of specific embodiments are given below with reference to the accompanying drawings. It is understood that the specific embodiments described here serve only to illustrate the present utility model and are not intended to limit its scope.

[0019] As in the Fig. As shown in Figures 1 to 9, the seaming device 1 provided in this embodiment comprises an angle observation assembly 10 and an operating component 20. The angle observation assembly 10 is mounted on the operating component 20, the connection methods including welding, screw fastening or plug connection, without being limited to any one particular connection method.

[0020] The angle observation assembly 10 comprises a housing body 11 with a recessed inner cavity and a scale 13 mounted within the housing body 11. The inner cavity of the housing body 11 has a concave surface 111. Either the concave surface 111 or the scale 13 bears graduation lines 12. A rotary bore 131 is formed in the center of the scale 13. The angle observation device 10 further comprises 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 mounted in the rotary bore 131 and can rotate about the rotary bore 131.The connection method between the rotating shaft 16 and the first pointer 14 and the second pointer 15 can include a fusion connection, a welded connection, an adhesive connection, a screw connection or a plug connection, provided that a firm connection is made between the three elements; alternatively, the rotating shaft 16 can be formed integrally with the first pointer 14 and the second pointer 15.

[0021] In particular, the housing body 11 has an open disc structure. The scale 13, arranged in its cavity, is coaxial with the housing body 11, leaving a gap between the scale 13 and the concave surface 111. This gap accommodates the second hand 15. The dial 13 is housed in the recessed area of ​​the base body 11 and is thus protected from damage. The specific connection method between the dial 13 and the base body 11 is not restricted.

[0022] The first pointer 14 and the second pointer 15 rotate around the axis 16 to reach a stable equilibrium. When the actuating component 20 is rotated, the base body 11 and the scale 13 rotate together with the actuating component 20 due to the scale lines 12 on the scale 13 or the concave surface 111 of the base body 11. However, the first pointer 14 and the second pointer 15 do not rotate as long as they are in stable equilibrium. As shown in the Fig. As shown, the scale lines 12 rotate synchronously with the control component 20, aligning them on the same line as the first pointer 14. This allows for precise control of the rotation angle of the control component 20. The initial angle between the scale line 12 and the first pointer 14 can be preset as needed. By rotating the suture device 1, the scale line 12 can be aligned with the first pointer 14, thus precisely determining the rotation angle of the suture device 1. This improves intraoperative efficiency by positioning the suture device 1 at an optimal angle, ultimately leading to superior suture angles and outcomes.

[0023] Furthermore, the angle observation device 10 is fixedly connected to the operating component 20, thus eliminating the need for preoperative adjustment of the angle observation device 10's position. This prevents errors due to improper positioning of the angle observation device 10. Additionally, the angle observation device 10 serves as a more reliable reference when rotating the operating component 20.

[0024] The suturing device 1 further comprises a sheath tube 50 connected to the operating component 20. In this embodiment, the angle observation component 10 is attached to the operating component 20, thereby preventing difficulties in recognizing the information displayed on the angle observation component 10 when the sheath tube 50 is inserted into the patient's blood vessel. This enables clearer, simpler, and faster observation. Example 1

[0025] As in the Fig. As shown in Figures 1 to 5, the scale lines 12 of this embodiment are positioned on the dial 13. The dial 13 has a first surface 132 facing the concave surface 111 and a second surface 133 opposite the first surface 132, with the scale lines 12 arranged on the second surface 133.

[0026] The second pointer 15 is positioned between the concave surface 111 and the first surface 132, while the first pointer 14 is located on the side of the dial 13 facing away from the concave surface 111. This can be achieved, for example, by making the scale 13 opaque, for example, from polyethylene, or by making the base body 11 from an opaque material, in which case the second pointer 15 is positioned between the concave surface 111 and the scale 13. Due to the opacity of the scale 13, the second pointer 15 is not visible, while the first pointer 14, located on the outside of the scale 13, remains visible. This arrangement allows the surgeon to rely solely on the first pointer 14 for assessment and to align the scale line 12 precisely with the first pointer 14.This prevents the second pointer 15 from being visible and avoids misjudgments by the surgeon, thus facilitating intraoperative observation and operation. Example 2

[0027] As in Fig. As shown, the scale line 12 is positioned on the concave surface 111 of the base body 11, while the scale 13 is made of, for example, transparent PMMA or PC. An installation hole 112 is formed on the concave surface 111, coaxial with the pivot hole 131. The pivot shaft 16 is located between the installation hole 112 and the pivot hole 131. At this point, both the first pointer 14 and the second pointer 15 are positioned between the concave surface 111 and the scale 13. Since the scale 13 is transparent, the scale lines 12 and the first pointer 14 can be directly observed. To facilitate the direct identification of the first pointer 14, it can be made opaque, while the second pointer 15 is transparent. The second pointer 15 is then difficult to see, thus allowing the first pointer 14 to be directly identified.Alternatively, both the first pointer 14 and the second pointer 15 can be made of transparent material to facilitate simultaneous processing. After processing, a layer of colored pigment is applied to the first pointer 14. This facilitates direct observation of the first pointer 14, minimizes interference from the second pointer 15, and supports the surgeon's visual assessment. Example 3

[0028] As in the Fig. As shown in Figures 1 to 9, the angle observation device 10 comprises a connecting element 17 that is rigidly connected to the operating component 20. The operating component 20 has a control element 22, wherein the angle observation device 10 and the control element 22 are positioned along the longitudinal extent of the operating component 20 and are located on the same side thereof.

[0029] The sewing device 1 further comprises an opening / closing arm 60, which is controlled by the control element 22. The opening / closing arm 60 and the control element 22 are located on the same side of the operating component 20, as shown in Fig. This means that the control element 22 and the opening / closing arm 60 lie on the same straight line along the longitudinal direction of extension of the actuating component 20; that is, the line connecting the control element 22 and the opening / closing arm 60 is parallel to the longitudinal direction of extension of the actuating component 20. This arrangement ensures that the opening / closing arm 60 rotates by the same angle when the actuating component 20 rotates. Consequently, when the sewing device 1 rotates by a corresponding angle, the opening / closing arm 60 rotates by the same angle. This allows for precise control of the rotation angle, enabling rotation into an optimal position as needed. This, in turn, facilitates a favorable subsequent seam position and leads to excellent seam results. Example 4

[0030] With reference to the Fig. 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 the specific requirements. In particular, the scale line 12 is positioned relative to the control element 22 in the 12 o'clock position, as shown in the Fig. 1 and Fig. Figure 3 shows that the scale line 12 faces the control element 22 of the actuating component 20, thus defining the relative position between the scale line 12 and the control element 22. It is also understood that the direction of the scale line 12 is vertical when the actuating component 20 is arranged horizontally.

[0031] Here, the gravitational force acting on the first pointer 14 is denoted as G1 and that on the second pointer 15 as 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 the following relationship holds: G1 × L1 × sinα = G2 × L2 × sinβ.

[0032] Furthermore, the weight of the second pointer 15 exceeds that of the first pointer 14. Under the force of gravity, the second pointer 15 remains positioned below the first pointer 14, regardless of the circumferential rotation of the sewing device 1. When the first pointer 14 and the second pointer 15 finally reach a stable equilibrium, G1 × L1 × sinα = G2 × L2 × sinβ.

[0033] As in Fig. As shown, the sewing device 1 is in its initial state without rotation. At this point, as shown in Fig. It is shown that “α”. This represents the angle between the first pointer 14 and the scale line 12, which is also the angle setting required during sewing. That is, the scale line 12 can be set to the Fig. The position shown can be rotated. Since the first pointer 14 and the second pointer 15 are in force equilibrium, neither pointer rotates, regardless of how the suture device 1 rotates. Only the scale 13 and the base body 11 rotate with the suture device 1. The angle α () is a fixed value that can be adjusted according to specific requirements. When suturing different fabrics, α is adjusted as needed. For example, when suturing the foramen ovale, and in conjunction with the overall design of the suture device 1, α can be set to any angle between 30° and 70° (including critical values). The remaining parameters can be set according to this formula.

[0034] In particular, when the sewing device 1 is sewing, the angle α between the scale line 12 and the first pointer 14 is formed in its initial state, as shown in the Fig. As shown. If the suturing device 1 is not positioned correctly, the scale line 12 does not align with the first pointer 14. By rotating the operating component 20 counterclockwise, the base body 11 and the scale 13 rotate counterclockwise with it, while the first pointer 14 and the second pointer 15 remain stationary due to their balanced state. Once the scale line 12 rotates so that it aligns with the first pointer 14, as shown. Fig. As shown, the sewing device 1 is rotated into the desired precision position. This precisely determines the rotation angle of the sewing device 1. By rotating it to a specific angle, the sewing device can achieve an optimal seam position during subsequent sewing, resulting in excellent seam results. Example 5

[0035] As in Fig. As shown, the operating component 20 comprises a housing 21. The end of the second pointer 15 furthest from the pivot 16 extends to a pendulum bob 18. This pendulum bob is housed in the housing 21. The pendulum bob 18 can be formed integrally with the second pointer 15. Its arrangement in the housing 21 prevents contact with other components and increases stability and safety.

[0036] Although an oscillating body 18 is attached to the second pointer 15, the specific use of the first pointer 14 and the second pointer 15 remains identical to that described in the preceding embodiments. In this case, the second pointer 15 and the oscillating body 18 function as a unit, possessing a corresponding center of gravity and forming an angle β with the vertical direction. The first pointer 14 can still form an angle α with the vertical direction, i.e., with the direction of the scale lines. In particular, rotating the actuating component 20 aligns the first pointer 14 with the scale line 12, thereby achieving precise rotational positioning of the sewing device 1. These embodiments are identical to those mentioned above and are not described in detail here.

[0037] As in the Fig. As shown in Figures 11 to 16, the suturing device 1 further comprises a puncture needle 30, which is housed in the actuating component 20. This puncture needle 30 is used to puncture tissue for subsequent suturing. The pendulum body 18 has a through-hole 181 and a pivot hole 182, which is connected to the through-hole 181. The center point of the pivot hole 182 coincides with the center point of the pivot shaft 16, so that the puncture needle 30 can be passed through both the through-hole 181 and the pivot hole 182. The center point of the pivot hole 182 is aligned with the center point of the pivot shaft 16, meaning that the center point of the arc formed by the pivot hole 182 coincides with the center point of the pivot shaft 16. When the actuating component 20 rotates, the puncture needle 30 can rotate around both the through hole 181 and the pivot hole 182.The puncture needle 30 is spaced apart from both the through-hole 181 and the pivot hole 182. During rotation, the puncture needle 30 does not touch the walls of either the through-hole 181 or the pivot hole 182, thus ensuring that the second pointer 15 and the pendulum body are not affected. By guiding the puncture needle 30 through the through-hole 181 of the pivot body 18 and allowing rotation between the through-hole 181 and the pivot hole 182, the puncture needle 30 does not occupy any additional space. This significantly improves space efficiency and consequently reduces the volume and weight of the operating component 20. As a result, the suturing device 1 is easier to operate and handle overall.

[0038] The suture device 1 presented in this embodiment is a device for closing an open foramen ovale. The suture device 1 comprises a sheath tube 50 connected to the operating component 20. The distal end of the sheath tube 50 is equipped with an opening / closing arm 60. The control component 22 serves to control the opening or closing of the opening / closing arm 60. The sheath tube 50 is provided with a needle exit opening 51 from which the puncture needle 30 emerges. The puncture needle 30 is designed to exit the needle exit opening 51 in the sheath tube 50 to puncture tissue and thereby enable subsequent suturing. The suture device 1 further comprises a drive element 23 for actuating the movement of the puncture needle 30. As described in the Fig. 12 and Fig. As shown in Figure 14, the proximal end of the puncture needle 30 has a stop rod 40. The stop rod 40 is arranged in a clearance fit with the through hole 181 and in an interference fit with the rotary hole 182.

[0039] In particular, the free-running fit between the stop pin 40 and the through-hole 181 allows the stop pin 40 to pass through the through-hole 181, while the interference fit between the stop pin 40 and the pivot hole 182 prevents the stop pin 40 from passing through the pivot hole 182. This arrangement enables the angle monitoring device 10 not only to accurately determine the rotation angle of the operating component 20, but also to prevent incorrect actuation of the puncture needle 30.

[0040] During operation, if the stapler 1 is not set (as described in the Fig. (as shown in Figures 12 to 14), the first pointer 14 is not aligned with the scale line 12. This indicates that the stapling device 1 has not yet been rotated into the required position. At this stage, the puncture needle 30 is located within the rotating opening 182. The stop bar 40 connected to the puncture needle 30 cannot pass through the rotating opening 182. Therefore, even if the drive element 23 causes the puncture needle 30 to move distally, the rotating opening 182 prevents distal movement of the stop bar 40. Thus, the puncture needle 30 cannot be advanced distally. This prevents accidental puncture by the needle 30 if the operating component 20 of the suturing device 1 has not yet been rotated to the appropriate angle. Even if the drive element 23 is accidentally activated, the needle 30 will not move, thus preventing incorrect operation.When the actuating component 20 is rotated, the puncture needle 30 rotates with it. The first pointer 14, the second pointer 15, and the pivoting body 18 remain stationary in a balanced state. During rotation, the puncture needle 30 rotates along the rotary bore 182. As the rotation continues until the scale line 12 is aligned in a straight line with the first pointer 14, the puncture needle 30 then rotates along the rotary bore 182 to the through bore 181. See . Fig. Since the stopper rod 40 and the through-hole 181 have a play fit, the stopper rod 40 can pass through the through-hole 181. Upon reaching this rotational position, both the puncture needle 30 and the stopper rod 40, driven by the drive element 23, pass through the through-hole 181 and move distally. That is, only after reaching the rotational position is the puncture needle 30 pushed through the drive element 23 to puncture the tissue to be sutured and thus complete the subsequent suture. To ensure that the puncture needle 30 slides around the rotating opening 182 when the actuating component 20 rotates, the center point of the puncture needle's arc of rotation is aligned with the center point of the rotating shaft 16. Thus, the puncture needle 30 rotates around the rotating shaft 16, with the center point of the arc formed by the rotating opening 182 also coinciding with the center point of the rotating shaft 16.

[0041] As in Fig. As shown, the base body 11 forms an angle γ with the axis of the operating component 20, where 30° ≤ γ ≤ 80°. To facilitate the surgeon's observation of the scale, a vertical orientation of the base body 11 relative to the axis of the operating component 20 would be difficult to view, as it would obstruct the line of sight. An inclined configuration therefore facilitates observation by the surgeon. The angle γ can be 30°, 35°, 38°, 45°, 50°, 55°, 60°, 65°, 70°, or 80°.

[0042] Although the present utility model has been disclosed as described above, it is not limited thereto. Any person skilled in the art can make various changes and modifications without deviating from the spirit and scope of the present utility model. Therefore, the scope of protection of the present utility model is determined by the scope defined in the claims.

[0043] Finally, it should be noted that relational terms such as "first" and "second" are used here merely to distinguish one entity or process from another, without necessarily requiring or implying any actual relationship or sequence between these entities or processes. Furthermore, the terms "comprehensive," "inclusive," or other variations thereof are intended to encompass non-exclusive inclusion. Thus, a procedure, method, object, or device comprising a list of elements includes not only those elements but also other elements not expressly listed or elements inherent in such a procedure, method, object, or device. Without further limitation, an element encompassed by the expression "comprehensive" includes...“defined does not exclude the presence of additional identical elements in the process, method, object or apparatus comprising that element.

[0044] The embodiments described here are presented in a progressive manner, with each embodiment highlighting its differences from others; identical or similar features between the embodiments should be cross-referenced.

[0045] The foregoing description of the disclosed embodiments enables a person skilled in the art to realize or use the present utility model. Numerous modifications of these embodiments will be obvious to a person skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Accordingly, the present utility model is not limited to the embodiments described herein, but encompasses the broadest scope compatible with the principles and novel features disclosed herein.

Claims

[1] A sewing device, characterized by , that the sewing device includes: a control component; an angle observation device attached to the actuating component, wherein the angle observation device comprises a base body with a recessed cavity and a scale provided in the base body, wherein the recessed cavity of the base body forms a concave surface and the concave surface or the scale is provided with scale marks and a rotary bore is formed in the center of the scale, wherein the angle observation device further comprises a first pointer, a second pointer and a rotating shaft connecting the first and the second pointer, wherein the rotary shaft is positioned inside the rotary bore and can rotate around the rotary bore. [2] The sewing device according to claim 1, characterized bythat the scale is provided with graduation lines; the scale is made of an opaque material; the scale has a first surface facing the concave surface and a second surface opposite the first surface; the second pointer is positioned between the concave surface and the first surface; and the first pointer is arranged on the side of the scale facing away from the concave surface. [3] The sewing device according to claim 1, characterized by that the concave surface is provided with scale lines, the concave surface is formed with a mounting hole that is coaxial to the pivot hole, the scale is formed transparently, and the first pointer and the second pointer are positioned between the concave surface and the scale. [4] Sewing device according to one of claims 1 to 3, characterized bythat the angle observation arrangement comprises a connecting element that is rigidly connected to the actuating component, wherein the actuating component is provided with a control element and the angle observation arrangement and the control element are positioned along the longitudinal extension direction of the actuating component, with both components being located on the same side of the actuating component. [5] The sewing device according to claim 4, characterized by, that the scale line is positioned in the 12 o'clock position of the control element, the gravity of the first pointer is G1, the gravity of the second pointer is G2, where the distance between the center of mass 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 equation G1 · L1 · sinα = G2 · L2 · sinβ is satisfied. [6] The sewing device according to claim 4, characterized by , that the actuating component comprises a housing, wherein the end of the second pointer furthest from the rotating shaft extends to a pendulum body located inside the housing. [7] The sewing device according to claim 6, characterized by, that the suturing device further comprises a puncture needle arranged within the actuating component, wherein the pendulum body is provided with a through hole and a pivot hole connected to the through hole, wherein the center of the pivot hole coincides with the center of the pivot shaft and the puncture needle can be passed through the through hole and the pivot hole. [8] The sewing device according to claim 7, characterized by , that the proximal end of the puncture needle is provided with a limiting rod that fits loosely into the through hole and is interference-fitted with the rotary hole. [9] Sewing device according to claim 7, characterized bythat the suture device is a suture device for oval non-closure foramina comprising a sheath tube connected to the operating component, wherein the distal end of the sheath tube is provided with an opening / closing arm, wherein the control element is used to control the opening or closing of the opening / closing arm, and the sheath tube is provided with a needle exit hole for the passage of the puncture needle. [10] The sewing device according to claim 1, characterized by , that the base body forms an angle γ with the axis of the operating component, where 30° ≤ γ ≤ 75°.

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