Stitching instrument

Abstract

The utility model provides a stitching instrument which comprises an operation part and an angle observation assembly, the angle observation assembly is arranged on the operation part, the angle observation assembly comprises a base body with a concave cavity and a dial plate installed 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 plate, a rotating hole is formed in the center of the dial plate, and the rotating hole is communicated with the dial plate. The angle observation assembly further comprises a first pointer, a second pointer and a rotating shaft connecting the first pointer and the second pointer, and the rotating shaft is arranged in the rotating hole and can rotate around the rotating hole. According to the stitching instrument, by arranging the angle observation assembly, reference is provided when the angle of the stitching instrument is adjusted, the stitching instrument can be accurately adjusted to the needed angle, and the technical problem that the angle of the stitching instrument is difficult to determine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a suturing device. Background Art

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

[0003] However, when using sutures to close wounds, such as patent foramen ovale, atrial septal defect, and ventricular septal defect, the position of the suture is crucial to achieve a good closure effect because there are few implants. This requires the suture device to be rotated to a specific angle to achieve a better suturing effect. However, this angle is difficult to determine in actual operation, resulting in low intraoperative efficiency. Utility Model Content

[0004] The utility model aims to provide a stapler to solve the technical problem that it is difficult to determine the angle of the stapler.

[0005] In order to solve the above problems, the utility model first provides a suturing device, which includes: an operating part; an angle observation component installed on the operating part, the angle observation component includes a seat body with a concave cavity and a dial installed in the seat body, a concave surface is formed in the concave cavity of the seat body, 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 arranged in the rotating hole and can rotate around the rotating hole.

[0006] In this way, the stapler includes an operating component and an angle observation component, and the angle observation component includes a base and a dial, as well as a first pointer and a second pointer, so that when the stapler needs to be rotated, the rotation angle can be determined by checking the positional relationship between the first pointer and the second pointer and the scale line, so that the stapler angle can be adjusted as needed, thereby achieving a better suturing effect.

[0007] Furthermore, the dial is provided with scale lines, the material of the dial is an opaque material, the dial has a first surface facing the concave surface and a second surface opposite to the first surface, the second pointer is located between the concave surface and the first surface, and the first pointer is located on the side of the dial facing away from the concave surface.

[0008] Furthermore, the concave surface is provided with scale lines, 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.

[0009] Further, the angle observation component includes a connecting member fixedly connected to the operating member. A control member is provided on the operating member. The angle observation component and the control member are located in the length extension direction of the operating member, and the angle observation component and the control member are on the same side of the operating member.

[0010] Further, the scale line is located at the 12 o'clock direction of the control member. The gravity of the first pointer is G1, the gravity of the second pointer is G2, the distance between the center of gravity of the first pointer and the center of the rotation hole is L1, the distance between the center of the second pointer and the center of the rotation hole is L2, the included angle between the first pointer and the scale line is α, the included angle between the second pointer and the scale line is β, and the expression G1×L1×sinα = G2×L2×sinβ is satisfied.

[0011] Further, the operating member has a housing. A pendulum body is formed by extending one end of the second pointer away from the rotating shaft. The pendulum body is located inside the housing.

[0012] Further, the stapler further includes a puncture needle provided in the operating member. A through hole and a rotating hole communicating with the through hole are provided on the pendulum body. 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.

[0013] Further, a limiting rod is provided at the proximal end of the puncture needle. The limiting rod is in clearance fit with the through hole and in interference fit with the rotating hole.

[0014] Further, the stapler is a patent foramen ovale stapler. The stapler includes a sheath tube connected to the operating member. An opening and closing arm is provided at the distal end of the sheath tube. The control member is used to control the opening or closing of the opening and closing arm. A needle outlet hole for the puncture needle to pass through is provided on the sheath tube.

[0015] Further, an included angle γ is formed between the seat body and the axis of the operating member, and 30° ≤ γ ≤ 75°. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0017] Figure 1Schematic diagram (I) of the stapler structure provided by the embodiment of the present utility model;

[0018] Figure 2 Schematic diagram (II) of the stapler structure provided by the embodiment of the present utility model;

[0019] Figure 3 For Figure 2 Schematic cross-sectional view along line A-A;

[0020] Figure 4 Schematic diagram (I) of the angle observation component structure provided by the embodiment of the present utility model;

[0021] Figure 5 Exploded view of the angle observation component provided by the embodiment of the present utility model;

[0022] Figure 6 Schematic diagram of the structures of the first pointer and the second pointer provided by the embodiment of the present utility model;

[0023] Figure 7 Schematic diagram (I) of the state of the angle observation component provided by the embodiment of the present utility model;

[0024] Figure 8 Schematic diagram (II) of the state of the angle observation component provided by the embodiment of the present utility model;

[0025] Figure 9 Schematic diagram of the positional relationship between the first pointer and the second pointer provided by the embodiment of the present utility model;

[0026] Figure 10 Schematic diagram (II) of the angle observation component structure provided by the embodiment of the present utility model;

[0027] Figure 11 Schematic diagram of the structures of the first pointer, the second pointer and the pendulum body provided by the embodiment of the present utility model;

[0028] Figure 12 Schematic diagram (III) of the stapler structure provided by the embodiment of the present utility model;

[0029] Figure 13 For Figure 12 Enlarged structure diagram at B in

[0030] Figure 14 Schematic diagram (I) of the stapler state provided by the embodiment of the present utility model;

[0031] Figure 15 Schematic diagram (II) of the stapler state provided by the embodiment of the present utility model;

[0032] Figure 16 For Figure 15Schematic diagram of the enlarged structure at position C in the [Chinese context].

[0033] Explanation of reference numerals in the drawings:

[0034] 1 - Stapler;

[0035] 10 - Angle observation component; 11 - Base body; 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 - Connecting member; 18 - Swing body; 181 - Through hole; 182 - Rotating hole;

[0036] 20 - Operating component; 21 - Housing; 22 - Control member; 23 - Driving member;

[0037] 30 - Puncture needle; 40 - Limiting rod; 50 - Sheath tube; 51 - Needle outlet hole; 60 - Opening and closing arm. Detailed implementation manners

[0038] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] As Figures 1 to 9 shown, the stapler 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 methods include welding, screwing, and plugging. There is no limitation on this connection method.

[0040] The angle observation component 10 includes a base body 11 with a sunken inner cavity and a dial 13 installed in the base body 11. The inner cavity of the base body 11 has a concave surface 111, and a scale line 12 is provided on either the concave surface 111 or the dial 13. A rotating hole 131 is opened at the center of the dial 13. The angle observation component 10 further 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 methods between the rotating shaft 16 and the first pointer 14 and the second pointer 15 include fusion welding, welding, bonding, screwing, and plugging, as long as the three are fixedly connected, or the rotating shaft 16 and the first pointer 14 and the second pointer 15 are integrally formed.

[0041] Specifically, the base body 11 is a disk structure with one end open. The dial 13 and the base body 11 located in its inner cavity are coaxially arranged, and there is a gap between the dial 13 and the concave surface 111, and the gap therebetween can accommodate the second pointer 15. The dial 13 is arranged in the concave cavity of the base body 11, which can protect the dial 13 from damage, and there is no limitation on the specific connection method between the dial 13 and the base body 11.

[0042] When the first pointer 14 and the second pointer 15 rotate around the rotating shaft 16, they can reach a stable equilibrium state. By rotating the operating member 20, since there are scale lines 12 provided on the concave surface 111 of the dial 13 or the base 11, when the operating member 20 is rotated, the base 11 and the dial 13 will rotate together with the operating member 20, but the first pointer 14 and the second pointer 15 will not rotate in the stable equilibrium state. As Figure 7 and Figure 8 shown, the scale line 12 can rotate synchronously with the operating member 20, so that the scale line 12 rotates to be in the same straight line as the first pointer 14. In this way, the rotation angle of the operating member 20 can be accurately controlled. The angle between the scale line 12 and the first pointer 14 before rotation can be set according to requirements. By rotating the stapler 1, the scale line 12 can be made to coincide with the first pointer 14, thereby accurately determining the rotation angle of the stapler 1, improving the intraoperative operation efficiency, making the stapler 1 rotate to a suitable angle, and thus enabling a better suture angle and suture effect during suturing.

[0043] In addition, the angle observation assembly 10 is fixedly connected to the operating member 20, eliminating the need to adjust the position of the angle observation assembly 10 before surgery and avoiding errors caused by improper adjustment of the position of the angle observation assembly 10. Moreover, when the operating member 20 is rotated, the angle observation assembly 10 can be better used as a reference.

[0044] The stapler 1 further includes a sheath 50 connected to the operating member 20. In this embodiment, the angle observation assembly 10 is installed on the operating member 20, avoiding the problem of difficultly judging the content displayed on the angle observation assembly 10 when the sheath 50 enters the patient's blood vessel, making the observation clearer, simpler and faster.

[0045] Embodiment 1

[0046] As Figures 1 to 5 shown, 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, and the scale line 12 is provided on the second surface 133.

[0047] 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.

[0048] The dial 13 is made opaque, such as using polyethylene material, or the base body 11 is made of an opaque material. In this way, the second pointer 15 is located between the concave surface 111 and the dial 13, and the dial 13 is made of an opaque material, so that the second pointer 15 cannot be observed. The first pointer 14 is located outside the dial 13 and can be used for observation. In this way, the operator can only see the first pointer 14 for judgment, and the scale line 12 and the first pointer 14 can be made to coincide on the same line, thus avoiding seeing the second pointer 15, further avoiding misjudgment by the operator, and making it more convenient for intraoperative observation and operation.

[0049] Embodiment 2

[0050] As Figure 10 shown, the scale line 12 is provided on the concave surface 111 of the base body 11, and at the same time, the dial 13 is made transparent, such as using PMMA or PC. An installation hole 112 coaxial with the rotation hole 131 is opened on the concave surface 111, and the rotating shaft 16 is installed between the installation hole 112 and the rotation hole 131. At this time, both the first pointer 14 and the second pointer 15 are located between the concave surface 111 and the dial 13. Since the dial 13 is made transparent, the scale line 12 and the first pointer 14 can be directly observed. In order to facilitate the direct identification of the first pointer 14, the first pointer 14 can be set to be opaque, and the second pointer 15 can be set to be transparent, so that the second pointer 15 is difficult to observe. In this way, the first pointer 14 can be directly identified; or both the first pointer 14 and the second pointer 15 are made of transparent materials for convenient processing together, but after processing, a layer of colored pigment is coated on the first pointer 14, so that it is convenient to directly observe the first pointer 14, avoid interference from the second pointer 15, and facilitate the observation by the operator.

[0051] Embodiment 3

[0052] As Figures 1 to 9 shown, the angle observation assembly 10 includes a connecting member 17, and the connecting member 17 is fixedly connected to the operating member 20. A control member 22 is provided on the operating member 20. The angle observation assembly 10 and the control member 22 are located in the length extension direction of the operating member 20, and the angle observation assembly 10 and the control member 22 are located on the same side of the operating member 20.

[0053] The stapler 1 further includes an opening and closing arm 60 controlled by the control member 22 to open and close. The opening and closing arm 60 and the control member 22 are located on the same side of the operating member 20, as Figure 1As shown, the same-side finger control member 22 and the opening and closing arm 60 are located on the same straight line in the length extension direction of the operating member 20, that is, the connection line between the control member 22 and the opening and closing arm 60 is parallel to the length extension direction of the operating member 20. In this way, when the operating member 20 rotates, the opening and closing arm 60 also rotates by the same angle. Furthermore, when the stapler 1 rotates by a corresponding angle, the opening and closing arm 60 rotates by a corresponding angle, enabling precise control of the rotation angle, so that it can be rotated to a better position as required, and thus having a better suturing position and a better suturing effect subsequently.

[0054] Embodiment 4

[0055] Combined with 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 direction of the control member 22. As Figure 1 and Figure 3 shown, this means that the scale line 12 faces the control member 22 of the operating member 20, thereby determining the relative position between the scale line 12 and the control member 22. It can also be understood that when the operating member 20 is placed horizontally, the direction of the scale line 12 is the vertical direction.

[0056] Among them, the gravity of the first pointer 14 is G1, the gravity of the second pointer 15 is G2, the distance between the center of gravity of the first pointer 14 and the center of the rotation hole 131 is L1, the distance between the center of the second pointer 15 and the center of the rotation 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 relational expression is satisfied: G1×L1×sinα = G2×L2×sinβ.

[0057] In addition, the weight of the second pointer 15 is greater than the weight of the first pointer 14. Under the action of gravity, no matter how the stapler 1 rotates circumferentially, the second pointer 15 is always located below the first pointer 14. Since the first pointer 14 and the second pointer 15 are finally in a stable equilibrium state, then G1×L1×sinα = G2×L2×sinβ.

[0058] As Figure 8 shown, the stapler 1 is in the initial state and has not been rotated. At this time, as Figure 9 , α is the angle between the first pointer 14 and the scale line 12, and it is also the angle that the stapler 1 should rotate circumferentially during suturing. That is, the scale line 12 can be rotated to Figure 8That's it. Since the first pointer 14 and the second pointer 15 are in a force balance state, 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 seat body 11 rotate with the rotation of the stapler 1. α is a fixed value and can be set according to specific requirements. 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 as a whole, α can be set to any degree between 30° and 70° (including the critical value), and the remaining data can be set accordingly according to this formula.

[0059] Specifically, when the stapler 1 sutures, when the stapler 1 is in the initial state, at this time, the included angle α is formed between the scale line 12 and the first pointer 14, such as Figure 1 、 Figure 3 、 Figure 6 and Figure 8 shown; when the position of the stapler 1 is not adjusted properly, the scale line 1 does not coincide with the first pointer 14. Rotate the adjustment operating member 20 counterclockwise, and the seat body 11 and the dial 13 rotate counterclockwise with the operating member 20, while the first pointer 14 and the second pointer 15 do not rotate due to the balance state; when the scale line 12 rotates to coincide with the first pointer 14, as Figure 8 shown, at this time the stapler 1 rotates to the target precise position, and the rotation angle of the stapler 1 can be accurately determined, and it rotates to a specific angle so that a better suturing position can be reached during subsequent suturing, and a better suturing effect is achieved.

[0060] Example 5

[0061] As Figure 11 shown, the operating member 20 has a housing 21. One end of the second pointer 15 far from the rotating shaft 16 extends to form a pendulum body 18. The pendulum body is located inside the housing 21. The pendulum body 18 can be integrally formed with the second pointer 15. The pendulum body 18 being located inside the housing 21 avoids being touched by other components and is more stable and safe.

[0062] Although the pendulum body 18 is provided on the second pointer 15, the specific usage methods of the first pointer 14 and the second pointer 15 are the same as those described in the above embodiments. At this time, the second pointer 15 and the pendulum body 18 are regarded as a whole, with a corresponding center of gravity, and will also form an angle β with the vertical direction. The first pointer 14 can still form an angle α with the vertical direction, that is, the scale line direction. Specifically, rotate the operating member 20 so that the first pointer 14 coincides with the scale line 12, and the precise degree rotation of the stapler 1 is realized. These implementation methods are the same as those mentioned above and will not be elaborated one by one here.

[0063] As Figures 11 to 16As shown, the stapler 1 further includes a puncture needle 30 disposed within the operating member 20. The puncture needle 30 is used to puncture tissue and then suture the tissue. The swing body 18 is provided with 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. The puncture needle 30 can pass through 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, that is, the center of the arc formed by the rotating hole 182 is the center of the rotating shaft 16. When the operating member 20 rotates, the puncture needle 30 can rotate around the through hole 181 and the rotating hole 182. And there is a clearance between the puncture needle 30 and both the through hole 181 and the rotating hole 182. During the rotation process of the puncture needle 30, it will not touch the hole walls of the through hole 181 and the rotating hole 182, ensuring that the second pointer 15 and the swing body are not affected. By passing the puncture needle 30 through the through hole 181 of the swing body 18 and allowing it to rotate between the through hole 181 and the rotating hole 182, the puncture needle 30 does not need to occupy extra space, greatly improving the space utilization rate. As a result, the volume of the operating member 20 is smaller and the weight is correspondingly reduced, making the entire stapler 1 easier to operate and hold.

[0064] The stapler 1 provided in this embodiment is a patent foramen ovale stapler. The stapler 1 includes a sheath 50 connected to the operating member 20. The distal end of the sheath 50 is provided with an opening and closing arm 60. The control member 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.

[0065] The puncture needle 30 is used to puncture tissue after passing through the needle outlet hole 51 of the sheath 50, and then complete subsequent suturing. The stapler 1 further includes a driving member 23 for driving the puncture needle 30 to move, such as Figure 12 and Figure 14 , a limiting rod 40 is provided at the proximal end of the puncture needle 30. The limiting rod 40 has a clearance fit with the through hole 181 and an interference fit with the rotating hole 182.

[0066] 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, and 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. In this way, the angle observation assembly 10 not only has the function of accurately determining the rotation angle of the operating member 20, but also has the function of preventing misoperation of the puncture needle 30.

[0067] Specifically during the operation process, when the stapler 1 is not adjusted, such as Figures 12 to 14, at this time, the first pointer 14 does not coincide with the scale line 12. That is, when the stapler 1 has not rotated yet, that is, it has not reached the required rotation position. At this time, the puncture needle 30 is located within the rotation hole 182. Since the limit rod 40 connected to the puncture needle 30 cannot pass through the rotation hole 182, even when the driving member 23 drives the puncture needle 30 to move distally, due to the rotation hole 182 restricting the limit rod 40 from moving distally, the puncture needle 30 cannot move distally either. In this way, it can be avoided that when the operating member 20 of the stapler 1 has not rotated to the appropriate angle, the puncture needle 30 is accidentally punctured by misoperation. Thus, the misoperation of the puncture needle 30 can be avoided. Even if the driving member 23 is accidentally activated, the puncture needle 30 will not move, achieving the preventive effect of misoperation. When the operating member 20 rotates, the puncture needle 30 rotates together with the operating member 20, while the first pointer 14, the second pointer 15, and the pendulum body 18 remain stationary in the balanced state. During the rotation process, the puncture needle 30 rotates along the rotation hole 182. When it rotates until the scale line 12 coincides with the first pointer 14 in a straight line, at this time, the puncture needle 30 rotates along the rotation hole 182 to the through hole 181. Please refer to Figure 14 and Figure 15 . Since the limit rod 40 and the through hole 181 have a clearance fit, the limit rod 40 can pass through the through hole 181. At this time, after the rotation is in place and the driving member 23 is opened, the puncture needle 30 and the limit rod 40 are driven by the driving member 23, and both the puncture needle 30 and the limit rod 40 pass through the through hole 181 and then move distally. That is, after the rotation is in place, the puncture needle 30 will be pushed under the drive of the driving member 23, and then puncture the tissue to be sutured, and then complete the subsequent suture.

[0068] To ensure that the puncture needle 30 slides around the rotation hole 182 as the operating member 20 rotates, the center of the rotation arc of the puncture needle 30 is the center of the rotating shaft 16. That is, the puncture needle 30 rotates around the rotating shaft 16, and the center of the arc formed by the rotation hole 182 is also the center of the rotating shaft 16.

[0069] As Figure 2 shown, the seat body 11 forms a certain angle γ with the axis of the operating member 20, where 30° ≤ γ ≤ 80°. To facilitate the surgeon to observe the dial, it is difficult to observe when the seat body 11 is perpendicular to the axis of the operating member 20, and the line of sight is easily blocked. An inclined setting is beneficial for the surgeon to observe. Among them, γ can be 30°, 35°, 38°, 45°, 50°, 55°, 60°, 65°, 70°, 80°.

[0070] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

[0071] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stapler, characterized in that, The stapler includes: An operating component; An angle observation assembly mounted on the operating component. The angle observation assembly includes a seat body having a concave cavity and a dial mounted in the seat body. A concave surface is formed in the concave cavity of the seat body. Scale lines are provided on the concave surface or the dial. A rotation hole is formed 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 pointer and the second pointer. The rotating shaft is disposed in the rotation hole and can rotate around the rotation hole.

2. The stapler according to claim 1, wherein, Scale lines are provided on the dial. The material of the dial is an opaque material. The dial has a first surface facing the concave surface and a second surface opposite to the first surface. The second pointer is located between the concave surface and the first surface. The first pointer is located on the side of the dial facing away from the concave surface.

3. The stapler according to claim 1, wherein, Scale lines are provided on the concave surface. A mounting hole coaxial with the rotation hole is formed on the concave surface. The dial is transparent. The first pointer and the second pointer are located between the concave surface and the dial.

4. The stapler according to any one of claims 1 to 3, characterized in that The angle observation assembly includes a connecting member fixedly connected to the operating component. A control member is provided on the operating component. The angle observation assembly and the control member are located in the length extension direction of the operating component, and the angle observation assembly and the control member are located on the same side of the operating component.

5. The stapler according to claim 4, characterized in that, The scale line is located at the 12 o'clock direction of the control member. The gravity of the first pointer is G1, the gravity of the second pointer is G2. The distance between the center of gravity of the first pointer and the center of the rotation hole is L1, and the distance between the center of the second pointer and the center of the rotation hole is L2. The angle between the first pointer and the scale line is α, and 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 stapler according to claim 4, characterized in that, The operating component has a housing. A pendulum body is formed by extending the end of the second pointer away from the rotating shaft. The pendulum body is located inside the housing.

7. The stapler according to claim 6, wherein The stapler further includes a puncture needle disposed inside the operating component. A through hole and a rotation hole communicating with the through hole are provided on the pendulum body. The center of the rotation hole coincides with the center of the rotating shaft. The puncture needle can pass through the through hole and the rotation hole.

8. The stapler according to claim 7, characterized in that, A limiting rod is provided at the proximal end of the puncture needle. The limiting rod is in clearance fit with the through hole and in interference fit with the rotation hole.

9. The stapler according to claim 7, wherein, The stapler is a patent foramen ovale stapler. The stapler includes a sheath tube connected to the operating component. An opening and closing arm is provided at the distal end of the sheath tube. The control member is used to control the opening or closing of the opening and closing arm. An needle outlet hole for the puncture needle to pass through is provided on the sheath tube.

10. The stapler according to claim 1, characterized in that, An angle γ is formed between the axis of the seat body and the axis of the operating component, and 30° ≤ γ ≤ 75°.

Images