Split type ligature clip

Abstract

The utility model provides a split type ligation clamp which aims at solving the technical problems that an existing integrated ligation clamp is unstable in closing force, prone to fatigue and limited in material function. The ligature clip comprises a first clip arm and a second clip arm, wherein a connecting column is arranged at the near end of the first clip arm; the near end of the second clamping arm is provided with a connecting groove matched with the connecting column. Wherein the connecting column is rotatably assembled in the connecting groove, so that the first clamping arm and the second clamping arm form a movable connecting structure which can be opened and closed relatively. By means of the split type structural design, the first clamping arm and the second clamping arm of the ligation clamp are arranged to be mutually independent parts and can be machined and formed respectively, closing force can be controlled within a certain range, deviation of the rotating angle is reduced, it is guaranteed that tissue is clamped firmly and reliably in an operation, the fatigue life of the ligation clamp is effectively prolonged, and meanwhile the ligation clamp is convenient to use. All parts are allowed to be made of the most appropriate materials, and durability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a split-type ligation clip. Background Technology

[0002] Ligation clips are commonly used medical instruments in surgical procedures. Due to their small size and lightweight nature, they do not easily obstruct the surgical field after ligation and are less likely to cause tissue damage due to manipulation, making them widely used in surgery. Currently, most ligation clips on the market adopt a one-piece structure, with two clip arms molded together in a single injection molding process. While this one-piece structure is simple to manufacture, it has the following drawbacks: 1. Due to material limitations, repeated opening and closing can easily lead to insufficient closing force and instability, and fatigue fracture may also occur, resulting in a limited service life; 2. The one-piece design makes it difficult to optimize materials for the functional requirements of different parts of the clip arms. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a split ligation clip, which solves the technical problems of unstable closing force, easy fatigue and limited material function of the existing integrated ligation clip.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A split-type ligation clip includes a first clamping arm and a second clamping arm. The first clamping arm has a connecting post at its proximal end, and the second clamping arm has a connecting groove at its proximal end that is adapted to the connecting post. The connecting post is rotatably mounted in the connecting groove, so that the first clamping arm and the second clamping arm form a movable connection structure that can be opened and closed relative to each other.

[0006] This invention utilizes a split-structure design, making the first and second clamping arms of the ligation clip independent components that can be manufactured separately. By precisely controlling the fitting clearance between the connecting post diameter and the connecting groove, the closing force can be controlled within a certain range, reducing deviations in the rotation angle and ensuring a firm and reliable clamping of tissues during surgery. Furthermore, this structure can withstand numerous opening and closing cycles, significantly extending its fatigue life compared to traditional one-piece structures. Additionally, only individual components need to be replaced after damage, reducing maintenance costs. The split-structure design allows for the selection of the most suitable materials for each component, ensuring durability.

[0007] Optionally, the proximal end of the first clamping arm is provided with an arc-shaped protrusion; the connecting post is disposed on the arc-shaped protrusion, and both ends of the connecting post protrude along the width direction of the first clamping arm; the proximal end of the second clamping arm is provided with an arc-shaped concave surface adapted to the arc-shaped protrusion; connecting rings are respectively provided on both sides of the proximal end of the second clamping arm, and the positions of the two connecting rings correspond to the positions of the two ends of the connecting post; the connecting ring is provided with a connecting groove with an opening, and the connecting post is rotatably engaged in the connecting groove through the opening.

[0008] Optionally, the proximal end of the first clamping arm is provided with an arc-shaped groove, and a fixing ring is provided on the arc-shaped groove; the connecting post is disposed on the fixing ring, and both ends of the connecting post protrude along the width direction of the fixing ring; the proximal end of the second clamping arm is provided with two connecting rings spaced apart, and the positions of the two connecting rings correspond to the positions of the two ends of the connecting post respectively; the end of the second clamping arm between the two connecting rings is provided with an arc-shaped concave surface adapted to the fixing ring; the connecting ring is provided with a connecting groove with an opening, and the connecting post is rotatably engaged in the connecting groove through the opening.

[0009] Optionally, the proximal end of the first clamping arm is provided with an arc-shaped protrusion, and a mating groove is formed on the arc-shaped protrusion; the connecting post is disposed in the mating groove and has a gap between it and the bottom of the mating groove; the proximal end of the second clamping arm is provided with an arc-shaped concave surface adapted to the arc-shaped protrusion; a connecting ring is provided on the arc-shaped concave surface, and the position of the connecting ring corresponds to the position of the connecting post; a connecting groove with an opening is formed on the connecting ring, and the connecting post is rotatably engaged in the connecting groove through the opening.

[0010] Optionally, multiple sets of anti-slip teeth are provided at intervals on the inner clamping surfaces of the first clamping arm and the second clamping arm respectively.

[0011] Optionally, the outer wall of the first clamping arm has an outwardly convex arc-shaped structure, and the outer wall of the second clamping arm has an inwardly concave arc-shaped structure.

[0012] Optionally, the distal end of the first clamping arm is provided with a cutting structure; the distal end of the second clamping arm is provided with a clamping head structure adapted to the cutting structure.

[0013] Optionally, a clamping post is embedded on the outer wall of the first clamping arm near the distal end; the clamping head structure includes: a hook groove formed on the end of the second clamping arm and adapted to the cutting structure, and clamping members disposed on both sides of the hook groove.

[0014] Optionally, the cutting structure includes: a hook portion with a groove on its inner side, and a cutting portion disposed at one end of the hook portion; the clamping head structure includes: a limiting post adapted to the groove; when the two clamping arms are closed, the limiting post is engaged in the groove. The cooperation between the cutting structure and the clamping head structure significantly improves the fastening reliability of the ligation clip, ensuring a continuous and stable clamping effect. When the clamping arms are closed, the limiting post is engaged in the groove, effectively preventing disengagement and displacement, while the hook portion is confined in the groove, enhancing lateral anti-slip capability.

[0015] Optionally, the cutting structure further includes toothed portions disposed on the hook portion, with the toothed portions and the cutting portion located at opposite ends of the hook portion. In use, the teeth can pierce the fascia, preventing fascia slippage and facilitating tissue cutting by the cutting portion.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention utilizes a split structural design, making the first and second clamping arms of the ligation clip independent components that can be manufactured separately. This design offers the following significant advantages:

[0018] 1. By precisely controlling the fitting clearance between the connecting column diameter and the connecting groove, the closing force can be controlled within a certain range, reducing the deviation of the rotation angle and ensuring firm and reliable clamping of tissues during surgery. Furthermore, this structure can withstand numerous opening and closing cycles, significantly extending its fatigue life compared to traditional one-piece structures. Additionally, only a single component needs to be replaced after damage, reducing maintenance costs.

[0019] 2. The modular design allows for the use of the most suitable materials for each component, ensuring durability. For example, the connecting posts and connecting grooves are made of high-strength materials (such as medical-grade titanium alloy); the clamping arm body is made of a flexible material (such as reinforced PEEK material). This optimized combination of materials can significantly improve the overall performance of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of one embodiment of the split-type ligation clip of this utility model.

[0022] Figure 2 for Figure 1 Decomposition structure diagram Figure 1 .

[0023] Figure 3 for Figure 1 Decomposition structure diagram Figure 2 .

[0024] Figure 4 This is a schematic diagram of the structure of Example 2.

[0025] Figure 5 for Figure 4 A schematic diagram of its decomposed structure.

[0026] Figure 6 This is a schematic diagram of the structure of Example 3.

[0027] Figure 7 for Figure 6 Decomposition structure diagram Figure 1 .

[0028] Figure 8 for Figure 6 Decomposition structure diagram Figure 2 .

[0029] Figure 9 This is a schematic diagram of the cutting structure in Example 4.

[0030] Figure 10 This is a schematic diagram of the card head structure in Example 4.

[0031] Figure label:

[0032] 1. First clamping arm; 11. Arc-shaped protrusion; 111. Mating groove; 12. Arc-shaped groove; 13. Retaining ring;

[0033] 2. Second clamping arm; 21. Arc-shaped concave surface;

[0034] 3. Cutting structure; 31. Hook portion; 311. Groove; 32. Cutting portion; 33. Toothed portion;

[0035] 4. Clamping head structure; 41. Hook groove; 42. Clamping component; 43. Bending part; 431. Clamping groove; 44. Limiting post;

[0036] 5. Connecting column;

[0037] 6. Connecting ring; 61. Connecting groove;

[0038] 7. Apply clamping column; 8. Anti-slip teeth. Detailed Implementation

[0039] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0040] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model application according to the specific circumstances.

[0043] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0045] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0046] Currently, most ligation clips on the market adopt a one-piece structure, with the two clip arms molded in one piece using an injection molding process. Although this one-piece structure is simple to manufacture, it has the following shortcomings: 1. Due to the limitations of material properties, it is prone to insufficient closing force and instability after repeated opening and closing, affecting the performance of the ligation clip and potentially leading to fatigue fracture, thus limiting its service life; 2. The one-piece design makes it difficult to optimize materials for the functional requirements of different parts of the clip arms.

[0047] This utility model application provides a split-type ligation clip to solve the above-mentioned problems. The split-type ligation clip includes a first clamping arm and a second clamping arm. The proximal end of the first clamping arm is provided with a connecting post, and the proximal end of the second clamping arm is provided with a connecting groove adapted to the connecting post. The connecting post is rotatably embedded in the connecting groove, and the two clamping arms form an openable and closable structure through the cooperation of the connecting post and the connecting groove.

[0048] This invention designs the ligation clip as an independent, separate unit. The first and second clamping arms can be molded separately. During design, the fit clearance between the connecting post diameter and the connecting groove can be optimized to control the closing force within a preset range, reducing rotation angle deviation and ensuring secure tissue clamping during use. Furthermore, it avoids fatigue caused by repeated opening and closing cycles, preventing any impact on the ligation clip's performance. Simultaneously, during injection molding, the optimal materials for each component can be selected based on different needs; for example, the connecting post and connecting groove can be made of materials with higher strength than the clamping arms.

[0049] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings:

[0050] Example 1

[0051] like Figures 1-3 As shown in the figure, this utility model application provides a split-type ligation clip, including a first clamping arm 1 and a second clamping arm 2 that can be opened and closed relative to each other. The distal end of the first clamping arm 1 is provided with a cutting structure 3, and the distal end of the second clamping arm 2 is provided with a clamping head structure 4 adapted to the cutting structure 3. When the first clamping arm 1 and the second clamping arm 2 are closed, the cutting structure 3 and the clamping head structure 4 cooperate to cut the tissue.

[0052] Optionally, the outer wall of the first clamping arm 1 has an outwardly convex arc-shaped structure, and its distal end gradually bends inward to form a curved section, with the cutting structure 3 located at the end of the curved section. The outer wall of the second clamping arm 2 has an inwardly concave arc-shaped structure, with the clamping head structure 4 located at the distal end of the second clamping arm 2.

[0053] Furthermore, the first clamping arm 1 has a connecting post 5 at its proximal end, and the second clamping arm 2 has a connecting groove 61 that is adapted to the connecting post 5 at its proximal end. The connecting post 5 is rotatably embedded in the connecting groove 61. The first clamping arm 1 and the second clamping arm 2 form an openable ligation clamp through the connection and cooperation of the connecting post 5 and the connecting groove 61.

[0054] Specifically,

[0055] The first clamping arm 1 has an arc-shaped protrusion 11 at its proximal end, that is, the arc-shaped protrusion 11 extends from the proximal end of the first clamping arm 1 and its outer wall has a curved arc structure; the second clamping arm 2 has an arc-shaped concave surface 21 at its proximal end that matches the arc-shaped protrusion 11.

[0056] The connecting post 5 is fixed on the arc-shaped protrusion 11, and both ends of the connecting post 5 protrude along the width direction of the first clamping arm 1. The connecting post 5 can be a single unit, that is, the connecting post 5 extends to both sides of the arc-shaped protrusion 11 after passing through the arc-shaped protrusion 11; the connecting post 5 can also be composed of two cylinders fixed on the two side walls of the arc-shaped protrusion 11.

[0057] Connecting rings 6 are connected to the outer walls of the two proximal ends of the second clamping arm 2, respectively. The position of the connecting rings 6 corresponds to the position of the connecting posts 5 on both sides of the arc-shaped protrusion 11. A connecting groove 61 is provided on the connecting rings 6. The connecting groove 61 has an opening, and the connecting posts 5 are rotatably connected to the connecting groove 61 through the opening.

[0058] Optionally, the connecting column 5 is a cylindrical structure.

[0059] Optionally, the connecting groove 61 has a U-shaped structure.

[0060] Example 2

[0061] like Figure 4 and Figure 5 As shown in the figure, this utility model application provides a split-type ligation clip, including a first clamping arm 1 and a second clamping arm 2 that can be opened and closed relative to each other. The distal end of the first clamping arm 1 is provided with a cutting structure 3, and the distal end of the second clamping arm 2 is provided with a clamping head structure 4 adapted to the cutting structure 3. When the first clamping arm 1 and the second clamping arm 2 are closed, the cutting structure 3 and the clamping head structure 4 cooperate to cut the tissue.

[0062] Optionally, the outer wall of the first clamping arm 1 has an outwardly convex arc-shaped structure, and its distal end gradually bends inward to form a curved section, with the cutting structure 3 located at the end of the curved section. The outer wall of the second clamping arm 2 has an inwardly concave arc-shaped structure, with the clamping head structure 4 located at the distal end of the second clamping arm 2.

[0063] In this embodiment, the end of the first clamping arm 1 furthest from the distal end is provided with an arc-shaped groove 12, and a fixing ring 13 is fixed on the arc-shaped groove 12. A connecting post 5 is provided on the fixing ring 13, and the two ends of the connecting post 5 protrude along the width direction of the fixing ring 13. The connecting post 5 can be a single piece, that is, the connecting post 5 passes through the fixing ring 13 and its two ends extend to both sides of the fixing ring 13. The connecting post 5 can also be composed of two cylinders fixed on the two side walls of the fixing ring 13.

[0064] The proximal end of the second clamping arm 2 is fixedly connected to two connecting rings 6. The two connecting rings 6 are spaced apart. The position of the connecting rings 6 corresponds to the position of the connecting posts 5 on both sides of the fixed ring 13. The connecting rings 6 are provided with connecting grooves 61 with openings. The two connecting grooves 61 are rotatably connected to the connecting posts 5 protruding on the outside of the fixed ring 13.

[0065] Optionally, the fixing ring 13 is located at the middle position of the arc groove 12, the gap between the two connecting rings 6 is adapted to the width of the fixing ring 13, the outer wall of the connecting ring 6 and the outer wall of the second clamping arm 2 are on the same horizontal plane, and the proximal end of the second clamping arm 2 located between the two connecting rings 6 is provided with an arc-shaped concave surface 21 adapted to the fixing ring 13.

[0066] Optionally, the connecting column 5 is a cylindrical structure.

[0067] Optionally, the connecting groove 61 has a U-shaped structure.

[0068] Example 3

[0069] like Figure 6 and Figure 8As shown in the figure, this utility model application provides a split-type ligation clip, including a first clamping arm 1 and a second clamping arm 2 that can be opened and closed relative to each other. The distal end of the first clamping arm 1 is provided with a cutting structure 3, and the distal end of the second clamping arm 2 is provided with a clamping head structure 4 adapted to the cutting structure 3. When the first clamping arm 1 and the second clamping arm 2 are closed, the cutting structure 3 and the clamping head structure 4 cooperate to cut the tissue.

[0070] Optionally, the outer wall of the first clamping arm 1 has an outwardly convex arc-shaped structure, and its distal end gradually bends inward to form a curved section, with the cutting structure 3 located at the end of the curved section. The outer wall of the second clamping arm 2 has an inwardly concave arc-shaped structure, with the clamping head structure 4 located at the distal end of the second clamping arm 2.

[0071] In this embodiment, the proximal end of the first clamping arm 1 is provided with an arc-shaped protrusion 11, which extends from the proximal end of the first clamping arm 1 and has a curved arc structure on its outer wall. A mating groove 111 is provided on the arc-shaped protrusion 11, and the connecting post 5 is fixed in the mating groove 111. The connecting post 5 is located near the end of the arc-shaped protrusion 11, that is, there is a gap between the connecting post 5 and the bottom of the mating groove 111.

[0072] Furthermore, the proximal end of the second clamping arm 2 is provided with an arc-shaped concave surface 21, and a connecting ring 6 is fixedly connected to the arc-shaped concave surface 21. The position of the connecting ring 6 corresponds to the position of the connecting post 5, and a connecting groove 61 is provided on the connecting ring 6. The connecting groove 61 has an opening, and the connecting groove 61 is rotatably connected to the connecting post 5 through the opening.

[0073] Optionally, the connecting ring 6 is located at the middle of the arc-shaped concave surface 21, which can be adapted to the curved arc structure of the outer wall of the arc-shaped protrusion 11, and the width of the mating groove 111 is adapted to the width of the hook portion 31.

[0074] Optionally, the connecting column 5 is a cylindrical structure.

[0075] Optionally, the connecting groove 61 has a U-shaped structure.

[0076] Example 4

[0077] Based on any of the above embodiments, the split ligation clip also includes an application post 7 embedded in the first clamping arm 1, and multiple sets of anti-slip teeth 8 disposed on the clamping surface inside the clamping arm.

[0078] In one embodiment, the clamping head structure 4 includes a hook groove formed at the end of the second clamping arm 2 and adapted to the cutting structure 3, and clamping members symmetrically disposed on both sides of the hook groove.

[0079] The following description of the embodiments is based primarily on the case of Embodiment 1.

[0080] refer to Figures 1-3A clamping post 7 is embedded on the outer wall of the first clamping arm 1 near its distal end. The two ends of the clamping post 7 protrude along the width direction of the first clamping arm 1, and part of the clamping post 7 protrudes from the outer wall of the first clamping arm 1. The outer wall of the distal end of the first clamping arm 1 has a curved arc structure, and the clamping post 7 is located close to the cutting structure 3.

[0081] Furthermore, the clamping head structure 4 includes a hook groove 41 formed at the end of the second clamping arm 2 and adapted to the cutting structure 3, and clamping members 42 symmetrically disposed on both sides of the hook groove 41. When the first clamping arm 1 and the second clamping arm 2 are closed, the cutting structure 3 cooperates with the hook groove 41 to cut the tissue. Through the cooperation between the cutting structure 3 and the hook groove 41, lateral sliding displacement of the cutting structure 3 can be avoided after closing.

[0082] Optionally, the cutting structure 3 has bevels on both sides, and the two bevels are gradually inclined from the outside to the inside from one end of the curved section, with the outer ends of the two bevels approaching each other to form a pointed shape.

[0083] Optionally, multiple sets of anti-slip teeth 8 are provided at intervals on the inner clamping surfaces of the first clamping arm 1 and the second clamping arm 2, respectively. Each set of anti-slip teeth 8 is formed by two adjacent and staggered anti-slip teeth, that is, two anti-slip teeth are respectively provided on both sides of the inner surface, and the two anti-slip teeth are close to each other and staggered. The anti-slip teeth can ensure that the ligation clip is not easy to slip off during clamping, further making the ligation clip stable and reliable.

[0084] Example 5

[0085] Based on Embodiments 1, 2 or 3, this embodiment provides a cutting structure for a split-type ligation clip and a clip head structure used in conjunction with the cutting structure.

[0086] Specifically, refer to Figure 9 and Figure 10 As shown, the cutting structure includes a hook portion 31, a groove 311 is provided on the inner side of the hook portion 31, and a cutting portion 32 is integrally formed on the upper end of the hook portion 31.

[0087] The clamping head structure includes a curved portion 43 formed at the distal end of the clamping arm. The curved portion 43 is formed by bending inward from the distal end of the clamping arm, and its outer wall has a curved arc structure. A groove 431 is formed on the curved portion 43, and a limiting post 44 adapted to the groove 311 is provided within the groove 431. The limiting post 44 is fixed within the groove 431, and there is a gap between it and the bottom of the groove 431. When the ligation clamp is closed, the limiting post 44 of one clamping arm engages with the groove 311 of the other clamping arm, and the limiting post 44 abuts against the bottom of the groove 311, thereby improving the stability of the ligation clamp and preventing it from easily loosening.

[0088] In one embodiment, the cutting structure further includes a toothed portion 33, which is disposed at the other end of the hook portion 31 away from the cutting portion 32. That is, the two ends of the hook portion 31 are respectively provided with the cutting portion 32 and the toothed portion 33. In use, due to the provision of the toothed portion 33, when the two clamping arms are closed, the toothed portion 33 located below the cutting portion 32 can pierce the tissue (such as fascia), preventing the tissue (fascia) from slipping, which is beneficial for the cutting portion 32 to cut the tissue (fascia).

[0089] It should be noted that the cutting structure and clamping head structure in this embodiment are different from those in embodiments 1-4. In this embodiment, the cutting structure can be installed on any clamping arm as needed, and the clamping head structure can be installed on the corresponding other clamping arm. Optionally, clamping posts can be installed on both clamping arms. Multiple sets of anti-slip teeth can also be installed on the inner clamping surfaces of the clamping arms.

[0090] Any aspects not described in detail in this embodiment are techniques known in the art.

[0091] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A split-type ligation clip, comprising a first clamping arm and a second clamping arm, characterized in that: The first clamping arm is provided with a connecting post at its proximal end; The second clamping arm has a connecting groove at its proximal end that is adapted to the connecting post; The connecting column is rotatably mounted in the connecting groove, so that the first clamping arm and the second clamping arm form a movable connecting structure that can be opened and closed relative to each other.

2. The split-type ligation clip according to claim 1, characterized in that: The first clamping arm has an arc-shaped protrusion at its proximal end; The connecting post is disposed on the arc-shaped protrusion, and both ends of the connecting post protrude along the width direction of the first clamping arm; The proximal end of the second clamping arm is provided with an arc-shaped concave surface that matches the arc-shaped protrusion; The second clamping arm has connecting rings on both sides near its proximal end, and the positions of the two connecting rings correspond to the positions of the two ends of the connecting post. The connecting ring has an open connecting groove, and the connecting post is rotatably engaged in the connecting groove through the opening.

3. The split-type ligation clip according to claim 1, characterized in that: The first clamping arm has an arc-shaped groove at its proximal end, and a fixing ring is provided on the arc-shaped groove; The connecting post is disposed on the fixing ring, and both ends of the connecting post protrude along the width direction of the fixing ring; The proximal end of the second clamping arm is provided with two connecting rings spaced apart, and the positions of the two connecting rings correspond to the positions of the two ends of the connecting post, respectively. The end of the second clamping arm between the two connecting rings is provided with an arc-shaped concave surface that is adapted to the fixing ring; The connecting ring has an open connecting groove, and the connecting post is rotatably engaged in the connecting groove through the opening.

4. The split-type ligation clip according to claim 1, characterized in that: The first clamping arm has an arc-shaped protrusion at its proximal end, and a mating groove is formed on the arc-shaped protrusion; The connecting post is disposed in the mating groove and has a gap between it and the bottom of the mating groove; The proximal end of the second clamping arm is provided with an arc-shaped concave surface that matches the arc-shaped protrusion; A connecting ring is provided on the arc-shaped concave surface, and the position of the connecting ring corresponds to the position of the connecting post; The connecting ring has an open connecting groove, and the connecting post is rotatably engaged in the connecting groove through the opening.

5. The split-type ligation clip according to claim 1, characterized in that, Multiple sets of anti-slip teeth are provided at intervals on the inner clamping surfaces of the first clamping arm and the second clamping arm respectively.

6. The split-type ligation clip according to claim 1, characterized in that, The outer wall of the first clamping arm has an outwardly convex arc-shaped structure, and the outer wall of the second clamping arm has an inwardly concave arc-shaped structure.

7. The split-type ligation clip according to any one of claims 1-6, characterized in that: The distal end of the first clamping arm is provided with a cutting structure; The distal end of the second clamping arm is provided with a clamping head structure adapted to the cutting structure.

8. The split-type ligation clip according to claim 7, characterized in that: A clamping post is embedded in the outer wall of the first clamping arm near the distal end; The card head structure includes: A hook groove formed at the end of the second clamping arm and adapted to the cutting structure, and Clamping elements are provided on both sides of the hook groove.

9. The split-type ligation clip according to claim 7, characterized in that: The cutting structure includes: The hook part with a groove on the inside, and A cutting portion is provided at one end of the hook portion; The card head structure includes: A limiting post adapted to the groove; When the two clamping arms are closed, the limiting post is engaged in the groove.

10. The split-type ligation clip according to claim 9, characterized in that, The cutting structure further includes a toothed portion disposed on the hook portion, wherein the toothed portion and the cutting portion are respectively located at both ends of the hook portion.

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