Ligation clip
By combining the hook structure and the clip head structure, the problem of insufficient fastening reliability of the ligation clip is solved, achieving stable clamping of the ligation clip and preventing dislodgement, thus improving the safety of the operation.
Patent Information
- Application Number
- CN202521032319.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2035-05-23
AI Technical Summary
The existing ligation clips have insufficient locking reliability, are prone to loosening and displacement, and affect the surgical outcome.
The combination of hook and clamp structure, along with the cooperation of limiting post and groove, enhances the locking reliability of the clamp arm, and a toothed part is provided at the distal end of the clamp arm to prevent tissue slippage.
It improves the reliability of ligation clip engagement, prevents dislodgement and displacement, ensures a continuous and stable clamping effect, and enhances the safety of the operation.
Smart Images
Figure CN224235478U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a 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 movement, making them widely used in surgery. Existing ligation clips typically employ a simple clamping arm structure, such as using a cutting section at the distal end of one arm to engage with a bevel or arc surface formed at the distal end of another arm to achieve tissue cutting. However, existing ligation clips lack reliable fastening, making them prone to loosening or snapping open; moreover, they are easily displaced during intraoperative traction, affecting surgical outcomes. Summary of the Invention
[0003] In view of the above situation and to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a ligation clip that solves the technical problems of insufficient fastening reliability and easy loosening and displacement of existing ligation clips. This utility model ligation clip has multiple advantages, including anti-loosening, anti-slip, and secure clamping, providing a safer and more reliable guarantee for surgical procedures and significantly improving the performance of the ligation clip.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A ligation clip includes a first clamping arm and a second clamping arm. The distal end of the first clamping arm is provided with a hook structure, the hook structure including: a bent hook portion with a groove on its inner side, and a cutting portion disposed at one end of the bent hook portion; the distal end of the second clamping arm is provided with a clamping head structure, the clamping head structure including: a limiting post adapted to the groove; when the first clamping arm and the second clamping arm are closed, the limiting post is engaged in the groove.
[0006] This invention significantly improves the locking reliability of the ligation clip through the cooperation of the hook structure and the clamping head structure, ensuring a continuous and stable clamping effect. Specifically, when the first and second clamping arms are closed, the cylindrical limiting post of the second clamping arm engages in the groove of the first clamping arm. The cooperation between the limiting post and the groove effectively prevents disengagement and displacement.
[0007] Optionally, the length of the second clamping arm is greater than the length of the first clamping arm. Since the second clamping arm is longer than the first clamping arm, the first clamping arm will be in a compressed state when closed, and the cylindrical limiting post of the second clamping arm will be close to the bottom of the groove, further improving the fastening effect and preventing disengagement.
[0008] Optionally, the hook structure further includes: a toothed portion disposed on the hook portion; the toothed portion and the cutting portion are respectively located at both ends of the hook portion. By adding a toothed portion that can pierce tissue (fascia), the teeth can pierce the fascia during use, preventing fascia slippage and facilitating the cutting portion to cut the tissue.
[0009] Optionally, the hook portion has a C-shaped structure; the cutting portion extends from one end of the hook portion to form a pointed cutting head, and the toothed portion extends from the other end of the hook portion to form pointed piercing teeth; the opening side of the hook portion is provided with a downwardly recessed arc-shaped groove, which forms part of the groove. The arc-shaped groove further prevents disengagement.
[0010] Optionally, the cutting portion has a first inclined surface on each side, and the two first inclined surfaces are gradually inclined from the outside to the inside from one end of the hook portion.
[0011] Optionally, the outer wall of the toothed portion has a plurality of second inclined surfaces, which are gradually inclined from the outside to the inside from one end of the hook portion.
[0012] Optionally, the distal end of the first clamping arm is provided with an arc-shaped groove, and the hook structure is disposed on the arc-shaped groove.
[0013] Optionally, the clamping head structure further includes: a curved portion formed at the distal end of the second clamping arm; the curved portion having a groove adapted to the width of the hook portion; and a limiting post disposed within the groove, forming a gap with the bottom of the groove. By creating a groove on the curved portion at the distal end of the second clamping arm and placing the limiting post within the groove, the hook portion is confined within the groove when the clamping arm is closed, thereby effectively enhancing lateral anti-slip capability and preventing displacement.
[0014] Optionally, a first clamping post is embedded on the outer wall of the second clamping arm near the distal end, with both ends of the first clamping post protruding along the width direction of the second clamping arm, and the first clamping post partially protruding from the outer wall of the second clamping arm; a second clamping post is provided on the first clamping arm near the hook structure, with both ends of the second clamping post protruding along the width direction of the first clamping arm.
[0015] 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.
[0016] Optionally, the first clamping arm and the second clamping arm are separate structures.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. This utility model significantly improves the fastening reliability of the ligation clip through the cooperation of the hook structure and the clip head structure, ensuring a continuous and stable clamping effect. Specifically, when the first and second clamping arms are closed, the cylindrical limiting post of the second clamping arm engages in the buckling groove of the first clamping arm. Through the cooperation of the limiting post and the groove, it can effectively prevent disengagement and displacement. Moreover, since the second clamping arm is longer than the first clamping arm, the first clamping arm will be in a compressed state when closed, and the cylindrical limiting post of the second clamping arm will be close to the bottom of the groove, further improving the fastening effect and preventing disengagement.
[0019] 2. By creating a slot on the curved part at the far end of the second clamping arm and placing a cylindrical limiting post in the slot, the hook part will be restricted in the slot when the clamping arm is closed, thereby effectively enhancing the lateral anti-slip capability and preventing displacement.
[0020] 3. The hook structure is equipped with serrated parts that can pierce tissue (fascia). During use, the teeth can pierce the fascia, preventing fascia slippage and facilitating the cutting of tissue by the cutting part. Attached Figure Description
[0021] 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.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model.
[0023] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.
[0024] Figure 3 This is a front view structural diagram of the present invention.
[0025] Figure 4 This is a top view of the structure of this utility model.
[0026] Figure label:
[0027] 1. First clamping arm; 11. Arc-shaped groove;
[0028] 2. Second clamping arm;
[0029] 3. Hook structure; 31. Hook portion; 311. Groove; 32. Cutting portion; 321. First inclined surface; 33. Toothed portion; 331. Second inclined surface;
[0030] 4. Card head structure; 41. Bending part; 411. Card slot; 42. Limiting post;
[0031] 5. First clamping post; 6. Second clamping post; 7. Anti-slip teeth. Detailed Implementation
[0032] 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.
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0039] like Figures 1-4 As shown in the figure, this utility model application provides a 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 hook structure 3, and the distal end of the second clamping arm 2 is provided with a clamping head structure 4 adapted to the hook structure 3. When the first clamping arm 1 and the second clamping arm 2 are closed, the hook structure 3 and the clamping head structure 4 cooperate to cut the tissue.
[0040] Furthermore, the hook structure 3 includes a hook portion 31, with a groove 311 provided on the inner side of the hook portion 31, and a cutting portion 32 integrally formed at the upper end of the hook portion 31. The clamping head structure 4 includes a limiting post 42 that matches the groove 311. When the first clamping arm 1 and the second clamping arm 2 are closed, the limiting post 42 abuts against the bottom of the groove 311, improving the stability of the ligation clip and making it less prone to loosening.
[0041] In one embodiment, the hook structure 3 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 first clamping arm 1 and the second clamping arm 2 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).
[0042] In one embodiment, the clamping head structure 4 further includes a curved portion 41 formed at the distal end of the second clamping arm 2. The curved portion 41 is formed by bending inward from the distal end of the second clamping arm 2, and its outer wall has a curved arc structure. A groove 411 is formed on the curved portion 41, and a limiting post 42 is fixed within the groove 411. The limiting post 42 is positioned close to the end of the curved portion 41, thus creating a gap between the limiting post 42 and the bottom of the groove 411. The width of the groove 411 is adapted to the width of the hook portion 31. When the clamping clip is closed, the limiting post 42 of the second clamping arm 2 engages in the groove 311 of the first clamping arm 1, and the hook portion 31 is confined within the groove.
[0043] Optionally, the cutting portion 32 extends from one end of the hook portion 31 to form a pointed cutting head, and the toothed portion 33 extends from the other end of the hook portion 31 to form a pointed piercing tooth.
[0044] Optionally, the cutting part 32 has a first inclined surface 321 on each side. The two first inclined surfaces 321 are gradually inclined from the outside to the inside from one end of the hook part 31, that is, the outer ends of the two first inclined surfaces 321 are close to each other to form a pointed shape.
[0045] Optionally, one side of the cutting portion 32 and the toothed portion 33 has a triangular structure.
[0046] Optionally, the outer wall of the toothed portion 33 has a plurality of second inclined surfaces 331, which are gradually inclined from the outside to the inside from one end of the hook portion 31. Preferably, there are four second inclined surfaces 331, which are respectively disposed around the toothed portion 33 to form sharp piercing teeth.
[0047] Optionally, the length of the second clamping arm 2 is greater than the length of the first clamping arm 1. In use, since the second clamping arm 2 is longer than the first clamping arm 1, the first clamping arm 1 will be in a compressed state when the ligation clip is closed, and the limiting post 42 of the second clamping arm 2 will be close to the bottom of the groove 311, so it will not be disengaged and has good closing force.
[0048] Optionally, the distal end of the first clamping arm 1 is provided with an arc-shaped groove 11, and the hook structure 3 is disposed in the arc-shaped groove 11, that is, the bottom outer wall of the hook portion 31 is fixed on the arc-shaped groove 11. Understandably, the hook portion 31 is similar to a C-shaped structure, with its opening facing the inside of the ligation clip and adapted to the limiting post 42.
[0049] Optionally, the groove 311 in the hook portion 31 extends downward, as shown in the reference. Figure 3 As shown, the opening side of the hook portion 31 has a downwardly recessed arc-shaped groove, which forms part of the groove 311.
[0050] Optionally, the limiting post 42 is a cylindrical structure. For example, when installed, the opening size of the hook portion 31 is slightly larger than the diameter of the cylindrical limiting post 42.
[0051] Optionally, a first clamping post 5 is embedded in the outer wall of the second clamping arm 2 near its distal end. The two ends of the first clamping post 5 protrude along the width direction of the second clamping arm 2, and part of the first clamping post 5 protrudes from the outer wall of the second clamping arm 2. The outer wall of the distal end of the second clamping arm 2 has a curved arc structure, and the first clamping post 5 is located near the curved part 41.
[0052] Optionally, a second clamping post 6 is also provided on the first clamping arm 1 near the arc groove 11. The second clamping post 6 is located below the arc groove 11, and its two ends protrude along the width direction of the first clamping arm 1.
[0053] Optionally, multiple sets of anti-slip teeth 7 are spaced apart on the inner clamping surfaces of the first clamping arm 1 and the second clamping arm 2, respectively. Each set of anti-slip teeth 7 is formed by two adjacent and staggered anti-slip teeth, that is, two anti-slip teeth are respectively arranged on both sides of the inner surface, and the two anti-slip teeth are close together 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.
[0054] Optionally, the outer wall of the second clamping arm 2 has an outwardly convex arc-shaped structure, and the outer wall of the first clamping arm 1 has an inwardly concave arc-shaped structure.
[0055] In one embodiment, the first clamping arm 1 and the second clamping arm 2 are separate structures (not shown in the figure). That is, the first clamping arm 1 and the second clamping arm 2 are not integral structures, but are set separately and then connected together by a hinge structure. For example, a cylindrical hinge is provided on the first clamping arm 1, and a cylindrical slot adapted to the cylindrical hinge is provided on the second clamping arm 2. By inserting the cylindrical hinge into the cylindrical slot, the first clamping arm 1 and the second clamping arm 2 rotate around the cylindrical hinge during use. Compared with integral molding, fatigue problems are less likely to occur after repeated opening and closing, and the stability of the closing force can be improved.
[0056] In use, the clamping post can be held with a tool such as clamping pliers, and then external force is applied from the outside to the inside of the two clamping arms. When the first clamping arm 1 and the second clamping arm 2 are closed, the toothed part 33 at one end of the hook 31 can pierce the tissue (such as fascia) to prevent tissue slippage, which is conducive to the cutting part 32 cutting the tissue. The cutting part 32 cooperates with the clamping head structure 4 to cut the tissue. Moreover, when the clamping arms are closed, the cylindrical limiting post 42 of the second clamping arm 2 is engaged in the snap-fit groove 311 of the first clamping arm 1. At the same time, since the arm length of the second clamping arm 2 is longer than that of the first clamping arm 1, the first clamping arm 1 will be in a compressed state when closed, and the cylindrical limiting post 42 of the second clamping arm 2 will be close to the bottom of the snap-fit groove 311, so it will not be disengaged.
[0057] Any aspects not described in detail in this embodiment are techniques known in the art.
[0058] 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 ligation clip, comprising a first clamping arm and a second clamping arm, characterized in that: The distal end of the first clamping arm is provided with a hook structure, the hook structure comprising: The hook part with a groove on the inside, and A cutting portion is provided at one end of the hook portion; The distal end of the second clamping arm is provided with a clamping head structure, the clamping head structure comprising: A limiting post adapted to the groove; When the first clamping arm and the second clamping arm are closed, the limiting post is engaged in the groove.
2. The ligation clip according to claim 1, characterized in that, The length of the second clamping arm is greater than the length of the first clamping arm.
3. The ligation clip according to claim 1, characterized in that, The hook structure also includes: A toothed portion is provided on the hook portion; The toothed portion and the cutting portion are located at both ends of the hook portion, respectively.
4. The ligation clip according to claim 3, characterized in that: The hook portion has a C-shaped structure; The cutting part extends from one end of the hook part to form a pointed cutting head, and the toothed part extends from the other end of the hook part to form a pointed piercing tooth. The opening side of the hook portion is provided with a downwardly recessed arc-shaped groove, which forms part of the groove.
5. The ligation clip according to claim 4, characterized in that, The cutting section has a first inclined surface on each side, and the two first inclined surfaces are gradually inclined from the outside to the inside from one end of the hook section.
6. The ligation clip according to claim 4, characterized in that, The outer wall of the toothed portion has multiple second inclined surfaces, which are gradually inclined from the outside to the inside starting from one end of the hook portion.
7. The ligation clip according to claim 1, characterized in that, The distal end of the first clamping arm is provided with an arc-shaped groove, and the hook structure is provided on the arc-shaped groove.
8. The ligation clip according to any one of claims 1-7, characterized in that, The card head structure also includes: The curved portion is formed at the distal end of the second clamping arm; The curved portion is provided with a slot that matches the width of the hook portion; The limiting post is disposed in the slot and forms a gap between it and the bottom of the slot.
9. The ligation clip according to claim 1, characterized in that: A first clamping post is embedded on the outer wall of the second clamping arm near the distal end. The two ends of the first clamping post protrude along the width direction of the second clamping arm, and the first clamping post protrudes from the outer wall of the second clamping arm. A second clamping post is provided on the first clamping arm near the hook structure, and the two ends of the second clamping post protrude along the width direction of the first clamping arm.
10. The ligation clip according to claim 1, characterized in that: Multiple sets of anti-slip teeth are respectively provided at intervals on the inner clamping surfaces of the first clamping arm and the second clamping arm; And / or, the first clamping arm and the second clamping arm are separate structures.