A ligament removal assembly

Abstract

The utility model relates to a kind of ligament resection components, the component includes sleeve and cutter that cooperate with each other, the cutter is combinable or independent relative to the sleeve;The cutter further includes shank and bit, and the bit is detachable relative to the shank.This new type is combined by the sleeve and cutter of split design, and cutting can be completed by sliding cutter through the passage of hollow sleeve and cooperating independent rotating cutter, avoids the integral type repeated rotation of traditional tool, facilitates operator to operate, and effectively shortens operation time.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a component for ligament resection. Background Technology

[0002] Anterior and posterior cruciate ligament injuries of the knee joint are common sports injuries, and ligament reconstruction is often required during surgical treatment. A key step in the reconstruction surgery is the removal of the remaining ligament on the femoral side to facilitate graft fixation. Currently, the traditional cutting tools commonly used in clinical practice mainly consist of a one-piece handle and a cutting blade. Their operating principle involves inserting the remaining ligament into a channel at the front of the handle, and the surgeon repeatedly rotates the handle to achieve the cut.

[0003] However, this traditional tool has significant technical limitations in practical clinical applications: (a) The operation is relatively complicated, requiring the surgeon to perform multiple rotational movements to complete the cutting, which not only prolongs the operation time but also increases the complexity of the operation.

[0004] (ii) Since the cutting process relies entirely on manual operation, the surgeon often needs to apply a lot of force in the narrow surgical space, which can easily lead to surgeon fatigue and affect surgical efficiency; moreover, the cutting precision of traditional tools is difficult to control precisely, which poses a risk of damaging surrounding normal tissues and affects surgical safety.

[0005] (iii) With increasing use, the blade at the front end of the handle is prone to wear, resulting in a decrease in cutting efficiency. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a ligament resection component to solve one or more problems in the prior art.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A ligament removal assembly includes a sleeve and a cutting tool that cooperate with each other, the cutting tool being combinable or independent relative to the sleeve; the cutting tool further includes a handle and a cutting head, the cutting head being detachable relative to the handle.

[0008] Furthermore, the sleeve has a hook at its front end and a first hole at its rear end.

[0009] Furthermore, the sleeve has a second hole at the hook portion, and the first hole communicates with the second hole.

[0010] Furthermore, the sleeve has an arc-shaped segment at one end near the hook, and the arc-shaped segment faces the hook.

[0011] Furthermore, a third hole is also provided on the surface of the sleeve.

[0012] Furthermore, one end of the cutter head is provided with an insertion part, which is arc-shaped. The outer wall of the insertion part is adapted to the arc-shaped segment and engages with the hook part when the cutter and the sleeve are combined.

[0013] Furthermore, one end of the blade tip is provided with a protrusion, and one end of the blade handle is provided with a recess, with the protrusion engaging with the recess.

[0014] Furthermore, the surface of the tool holder is also provided with a limiting part, which is configured to abut against one side of the first hole of the sleeve when the tool and the sleeve are combined.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows: (i) This new type of tool combines a split-designed sleeve and a cutting tool. The cutting tool can be slid in through the channel of the hollow sleeve and rotated independently to complete the cutting. This avoids the repeated rotation of the traditional tool, making it easier for the operator to operate and effectively shortening the operation time.

[0016] (ii) The design of the curved section of the sleeve and the entry part of the cutting tool are both based on the anatomical structure of the knee joint, closely conforming to the tissues around the ligaments and reducing the limitation of operating space. The surgeon does not need to apply great force in a confined space, reducing fatigue, while improving the accuracy of the cutting path and reducing the risk of accidentally injuring surrounding tissues.

[0017] (iii) The tool adopts a separate blade head and handle structure, and quick replacement is achieved through the connection of the protruding and recessed parts. After wear, only the blade head needs to be replaced, without the need to scrap the entire tool, thus extending the tool's service life. Attached Figure Description

[0018] Figure 1 This diagram illustrates the structure of a sleeve and cutting tool assembly for a ligament excision component according to an embodiment of the present invention.

[0019] Figure 2 A schematic diagram of the sleeve of a ligament resection component according to an embodiment of the present invention is shown.

[0020] Figure 3 A schematic diagram of the structure of a cutting tool for ligament resection according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram of the blade of a ligament excision component according to an embodiment of the present invention is shown.

[0022] Figure 5A schematic diagram of the handle of a ligament excision component according to an embodiment of the present invention is shown.

[0023] The following labels are used in the attached diagram: 1. Sleeve; 11. Hook; 12. First hole; 13. Second hole; 14. Arc-shaped segment; 15. Third hole; 2. Cutting tool; 21. Handle; 211. Recess; 212. Limiting part; 22. Cutting head; 221. Insertion part; 222. Protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a ligament resection component proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, provides further clarity. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0025] Please see Figures 1 to 5 The ligament resection assembly of this embodiment includes a sleeve 1 and a cutting tool 2 that cooperate with each other. The cutting tool 2 can be combined with or stand alone relative to the sleeve 1. The sleeve 1 first acts on the ligament, and then the cutting tool 2 acts on the ligament and cooperates with the sleeve 1 to remove the ligament. Preferably, both the sleeve 1 and the cutting tool 2 are made of high-strength stainless steel or medical alloy material, and the surface is treated with an antibacterial coating, which combines corrosion resistance and biocompatibility.

[0026] Furthermore, the sleeve 1 is defined to have a hook 11 at its front end and a first hole 12 at its rear end. The sleeve 1 has a second hole 13 at the hook 11, and the first hole 12 and the second hole 13 communicate with each other, forming a channel inside the sleeve 1. The cutter 2 extends into the first hole 12 and extends out through the second hole 13 to abut against the hook 11.

[0027] Furthermore, the sleeve 1 has an arc-shaped segment 14 at one end near the hook portion 11. The arc-shaped segment 14 faces the hook portion 11, and the extension direction of the end of the arc-shaped segment 14 is close to the hook portion 11, similar to two semicircles approaching each other to form a complete circle. Preferably, the curvature of the arc-shaped segment 14 is designed according to the anatomical structure of the knee joint, which can effectively conform to the tissues around the ligaments and reduce the risk of accidental injury during surgery.

[0028] Furthermore, the sleeve 1 is also provided with a third hole 15. When the sleeve 1 is applied to the ligament, a part of the ligament to be removed is passed through the second hole 13 and then through the third hole 15. With the help of medical staff to tighten and position it, the cutting accuracy is further improved.

[0029] Furthermore, the cutting tool 2 also includes a handle 21 and a cutting head 22. The cutting head 22 is detachable from the handle 21, facilitating replacement after long-term wear. One end of the cutting head 22 is provided with an insertion portion 221, which is arc-shaped. The outer wall of the insertion portion 221 adapts to the arc-shaped segment 14, ensuring a stable fit during operation and avoiding deviation caused by traditional rotational operations. That is, when the cutting tool 2 extends into the sleeve 1, as the depth of insertion into the sleeve 1 increases, the cutting head 22, in cooperation with the arc-shaped segment 14, engages with the hook portion 11 when the cutting tool 2 and sleeve 1 are combined, achieving precise cutting and completing the ligament resection. Compared to traditional one-piece cutting tools that require repeated rotation, the independent rotational operation and the advancement of the cutting tool 2 significantly simplify the process and reduce operator fatigue.

[0030] Furthermore, one end of the blade tip 22 is provided with a protrusion 222, and one end of the blade handle 21 is provided with a recess 211, with the protrusion 222 engaging with the recess 211. Preferably, the surfaces of the protrusion 222 and the recess 211 are provided with threads, which improves the reliability of the connection between the blade handle 21 and the blade tip 22. In other embodiments, other methods can also be used to connect the blade handle 21 and the blade tip 22.

[0031] Furthermore, the surface of the handle 21 is also provided with a limiting part 212. The limiting part 212 is configured to abut against one side of the first hole 12 of the sleeve 1 when the cutter 2 and the sleeve 1 are combined, thereby avoiding accidental damage to the ligaments caused by the cutter 2 extending too deeply into the sleeve 1.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A component for ligament resection, characterized in that: The component includes a sleeve and a cutting tool that cooperate with each other, the cutting tool being combinable or independent relative to the sleeve; the cutting tool also includes a handle and a cutting head, the cutting head being detachable relative to the handle; The sleeve has a hook at the front end and a first hole at the rear end. The sleeve has a second hole at the hook portion, and the first hole is connected to the second hole; The sleeve has an arc-shaped section at one end near the hook, and the arc-shaped section faces the hook. A third hole is also provided on the surface of the sleeve; One end of the cutter head is provided with an entry part, which is arc-shaped. The outer wall of the entry part is adapted to the arc-shaped segment and engages with the hook part when the cutter and the sleeve are combined.

2. The ligament resection component as described in claim 1, characterized in that: The blade tip is provided with a protrusion at one end and a recess at one end of the handle, with the protrusion fitting into the recess.

3. The ligament resection component as described in claim 2, characterized in that: The surface of the tool holder is also provided with a limiting part, which is configured to abut against the first hole side of the sleeve when the tool and the sleeve are combined.

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