A plate for arthroscopic fixation of anterior and posterior cruciate ligament avulsion fractures

Abstract

This utility model relates to the field of medical device technology and discloses a fixation plate for anterior and posterior cruciate ligament avulsion fractures under arthroscopy. The plate includes a plate body with both ends bent inwards to form an arc shape that provides a larger contact area with the ligament. The upper and lower surfaces of the plate body are flat, and the plate body has grooves with multiple suture holes. This utility model utilizes an arc-shaped plate, whose arc design conforms to the ligament, increasing the contact area between the plate and the ligament. This effectively avoids excessive local pressure on the ligament, reducing ligament stress. Furthermore, the flat surfaces on the plate facilitate pressure reduction of the bone fragments. The multiple suture holes and grooves allow for more flexible suture insertion during surgery, enabling the surgeon to quickly select the most suitable suture hole based on the specific shape and location of the fracture, achieving a better fixation effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a fixation plate for anterior and posterior cruciate ligament avulsion fractures under arthroscopy. Background Technology

[0002] Posterior cruciate ligament avulsion fracture is a traumatic injury in sports medicine, commonly seen in traffic accidents or high-level athletic injuries. Traditional treatment involves incising the posterior knee joint to fix the fractured fragments; however, due to the rich blood vessel and nerve distribution in the posterior knee joint, this is easily damaged, making clinical treatment very challenging.

[0003] With the popularization of precision medicine and minimally invasive concepts, the clinical treatment method for posterior cruciate ligament (PCL) posterior tibial condyle avulsion fractures is to use non-absorbable sutures or wires to ligate the ligament insertion point or the avulsed bone fragment, i.e., arthroscopic avulsion fracture ligation fixation. However, this surgical treatment method has serious shortcomings: in order to restore the inherent tension of the PCL, the traction suture needs to be tightened. After the traction suture is tightened, it compresses the ligament, causing severance or cutting of the ligament, resulting in poor local blood circulation at the ligament insertion point and poor fracture healing, or causing the avulsed bone fragment to be cut, thus disrupting the continuity of the bone after reduction. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing an arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures. The plate has a large contact area with the ligament, which can prevent the ligament from being subjected to excessive pressure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fixation plate for anterior and posterior cruciate ligament avulsion fractures under arthroscopy includes a plate body. The two ends of the plate body are bent inward to form an arc shape that has a larger contact area with the ligament. The upper and lower surfaces of the plate body are flat. The plate body is provided with a wire groove, and multiple wire holes are opened in the wire groove.

[0007] Preferably, the groove includes multiple vertically opened groove 1 and horizontally opened groove 2, and the groove 1 and groove 2 are interconnected.

[0008] Preferably, the multiple threading holes are staggered vertically, and the threading holes on the left and right sides of the plate are symmetrically positioned. The staggered arrangement of the threading holes further optimizes the distribution of the fixation wires. Threading holes at different heights allow the fixation wires to fix ligaments and bone blocks from different levels, increasing the dimensions of fixation and improving the reliability of fixation.

[0009] Preferably, the suture holes are respectively opened on multiple suture grooves 2, and the number of suture holes corresponds to the number of suture grooves 2. Each suture groove 2 is provided with a corresponding suture hole. Multiple suture holes allow doctors to accurately select suture holes for fixation according to the size, shape and stress of the fracture fragment.

[0010] Preferably, the plate has grooves at both ends. The grooves at both ends of the plate greatly facilitate the surgical operation. During the operation, the doctor can make fine adjustments to the position of the plate by using instruments in conjunction with the grooves, ensuring that the arc surface of the plate fits tightly with the ligament and the plane is accurately aligned with the avulsed bone fragment. This makes it convenient for the doctor to adjust or replace the plate according to the actual situation during the operation.

[0011] Preferably, the plate is symmetrical in all directions. This symmetrical structure ensures that the steel plate experiences more balanced stress in all directions. When subjected to stresses from ligaments and bone fragments in different directions, the steel plate can evenly distribute these forces, preventing deformation, overturning, or displacement due to uneven stress. This not only improves the fixation stability of the steel plate but also helps maintain the correct positional relationship of the fracture site during the healing process, promoting smooth fracture healing.

[0012] Preferably, the arc diameter of the arc surface on the plate is 1-1.5 cm. This range of arc diameter can ensure the best fit between the steel plate and the ligament. The appropriate arc diameter can not only increase the contact area between the steel plate and the ligament and evenly distribute the pressure, but also better conform to the natural curvature of the ligament, reduce additional friction and damage to the ligament, and facilitate the normal functional recovery of the ligament and the stable fixation of the fracture.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention utilizes an arc-shaped steel plate, whose arc design conforms to the ligament, increasing the contact area between the steel plate and the ligament. This effectively avoids excessive local pressure on the ligament and reduces ligament stress. Furthermore, the flat surface on the steel plate facilitates the pressure reduction of bone fragments. The design of multiple suture holes and grooves makes suture threading more flexible during surgery, allowing doctors to quickly select the most suitable suture hole based on the specific shape and location of the fracture to achieve a better fixation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a top view of the present invention.

[0019] Drawing number explanation: 1. Plate body; 2. Groove one; 3. Groove two; 4. Groove; 5. Wire hole; 6. Curved surface; 7. Plane. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0024] Please see Figure 1-3 An arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures includes a plate body 1. Both ends of the plate body 1 are bent inward to form an arc shape with a larger contact area with the ligament. The upper and lower surfaces of the plate body 1 are flat planes 7. The plate body 1 is provided with a suture groove, and multiple suture holes 5 are opened on the suture groove. The plate is made of medical metal materials with good biocompatibility and high strength, such as medical titanium alloy or stainless steel. These materials can meet the requirements for long-term use in the human body environment, will not cause serious immune reactions, and have sufficient strength to withstand various stresses during the fracture healing process.

[0025] The suture channels include multiple vertically opened suture channels 2 and horizontally opened suture channels 3, and the suture channels 2 and 3 are interconnected. Multiple threading holes 5 are opened vertically and horizontally in a staggered manner, and the threading holes 5 on the left and right sides of the plate 1 are symmetrically positioned. The staggered opening of the threading holes 5 further optimizes the distribution of the fixation lines. The threading holes 5 at different heights allow the fixation lines to fix ligaments and bone blocks from different levels, increasing the dimensions of fixation and improving the reliability of fixation.

[0026] The threading holes 5 are respectively opened on multiple suture grooves 2 3, and the number of threading holes 5 corresponds to the number of suture grooves 2 3. Each suture groove 2 3 is provided with a corresponding threading hole 5. Multiple threading holes 5 allow doctors to accurately select the threading hole 5 for fixation according to the size, shape and stress of the fracture fragment.

[0027] The plate 1 has grooves 4 at both ends. The grooves 4 at both ends of the plate 1 greatly facilitate the surgical operation. During the operation, the doctor can use the instruments and grooves 4 to make fine adjustments to the position of the plate, ensuring that the arc surface 6 of the plate fits tightly with the ligament and the plane 7 is accurately aligned with the avulsed bone fragment. This makes it convenient for the doctor to adjust or replace the plate according to the actual situation during the operation.

[0028] Plate 1 is symmetrical from left to right and top to bottom. This symmetrical structure ensures that the steel plate experiences more balanced stress in all directions. When subjected to stresses from ligaments and bone fragments in different directions, the steel plate can evenly distribute these forces, preventing deformation, overturning, or displacement due to uneven stress. This not only improves the fixation stability of the steel plate but also helps maintain the correct positional relationship of the fracture site during the healing process, promoting smooth fracture healing.

[0029] The arc diameter of the arc surface 6 on plate 1 is 1-1.5 cm. This range of arc diameter can ensure the best fit between the steel plate and the ligament. The appropriate arc diameter can not only increase the contact area between the steel plate and the ligament and evenly distribute the pressure, but also better conform to the natural curvature of the ligament, reduce additional friction and damage to the ligament, and facilitate the normal functional recovery of the ligament and the stable fixation of the fracture.

[0030] In use, this device exposes the avulsed bone fragments through the arthroscopic channel, cleans the fracture fragments, and repositions them to the attachment point. The arc-shaped surface 6 of the plate 1 is then placed in contact with and adheres to the ligament, while the plane 7 contacts and presses against the fracture fragments. Fixation sutures are then passed through the suture holes 5 to firmly fix the ligaments and bone fragments. During the fixation process, the position of the plate can be finely adjusted using surgical instruments and the grooves 4 to ensure optimal fixation. Finally, the stability of the fixation is checked, and the surgical procedure is completed.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A fixation plate for arthroscopic anterior and posterior cruciate ligament avulsion fractures, characterized in that, Includes a plate (1), the two ends of which are bent inward to form an arc shape with a larger contact area with the ligament. The upper and lower surfaces of the plate (1) are flat (7). The plate (1) is provided with a wire groove, and multiple wire holes (5) are opened on the wire groove.

2. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 1, characterized in that: The groove includes multiple vertically opened groove 1 (2) and horizontally opened groove 2 (3), and groove 1 (2) and groove 2 (3) are interconnected.

3. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 2, characterized in that: Multiple threading holes (5) are staggered vertically, and the threading holes (5) on the left and right sides of the plate (1) are symmetrical.

4. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 3, characterized in that: The threading holes (5) are respectively opened on multiple wire grooves (3), and the number of threading holes (5) corresponds to the number of wire grooves (3).

5. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 4, characterized in that: The plate (1) has grooves (4) at both the left and right ends.

6. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 5, characterized in that: The plate (1) is symmetrical in the left, right and top and bottom.

7. The arthroscopic fixation plate for anterior and posterior cruciate ligament avulsion fractures according to claim 6, characterized in that: The arc diameter of the arc surface (6) on the plate (1) is 1-1.5CM.

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