Anterior cruciate ligament bone tunnel cushion block

Abstract

The utility model belongs to the technical field of anterior cruciate ligament bone tunnel repair, and particularly relates to an anterior cruciate ligament bone tunnel cushion block. Comprising a cushion block body, one side of the cushion block body is a working face used for making contact with a reconstructed anterior cruciate ligament, the other side of the cushion block body is a fixing face used for making contact with the side wall of a bone tunnel and being fixed, the working face and the fixing face of the cushion block body are both curved faces, and screw holes are formed in the end face of the cushion block body. And screws for temporarily fixing the cushion block body are mounted in the screw holes. By implanting the cushion block body into the bone tunnel, the purpose of repairing the bone tunnel can be achieved, and the bone tunnel can be restored to the original size and shape, so that the position of the reconstructed anterior cruciate ligament can be corrected, and the normal function of the anterior cruciate ligament can be ensured to be realized.

Description

Technical Field

[0001] This utility model belongs to the field of anterior cruciate ligament bone tunnel repair technology, specifically relating to an anterior cruciate ligament bone tunnel pad. Background Technology

[0002] Anterior cruciate ligament (ACL) injury is one of the most common and serious sports injuries of the knee. An ACL tear causes knee instability, and improper treatment can lead to severe knee dysfunction. Due to the high force of the injury, it is often accompanied by damage to other major structures. Improper diagnosis and treatment can delay treatment. Furthermore, as the biomechanical function of the ACL is increasingly recognized, and given the functional instability caused by the injury, the knee joint may not meet the needs of daily life and sports, and can lead to a series of long-term knee complications. Therefore, surgical treatment is necessary to reconstruct the ligament and restore its function.

[0003] In anterior cruciate ligament (ACL) reconstruction surgery, the first step is to arthroscopically create tibial and femoral bone tunnels at the superior and inferior insertion points of the ACL. A new ACL replacement is then installed in the original ACL position, with both ends placed within the bone tunnels. The implanted ACL replacement is then fixed at its superior and inferior insertion points, allowing it to replace the original ACL and resume its function of connecting the femur and tibia. However, after ACL reconstruction, prolonged use during activity can cause the bone tunnels to widen and deform due to friction with the ACL replacement. This can lead to displacement of the ACL replacement and severely impair its normal function. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model discloses an anterior cruciate ligament bone tunnel pad, and specifically discloses the following technical solutions:

[0005] An anterior cruciate ligament bone tunnel pad includes a pad body, one side of which is a working surface for contacting the reconstructed anterior cruciate ligament, and the other side of which is a fixing surface for contacting and fixing the sidewall of the bone tunnel. Both the working surface and the fixing surface of the pad body are curved surfaces. A screw hole is provided on the end face of the pad body for installing screws to temporarily fix the pad body.

[0006] Furthermore, the screw hole is a through hole inclined toward the fixing surface of the pad body, and one port of the screw hole is located on the end face of the pad body, and the other port is located on the fixing surface of the pad body.

[0007] Furthermore, the angle between the screw hole and the axial direction of the bone marrow tract is 10-20°.

[0008] Furthermore, a number of micropores are evenly distributed on the fixing surface of the pad body.

[0009] Furthermore, the working surface of the pad body is a smooth curved surface.

[0010] Furthermore, the pad body is made of titanium alloy.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By implanting the pad body of this utility model into the bone tunnel, the bone tunnel can be repaired, restoring it to its original size and shape, thereby correcting the position of the reconstructed anterior cruciate ligament and ensuring its normal function.

[0013] The pad body is provided with screw holes, which can be used to install screws, thereby enabling the pad body to be temporarily fixed in the bone tunnel to prevent it from falling or moving.

[0014] The fixing surface of the pad body is evenly provided with several micropores, which can facilitate the growth of human bone tissue into the micropores, thereby ensuring that the pad body can be firmly fixed to the side wall of the bone tunnel. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the present invention from one perspective.

[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0017] Figure 3 This is a schematic diagram of the present invention after it has been installed into the bone marrow tract.

[0018] 1-Working surface, 2-Fixing surface, 3-Screw hole, 4-Bone marrow duct. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1-3An anterior cruciate ligament bone tunnel pad includes a pad body. One side of the pad body is a working surface 1 for contacting the reconstructed anterior cruciate ligament, and the other side of the pad body is a fixing surface 2 for contacting and fixing the sidewall of the bone tunnel. Both the working surface 1 and the fixing surface 2 of the pad body are curved surfaces, with the working surface 1 being an inwardly concave surface and the fixing surface 2 being an outwardly convex surface. A screw hole 3 is provided on the end face of the pad body, and a screw for temporarily fixing the pad body is installed in the screw hole 3. The end of the working surface 1 away from the end face gradually approaches the end of the fixing surface 2 away from the end face.

[0021] In this embodiment, the screw hole 3 is a through hole inclined towards the fixing surface 2 of the pad body, with one port of the screw hole 3 located on the end face of the pad body and the other port located on the fixing surface 2 of the pad body. The inclined arrangement of the screw hole 3 facilitates the installation of screws on the pad body without hindering the movement of the reconstructed anterior cruciate ligament.

[0022] In this embodiment, the angle between the screw hole 3 and the axial direction of the bone marrow tract 4 is 10-20°, thereby ensuring that the movement of the reconstructed anterior cruciate ligament will not be hindered after the screw is inserted into the screw hole.

[0023] In this embodiment, a number of micropores are uniformly arranged on the fixing surface 2 of the pad body, which facilitates the growth of human bone tissue into the micropores, thereby ensuring that the pad body and the sidewall of the bone tunnel can be firmly connected and fixed.

[0024] In this embodiment, the working surface 1 of the pad body is a smooth curved surface, which can reduce friction and improve the service life of the pad body and the reconstructed anterior cruciate ligament.

[0025] In this embodiment, the pad body is made of titanium alloy, which has high strength and good wear resistance, thus ensuring the service life of the pad body.

[0026] The pads in this invention can be customized according to specific circumstances or mass-produced according to certain standards. Customized pads can be directly installed in the corresponding bone tunnels for use. Before mass-produced pads are used, the bone tunnels need to be simply modified to an appropriate shape before the pads can be installed.

[0027] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An anterior cruciate ligament bone tunnel spacer, comprising: The cushion block body has a working surface on one side for contacting the reconstructed anterior cruciate ligament and a fixing surface on the other side for contacting and fixing with the sidewall of the bone tunnel, the working surface and the fixing surface of the cushion block body are both curved surfaces, a screw hole is formed on the end surface of the cushion block body, and a screw for temporarily fixing the cushion block body is arranged in the screw hole.

2. The anterior cruciate ligament bone tunnel spacer of claim 1, wherein, The screw hole is a through hole inclined to the fixing surface of the cushion block body, and one end of the screw hole is located on the end surface of the cushion block body and the other end is located on the fixing surface of the cushion block body.

3. The anterior cruciate ligament bone tunnel spacer of claim 2, wherein, The included angle between the screw hole and the axial direction of the bone marrow channel is 10-20°.

4. The anterior cruciate ligament bone tunnel spacer of claim 1, wherein, The fixing surface of the cushion block body is uniformly provided with a plurality of micropores.

5. The anterior cruciate ligament bone tunnel spacer of claim 1, wherein, The working surface of the cushion block body is a smooth curved surface.

6. The anterior cruciate ligament bone tunnel spacer of claim 1, wherein, The cushion block body is made of titanium alloy.

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