TTA bone plate

Abstract

The utility model provides a TTA bone plate. The TTA bone plate comprises a bone plate body and a plurality of connecting parts connected to the bone plate body. The bone plate body is provided with a first end and a second end which are oppositely arranged in the height extending direction of the bone plate body, and the multiple connecting parts are located on the two opposite sides of the first end in the first direction respectively. The bone plate body is provided with a cavity and two windows formed in the two opposite sides of the bone plate body in the first direction, and the two windows communicate with the cavity. At least two supporting beams which are connected in a crossed mode are arranged in each window, at least one end of each supporting beam is connected with the inner wall of the corresponding window, and the supporting beams are obliquely arranged relative to the height extending direction of the bone plate body. The TTA bone plate not only can bear load pressure in the first direction, the second direction and the third direction, but also can bear load pressure in the direction forming an included angle with the first direction, the second direction or the third direction, so that the TTA bone plate is better in mechanical property, and the treatment effect of the TTA bone plate is better.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and more specifically, relates to a TTA bone plate. Background Technology

[0002] The anterior cruciate ligament (CCL) (known as the anterior cruciate ligament in humans) is a vital ligament in the canine knee joint, connecting the femur and tibia. It prevents the tibia from sliding forward, hyperextension of the knee joint, and internal rotation of the tibia. However, due to genetic, joint anatomy, and immune factors, dogs frequently experience CCL degeneration, weakening, and even rupture. Tibial tuberosity advancement (TTA) is a surgical technique for treating ruptured anterior cruciate ligaments in dogs. It involves surgically moving the tibial tuberosity forward to improve the stability and function of the hind leg. The TTA plate plays a crucial role in fixation during this procedure. The TTA plate needs to be embedded in the tibia to bear the forces it needs to withstand. However, the poor mechanical properties of some TTA plates used in this technique lead to poor treatment outcomes. Utility Model Content

[0003] The purpose of this application is to provide a TTA bone plate to solve the technical problem of poor mechanical properties of TTA bone plates in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a TTA bone plate is provided, including a bone plate body and a plurality of connecting portions connected to the bone plate body. The bone plate body has a first end and a second end that are disposed opposite to each other along its height extension direction. The plurality of connecting portions are respectively located on opposite sides of the first end along a first direction. The bone plate body has a cavity and two windows that are respectively opened on opposite sides of the bone plate body along the first direction. Both windows communicate with the cavity. Each window is provided with at least two mutually intersecting support beams. At least one end of each support beam is connected to the inner wall of the window. The support beam is inclined relative to the height extension direction of the bone plate body.

[0005] In some embodiments, each window is provided with at least a first support beam and a second support beam that are intersected and connected to each other. The first support beam is located near the bottom of the window, and the opposite ends of the first support beam are respectively connected to two adjacent inner walls of the window.

[0006] In some embodiments, each window has a first inner wall and a second inner wall disposed opposite to each other along a second direction, and each window also has a third inner wall and a fourth inner wall disposed opposite to each other along a height extension direction; the height of the bone plate body increases from the first inner wall to the second inner wall, so that the fourth inner wall is curved; the opposite ends of the first support beam are respectively connected to the first inner wall and the fourth inner wall;

[0007] The first direction, the second direction, and the height extension direction of the bone plate body are all perpendicular to each other.

[0008] In some embodiments, the second support beam extends from the third inner wall to the first support beam.

[0009] In some embodiments, each window is further provided with at least one third support beam, which is cross-connected to and / or spaced apart from the second support beam.

[0010] In some embodiments, the first inner wall and the third inner wall have a first connection point, and the second inner wall and the fourth inner wall have a second connection point; the window is also provided with a third support beam, and the third support beam is cross-connected with the second support beam;

[0011] Furthermore, the third support beam extends from the first connection point to the second connection point;

[0012] Alternatively, the third support beam extends from the first inner wall or the third inner wall near the first connection point to the second inner wall or the fourth inner wall near the second connection point.

[0013] In some embodiments, a connecting beam is provided in the cavity, and the opposite ends of the connecting beam are respectively connected to the corresponding support beams in the two windows.

[0014] In some embodiments, the extending direction of the connecting beam is perpendicular to the height extending direction of the bone plate body;

[0015] Alternatively, the cavity may contain at least two intersecting connecting beams, with the extending direction of the connecting beams forming an acute or obtuse angle with the height extending direction of the bone plate body.

[0016] In some embodiments, the corresponding support beams of the two windows are symmetrically arranged and extend through the cavity along the first direction to connect with each other, so as to divide the cavity into a plurality of sub-cavities.

[0017] In some embodiments, each of the support beams within each window divides the corresponding window into multiple sub-windows, and each sub-window is filled with biomimetic trabeculae.

[0018] In some embodiments, the bone plate body has at least one first through hole on each of its opposite sides along the second direction, and the first through hole is filled with biomimetic bone trabeculae.

[0019] In some embodiments, the surface of the biomimetic trabeculae is coated with a hydroxyapatite coating.

[0020] In some embodiments, the bone plate body, the connecting portion, and the biomimetic trabecular bone are integrally formed by 3D printing.

[0021] In some embodiments, the outer surface of the bone plate body and the outer surface of the connecting portion are both coated with an antibacterial coating.

[0022] In some embodiments, the bone plate body has at least one first through hole on each of its opposite sides along the second direction; and the bone plate body has at least one second through hole on each of its opposite sides along its height extension direction.

[0023] The beneficial effects of the TTA bone plate provided in this application are as follows: By providing at least two intersecting support beams in each window along the first direction of the bone plate body, with at least one end of the support beam connected to the inner peripheral wall of the window, and the support beams being inclined relative to the height extension direction of the bone plate body, the bone plate body can not only bear the load pressure along the first direction, but also the load pressure along the second and third directions, and even the load pressure in directions forming an angle with the first, second, or third directions. This results in better mechanical properties of the TTA bone plate, thereby improving its therapeutic effect. Furthermore, by providing at least two intersecting support beams in each window, the structure of the TTA bone plate is simplified and lighter compared to solutions that use openings in the windows. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0025] Figure 1 This is a schematic diagram of the structure in which the connecting beams in the TTA rib plate are horizontally arranged, as provided in the embodiments of this application.

[0026] Figure 2 This is a top view of the TTA bone plate provided in an embodiment of this application;

[0027] Figure 3A side view of the TTA bone plate along the first direction provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the cross-shaped connecting beams in the TTA bone plate provided in the embodiments of this application;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure in which the anterior, posterior, left, and right sides of the TTA bone plate are filled with biomimetic bone trabeculae;

[0030] Figure 6 This is a schematic diagram of the structure of the support beam in the TTA bone plate, which extends from one side to the other, according to an embodiment of this application.

[0031] Figure 7 for Figure 6 A schematic diagram of a sub-cavity of the TTA bone plate filled with biomimetic bone trabeculae;

[0032] Figure 8 This is a schematic diagram of the structure of a TTA bone plate in the prior art.

[0033] The following are the labeling elements in the figure:

[0034] 100. Bone plate body; 110. Cavity; 120. Window; 121. Third inner wall; 122. Fourth inner wall; 123. First inner wall; 124. Second inner wall; 125. First connection point; 126. Second connection point; 127. Third connection point; 128. Fourth connection point; 129. Sub-window; 130. Support beam; 131. First support beam; 132. Second support beam; 133. Third support beam; 134. First intersection point; 135. Second intersection point; 140. Connecting beam; 150. Bottom plate; 160. Top plate; 161. Second through hole; 170. First side plate; 171. First through hole; 180. Second side plate; 190. Sub-cavity; 200. Bionic bone trabeculae; 300. Connecting part; X, First direction; Y, Second direction; Z, Third direction; D1, First distance; D2, Second distance. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] The anterior cruciate ligament (CCL) (known as the anterior cruciate ligament in humans) is a vital ligament in the canine knee joint, connecting the femur and tibia. It prevents the tibia from sliding forward, hyperextension of the knee joint, and internal rotation of the tibia. However, due to genetic, joint anatomy, and immune factors, dogs often experience cruciate ligament degeneration, weakening, or even rupture. Tibial tuberosity advancement (TTA) is a surgical technique for treating anterior cruciate ligament rupture in dogs. It involves surgically moving the tibial tuberosity forward to improve the stability and function of the hind leg.

[0040] The TTA bone plate plays a crucial role in fixation during TTA surgery. Specifically, during the procedure, an incision is made along the length of the tibia. The main body of the bone plate is then embedded into this incision, with the connecting portions on both sides of the plate contacting the tibial surface. These connecting portions are then secured to the tibia using screws. The cut surface of the tibia contacts the opposite surfaces of the bone plate. As the tibia heals, the two tibiae bones merge into the bone plate and grow together within it. Therefore, after surgery, the TTA bone plate, like the tibia itself, must withstand various external forces.

[0041] For ease of description, please refer to Figure 8In this application, the direction in which the bone plate body 100 is connected to multiple connecting parts 300 is defined as the first direction X, the distribution direction of the connecting parts 300 on the same side of the bone plate body 100 is defined as the second direction Y, and the height extension direction of the bone plate body 100 is defined as the third direction Z. Furthermore, for more detailed explanation, the first direction X can be defined as the left-right direction of the bone plate body 100, the second direction Y as the front-back direction of the bone plate body 100, and the third direction Z as the height extension direction of the bone plate body 100.

[0042] In related technologies, TTA bone plates have poor mechanical properties, resulting in poor therapeutic effects. Specifically, in these TTA bone plates, the internal through-holes and grooves extend along a third direction (Z), that is, along the height of the bone plate body 100. With this structural design, the bone plate body 100 can barely bear pressure if applied only in the first direction (X) and the third direction (Z). However, if pressure is applied along the second direction (Y) or other directions, the load-bearing capacity of the TTA bone plate is limited, ultimately leading to poor therapeutic effects.

[0043] To address the aforementioned issues, the inventors of this application comprehensively analyzed various load-bearing pressure conditions that the TTA bone plate would face and conducted numerous stress analysis experiments, ultimately designing a TTA bone plate with improved mechanical properties. Specifically, firstly, the inventors simulated applying a force along the first direction X to the bone plate body 100, thereby obtaining a first ideal frame for the bone plate body 100 under these conditions. This first ideal frame shows that most of the internal area of ​​the bone plate body 100 is removable. Next, the inventors simulated applying pressure along the second direction Y, the third direction Z, and multiple inclined directions perpendicular to the first direction X to the bone plate body 100, thereby obtaining a second ideal frame for the bone plate body 100 under these conditions. This second ideal frame shows that the bone plate body 100 requires cross-support beams 130 internally. Finally, by combining the simulated structures of the load-bearing pressure in each direction, the first ideal frame and the second ideal frame are superimposed to obtain the final frame that the bone plate body 100 needs to be configured to achieve better mechanical properties. Furthermore, to comprehensively consider the mechanical properties of the TTA plate under complex working conditions, it is necessary to conduct simulation analysis of the stress on each structural surface of the TTA plate and simulation analysis of the TTA plate under various motion conditions. Combining all the above optimization analyses, a preliminary design framework is obtained. Considering the convenience of product manufacturing, packaging, transportation, and use, the optimal product form combined with the TTA plate is finally designed, so that the TTA plate not only has better mechanical properties but is also convenient to use and process.

[0044] Please see Figures 1 to 3 The TTA bone plate provided in the embodiments of this application will now be described in detail.

[0045] The TTA bone plate includes a bone plate body 100 and a plurality of connecting portions 300 connected to the bone plate body 100. The bone plate body 100 has a first end and a second end that are disposed opposite to each other along its height extension direction. The plurality of connecting portions 300 are respectively located on opposite sides of the first end along the first direction X. The bone plate body 100 has a cavity 110 and two windows 120 respectively opened on opposite sides of the bone plate body 100 along the first direction X. Both windows 120 are in communication with the cavity 110. Each window 120 is provided with at least two mutually intersecting support beams 130. At least one end of the support beam 130 is connected to the inner peripheral wall of the window 120. The support beam 130 is inclined relative to the height extension direction of the bone plate body 100.

[0046] In addition, the two intersecting support beams 130 can be connected in a cross shape or in a T shape.

[0047] At least one end of the support beam 130 is connected to the inner peripheral wall of the window 120. This can be either that both ends of the support beam 130 are connected to the inner peripheral wall of the window 120, or that one end of the support beam 130 is connected to the inner peripheral wall of the window 120 while the other end of the window 120 is connected to other support beams 130, or that the support beam 130 is suspended.

[0048] The support beam 130 is inclined relative to the height extension direction of the main body 100 of the skeleton plate, that is, the support beam 130 is inclined relative to the third direction Z. This inclination can be forward or backward. In addition, the angle of inclination can be greater than 0 degrees and less than 90 degrees.

[0049] The TTA bone plate provided in this application embodiment has at least two intersecting support beams 130 in each window 120 along the first direction X of the bone plate body 100. At least one end of the support beam 130 is connected to the inner peripheral wall of the window 120. The support beam 130 is inclined relative to the height extension direction of the bone plate body 100. This allows the bone plate body 100 to bear not only the load pressure along the first direction X, but also the load pressure along the second direction Y and the third direction Z, and even the load pressure in directions that form an angle with the first direction X, the second direction Y, or the third direction Z. This results in better mechanical properties of the TTA bone plate and thus better therapeutic effects. Furthermore, by providing at least two intersecting support beams 130 in each window 120, the structure of the TTA bone plate is simplified and lighter compared to a solution that involves opening holes in the window 120.

[0050] In some embodiments, please refer to Figure 1 and Figure 3Each window 120 is provided with at least a first support beam 131 and a second support beam 132 that are intersected and connected to each other. The first support beam 131 is located near the bottom of the window 120, and the two opposite ends of the first support beam 131 are respectively connected to the two adjacent inner walls of the window 120.

[0051] For details, please refer to Figure 3 The two opposite ends of the first support beam 131 are respectively connected to the two adjacent inner walls of the window 120. The two opposite ends of the first support beam 131 can be connected to the bottom inner wall and the front inner wall of the window 120 respectively, or the two opposite ends of the first support beam 131 can be connected to the bottom inner wall and the rear inner wall of the window 120 respectively.

[0052] The above configuration makes the bottom foundation of the bone plate body 100 more solid and stable. Combined with the second support beam 132 which is cross-connected with the first support beam 131, it can enhance the mechanical properties of the entire bone plate body 100, thereby improving the mechanical properties of the TTA bone plate.

[0053] For some specific embodiments, please refer to Figure 1 Each window 120 has a first inner wall 123 and a second inner wall 124 arranged opposite each other along the second direction Y, and each window 120 has a third inner wall 121 and a fourth inner wall 122 arranged opposite each other along the height extension direction; the height of the bone plate body 100 increases from the first inner wall 123 to the second inner wall 124, so that the fourth inner wall 122 is curved; the opposite ends of the first support beam 131 are respectively connected to the first inner wall 123 and the fourth inner wall 122. The first direction X, the second direction Y, and the height extension direction of the bone plate body 100 are all perpendicular to each other.

[0054] The first support beam 131 is connected to the first inner wall 123 and the fourth inner wall 122 at its two ends respectively. In other words, the first support beam 131 is supported between the side wall and bottom wall of the bone plate body 100, which are relatively low in height, so as to improve the bottom support strength of the TTA bone plate and ensure the connection strength between the TTA bone plate and the tibia.

[0055] In some embodiments, please refer to Figure 3The main body 100 of the bone plate includes a bottom plate 150, a top plate 160, a first side plate 170, and a second side plate 180. The bottom plate 150 and the top plate 160 are disposed opposite each other, and the first side plate 170 and the second side plate 180 are disposed opposite each other. The first side plate 170 extends from one end of the bottom plate 150 to one end of the top plate 160, and the second side plate 180 extends from the other end of the bottom plate 150 to the other end of the top plate 160. The height of the second side plate 180 is higher than the height of the first side plate 170. The first side plate 170, the second side plate 180, the bottom plate 150, and the top plate 160 together enclose the cavity 110. The two connecting portions 300 are respectively connected to the opposite sides of the bottom plate 150 along the first direction X. The first inner wall 123 is the inner wall of the first side plate 170, the second inner wall 124 is the inner wall of the second side plate 180, the third inner wall 121 is the inner wall of the top plate 160, and the fourth inner wall 122 is the inner wall of the bottom plate 150.

[0056] In some embodiments, please refer to Figure 3 The second inner wall 124 and the fourth inner wall 122 have a second connection point 126, the first inner wall 123 and the fourth inner wall 122 have a third connection point 127, and the first support beam 131 and the fourth inner wall 122 have a fourth connection point 128. There is a first distance D1 between the third connection point 127 and the fourth connection point 128, and a second distance D2 between the third connection point 127 and the second connection point 126. The first distance D1 is less than half of the second distance D2. This arrangement ensures that the first support beam 131 is positioned as close as possible to the front of the bone plate body 100, guaranteeing that the bottom bearing capacity of the TTA bone plate can be distributed according to the stress conditions.

[0057] In some embodiments, please refer to Figure 3 The triangular structure formed by the first inner wall 123, the fourth inner wall 122, and the first support beam 131 is a hollow structure. This design ensures the mechanical properties of the TTA bone plate while minimizing weight. Understandably, in other embodiments of this application, the triangular structure formed by the first inner wall 123, the fourth inner wall 122, and the first support beam 131 can also be a solid structure, which not only enhances the mechanical properties of the TTA bone plate but also reduces the processing difficulty of the TTA bone plate.

[0058] In some embodiments, please refer to Figure 1 and Figure 3The connecting portion 300 extends from the right side of the base plate 150 to a first position A1 near the front side. The length of the connecting portion 300 along the second direction Y is less than the length of the base plate 150 along the second direction Y. Furthermore, the third distance from the first position A1 to the third connection point 127 is less than the first distance D1. This arrangement ensures that the connecting portion 300 at least partially overlaps with the first support beam 131 along the second direction Y, thereby guaranteeing the bottom structural strength of the entire TTA bone plate and improving its mechanical properties.

[0059] In some embodiments, please refer to Figure 1 and Figure 3 The second support beam 132 extends from the third inner wall 121 to the first support beam 131.

[0060] Specifically, the first support beam 131 extends from the first inner wall 123 to the fourth inner wall 122, and the second support beam 132 extends from the third inner wall 121 to the first support beam 131. The first support beam 131 and the second support beam 132 are cross-connected. The first support beam 131 and the second support beam 132 form a T-shaped structure. The first support beam 131 makes the front chassis of the entire bone plate body 100 solid and stable. The second support beam 132 extends backward and upward from the first support beam 131 to the third inner wall 121, which can support the bone plate body 100 backward and upward, thereby forming a stable and solid skeleton that can bear pressure loads in all directions and has high mechanical performance.

[0061] In some embodiments, please refer to Figure 1 and Figure 3 Each window 120 also has at least one third support beam 133, which is cross-connected and / or spaced apart from the second support beam 132.

[0062] The number of third support beams 133 can be one, two, three or more.

[0063] The third support beam 133 is cross-connected and / or spaced apart from the second support beam 132, including the following three cases: all third support beams 133 are cross-connected to the second support beam 132; all third support beams 133 are spaced apart from the second support beam 132; some third support beams 133 are cross-connected to the second support beam 132, and another part of the third support beams 133 are spaced apart from the second support beam 132.

[0064] The third support beam 133 and the second support beam 132 are intersected, which can be a cross-shaped intersecting connection or a T-shaped intersecting connection; the third support beam 133 and the second support beam 132 are spaced apart, which can be parallel to each other and spaced apart, or they can be non-parallel to each other and spaced apart.

[0065] In this embodiment, the presence of at least one third support beam 133 further enhances the compressive strength of the TTA bone plate and improves its mechanical properties.

[0066] In some embodiments, please refer to Figure 1 and Figure 3 The first inner wall 123 and the third inner wall 121 have a first connection point 125, and the second inner wall 124 and the fourth inner wall 122 have a second connection point 126; the window 120 is also provided with a third support beam 133, and the third support beam 133 extends from the first connection point 125 to the second connection point 126, and the third support beam 133 and the second support beam 132 are cross-connected.

[0067] The aforementioned third support beam 133 enhances the compressive strength of the TTA bone plate along a direction parallel to or inclined to the third support beam 133, thereby improving the mechanical properties of the TTA bone plate. Understandably, in other embodiments of this application, the front end of the third support beam 133 may not be connected to the first connection point 125, but rather to the third inner wall 121 or the first inner wall 123 of the window 120 near the first connection point 125; the rear end of the third support beam 133 may not be connected to the second connection point 126, but rather to the fourth inner wall 122 or the second inner wall 124 of the window 120 near the second connection point 126. That is, the third support beam 133 extends from the first inner wall 123 or the third inner wall 121 near the first connection point 125 to the second inner wall 124 or the fourth inner wall 122 near the second connection point 126. This is not a unique limitation.

[0068] In some embodiments, please refer to Figure 1 Two windows 120 symmetrically arranged on opposite sides along the first direction X are each provided with at least two mutually intersecting support beams 130; a connecting beam 140 is provided in the cavity 110, and the opposite ends of the connecting beam 140 are respectively connected to the corresponding support beams 130 in the two windows 120.

[0069] In actual design, the support beam 130 can be set in one window 120 or both windows 120 can be set with support beams 130, depending on the width of the bone plate body 100 along the first direction X. In addition, when the width of the bone plate body 100 along the first direction X is further increased, a connecting beam 140 can be set in the cavity 110 to connect the support beams 130 on both sides, so as to further improve the load-bearing capacity of the bone plate body 100.

[0070] In this application, the connecting beam 140 can be used to connect the two supporting beams 130.

[0071] As an example, please see Figure 1 The connecting beam 140 extends perpendicularly to the height extension direction of the main body 100 of the bone plate, meaning the connecting beam 140 is horizontally positioned. In this example, the TTA bone plate can be manufactured using machining or additive manufacturing (i.e., 3D printing). When the TTA bone plate is 3D printed, because the connecting beam 140 is horizontally positioned, a support structure needs to be installed from the bottom during the printing process to prevent the TTA bone plate from collapsing during processing. After printing, this support structure is removed using a specific process.

[0072] As another example, see Figure 4 The extending direction of the connecting beam 140 forms an acute or obtuse angle with the height extending direction of the main body 100 of the bone plate, meaning that the connecting beam 140 is inclined relative to the horizontal direction. In this example, the TTA bone plate can be manufactured by machining or by additive manufacturing (i.e., 3D printing). When the TTA bone plate is 3D printed, the inclined setting of the connecting beam 140 relative to the horizontal direction meets the requirements of 3D printing, eliminating the need for a support structure and avoiding the problem of difficult removal of the added support structure during post-processing.

[0073] In some embodiments, please refer to Figure 4 The cavity 110 contains at least two intersecting connecting beams 140, with the extending directions of the connecting beams 140 forming acute or obtuse angles with the height direction of the bone plate body 100. By providing two intersecting connecting beams 140, multiple triangles can be formed between the two side support beams 130, thereby ensuring the structural stability of the two side support beams 130 and the middle connecting beam 140. Of course, in other embodiments, the connecting beams 140 may not intersect.

[0074] For some specific embodiments, please refer to Figure 4Each of the two windows 120, symmetrically arranged on opposite sides along the first direction X, is provided with a first support beam 131, a second support beam 132, and a third support beam 133. The first support beam 131 connects the first inner wall 123 and the fourth inner wall 122. The second support beam 132 extends from the third inner wall 121 to the first support beam 131, and the third support beam 133 extends from the first connection point 125 to the second connection point 126. The support beams 130 of the two windows 120 overlap along the first direction X. Assuming the first support beam 131 and the second support beam 132 have a first intersection point 134, and the second support beam 132 and the third support beam 133 have a second intersection point 135, then one connecting beam 140 extends from the first intersection point 134 on one side to the second intersection point 135 on the other side, and the other connecting beam 140 extends from the second intersection point 135 on one side to the first intersection point 134 on the other side. This embodiment ensures the structural strength of the connection between the connecting beam 140 and the supporting beam 130 by connecting the intersection points of the two supporting beams 130. Of course, in other embodiments, the connecting beam 140 can also be connected at non-intersection points of the two supporting beams 130, and this is not the only possible connection.

[0075] In some embodiments, please refer to Figure 1 and Figure 3 The bone plate body 100 has at least one first through hole 171 on each of its opposite sides along the second direction Y; the bone plate body 100 also has at least one second through hole 161 on each of its opposite sides along its height extension direction. The arrangement of each first through hole 171 and each second through hole 161 enables the bone plate body 100 to reduce weight while ensuring high mechanical performance, making it easier to transport and carry.

[0076] The number of first through holes 171 can be one or more, depending on the area of ​​the corresponding side of the bone plate body 100. The area of ​​each first through hole 171 can also be determined based on the stress on the bone plate body 100. For example, if the front area is smaller, a smaller number of first through holes 171 can be provided, and the area of ​​each first through hole 171 will be relatively small; if the rear area is larger, a larger number of first through holes 171 can be provided. The size of each first through hole 171 varies depending on its position.

[0077] The number of second through holes 161 can be one or more, depending on the area of ​​the corresponding side of the bone plate body 100. The area of ​​the second through holes 161 can also be determined based on the stress on the bone plate body 100. For example, two second through holes 161 can be provided on the top side, with a relatively large area. Two second through holes 161 can be provided on the bottom side, with a relatively large area.

[0078] Optionally, the shape of the first through hole 171 can be circular, square, triangular, elliptical, or a combination of shapes, wherein the combination shape is a closed shape formed by straight lines and / or curves.

[0079] Optionally, the shape of the second through hole 161 can be circular, square, triangular, elliptical, or a combination of shapes, wherein the combination shape is a closed shape formed by straight lines and / or curves.

[0080] In some embodiments, please refer to Figure 3 and Figure 5 Each support beam 130 within each window 120 divides the corresponding window 120 into multiple sub-windows 129, and each sub-window 129 is filled with biomimetic bone trabeculae 200.

[0081] The biomimetic trabecular bone 200 is a porous structure. Specifically, it is an irregular porous structure that is automatically drawn and filled within the sub-window 129 using an algorithm during the bone plate design. It can be integrally formed with the main body 100 of the bone plate through 3D printing. The design of the biomimetic trabecular bone 200 in this embodiment can achieve bone ingrowth and bone integration effects.

[0082] In some embodiments, please refer to Figure 1 and Figure 5 The bone plate body 100 has at least one first through hole 171 on each of its opposite sides along the second direction Y. Each sub-window 129 and each first through hole 171 is filled with biomimetic bone trabeculae 200. In practical applications, the bone plate body 100 needs to be inserted into the gap of the musculoskeletal incision. The bone plate body 100 is in contact with the tibia on both opposite sides along the first direction X and the second direction Y. By filling each sub-window 129 and each first through hole 171 with biomimetic bone trabeculae 200, the tibia can grow into the cavity 110 through each filling hole and each first through hole 171, and bone integration can occur within the cavity 110. In addition, in this embodiment, by not setting the bionic bone trabeculae 200 at the second through hole 161, on the one hand, since the bottom and top sides of the bone plate body 100 will not come into contact with the tendons and bones, there is no need to set the bionic bone trabeculae 200; on the other hand, since the bionic bone trabeculae 200 will generate a lot of dust when processed by 3D printing, the bone plate body 100 can be cleaned through the second through hole 161.

[0083] In some embodiments, the bone plate body 100, the connecting portion 300, and the biomimetic trabecular bone 200 are integrally formed by 3D printing. Specifically, the TTA bone plate is integrally formed by 3D printing using titanium-based materials.

[0084] Specifically, the titanium-based material can be pure titanium or a titanium alloy, thereby improving the integration of the TTA bone plate with the organism. Understandably, in other embodiments, cobalt material can also be used for 3D printing to form the TTA bone plate to enhance its structural strength; this is not the only applicable method.

[0085] In some embodiments, the surface of the biomimetic trabeculae 200 is coated with a hydroxyapatite coating. To further improve the permanent fixation effect of the TTA bone plate on bone tissue after implantation, this embodiment coats the sides of the biomimetic trabeculae 200 with a hydroxyapatite coating to enhance the bio-osseointegration effect.

[0086] In some embodiments, the outer surface of the bone plate body 100 and the outer surface of the connecting portion 300 are coated with an antibacterial coating, that is, the entire outer surface of the TTA bone plate is coated with an antibacterial coating, thereby enhancing the infection prevention effect of the TTA bone plate after implantation.

[0087] Alternatively, the antimicrobial coating may be a polymer antimicrobial coating, a hydrophobic material antimicrobial coating, a silver ion antimicrobial coating, or other antimicrobial material coatings that can be applied in vivo.

[0088] In other embodiments of this application, please refer to Figure 6 The corresponding support beams 130 of the two windows 120 are symmetrically arranged and extend through the cavity 110 along the first direction X, connecting with each other to divide the cavity 110 into multiple sub-cavities 190. In this embodiment, the support beams 130 on both sides of the bone plate body 100 are integrally connected, eliminating the need for a connecting beam 140 in the middle. This arrangement not only further enhances the mechanical properties of the entire TTA bone plate but also allows the cavity 110 to be divided into multiple sub-cavities 190 through the support beams 130. In clinical use, biomimetic bone trabeculae 200, autologous bone of the patient, allogeneic bone, and artificial bone can be filled into each sub-cavity 190 to enhance the bio-bone integration effect.

[0089] In practical applications, one, two, three, or all sub-cavities 190 can be filled according to the patient's actual needs. For example, please refer to... Figure 7 Each of the four sub-cavities 190 near the front is filled with biomimetic bone trabeculae 200, and the relatively larger sub-cavity 190 near the right is filled with the patient's autologous bone, allogeneic bone, and artificial bone to enhance the bio-bone integration effect. Additionally, in this case, biomimetic bone trabeculae 200 can also be filled in the second through-hole 161.

[0090] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A TTA bone plate, characterized in that, The device includes a bone plate body (100) and a plurality of connecting portions (300) connected to the bone plate body (100). The bone plate body (100) has a first end and a second end that are disposed opposite to each other along its height extension direction. The plurality of connecting portions (300) are respectively located on opposite sides of the first end along a first direction (X). The bone plate body (100) has a cavity (110) and two windows (120) respectively opened on opposite sides of the bone plate body (100) along the first direction (X). Both windows (120) are in communication with the cavity (110). Each window (120) is provided with at least two mutually intersecting support beams (130). At least one end of the support beam (130) is connected to the inner wall of the window (120). The support beam (130) is inclined relative to the height extension direction of the bone plate body (100).

2. The TTA bone plate as described in claim 1, characterized in that, Each of the windows (120) is provided with at least a first support beam (131) and a second support beam (132) that are intersecting each other. The first support beam (131) is located near the bottom of the window (120), and the opposite ends of the first support beam (131) are respectively connected to two adjacent inner walls of the window (120).

3. The TTA bone plate as described in claim 2, characterized in that, Each of the windows (120) has a first inner wall (123) and a second inner wall (124) arranged opposite each other along a second direction (Y), and each of the windows (120) also has a third inner wall (121) and a fourth inner wall (122) arranged opposite each other along a height extension direction; the height of the bone plate body (100) increases from the first inner wall (123) to the second inner wall (124) so ​​that the fourth inner wall (122) is curved; the opposite ends of the first support beam (131) are respectively connected to the first inner wall (123) and the fourth inner wall (122); The first direction (X), the second direction (Y), and the height extension direction of the bone plate body (100) are all perpendicular to each other.

4. The TTA bone plate as described in claim 3, characterized in that, The second support beam (132) extends from the third inner wall (121) to the first support beam (131).

5. The TTA bone plate as described in claim 4, characterized in that, Each of the windows (120) is also provided with at least one third support beam (133), which is cross-connected and / or spaced apart from the second support beam (132).

6. The TTA bone plate as described in claim 4, characterized in that, The first inner wall (123) and the third inner wall (121) have a first connection point (125), and the second inner wall (124) and the fourth inner wall (122) have a second connection point (126); the window (120) is also provided with a third support beam (133), and the third support beam (133) and the second support beam (132) are cross-connected; Furthermore, the third support beam (133) extends from the first connection point (125) to the second connection point (126); Alternatively, the third support beam (133) extends from the first inner wall (123) or the third inner wall (121) near the first connection point (125) to the second inner wall (124) or the fourth inner wall (122) near the second connection point (126).

7. The TTA bone plate according to any one of claims 1 to 6, characterized in that, The cavity (110) is provided with a connecting beam (140), and the two ends of the connecting beam (140) are respectively connected to the corresponding support beams (130) in the two windows (120).

8. The TTA bone plate as described in claim 7, characterized in that, The extension direction of the connecting beam (140) is perpendicular to the height extension direction of the bone plate body (100); Alternatively, the cavity (110) may be provided with at least two intersecting connecting beams (140), and the extending direction of the connecting beams (140) may form an acute or obtuse angle with the height extending direction of the bone plate body (100).

9. The TTA bone plate according to any one of claims 1 to 6, characterized in that, The corresponding support beams (130) of the two windows (120) are symmetrically arranged and extend through the cavity (110) along the first direction (X) to connect with each other, so as to divide the cavity (110) into a plurality of sub-cavities (190).

10. The TTA bone plate according to any one of claims 1 to 6, characterized in that, Each of the support beams (130) within each window (120) divides the corresponding window (120) into a plurality of sub-windows (129), each of the sub-windows (129) being filled with biomimetic bone trabeculae (200).

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