Medial malleolus compression locking hook plate

Abstract

The utility model relates to the technical field of orthopedic medical apparatus and instruments, concretely to a medial malleolus pressurization locking hook bone plate, including medial malleolus skeleton and bone plate body, the bone plate body is installed on the outer surface of medial malleolus skeleton, the inside of bone plate body is sequentially provided with locking pressurization hole, lower tibiofibular syndesmosis fixed passageway, horizontal locking hole and medial malleolus pressurization hole from top to bottom, the locking pressurization hole is provided with two groups, the locking pressurization hole and locking pressurization screw are mutually adapted. The utility model is introduced with loop steel sheet through the retrograde turning hole of lower tibiofibular syndesmosis fixed passageway, and the lower tibiofibular syndesmosis is fixed, the medial malleolus fracture in medial malleolus skeleton is stably fixed, and the whole stable effect is good, and the above-mentioned fixed design can make the medial malleolus fracture convenient for restoring the original medial malleolus anatomical form, and the design of rear hill hook and front hill hook can support the distal end of medial malleolus skeleton, and the fitting effect with medial malleolus skeleton is good.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical device technology, specifically to a medial malleolus pressure locking hook bone plate. Background Technology

[0002] Medial malleolus fracture refers to the interruption of the integrity or continuity of the medial malleolus bone. It is mostly caused by external force and requires timely diagnosis and treatment to promote healing and functional recovery. Medial malleolus fracture is caused by direct or indirect external force acting on the ankle, which will cause stress concentration at the medial malleolus, exceeding its bearing limit and causing fracture.

[0003] In response, Chinese Patent Application Publication No. CN219397518U discloses a plate-loop anchor internal fixation system for distal tibiofibular syndesmosis injuries complicated with ankle fractures, belonging to the field of medical device technology. It includes a bone plate located on one side of the fibula, with multiple pressure holes arranged along its length. Pressure screws threaded onto the fibula are inserted into these pressure holes. The bone plate also has loop mounting holes and locking holes, with locking screws for fixing the bone plate inserted into the locking holes. The system further includes a loop plate, a loop ring, and anchors. In use, the loop plate is fixed to the bone plate on the fibula side, achieving fibular fracture fixation. The loop plate and anchors are flexibly connected by an adjustable loop ring, achieving elastic fixation of the distal tibiofibular syndesmosis, maintaining the micro-motion characteristics of distal tibiofibular syndesmosis fixation. The system is functionally complete and highly practical.

[0004] In response, Chinese Patent Application Publication No. CN104248466B discloses a lateral malleolus bone plate, comprising a long strip-shaped main plate and a first and second wing plate integrally formed on one side of the main plate near its end. The main plate is composed of a first plate, a second plate, and a third plate connected sequentially. The first plate has 2-6 locking pressure holes and a first pinhole; the second plate has a locking pressure sliding hole and a first locking hole; the third plate has a second locking hole and a third locking hole. A circular universal joint plate is formed at the end of the first wing plate, with a universal locking hole in the center; a circular locking hole plate is formed at the end of the second wing plate, with a fifth locking hole in the center. The axes of the locking holes are not parallel. The main plate, in conjunction with the two wing plates, ensures that the bone plate does not shift between itself and the lateral malleolus, facilitating faster recovery for the patient and ensuring treatment effectiveness.

[0005] For comminuted compression fractures of the medial malleolus, and for elderly patients with severe osteoporosis, there are limited options for internal fixation devices. Relying solely on cannulated screws for fixation results in uncertain stability, and intraoperative reduction lacks clear anatomical landmarks. Existing medial malleolus fixation plates cannot meet the requirements for early weight-bearing activities. Therefore, existing medial malleolus fixation plates are insufficient to restore the original anatomical shape of the medial malleolus and provide satisfactory stability for the above types of medial malleolus fractures. Thus, improving and refining these solutions is an urgent problem to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a medial malleolus compression locking hook plate to solve the problems in the background art where there are few internal fixation options for comminuted and compressive medial malleolus fractures, as well as for elderly patients with severe osteoporosis. These patients often rely solely on cannulated screws for fixation, which results in uncertain stability. Furthermore, there are no clear anatomical landmarks for intraoperative reduction, and existing medial malleolus fixation plates cannot meet the requirements for early weight-bearing activities. Therefore, existing medial malleolus plates are unable to restore the original anatomical shape of the medial malleolus and provide satisfactory stability for the aforementioned types of medial malleolus fractures.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a medial malleolus compression locking hook bone plate, comprising a medial malleolus bone and a bone plate body. The bone plate body is installed on the outer surface of the medial malleolus bone. The interior of the bone plate body is provided with a locking compression hole, a distal tibiofibular syndesmosis fixation channel, a horizontal locking hole, and a medial malleolus compression hole in sequence from top to bottom. Two sets of locking compression holes are provided. The locking compression holes are compatible with locking compression screws, and the horizontal locking holes are compatible with horizontal locking screws.

[0008] Anterior malleolus hook, which is installed on the lower end surface of the bone plate body, and posterior malleolus hook is provided on the outer surface of the medial malleolus bone;

[0009] The anterior and posterior hooks have the same structure. The locking and pressure hole is divided into a locking screw hole and a pressure screw hole, which can be drilled and screwed into the pressure screw and locking screw. The distal tibiofibular syndesmosis fixation channel has a distal tibiofibular screw direction thread, which can be screwed onto the guide to perform retrograde drilling and introduce the distal tibiofibular syndesmosis fixation device (such as a plate with loop).

[0010] The horizontal locking holes are divided into sagittal forward, backward and parallel locking holes, all of which are parallel to the ankle joint direction in the cross section and can be screwed in with locking screws.

[0011] The medial malleolus compression hole is a compression hole parallel to the medial malleolus joint surface, and a medial malleolus compression screw can be screwed in.

[0012] The bone plate body is made of implantable metal.

[0013] Preferably, the locking compression screw, the horizontal locking screw, and the medial malleolar compression screw are all mounted on the bone plate body and screwed into the interior of the medial malleolar bone.

[0014] Preferably, the locking and pressurizing screw has a screw diameter of 3.5 mm, and the lower tibia and fibula joint fixation channel has a lower tibia and fibula screw direction thread, which can be screwed onto the guide to perform reverse drilling and introduce a lower tibia and fibula internal fixation object, such as a steel plate with a loop.

[0015] Preferably, there are six sets of horizontal locking holes and horizontal locking screws, and the diameter of the horizontal locking screws is 2.7 mm.

[0016] Preferably, the medial malleolus compression hole and the medial malleolus compression screw are mutually compatible, and the diameter of the medial malleolus compression screw is 2.7 mm.

[0017] Preferably, both the anterior and posterior malleolar hooks are in contact with the anterior and posterior malleoli of the medial malleolus.

[0018] Preferably, the locking compression screw, the horizontal locking screw, and the medial malleolar compression screw are all made of implantable metal material.

[0019] Preferably, the cross-section of the distal tibiofibular joint fixation channel is on the vertical line of the center of the distal tibiofibular joint.

[0020] Preferably, the cross-section of the horizontal locking screw is parallel to the horizontal screws in different directions of the joint surface, and the direction of the medial malleolus compression screw is parallel to the medial malleolus joint surface.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This medial malleolus compression locking hook plate, after successful fracture reduction, hooks the posterior and anterior malleolus hooks at the anterior and posterior malleoli of the medial malleolus bone. The plate body is then attached to the cortical bone of the lateral medial malleolus bone. Locking compression screws and medial malleolus compression screws are screwed into the locking compression holes and medial malleolus compression holes, respectively. Finally, horizontal locking screws are screwed in sequentially through the horizontal locking holes to measure the depth. If there is a concomitant distal tibiofibular syndesmosis injury, a looped plate can be introduced through the retrograde hole of the distal tibiofibular syndesmosis fixation channel for distal tibiofibular syndesmosis fixation. This design provides stable fixation of the medial malleolus fracture, with good overall stability. The above fixation design facilitates the restoration of the original medial malleolus anatomical shape at the fracture site. At the same time, the design of the posterior and anterior malleolus hooks provides support for the distal end of the medial malleolus bone and has a good fit with the medial malleolus bone. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0024] Figure 2 This utility model Figure 1 Side view of the structure;

[0025] Figure 3 This is a three-dimensional schematic diagram of the bone plate body structure of this utility model;

[0026] Figure 4 This is a second-view schematic diagram of the bone plate body structure of this utility model;

[0027] Figure 5 This is a three-dimensional schematic diagram of the medial malleolus bone and the main body structure of the bone plate of this utility model;

[0028] Figure 6 This utility model Figure 5 A second-view diagram of the structure.

[0029] In the diagram: 1. Medial malleolus bone; 2. Bone plate body; 3. Locking compression hole; 4. Tibiofibular syndesmosis fixation channel; 5. Horizontal locking hole; 6. Medial malleolus compression hole; 7. Anterior malleolus hook; 8. Posterior malleolus hook; 9. Locking compression screw; 10. Horizontal locking screw; 11. Medial malleolus compression screw. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-6 One embodiment provided by this utility model:

[0032] The medial malleolus compression locking hook bone plate includes a medial malleolus bone 1 and a bone plate body 2. The bone plate body 2 is installed on the outer surface of the medial malleolus bone 1. The bone plate body 2 has a locking compression hole 3, a distal tibiofibular syndesmosis fixation channel 4, a horizontal locking hole 5 and a medial malleolus compression hole 6 arranged sequentially from top to bottom inside. There are two sets of locking compression holes 3. The locking compression holes 3 are compatible with locking compression screws 9, and the horizontal locking holes 5 are compatible with horizontal locking screws 10.

[0033] Anterior hook 7 is installed on the lower end surface of the bone plate body 2, and posterior hook 8 is provided on the outer surface of the medial malleolus bone 1.

[0034] The anterior hook 7 and posterior hook 8 have the same structure. The locking and compression hole 3 is divided into a locking screw hole and a compression screw hole, which can be drilled and screwed into the compression screw and locking screw. The distal tibia and fibula syndesmosis fixation channel 4 can be rotated in reverse to introduce the distal tibia and fibula syndesmosis fixation device (such as a plate with loop).

[0035] The horizontal locking holes are divided into sagittal anterior, posterior, and parallel locking holes, all of which are parallel to the ankle joint direction in the cross section and can be screwed in with locking screws.

[0036] The medial malleolus compression hole 6 is a compression hole parallel to the medial malleolus joint surface, which can be screwed into the medial malleolus compression screw 11;

[0037] The bone plate body 2 is made of implantable metal. After the fracture is successfully reduced, the anterior and posterior hooks 7 and 8 are hooked onto the anterior and posterior hemispheres of the medial malleolus bone 1. The bone plate body 2 is then attached to the cortical bone of the lateral medial malleolus bone. Locking compression screws 9 and 11 are screwed into the locking compression hole 3, medial malleolus compression hole 6, and medial malleolus compression screw 11, respectively. Finally, the horizontal locking screw 11 is screwed into the horizontal locking hole 5 by rotating the hole to measure the depth. If there is a concomitant tibiofibular syndesmosis injury, a looped plate can be introduced through the reverse rotation hole of the tibiofibular syndesmosis fixation channel 4 for fixation of the tibiofibular syndesmosis. This design provides stable fixation of the medial malleolus fracture, with good overall stability. The fixation design allows the medial malleolus fracture site to easily restore its original anatomical shape. At the same time, the design of the posterior and anterior hooks 8 and 7 provides support for the distal end of the medial malleolus bone and provides good fit with the medial malleolus bone.

[0038] The locking compression screw 9, the horizontal locking screw 10, and the medial malleolus compression screw 11 are all installed on the bone plate body 2 and screwed into the interior of the medial malleolus bone 1.

[0039] The locking pressure screw 9 has a screw diameter of 3.5mm. The lower tibia and fibula joint fixation channel 4 has a lower tibia and fibula screw direction thread. The guide can be screwed on the screw to perform reverse drilling and introduce the lower tibia and fibula internal fixation device, such as a steel plate with a loop.

[0040] Both the horizontal locking hole 5 and the horizontal locking screw 10 are provided with six sets, and the diameter of the horizontal locking screw 10 is 2.7mm.

[0041] The medial malleolus compression hole 6 and the medial malleolus compression screw 11 are mutually compatible, and the diameter of the medial malleolus compression screw 11 is 2.7mm.

[0042] Both the anterior and posterior malleoli hooks 7 and 8 are attached to the anterior and posterior malleoli of the medial malleolus.

[0043] The locking compression screw 9, the horizontal locking screw 10, and the medial malleolus compression screw 11 are all made of implantable metal materials.

[0044] The cross-section of the distal tibiofibular syndesmosis fixation channel 4 is perpendicular to the center of the line connecting the distal tibiofibular joint. The cylindrical upright rod in the distal tibiofibular syndesmosis fixation channel 4 can visually show the approximate location of the distal tibiofibular fixation channel, as shown below. Figure 6 .

[0045] The horizontal locking screw 10 has a cross-section parallel to the articular surface in different directions, while the medial malleolus compression screw 11 is parallel to the medial malleolus articular surface.

[0046] Working principle: In use, after the fracture is successfully reduced, the anterior and posterior hooks 7 and 8 are hooked onto the anterior and posterior hemispheres of the medial malleolus bone 1. The bone plate body 2 is attached to the cortical bone of the lateral medial malleolus bone. Locking and compression screws 9 and 11 are screwed into the locking compression hole 3, the distal tibiofibular syndesmosis fixation channel 4, and the medial malleolus compression hole 6, respectively. Finally, horizontal locking screws 10 are screwed into the horizontal locking hole 5 by rotating the hole to measure the depth. If there is a combined distal tibiofibular syndesmosis injury, the plate with loop can be introduced by rotating the hole in reverse through the distal tibiofibular syndesmosis fixation channel 4 for distal tibiofibular syndesmosis fixation. The above is the working principle of this utility model.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A medial malleolus compression locking hook bone plate comprising a medial malleolus bone (1) and a bone plate body (2), characterized in that: The bone plate body (2) is installed on the outer surface of the medial malleolus bone (1). The bone plate body (2) is provided with locking pressure holes (3), distal tibiofibular syndesmosis fixation channel (4), horizontal locking holes (5) and medial malleolus pressure holes (6) from top to bottom. There are two sets of locking pressure holes (3). The locking pressure holes (3) are compatible with locking pressure screws (9). The horizontal locking holes (5) are compatible with horizontal locking screws (10). Anterior ankle hook (7) is installed on the lower end surface of the bone plate body (2), and posterior ankle hook (8) is provided on the outer surface of the medial malleolus bone (1). The anterior hook (7) and posterior hook (8) have the same structure. The locking pressure hole (3) is divided into a locking screw hole and a pressure screw hole, which can be drilled and screwed into the pressure screw and locking screw. The lower tibiofibular syndesmosis fixation channel (4) has a lower tibiofibular screw direction thread, which can be screwed onto the guide to perform reverse drilling and introduce the lower tibiofibular syndesmosis fixation device. The horizontal locking hole (5) is divided into sagittal forward, backward and parallel locking holes, all of which are parallel to the ankle joint in the cross section and can be screwed in with locking screws. The medial malleolus compression hole (6) is a compression hole parallel to the medial malleolus joint surface, and a medial malleolus compression screw (11) can be screwed in. The bone plate body (2) is made of implantable metal.

2. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The locking compression screw (9), horizontal locking screw (10) and medial malleolus compression screw (11) are all installed on the bone plate body (2) and screwed into the interior of the medial malleolus bone (1).

3. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The locking pressure screw (9) has a screw diameter of 3.5 mm.

4. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The horizontal locking hole (5) and the horizontal locking screw (10) are each provided with six sets, and the diameter of the horizontal locking screw (10) is 2.7mm.

5. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The medial malleolus compression hole (6) and the medial malleolus compression screw (11) are mutually compatible, and the medial malleolus compression screw (11) has a diameter of 2.7 mm.

6. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The anterior and posterior malleolar hooks (7 and 8) are both attached to the anterior and posterior malleolar hooks of the medial malleolus.

7. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The locking compression screw (9), horizontal locking screw (10) and medial malleolar compression screw (11) are all made of implantable metal material.

8. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The cross section of the distal tibiofibular joint fixation channel (4) is on the vertical line of the center of the distal tibiofibular joint.

9. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The horizontal locking screw (10) has a cross-section parallel to the articular surface in different directions, and the medial malleolus compression screw (11) is parallel to the medial malleolus articular surface.

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