Anatomical clavicular arthrodesis plate and clavicular arthrodesis system

Abstract

The present application provides an anatomical sternoclavicular joint bone plate and a sternoclavicular joint internal fixation system. The anatomical sternoclavicular joint bone plate comprises a bone plate main body, the bone plate main body comprises a proximal end and a distal end, the proximal end of the bone plate main body is fitted with the clavicular part of the sternoclavicular joint, the proximal end of the bone plate main body is provided with a movable hole, the inner wall of the movable hole is a smooth surface, there is a gap between the inner wall of the movable hole and the screw penetrating therein, the central axis of the movable hole passes through the sternoclavicular joint, and the distal end of the bone plate main body is provided with a plurality of locking holes. The sternoclavicular joint internal fixation system comprises the anatomical sternoclavicular joint bone plate and a cancellous bone screw matched with the movable hole of the bone plate main body. The anatomical sternoclavicular joint bone plate can effectively ensure the stability after sternoclavicular joint dislocation, accelerate the repair and healing of the surrounding ligament, enable the patient to do early exercise, and has the advantages of early recovery of joint function.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically to an anatomical sternoclavicular joint bone plate and an internal fixation system for the sternoclavicular joint. Background Technology

[0002] Sternoclavicular joint fracture-dislocation is a common clinical condition. It can sometimes lead to serious consequences, such as difficulty swallowing, hoarseness, pneumothorax, dyspnea, brachial plexus injury, and related vascular symptoms. Long-term complications may include difficulty breathing, vascular compression, brachial plexus compression, and even thoracic outlet syndrome, sepsis, or death.

[0003] Currently, internal fixation methods for sternoclavicular joint dislocation include Kirschner wire fixation and wire fixation. However, because the sternum is cancellous bone, and the clavicle is located anterolaterally to the sternoclavicular joint, Kirschner wire fixation cannot effectively fix the sternum, and postoperative stable fixation is very difficult, often resulting in re-dislocation due to insecure fixation. Kirschner wires can migrate into the pleural cavity, causing further damage. External fixation is time-consuming, causing significant patient discomfort and impacting daily life. Existing techniques for acromioclavicular joint dislocation use clavicle hook plates with poor matching and stability, failing to conform to the physiological movement characteristics of the joint; wire fixation is prone to breakage and failure. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides an anatomical sternoclavicular joint bone plate and an internal fixation system for the sternoclavicular joint.

[0005] The objective of this invention is achieved through the following technical solution.

[0006] An anatomical sternoclavicular joint bone plate includes a bone plate body, which has a proximal end and a distal end. The proximal end of the bone plate body fits into the clavicular portion of the sternoclavicular joint. The proximal end of the bone plate body has a movable hole with a smooth inner wall. There is a gap between the inner wall of the movable hole and a screw inserted therein. The central axis of the movable hole passes through the sternoclavicular joint. The distal end of the bone plate body has several locking holes.

[0007] As a preferred embodiment of the aforementioned anatomical sternoclavicular joint bone plate, the movable hole is an elongated oval hole.

[0008] As a preferred embodiment of the above-mentioned anatomical sternoclavicular joint bone plate, the length direction of the movable hole is consistent with the length direction of the main body of the bone plate. 4. The anatomical sternoclavicular joint bone plate according to claim 1, characterized in that: the straight section of the movable hole is 0.5mm-2mm.

[0009] As a preferred embodiment of the aforementioned anatomical sternoclavicular joint bone plate, the locking hole is a tapered thread locking hole.

[0010] As a preferred embodiment of the above-mentioned anatomical sternoclavicular joint bone plate, the main body of the bone plate is provided with multiple grooves at intervals on both sides, and the grooves on both sides are arranged opposite to each other.

[0011] As a preferred embodiment of the aforementioned anatomical sternoclavicular joint bone plate, the groove is an arc-shaped groove that is recessed towards the center of the bone plate body.

[0012] As a preferred embodiment of the aforementioned anatomical sternoclavicular joint bone plate, the side of the bone plate body that fits against the clavicle is an arc-shaped concave surface.

[0013] The internal fixation system for the sternoclavicular joint includes the aforementioned anatomical sternoclavicular joint plate and cancellous bone screws that engage with the movable holes of the plate body.

[0014] As a preferred embodiment of the aforementioned internal fixation system for the sternoclavicular joint, the cancellous bone screw includes a threaded section and a non-threaded section. When the cancellous bone screw mates with the main body of the bone plate, the threaded section is threadedly connected to the sternal portion of the sternoclavicular joint, and the non-threaded section is located in the clavicular portion.

[0015] The beneficial effects of this invention are as follows:

[0016] The anatomical sternoclavicular joint bone plate of the present invention is provided with movable holes, which can ensure good fixation of the sternoclavicular joint position, effectively ensure the stability of the sternoclavicular joint after dislocation, accelerate the repair and healing of surrounding ligaments, and also allow for micro-movement between the plate and the screws in the movable holes, enabling patients to perform early exercises and recover joint function earlier. It has a significant therapeutic effect on the treatment of sternoclavicular joint dislocation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the screw structure;

[0020] Figure 4 This is a schematic diagram of the working principle of the present invention. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the working principle of the present invention. Figure 2 .

[0022] In the diagram: 1. Bone plate body; 2. Movable hole; 3. Locking hole; 4. Composite hole; 5. Groove; 6. Cancellous bone screw. Detailed Implementation

[0023] The technical solution of the present invention will be further described below through specific embodiments.

[0024] refer to Figures 1-5 This embodiment provides an anatomical sternoclavicular joint bone plate, which includes a bone plate body 1. The bone plate body 1 includes a proximal end and a distal end. The proximal end of the bone plate body 1 fits against the clavicle portion of the sternoclavicular joint. The proximal end of the bone plate body 1 is provided with a movable hole 2. The inner wall of the movable hole 2 is a smooth surface. There is a gap between the inner wall of the movable hole 2 and the screw inserted therein. The central axis of the movable hole 2 passes through the sternoclavicular joint. The distal end of the bone plate body 1 is provided with several locking holes 3.

[0025] In this embodiment, the anatomical sternoclavicular joint bone plate has a movable hole 2 at the proximal end of the bone cutting plate body. There is a gap between the movable hole 2 and the screw. Therefore, there is space for relative movement between the screw and the bone plate body 1. After surgery, the sternoclavicular joint can achieve micro-movement, and the joint function can be realized earlier. At the same time, the sternoclavicular joint is fixed by bone plate and screw, which has a good fixation effect and effectively ensures the stability of the sternoclavicular joint after dislocation.

[0026] In this embodiment, such as Figure 1 As shown, the movable hole 2 is an elongated oval hole, allowing relative movement with the screw along its length. The length of the movable hole 2 is aligned with the length of the bone plate body 1, conforming to the micro-movement pattern at the sternoclavicular joint, ensuring early exercise for the patient and faster recovery of joint function.

[0027] In this embodiment, the screw that mates with the movable hole 2 is a cancellous bone screw 6.

[0028] Preferably, the straight section of the movable hole 2 is 0.5mm-2mm, for example 1mm or 1.5mm.

[0029] In this embodiment, the locking hole 3 of the bone plate is a tapered threaded locking hole 3, which can be used to firmly lock the bone plate to the clavicle using locking pins. There are multiple locking holes 3, such as two, three or more, to ensure that the bone plate is firmly fixed to the clavicle.

[0030] A composite hole 4 is provided on the side of the movable hole 2 near the locking hole 3. The composite hole 4 is a combination hole of the locking hole 3 and the pressure hole. The pressure hole side can prevent the skin nails from being used to temporarily fix the bone plate. The locking screw can be placed in the locking hole 3 to fix the bone plate.

[0031] In this embodiment, such as Figure 1 and 2As shown, multiple grooves 5 are spaced apart on both sides of the bone plate body 1, and the grooves 5 on both sides are arranged opposite each other. The grooves 5 are arc-shaped grooves that are recessed towards the middle of the bone plate body 1. Therefore, the bone plate body 1 is easier to be shaped and bent at the position where the grooves 5 are set. Thus, it is easier to fit the bone plate body 1 to the clavicle during surgery, resulting in better fixation.

[0032] To further ensure the fit between the bone plate body 1 and the clavicle, the side of the bone plate body 1 that fits against the clavicle is an arc-shaped concave surface.

[0033] like Figures 3-5 As shown, this embodiment also proposes an internal fixation system for the sternoclavicular joint, which includes an anatomical sternoclavicular joint plate and cancellous bone screws 6 that mate with the movable holes 2 of the plate body 1.

[0034] In the internal fixation system of the sternoclavicular joint, the cancellous bone screw 6 includes a threaded section and a non-threaded section. When the cancellous bone screw 6 is engaged with the bone plate body 1, the threaded section is threaded to the sternal part of the sternoclavicular joint, and the non-threaded section is located in the clavicle part, thereby enabling micro-movement of the sternoclavicular joint.

[0035] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An anatomical sternoclavicular arthrodesis plate, characterized in that: The application relates to an anatomical clavicular plate, which comprises a plate body (1), wherein the plate body (1) comprises a proximal end and a distal end, the proximal end of the plate body (1) is matched with a clavicular part of a sternoclavicular joint, the proximal end of the plate body (1) is provided with a movable hole (2), the inner wall of the movable hole (2) is a smooth surface, there is a gap between the inner wall of the movable hole (2) and a screw penetrating through the movable hole (2), the central axis of the movable hole (2) passes through the sternoclavicular joint, the distal end of the plate body (1) is provided with a plurality of locking holes (3), the movable hole (2) is a long circular hole, the length direction of the movable hole (2) is consistent with the length direction of the plate body (1), and the side of the plate body (1) matched with the clavicle is an arc-shaped concave surface.

2. The anatomical sternoclavicular bone plating system according to claim 1, wherein: The linear segment of the movable hole (2) is 0.5-2 mm.

3. The anatomical sternoclavicular bone plating system according to claim 1, wherein: The locking hole (3) is a tapered threaded locking hole (3).

4. The anatomical acromio-clavicular joint bone plate according to claim 1, characterized in that: A plurality of grooves (5) are arranged on both sides of the plate body (1) at intervals, and the grooves (5) on both sides are oppositely arranged.

5. The anatomical acromio-clavicular joint bone plate according to claim 4, characterized in that: The groove (5) is an arc-shaped groove, which is recessed towards the middle part of the plate body (1).

6. A sternoclavicular joint internal fixation system characterized by: The application further relates to a cancellous bone screw (6) matched with the movable hole (2) of the plate body (1).

7. The sternoclavicular joint internal fixation system according to claim 6, wherein: The cancellous bone screw (6) comprises a threaded segment and a non-threaded segment, when the cancellous bone screw (6) is matched with the plate body (1), the threaded segment is threadedly connected with a sternum part of the sternoclavicular joint, and the non-threaded segment is located on the clavicular part.

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