Internal fixing device for ulna coronal process

Abstract

The utility model provides an ulna coronal process internal fixing device which comprises a plate body and a front supporting steel plate, the front supporting steel plate is arranged on the surface of the top of the plate body, screw locking holes are formed in the surface of the outer side of the plate body, and a rear spiral steel plate is arranged on the surface of the bottom of the plate body. By means of the special shape design, approach can be conducted directly from the rear side, injury of an operation to front muscles and soft tissue is reduced, postoperative pain is reduced, the recovery time is shortened, the supporting strength to the ulna coronal process area is enhanced through the buttress fixing mode of the front supporting steel plate, rapid healing of the ulna coronal process area is promoted by improving the supporting stability, and the ulna coronal process area can be recovered. And the effects of improving the success rate of the operation, shortening the rehabilitation period of the patient and improving the comfort degree in the treatment process are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to the ulna coronoid process, in particular to an internal fixation device for the ulna coronoid process. Background Art

[0002] The coronoid process of the ulna is an important structure of the ulna of the forearm. It is located in the forward extension of the proximal metaphysis of the ulna. It statically limits the stress acting on the elbow joint backward and is one of the key structures to maintain the stability of the elbow joint. The coronoid process of the ulna plays a vital role in controlling the hinge connection and rotational stability of the elbow joint humeral pulley and olecranon joint. Fractures of the ulna coronoid process often occur together with olecranon fractures, which are called proximal ulna fractures. They can easily lead to dislocation of the elbow joint, are difficult to treat, and have a poor prognosis. Although there are many surgical approaches and fixation methods for the treatment of this type of fracture, there is no treatment method that can be combined with The surgical approach has a simple anatomical structure and the internal fixation effect is reliable: the posterior approach is simple to operate, but it is difficult to fully expose the coronoid process and reduce the fracture, and it is difficult to achieve strong fixation with lag screws; the auxiliary medial approach and overhead approach have direct exposure and strong fixation, but the route is adjacent to important vascular and neural structures, requiring the surgeon to have a high proficiency in the medial and anterior anatomical structure of the elbow joint, the operation is difficult, and the soft tissue damage is large. Therefore, it is of great significance to carry out research on simple, safe and effective internal fixation and new surgical methods for ulnar coronoid fractures, so there is a special need for an ulnar coronoid internal fixation device.

[0003] However, most of the existing internal fixation devices for the ulna coronoid process are used. During the use of these devices, the proximal ulna fracture involving the olecranon and coronoid process is the most complicated fracture of the elbow joint, which is often accompanied by elbow dislocation. It is difficult to treat the elbow joint and has always troubled trauma orthopedic surgeons. Simple, effective and strong fixation of proximal ulna fractures is crucial for treatment. The posterior approach is the simplest and most commonly used surgical approach, but it is unable to strongly fix the anterior coronoid process and requires an auxiliary medial incision, which causes great trauma and easily damages the ulnar nerve. Utility Model Content

[0004] The purpose of the utility model is to provide an internal fixation device for the coronoid process of the ulna to solve the problem that the existing internal fixation device for the coronoid process of the ulna proposed in the above-mentioned background technology, during use, most of the internal fixation devices for the coronoid process of the ulna, during use, the proximal ulna fracture involving the olecranon and the coronoid process is the most complicated fracture of the elbow joint, which is often accompanied by elbow dislocation, and is the difficulty in elbow joint treatment, which has always troubled trauma orthopedic surgeons. Simple, effective and strong fixation of the proximal ulna fracture is crucial for treatment. The posterior approach is the simplest and most commonly used surgical approach, but it is impossible to strongly fix the anterior coronoid process, and an auxiliary medial incision is required, which causes great trauma and easily damages the ulnar nerve.

[0005] To achieve the above-mentioned purpose, the utility model provides an internal fixation device for the coronoid process of the ulna, comprising a plate body and a front supporting steel plate, wherein the top surface of the plate body is provided with a front supporting steel plate, the outer surface of the plate body is provided with a screw locking hole, and the bottom surface of the plate body is provided with a rear spiral steel plate.

[0006] Preferably, the plate body is made of titanium alloy.

[0007] Preferably, the connection between the front supporting steel plate and the plate body is curved.

[0008] Preferably, the screw locking holes are equidistantly distributed on the plate body and the rear spiral steel plate, and the screw locking holes penetrate the plate body and the rear spiral steel plate.

[0009] Preferably, the number of the screw locking holes is four, the shape of the screw locking holes is an "8" type, and the screw locking holes are equidistantly distributed.

[0010] Preferably, the rear spiral steel plate is curved.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the internal fixation device of the ulnar coronoid process can be directly approached from the back due to its special shape design, which reduces the damage of the surgery to the anterior muscles and soft tissues, thereby reducing postoperative pain and recovery time, and the buttress fixation method of the front support steel plate enhances the support strength of the ulnar coronoid process area, promotes the rapid healing of the ulnar coronoid process area by improving the support stability, thereby achieving the effect of improving the success rate of the surgery, shortening the patient's recovery period, and improving the comfort of the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic top view of the overall structure of the utility model.

[0014] In the figure: 1. Plate body; 2. Front supporting steel plate; 3. Screw locking hole; 4. Rear spiral steel plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2The utility model provides an internal fixation device for the coronoid process of the ulna: it includes a plate body 1 and a front supporting steel plate 2, the top surface of the plate body 1 is provided with the front supporting steel plate 2, the outer surface of the plate body 1 is provided with a screw locking hole 3, and the bottom surface of the plate body 1 is provided with a rear spiral steel plate 4. During use, the plate body 1 is the main part of the internal fixation device, which is in the shape of a curved long strip plate and is used to cover and support the coronoid process area of ​​the ulna. The top surface of the plate body 1 is provided with the front supporting steel plate 2, which increases the support for the coronoid process area of ​​the ulna and helps the coronoid process of the ulna to heal better, so as to enhance the fixing strength. The screw locking hole 3 is located on the outer surface of the plate body 1, which is used to lock the screw and fix the device on the bone. The screws are inserted and locked through these holes to ensure the stability of the device. The rear spiral steel plate 4 is arranged on the bottom surface of the plate body 1, and is bent as a whole to form a certain angle with the plate body 1 to adapt to the structure of the coronoid process of the ulna and provide additional stability. When using the internal fixation device of the coronoid process of the ulna, the structural design of the device allows a surgical approach to be performed directly from the posterior side of the patient's ulna, so that the coronoid process area of ​​the ulna can be directly reached while reducing damage to the surrounding soft tissues. The front support steel plate 2 of the device performs buttress fixation on the coronoid process of the ulna without the need to insert screws. The rear spiral steel plate 4 has a certain degree of curvature as a whole and can fit the surface of the ulna to a certain extent, thereby achieving the effect of fixing the coronoid process of the ulna and the ulnar convexity, with minimal damage and strong fixation.

[0017] Furthermore, the plate body 1 is made of titanium alloy, which has high strength, light weight and good biocompatibility and is suitable for long-term implantation in the human body.

[0018] Furthermore, the connection between the front support steel plate 2 and the plate body 1 is curved, and can be approached from the back, which is simple and easy to implant in front of the coronoid process without inserting screws, and the front end is wrapped around the ulnar coronoid process for buttress fixation.

[0019] Furthermore, the screw locking holes 3 are evenly distributed on the plate body 1 and the rear spiral steel plate 4, and the screw locking holes 3 penetrate the plate body 1 and the rear spiral steel plate 4. Multiple screw locking holes 3 can be connected to multiple screws to increase the fixing strength.

[0020] Furthermore, the number of the screw locking holes 3 is four, the shape of the screw locking holes 3 is an "8" type, the screw locking holes 3 are equidistantly distributed, and the screw locking holes 3 are used to fix the plate body 1, so the operation is minimally invasive and simple and easy.

[0021] Furthermore, the rear spiral steel plate 4 is curved, and the rear spiral steel plate 4 as a whole has a certain curvature and can fit on the surface of the ulna to a certain extent.

[0022] Working principle: An internal fixation device for the coronoid process of the ulna is designed for use in cases of ulnar coronoid process injury. The advantage is that it can be approached from the back and buttress fixed to the front, with little damage and strong fixation. During use, the unique design can achieve effective fixation of ulnar coronoid process injury. The main plate 1 adopts a curved long plate design, which cooperates with the front support steel plate 2 to provide coverage and support for the ulnar coronoid process area and enhance the fixation strength. The entire device can be implanted through a posterior approach, reducing the damage of the surgery to the surrounding soft tissues. The plate 1 is made of titanium alloy to ensure high strength and good biocompatibility, and is suitable for long-term implantation. The "8"-shaped design of the screw locking hole 3 and the curved shape of the rear spiral steel plate 4 together provide additional stability and fixation strength, making the entire device both strong and less damaging when fixing ulnar coronoid process injury, simplifying the surgical procedure and improving the treatment effect. In this way, an internal fixation device for the ulnar coronoid process is completed.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the implementation rules without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An internal fixation device for the coronoid process of an ulna, comprising a plate body (1) and a front support steel plate (2), characterized in that: The top surface of the plate body (1) is provided with a front supporting steel plate (2), the outer surface of the plate body (1) is provided with a screw locking hole (3), and the bottom surface of the plate body (1) is provided with a rear spiral steel plate (4); The plate body (1) is the main part of the internal fixing device and is in the shape of a curved long strip. The connection between the front supporting steel plate (2) and the plate body (1) is in a curved shape.

2. The internal fixation device for the coronoid process of the ulna according to claim 1, characterized in that: The plate body (1) is made of titanium alloy.

3. The internal fixation device for the coronoid process of the ulna according to claim 1, characterized in that: The screw locking holes (3) are evenly distributed on the plate body (1) and the rear spiral steel plate (4), and the screw locking holes (3) penetrate the plate body (1) and the rear spiral steel plate (4).

4. The internal fixation device for the coronoid process of the ulna according to claim 1, characterized in that: The number of the screw locking holes (3) is four, the shape of the screw locking holes (3) is an "8" type, and the screw locking holes (3) are equidistantly distributed.

5. The internal fixation device for the ulna coronoid process according to claim 1, characterized in that: The rear spiral steel plate (4) is in a curved shape.

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