Acetabulum posterior wall fixing plate
By designing a fixation plate for the posterior wall of the acetabulum, and utilizing a combination of a fixation plate and a hook plate, the problem of fixation for posterior wall fractures of the acetabulum was solved, achieving stable fixation and bone healing, and reducing the risk of postoperative complications.
Patent Information
- Application Number
- CN202422399267.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Fractures of the posterior wall and posterior column of the acetabulum are difficult to perform surgically. Existing fixation plates have poor adhesion to the bone surface, and multiple fixation plates are prone to loosening, resulting in a high rate of postoperative complications and making it difficult to achieve stable fixation.
A posterior wall fixation plate for the acetabulum is designed, comprising a fixation cross plate and a fixation hook plate. The hook plate hooks onto the posterior wall of the acetabulum, and the fixation cross plate fits against the posterior wall of the acetabulum. Multiple sets of fixation holes and suture holes are combined to enhance fixation stability.
It provides stable fixation to the posterior wall and posterior column of the acetabulum, prevents bone loosening, promotes bone healing, and reduces the risk of postoperative complications. It can be used alone or in combination with other fixation plates.
Smart Images
Figure CN223695981U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a posterior wall of acetabulum fixing plate. BACKGROUND
[0002] The posterior wall and posterior column fracture of the acetabulum is a common fracture in clinic. The acetabulum fracture is located deep in the anatomy, and there are many important blood vessels and nerves around it. The anatomical structure is complex. In addition, the acetabulum fracture often has many combined injuries, and the operation is difficult, and the incidence of postoperative complications is high. The acetabulum fracture highly depends on surgical reduction and fixation treatment. The acetabulum fracture includes posterior column and posterior wall fracture, horizontal and posterior wall fracture, T-shaped fracture, anterior column and posterior half horizontal fracture, and double column fracture. This type of fracture involves the quadrilateral body of the pelvis and is often accompanied by severe hip joint dislocation. The operation is difficult and requires high skills. The acetabular marginal fracture is a special type of acetabular posterior wall fracture. The fracture block produced by the fracture is small and thin, and is difficult to fix. When the acetabular posterior wall labrum is torn, it can only be repaired by suture. Because the shape of the posterior wall and posterior column area of the acetabulum is irregular, the common fixation plate has poor adhesion to the bone surface, and a single fixation plate and a single row of screws cannot form a firm internal fixation. When dealing with acetabular marginal fractures, it is difficult to meet the requirements, and multiple fixation plates and wire anchors are often used. However, the use of multiple fixation plates is prone to inaccurate placement because each fixation plate is independent. The adaption of the fixation plate to the actual anatomical structure of the posterior wall and posterior column of the acetabulum is poor, and the fixation plate needs to be shaped and adjusted. Finally, the fixation of multiple fixation plates is prone to loosening and inaccurate fixation, and in severe cases, it can lead to traumatic hip arthritis and femoral head necrosis due to poor reduction of the acetabulum after surgery. CONTENT
[0003] The utility model aims at providing a posterior wall of acetabulum fixing plate, which aims to solve the problem of difficult fixation of various types of acetabular posterior wall and posterior column fractures and acetabular posterior wall marginal fractures and difficult operation.
[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a posterior wall of acetabulum fixing plate, which comprises a fixed horizontal plate and a fixed hook plate. A plurality of first fixing holes are arranged on the fixed horizontal plate. The fixed hook plate is arranged on the upper end face of the fixed horizontal plate. The hook part of the fixed hook plate is arranged on the inner side wall of the bone surface close to the fixed horizontal plate.
[0005] In a possible implementation manner, the lower end face of the fixed horizontal plate is provided with a fixed vertical plate, and the fixed vertical plate is provided with a second fixing hole.
[0006] In a possible implementation manner, two groups of fixed vertical plates are arranged close to the left and right ends of the fixed horizontal plate.
[0007] In a possible implementation, the first fixing hole is a universal hole.
[0008] In a possible implementation, the first fixing hole is arranged close to the lower end edge of the fixing plate.
[0009] In a possible implementation, the fixing plate is provided with a suture hole.
[0010] In a possible implementation, the suture hole is provided with a suture groove close to one side of the edge of the fixing plate.
[0011] In a possible implementation, the suture hole is arranged close to the upper end surface of the fixing plate.
[0012] In a possible implementation, the inner side wall of the fixing plate is matched with the bone surface of the posterior wall of the acetabulum of the patient.
[0013] In a possible implementation, the fixing hook plate is provided with multiple groups.
[0014] The acetabular posterior wall fixing plate has the advantages that:
[0015] Compared with the prior art, the fixing plate and the fixing hook plate are arranged, the fixing plate is arranged horizontally, the fixing hook plate is arranged at the upper end of the fixing plate, the hook part of the fixing hook plate is arranged towards the acetabular bone surface of the patient, the hook part of the fixing hook plate is hooked on the edge of the posterior wall of the acetabulum of the patient, the fixing plate is attached to the posterior wall of the acetabulum of the patient, the fixing screw passes through the first fixing hole of the fixing plate to fix the device, is suitable for treating acetabular posterior wall fracture, acetabular posterior column fracture and acetabular edge posterior wall fracture, the fixing hook plate is hung on the posterior wall of the acetabulum of the patient, the device is fixed conveniently, and stable fixation is provided for the acetabular edge fracture, the posterior wall posterior column is fixed, the bone block is prevented from loosening, bone healing is promoted, the device can be used alone, and the device can be used cooperatively with other fixing plates. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0017] Figure 1 The drawings show the three-dimensional structure of the outer side wall of the acetabular posterior wall fixing plate according to the embodiments of the present application.
[0018] Figure 2 The drawings show the three-dimensional structure of the inner side wall of the acetabular posterior wall fixing plate according to the embodiments of the present application.
[0019] In the figure: 1, fixed hook plate; 2, fixed horizontal plate; 3, suture hole; 4, suture groove; 5, first fixing hole; 6, fixed vertical plate; 7, second fixing hole. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0021] Please refer to Figure 1 and Figure 2 A specific embodiment of the acetabular posterior wall fixing plate provided by the utility model will be described, which comprises a fixed horizontal plate 2 and a fixed hook plate 1. The fixed horizontal plate 2 is provided with a plurality of groups of first fixing holes 5. The fixed hook plate 1 is arranged at the upper end surface of the fixed horizontal plate 2. The hook part of the fixed hook plate 1 is arranged towards the inner side wall of the bone surface of the fixed horizontal plate 2.
[0022] The acetabular posterior wall fixing plate provided by the utility model is compared with the prior art. The fixed horizontal plate 2 and the fixed hook plate 1 are arranged. The fixed horizontal plate 2 is arranged horizontally. The fixed hook plate 1 is arranged at the upper end of the fixed horizontal plate 2. The hook part of the fixed hook plate 1 is arranged towards the acetabular bone surface of the patient. The hook part of the fixed hook plate 1 is hooked on the edge of the posterior wall of the acetabulum of the patient. The fixed horizontal plate 2 is attached to the posterior wall of the acetabulum of the patient. The fixed screw is arranged through the first fixing hole 5 on the fixed horizontal plate 2 to fix the device. It is suitable for treating acetabular posterior wall fracture, acetabular posterior column fracture and acetabular edge posterior wall fracture. The fixed hook plate 1 is hung on the posterior wall of the acetabulum of the patient, which is convenient for fixing the device and helps to provide stable fixation for acetabular edge fracture, fix the posterior wall and posterior column, prevent the bone block from loosening, promote bone healing, and can be used alone or cooperated with other fixing plates.
[0023] Specifically, please refer to Figure 1 and Figure 2 The fixed horizontal plate 2 is arranged horizontally. The fixed hook plate 1 is arranged vertically. The fixed hook plate 1 is arranged at the upper end of the fixed horizontal plate 2. The hook part of the fixed hook plate 1 is arranged towards the bone surface of the patient, i.e. towards the inner side wall of the bone surface of the fixed horizontal plate 2. The fixed horizontal plate 2 is provided with first fixing holes 5. A plurality of groups of first fixing holes 5 are arranged on the fixed horizontal plate 2 along the length direction of the fixed horizontal plate 2.
[0024] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2The lower end surface of the fixed horizontal plate 2 is provided with a fixed vertical plate 6, and the fixed vertical plate 6 is provided with a second fixed hole 7.
[0025] Specifically, please refer to Figure 1 and Figure 2 The fixed vertical plate 6 is vertically arranged and arranged at the lower end of the fixed horizontal plate 2, and the fixed vertical plate 6 is provided with a second fixed hole 7, and the second fixed hole 7 is provided with a plurality of groups on the fixed vertical plate 6 and arranged along the length direction of the fixed vertical plate 6, and the second fixed hole 7 is arranged in an inclined manner, that is, the axis of the second fixed hole 7 is arranged at an angle with the plate surface of the fixed vertical plate 6, and in the direction from the outer side wall to the inner side wall of the fixed vertical plate 6, the axis of the second fixed hole 7 is inclined from the upper end to the lower end of the fixed vertical plate 6, thereby enhancing the stability of the fixed screw.
[0026] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 The two groups of fixed vertical plates 6 are arranged close to the left and right ends of the fixed horizontal plate 2.
[0027] Specifically, please refer to Figure 1 and Figure 2 The fixed vertical plate 6 is provided with two groups, and the two groups of fixed vertical plates 6 are arranged close to the left and right ends of the fixed horizontal plate 2 respectively, the second fixed hole 7 on the left side fixed vertical plate 6 is arranged from the upper right side to the lower left side, and the second fixed hole 7 on the right side fixed vertical plate 6 is arranged from the upper left side to the lower right side, thereby enhancing the stability of the fixed screw.
[0028] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 The first fixed hole 5 is a universal hole.
[0029] Specifically, please refer to Figure 1 and Figure 2 The first fixed hole 5 is a universal hole, which is convenient for the fixed screw to pass through the first fixed hole 5 to fix the fixed horizontal plate 2.
[0030] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 The first fixed hole 5 is arranged close to the lower end edge of the fixed horizontal plate 2.
[0031] Specifically, please refer to Figure 1 and Figure 2 The first fixed hole 5 is arranged at the lower end of the fixed horizontal plate 2, so as to avoid that the fixed screw enters the patient's acetabulum after being implanted into the acetabular posterior wall through the first fixed hole 5, thereby causing additional damage to the patient.
[0032] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 , the fixing horizontal plate 2 is provided with a suture hole 3.
[0033] Specifically, please refer to Figure 1 and Figure 2 , the fixing horizontal plate 2 is provided with a suture hole 3, and the suture thread is bound to the free bone block through the suture hole 3, so that the stability of the device in use is increased.
[0034] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 , the suture hole 3 is provided with a suture groove 4 on the side close to the edge of the fixing horizontal plate 2.
[0035] Specifically, please refer to Figure 1 and Figure 2 , the suture hole 3 is provided with a suture groove 4 on the side close to the edge of the fixing horizontal plate 2, the suture groove 4 is connected with the edge of the fixing horizontal plate 2, the suture groove 4 is convenient for fixing the suture thread, helps to fix the free bone block, and the suture groove 4 limits the position of the suture thread.
[0036] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 , the suture hole 3 is arranged close to the upper end face of the fixing horizontal plate 2.
[0037] Specifically, please refer to Figure 1 and Figure 2 , the suture hole 3 is arranged close to the upper end edge of the fixing horizontal plate 2, the suture groove 4 is arranged above the suture hole 3, and the suture groove 4 is connected with the upper end edge of the suture hole 3 and the upper end edge of the fixing horizontal plate 2, so as to fix the free bone block.
[0038] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 , the inner side wall of the fixing horizontal plate 2 is matched with the acetabular posterior wall bone surface of the patient.
[0039] Specifically, please refer to Figure 1 and Figure 2 , the inner side wall of the fixing horizontal plate 2 is matched with the shape of the acetabular posterior wall bone surface of the patient, and the fixing horizontal plate 2 and the fixing vertical plate 6 are integrally formed machining parts.
[0040] As a specific embodiment of the acetabular posterior wall fixing plate provided by the utility model, please refer to Figure 1 and Figure 2 , the fixing hook plate 1 is provided with a plurality of groups.
[0041] Specifically, refer to Figure 1 And Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Figure 1 Figure The fixed hook plate 1 is provided with a plurality of groups along the upper end edge of the fixed horizontal plate 2, and the stability of the device is increased.
[0042] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A posterior wall acetabular fixation plate, characterized in that, The utility model relates to a fixing plate for hip joint replacement, which comprises a fixing horizontal plate and a fixing hook plate, a plurality of first fixing holes are arranged on the fixing horizontal plate, the fixing hook plate is arranged on the upper end surface of the fixing horizontal plate, the hook part of the fixing hook plate is arranged towards the inner side wall of the fixing horizontal plate close to the bone surface, and a fixing vertical plate is arranged on the lower end surface of the fixing horizontal plate, and a second fixing hole is arranged on the fixing vertical plate.
2. An acetabular posterior wall fixation plate as in Claim 1, wherein, Two groups of the fixing vertical plates are arranged close to the left and right ends of the fixing horizontal plate.
3. An acetabular posterior wall fixation plate as in claim 1, wherein, The first fixing hole is a universal hole.
4. A posterior wall acetabular fixation plate as in claim 1, wherein, The first fixing hole is arranged close to the lower end edge of the fixing horizontal plate.
5. A posterior wall acetabular fixation plate as in claim 1, wherein, A suture hole is arranged on the fixing horizontal plate.
6. An acetabular posterior wall fixation plate as in Claim 5, wherein, A suture groove is arranged on one side of the edge of the fixing horizontal plate close to the suture hole.
7. A posterior wall acetabular fixation plate as in Claim 5, wherein, The suture hole is arranged close to the upper end surface of the fixing horizontal plate.
8. A posterior wall acetabular fixation plate as in claim 1, wherein, The inner side wall of the fixing horizontal plate is inlaid with the bone surface of the posterior wall of the acetabulum of a patient.
9. A posterior wall acetabular fixation plate as in claim 1, wherein, The fixing hook plate is provided with a plurality of groups.