Skull repair prosthesis system

Abstract

The utility model provides a skull repair prosthesis system, and belongs to the technical field of skull repair systems applied to surgery. Comprising a skull plate and fixing parts, the multiple fixing parts are arranged in the circumferential direction of the skull plate at intervals, and the fixing parts rotate relative to the skull plate to extend out of the edge of the skull plate so as to clamp the two faces of a skull. After the skull plate is spliced at the skull defect position, the fixing parts are rotated to clamp the two surfaces of the skull, so that the skull plate is quickly fixed at the skull defect position, and the skull plate has the effects of improving the skull plate mounting efficiency and the operation effect and reducing the adverse reaction of a patient in an operation.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical application of skull repair systems, in particular to a skull repair prosthesis system. Background Art

[0002] Skull repair prostheses are applied to surgical reconstruction of skull defects caused by trauma or previous surgeries to restore the continuity of the skull and normal anatomical structure, while improving nervous system and cognitive functions, providing many aesthetic and functional benefits.

[0003] Current skull repair prosthesis systems usually consist of a skull plate, connecting pieces, and screws. The skull plate, connecting pieces, and screws are made of PEEK (polyetheretherketone), pure titanium, and titanium alloy materials respectively. During the surgery, after adjusting the skull plate to be consistent with the anatomical shape of the skull, it is fixed to the skull through the connecting pieces and screws.

[0004] However, in order to achieve the purpose of fixing the skull plate prosthesis, it is necessary to drill holes in the skull and the skull plate prosthesis during the operation, and use screws and connecting pieces to fix the skull plate prosthesis to the skull. The operation is cumbersome and time-consuming, and in the craniotomy environment, drilling holes in the skull and the skull plate prosthesis is likely to cause grinding debris and microparticles to enter the cranial cavity, posing a greater risk of adverse reactions to the patient. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a skull repair prosthesis system.

[0006] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0007] Provide a skull repair prosthesis system, including a skull plate and fixing components. A plurality of fixing components are arranged at intervals along the circumferential direction of the skull plate. The fixing components rotate relative to the skull plate and extend out of the edge of the skull plate to clamp both sides of the skull.

[0008] The fixing component includes a connecting column, and fixing pieces are fixedly arranged at both ends of the connecting column. Mounting holes are penetrated through the skull plate, and the connecting column is rotatably arranged in the mounting holes. The two fixing pieces are respectively located on both sides of the skull plate. Both fixing pieces are strip-shaped. The two ends of the connecting column are respectively connected to the middle parts of the two fixing pieces. The fixing pieces rotate in and out of the edge of the skull plate through rotation.

[0009] Mounting grooves with widths and thicknesses matching the sizes of the fixing pieces are formed on the top wall of the skull plate. The mounting grooves are used to cooperate with and limit the fixing pieces that rotate out of the edge of the skull plate. When the two ends of the fixing piece are located inside the edge of the skull plate, the two ends of the fixing piece elastically warp out of the mounting groove, and the two ends of the fixing piece that warp out of the mounting groove are manually toggled to rotate the fixing component.

[0010] Further, the skull plate and the fixing components are integrally formed by 3D printing.

[0011] Furthermore, both ends of the fixing piece are provided with rounded corners.

[0012] Furthermore, a plurality of through holes penetrating the skull plate are distributed on the skull plate, and the diameter of the through holes is 2 mm - 5 mm.

[0013] Furthermore, the skull plate is adapted to the skull defect site of the patient, and the thickness of the skull plate is 3 mm - 10 mm.

[0014] Furthermore, both the skull plate and the fixing component are made of polymer materials.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. After the skull plate is spliced at the skull defect position, by rotating a plurality of fixing components, the fixing components clamp both sides of the skull, realizing the rapid fixation of the skull plate at the skull defect position. The fixing method of the skull plate prosthesis is simple and convenient, without the need to drill holes in the skull and the skull plate, avoiding the adverse reactions caused by grinding debris and microparticles entering the skull.

[0017] 2. All components of the skull repair prosthesis system are composed of polymer materials, which can effectively avoid the disadvantages such as heat and cold sensitivity and interference with imaging examinations caused by metal prostheses and / or screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the skull repair prosthesis system according to the embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of the splicing part between the skull plate and the skull according to the embodiment of the present application.

[0020] Figure 3 It is a schematic cross-sectional view of the splicing part between the skull plate and the skull according to the embodiment of the present application.

[0021] Figure 4 It is a schematic diagram of the structure of the skull plate and the skull when they are disengaged from the splicing state according to the embodiment of the present application.

[0022] Figure 5 It is a schematic diagram of the skull plate and the fixing component in the factory state according to the embodiment of the present application.

[0023] Wherein, 1. Skull plate; 2. Fixing component; 21. Connecting column; 22. Fixing piece; 3. Mounting hole; 4. Mounting groove; 5. Through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0025] An embodiment of the present application discloses a cranial repair prosthesis system. Referring to Figure 1 as shown, it includes a cranial plate 1 and fixing components 2. A plurality of fixing components 2 are arranged at intervals along the circumferential direction of the cranial plate 1. Usually, 3 - 8 fixing components 2 are provided. By rotating the fixing components 2 relative to the cranial plate 1, the fixing components 2 extend out of the edge of the cranial plate 1 to clamp both sides of the patient's skull, so that the cranial plate 1 can be fixed at the cranial defect site of the patient.

[0026] Among them, the cranial plate 1 is adapted to the cranial defect site of the patient, including the edge shape of the cranial plate 1 and the overall curved surface shape of the cranial plate 1, both of which are adapted to the cranial defect site of the patient, so that the cranial plate 1 is a personalized sheet structure matching the patient's defect site. The thickness of the cranial plate 1 can be 3 mm - 10 mm, and it is specifically selected according to the thickness of the actual cranial defect site of the patient's head.

[0027] Referring to Figure 2 and Figure 3 as shown, the fixing component 2 can be composed of a connecting column 21 and two fixing pieces 22. The connecting column 21 and the fixing pieces 22 are integrally formed, and especially can be processed and formed together with the cranial plate 1 by 3D technology, so that the fixing component 2 and the cranial plate 1 have a good connection effect. The two fixing pieces 22 are respectively fixed at both ends of the connecting column 21. At least one protruding portion protruding away from the connecting column 21 is formed on the fixing piece 22. An installation hole 3 adapted to the connecting column 21 is penetrated through the cranial plate 1. The connecting column 21 is rotatably installed in the installation hole 3, and the diameter of the installation hole 3 can be 3 mm - 6 mm. Specifically, three installation holes 3 and fixing components 2 are provided, and the cranial plate 1 can be positioned and installed at the cranial defect of the patient through at least three fixing components 2.

[0028] In the embodiment of the present application, two protruding portions of the fixing piece 22 deviating from the connecting column 21 are provided, that is, the fixing pieces 22 at both ends of the connecting column 21 are strip-shaped, and the connecting column 21 is connected to the middle of the fixing piece 22. When one end of the fixing piece 22 abuts against the skull, the other end of the connecting piece supports on the cranial plate 1, increasing the contact and support area between the fixing piece 22 and the cranial plate 1 in the state of the cranial plate 1 repairing the skull, and improving the support stability of the cranial plate 1.

[0029] Furthermore, the protruding portion at the end of the fixing piece 22 is set as a rounded corner, which can reduce the edges and corners of the cranial repair prosthesis system. When rotating the fixing piece 22, the upper and lower fixing pieces 22 on the cranial plate 1 can reduce the stimulation to the surrounding cranial muscle groups.

[0030] Referring to Figure 4 and Figure 5As shown, further, a mounting groove 4 is provided on the top wall of the skull plate 1 on the outside of the mounting hole 3. The mounting groove 4 is used to cooperate with the fixing plate 22 that is limited to rotate out of the edge of the skull plate 1. Specifically, the mounting groove 4 has a width of 4mm-10mm, a length of 6mm-10mm, and a depth of 0.5mm-1.5mm. The mounting groove 4 is open on one side of the edge of the skull plate 1, and the width and thickness of the fixing plate 22 match the size of the mounting groove 4. When the protrusion on the fixing plate 22 is rotated and retracted into the edge of the skull plate 1, the fixing plate 22 undergoes a slight deformation, causing the protrusion on the fixing plate 22 to be staggered and tilted outside the mounting groove 4. Until the fixing plate 22 is rotated to cooperate with the skull clamp, the fixing plate 22 is restored to fully cooperate with the mounting groove 4, thereby limiting the rotation of the fixing plate 22. Without human intervention, the fixing plate 22 cannot be rotated to change its position.

[0031] In the embodiments of the present application, both the skull plate 1 and the fixation components can be made of polymer materials, such as one or more of polyaryletherketone, polyethylene, and polycarbonate. Compared to traditional cranioplasty prosthesis systems that use metal connectors and / or screws, metal cranioplasties and screws have drawbacks such as sensitivity to cold and heat, interference with imaging examinations, and other shortcomings that affect the patient experience and quality of life after surgery.

[0032] During actual use of the skull repair prosthesis system, when the skull plate 1 is shipped from the factory, the manufacturer applies external force to elastically deform the end of the fixing plate 22 on the top wall of the skull plate 1 away from the connecting column 21, causing it to tilt out of the mounting groove 4, and rotate the fixing component 2 until the fixing plate 22 is retracted into the edge of the skull plate 1. After the skull plate 1 is spliced into the patient's skull defect, the surgeon rotates the fixing component 2, and multiple fixing components 2 clamp the two sides of the skull around the defect at multiple points, thus completing the installation and positioning of the skull plate 1. Since the skull plate 1 is embedded in the patient's skull defect, it cannot move in a direction parallel to the surface of the skull plate 1. Therefore, it only needs to be limited in a direction perpendicular to the surface of the skull plate 1. The multiple fixing components 2 can achieve the operation of limiting the skull plate 1 in a direction perpendicular to its own surface by clamping the upper and lower surfaces of the skull around the installation location of the skull plate 1. When the skull plate 1 needs to be removed, the surgeon only needs to use a tool to apply sufficient external force to the end of the fixing plate 22 away from the connecting column 21 to lift it above the mounting slot 4, and then rotate the fixing plate 22 so that the fixing plate 22 is completely retracted into the edge of the skull plate 1, thereby releasing the connection between the skull plate 1 and the surrounding skull.

[0033] Furthermore, a plurality of through holes 5 are distributed on the skull plate 1, and the diameter of the through holes 5 can be 2mm-5mm by penetrating the skull plate 1. The design of the through holes 5 facilitates the drainage of intracranial fluid and facilitates surgery.

[0034] Those skilled in the art should understand that although the preferred embodiments of the present utility model have been described, once those skilled in the art know the basic creative concept, additional changes and modifications can be made to these embodiments. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model. Obviously, those skilled in the art can make various changes and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A cranial repair prosthesis system, characterized in that: The invention comprises a skull plate (1) and a fixing component (2), wherein a plurality of the fixing components (2) are arranged at intervals along the circumference of the skull plate (1), and the fixing components (2) extend out of the edge of the skull plate (1) by rotating relative to the skull plate (1) to clamp the two sides of the skull; The fixing component (2) includes a connecting column (21), and fixing plates (22) are fixedly provided at both ends of the connecting column (21). A mounting hole (3) is provided through the skull plate (1), and the connecting column (21) is rotatably provided in the mounting hole (3). The two fixing plates (22) are respectively located on both sides of the skull plate (1), and the two fixing plates (22) are both in the shape of long strips. The two ends of the connecting column (21) are respectively connected to the middle of the two fixing plates (22), and the fixing plates (22) are rotated to move in and out of the edge of the skull plate (1); The top wall of the skull plate (1) is provided with a mounting groove (4) whose width and thickness match the size of the fixing plate (22). The mounting groove (4) is used to cooperate with the fixing plate (22) that is limitedly rotated out of the edge of the skull plate (1). When the two ends of the fixing plate (22) are located within the edge of the skull plate (1), the two ends of the fixing plate (22) elastically tilt out of the mounting groove (4). By manually shifting the fixing plate (22) to tilt out the two ends of the mounting groove (4), the fixing component (2) can be rotated.

2. The cranial repair prosthesis system according to claim 1, characterized in that The skull plate (1) and the fixing component (2) are formed in one step by 3D printing.

3. The cranial repair prosthesis system according to claim 1, characterized in that, Both ends of the fixing plate (22) are configured as rounded corners.

4. A cranial repair prosthesis system according to any one of claims 1 to 3, characterized in that, The skull plate (1) is provided with a plurality of through holes (5) penetrating the skull plate (1), and the diameter of the through holes (5) is 2 mm to 5 mm.

5. A cranial repair prosthesis system according to any one of claims 1 to 3, characterized in that, The skull plate (1) is adapted to the skull defect of the patient, and the thickness of the skull plate (1) is 3 mm to 10 mm.

6. A cranial repair prosthesis system according to any one of claims 1 to 3, characterized in that, The skull plate (1) and the fixing component (2) are both made of polymer materials.

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