Combined titanium alloy vertebral plate

Abstract

The utility model discloses a combined titanium alloy vertebral plate, relates to a vertebral plate for spinal canal decompression of lumbar spinal stenosis, and aims to provide a vertebral plate with the functions of vertebral plate repair, bone grafting bed amplification and dural sac protection. The combined titanium alloy vertebral plate comprises two symmetrically-arranged half vertebral plates, each half vertebral plate comprises a domino connector, a fixing piece and a vertebral plate body, one side edge of each domino connector is provided with an open groove, and the top of each domino connector is provided with a fixing hole; the fixing piece is arranged in the fixing hole in a penetrating mode, the domino connector can be placed on a screw rod of a pedicle screw rod system in a lumbar spinal stenosis spinal decompression operation through the open groove, and the lower end of the fixing piece can abut against the screw rod. A side plate is arranged on one side of the vertebral plate main body, the side plate is connected with the other side edge of the domino joint, and a plurality of uniformly arranged micropores are formed in the surface of the vertebral plate main body.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical instruments, specifically to a combined titanium alloy vertebral lamina. Background Technology

[0002] After lumbar spinal decompression surgery, due to the absence of a lamina and the lack of posterior spinal structures, the spine relies entirely on anterior support. The anterior intervertebral discs have mobility, which can easily lead to internal fixation failure. For these reasons, a lamina needs to be installed during lumbar spinal decompression surgery.

[0003] During the surgery, the lamina of the affected segment is removed, resulting in a lamina defect. Existing lamina are mostly planar structures, which cannot well conform to the shape of the spine, making it easy to cause difficulties in the installation of the lamina prosthesis and postoperative screw removal, ultimately affecting the surgical outcome. Utility Model Content

[0004] The purpose of this invention is to provide a combined titanium alloy lamina to solve the problem of lamina defect repair after lumbar spinal decompression surgery.

[0005] Therefore, embodiments of this utility model propose a combined titanium alloy lamina.

[0006] According to an embodiment of the present invention, a combined titanium alloy lamina includes two symmetrically arranged hemilamina. Each hemilamina includes a domino connector, a fixation member, and a lamina body. One side of the domino connector has an opening groove, and the top of the domino connector has a fixing hole. The fixation member passes through the fixing hole, and the domino connector can be placed on the pedicle screw-rod system in spinal decompression surgery for lumbar spinal stenosis through the opening groove. The lower end of the fixation member can abut against the pedicle screw. One side of the lamina body has a side plate, which is connected to the other side of the domino connector. The surface of the lamina body is machined with a plurality of uniformly arranged micropores.

[0007] According to the present invention, the combined titanium alloy lamina is provided by setting two symmetrically arranged half-laminas. When the main body of the half-lamina is connected, it can form a certain angle, thereby better conforming to the shape of the dorsal side of the spine, making the installation of the lamina prosthesis more convenient, the screw-plate-bone structure more closely matched, and the screws less likely to be pulled out after surgery.

[0008] In some embodiments, the domino connector is integrally formed with the lamina body.

[0009] In some embodiments, the fixing hole is a threaded hole, and the fixing member is a threaded member.

[0010] In some embodiments, the fastener is made of titanium alloy.

[0011] In some embodiments, screw holes are provided at both ends of the vertebral lamina body along its length for installing screws.

[0012] In some embodiments, the screw is a cortical bone screw.

[0013] In some embodiments, the lamina bodies of the two hemilamina are arranged in a mating arrangement.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a top view of a hemilamina according to an embodiment of the present invention.

[0017] Figure 2 This is a front view of a hemilamina according to an embodiment of the present invention.

[0018] Figure label:

[0019] The composite titanium alloy lamina 100, semi-lamina 101, domino connector 10, opening groove 11, fixing hole 12, fastener 20, lamina body 30, side plate 31, micro-hole 32, screw hole 33. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. Based on the implementation schemes in this utility model, all other implementation schemes obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-2 As shown, the combined titanium alloy lamina 100 according to an embodiment of the present invention includes two symmetrically arranged semi-lamina 101, each semi-lamina 101 including a domino connector 10, a fixing member 20 and a lamina body 30.

[0022] The domino connector 10 has an opening groove 11 on one side and a fixing hole 12 on the top.

[0023] The fixation member 20 is inserted into the fixation hole 12. The domino connector 10 can be placed on the pedicle screw system in the spinal decompression surgery for lumbar spinal stenosis through the opening slot 11. The lower end of the fixation member 20 can abut against the screw.

[0024] A side plate 31 is provided on one side of the vertebral lamina body 30, and the side plate 31 is connected to the other side of the domino connector 10. Multiple uniformly arranged micropores 32 are machined on the surface of the vertebral lamina body 30.

[0025] Understandably, the pore 32 structure design is conducive to bone fusion and repair.

[0026] According to the combined titanium alloy vertebral lamina 100 of this utility model, by setting two symmetrically arranged half-lamina 101, the lamina body 30 in the half-lamina 101 can form a certain angle when docking, thereby better conforming to the morphology of the dorsal bone structure of the spine, making the installation of the lamina prosthesis more convenient, the screw-plate-bone structure more closely matched, and the screws less likely to be pulled out after surgery.

[0027] In some embodiments, such as Figures 1-2 As shown, the domino connector 10 is integrally formed with the vertebral lamina body 30.

[0028] In some embodiments, such as Figures 1-2 As shown, fixing hole 12 is a threaded hole, and fixing part 20 is a threaded part.

[0029] In some embodiments, such as Figures 1-2 As shown, the fastener 20 is made of titanium alloy.

[0030] In some embodiments, such as Figures 1-2 As shown, screw holes 33 are provided at both ends of the vertebral lamina body 30 along its length for installing screws.

[0031] In some embodiments, such as Figures 1-2 As shown, the screw is a cortical bone screw.

[0032] In some embodiments, such as Figures 1-2 As shown, the two hemilamina 101 are connected to the lamina body 30.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A composite titanium alloy vertebral plate, characterized in that, It includes two symmetrically arranged hemilamina, each hemilamina comprising: A domino connector, wherein an opening groove is provided on one side of the domino connector and a fixing hole is provided on the top of the domino connector; The fastener passes through the fastening hole, and the domino connector can be placed on the pedicle screw system in the spinal decompression surgery for lumbar spinal stenosis through the opening groove. The lower end of the fastener can abut against the pedicle screw. The vertebral lamina body has a side plate on one side, which is connected to the other side of the domino connector. The surface of the vertebral lamina body is machined with a plurality of uniformly arranged micropores.

2. The combined titanium alloy vertebral plate according to claim 1, characterized in that, The domino connector is integrally formed with the vertebral lamina body.

3. The combined titanium alloy vertebral plate according to claim 1, characterized in that, The fixing hole is a threaded hole, and the fixing component is a threaded component.

4. The combined titanium alloy vertebral plate according to claim 3, characterized in that, The fastener is made of titanium alloy.

5. The combined titanium alloy vertebral plate according to claim 1, characterized in that, Screw holes are provided at both ends of the vertebral lamina body along its length for installing screws.

6. The combined titanium alloy vertebral plate according to claim 5, characterized in that, The screw is a cortical bone screw.

7. The combined titanium alloy vertebral plate according to claim 1, characterized in that, The two hemilamina are arranged in a docking configuration.

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