Vertebral plate assembly with elastically adjustable filling block structure

Abstract

The present invention provides a vertebral plate assembly with an elastically adjustable filling block structure, comprising: a connecting piece, the connecting piece comprising a first connecting portion, an intermediate connecting portion and a second connecting portion, the intermediate connecting portion being located between the first connecting portion and the second connecting portion; a filling block, the connecting piece being connected to the filling block, the filling block having an elastic structure that allows the filling block to be extended. The technical solution of the present invention effectively solves the problem of gaps between the filling block and the vertebral plate and between the filling block and the side block in the vertebral plate assembly in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of vertebral plate components, in particular to a vertebral plate component with an elastically adjustable filling block structure. Background Art

[0002] The human spine includes the spinal canal structure, which can be narrowed due to various reasons, such as developmental spinal stenosis, cervical spondylosis, intervertebral disc herniation, posterior longitudinal ligament osteophytosis, and hypertrophy of the ligamentum flavum. If spinal stenosis occurs, it will cause compression of the spinal cord and cause axial pain, limb pain and numbness, muscle weakness and even paralysis, which seriously affects people's daily life. Laminectomy is a commonly used procedure to expand the spinal canal.

[0003] After the vertebral plate assembly in the prior art is connected and fixed, due to processing errors, installation errors and the like, there will be gaps between the filling block support and the vertebral plate and the side blocks, so that the filling block cannot support the vertebral plate and the side blocks. Summary of the invention

[0004] The main purpose of the present invention is to provide a vertebral plate assembly with an elastically adjustable filling block structure to solve the problem of gaps between the filling blocks and the vertebral plates and between the filling blocks and the side blocks in the vertebral plate assembly in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a vertebral plate assembly with an elastically adjustable filling block structure, comprising: a connecting piece, the connecting piece comprising a first connecting part, an intermediate connecting part and a second connecting part, the intermediate connecting part being located between the first connecting part and the second connecting part; a filling block, the connecting piece being connected to the filling block, and the filling block having an elastic structure that can allow the filling block to be stretched.

[0006] Furthermore, the filling block includes a basic block, a moving block and an elastic member, the basic block is connected to the middle connecting portion, the first end of the elastic member abuts against the basic block, and the second end of the elastic member abuts against the moving block.

[0007] Furthermore, the basic block has an elastic member accommodating space, and an opening of the elastic member accommodating space is located at the rear end of the basic block.

[0008] Furthermore, the elastic member is a spring, a first limiting column is provided on the side of the moving block facing the base block, the spring is sleeved on the circumferential outer side of the first limiting column, and / or a second limiting column is provided on the side of the base block facing the moving block, the spring is sleeved on the circumferential outer side of the second limiting column.

[0009] Furthermore, a limiting groove is provided on the base block, the limiting groove is located on the side wall of the elastic member accommodating space, and a limiting plate matching with the limiting groove is provided on the moving block.

[0010] Furthermore, the basic block is also provided with a moving block accommodating space, and the moving block is located in the moving block accommodating space.

[0011] Furthermore, the basic block also includes a basic block body and a slide groove, and the slide rail is located on the side of the basic block body.

[0012] Furthermore, the basic block includes two vertical plates, the first sides of the two vertical plates are connected to the side of the basic block body, the second sides of the two vertical plates have flanges, the two flanges extend toward each other, and the two vertical plates and the basic block body form a slide groove.

[0013] Furthermore, the middle connecting part is a plate-shaped structure, and the middle connecting part is arranged in the slide groove.

[0014] Furthermore, the middle connecting part includes a connecting plate body and a fixing part, wherein the fixing part is located on the connecting plate body and is fixed together with the two vertical plates.

[0015] Furthermore, the fixing part includes two fixing wings, the first end of the fixing wings is connected to the side of the connecting plate body, the second end of the fixing wings is a free end, the fixing wings have an extended state and a bent state, and when the fixing wings are in the bent state, the two fixing wings are fixed together with the two vertical plates.

[0016] Furthermore, screw connection holes are provided on the first connection part and the second connection part.

[0017] Furthermore, the screw connection hole on the second connection part includes a long hole, so that the screw can be adjusted along the length direction of the second connection part.

[0018] Furthermore, the screw connection hole on the first connection part and / or the screw connection hole on the second connection part is a long hole.

[0019] Further, the filling block has a trabecular bone structure.

[0020] Furthermore, the connecting piece is made of pure titanium material.

[0021] Furthermore, the filling block is made of titanium alloy material.

[0022] By applying the technical solution of the present invention, the connecting piece is connected to the vertebral plate and the lateral mass, the filling block is connected to the connecting piece, the filling block abuts between the vertebral plate and the lateral mass, and the filling block has an elastic structure that allows the filling block to stretch. In this way, when there is a gap between the filling block and the vertebral plate or between the filling block and the lateral mass, the filling block can be adjusted in length to make the filling block abut against the vertebral plate and the lateral mass. The technical solution of the present invention effectively solves the problem of gaps between the filling block and the vertebral plate and between the filling block and the lateral mass in the vertebral plate assembly in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the assembly structure of an embodiment of a vertebral plate assembly according to the present invention is shown;

[0025] Figure 2 Shows Figure 1 A schematic top view of a lamina assembly;

[0026] Figure 3 Shows Figure 1 Schematic diagram of the assembly of the connecting parts and the filling blocks of the vertebral plate assembly;

[0027] Figure 4 Shows Figure 3 A schematic diagram of the structure of the connecting parts of the lamina assembly;

[0028] Figure 5 Shows Figure 4 A structural schematic diagram of a connecting member from another angle;

[0029] Figure 6 Shows Figure 3 A schematic diagram of the structure of a filling block of a lamina assembly; and

[0030] Figure 7 Shows Figure 6 Schematic diagram of the structure of the basic block of the filling block.

[0031] The above drawings include the following reference numerals:

[0032] 10. Connecting piece; 11. First connecting part; 12. Intermediate connecting part; 121. Connecting plate body; 122. Fixing part; 13. Second connecting part; 20. Filling block; 21. Basic block; 211. Basic block body; 212. Vertical plate; 22. Moving block; 23. Elastic member. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of the layers and regions is enlarged, and the same reference numerals are used to represent the same devices, so their description will be omitted.

[0037] like Figures 1 to 7 As shown, a vertebral plate assembly with an elastically adjustable filling block structure of this embodiment includes: a connecting member 10 and a filling block 20. The connecting member 10 includes a first connecting portion 11, an intermediate connecting portion 12 and a second connecting portion 13, wherein the intermediate connecting portion 12 is located between the first connecting portion 11 and the second connecting portion 13. The connecting member 10 is connected to the filling block 20, and the filling block 20 has an elastic structure that allows the filling block 20 to be extended.

[0038] By applying the technical solution of this embodiment, the connecting piece 10 is connected to the vertebral plate and the lateral mass, the filling block 20 is connected to the connecting piece 10, the filling block 20 abuts between the vertebral plate and the lateral mass, and the filling block 20 has an elastic member 23 that can stretch the filling block 20. In this way, when there is a gap between the filling block 20 and the vertebral plate or between the filling block 20 and the lateral mass, the filling block 20 can be adjusted in length to make it abut against the vertebral plate and the lateral mass. The technical solution of this embodiment effectively solves the problem of gaps between the filling block and the vertebral plate and between the filling block and the lateral mass in the vertebral plate assembly in the prior art.

[0039] like Figures 1 to 6As shown, in the technical solution of this embodiment, the filling block 20 includes a basic block 21, a moving block 22 and an elastic member 23. The basic block 21 is connected to the middle connecting portion 12. The first end of the elastic member 23 abuts against the basic block 21, and the second end of the elastic member 23 abuts against the moving block 22. The filling block 20 has a compact structure, and the opening to the body during surgery is small. The elastic member 23 abuts against the basic block 21 and the moving block 22 to achieve the extension of the filling block 20, so that the filling block 20 can be tightly combined with the vertebral plate and the lateral block without external force.

[0040] like Figure 6 As shown, in the technical solution of this embodiment, the base block 21 has an elastic member accommodating space, and the opening of the elastic member accommodating space is located at the rear end of the base block 21. The setting of the elastic member accommodating hole makes the structure of the filling block 20 more compact. The elastic member 23 is bound in the elastic member accommodating space and is not easily deformed.

[0041] like Figure 6 As shown, in the technical solution of this embodiment, the elastic member 23 is a spring, and a first limiting column is provided on the side of the moving block 22 facing the base block 21, and the spring is sleeved on the circumferential outer side of the first limiting column. The elastic member 23 and the spring reduce the processing cost. The setting of the first limiting column prevents the spring from being misplaced. As another practicable method, a second limiting column is provided on the side of the base block 21 facing the moving block 22, and the spring is sleeved on the circumferential outer side of the second limiting column. Or the first limiting column and the second limiting column exist at the same time.

[0042] like Figures 3 to 6 As shown, in the technical solution of this embodiment, a limiting groove is provided on the base block 21, and the limiting groove is located on the side wall of the elastic member accommodating space, and a limiting plate matching the limiting groove is provided on the moving block 22. In this way, the relative movement of the moving block 22 and the base block 21 is not prone to misalignment. The extending direction of the limiting groove is from the rear end of the base block 21 to the front end of the base block 21. The above structure makes the structure of the filling block 20 compact.

[0043] like Figures 3 to 6 As shown, in the technical solution of this embodiment, the base block 21 is further provided with a moving block accommodation space, and the moving block 22 is located in the moving block accommodation space. The setting of the moving block accommodation space further ensures that the moving block 22 is not prone to misalignment or jamming when moving.

[0044] like Figures 3 to 6As shown, in the technical solution of this embodiment, the base block 21 also includes a base block body 211 and a slide groove, and the slide rail is located on the side of the base block body 211. The above structure is easy to install and convenient to use. For example, while the base block 21 limits the connection member 10, the connection member 10 can also achieve relative movement relative to the base block 21. Specifically, the first connection part 11, the middle connection part 12 and the second connection part 13 are an integrally formed structure, and the processing cost of such a connection member 10 is relatively low.

[0045] like Figures 3 to 6 As shown, in the technical solution of this embodiment, the base block 21 includes two vertical plates 212, the first side edges of the two vertical plates 212 are connected to the side of the base block body 211, the second side edges of the two vertical plates 212 are both flanged, the two flanges extend toward each other, and the two vertical plates 212 and the base block body form a slide groove. The above structure has low processing cost and compact structure. The above structure avoids the problem that the base block 21 and the connecting member 10 cannot be fine-tuned due to the fact that the base block 21 and the connecting member 10 are an integrated structure.

[0046] like Figures 1 to 7 As shown, in the technical solution of this embodiment, the middle connecting part 12 is a plate-like structure, and the middle connecting part 12 is arranged in the slide groove. In this way, the two ends of the connecting member 10 are connected to the vertebral plate and the side mass respectively, and such a structure makes the connection of the vertebral plate assembly stable and compact. In the technical solution of this embodiment, the vertebral plate assembly may also include a vertebral plate and a side mass.

[0047] like Figure 4 and Figure 5 As shown, in the technical solution of this embodiment, the intermediate connecting portion 12 includes a connecting plate body 121 and a fixing portion 122, the fixing portion 122 is located on the connecting plate body 121, and the fixing portion 122 is fixed together with two vertical plates 212. This further enhances the connection stability between the connecting member 10 and the filling block 20.

[0048] like Figure 4 and Figure 5 As shown, in the technical solution of this embodiment, the fixing portion 122 includes two fixing wings, the first end of the fixing wing is connected to the side of the connecting plate body 121, the second end of the fixing wing is a free end, and the fixing wing has an extended state and a bent state. When the fixing wing is in the bent state, the two fixing wings are fixed together with the two vertical plates 212. The connector 10 of the above structure has a compact structure. Specifically, the two fixing wings are symmetrically arranged, and the extension direction from the first end of the fixing wing to the second end of the fixing wing is the direction from the second connecting portion 13 of the connector 10 to the first connecting portion 11 of the connector 10.

[0049] like Figure 4 and Figure 5As shown, in the technical solution of this embodiment, screw connection holes are provided on the first connection part 11 and the second connection part 13. The above structure makes fixation more convenient.

[0050] like Figure 4 and Figure 5 As shown, in the technical solution of this embodiment, the screw connection hole on the second connecting part 13 includes a long hole so that the screw can be adjusted along the length direction of the second connecting part 13. The provision of the long hole allows the connector 10 to be adjusted during connection. For example, when the vertebral plate and the lateral mass need to be adjusted in a direction close to each other, the screw can be adjusted in a direction of the long hole close to the first connecting part 11, and when the vertebral plate and the lateral mass need to be adjusted in a direction away from each other, the screw can be adjusted in a direction of the long hole away from the first connecting part 11. As other practicable methods, the screw connection hole on the first connecting part 11 and the screw connection hole on the second connecting part 13 are long holes. Or the screw connection hole on the first connecting part 11 includes a long hole. The long hole can also be an open hole with one end open.

[0051] In the technical solution of the present embodiment, the filling block 20 has a trabecular structure. The trabecular structure can be the position where the trabecular structure contacts the vertebral lamina and the lateral mass. The trabecular structure has a rough surface similar to a cancellous bone structure, and the rough surface is embedded and combined with the upper and lower joint surfaces of the vertebral body into which the artificial vertebral lamina is embedded, providing the implanted vertebral lamina prosthesis with an initial stabilizing function to form support for the vertebral body, maintaining the expanded spinal canal space, and as bone cells and micro-blood vessels creep and grow along the micropores of the trabecular structure during the human body's rehabilitation process, the trabecular structure can eventually form an active fusion embedded structure, so that the artificial vertebral lamina and the autologous vertebral lamina of the vertebral body are fused into one, no longer permanently relying on bone screw fixation, and can achieve more solid long-term self-fixation. The vertebral lamina and the lateral mass can be part of the vertebral lamina assembly. The position where the filling block 20 contacts the spinal cord in the spinal canal is a smooth surface.

[0052] In the technical solution of this embodiment, the connecting piece 10 is made of pure titanium material. The above structure makes the connecting piece 10 easy to bend. The filling block 20 is made of titanium alloy material.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertebral plate assembly with an elastically adjustable filling block structure, characterized in that: include: A connecting member (10), the connecting member (10) comprising a first connecting portion (11), an intermediate connecting portion (12) and a second connecting portion (13), the intermediate connecting portion (12) being located between the first connecting portion (11) and the second connecting portion (13); A filling block (20), the connecting piece (10) being connected to the filling block (20), and the filling block (20) having an elastic structure enabling the filling block (20) to be extended; The filling block (20) comprises a basic block (21), a moving block (22) and an elastic member (23); the basic block (21) is connected to the intermediate connecting portion (12); a first end of the elastic member (23) abuts against the basic block (21); and a second end of the elastic member (23) abuts against the moving block (22); The basic block (21) further comprises a basic block body (211) and a slide groove, wherein the slide groove is located on a side of the basic block body (211); The basic block (21) comprises two vertical plates (212), the first side edges of the two vertical plates (212) being connected to the side faces of the basic block body (211), the second side edges of the two vertical plates (212) both having flanges, the two flanges extending towards each other, and the two vertical plates (212) and the basic block body forming the slide groove.

2. The vertebral plate assembly with elastically adjustable filling block structure according to claim 1, characterized in that: The basic block (21) has an elastic member accommodating space, and an opening of the elastic member accommodating space is located at the rear end of the basic block (21).

3. The vertebral plate assembly with elastically adjustable filling block structure according to claim 2, characterized in that: The elastic member (23) is a spring. A first limiting column is provided on a side of the moving block (22) facing the base block (21), the spring is sleeved on the circumferential outer side of the first limiting column, and / or A second limiting column is provided on a side of the basic block (21) facing the moving block (22), and the spring sleeve is arranged on the circumferential outer side of the second limiting column.

4. The vertebral plate assembly with elastically adjustable filling block structure according to claim 2, characterized in that: The basic block (21) is provided with a limiting groove, the limiting groove is located on the side wall of the elastic member accommodating space, and the moving block (22) is provided with a limiting plate that matches the limiting groove.

5. The vertebral plate assembly with elastically adjustable filling block structure according to claim 4, characterized in that: The basic block (21) is also provided with a moving block accommodating space, and the moving block (22) is located in the moving block accommodating space.

6. The vertebral plate assembly with an elastically adjustable filling block structure according to any one of claims 1 to 5, characterized in that: The middle connecting portion (12) is a plate-shaped structure, and the middle connecting portion (12) is arranged in the sliding groove.

7. The vertebral plate assembly with elastically adjustable filling block structure according to claim 6, characterized in that: The intermediate connecting portion (12) comprises a connecting plate body (121) and a fixing portion (122); the fixing portion (122) is located on the connecting plate body (121); and the fixing portion (122) is fixed together with the two vertical plates (212).

8. The vertebral plate assembly with elastically adjustable filling block structure according to claim 7, characterized in that: The fixing portion (122) comprises two fixing wings, wherein a first end of the fixing wing is connected to a side of the connecting plate body (121), and a second end of the fixing wing is a free end. The fixing wing has an extended state and a bent state. When the fixing wing is in the bent state, the two fixing wings are fixed together with the two vertical plates (212).

9. The vertebral plate assembly with an elastically adjustable filling block structure according to any one of claims 1 to 5, characterized in that: The first connecting portion (11) and the second connecting portion (13) are both provided with screw connecting holes.

10. The vertebral plate assembly with elastically adjustable filling block structure according to claim 9, characterized in that: The screw connection hole on the second connection part (13) comprises a long hole, so that the screw can be adjusted along the length direction of the second connection part (13).

11. The vertebral plate assembly with elastically adjustable filling block structure according to claim 9, characterized in that: The screw connection hole on the first connection part (11) and / or the screw connection hole on the second connection part (13) are long holes.

12. The vertebral plate assembly with an elastically adjustable filling block structure according to any one of claims 1 to 5, characterized in that: The filling block (20) has a trabecular structure.

13. The vertebral plate assembly with an elastically adjustable filling block structure according to any one of claims 1 to 5, characterized in that: The connecting piece (10) is made of pure titanium material.

14. The vertebral plate assembly with an elastically adjustable filling block structure according to any one of claims 1 to 5, characterized in that: The filling block (20) is made of titanium alloy material.

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