Lumbar zygapophyseal joint gasket

Abstract

The utility model provides a lumbar zygapophyseal joint gasket, and relates to the technical field of lumbar zygapophyseal joint lesion treatment, the lumbar zygapophyseal joint gasket comprises a gasket main body, the gasket main body comprises a first contact wall, a second contact wall and a side wall; the edge contour of the first contact wall comprises two arc-shaped parts, the two arc-shaped parts are in smooth transition connection, and one arc-shaped part is larger in size and fuller than the other arc-shaped part; and the middle part of the first contact wall protrudes outwards to form an arc-shaped bulge. After the lumbar zygopophysis joint gasket is implanted and fixed between an upper zygopophysis and a lower zygopophysis, the edge contour of the first contact wall and the design of the arc-shaped protrusion can increase the contact area with the upper zygopophysis, and stability is improved; meanwhile, the gap height between the upper zygopophysis and the lower zygopophysis can be kept due to the existence of the lumbar zygopophysis joint gasket, inflammation and nerve compression caused by abnormal contact or displacement between the zygopophysis are avoided, therefore, clinical symptoms of the patient are relieved, and the life quality of the patient is improved.

Description

Technical Field

[0001] This utility model relates to the field of treatment technology for lumbar facet joint diseases, and in particular to a lumbar facet joint pad. Background Technology

[0002] The articular processes of the lumbar vertebrae are important structures located at the junction of the pedicle and the laminae, with one pair above and one below, forming facet joints with adjacent vertebrae. Their main functions are to limit excessive rotation and flexion / extension of the lumbar spine, maintain spinal stability, and help distribute pressure on the vertebral bodies. The lumbar articular processes are divided into superior and inferior articular processes. The superior articular process faces posteromedially, and the inferior articular process faces anterolaterally; both form joints with adjacent vertebrae. The articular surfaces are covered with cartilage and surrounded by a joint capsule containing synovium and nerve endings.

[0003] Lumbar facet joint disorders are one of the most common clinical conditions, including degeneration, injury, or fracture. These disorders may cause inflammation or nerve compression, leading to symptoms such as spinal pain and limited mobility, which seriously affect patients' work and quality of life.

[0004] The purpose of this application is to provide some assistance in the treatment of this type of disease by maintaining joint stability and joint height. Utility Model Content

[0005] In view of the above situation, this utility model provides a lumbar facet joint pad, which aims to provide some assistance in the treatment of lumbar facet joint diseases by maintaining joint stability and gap height.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a facet joint pad for the lumbar spine, comprising a pad body, the pad body including a first contact wall, a second contact wall, and a side wall; the first contact wall is used to contact the superior facet joint, the second contact wall is used to contact the inferior facet joint, the first contact wall and the second contact wall are located on opposite sides of the pad body, and the first contact wall and the second contact wall are connected by the side wall; wherein:

[0008] The edge contour of the first contact wall includes two arcuate portions that are smoothly connected, with one arcuate portion being larger and fuller than the other.

[0009] The middle part of the first contact wall protrudes outward to form an arc-shaped protrusion.

[0010] In some embodiments of this invention, the edge contour of the second contact wall includes two arc-shaped portions that are smoothly connected, with one arc-shaped portion being larger and fuller than the other.

[0011] In some embodiments of this utility model, the middle part of the second contact wall protrudes outward to form an arc-shaped protrusion.

[0012] In some embodiments of this utility model, anti-slip teeth are provided on the arc-shaped protrusion.

[0013] In some embodiments of this utility model, multiple anti-slip teeth are evenly distributed on the arc-shaped protrusion.

[0014] In some embodiments of this utility model, the anti-slip teeth are in the shape of a polygonal pyramid.

[0015] In some embodiments of this utility model, the anti-slip teeth are conical, frustum-shaped, or multi-faceted.

[0016] In some embodiments of this invention, a developing pin connected to the gasket body is also included.

[0017] In some embodiments of this utility model, the first contact wall or the second contact wall has a storage hole, one end of which extends into the gasket body, and a developing pin is provided in the storage hole.

[0018] In some embodiments of this utility model, the gasket body is hollow.

[0019] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0020] After the lumbar facet joint spacer is implanted and fixed between the superior and inferior articular processes, the edge contour of the first contact wall and the design of the arc-shaped protrusion can increase the contact area with the superior articular process and improve stability. At the same time, the presence of the lumbar facet joint spacer can maintain the gap height between the superior and inferior articular processes, avoid inflammation and nerve compression caused by abnormal contact or displacement between the articular processes, thereby relieving the patient's clinical symptoms and improving the patient's quality of life.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the facet joint pad of the lumbar vertebra;

[0024] Figure 2 for Figure 1 A top view used to show the edge contour of the first contact wall.

[0025] Icons: 1-Pad body, 2-First contact wall, 3-Second contact wall, 4-Side wall, 5-Curved part, 6-Anti-slip teeth, 7-Developing pin. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0028] 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 one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" 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 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. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] The embodiments of this utility model will be described in detail below.

[0031] See Figures 1-2 This embodiment provides a facet joint pad for the lumbar spine, including a pad body 11, which includes a first contact wall 2, a second contact wall 3, and a side wall 4.

[0032] The first contact wall 2 and the second contact wall 3 are located on opposite sides of the gasket body 11. Figure 1As shown on the upper and lower sides), the first contact wall 2 and the second contact wall 3 are connected by a side wall 4. The first contact wall 2, the second contact wall 3, and the side wall 4 together form a hollow gasket body 11. The edge contours of the first contact wall 2 and the second contact wall 3 each include two arc-shaped portions 5 (in other embodiments, only the first contact wall 2 may include two arc-shaped portions 5). These two arc-shaped portions 5 are smoothly connected, and one arc-shaped portion 5 is larger and fuller than the other arc-shaped portion 5, thus forming an asymmetrical elliptical shape similar to an egg. The middle of the first contact wall 2 and the second contact wall 3 protrudes outward to form an arc-shaped protrusion. Multiple anti-slip teeth 6 are evenly distributed on the arc-shaped protrusion. These anti-slip teeth 6 are conical, pyramidal (such as a square pyramid), frustum, and / or frustum-shaped. The first contact wall 2 or the second contact wall 3 has a placement hole, one end of which extends into the gasket body 11. A developing pin 7 is provided in the placement hole.

[0033] In practical applications, when lumbar facet joint diseases require treatment, doctors can surgically implant a lumbar facet joint spacer between the superior and inferior articular processes. After the lumbar facet joint spacer is implanted and fixed between the superior and inferior articular processes, the edge contours of the first contact wall 2 and the second contact wall 3, as well as the arc-shaped protrusion design, increase the contact area with the superior and inferior articular processes, improving stability. At the same time, the presence of the lumbar facet joint spacer can maintain the height of the gap between the superior and inferior articular processes, avoiding inflammation and nerve compression caused by abnormal contact or displacement between the articular processes, thereby alleviating the patient's clinical symptoms and improving the patient's quality of life.

[0034] During implantation, the contrast-enhancing pins 7 can be used for precise positioning, ensuring the spacer is placed in the correct position. This also facilitates long-term monitoring of the spacer's position post-operatively, ensuring the stability and reliability of the treatment effect. After implantation, the anti-slip teeth 6 penetrate deep into the depressions on the bone tissue surface, preventing the spacer from sliding or shifting.

[0035] The specific dimensions of the gasket body 11 can be designed according to the anatomical structure of the facet joints of the human lumbar vertebrae to fit the space between the superior and inferior facet joints. The gasket body 11 can be made of biocompatible materials to ensure that long-term use in the human body will not produce harmful reactions.

[0036] Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A facet joint pad for lumbar vertebrae, characterized in that, The device includes a gasket body, which comprises a first contact wall, a second contact wall, and a side wall. The first contact wall is used to contact the superior articular process, and the second contact wall is used to contact the inferior articular process. The first and second contact walls are located on opposite sides of the gasket body and are connected by the side wall. The edge contour of the first contact wall includes two arc-shaped portions that are smoothly connected, with one arc-shaped portion being larger and fuller than the other. The middle part of the first contact wall protrudes outward to form an arc-shaped protrusion.

2. The lumbar facet joint pad according to claim 1, characterized in that, The edge contour of the second contact wall includes two arcuate portions that are smoothly connected, with one arcuate portion being larger and fuller than the other.

3. The lumbar facet joint pad according to claim 2, characterized in that, The middle part of the second contact wall protrudes outward to form an arc-shaped protrusion.

4. The lumbar facet joint pad according to claim 1, characterized in that, The arc-shaped protrusion is provided with anti-slip teeth.

5. The lumbar facet joint pad according to claim 4, characterized in that, Multiple anti-slip teeth are evenly distributed on the arc-shaped protrusion.

6. The lumbar facet joint pad according to claim 4, characterized in that, The anti-slip teeth are in the shape of a multi-faceted pyramid.

7. The lumbar facet joint pad according to claim 4, characterized in that, The anti-slip teeth are conical, frustum-shaped, or multi-faceted.

8. The lumbar facet joint pad according to claim 1, characterized in that, It also includes a developing pin connected to the gasket body.

9. The lumbar facet joint pad according to claim 8, characterized in that, The first contact wall or the second contact wall has a placement hole, one end of which extends into the gasket body, and the developing pin is disposed in the placement hole.

10. The lumbar facet joint pad according to any one of claims 1 to 9, characterized in that, The gasket body is hollow.

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