Lumbar fusion cage convenient to adjust

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a lumbar fusion cage convenient to adjust, which comprises a fusion cage body and a bone grafting area penetrating through the fusion cage body, the fusion cage body is formed by 3D printing of metal materials, and the shape of the fusion cage body is matched with a vertebral end plate of a patient. A plurality of filling holes communicated with the bone grafting area are formed in the two sides of the fusion cage body, tooth-shaped structures are arranged on the upper surface and the lower surface of the fusion cage body, an adjusting assembly is arranged at one end of the fusion cage body and comprises a rotating sleeve and a pin shaft connecting the rotating sleeve to the fusion cage body, an adjusting hole is formed in the rotating sleeve, and the adjusting hole is communicated with the pin shaft. A groove is formed in one end of the fusion cage body, the rotating sleeve is installed in the groove through a pin shaft, the pin shaft is sleeved with the rotating sleeve through a connecting hole, and the connecting hole is perpendicular to the adjusting hole. The device has the advantages of being simple in structure, convenient to adjust, stable, reliable, capable of reducing operation time and operation risks and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a lumbar interbody fusion device which is convenient to adjust. Background Art

[0002] With the continuous increase of the aging population, the incidence rate of lumbar degenerative diseases has been continuously rising. Patients need surgical treatment. Lumbar interbody fusion is usually used to treat lumbar degeneration and unstable diseases. Through a surgical incision and with the help of special surgical instruments, the implantation and fixation of the lumbar interbody fusion device are completed.

[0003] The existing lumbar interbody fusion devices have the following defects and deficiencies: the structure and model of the implant are single, it cannot accurately match the end plates of the adjacent upper and lower lumbar vertebrae, there is no immediate stability, it needs to be assisted by a lumbar nail-rod system for early fixation, it does not adapt to the shape of the normal vertebral end plate, and its position in the body is not easy to adjust, etc. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects and deficiencies existing in the prior art, and to design a lumbar interbody fusion device which is easy to adjust, has a simple structure, is stable and reliable, can reduce the operation time and lower the operation risk.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a lumbar interbody fusion device which is easy to adjust, comprising a fusion device body and a bone grafting area arranged through the fusion device body. Tooth-shaped structures are arranged on both the upper surface and the lower surface of the fusion device body, and an adjusting component is arranged at one end of the fusion device body. The adjusting component comprises a rotating sleeve and a pin shaft connecting the rotating sleeve to the fusion device body, and an adjusting hole is arranged on the rotating sleeve.

[0006] Preferably, the fusion device body is formed by 3D printing with a metal material, and the outer shape of the fusion device body is adapted to the vertebral end plate of the patient.

[0007] Preferably, a plurality of filling holes communicating with the bone grafting area are arranged on both sides of the fusion device body.

[0008] Preferably, a groove is arranged at one end of the fusion device body, and the rotating sleeve is installed in the groove through the pin shaft.

[0009] Preferably, a connecting hole matching the pin shaft is arranged on the rotating sleeve, and the connecting hole is vertically arranged with respect to the adjusting hole.

[0010] Preferably, the distance between the upper surface and the lower surface of the fusion device body gradually decreases along the direction away from the end where the adjusting component is arranged.

[0011] After adopting the above technical solution, the lumbar interbody fusion device which is easy to adjust provided by the utility model has the following beneficial effects:

[0012] The fusion device body of the present utility model is formed by 3D printing with metal materials, and the outer shape of the fusion device body is adapted to the end plate of the patient's vertebral body, eliminating the problem of a single model not matching the end plate. It can effectively reduce the intraoperative matching measurement time, and there is no risk of fracture during implantation. The material does not irritate human tissues and organs. Through the design of multiple filling holes connected to the bone grafting area, bone growth can be more facilitated. Through the design of the toothed structures on the upper and lower surfaces of the fusion device body, the support force, friction force, and stress between the fusion device and the lumbar vertebra can be increased, preventing relative sliding between the fusion device and the lumbar vertebra, reducing the surgical risk, and alleviating the patient's pain. Through the design of the adjustment component, the position adjustment of the fusion device in the body can be achieved. Therefore, the present utility model has the advantages of simple structure, convenient adjustment, stability and reliability, being able to reduce the surgical time, and reducing the surgical risk. Description of the Drawings

[0013] Figure 1 is a schematic structural view of a lumbar fusion device convenient for adjustment according to the present utility model;

[0014] Figure 2 is a top view of a lumbar lateral locking fusion device according to the present utility model;

[0015] Figure 3 is a schematic structural view of the pin shaft in the present utility model;

[0016] Figure 4 is a schematic structural view of the rotating sleeve in the present utility model.

[0017] Among them: fusion device body 1, bone grafting area 2, toothed structure 3, pin shaft 4, rotating sleeve 5, adjustment hole 6, filling hole 7, groove 8, connection hole 9. Detailed Embodiments

[0018] The following further clearly and completely describes the present utility model in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way constitutes a limitation to the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0019] 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, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0022] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the attached drawing is inverted, the device described as "above or over other devices or structures" will then be positioned "below or under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, so they should not be construed as limiting the protection scope of the present utility model.

[0024] A lumbar interbody fusion device of the present utility model that is easy to adjust, as Figures 1-4 shown, includes a fusion device body 1 and a bone grafting area 2 penetrating through the fusion device body 1. The fusion device body 1 is formed by 3D printing with a metal material, and the outer shape of the fusion device body 1 is adapted to the end plate of the patient's vertebra. Designed in this way, there is no problem of a single model not matching the end plate, which can effectively reduce the intraoperative matching measurement time, and there is no risk of fracture during implantation. The material has no irritation to human tissues and organs. A plurality of filling holes 7 communicating with the bone grafting area 2 are arranged on both sides of the fusion device body 1, which can make bone growth easier. Tooth-like structures 3 are arranged on both the upper surface and the lower surface of the fusion device body 1, which can increase the supporting force, friction force and stress between the fusion device and the lumbar vertebra, prevent relative sliding between the fusion device and the lumbar vertebra, reduce the surgical risk and relieve the patient's pain. An adjusting component is arranged at one end of the fusion device body 1, which can realize the position adjustment of the fusion device in the body. The adjusting component includes a rotating sleeve 5 and a pin shaft 4 connecting the rotating sleeve 5 to the fusion device body 1. An adjusting hole 6 is arranged on the rotating sleeve 5.

[0025] Specifically, a groove 8 is provided at one end of the fusion device body 1, and the rotating sleeve 5 is installed in the groove 8 through a pin shaft 4. Further, a connection hole 9 matching the pin shaft 4 is provided on the rotating sleeve 5, and the rotating sleeve 5 is sleeved on the pin shaft 4 through the connection hole 9. The connection hole 9 is vertically arranged with the adjustment hole 6. The distance between the upper surface and the lower surface of the fusion device body 1 gradually decreases along the direction away from the end where the adjustment assembly is provided, that is, there is a certain included angle between the upper surface and the lower surface of the fusion device body 1, which is beneficial to correcting lumbar lordosis and maintaining the front and rear heights of the intervertebral space.

[0026] In summary, the lumbar fusion device provided by the present invention is easy to adjust, does not have the problem of a single model not matching the end plate, can effectively reduce the intraoperative matching measurement time, has the advantages of simple structure, easy adjustment, stable and reliable, can reduce the operation time and lower the operation risk, has great market value, and is worthy of wide promotion and application.

[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An adjustable lumbar interbody fusion device, characterized in that: It includes a fusion device body (1), and a bone grafting area (2) arranged through the fusion device body (1). Tooth-shaped structures (3) are arranged on both the upper surface and the lower surface of the fusion device body (1), and an adjusting component is arranged at one end of the fusion device body (1). The adjusting component includes a rotating sleeve (5) and a pin shaft (4) connecting the rotating sleeve (5) to the fusion device body (1). An adjusting hole (6) is arranged on the rotating sleeve (5).

2. The lumbar fusion device according to claim 1, wherein: The fusion device body (1) is formed by 3D printing with a metal material, and the outer shape of the fusion device body (1) is adapted to the end plate of the patient's vertebral body.

3. The lumbar fusion device according to claim 1, wherein: A plurality of filling holes (7) communicating with the bone grafting area (2) are arranged on both sides of the fusion device body (1).

4. The adjustable lumbar interbody fusion device according to claim 1, characterized in that: A groove (8) is arranged at one end of the fusion device body (1), and the rotating sleeve (5) is installed in the groove (8) through the pin shaft (4).

5. The lumbar interbody fusion device according to claim 4, wherein: A connecting hole (9) matching the pin shaft (4) is arranged on the rotating sleeve (5), and the connecting hole (9) is vertically arranged with respect to the adjusting hole (6).

6. The lumbar fusion device according to claim 1, wherein: The distance between the upper surface and the lower surface of the fusion device body (1) gradually decreases in the direction away from the end where the adjusting component is arranged.

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