Lumbar lateral locking fusion cage

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a lumbar vertebra lateral locking fusion cage which comprises a supporting main body and a connecting part which are integrally formed through 3D printing, and the shape of the supporting main body is matched with that of a vertebral body end plate of a patient. The supporting main body comprises a structural area and two bone grafting areas penetrating through the structural area, tooth-shaped structures are arranged on the upper surface and the lower surface of the structural area, a locking screw and an anti-falling piece matched with the locking screw are arranged on the connecting part, the connecting part is designed in a central symmetry mode, and the connecting part is connected with the supporting main body. Screw holes matched with the locking screws are formed in the upper end and the lower end of the connecting part respectively, the anti-disengaging piece is a clamping ring and is rotationally connected with the locking screws, and the locking screws do not protrude out of the outer edge of the vertebral body of a patient. The device has the advantages of being simple in structure, convenient to operate, 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 in particular relates to a lumbar lateral locking fusion device. Background Art

[0002] With the increasing aging population, the incidence of lumbar degenerative diseases continues to rise, and patients need surgical treatment. Lumbar interbody fusion is usually used to treat lumbar degeneration and instability. Through surgical incisions and with the help of special surgical instruments, the lumbar interbody fusion device is implanted and fixed.

[0003] Existing lumbar intervertebral fusion devices have the following defects and shortcomings: the structure and model of the implant are single, and it cannot accurately match the end plate surface of the adjacent upper and lower lumbar vertebrae. There is no immediate stability and the auxiliary lumbar screw-rod system is required for early fixation. It is not adapted to the morphology of the normal vertebral end plate, and the locking screws are easy to loosen and dislocate, etc. Utility Model Content

[0004] The purpose of the utility model is to solve the defects and shortcomings of the existing technology and to design a lumbar lateral locking fusion device which has a simple structure, is stable and reliable, can reduce operation time and lower operation risks.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a lumbar lateral locking fusion device, including a support body and a connecting part, the support body includes a structural area and two bone grafting areas arranged through the structural area, the upper surface and the lower surface of the structural area are both provided with a tooth structure, and the connecting part is provided with a locking screw and an anti-slip part arranged in cooperation with the locking screw.

[0006] Preferably, the supporting body and the connecting portion are integrally formed by 3D printing.

[0007] Preferably, the outer shape of the support body is adapted to the end plate of the patient's vertebral body.

[0008] Preferably, the connecting portion is designed to be centrally symmetrical, and screw holes matching the locking screws are respectively provided at the upper and lower ends of the connecting portion.

[0009] Preferably, the anti-slip member is a snap ring, which is rotatably arranged on the connecting portion.

[0010] Preferably, the locking screw does not protrude beyond the outer edge of the patient's vertebral body.

[0011] After adopting the above technical solution, the lumbar lateral locking fusion device provided by the utility model has the following beneficial effects:

[0012] The present invention can customize the printing of fusion devices according to the individual patient through the design of 3D printing of the support body and the connecting part; the design of the support body shape being adapted to the patient's vertebral endplate can avoid the problem of a single fusion device model and the endplate not matching, and can effectively reduce the matching measurement time during surgery; the design of the toothed structure on the upper and lower surfaces of the structural area can increase the support force, friction and stress between the fusion device and the lumbar vertebra, prevent relative sliding between the fusion device and the lumbar vertebra, reduce surgical risks, and alleviate patient pain; the design of the locking screw not protruding from the outer edge of the patient's vertebra can ensure that there is no irritation to the surrounding tissues and organs; the design of the locking screw and the anti-slip part can effectively prevent the problem of dislocation while ensuring reliable fixation. Therefore, the present invention has the advantages of simple structure, easy operation, stability and reliability, and can reduce surgical time and reduce surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a lumbar lateral locking fusion device according to the present invention;

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

[0015] Figure 3 This is a side view of a lumbar lateral locking fusion device according to the present invention.

[0016] Among them: a supporting body 1, a connecting part 2, a structural area 3, a bone grafting area 4, a tooth-like structure 5, a locking screw 6, and an anti-slip component 7. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments described are merely a portion of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and in no way limits the present invention, its application, or use. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0018] 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 indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical 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 ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0020] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0021] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0022] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0023] The utility model discloses a lumbar lateral locking fusion device. Figure 1-3 As shown, it includes a support body 1 and a connecting part 2, and the support body 1 and the connecting part 2 are integrally formed by 3D printing, and the shape of the support body 1 is adapted to the patient's vertebral end plate, and the fusion device can be customized according to the patient's individual needs, avoiding the problem of a single fusion device model not matching the end plate, and can effectively reduce the intraoperative matching measurement time. Specifically, the support body 1 includes a structural area 3 and two bone grafting areas 4 set through the structural area 3. The upper and lower surfaces of the structural area 3 are both provided with tooth-shaped structures 5, which can increase the support force, friction and stress between the fusion device and the lumbar vertebra, and prevent the fusion device from interfering with the lumbar vertebra. The relative sliding reduces the surgical risk and alleviates the patient's pain. A locking screw 6 and an anti-slip component 7 cooperating with the locking screw 6 are provided on the connecting portion 2. Specifically, the connecting portion 2 is designed to be centrally symmetrical, and screw holes matching the locking screw 6 are respectively provided at the upper and lower ends of the connecting portion 2. The locking screw 6 does not protrude beyond the outer edge of the patient's vertebral body, which can ensure that there is no irritation to the surrounding tissues and organs. The anti-slip component 7 is a snap ring, which is rotatably set on the connecting portion and is provided with a notch. By rotating, the locking and loosening switching can be achieved, thereby effectively preventing the problem of dislocation while ensuring reliable fixation.

[0024] In summary, the utility model provides a lumbar lateral locking fusion device, which does not have the problem of single model and mismatch of end plate, can effectively reduce the matching measurement time during surgery, has the advantages of simple structure, convenient operation, stability and reliability, can reduce operation time, reduce surgical risks, etc. It has great market value and deserves wide promotion and application.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lumbar lateral locking fusion cage, characterized by: The invention comprises a supporting body (1) and a connecting portion (2), wherein the supporting body (1) comprises a structural area (3) and two bone grafting areas (4) arranged through the structural area (3), the upper surface and the lower surface of the structural area (3) are both provided with tooth-shaped structures (5), and the connecting portion (2) is provided with a locking screw (6) and an anti-slip component (7) arranged in cooperation with the locking screw (6).

2. The lumbar lateral locking fusion cage according to claim 1, characterized in that: The supporting body (1) and the connecting portion (2) are integrally formed by 3D printing.

3. The lumbar lateral locking fusion cage according to claim 1, characterized in that: The outer shape of the support body (1) is adapted to the patient's vertebral end plate.

4. The lumbar lateral locking fusion cage according to claim 1, characterized in that: The connecting portion (2) is designed to be centrally symmetrical, and screw holes matching the locking screws (6) are respectively provided at the upper and lower ends of the connecting portion (2).

5. The lumbar lateral locking fusion cage according to claim 1, characterized in that: The anti-slip member (7) is a snap ring, which is rotatably arranged on the connecting portion (2).

6. The lumbar lateral locking fusion cage according to claim 1, characterized in that: The locking screw (6) does not protrude beyond the outer edge of the patient's vertebral body.

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