CN217286192U - Intervertebral fusion cage - Google Patents
Intervertebral fusion cage Download PDFInfo
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- CN217286192U CN217286192U CN202123055190.1U CN202123055190U CN217286192U CN 217286192 U CN217286192 U CN 217286192U CN 202123055190 U CN202123055190 U CN 202123055190U CN 217286192 U CN217286192 U CN 217286192U
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- fusion cage
- fusion
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- bone grafting
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Abstract
The utility model discloses an interbody fusion cage belongs to orthopedic implant technical field, interbody fusion cage includes the fusion cage main part, and the fusion cage main part has vertical bone grafting window, is equipped with vertical annular partition portion in the bone grafting window, is equipped with two at least vertical reinforcing plates around annular partition portion in the bone grafting window. The utility model discloses an intervertebral fusion cage whole rigidity is high, and new bone adhesion capacity is good, improves the osteogenesis ability, and then improves fusion strength, increases the stability of centrum.
Description
Technical Field
The utility model relates to an orthopedic implant technical field especially indicates an interbody fusion cage.
Background
Degenerative and traumatic diseases of the cervical spine cause loss of stability of the cervical spine and loss of function in maintaining the height of the intervertebral space, and even damage to nerves or nerve roots, which in turn affects the normal function of the limbs. Cervical discectomy and internal fixation fusion after nerve decompression are common surgical treatment methods. The interbody cage is a common implant for the cervical spine fixation fusion, and can reconstruct the intervertebral height of the cervical spine, maintain the physiological curve of the cervical spine, and thus reconstruct the stability of the cervical spine.
Most of the clinical conventional interbody fusion cages are made of non-absorbable Polyetheretherketone (PEEK) or titanium alloy materials, but the former has the defects of poor osteogenesis capacity, biological inertia, non-absorbability and the like, so that the fusion effect is poor; the stress shielding effect caused by high modulus of the later easily causes adverse reactions such as bone absorption, false joints and the like; compared with the interbody fusion cage, the interbody fusion cage prepared from the absorbable composite material has the advantages of excellent mechanical property, excellent osteogenesis capacity, absorbability, no imaging interference and the like, and is more suitable for clinical requirements.
The inventor finds that the existing absorbable interbody fusion cage mainly adopts the design structure of the traditional fusion cage and adopts the design of a larger bone grafting window, a fusion hole and the like, so that the fusion cage has low overall rigidity, poor adhesion capability of new bones and poor stability, and cannot meet clinical requirements.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an intervertebral fusion cage with high overall rigidity and good adhesion of new bone.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides an interbody fusion cage, includes the fusion cage main part, the fusion cage main part has vertical bone grafting window, be equipped with vertical annular partition portion in the bone grafting window, center on in the bone grafting window annular partition portion is equipped with two at least vertical reinforcing plates.
Further, the number of the reinforcing plates is at least 3 and the reinforcing plates are evenly distributed.
Further, the upper surface and/or the lower surface of the fusion cage body are/is provided with vertical sheet-shaped fixing teeth extending along the length direction of the fusion cage body.
Further, the number of the sheet-shaped fixing teeth is 3, one of the sheet-shaped fixing teeth is located in the middle of the front end of the fusion device body, and the other two sheet-shaped fixing teeth are located on two sides of the rear end of the fusion device body respectively.
Furthermore, the sheet-shaped fixed teeth and the fusion device main body are integrally formed and processed.
Further, the upper surface and/or the lower surface of the fusion cage body are/is provided with convex teeth.
Furthermore, a pair of clamping grooves is formed in the rear end of the fusion cage main body, and the included angle between the clamping angle of the pair of clamping grooves and the sagittal plane of a human body is 15-25 degrees.
Further, the fusion cage main body is made of an absorbable material, and/or is formed by injection molding, compression molding, 3D printing or machining.
Further, the inside development sign that is equipped with in both sides of integration ware main part, the development sign is absorbable material.
Further, the development mark is made of magnesium or magnesium alloy material.
The utility model discloses following beneficial effect has:
the utility model discloses an interbody fusion cage is equipped with vertical annular partition portion in the bone grafting window, be equipped with two at least vertical reinforcing plates around annular partition portion in the bone grafting window, on the one hand annular partition portion and reinforcing plate form the additional strengthening in the bone grafting window jointly like this, on the other hand can divide the bone grafting window into a plurality of bone windows of planting for a short time, make the new bone show the increase with the contact surface that fuses, compare in prior art, fuse the ware bulk rigidity height, the new bone adhesion capacity is good, it is good to become the bone ability, and then improve and fuse intensity, increase the stability of centrum.
Drawings
Fig. 1 is a schematic view of the overall structure of the intervertebral cage of the present invention, wherein (a) is a front view, (b) is a side view, and (c) is a perspective view;
FIG. 2 is a cross-sectional view of the interbody cage of the present invention;
fig. 3 is a schematic structural view of the developing mark in the interbody fusion cage of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides an interbody fusion cage, as shown in fig. 1-3, including fusion cage main part 1, fusion cage main part 1 has vertical bone grafting window 11, is equipped with vertical annular partition 12 in the bone grafting window 11, is equipped with two at least vertical reinforcing plates 13 around annular partition 12 in the bone grafting window 11, is equipped with reinforcing plate 13 between the surface of annular partition 12 and the internal surface of bone grafting window 11 promptly to play the connection fixation.
The utility model discloses an interbody fusion cage is equipped with vertical annular partition portion in the bone grafting window, be equipped with two at least vertical reinforcing plates around annular partition portion in the bone grafting window, on the one hand annular partition portion and reinforcing plate form the additional strengthening in the bone grafting window jointly like this, on the other hand can divide the bone grafting window into a plurality of bone windows of planting for a short time, make the new bone show the increase with the contact surface that fuses, compare in prior art, fuse the ware bulk rigidity height, the new bone adhesion capacity is good, it is good to become the bone ability, and then improve and fuse intensity, increase the stability of centrum. The utility model is suitable for an intervertebral fusion of backbone is fixed, especially intervertebral fusion of cervical vertebra is fixed.
To further increase the overall rigidity of the cage, the number of stiffening plates 13 is preferably at least 3 and is uniformly distributed. In the embodiment shown in the figures, the number of the reinforcing plates 13 is 4, and the reinforcing plates 13 and the annular partition 12 form a cross-shaped and annular geometric figure so as to divide the bone grafting window 11 into 5 small bone grafting windows of 4 fan-shaped rings and 1 annular ring. Wherein the annular partition 12 and the reinforcement plate 13 may be injection molded together with the cage body 1.
To prevent the lateral displacement of the fusion cage and to improve the stability of the fusion cage, the upper and/or lower surface of the fusion cage body 1 may be provided with sheet-shaped fixing teeth 14 extending vertically and along the length of the fusion cage body 1. In the embodiment shown in the drawings, the upper surface and the lower surface of the fusion cage body 1 are provided with sheet-like fixing teeth 14 and are distributed vertically symmetrically. Further, the number of the sheet-like fixing teeth 14 is preferably 3, one of which is located in the middle of the front end (the direction indicated by the arrow in fig. 1 (a)) of the fusion cage body 1, and the other two of which are located on both sides of the rear end of the fusion cage body 1, so that the sheet-like fixing teeth 14 are arranged in a triangular position, thereby improving the stability of the fusion cage. To improve the overall strength of the fusion cage, the sheet-like fixing teeth 14 are preferably formed integrally with the fusion cage body 1.
In order to increase the firmness of the fusion cage, the upper surface and/or the lower surface of the fusion cage main body 1 can be provided with convex teeth, and the convex teeth can also incline towards the direction of the rear end 1 of the fusion cage main body so as to facilitate the implantation of the fusion cage. The sheet-like fixing teeth 14 and the convex teeth may be injection molded together with the fusion device body 1.
In the research process, the inventor finds that the holding angle of the existing intervertebral fusion device is mostly vertical (along the anteroposterior direction of the fusion device), and more anterior cervical tissues need to be stripped in the operation. In order to solve the problem, as shown in fig. 2, the rear end of the fusion cage body 1 of the present invention may be provided with a pair of clamping grooves 16, and an included angle α between a clamping angle direction (indicated by a black arrow in fig. 2) of the pair of clamping grooves 16 and a sagittal plane of a human body (i.e., a central line M of the fusion cage body 1) is 15 to 25 degrees, so that the anterior cervical tissue can be avoided to a certain extent, and soft tissue injury during operation can be reduced.
In order to improve the mechanical property and osteogenesis capacity of the fusion cage and increase the stability of the cervical vertebra, the fusion cage main body 1 is preferably made of a high-strength absorbable composite material. In order to conveniently prepare the fusion cage, the fusion cage body 1 can be formed by injection molding, compression molding, 3D printing or machining and the like.
Continuing as shown in fig. 2, the inside development sign 17 that can be equipped with of both sides of fusing ware main part 1, development sign 17 is absorbable material, can be convenient for like this the postoperation survey fuse the ware the position and fuse the condition, and development sign 17 can not remain in the patient, does not have the risk of migration. The development mark 17 can be made of absorbable magnesium or alloy material thereof, and the shape of the development mark can be needle, sheet, oval bead and the like. The developing marks 17 can be injected into the sidewall of the fusion cage body 1 and are symmetrically arranged.
The utility model discloses a use can refer to as follows:
when the fusion cage is used, the holding instrument is used for holding the pair of holding grooves 16 at the rear end of the fusion cage body 1, the holding instrument is adjusted to enable the included angle between the axis of the holding instrument and the sagittal plane of a human body to be 15-25 degrees, then the fusion cage body 1 is implanted into an intervertebral disc, the position of the fusion cage is adjusted through the holding instrument, the holding instrument is removed, the fusion cage is left in the intervertebral disc, and the implantation of the fusion cage is completed; the position of the post-operation fusion device and the fusion condition can be judged according to the CT development of the development identifier 17.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an interbody fusion cage, its characterized in that, includes the fusion cage main part, the fusion cage main part has vertical bone grafting window, be equipped with vertical annular partition portion in the bone grafting window, center on in the bone grafting window annular partition portion is equipped with two at least vertical reinforcing plates.
2. An intersomatic cage according to claim 1, characterized in that the number of reinforcing plates is at least 3 and is uniformly distributed.
3. An intersomatic cage according to claim 1 or 2, wherein the upper and/or lower surface of the cage body is provided with sheet-like retaining teeth extending vertically and along the length of the cage body.
4. An intersomatic cage according to claim 3, characterized in that the number of plate-like retaining teeth is 3, one of which is located in the middle of the front end of the cage body and the other two of which are located on either side of the rear end of the cage body.
5. An intersomatic cage according to claim 3, characterized in that the plate-like retaining teeth are integrally formed with the cage body.
6. An intersomatic cage according to claim 3, wherein the upper and/or lower surface of the cage body is provided with protruding teeth.
7. An intersomatic cage according to claim 1 or 2, characterized in that the cage body is provided at its rear end with a pair of holding grooves having an angle of 15-25 ° to the sagittal plane of the human body.
8. An intersomatic cage according to claim 1 or 2, wherein the cage body is of an absorbable material and/or is injection moulded, compression moulded, 3D printed or machined.
9. An intersomatic cage according to claim 1 or 2, characterized in that the cage body is internally provided with visualization indicators on both sides, which are of resorbable material.
10. The intersomatic cage of claim 9, wherein the visualization marker is a magnesium or magnesium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123055190.1U CN217286192U (en) | 2021-12-07 | 2021-12-07 | Intervertebral fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123055190.1U CN217286192U (en) | 2021-12-07 | 2021-12-07 | Intervertebral fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217286192U true CN217286192U (en) | 2022-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123055190.1U Active CN217286192U (en) | 2021-12-07 | 2021-12-07 | Intervertebral fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217286192U (en) |
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2021
- 2021-12-07 CN CN202123055190.1U patent/CN217286192U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230428 Address after: 100194 G356, Floor 3, Building 1, Yard 9, Chengwan Street, Haidian District, Beijing Patentee after: Beijing natong Medical Technology Holding Co.,Ltd. Address before: 100191 No. 49 Garden North Road, Beijing, Haidian District Patentee before: PEKING University THIRD HOSPITAL (PEKING UNIVERSITY THIRD CLINICAL MEDICAL College) |