CN213190012U - Anterior cervical miniature fixing plate and fixing system - Google Patents
Anterior cervical miniature fixing plate and fixing system Download PDFInfo
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- CN213190012U CN213190012U CN202020873465.9U CN202020873465U CN213190012U CN 213190012 U CN213190012 U CN 213190012U CN 202020873465 U CN202020873465 U CN 202020873465U CN 213190012 U CN213190012 U CN 213190012U
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Abstract
The utility model discloses a cervical vertebra anterior miniature fixing plate and a fixing system, belonging to the technical field of orthopedic implants, wherein the cervical vertebra anterior miniature fixing plate comprises a plate body which is used for being implanted between an upper vertebral body and a lower vertebral body and preventing a fusion device from dropping off, and a first screw hole with an upward inclined axis is arranged on the plate body and used for fixing the upper vertebral body; the lower side of the plate body is provided with an L-shaped fixing leg, the L-shaped fixing leg comprises a transverse plate part and a vertical plate part, the transverse plate part is used for being in contact with the upper edge of the lower vertebral body, the vertical plate part is used for being in contact with the front edge of the lower vertebral body, and the vertical plate part is provided with a second screw hole used for being fixed to the lower vertebral body. In the utility model, the anterior cervical micro-fixation plate is a low incisura blocking bone plate, the invasion tissue area of the bone plate is smaller than that of the conventional anterior cervical plate 2/3, the tissue irritation is reduced, and the problem of dysphagia of patients can be solved; and the miniature fixed plate of anterior cervical spine can use with the cooperation of the anterior cervical fusion cage of conventionality to guaranteed sufficient bone grafting volume, stability is good.
Description
Technical Field
The utility model relates to an orthopedic implant technical field especially indicates a miniature fixed plate of anterior cervical spine and fixed system.
Background
The fusion operation of anterior cervical intervertebral is a basic technique for treating cervical spondylosis, and the conventional method is that after the cervical intervertebral disc is treated, a bone grafting fusion device is placed into the treated cervical intervertebral disc, and then an anterior cervical nail plate is fixed on a vertebral body to keep the initial stability of the cervical vertebra. The method has the advantages that the notch of the bone plate is high, the bone plate is not easy to shape, the bone plate is not well attached to the front edge of the vertebral body, irritation is generated to surrounding tissues, and the swallowing difficulty is easily caused.
The zero-notch fusion cage is another surgical technique for treating cervical vertebra diseases, and can solve the problem that the bone plate protrudes out of the front edge of the vertebral body to cause swallowing difficulty. However, the existing zero-incisura fusion cage is not suitable for patients with cervical vertebra instability, is only suitable for the condition of 1-2 segment intervertebral disc lesions, has less bone grafting amount and poor stability, and is very difficult to implant a screw with an angle at the lower part and inconvenient in operation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a miniature fixed plate of anterior cervical spine and fixed system that can solve patient's difficulty of swallowing problem, stability is good.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
in one aspect, a cervical anterior miniature fixation plate is provided, comprising a plate body for implantation between an upper vertebral body and a lower vertebral body to prevent a fusion cage from escaping, wherein:
a first screw hole with an upward inclined axis is arranged on the plate body and is used for being fixed to an upper vertebral body;
the lower part of the plate body is provided with an L-shaped fixing leg, the L-shaped fixing leg comprises a transverse plate part and a vertical plate part, the transverse plate part is connected with the plate body and is used for being in contact with the upper edge of a lower vertebral body, the vertical plate part is connected with the transverse plate part and is used for being in contact with the front edge of the lower vertebral body, and a second screw hole used for being fixed to the lower vertebral body is formed in the vertical plate part.
Furthermore, after the anterior cervical spine miniature fixing plate is implanted into a human body, the front surface of the plate body is lower than or flush with the front surfaces of the upper vertebral body and the lower vertebral body.
Further, the height of the plate body is lower than that of the fusion device.
Further, the axis of the second screw hole is perpendicular to the front edge of the lower vertebral body.
Furthermore, the first screw holes are two and are respectively located on the left side and the right side of the plate body.
Furthermore, the L-shaped fixing legs are two and are respectively located on the left side and the right side of the lower portion of the plate body, and one second screw hole is formed in the vertical plate portion of each L-shaped fixing leg.
Further, the length of the transverse plate part is 0.5-3 mm.
Further, the vertical plate part has a radian corresponding to the front edge of the lower vertebral body.
Further, the radian radius of the arc between the left side and the right side of the vertical plate part in the horizontal direction is 100-300mm, and the radian radius of the arc between the upper end and the lower end of the vertical plate part in the vertical direction is 20-60 mm.
In another aspect, an anterior cervical fixation system is provided, which comprises a fusion cage and the anterior cervical micro-fixation plate.
The utility model discloses following beneficial effect has:
in the utility model, the anterior cervical micro-fixation plate is a low incisura blocking bone plate, the invasion tissue area of the bone plate is smaller than that of the conventional anterior cervical plate 2/3, the tissue irritation is reduced, and the problem of dysphagia of patients can be solved; and the miniature fixed plate of anterior cervical spine can use with the cooperation of the anterior cervical spine fusion cage of conventionality to guaranteed sufficient bone grafting volume, be applicable to all sections of lower cervical vertebra, stability is very good.
Drawings
Fig. 1 is a schematic front structural view of the anterior cervical spine miniature fixing plate of the present invention;
fig. 2 is a schematic perspective view of the anterior cervical micro fixation plate shown in fig. 1;
fig. 3 is a schematic view illustrating a use state of the anterior cervical micro fixation plate shown in fig. 1.
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.
In one aspect, the present invention provides a anterior cervical miniature fixation plate 1, as shown in fig. 1-3, comprising a plate body 11 for implantation between an upper vertebral body 2 and a lower vertebral body 3 to prevent a fusion cage 4 from escaping, wherein:
the plate body 11 is provided with a first screw hole 12 with an upward inclined axis for fixing to the upper vertebral body 2, and the upward inclined angle of the axis can be flexibly set according to the requirement, such as 30-60 degrees;
an L-shaped fixing leg 13 is arranged below the plate body 11, the L-shaped fixing leg 13 comprises a transverse plate portion 131 connected with the plate body 11 and used for contacting with the upper edge of the lower vertebral body and a vertical plate portion 132 connected with the transverse plate portion 131 and used for contacting with the front edge of the lower vertebral body, and a second screw hole 14 used for being fixed to the lower vertebral body 3 is arranged on the vertical plate portion 132.
It can be understood that, on the one hand, the middle plate body of the utility model is implanted between the upper vertebral body and the lower vertebral body so as to be hidden between the upper vertebral body and the lower vertebral body, and preferably, the front surface of the plate body is lower than or flush with the front surfaces of the upper vertebral body and the lower vertebral body after the cervical vertebra anterior miniature fixing plate is implanted into the human body, so as to reduce irritation to the surrounding tissues; on the other hand, the utility model discloses a fixed leg of L shape rather than forming the whole downwardly extending of plate body L shape extension fixed plate, the form size of this kind of fixed leg is less relatively, can show the area that reduces whole hone lamella, further reduces the tissue and irritates. The width of the L-shaped fixing leg is only required to be provided with a second screw hole and ensure the fixing strength.
In the anterior cervical fusion operation, fuse the back of 4 implants of ware, the rear end is placed the utility model discloses a miniature fixed plate 1 of anterior cervical, prevent to fuse ware 4 and withdraw from, then twist screw 6 in first screw hole 12 and second screw hole 14 and fix the board to lower centrum 2, 3 to play stable effect.
To sum up, the anterior cervical spine miniature fixing plate of the utility model is a low incisura blocking bone plate, the invasion tissue area of the bone plate is smaller than that of the conventional anterior cervical plate 2/3, the tissue irritation is reduced, and the problem of dysphagia of patients can be solved; and the miniature fixed plate of anterior cervical spine can use with the cooperation of the anterior cervical spine fusion cage of conventionality to guaranteed sufficient bone grafting volume, be applicable to all sections of lower cervical vertebra, stability is very good.
The utility model discloses in, the miniature fixed plate of anterior cervical spine 1 mainly plays the effect that prevents to fuse 4 and deviate from, improve stability, as for the effect of supporting the upper and lower centrum, still undertakes by fusing 4, and the miniature fixed plate of anterior cervical spine 1 need not to undertake, so the high H of plate body 11 (do not contain L shape fixed leg) preferred height that is less than fuse 4. Moreover, the anterior cervical miniature fixing plate 1 and the fusion cage 4 can be disconnected, and the two are not fixedly connected (such as by screws) so as to adapt to the conventional fusion cage on the market.
Considering that the angled screws of the fusion device or the sublaminar zone are easily affected by the mandible and are difficult to implant in the prior art, the axis of the second screw hole 14 is preferably perpendicular to the front edge of the inferior vertebral body, so that the nail placement is very convenient and the indications are wider.
The first screw holes 12 are used to fix the plate body 11 to the upper vertebral body 2, and may be one or more, but considering that the plate body 11 has a limited area, in order to secure the fixation, the first screw holes 12 are preferably two and located on the left and right sides of the plate body 11.
The fixed leg 13 of L shape is used for fixing plate body 11 to lower centrum 3, and its quantity can be one and be located plate body 11 below intermediate position, also can be a plurality of and evenly distributed in plate body 11 below, however for taking into account and reducing the tissue irritation and fixed fastness, the fixed leg 13 of L shape is preferred two and is located the below left and right sides of plate body 11 respectively, all is provided with one on the riser portion 132 of every L shape fixed leg 13 second screw hole 14.
The utility model discloses in, plate body 11 is hidden between upper vertebral body 2 and lower vertebral body 3, and the centrum leading edge under the vertical plate portion 132 contact of the fixed leg 13 of L shape, so the horizontal plate portion 131 of the fixed leg 13 of L shape plays the connection extension effect between plate body 11 and vertical plate portion 132, and its length L (the distance of fore-and-aft direction in the horizontal plane) can be selected as required in a flexible way, for example can be 0.5-3 mm.
Furthermore, the vertical plate 132 of the L-shaped fixing leg 13 may have a curvature corresponding to the front edge of the lower vertebral body to better fit the front edge of the lower vertebral body, so that the fixing is more secure. Specifically, the arc radius of the arc between the left and right sides of the vertical plate 132 in the horizontal direction may be 100-300mm, and the arc radius of the arc between the upper and lower ends of the vertical plate 132 in the vertical direction may be 20-60 mm.
The L-shaped fixing leg 13 and the plate body 11 may be separate structures and connected together by means of insertion, clamping, pin connection, etc., however, in order to reduce the cost, the two are preferably integrated structures.
On the other hand, the utility model provides a cervical vertebra way of escape fixing system still, as shown in fig. 3, including fusing ware 4, and foretell cervical vertebra way of escape miniature fixed plate 1, because the structure of cervical vertebra way of escape miniature fixed plate 1 is the same with last, and it is no longer repeated here.
In the anterior cervical spine fixing system, the anterior cervical spine miniature fixing plate is a low incisura blocking bone plate, the invasion tissue area of the bone plate is smaller than that of the conventional anterior cervical spine plate 2/3, the irritation of tissues is reduced, and the problem of dysphagia of a patient can be solved; and the fusion cage can adopt a conventional anterior cervical fusion cage, thereby ensuring sufficient bone grafting amount and having very good stability.
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 a miniature fixed plate of anterior cervical spine which characterized in that, includes the plate body that is used for implanting between the superior vertebra body and the inferior vertebra body and prevents that the fuse from deviating from, wherein:
a first screw hole with an upward inclined axis is arranged on the plate body and is used for being fixed to an upper vertebral body;
the lower part of the plate body is provided with an L-shaped fixing leg, the L-shaped fixing leg comprises a transverse plate part and a vertical plate part, the transverse plate part is connected with the plate body and is used for being in contact with the upper edge of a lower vertebral body, the vertical plate part is connected with the transverse plate part and is used for being in contact with the front edge of the lower vertebral body, and a second screw hole used for being fixed to the lower vertebral body is formed in the vertical plate part.
2. The anterior cervical micro fixation plate of claim 1, wherein the anterior surface of the plate body is lower than or flush with the anterior surfaces of the superior and inferior vertebral bodies after implantation in a human body.
3. The anterior cervical micro fixation plate of claim 1, wherein the plate body has a height that is lower than a height of the cage.
4. The anterior cervical micro fixation plate of claim 1, wherein the axis of the second screw hole is perpendicular to the inferior vertebral body anterior edge.
5. The anterior cervical micro fixation plate of claim 1, wherein two first screw holes are provided on each of the left and right sides of the plate body.
6. The anterior cervical microphysis plate of claim 5, wherein two L-shaped fixation legs are respectively positioned at the left and right sides below the plate body, and one second screw hole is disposed on the vertical plate portion of each L-shaped fixation leg.
7. The anterior cervical micro fixation plate of claim 1, wherein the length of the transverse plate portion is 0.5-3 mm.
8. The anterior cervical micro fixation plate of claim 1, wherein the vertical plate portion has a curvature that conforms to the anterior edge of the inferior vertebral body.
9. The anterior cervical micro-fixation plate of claim 8, wherein the arc radius of the arc between the left and right sides of the vertical plate in the horizontal direction is 100-300mm, and the arc radius of the arc between the upper and lower ends of the vertical plate in the vertical direction is 20-60 mm.
10. An anterior cervical fixation system comprising a fusion cage, further comprising an anterior cervical micro fixation plate of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873465.9U CN213190012U (en) | 2020-05-22 | 2020-05-22 | Anterior cervical miniature fixing plate and fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873465.9U CN213190012U (en) | 2020-05-22 | 2020-05-22 | Anterior cervical miniature fixing plate and fixing system |
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| Publication Number | Publication Date |
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| CN213190012U true CN213190012U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020873465.9U Active CN213190012U (en) | 2020-05-22 | 2020-05-22 | Anterior cervical miniature fixing plate and fixing system |
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| CN (1) | CN213190012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469462A (en) * | 2022-04-08 | 2022-05-13 | 北京大学第三医院（北京大学第三临床医学院） | Self-stabilizing atlantoaxial fusion cage |
-
2020
- 2020-05-22 CN CN202020873465.9U patent/CN213190012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469462A (en) * | 2022-04-08 | 2022-05-13 | 北京大学第三医院（北京大学第三临床医学院） | Self-stabilizing atlantoaxial fusion cage |
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