CN214857846U - Atlas lateral mass prosthesis - Google Patents
Atlas lateral mass prosthesis Download PDFInfo
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- CN214857846U CN214857846U CN202120378943.3U CN202120378943U CN214857846U CN 214857846 U CN214857846 U CN 214857846U CN 202120378943 U CN202120378943 U CN 202120378943U CN 214857846 U CN214857846 U CN 214857846U
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- prosthesis
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- lateral mass
- prosthesis body
- atlas
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- 210000000988 bone and bone Anatomy 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 12
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 210000003128 head Anatomy 0.000 abstract description 15
- 210000001154 skull base Anatomy 0.000 abstract description 11
- 230000004927 fusion Effects 0.000 abstract description 10
- 206010010356 Congenital anomaly Diseases 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 210000002632 atlanto-axial joint Anatomy 0.000 abstract description 2
- 238000002513 implantation Methods 0.000 abstract 1
- 210000003625 skull Anatomy 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 2
- 210000003800 pharynx Anatomy 0.000 description 2
- 206010023509 Kyphosis Diseases 0.000 description 1
- 208000007623 Lordosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 108020001507 fusion proteins Proteins 0.000 description 1
- 102000037865 fusion proteins Human genes 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000011269 treatment regimen Methods 0.000 description 1
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Abstract
The application provides an atlas lateral mass prosthesis, which solves the technical problems that the existing surgical instruments and implantation devices are not suitable for treating congenital skull base depression and have poor reduction effect; the bone grafting prosthesis comprises a prosthesis body which is approximately cuboid, wherein bone grafting holes which penetrate through the prosthesis body up and down are formed in the prosthesis body; the prosthesis body is provided with a cone head section and a sawtooth section from front to back, and the length of the cone head section is smaller than that of the sawtooth section; the front end part of the conical head section is an arc-shaped surface, and the upper surface and the lower surface of the conical head section gradually contract from back to front; the sawtooth section becomes thinner gradually from front to back, and the upper surface and the lower surface of the sawtooth section are provided with dentations. The application is widely applied to the technical field of atlas lateral mass reconstruction and atlantoaxial joint fusion.
Description
Technical Field
The present application relates to an atlas prosthesis, and more particularly, to an atlas lateral mass prosthesis.
Background
Congenital depressed skull atlas dislocation is high in occurrence in China, the atlas height is lost due to the most common disease because of congenital atlas fusion, and the occipital condyle directly forms joints with the superior articular surface of the axis, so that the axis shifts towards the side of the head, and the skull base is depressed. Partial depression of the skull base causes the dislocation of the atlantoaxial due to the forward slip of the occipital condyle caused by the deformity of the superior articular surface of the occipital condyle and the epistropheus.
The most effective treatment strategy for the dislocation of the atlantoaxial in the basis of skull depression is to spread between the occipital condyle and the superior articular surface of the axis, implant a prosthesis with the same height as the lateral mass of the atlas, shift the axis to the caudal side, and reposition the basis skull depression. For cases with syndroma atlantoaxial dislocation, an internal fixation system can be further applied for reduction.
In 2004 and 2005, Goel et al reported in succession that the fusion cage was implanted in the side joint to reposition the skull base depression and the atlantoaxial dislocation, increased the atlantoaxial interarticular height, compensated the height of the atlas lateral mass and the missing atlas lateral mass after occipital fusion, could effectively reposition the skull base depression and the atlantoaxial dislocation, and achieved a certain therapeutic effect. However, the inter-joint fusion cage used by Goel is self-made, so that the application range cannot be popularized. In addition, Lepinkay reported in 2008 the development of an atlantoaxial intervertebral joint cage. The main problem of the research is that the research results obtained by taking normal bone specimens and normal human thin-layer CT data as research objects are difficult to apply to BI-AAD patients with severe deformity of lateral joints.
Because of the lack of special atlas lateral mass prosthesis, a lumbar fusion cage of 23mm, 9mm in width and 6mm to 9mm in height is still adopted clinically. Although the atlas and axis posterior convexity deformity and the skull and neck angle of the patient are obviously improved after the operation, the follow-up symptom after the operation is obviously improved. But the shape and the size of the fusion cage are not proper, so that the resetting effect is influenced.
Disclosure of Invention
In order to solve the technical problem, the technical scheme adopted by the application is as follows: the atlas lateral mass prosthesis is suitable for congenital skull base depression and has good restoration effect, and comprises: the bone grafting prosthesis comprises a prosthesis body which is approximately cuboid, wherein bone grafting holes which penetrate through the prosthesis body up and down are formed in the prosthesis body; the prosthesis body is provided with a cone head section and a sawtooth section from front to back, and the length of the cone head section is smaller than that of the sawtooth section; the front end part of the conical head section is an arc-shaped surface, and the upper surface and the lower surface of the conical head section gradually contract from back to front; the sawtooth section becomes thinner gradually from front to back, and the upper surface and the lower surface of the sawtooth section are provided with dentations.
Preferably, the included angle between the upper surface and the lower surface of the sawtooth section is a front convex angle, and the angle of the front convex angle is 0 °, 5 °, 10 ° or 20 °.
Preferably, the prosthesis body is further provided with a transition sawtooth section, the transition sawtooth section is located between the cone section and the sawtooth section, and the upper surface and the lower surface of the transition sawtooth section are provided with dentations.
Preferably, the width of the prosthesis body is 6mm to 10 mm.
Preferably, the length of the prosthesis body is 15mm to 18 mm.
Preferably, the height of the trailing edge of the prosthesis body is 5mm to 12 mm.
Preferably, the prosthesis body is provided with a through hole which is communicated from left to right.
Preferably, a tantalum wire marking line is placed at the middle point of the arc-shaped surface and the middle point of the side surface of the prosthesis body.
Preferably, the rear surface of the prosthesis body is provided with a connection screw hole.
The beneficial effects of the utility model, to congenital skull base subsides, supply the atlas lateral mass height that loses, the congenital skull base subsides that resets, and the shape size accords with patient's demand, can not oppress patient's pharynx back wall, and the travelling comfort is good.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic view of the structure of the present invention;
fig. 3 is a left side view structure diagram of the present invention;
FIG. 4 is a schematic side view of the utility model in use;
fig. 5 is a rear view of the utility model.
The symbols in the drawings illustrate that:
1. bone grafting holes; 2. a cone section; 3. a sawtooth section; 4. an arc-shaped surface; 5. a through hole; 6. a connecting screw hole; 7. a transition serration section; 8. the atlas; 9. an axis; A. a forward lobe; 10. a prosthesis.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The atlas lateral mass prosthesis provided in the embodiments of the present application will now be described. As shown in fig. 1 to 3, the atlas lateral mass prosthesis comprises a prosthesis body which is approximately a cuboid, wherein the prosthesis body is provided with bone grafting holes 1 which penetrate through the prosthesis body up and down; the prosthesis body is provided with a cone head section 2 and a sawtooth section 3 from front to back, and the length of the cone head section 2 is smaller than that of the sawtooth section 3; the front end part of the cone head section 2 is an arc surface 4, and the upper surface and the lower surface of the cone head section 2 are gradually contracted from back to front; in order to correct the atlantoaxial joint kyphosis and restore the physiological lordosis, the sawtooth section 3 is gradually thinned from the front to the back, and the upper surface and the lower surface of the sawtooth section 3 are provided with dentations to increase the friction force of the prosthesis 10 in the joint clearance and prevent the prosthesis 10 from shifting.
The included angle between the upper surface and the lower surface of the sawtooth section 3 is a forward convex angle A, and the angle of the forward convex angle A is 0 degree, 5 degrees, 10 degrees or 20 degrees.
The prosthesis body is also provided with a transition sawtooth section 7, the transition sawtooth section 7 is positioned between the conical head section 2 and the sawtooth section 3, the upper surface and the lower surface of the transition sawtooth section 7 are provided with tooth-shaped protrusions, the end parts of the tooth-shaped protrusions are obtuse angles, the friction force is lower than that of the sawtooth section 3, and the transition effect is achieved. The sum of the lengths of the transition section and the conical head section 2 is less than the length of the sawtooth section 3, and the thickest position of the prosthesis 10 is still at the middle and front position.
The width of the prosthesis body is 6mm-10mm, and the width of the prosthesis body can be 6mm, 8mm or 10 mm. The length of the prosthesis body is 15mm-18mm, the height of the rear edge of the prosthesis body is 5mm-12mm, and different heights are suitable for patients with different skull base depression severity degrees. When satisfying patient's demand, can not oppress patient's pharynx back wall, patient's travelling comfort is good, and it is effectual to reset.
The prosthesis body is provided with a through hole 5 which is communicated left and right, thereby facilitating the growth of blood vessels after operation and improving the probability of bone fusion.
In order to facilitate the perspective observation during and after the operation, a tantalum wire marking line is arranged at the middle point of the arc-shaped surface 4 and the middle point of the side surface of the prosthesis body.
The rear surface of the prosthesis body is provided with a connecting screw hole 6 for connecting installation instruments and facilitating the placement of the prosthesis body in an operation area.
As shown in figures 4 and 5, during the use, will the utility model discloses the prosthetic goods 10 is implanted atlas 8, dentata 9 both sides joint clearance, can play the effect of fulcrum when carrying out cantilever technical operation in the art, forms strong support to the basis cranii depression that resets and the dislocation of atlantoaxial, prevents to reset and loses, resets the horizontal dislocation of atlantoaxial, promotes to form strong osseous fusion between the articular surface on occipital condyle and dentata 9. The utility model can restore the congenital skull base depression by the fusion of the atlantoaxial pillow, and the shape and the size of the fusion protein meet the requirements of the patient, can not press the pharyngeal posterior wall of the patient, and has good comfort.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (9)
1. An atlas lateral mass prosthesis, comprising: the bone grafting prosthesis comprises a prosthesis body which is approximately cuboid, wherein bone grafting holes which penetrate through the prosthesis body up and down are formed in the prosthesis body; the prosthesis body is provided with a cone head section and a sawtooth section from front to back, and the length of the cone head section is smaller than that of the sawtooth section; the front end part of the conical head section is an arc-shaped surface, and the upper surface and the lower surface of the conical head section gradually contract from back to front; the sawtooth section becomes thinner gradually from front to back, and the upper surface and the lower surface of the sawtooth section are provided with dentations.
2. The atlas lateral mass prosthesis of claim 1, wherein: an included angle between the upper surface and the lower surface of the sawtooth section is a front convex angle, and the angle of the front convex angle is 0 degree, 5 degrees, 10 degrees or 20 degrees.
3. The atlas lateral mass prosthesis of claim 1 or 2, wherein: the prosthesis body is further provided with a transition sawtooth section, the transition sawtooth section is located between the cone head section and the sawtooth section, and the upper surface and the lower surface of the transition sawtooth section are provided with dentations.
4. The atlas lateral mass prosthesis of claim 1 or 2, wherein: the width of the prosthesis body is 6mm-10 mm.
5. The atlas lateral mass prosthesis of claim 4, wherein: the length of the prosthesis body is 15mm-18 mm.
6. The atlas lateral mass prosthesis of claim 5, wherein: the height of the rear edge of the prosthesis body is 5mm-12 mm.
7. The atlas lateral mass prosthesis of claim 1, wherein: the prosthesis body is provided with a through hole which is communicated from left to right.
8. The atlas lateral mass prosthesis of claim 1, wherein: and tantalum metal wire marking lines are placed in the middle points of the arc-shaped surface and the side surface of the prosthesis body.
9. The atlas lateral mass prosthesis of claim 1, wherein: the rear surface of the prosthesis body is provided with a connecting screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120378943.3U CN214857846U (en) | 2021-02-19 | 2021-02-19 | Atlas lateral mass prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120378943.3U CN214857846U (en) | 2021-02-19 | 2021-02-19 | Atlas lateral mass prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214857846U true CN214857846U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120378943.3U Active CN214857846U (en) | 2021-02-19 | 2021-02-19 | Atlas lateral mass prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214857846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998916A (en) * | 2021-02-19 | 2021-06-22 | 陈赞 | Atlas lateral mass prosthesis |
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2021
- 2021-02-19 CN CN202120378943.3U patent/CN214857846U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998916A (en) * | 2021-02-19 | 2021-06-22 | 陈赞 | Atlas lateral mass prosthesis |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220128 Address after: No.45, Changchun Street, Xicheng District, Beijing 100032 Patentee after: XUANWU HOSPITAL CAPITAL MEDICAL University Address before: No. 501, unit 6, yard 6, Shanxi Street, Xicheng District, Beijing 100032 Patentee before: Chen Zan |