CN211381997U - Intervertebral fusion cage - Google Patents
Intervertebral fusion cage Download PDFInfo
- Publication number
- CN211381997U CN211381997U CN201921928382.9U CN201921928382U CN211381997U CN 211381997 U CN211381997 U CN 211381997U CN 201921928382 U CN201921928382 U CN 201921928382U CN 211381997 U CN211381997 U CN 211381997U
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- Prior art keywords
- layer
- fusion cage
- skin layer
- lumbar
- length direction
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- 230000004927 fusion Effects 0.000 title abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 19
- 210000002615 epidermis Anatomy 0.000 claims abstract description 14
- 210000003491 skin Anatomy 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract description 4
- 238000010146 3D printing Methods 0.000 claims description 4
- 229920000249 biocompatible polymer Polymers 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002980 postoperative effect Effects 0.000 abstract description 3
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 4
- 208000003618 Intervertebral Disc Displacement Diseases 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 206010041591 Spinal osteoarthritis Diseases 0.000 description 1
- 208000036319 cervical spondylosis Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000005260 human cell Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 206010025005 lumbar spinal stenosis Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000276 sedentary effect Effects 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 208000005801 spondylosis Diseases 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
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Abstract
The utility model relates to an intervertebral fusion ware sets up between lumbar vertebrae, include: a skin layer and a filler; the skin layer covers the outer surface of the filling part; the shape of the epidermal layer is matched with that of the lumbar vertebra; the surface layer is in a network shape; the filling part comprises a plurality of hollow hexagonal columns which are connected with each other, and the length direction of each hollow hexagonal column and the length direction of the lumbar vertebra form a preset inclination angle. The utility model provides an interbody fusion cage is through setting up the filling portion in the epidermal layer that has network column structure for interbody fusion cage has better elasticity and the surface that fuses mutually with the lumbar vertebrae bone, realizes that patient's postoperative bone structure fuses well, and the treatment effect that the durability is good through setting up the filling portion into hollow hexagon cylinder in addition, realizes the hollowization of filling portion, reduces the quality of whole interbody fusion cage by a wide margin.
Description
Technical Field
The utility model relates to an orthopedics medical instrument field especially relates to an interbody fusion cage.
Background
Diseases such as cervical spondylosis, cervical intervertebral disc protrusion, lumbar spinal stenosis and the like are widely spread among people, and people previously thought to be diseases which are only obtained by old people, are gradually younger, and are particularly prominent in white-collar class in front of a computer which is sedentary. In the case of lumbar disc herniation, when the intervertebral disc herniation presses the spinal canal to exceed 1/3, the conditions of numbness, difficulty in movement, even weakness of stool and urine occur, the patient becomes unstable in sitting and standing, pain occurs in any posture, conservative treatment methods such as drug treatment and physical therapy have no effect, and the lumbar disc herniation tissue must be implanted through an operation to perform vertebral fusion for the patient.
Intervertebral fusion devices are implanted between vertebrae to induce fusion of the vertebrae together by vertebral fusion, replacing the original natural lumbar intervertebral disc to eliminate the focus. However, the existing intervertebral fusion cage has the disadvantages of excessive mass, complex structure, mismatching of elasticity and rigidity, poor durability, short recurrence period of patients, re-operation, and increased physiological pain and economic loss of the patients.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an intervertebral cage that addresses at least one of the problems noted above.
An intervertebral cage for placement between lumbar vertebrae, comprising: a skin layer and a filler; the skin layer covers the outer surface of the filling part; the shape of the epidermal layer is matched with that of the lumbar vertebra; the surface layer is in a network shape; the filling part comprises a plurality of hollow hexagonal columns which are connected with each other, and the length direction of each hollow hexagonal column and the length direction of the lumbar vertebra form a preset inclination angle.
In one embodiment, a plurality of through holes are formed in the epidermis layer along the length direction of the lumbar vertebrae.
In one embodiment, a plurality of elastic vacuum inner cavities are distributed in the filling part.
In one embodiment, the skin layer and the filling portion are integrally formed by 3D printing.
In one embodiment, the skin layer is made of a biocompatible polymer material.
The utility model provides an interbody fusion cage is through setting up the filling portion in the epidermal layer that has network column structure for interbody fusion cage has better elasticity and the surface that fuses mutually with the lumbar vertebrae bone, realizes that patient's postoperative bone structure fuses well, and the treatment effect that the durability is good through setting up the filling portion into hollow hexagon cylinder in addition, realizes the hollowization of filling portion, reduces the quality of whole interbody fusion cage by a wide margin.
Drawings
FIG. 1 is a cross-sectional view of an intervertebral cage according to an embodiment of the invention;
fig. 2 is a cross-sectional view of an intervertebral cage according to another embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, the present application provides an intervertebral cage disposed between lumbar vertebrae, as shown in fig. 1, comprising: a skin layer 100 and a filler 200; the skin layer 100 covers the outer surface of the filling part 200; the shape of the epidermis layer 100 is matched with that of the lumbar vertebra; the skin layer 100 is a network; the filling part 200 includes a plurality of hollow hexagonal cylinders connected to each other, and the length direction of the hollow hexagonal cylinders and the length direction of the lumbar vertebrae form a predetermined inclination angle. The specific shape of the epidermis layer 100, that is, the surface layer of the intervertebral cage, is not a regular plane or a curved surface, and the specific shape is specifically set according to the lumbar vertebrae position to be filled by the intervertebral cage. The intervertebral fusion device is arranged between two lumbar vertebrae to replace the intervertebral disc with pathological changes. The epidermis layer 100 may be in a mesh shape, so as to facilitate the human cell tissue to be fused into the epidermis, so that the interbody fusion cage can be stably and flexibly disposed in the human body. The hollow hexagonal column can have certain elasticity along the hexagonal section direction, so that the interbody fusion cage has certain elasticity and is suitable for possible lumbar vertebra space change. The magnitude of the elasticity is determined by those skilled in the relevant field according to the elasticity of the manufacturing material and the arrangement of the hexagonal hole structure, which is not the key point of the invention of the present application and is not described in detail.
The utility model provides an interbody fusion cage is through setting up filling portion 200 in the epidermal layer 100 that has network column structure for interbody fusion cage has better elasticity and the surface that fuses mutually with the lumbar vertebrae bone, and it is good to realize patient's postoperative bone structure integration nature, and the treatment effect that the durability is good through setting up filling portion 200 into hollow hexagon cylinder in addition, realizes the hollowization of filling portion 200, reduces the quality of whole interbody fusion cage by a wide margin.
In one possible embodiment, the epidermis layer 100 is provided with a plurality of through holes along the length of the lumbar vertebrae.
In another possible embodiment, as shown in fig. 2, a plurality of resilient vacuum interior chambers 210 are distributed within the filling section 200. The retractability of the intervertebral fusion device is further improved by arranging a plurality of elastic vacuum inner cavities 210 in the filling part 200, and during specific preparation, the elastic inner cavities 210 which are vacuumized in advance can be placed into the filling part 200, or can be placed into a production mold before the filling part 200 is produced. The degree of vacuum of the elastic vacuum inner cavity 210 need not be too high, but only needs to be slightly less than one atmosphere, for example, 0.09MPa to 0.095 MPa.
In one possible embodiment, the skin layer 100 and the filling portion 200 are integrally formed by 3D printing. By adopting the existing 3D printing technology, objects with complex shapes and various material compositions can be printed, and the personalized and accurate intervertebral fusion cage is provided for patients.
In one preferred embodiment, the epidermal layer 100 is made of a biocompatible polymer material. Such as polylactic acid, polyvinyl alcohol, polytetrafluoroethylene, and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. An intervertebral cage disposed between lumbar vertebrae, comprising: a skin layer and a filler; the skin layer covers the outer surface of the filling part; the shape of the epidermal layer is matched with that of the lumbar vertebra; the surface layer is in a network shape; the filling part comprises a plurality of hollow hexagonal columns which are connected with each other, and the length direction of each hollow hexagonal column and the length direction of the lumbar vertebra form a preset inclination angle.
2. An intersomatic cage according to claim 1, characterized in that the skin layer is provided with a plurality of through holes along the length of the lumbar vertebrae.
3. An intersomatic cage according to claim 1, characterized in that several elastic vacuum inner cavities are distributed in the filler part.
4. An intersomatic cage according to claim 1, characterized in that the skin layer is integrally formed with the filler portion by 3D printing.
5. An intersomatic cage according to claim 1, characterized in that the epidermal layer is made of a biocompatible polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928382.9U CN211381997U (en) | 2019-11-08 | 2019-11-08 | Intervertebral fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928382.9U CN211381997U (en) | 2019-11-08 | 2019-11-08 | Intervertebral fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211381997U true CN211381997U (en) | 2020-09-01 |
Family
ID=72230685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921928382.9U Active CN211381997U (en) | 2019-11-08 | 2019-11-08 | Intervertebral fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211381997U (en) |
-
2019
- 2019-11-08 CN CN201921928382.9U patent/CN211381997U/en active Active
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