CN109223258B - A 3D printed artificial vertebral body system - Google Patents
A 3D printed artificial vertebral body system Download PDFInfo
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- CN109223258B CN109223258B CN201811336239.0A CN201811336239A CN109223258B CN 109223258 B CN109223258 B CN 109223258B CN 201811336239 A CN201811336239 A CN 201811336239A CN 109223258 B CN109223258 B CN 109223258B
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- vertebral body
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- artificial
- layer
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- 239000011664 nicotinic acid Substances 0.000 claims abstract description 55
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000741 silica gel Substances 0.000 claims abstract description 28
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 28
- 238000010146 3D printing Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 19
- 229920001296 polysiloxane Polymers 0.000 claims 3
- 206010019477 Hemivertebra Diseases 0.000 claims 1
- 229940036811 bone meal Drugs 0.000 claims 1
- 239000002374 bone meal Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002513 implantation Methods 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 6
- 230000001771 impaired effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
本发明公开了一种(3D打印)人工椎体系统，涉及医疗用具技术领域。它包括仿生连接椎体顶端和底端均开有蜂窝状的连接层；连接层内均浇筑有连接硅胶层；仿生半椎体顶端中部开有螺纹槽；螺纹槽内螺纹连接有固定螺钉；固定螺钉外侧面沿圆周方向均匀开有竖向的防滑纹；仿生半锥体右端上部开有操作窗口；操作窗口与螺纹槽接通；仿生半椎体顶端开有蜂窝状的浇筑层；浇筑层内浇筑有接触硅胶层；接触硅胶层顶端中部开有连接孔；连接孔与螺纹槽接通。本发明的有益效果是：人工椎体的植入更加方便，硅胶层对椎体进行防护，减小磨损，并具有生理弯度，且不对椎体造成损伤，患者使用更加舒适，安全。
The invention discloses a (3D printing) artificial vertebral body system, which relates to the technical field of medical appliances. It includes a honeycomb-shaped connecting layer at the top and bottom of the bionic connecting vertebral body; a connecting silica gel layer is poured in the connecting layer; a threaded groove is opened in the middle of the top of the bionic semi-vertebral body; a fixing screw is threaded in the threaded groove; The outer surface of the screw is evenly provided with vertical anti-skid lines along the circumferential direction; the upper part of the right end of the bionic semi-cone is provided with an operation window; the operation window is connected with the thread groove; the top of the bionic semi-cone is provided with a honeycomb-shaped pouring layer; A contact silica gel layer is poured; a connection hole is opened in the middle of the top of the contact silica gel layer; the connection hole is connected with the threaded groove. The beneficial effects of the invention are that the implantation of the artificial vertebral body is more convenient, the silica gel layer protects the vertebral body, reduces wear, has a physiological curvature, does not cause damage to the vertebral body, and is more comfortable and safe for patients to use.
Description
Technical Field
The invention relates to the technical field of medical appliances.
Background
Have vertebra impaired back on the backbone, need use artificial vertebral body to change impaired vertebra, and tradition is fixing artificial vertebral body when impaired vertebra department, borrows the pin and fixes artificial vertebral body on adjacent vertebra to restricted artificial vertebral body's activity space, thereby make the backbone department of impaired position stiff, and cause uncomfortable, simultaneously because traditional artificial vertebral body network structure is when installing impaired vertebra department, its network structure can cause the damage to adjacent vertebra equally.
Disclosure of Invention
The invention aims to solve the technical problem of providing a (3D printing) artificial vertebral body system aiming at the technical defects. The implantation of the artificial vertebral body is more convenient, the artificial vertebral body has physiological curvature, and the injury to the vertebral body is avoided, so that the patient can use the artificial vertebral body more comfortably and safely.
The technical scheme adopted by the invention is as follows: providing a (3D printing) artificial vertebral body system, which comprises a vertebral body connecting mechanism and an upper artificial vertebral body mechanism and a lower artificial vertebral body mechanism;
the vertebral body connecting mechanism comprises a bionic connecting vertebral body; honeycomb connecting layers are arranged at the top end and the bottom end of the bionic connecting cone body; a connecting silica gel layer is poured in each connecting layer;
the artificial vertebral body mechanism at the upper part comprises a bionic semi-vertebral body fixedly connected with the connecting silica gel layer at the top end; the middle part of the top end of the bionic hemicentrum is provided with a thread groove; the thread groove is internally threaded with a fixing screw; vertical anti-skid lines are uniformly arranged on the outer side surface of the fixing screw along the circumferential direction; an operation window is arranged at the upper part of the right end of the bionic semi-cone; the operation window is communicated with the thread groove; a honeycomb pouring layer is arranged at the top end of the bionic semi-cone; a contact silica gel layer is poured in the pouring layer; the middle part of the top end of the contact silica gel layer is provided with a connecting hole; the connecting hole is communicated with the thread groove; the artificial vertebral body mechanism at the lower part has the same structure as the artificial vertebral body mechanism at the upper part and is symmetrical up and down.
Further optimizing the technical scheme, the inside of the bionic connecting vertebral body and the inside of the bionic semi-vertebral body of the (3D printing) artificial vertebral body system are both of honeycomb structures; bone powder is filled in the bionic connecting vertebral body and the bionic semi-vertebral body.
Further optimizing the technical scheme, the fixing screw of the (3D printing) artificial vertebral body system is internally provided with a cavity structure; the top end of the fixing screw is provided with an adapting port.
The invention has the beneficial effects that:
when the artificial vertebral body is implanted, the volume of the artificial vertebral body can be adjusted, so that the artificial vertebral body is more convenient, convenient and quick to implant;
the fixing screw is fixed in the adjacent vertebral body through rotating the operation window, the cavity structure in the fixing screw enables sclerotin in the vertebral body to enter the fixing screw and induces the sclerotin to grow in the fixing screw so as to enable the fixing screw to be fixed more firmly, and after the fixing screw is fixed on the vertebral body, the fixing screw enters the adaptive groove, so that a certain moving space is formed between the bionic semi-vertebral body and the vertebral body, the artificial vertebral body is prevented from being too stiff, and the use is more comfortable;
bionic half centrum is fixed the back, the silica gel layer respectively with adjacent centrum contact, the silica gel layer take place rejection with the human body, use safelyr, the silica gel layer fills the space between bionic half centrum and the centrum, reduces the wearing and tearing between artificial centrum and the centrum, makes certain activity volume between bionic artificial centrum and the centrum simultaneously to make artificial centrum have reasonable physiological curvature, and absorb the shock of backbone, use more comfortablely.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic drawing of the structure of the connecting vertebral body mechanism of the present invention;
fig. 3 is a schematic drawing of the structure of the artificial hemi-vertebral body construct of the present invention.
In the figure, 1, a bionic connecting vertebral body; 2. a connecting layer; 3. connecting the silica gel layer; 4. simulating a semi-centrum; 5. a thread groove; 6. a set screw; 7. anti-skid lines; 8. operating a window; 9. pouring a layer; 10. contacting the silica gel layer; 11. connecting holes; 12. an adapter port.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, a (3D printed) artificial vertebral body system comprises a connecting vertebral body mechanism and an upper artificial vertebral body mechanism and a lower artificial vertebral body mechanism; the vertebral body connecting mechanism comprises a bionic connecting vertebral body 1; the top end and the bottom end of the bionic connecting vertebral body 1 are both provided with a honeycomb connecting layer 2; a connecting silica gel layer 3 is poured in the connecting layer 2; the artificial vertebral body mechanism at the upper part comprises a bionic semi-vertebral body 4 fixedly connected with the connecting silica gel layer 3 at the top end; the middle part of the top end of the bionic hemicentrum 4 is provided with a thread groove 5; a fixing screw 6 is connected with the inner thread of the thread groove 5; vertical anti-skid grains 7 are uniformly arranged on the outer side surface of the fixing screw 6 along the circumferential direction; an operation window 8 is arranged at the upper part of the right end of the bionic semi-cone; the operation window 8 is communicated with the thread groove 5; the top end of the bionic semi-cone 4 is provided with a honeycomb pouring layer 9; a contact silica gel layer 10 is poured in the pouring layer 9; a connecting hole 11 is formed in the middle of the top end of the contact silica gel layer 10; the connecting hole 11 is communicated with the thread groove 5; the artificial vertebral body mechanism at the lower part has the same structure as the artificial vertebral body mechanism at the upper part and is symmetrical up and down; the inside of the bionic connecting vertebral body 1 and the inside of the bionic semi-vertebral body 4 are both in a honeycomb structure; bone powder is filled in the bionic connecting vertebral body 1 and the bionic semi-vertebral body 4; the inside of the fixing screw 6 is of a cavity structure; the top end of the fixing screw 6 is provided with an adapting hole 12.
The artificial vertebral body is finished on the basis of the 3D printing technology;
when the artificial vertebral body is implanted into the damaged vertebral body of the patient to replace the damaged vertebral body, the artificial vertebral body is firstly compressed when being implanted, so that the volume of the artificial vertebral body is reduced, the artificial vertebral body is implanted into the damaged vertebral body, when the artificial vertebral body is extruded, the bionic semi-vertebral body 4 extrudes the connecting silica gel layer 3 on the bionic connecting vertebral body 1, and the elastic characteristic of the connecting silica gel layer 3 ensures that the bionic semi-vertebral body 4 has certain space extrusion amount, so that the volume of the artificial vertebral body is reduced, and the artificial vertebral body is convenient to place at the damaged vertebral body;
after the artificial vertebral body is implanted into the damaged vertebral body, the extrusion force on the bionic semi-vertebral body 4 is removed, so that the bionic semi-vertebral body 4 is restored to the original volume by the elasticity of the connecting silica gel layer 3, so that the contact silica gel layer 10 is respectively contacted with the adjacent vertebral bodies, then a wrench and other tools rotate the fixing screw 6 through the operation window 8, the anti-skid thread 7 on the outer surface of the fixing screw 6 ensures that the fixing screw 6 rotates more smoothly, the fixing screw 6 gradually rotates out of the thread groove 5 and is contacted with the adjacent vertebral bodies when rotating, the thread is screwed into the vertebral body, the cavity structure inside the fixing screw 6 and the adaptation port 12 on the fixing screw 6 ensure that the bone in the vertebral body enters the fixing screw 6, the bone grows in the fixing screw 6 to ensure that the fixing screw 6 is fixed more firmly, after the thread of the fixing screw 6 is screwed into the proper position in the vertebral body, the artificial vertebral body is fixed in position, and the bionic semi-vertebral body 4 and the bionic connecting vertebral body 1 are fixed through the connecting silica gel layer 3, so that the artificial vertebral body has reasonable physiological curvature, the artificial vertebral body has certain activity, the artificial vertebral body is prevented from being too stiff, and a patient can use the artificial vertebral body more comfortably;
after the fixing screws 6 are respectively fixed in the vertebral bodies, the positions of the fixing screws 6 can be determined through imaging technologies such as X-ray and the like, then the adjacent vertebral bodies are punched, and then the fixing screws 6 are fixed in position through embedding wedges and the like, so that the fixing of the fixing screws 6 is firmer;
after the bionic half vertebral bodies 4 are fixed through the fixing screws 6, the silica gel layer is respectively contacted with the adjacent vertebral bodies, the silica gel material of the silica gel layer does not generate rejection reaction with a human body, the use is safer, and the silica gel layer has certain elasticity, so that the silica gel layer is used as a bionic intervertebral disc for filling a gap between the adjacent vertebral bodies and the artificial vertebral bodies, the abrasion between the bionic half vertebral bodies 4 and the vertebral bodies is reduced, the vertebral bodies are protected, and a certain amount of activity is provided between the vertebral bodies and the artificial vertebral bodies, so that the physiological curvature between the artificial vertebral bodies is maintained, the vibration of a spine is absorbed, and the use is more comfortable;
after the artificial vertebral body is implanted into a patient body for fixation, bone powder filled in a honeycomb porous structure in the bionic semi-vertebral body 4 is induced to grow by environmental factors, and grown bone is filled in the bionic semi-vertebral body 4, so that the bionic semi-vertebral body 4 is firmer.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336239.0A CN109223258B (en) | 2018-11-09 | 2018-11-09 | A 3D printed artificial vertebral body system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336239.0A CN109223258B (en) | 2018-11-09 | 2018-11-09 | A 3D printed artificial vertebral body system |
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| Publication Number | Publication Date |
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| CN109223258A CN109223258A (en) | 2019-01-18 |
| CN109223258B true CN109223258B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336239.0A Active CN109223258B (en) | 2018-11-09 | 2018-11-09 | A 3D printed artificial vertebral body system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110464514B (en) * | 2019-07-16 | 2020-09-04 | 太原理工大学 | Application of honeycomb sandwich structure in vertebral body implant and preparation method of implant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6991653B2 (en) * | 2002-03-21 | 2006-01-31 | Sdgi Holdings, Inc. | Vertebral body and disc space replacement devices |
| US7704279B2 (en) * | 2005-04-12 | 2010-04-27 | Moskowitz Mosheh T | Bi-directional fixating transvertebral body screws, zero-profile horizontal intervertebral miniplates, expansile intervertebral body fusion devices, and posterior motion-calibrating interarticulating joint stapling device for spinal fusion |
| EP2477578B1 (en) * | 2009-09-23 | 2015-08-19 | Zimmer Spine, Inc. | Composite implant |
| US9693874B2 (en) * | 2013-03-15 | 2017-07-04 | Blackstone Medical, Inc. | Composite spinal interbody device and method |
| CN104000674B (en) * | 2014-06-10 | 2016-03-09 | 张衣北 | Tool pliability trabecular bone structure Invasive lumbar fusion device |
| CN108514466B (en) * | 2018-06-12 | 2020-06-12 | 深圳市立心科学有限公司 | Intervertebral fusion device with buffer part |
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| CN109223258A (en) | 2019-01-18 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Deng Zhiqin Inventor after: Tang Jiefu Inventor after: Liu Jianshe Inventor after: Shi Meilian Inventor after: Zeng Jie Inventor after: Zhou Shaocheng Inventor before: Tang Jiefu Inventor before: Liu Jianshe Inventor before: Shi Meilian Inventor before: Zeng Jie Inventor before: Zhou Shaocheng |
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Effective date of registration: 20210712 Address after: Shenzhen Second People's Hospital, 3002 Sungang West Road, Futian District, Shenzhen, Guangdong 518000 Applicant after: Shenzhen Second People's Hospital (Shenzhen Institute of translational medicine) Address before: Huaihua Second People's Hospital, No.104, building 11, second municipal hospital, Hecheng District, Huaihua City, Hunan Province, 418000 Applicant before: Tang Jiefu |
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