CN202619917U - Biological fixation type artificial atlanto-odontoid joint - Google Patents
Biological fixation type artificial atlanto-odontoid joint Download PDFInfo
- Publication number
- CN202619917U CN202619917U CN2012202663744U CN201220266374U CN202619917U CN 202619917 U CN202619917 U CN 202619917U CN 2012202663744 U CN2012202663744 U CN 2012202663744U CN 201220266374 U CN201220266374 U CN 201220266374U CN 202619917 U CN202619917 U CN 202619917U
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- CN
- China
- Prior art keywords
- atlas
- dentata
- moving part
- odontoid
- atlanto
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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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
The utility model discloses a biological fixation type artificial atlanto-odontoid joint, which comprises an atlanto-odontoid part and an atlantoaxial part hinged with the atlanto-odontoid part, wherein a bioactive coating is sprayed to the atlanto-odontoid part and the atlantoaxial part respectively. According to the artificial atlanto-odontoid joint, the atlanto-odontoid part and the atlantoaxial part which are respectively fixed on atlas and axis are connected through a hinge, so that the atlanto-odontoid part can rotate relatively the atlantoaxial part, while the bioactive coatings sprayed on the atlanto-odontoid part and the atlantoaxial part favor biological fixation with atlas and axis after the atlanto-odontoid part and the atlantoaxial part are fixed, so that an artifical atlanto-odontoid joint with firmer connection can be obtained. The biological fixation type artificial atlanto-odontoid joint is used in the field of medical devices.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly relates to a kind of artificial atlanto-odontoid joint.
Background technology
Cervical spinal injury usually can cause the fracture of fracture of odontoid process of vertebra dentata or transverse ligament of atlas, thereby causes atlantoaxial dislocation.Behind the atlantoaxial dislocation, the spinal canal stenosis of respective planes cervical vertebra, the compressing spinal cord will cause that numb limbs and tense tendons is unable even cause clinical symptoms such as paralysis.So atlantoaxial dislocation is a kind of disease of serious harm patient health.Generally speaking see that the extensive region dentata that the prominent fracture of fresh tooth causes takes off and can treat to regain the stable of atlanto-odontoid joint after the union of fracture through implementing the prominent screw fixing operation of tooth.And the atlantoaxial dislocation that the transverse ligament of atlas fracture causes can't be repaired the transverse ligament of fracture through operation, can only implement extensive region dentata fusion and rebuild Atlantoaxial stable.
Extensive region dentata integration technology commonly used at present has a variety of, mainly comprises the technology on preceding road and the technology of the way of escape.The former is technological just like the fast joint of dentata side, extensive region screw, the dentata reset plate technique for fixing through the oropharynx extensive region.The latter is technological just like extensive region dentata way of escape fixation with steel wire, extensive region dentata way of escape pedicle screw and follow closely excellent technique for fixing etc.Though extensive region dentata fusion can solve Atlantoaxial mechanical stability and remove the spinal compression problem, is cost to sacrifice normal extensive region dentata motor function.
Biomechanics Research finds that articulatio atlantoepistrophica has been participated in 50% cervical vertebra spinfunction, if fixing and fusing the extensive region dentata, will lose more than 50% the cervical vertebra spinfunction and about 20% bend and stretch function.So extensive region dentata fusion is a kind of helpless selection.If can invent a kind of artificial atlanto-odontoid joint, can keep Atlantoaxial motor function, can keep its normal physiological stability again, will be a much progress of modern medicine.
Consult document, can find some about extensive region tooth artificial joint design report and patent case.Though these artificial atlanto-odontoid joints have tentatively possessed the basic structure of atlanto-odontoid joint, and possess the function that rotatablely moves accordingly, design all simpler; Generally all adopt lateral mass of atlas screw and dentata vertebral body screw to fix, its constant intensity is low, is difficult to resist fatigue that dentata joint, extensive region long-term motion causes with loosening; Secondly; The fixed design of this class formation inanimate object, prosthese and bone be combining of developmental biology not, and long term is loosening easily.
The utility model content
For addressing the above problem, this utility model provides a kind of can realize more firm fixed artificial atlanto-odontoid joint with articulatio atlantoepistrophica.
This utility model solves the technical scheme that its technical problem adopted:
The artificial atlanto-odontoid joint of a kind of biological fixation type comprises that the atlas moving part reaches the dentata moving part that is articulated and connected with the atlas moving part, all is coated with bioactivity coatings on atlas moving part and the dentata moving part.
Further as the improvement of this utility model technical scheme, the center of atlas moving part is provided with the joint sheath, and the dentata moving part is provided with the joint shaft that is plugged in the sheath of joint.
Further as the improvement of this utility model technical scheme, the both sides of atlas moving part are equipped with the atlas flank, and the both sides of dentata moving part are equipped with the dentata flank.
Further as the improvement of this utility model technical scheme, the atlas flank is provided with the atlas fixing hole, and the dentata flank is provided with the dentata fixing hole.
Further as the improvement of this utility model technical scheme, the inboard of atlas fixing hole and dentata fixing hole is equipped with female thread.
Further as the improvement of this utility model technical scheme, embed in atlas fixing hole and the dentata fixing hole and be provided with lock screw, the surfaces coated of lock screw is provided with bioactivity coatings.
Further as the improvement of this utility model technical scheme, bioactivity coatings is a hydroxyapatite bioactive coating.
Further as the improvement of this utility model technical scheme, atlas moving part and dentata moving part are the titanium alloy member.
The beneficial effect of this utility model: this artificial atlanto-odontoid joint is with being fixedly mounted on atlas and the dentata atlas moving part and dentata moving part respectively through being hinged and connected; Make the atlas moving part to rotate relative to the dentata moving part; Simultaneously the bioactivity coatings that is coated with on atlas moving part and the dentata moving part can be convenient to atlas moving part and dentata moving part fixed installation accomplish the back with atlas and dentata realization biological fixation, thereby obtain the artificial atlanto-odontoid joint of more firm connection.
Description of drawings
Below in conjunction with accompanying drawing this utility model is described further:
Fig. 1 is that this utility model embodiment implements structural representation;
Fig. 2 is an atlas moving part structural representation among this utility model embodiment;
Fig. 3 is a dentata moving part structural representation among this utility model embodiment.
The specific embodiment
With reference to Fig. 1～Fig. 3, this utility model is the artificial atlanto-odontoid joint of a kind of biological fixation type, comprises atlas moving part 1 and the dentata moving part 2 that is articulated and connected with said atlas moving part 1, all is coated with bioactivity coatings on atlas moving part 1 and the dentata moving part 2.
This artificial atlanto-odontoid joint is with being fixedly mounted on respectively on atlas and the dentata; Atlas moving part 1 and dentata moving part 2 are through being hinged and connected; Make atlas moving part 1 to rotate relative to dentata moving part 2; The bioactivity coatings that on atlas moving part 1 and dentata moving part 2, is coated with simultaneously can be convenient to atlas moving part 1 and accomplish the back and realize biological fixation with atlas and dentata in fixed installation with dentata moving part 2, thereby obtains the artificial atlanto-odontoid joint of more firm connection.
As this utility model preferred embodiment, the center of atlas moving part 1 is provided with joint sheath 11, and dentata moving part 2 is provided with the joint shaft 21 that is plugged in the joint sheath 11.
As this utility model preferred embodiment, the both sides of atlas moving part 1 are equipped with atlas flank 12, and the both sides of dentata moving part 2 are equipped with dentata flank 22.
As this utility model preferred embodiment, atlas flank 12 is provided with atlas fixing hole 13, and dentata flank 22 is provided with dentata fixing hole 23.As this utility model preferred embodiment, the inboard of atlas fixing hole 13 and dentata fixing hole 23 is equipped with female thread.
In the atlas fixing hole 13 locking screw thread is arranged, upward 0～5 degree of its side, abduction 10～15 degree point to atlas pedicle of vertebral arch direction, in the dentata fixing hole 23 locking screw thread are arranged, its direction abduction 10～15 degree, declivity 5～15 degree point to dentata pedicle of vertebral arch direction.
As this utility model preferred embodiment, embed in atlas fixing hole 13 and the dentata fixing hole 23 and be provided with lock screw 3, the surfaces coated of lock screw 3 is provided with bioactivity coatings.
As this utility model preferred embodiment, bioactivity coatings is a hydroxyapatite bioactive coating.
As this utility model preferred embodiment, atlas moving part 1 is the titanium alloy member with dentata moving part 2.
The dentata moving part 2 that is fixedly mounted on the dentata in this artificial atlanto-odontoid joint is provided with joint shaft 21; Joint shaft 21 is plugged in the joint sheath 11 that is fixedly installed on the Supraatlantal atlas moving part 1; Joint shaft 21 can pivot in joint sheath 11, thereby makes atlanto-odontoid joint can realize rotation by a larger margin.
In the installation process of atlas moving part 1 or dentata moving part 2; Be screwed into lock screw 3 in the atlas fixing hole 13 on atlas flank 12 or in the dentata fixing hole 23 on the dentata flank 22; Also be coated with hydroxyapatite bioactive coating on the outer surface of this lock screw 3; Combine at the osteogenic interface of shape in the future with the spongy bone of lateral mass of atlas with assurance locking lock screw 3, thereby improve its secular stability.
Hydroxyapatite bioactive coating is sprayed at each position of atlas moving part 1, dentata moving part 2 and lock screw through the airless spraying technology, merges at the osteogenic interface of shape in the future to guarantee each parts and spongy bone, improves its long-time stability.
Certainly; The invention is not limited to above-mentioned embodiment; Those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of this utility model spirit, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (8)
1. the artificial atlanto-odontoid joint of biological fixation type is characterized in that: comprise that atlas moving part (1) reaches the dentata moving part (2) that is articulated and connected with said atlas moving part (1), all is coated with bioactivity coatings on said atlas moving part (1) and the dentata moving part (2).
2. the artificial atlanto-odontoid joint of biological fixation type according to claim 1, it is characterized in that: the center of said atlas moving part (1) is provided with joint sheath (11), and said dentata moving part (2) is provided with the joint shaft (21) that is plugged in the joint sheath (11).
3. the artificial atlanto-odontoid joint of biological fixation type according to claim 1 and 2, it is characterized in that: the both sides of said atlas moving part (1) are equipped with atlas flank (12), and the both sides of said dentata moving part (2) are equipped with dentata flank (22).
4. the artificial atlanto-odontoid joint of biological fixation type according to claim 3, it is characterized in that: said atlas flank (12) is provided with atlas fixing hole (13), and said dentata flank (22) is provided with dentata fixing hole (23).
5. the artificial atlanto-odontoid joint of biological fixation type according to claim 4, it is characterized in that: the inboard of said atlas fixing hole (13) and dentata fixing hole (23) is equipped with female thread.
6. the artificial atlanto-odontoid joint of biological fixation type according to claim 5, it is characterized in that: embed in said atlas fixing hole (13) and the dentata fixing hole (23) and be provided with lock screw (3), the surfaces coated of said lock screw (3) is provided with bioactivity coatings.
7. the artificial atlanto-odontoid joint of biological fixation type according to claim 1 and 2, it is characterized in that: said bioactivity coatings is a hydroxyapatite bioactive coating.
8. the artificial atlanto-odontoid joint of biological fixation type according to claim 1 and 2, it is characterized in that: said atlas moving part (1) and dentata moving part (2) are the titanium alloy member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202663744U CN202619917U (en) | 2012-06-06 | 2012-06-06 | Biological fixation type artificial atlanto-odontoid joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202663744U CN202619917U (en) | 2012-06-06 | 2012-06-06 | Biological fixation type artificial atlanto-odontoid joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202619917U true CN202619917U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202663744U Expired - Fee Related CN202619917U (en) | 2012-06-06 | 2012-06-06 | Biological fixation type artificial atlanto-odontoid joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202619917U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112263314A (en) * | 2020-09-28 | 2021-01-26 | 西安增材制造国家研究院有限公司 | Resetting and fixing device for atlantoaxial dislocation |
| CN115006065A (en) * | 2022-07-11 | 2022-09-06 | 四川大学华西医院 | Artificial occipital atlantoaxial joint prosthesis |
-
2012
- 2012-06-06 CN CN2012202663744U patent/CN202619917U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112263314A (en) * | 2020-09-28 | 2021-01-26 | 西安增材制造国家研究院有限公司 | Resetting and fixing device for atlantoaxial dislocation |
| CN115006065A (en) * | 2022-07-11 | 2022-09-06 | 四川大学华西医院 | Artificial occipital atlantoaxial joint prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20180606 |