CN112842635B - Slidable and self-locking atlantoaxial interbody fusion cage - Google Patents
Slidable and self-locking atlantoaxial interbody fusion cage Download PDFInfo
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- CN112842635B CN112842635B CN201911186034.3A CN201911186034A CN112842635B CN 112842635 B CN112842635 B CN 112842635B CN 201911186034 A CN201911186034 A CN 201911186034A CN 112842635 B CN112842635 B CN 112842635B
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- upper sliding
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- 230000004927 fusion Effects 0.000 title claims abstract description 26
- 230000008093 supporting effect Effects 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 238000002513 implantation Methods 0.000 claims description 10
- 210000000988 bone and bone Anatomy 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 5
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 210000004872 soft tissue Anatomy 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 210000002632 atlanto-axial joint Anatomy 0.000 description 4
- 210000003692 ilium Anatomy 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 210000003041 ligament Anatomy 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 206010041549 Spinal cord compression Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000642 iatrogenic effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 230000002188 osteogenic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- 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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (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 invention provides a slidable and self-locking atlantoaxial interbody fusion cage, which comprises an upper sliding sheet part, a lower sliding sheet part and a wedge-shaped supporting block for supporting the upper sliding sheet part and the lower sliding sheet part; the upper sliding vane part and the lower sliding vane part are connected in a sliding manner; the wedge-shaped supporting block is arranged between the upper sliding vane part and the lower sliding vane part. The atlantoaxial interbody fusion cage overcomes the defects of the traditional atlantoaxial interbody fusion cage, fully considers the operation approach and clinical operation, consists of two parts of prostheses which can slide relatively, and is provided with a wedge-shaped supporting block, so that the atlantoaxial interbody fusion cage is convenient for supporting the atlantoaxial, can be locked at the same time, and ensures the stability of the atlantoaxial.
Description
Technical Field
The invention belongs to the technical field of medical prosthesis manufacturing, and particularly relates to a slidable and self-locking atlantoaxial interbody fusion cage.
Background
The atlantoaxial is located in the craniocervical transition part, the part is deep, the anatomy is complex, the function is important, the structural stability is mainly dependent on the integrity of the bone structure and the continuity of ligament structures such as transverse ligaments, pterygoid ligaments and the like located behind the dentate process, the surgical treatment of the atlantoaxial dislocation is complex and troublesome, and the atlantoaxial dislocation is one of the difficulties of spinal surgery all the time. Atlantoaxial dislocation or instability is common in clinic, and has many causes including trauma, inflammation, congenital malformation, degeneration, tumor, iatrogenic factors and the like, and needs to be timely operated to relieve spinal cord compression or potential nerve injury risk so as not to endanger life. The posterior internal fixation technology has the advantages of clear surgical exposure field, wide indication, stable biomechanical property, high fusion rate, lower incidence rate of surgical complications and the like, and is a main method for treating atlantoaxial dislocation at present.
The atlantoaxial pedicle screw fixing system has wider clinical application, excellent biomechanical property and less bleeding in operation, can avoid the stimulation to C2 nerve root, and is one of the most common operation modes for posterior cervical fixation. This procedure often requires the ilium to be implanted into the atlantoaxial intervertebral joint to promote bony fusion of the atlantoaxial intervertebral joint, thus ensuring long-term stability of the surgical site. Although the implantation of ilium particles does not affect subsequent atlantoaxial reduction with peg compression, there are also some drawbacks: (1) Patients often need to take autologous ilium, so that surgical incision is increased, and the wound is large; (2) The ilium granules can only play a role in promoting local osseous fusion after implantation, and the supporting effect is difficult to achieve. In order to solve the defects, a plurality of scholars are devoted to the development of the atlantoaxial interbody fusion cage, but all prostheses have the defects that the atlantoaxial further reduction operation is affected after implantation at present, so the atlantoaxial interbody fusion cage is not clinically popularized. In conclusion, developing a novel atlantoaxial interbody fusion cage which does not influence the atlantoaxial resetting operation after implantation and can reconstruct the stability of the atlantoaxial has very important clinical significance.
Disclosure of Invention
The invention provides a slidable and self-locking atlantoaxial interbody fusion cage, which overcomes the defects of the traditional atlantoaxial interbody fusion cage, fully considers the operation approach and clinical operation, consists of two parts of prostheses which can slide relatively, and is provided with a wedge-shaped supporting block, so that the fusion cage is convenient for supporting the atlantoaxial, can lock at the same time, and ensures the stability of the atlantoaxial.
The invention realizes the above purpose by adopting the following technical scheme:
a slidable and self-locking atlantoaxial interbody fusion cage comprises an upper sliding sheet part, a lower sliding sheet part and a wedge-shaped supporting block for supporting the upper sliding sheet part and the lower sliding sheet part; the upper sliding vane part and the lower sliding vane part are connected in a sliding manner; the wedge-shaped supporting block is arranged between the upper sliding vane part and the lower sliding vane part.
The upper sliding vane part and the lower sliding vane part both comprise sliding blocks, and encircling arms are arranged on two sides of the sliding blocks corresponding to the lower sliding vane part; the encircling arm encircles the upper sliding vane part, so that the upper sliding vane part slides in the encircling arm.
The encircling arm comprises two U-shaped sliding grooves arranged on two sides of the head end of the sliding block of the lower sliding block part; the inner wall of the encircling arm is provided with a sawtooth structure which is arranged opposite to the sliding block corresponding to the lower sliding piece part; protruding outer edges are respectively arranged on two sides of the upper sliding sheet part, the outer edges correspond to the encircling arms, and a sawtooth structure is arranged on the outer edges; the saw tooth structure on the outer edge corresponds to the saw tooth structure on the encircling arm.
The tail part of the sliding block corresponding to the upper sliding sheet part is also provided with a sliding limiting block for carrying out fiber on the encircling arm.
The sliding block assembly is characterized in that a groove for accommodating a wedge-shaped supporting block is formed in the middle of the contact surface of the sliding block corresponding to the upper sliding block part and the lower sliding block part, and the wedge-shaped supporting block is inserted into the groove to support the sliding block corresponding to the upper sliding block part and the lower sliding block part.
The tail end of the wedge-shaped supporting block is slightly smaller than the sum of the depths of the grooves of the upper sliding vane part and the lower sliding vane part, and the head end of the wedge-shaped supporting block is greater than the sum of the depths of the two grooves, so that the upper sliding vane part and the lower sliding vane part are extruded and separated after the wedge-shaped supporting block is implanted, and the encircling arm is locked with the outer edge, so that the upper sliding vane part and the lower sliding vane part are prevented from sliding again; the head end of the wedge-shaped supporting block is provided with a cylindrical clamping groove, so that the clamping implantation in the operation is facilitated.
The sliding block comprises an upper sliding vane part and a lower sliding vane part, wherein the tail parts of sliding blocks corresponding to the upper sliding vane part and the lower sliding vane part are respectively provided with an anti-slip groove, and the directions of the anti-slip grooves are perpendicular to the sliding directions of the upper sliding vane part and the lower sliding vane part.
The top of the sliding block corresponding to the upper sliding sheet component and the bottom of the sliding block corresponding to the lower sliding sheet component are respectively provided with an arched dome and a tooth process, and the arched dome is attached to a concave on the articular surface of the atlantoaxial intervertebral joint; the tooth processes are arranged on two sides of the contact surface of the sliding block and the joint surface, and the tips of the tooth processes face to the outer side.
The upper sliding vane part, the lower sliding vane part and the wedge-shaped supporting block are integrally formed; the upper sliding vane part and the lower sliding vane part are made of medical titanium alloy, and the wedge-shaped supporting block is made of polyether-ether-ketone or polyethylene.
The surfaces of the upper sliding vane part and the lower sliding vane part, which are contacted with surrounding bones, are respectively provided with a hydroxyapatite coating or a micropore structure, and the parts, which are close to soft tissues such as blood vessels, are respectively subjected to smooth treatment.
The technical scheme adopted by the invention has the following beneficial effects:
the slidable self-locking atlantoaxial intervertebral joint fusion device overcomes the defects of the traditional atlantoaxial intervertebral fusion device, fully considers the operation approach and the clinical operation, and provides the slidable self-locking atlantoaxial intervertebral joint fusion device. The prosthesis fully considers the operation flow and the local anatomical characteristics of the atlantoaxial. The joint contact surface between the prosthesis and the atlantoaxial intervertebral joint is provided with an arched dome so as to be anatomically attached with the arched dome; the odontoid process and the anti-slip groove can enable the upper sliding sheet component and the lower sliding sheet component to be tightly fixed with the atlantoaxial joint surface, thereby preventing the displacement of the prosthesis and avoiding the compression of spinal cord or blood vessels.
The upper sliding vane part and the lower sliding vane part can mutually slide, the atlantoaxial resetting operation is not influenced after implantation, the wedge-shaped supporting block can be locked after implantation, the sliding vane parts are prevented from sliding again, and the stability of an operation part is ensured.
The surface of the prosthesis, which is contacted with the bone, is provided with a hydroxyapatite coating or a micropore structure, so that the bone fusion is facilitated.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a front end schematic of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 is a bottom view of the present invention.
Fig. 6 is a cross-sectional view of the present invention.
Fig. 7 is a schematic view of an upper slider member.
Fig. 8 is a schematic view of a lower slider member.
Fig. 9 is a schematic view of a wedge-shaped support block.
FIG. 10 is a three-dimensional model of an atlantoaxial intervertebral joint with a novel prosthetic implant.
In the figure, 1 is an upper sliding vane part, 2 is a lower sliding vane part, 3 is a wedge-shaped supporting block, 4 is a sliding block, 5 is an outer edge, 6 is a sliding limiting block, 7 is an encircling arm, 8 is an arch-shaped protrusion, 9 is a tooth protrusion, 10 is an anti-skid groove, 11 is a groove, 12 is a saw-tooth structure, 13 is a tail end, 14 is a head end, 15 is a cylindrical clamping groove, H is the height of the wedge-shaped supporting block, and D is the depth of the groove of the upper sliding vane part and the lower sliding vane part.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1 to 8, the sliding and self-locking atlantoaxial intervertebral joint fusion device of the present invention comprises an upper sliding sheet part 1, a lower sliding sheet part 2 and a wedge-shaped supporting block 3.
The upper sliding vane part 1 is composed of a sliding block 4, an outer edge 5 and a sliding limiting block 6; the lower slide member 2 is composed of a slider 4 and an encircling arm 7. The contact surface between the sliding block 4 and the atlantoaxial intervertebral joint is provided with an arched dome 8, a tooth process 9 and an anti-slip groove 10, and the middle of the contact surface of the two sliding blocks is provided with a groove 11 for accommodating a wedge-shaped supporting block. The outer edge 5 is provided with a sawtooth structure 12 which is assembled with the sawtooth structure 12 on the encircling arm 7 of the lower sliding vane part 2, and when the wedge-shaped supporting block 3 is implanted into the groove 11, the upper sliding vane part and the lower sliding vane part are extruded and separated, so that the encircling arm 7 is locked with the sawtooth structure 12 on the outer edge 5, and the upper sliding vane part and the lower sliding vane part are prevented from sliding again. The sliding limiting block 6 is positioned at the tail part of the outer edge 5, and when the upper sliding vane and the lower sliding vane slide to a certain distance, the encircling arm 7 can abut against the sliding limiting block 6, so that the upper sliding vane part and the lower sliding vane part are limited to excessively slide and separate.
The encircling arms 7 are positioned on two sides of the head end of the sliding block 4, the encircling arms 7 are of U-shaped structures, can just encircle the outer edge 5 on the upper sliding sheet part 1, are also provided with saw tooth structures 12, and are just assembled with the saw tooth structures 12 on the outer edge 5 of the upper sliding sheet part 1. The arched dome 8, which is attached to a depression on the articular surface of the atlantoaxial intervertebral joint, increases the contact surface of the prosthesis with bony structures, avoiding stress concentrations.
The tooth process 9 is positioned on two sides of the contact surface of the sliding block and the joint surface, the tooth process tip faces to the outer side, and after the prosthesis is implanted, the tooth process 9 can penetrate into the joint surface to avoid the prosthesis from shifting to two sides. The anti-slip groove 10 is positioned at the tail part of the sliding block, and the groove trend of the anti-slip groove can just prevent the upper sliding block part and the lower sliding block part from shifting forward, so that the damage to structures such as a trachea, an esophagus and the like caused by forward shifting after the implantation of the prosthesis is avoided.
Referring to fig. 9, the height H of the tail end 13 of the wedge-shaped supporting block 3 is slightly smaller than the sum of the depths D of the grooves 11 of the upper and lower sliding vane members, and the height H of the head end 14 is greater than the sum of the depths of the two grooves 11, so that the upper and lower sliding vane members are squeezed and separated after the wedge-shaped supporting block is implanted, and the encircling arm is locked with the outer edge, so that the upper and lower sliding vane members are prevented from sliding again. The wedge-shaped support block head end 14 is provided with a cylindrical clamping groove 15, so that the clamping implantation in the operation is facilitated.
The upper sliding vane part, the lower sliding vane part and the wedge-shaped supporting block are integrally formed. The upper sliding vane part and the lower sliding vane part are made of medical titanium alloy, and the wedge-shaped supporting block is made of polyether-ether-ketone or polyethylene. The surfaces of the upper sliding vane part and the lower sliding vane part, which are contacted with surrounding bones, are respectively provided with a hydroxyapatite coating or a micropore structure, and the parts, which are close to soft tissues such as blood vessels, are respectively subjected to smooth treatment.
Referring to fig. 10, the slidable and self-locking atlantoaxial interbody cage of the present invention is assembled as follows: acquiring relevant anatomical parameters of the atlantoaxial intervertebral joint according to the CT scanning and three-dimensional reconstruction of the patient before operation, and selecting a prosthesis with a proper model according to the size of a focus. The upper slide piece and the lower slide piece are assembled and then implanted into the atlantoaxial intervertebral joint. Then the atlantoaxial joint is reset under traction, after the excellent reset is observed under C-arm perspective, the wedge-shaped supporting block is implanted into the groove, and the upper slide plate and the lower slide plate are locked.
In a word, the sliding self-locking atlantoaxial intervertebral joint fusion device comprises an upper sliding sheet part, a lower sliding sheet part and a wedge-shaped supporting block. The upper sliding vane part consists of a sliding block, an outer edge and a sliding limiting block. The contact surface of the sliding block and the lower atlas joint surface is provided with an arched dome, a odontoid process and an anti-slip groove; the outer edge is provided with a sawtooth structure; the sliding limiting block is positioned at the tail part of the outer edge and mainly limits the upper sliding vane part and the lower sliding vane part to excessively slide and separate. The lower sliding vane part consists of a sliding block and an encircling arm. The contact surface of the sliding block and the upper joint surface of the pivot is provided with an arched dome, a tooth process and an anti-slip groove; the encircling arms are positioned at two sides of the head end of the sliding block, and are also provided with saw tooth structures which are just assembled with the saw tooth structures on the outer edge of the upper sliding vane. A groove is arranged between the contact surfaces of the two sliding blocks and mainly accommodates the entrance of the wedge-shaped supporting block. The upper sliding vane part and the lower sliding vane part of the whole prosthesis are integrally formed by adopting titanium alloy materials, a hydroxyapatite coating or a micropore structure is arranged at the contact part of the upper sliding vane part and the lower sliding vane part and the bone surface, and the wedge-shaped supporting block is integrally formed by polyethylene or polyether-ether-ketone materials. The invention is mainly used for dislocation of the atlantoaxial joint, can well realize reduction of the atlantoaxial joint and promote osteogenic fusion of the atlantoaxial intervertebral joint, thereby reconstructing stability of the atlantoaxial.
Claims (5)
1. A slidable and self-locking atlantoaxial interbody fusion cage, characterized in that: the sliding vane comprises an upper sliding vane part, a lower sliding vane part and a wedge-shaped supporting block for supporting the upper sliding vane part and the lower sliding vane part; the upper sliding vane part and the lower sliding vane part are connected in a sliding manner; the wedge-shaped supporting block is arranged between the upper sliding vane part and the lower sliding vane part;
the upper sliding vane part and the lower sliding vane part both comprise sliding blocks, and encircling arms are arranged on two sides of the sliding blocks corresponding to the lower sliding vane part; the encircling arm encircles the upper sliding vane part, so that the upper sliding vane part slides in the encircling arm;
the encircling arm comprises two U-shaped sliding grooves arranged on two sides of the head end of the sliding block of the lower sliding block part; the inner wall of the encircling arm is provided with a sawtooth structure which is arranged opposite to the sliding block corresponding to the lower sliding piece part; protruding outer edges are respectively arranged on two sides of the upper sliding sheet part, the outer edges correspond to the encircling arms, and a sawtooth structure is arranged on the outer edges; the saw tooth structure on the outer edge corresponds to the saw tooth structure on the encircling arm;
the sliding blocks corresponding to the upper sliding vane part and the lower sliding vane part are supported by inserting the wedge-shaped supporting blocks into the grooves;
the tail end of the wedge-shaped supporting block is slightly smaller than the sum of the depths of the grooves of the upper sliding vane part and the lower sliding vane part, and the head end of the wedge-shaped supporting block is greater than the sum of the depths of the two grooves, so that the upper sliding vane part and the lower sliding vane part are extruded and separated after the wedge-shaped supporting block is implanted, and the encircling arm is locked with the outer edge, so that the upper sliding vane part and the lower sliding vane part are prevented from sliding again; the head end of the wedge-shaped supporting block is provided with a cylindrical clamping groove, so that the clamping implantation in the operation is facilitated;
the surfaces of the upper sliding vane part and the lower sliding vane part, which are in contact with surrounding bones, are respectively provided with a hydroxyapatite coating or a micropore structure, and the parts close to soft tissues are respectively subjected to smoothing treatment.
2. The slidable and self-locking atlantoaxial interbody cage according to claim 1, wherein: the tail part of the sliding block corresponding to the upper sliding sheet part is also provided with a sliding limiting block for carrying out fiber on the encircling arm.
3. The slidable and self-locking atlantoaxial interbody cage according to claim 1, wherein: the sliding block comprises an upper sliding vane part and a lower sliding vane part, wherein the tail parts of sliding blocks corresponding to the upper sliding vane part and the lower sliding vane part are respectively provided with an anti-slip groove, and the directions of the anti-slip grooves are perpendicular to the sliding directions of the upper sliding vane part and the lower sliding vane part.
4. A slidable and self-locking atlantoaxial interbody fusion cage according to claim 3, characterized in that: the top of the sliding block corresponding to the upper sliding sheet component and the bottom of the sliding block corresponding to the lower sliding sheet component are respectively provided with an arched dome and a tooth process, and the arched dome is attached to a concave on the articular surface of the atlantoaxial intervertebral joint; the tooth processes are arranged on two sides of the contact surface of the sliding block and the joint surface, and the tips of the tooth processes face to the outer side.
5. The slidable and self-locking atlantoaxial interbody cage according to claim 4, wherein: the upper sliding vane part, the lower sliding vane part and the wedge-shaped supporting block are integrally formed; the upper sliding vane part and the lower sliding vane part are made of medical titanium alloy, and the wedge-shaped supporting block is made of polyether-ether-ketone or polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186034.3A CN112842635B (en) | 2019-11-28 | 2019-11-28 | Slidable and self-locking atlantoaxial interbody fusion cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186034.3A CN112842635B (en) | 2019-11-28 | 2019-11-28 | Slidable and self-locking atlantoaxial interbody fusion cage |
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| CN112842635A CN112842635A (en) | 2021-05-28 |
| CN112842635B true CN112842635B (en) | 2023-10-20 |
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| CN201911186034.3A Active CN112842635B (en) | 2019-11-28 | 2019-11-28 | Slidable and self-locking atlantoaxial interbody fusion cage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113907857A (en) * | 2021-10-14 | 2022-01-11 | 北京爱康宜诚医疗器材有限公司 | A self-adjusting atlantoaxial repair device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909549A (en) * | 2007-10-25 | 2010-12-08 | 奈尔·杜加尔 | Systems and methods for vertebral disc replacement |
| CN101972179A (en) * | 2010-10-26 | 2011-02-16 | 申勇 | Adjustable cervical interbody fusion cage |
| CN105287059A (en) * | 2014-07-30 | 2016-02-03 | 上海祥尧医疗器械有限公司 | Interbody fusion cage and implantation device thereof |
| CN109640889A (en) * | 2016-06-28 | 2019-04-16 | Eit 新兴移植技术股份有限公司 | Distensible angle adjustable formula joint motions intervertebral retainer |
| CN212395147U (en) * | 2019-11-28 | 2021-01-26 | 刘俭涛 | Slidable and self-locking atlantoaxial intervertebral fusion cage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8226724B2 (en) * | 2009-06-18 | 2012-07-24 | Doty Keith L | Intervertebral spinal disc prosthesis |
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2019
- 2019-11-28 CN CN201911186034.3A patent/CN112842635B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909549A (en) * | 2007-10-25 | 2010-12-08 | 奈尔·杜加尔 | Systems and methods for vertebral disc replacement |
| CN101972179A (en) * | 2010-10-26 | 2011-02-16 | 申勇 | Adjustable cervical interbody fusion cage |
| CN105287059A (en) * | 2014-07-30 | 2016-02-03 | 上海祥尧医疗器械有限公司 | Interbody fusion cage and implantation device thereof |
| CN109640889A (en) * | 2016-06-28 | 2019-04-16 | Eit 新兴移植技术股份有限公司 | Distensible angle adjustable formula joint motions intervertebral retainer |
| CN212395147U (en) * | 2019-11-28 | 2021-01-26 | 刘俭涛 | Slidable and self-locking atlantoaxial intervertebral fusion cage |
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| CN112842635A (en) | 2021-05-28 |
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