CN111588521A - Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage - Google Patents
Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage Download PDFInfo
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- CN111588521A CN111588521A CN202010478476.1A CN202010478476A CN111588521A CN 111588521 A CN111588521 A CN 111588521A CN 202010478476 A CN202010478476 A CN 202010478476A CN 111588521 A CN111588521 A CN 111588521A
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- 230000004927 fusion Effects 0.000 title claims abstract description 61
- 238000013459 approach Methods 0.000 title claims abstract description 32
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 118
- 230000001054 cortical effect Effects 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000392 somatic effect Effects 0.000 claims description 11
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 208000037873 arthrodesis Diseases 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002513 implantation Methods 0.000 description 7
- 230000010354 integration Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 210000003238 esophagus Anatomy 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 208000019505 Deglutition disease Diseases 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000004446 longitudinal ligament Anatomy 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 101000720704 Homo sapiens Neuronal migration protein doublecortin Proteins 0.000 description 1
- 102100025929 Neuronal migration protein doublecortin Human genes 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
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- 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)
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- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention relates to a cervical vertebra side front approach double-cortical fixation hook vertebral joint fusion cage, belonging to the technical field of medical instruments, comprising a fusion cage body part for supporting intervertebral space, wherein the fusion cage body part is a strip block structure, two ends of the fusion cage body part are respectively provided with bone grafting cavities for filling bone grafting materials, the two bone grafting cavities respectively correspond to the left part of the intervertebral space and the right part of the intervertebral space, and one of the bone grafting cavity walls is provided with a fixing structure for sequentially penetrating and fixing cortical bone, cancellous bone and lateral cortical bone of vertebral end plate. Through the structure, the fusion cage provided by the invention can be suitable for being implanted into an intervertebral space from the front side of the cervical vertebra to the approach, can be fixed through the fixing structure in the front side of the cervical vertebra and is fixed on cortical bone, cancellous bone and lateral cortical bone of vertebral end plates, so that the fusion cage can be stably connected in the intervertebral space to be more beneficial to the growth of bone grafting materials.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a lateral and anterior approach double-cortical fixation uncinate vertebral joint fusion cage for cervical vertebra.
Background
Anterior cervical decompression fusion has been the classic and effective surgical method for treating degenerative diseases of cervical vertebrae, during which the trachea and esophagus are pulled and the fibrous ring and the anterior longitudinal ligament at the corresponding part are cut off, so that the surgery will destroy the segment stability of the vertebrae and present the risk of complications such as dysphagia after operation. In order to solve the technical problem, researchers propose a scheme of implanting the fusion cage from the lateral front of the cervical vertebra, when the lateral front approach fusion is carried out, a lateral front micro opening of an intervertebral space is formed, so that the trachea and the esophagus do not need to be pulled, the original fiber ring and the anterior longitudinal ligament in front of a patient can be reserved, and the instability of the operation and the probability of dysphagia of the patient caused by the operation are greatly reduced.
The cervical vertebra side front operation approach has smaller operation visual field, smaller operation channel and smaller space for fixing and implanting operation, and the bone surface for fixing in the side front is also different from the approach in the front. However, the fusion cage in the prior art is designed for anterior cervical decompression fusion, and the size and the fixing manner of the fusion cage are not suitable for the anterior cervical operation, so that a fusion cage which is suitable for the anterior cervical operation and can be stably installed in the intervertebral space is in urgent need.
Disclosure of Invention
The invention provides a double-cortical fixation uncinate vertebral joint fusion cage for lateral and anterior approach of cervical vertebra, which is used for solving the technical problems that the existing fusion cage is not suitable for lateral and anterior approach of cervical vertebra operation and the existing fusion cage is unstable in intervertebral space fixation.
The invention is realized by the following technical scheme: a double-cortical fixation uncinate vertebral joint fusion cage with a lateral and anterior approach for cervical vertebra comprises a fusion cage body part for supporting intervertebral space, wherein the fusion cage body part is a long-strip block-shaped structure, and bone grafting cavities for filling bone grafting materials are arranged at two ends or one end of the fusion cage body part;
when bone grafting cavities are arranged at two ends of the fusion cage body part, the two bone grafting cavities respectively correspond to the left part of the intervertebral space and the right part of the intervertebral space;
the fusion cage body is provided with a fixing structure which is used for sequentially penetrating and fixing cortical bone, cancellous bone and lateral cortical bone of the vertebral end plate.
Further, in order to better implement the present invention, both ends of the fusion cage body are provided with bone grafting cavities and the fixing structure is provided on one of the bone grafting cavities, the fixing structure includes a first hole, a first fastening member, a second hole and a second fastening member, the first hole is opened on the upper part of the bone grafting cavity and faces the front upper part and inclines towards one side of the other bone grafting cavity, the first fastening member is inserted in the first hole and sequentially penetrates and connects the bone plate cortical bone, the cancellous bone and the lateral bone cortical bone of one vertebra fixed above the intervertebral space, the second hole is opened on the lower part of the bone grafting cavity and faces the front lower part and inclines towards one side of the other bone grafting cavity, the second fastening member is inserted in the second hole and sequentially penetrates and connects the bone plate cortical bone of one vertebra fixed below the intervertebral space, the second fastening member is inserted in the second hole and sequentially penetrates and connects and fixes the bone plate bone cortical bone of the other vertebra below the intervertebral space, Cancellous bone and lateral cortical bone.
Further, in order to better implement the present invention, the first fastening member is a first screw, and the second fastening member is a second screw.
Furthermore, in order to better realize the invention, the included angle between the orthographic projection of the first screw in the coronal plane and the horizontal line is alpha, which is more than or equal to 10 degrees and less than or equal to 45 degrees, the included angle between the orthographic projection of the first screw in the transverse plane and the connecting line of the left transverse convex hole and the right transverse convex hole in the intervertebral space is beta, which is more than or equal to 0 degree and less than or equal to 30 degrees.
Further, in order to better realize the invention, the included angle between the orthographic projection of the first screw in the coronal plane and the horizontal line is 20 degrees, the included angle between the orthographic projection of the first screw in the transverse plane and the connecting line of the left transverse hole and the right transverse hole in the intervertebral space is beta, and the beta is more than or equal to 5 degrees and less than or equal to 10 degrees.
Further, in order to better realize the invention, the included angle between the orthographic projection of the second screw in the coronal plane and the horizontal line is gamma, 15 degrees is larger than or equal to gamma and is smaller than or equal to 45 degrees, the included angle between the orthographic projection of the second screw in the transverse plane and the connecting line of the left transverse convex hole and the right transverse convex hole in the intervertebral space is sigma, and 5 degrees is larger than or equal to sigma and is smaller than or equal to 30 degrees.
Further, in order to better realize the invention, the included angle between the orthographic projection of the second screw in the coronal plane and the horizontal line is 30 degrees, the included angle between the orthographic projection of the second screw in the transverse plane and the connecting line of the left transverse hole and the right transverse hole in the intervertebral space is sigma, and the sigma is more than or equal to 5 degrees and less than or equal to 10 degrees.
Further, in order to better implement the present invention, both the upper end surface and the lower end surface of the fusion cage body are provided with convex anti-slip convex parts.
Furthermore, in order to better implement the invention, the wall of the bone grafting cavity is also provided with a fine hole for the circulation of nutrient substances.
Further, in order to better implement the invention, the fusion device body is a structural member made of medical titanium alloy or polyetheretherketone.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a cervical vertebra side front approach double-skin fixed hook vertebral joint fusion cage, which comprises a fusion cage body part, wherein the fusion cage body part can support intervertebral spaces, and is of a long-strip block structure so as to be implanted into the intervertebral spaces from the cervical vertebra side front approach, bone grafting cavities for filling bone grafting materials are arranged at two ends of the fusion cage body part, the two bone grafting cavities respectively correspond to the left parts of the intervertebral spaces and the right parts of the intervertebral spaces, thus, the bone grafting materials in the two bone grafting cavities can grow at the left parts and the right parts of the intervertebral spaces, a fixing structure is arranged on one bone grafting cavity wall, the fixing structure is sequentially penetrated and fixed on cortical bone, cancellous bone and lateral cortical bone cortical, when in use, one bone grafting cavity without the fixing structure is firstly inserted into the intervertebral spaces from the vertebra side front approach, and then the whole fusion cage is pushed towards the intervertebral spaces, and make the bone grafting chamber that is equipped with fixed knot construct also insert intervertebral space, at this moment, medical personnel can operate fixed knot structure and make it fixed from side the place ahead, like this, then can make this integration ware can be applicable to from vertebra side the place ahead and fix, fix on vertebra end plate cortex lycii, cancellous bone and side cortex lycii in addition, thereby it is more firm to make it fix, in order to do benefit to the growth of bone grafting material more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a lateral anterior approach double-cortical fixation uncinate-vertebral joint fusion cage for cervical vertebrae in an embodiment of the invention;
FIG. 2 is a front view of the structure shown in FIG. 1;
FIG. 3 is a top view of the structure shown in FIG. 1;
fig. 4 is a bottom view of the structure shown in fig. 1.
In the figure:
1-a fusion cage body;
2-bone grafting cavity;
3-a first screw;
4-a second screw;
5-anti-slip bulge;
6-pores.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the embodiment provides a cervical vertebra side front approach double-cortical fixation uncinate joint fusion cage which is used for implanting bone grafting materials into an intervertebral space of a patient from a cervical vertebra side front approach and supporting the intervertebral space.
This fixed hook vertebra joint fusion ware of two cortices of approach of cervical vertebra side place ahead includes fusion ware somatic part 1, this fusion ware somatic part 1 is rectangular block structure, and this fusion ware somatic part 1's the design of the type of adopting anatomy, so that it is better with the end plate laminating of both sides about the intervertebral space, thereby make this fusion ware somatic part 1 can support between both sides about the intervertebral space better, and the fusion ware somatic part 1 of this kind of shape can be applicable to from the implantation of approach of cervical vertebra side place ahead, thereby in-process at the operation need not tractive trachea and esophagus, and can not lead to the fact the damage to original fibrous membrane of patient and ligament, reduce the patient and wipe the probability that produces the difficulty of swallowing, increase postoperative stage stability, promote early rehabilitation training, in order to help the patient to return the job position as soon as possible. Preferably, the fusion device body 1 is a structural member made of medical titanium alloy or polyetheretherketone. Preferably, the shape of the elongated block structure in this embodiment is a crescent or a rectangle.
All be equipped with the bone grafting chamber 2 that is used for filling the bone grafting at the both ends of this integration ware somatic part 1, when integration ware somatic part 1 cartridge is in the intervertebral space, two bone grafting chambers 2 correspond the left part that is located the intervertebral space and the right part in intervertebral space respectively, it is worth noting, this fixed hook vertebra joint fusion ware of two cortices of going into way of cervical vertebra side the place ahead is implanted from the dead ahead on cervical vertebra right side, thus, then can plant the bone in the left part and the right part in intervertebral space, show through the research, when bone is planted in intervertebral space left part and right part, the bone grafting material can be faster better growth, so adopt the fixed hook vertebra joint fusion ware of two cortices of this cervical vertebra side the place ahead going into way to plant the bone, then can obtain better bone grafting effect, in order to help the patient recovered as early as far as possible.
Be equipped with fixed knot on 2 chamber walls in one of them bone grafting chamber and construct, this fixed knot constructs can be worn to connect in proper order and fix at vertebra end plate cortical bone, cancellous bone and side cortical bone, specifically, this fixed knot constructs the setting on the 2 chamber walls in bone grafting chamber that correspond with the intervertebral space right part, medical personnel can follow cervical vertebra side the place ahead and control fixed knot and construct, so that medical personnel operate, and make this cervical vertebra side the place ahead go into the fixed hook vertebra joint of double cortex and fuse the ware and can be applicable to and fix from vertebra side the place ahead, and fix at vertebra end plate cortical bone, cancellous bone and side cortical bone are last, thereby it is fixed more firm to make it fix, in order to do benefit to the growth of bone grafting material more.
As a more preferable embodiment of the present embodiment, in the present embodiment, convex anti-slip projections 5 are provided on both the upper end surface and the lower end surface of the fusion device body 1, and the anti-slip projections 5 can have an anti-slip effect, so that the fusion device body 1 can be more stably installed in the intervertebral space.
As a best mode of the present embodiment, in the present embodiment, a plurality of pores 6 are formed on the wall of the bone implantation cavity 2, so that the nutrient can smoothly flow into the bone implantation cavity 2, and the bone implantation in the bone implantation cavity 2 can grow better.
During the specific use, at first, the bone grafting cavity 2 that does not set up fixed knot constructs inserts the intervertebral space from vertebra side place ahead approach, insert the main part of integration ware somatic part 1 into intervertebral space afterwards and make integration ware somatic part 1 be located intervertebral space rear portion, and make the bone grafting cavity 2 that is provided with fixed knot constructs also insert the intervertebral space, at this moment, two bone grafting cavities 2 can plant the bone in the left part and the right part in intervertebral space, and after the installation, can also plant the bone again in the front side of the main part of integration ware somatic part 1.
Example 2:
in this embodiment, as a best mode of the present embodiment, the fixing structure comprises a first hole, a first fastening member, a second hole and a second fastening member, the first hole is a straight hole and is opened at the upper part of the bone-grafting cavity 2, and the first hole is inclined towards the front upper part and towards one side of the other bone implantation cavity 2, the first fastener is inserted into the first hole and is guided by the first hole to be sequentially penetrated and fixed on the end plate cortical bone, the cancellous bone and the side cortical bone of one vertebra above the intervertebral space, the second hole is also a straight hole and is opened at the lower part of the bone implantation cavity 2, and the second hole is towards the front lower part and inclines towards one side of the other bone grafting cavity 2, and the second fastening piece is inserted into the second hole and is guided by the second hole to be sequentially fixed on the end plate cortical bone, the cancellous bone and the side cortical bone of one vertebra below the intervertebral space in a penetrating way.
Thus, the cage body 1 is fixed to the cortical bone, cancellous bone and lateral cortical bone of the vertebral end plates on the upper and lower sides of the intervertebral space by the fixing structure, so that the cage body 1 can be fixed more firmly.
As a specific implementation manner of this embodiment, the first fastening member in this embodiment is the first screw 3, and the second fastening member is the second screw 4, so that the assembly and disassembly are more convenient, and the locking is firm.
Example 3:
as a best mode for the embodiment 2, the embodiment defines the included angle between the orthographic projection of the first screw 3 in the coronal plane and the horizontal line as alpha, wherein alpha is more than or equal to 10 degrees and less than or equal to 45 degrees, and the included angle between the orthographic projection of the first screw 3 in the transverse plane and the connecting line of the left transverse process hole and the right transverse process hole in the intervertebral space is beta, and beta is more than or equal to 0 and less than or equal to 30 degrees. Like this, then can make first screw 3 on the basis that can be fixed in endplate cortical bone, cancellous bone and side cortical bone of a vertebra above the intervertebral space, this first screw 3 can also perfectly avoid the carotid and can not insert in the marrow that is located the vertebra rear carelessly to guarantee the security when this cervical vertebra side the fixed hook vertebra joint fusion ware of two cortices of going into way in front uses.
More preferably, the angle between the orthographic projection of the first screw 3 in the coronal plane and the horizontal is 20 °, i.e. α is 20 °, and 5 ° ≦ β ≦ 10 °.
In the embodiment, the included angle between the orthographic projection of the second screw 4 in the coronal plane and the horizontal line is defined as gamma, gamma is more than or equal to 15 degrees and less than or equal to 45 degrees, the included angle between the orthographic projection of the second screw 4 in the transverse plane and the connecting line of the left transverse hole and the right transverse hole in the intervertebral space is defined as sigma, and sigma is more than or equal to 5 degrees and less than or equal to 30 degrees. Like this, then can make second screw 4 on the basis that can be fixed in endplate cortical bone, cancellous bone and side cortical bone of a vertebra below the intervertebral space, this second screw 4 can also perfectly avoid the carotid and can not insert in the marrow that is located the vertebra rear carelessly to guarantee the security when this cervical vertebra side the fixed hook vertebra joint fusion ware of two cortices of going into way in front uses.
More preferably, the angle between the orthographic projection of the second screw 4 in the coronal plane and the horizontal is 30 °, i.e. γ is 30 °, and 5 ° ≦ σ ≦ 10 °.
Example 4:
the double-cortical fixation uncinate vertebral joint fusion cage for cervical vertebra side front approach provided by the embodiment comprises a fusion cage body, wherein a bone implanting cavity is arranged at one end of the fusion cage body, and a fixing structure for fixation is arranged at the other end of the fusion cage body. In use, the cage is inserted into the intervertebral space from a lateral anterior approach, the body of the cage body is then placed into the posterior portion of the intervertebral space and subsequently secured using the fixation structure.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a fixed hook vertebra joint of two leathers of cervical vertebra side place ahead approach fuses ware which characterized in that: the bone grafting device comprises a fusion device body part for supporting the intervertebral space, wherein the fusion device body part is of a long-strip block-shaped structure, and two ends or one end of the fusion device body part are provided with bone grafting cavities for filling bone grafting materials;
when bone grafting cavities are arranged at two ends of the fusion cage body part, the two bone grafting cavities respectively correspond to the left part of the intervertebral space and the right part of the intervertebral space;
the fusion cage body is provided with a fixing structure which is used for sequentially penetrating and fixing cortical bone, cancellous bone and lateral cortical bone of the vertebral end plate.
2. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 1, wherein: the both ends of fusion cage somatic part all are equipped with plant the bone cavity just fixed knot constructs and locates one of them plant on the bone cavity, fixed knot constructs including first hole, first fastener, second hole and second fastener, first hole is seted up and is located plant bone cavity upper portion and this first hole towards preceding top and towards another plant bone cavity lopsidedness, first fastener is inserted in the first hole and cross-under in proper order fixes end plate cortical bone, cancellous bone and the side cortical bone of a vertebra above the vertebra clearance, the second hole is seted up and is located plant bone cavity lower part and this second hole towards preceding below and towards another plant bone cavity lopsidedness, the second fastener is inserted in the second hole and cross-under in proper order fixes the cortical bone, cancellous bone and the side cortical bone of a vertebra end plate below the vertebra clearance.
3. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 2, wherein: the first fastener is a first screw, and the second fastener is a second screw.
4. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 3, wherein: the included angle between the orthographic projection of the first screw in the coronal plane and the horizontal line is alpha, alpha is more than or equal to 10 degrees and less than or equal to 45 degrees, the included angle between the orthographic projection of the first screw in the transverse plane and the connecting line of the left transverse protruding hole and the right transverse protruding hole in the intervertebral space is beta, and beta is more than or equal to 0 degrees and less than or equal to 30 degrees.
5. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 4, wherein: the included angle between the orthographic projection of the first screw in the coronal plane and the horizontal line is 20 degrees, the included angle between the orthographic projection of the first screw in the transverse plane and the connecting line of the left transverse protruding hole and the right transverse protruding hole in the intervertebral space is beta, and the beta is more than or equal to 5 degrees and less than or equal to 10 degrees.
6. The lateral anterior approach double cortical fixation uncinate arthrodesis device of any one of claims 3-5, wherein: the included angle between the orthographic projection of the second screw in the coronal plane and the horizontal line is gamma, gamma is more than or equal to 15 degrees and less than or equal to 45 degrees, the included angle between the orthographic projection of the second screw in the transverse plane and the connecting line of the left transverse protruding hole and the right transverse protruding hole in the intervertebral space is sigma, and sigma is more than or equal to 5 degrees and less than or equal to 30 degrees.
7. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 6, wherein: the included angle between the orthographic projection of the second screw in the coronal plane and the horizontal line is 30 degrees, the included angle between the orthographic projection of the second screw in the transverse plane and the connecting line of the left transverse protruding hole and the right transverse protruding hole in the intervertebral space is sigma, and the sigma is more than or equal to 5 degrees and less than or equal to 10 degrees.
8. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 1, wherein: the upper end surface and the lower end surface of the fusion device body are both provided with convex anti-skid convex parts.
9. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 1, wherein: the wall of the bone grafting cavity is also provided with a pore for the circulation of nutrient substances.
10. The lateral anterior approach double-cortical fixation uncinate vertebral joint cage of claim 1, wherein: the fusion cage body is a structural member made of medical titanium alloy or polyether-ether-ketone.
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| CN202010478476.1A CN111588521B (en) | 2020-05-29 | 2020-05-29 | Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage |
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| CN202010478476.1A CN111588521B (en) | 2020-05-29 | 2020-05-29 | Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage |
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| CN111588521B CN111588521B (en) | 2023-02-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839835A (en) * | 2020-08-31 | 2020-10-30 | 四川大学华西医院 | Intervertebral fusion fixer for lateral anterior approach vertebral body reconstruction |
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| CN111839835B (en) * | 2020-08-31 | 2022-04-12 | 四川大学华西医院 | Intervertebral fusion fixer for lateral anterior approach vertebral body reconstruction |
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| CN111588521B (en) | 2023-02-03 |
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