CN107252372B - Mortise and tenon type cervical vertebra intervertebral fixer - Google Patents
Mortise and tenon type cervical vertebra intervertebral fixer Download PDFInfo
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- CN107252372B CN107252372B CN201710345946.5A CN201710345946A CN107252372B CN 107252372 B CN107252372 B CN 107252372B CN 201710345946 A CN201710345946 A CN 201710345946A CN 107252372 B CN107252372 B CN 107252372B
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- intervertebral
- fixer
- mortise
- intervertebral fixer
- bearing
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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
Abstract
The invention relates to the field of medical equipment, in particular to a mortise-type cervical vertebra intervertebral fixer, which comprises an intervertebral fixer body part used for being inserted into an intervertebral space of cervical vertebra and a vertical wing-shaped part rotationally connected with one end of the intervertebral fixer body part, wherein the vertical wing-shaped part comprises a bearing and tenons, the bearing is used for being in limit rotational connection with the intervertebral fixer body part, and the bearing extends out of the tenons towards two sides of the intervertebral fixer body part along the length direction of the cervical vertebra. Compared with the prior art, the device is suitable for intervertebral fusion fixation of pathological segments in anterior cervical decompression operation, and when in use, tenon-and-mortise fixation between tenons of vertical wing-shaped parts and bone grooves of upper and lower vertebral bodies can extrude the upper and lower vertebral bodies to the body of an intervertebral fixer, so that the upper and lower vertebral bodies and the intervertebral fixer form a firm and stable whole, the stability and the firmness are better, the depth of the fixer is limited, the rollback of the fixer is prevented, and favorable conditions are provided for final fusion.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a mortise and tenon type cervical intervertebral fixator.
Background
The main pathological basis of cervical spondylosis is that the intervertebral disc is degenerated and protrudes, the bone at the rear edge of the adjacent vertebral body is formed, and the rear longitudinal ligament is thickened or ossified, so that spinal cord, nerve root and blood vessel are pressed. For cervical spondylosis surgery, the main focus is on the intervertebral space. Classical surgical procedures are the removal of degenerated herniated disk, the removal of the bone mass at the posterior edge of the vertebral body, the removal of thickened or ossified posterior longitudinal ligaments and their adhesions, sometimes with simultaneous nerve root decompression, followed by fusion in the intervertebral bone graft. The cervical vertebra decompression fusion operation uses the vertebral body or intervertebral disc of the patient as the center, and the normal vertebral body from the upper position to the lower position of the lesion area is used as the intervertebral bone or the intervertebral implant, so that a plurality of segments are connected in a bone way and fused into a whole to form a mechanical whole, thereby achieving the purposes of treating the spinal lesion, eliminating the pain, preventing deformity, reconstructing the spinal stability, protecting spinal nerves and the like.
The mortise and tenon joint is a concave-convex combined connection mode adopted on two components. The convex part is called tenon (or tenon); the concave part is called mortise (or mortise and mortise), and the mortise and mortise are meshed to play a role of connection. This is the main structural mode of ancient China building, furniture and other wooden devices. The mortise and tenon joint structure is the combination of mortise and tenon joint, is ingenious combination of more and less parts, high and low parts and long and short parts, and can effectively limit the twisting of the component parts in all directions. The most basic mortise and tenon structure comprises two components, wherein a tenon of one component is inserted into a mortise of the other component, so that the two components are connected and fixed.
The mortise and tenon structure is a main structural mode used in the manufacturing process of ancient Chinese building construction and traditional furniture. Each component is mutually combined and mutually supported to change the single thin individual into a tightly screwed integral, which overcomes the defect of single thin individual and the integral combined can bear huge stress. In addition, the special flexible structure body can bear a large load and simultaneously can generate certain deformation. This is why many ancient Chinese buildings were not fixed by one iron nail, but could be made by the method of the invention as a result of the fact that the ancient Chinese buildings were standing for centuries, namely, the method of the invention was made by the method of the invention. Mortise and tenon joint is a profound miniature of Chinese traditional culture, is the essence of ancient craftsman's skills, and is a very exquisite invention and creation.
Autologous ilium grafting has been considered a "gold standard" for intervertebral fusion, however, pure use of bone graft blocks lacks effective initial stability, and bone graft blocks present the risk of loosening, backing out, compressing the trachea, esophagus or spinal cord, etc. The bone grafting block may be abnormal in activity after the later load, and certain disunion and false joint formation rate may occur. Meanwhile, the bone grafting block also lacks of firmness, decalcification and absorption of bone grafting block bone are easy to occur, so that the height of the front vertebral body is reduced, and the rear articular process joint bears abnormal stress, thereby causing osteoarthritis and hyperosteogeny. In order to solve the above problems, researchers have designed a wide variety of intervertebral implants for reconstructing the height of the intervertebral space, maintaining the physiological curvature of the cervical vertebrae, and satisfying the requirement of firm fixation. The prior cervical intervertebral fixing device on the market is generally of a hollow column or cube structure, and is fixed by toothed protrusions on the upper surface and the lower surface and screws screwed into upper vertebral bodies and lower vertebral bodies, so that the cervical intervertebral fixing device is generally required to be used in combination with a matched cervical anterior fixing plate or locking steel plate to increase stability.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention aims at: the mortise and tenon type cervical vertebra intervertebral fixer is suitable for intervertebral fusion fixation of pathological change sections in anterior cervical decompression operation, can tightly embed the intervertebral fixer into an intervertebral space, combines an upper vertebral body and a lower vertebral body into a firm whole, achieves the purposes of limiting the depth of the fixer and preventing the fixer from backing back, and has good stability and firmness.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the mortise and tenon type cervical vertebra intervertebral fixer comprises an intervertebral fixer body part for inserting into an intervertebral space of cervical vertebra and a vertical wing-shaped part rotationally connected to one end of the intervertebral fixer body part, wherein the vertical wing-shaped part comprises a bearing and tenons, the bearing is used for limiting and rotationally connecting with the intervertebral fixer body part, and the bearing extends out of the tenons from two sides of the intervertebral fixer body part along the length direction of the cervical vertebra. After the structure is adopted, the bone knife chisels the front edge bone grooves of the upper and lower vertebral bodies of the intervertebral space of the operation section to form tenons during operation, after the intervertebral space of the cervical vertebra is implanted into the intervertebral space, tenons of the vertical wing-shaped parts are inserted into the tenons, and the tenons are mortise-jointed with each other, so that the purposes of tightly fixing the intervertebral space fixator and the cervical vertebra and limiting the depth of the intervertebral space fixator body implantation are achieved.
The one end of intervertebral fixer body is equipped with the recess, and the bearing is located the recess, and the bearing butt is in the bottom surface of recess, and the bottom surface of recess is equipped with the cylinder curved surface of inwards sunkening, cooperates with it, and the bearing is equipped with outside bellied cylinder curved surface, and the bearing is equipped with spacing card shoulder, is located outside bellied cylinder curved surface's both sides respectively, corresponds spacing card shoulder, and the bottom surface of recess is equipped with spacing inclined plane. By adopting the structure, the horizontal placement of the intervertebral fixer body can be ensured by controlling the vertical direction of the vertical wing-shaped parts. The vertical wing-shaped part and the intervertebral fixer body have a certain activity degree, and the angle can be adjusted according to the needs so as to adapt to the included angles formed by the intervertebral space of different individuals and pathological change sections and the longitudinal axis of the cervical vertebra.
The vertical wing-shaped part is combined with the intervertebral fixer body part through the cylindrical bolt, and the bearing rotates by taking the cylindrical bolt as the axis. After the structure is adopted, the intervertebral fixator is convenient to assemble during operation.
The two sides of the body of the intervertebral fixer are provided with a plurality of clamping teeth, the direction of the clamping teeth faces the length direction of the human vertebra, and the clamping teeth positioned at the two sides of the body of the intervertebral fixer are symmetrically arranged. Providing good support and holding for the body of the intervertebral fixator.
The latch is of a right-angle triangular prism structure, and the inclined plane of the latch faces the insertion direction of the intervertebral fixer body. The above is the most preferred embodiment of the latch structure.
The latch comprises a large latch and a small latch, wherein the large latch is arranged on two sides of the small latch and is close to two ends of the body of the intervertebral fixer. The above is the most preferred embodiment of the latch arrangement.
The body of the intervertebral fixer is provided with a hollow. Can be used for placing bone particles, is beneficial to the fusion between bones and can reduce the overall weight of the intervertebral fixer.
The hollowed-out parts of the intervertebral fixer body comprise a crescent-shaped hollowed-out part arranged in the middle of the intervertebral fixer body and trapezoidal hollowed-out parts arranged on two sides of the intervertebral fixer body. The above structure is a preferred embodiment.
Horizontal grooves are arranged on two sides of the body of the intervertebral fixer, and the connecting line of the two horizontal grooves is perpendicular to the length direction of the human vertebra. Is used for fixing the holder during operation.
The body of the intervertebral fixer is gradually narrowed along the direction of inserting the intervertebral space. Facilitating insertion into the intervertebral space.
In general, the invention has the following advantages:
compared with the prior art, the device is suitable for intervertebral fusion fixation of pathological segments in anterior cervical decompression operation, and when in use, tenon-and-mortise fixation between tenons of vertical wing-shaped parts and bone grooves of upper and lower vertebral bodies can extrude the upper and lower vertebral bodies to the body of an intervertebral fixer, so that the upper and lower vertebral bodies and the intervertebral fixer form a firm and stable whole, the stability and the firmness are better, the depth of the fixer is limited, the rollback of the fixer is prevented, and favorable conditions are provided for final fusion.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a mortise and tenon type cervical intervertebral disc fixator according to the present invention.
Fig. 2 is a front view of one embodiment of the mortise and tenon type cervical intervertebral disc fixator of the present invention.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a top view of fig. 2.
In fig. 1 to 4, 1 is an intervertebral fixator body; 2 is a vertical wing-like member; and 3 is a cylindrical bolt.
Fig. 5 is a schematic perspective view of an intervertebral fixer body of the mortise and tenon type cervical vertebra intervertebral fixer of the present invention.
In FIG. 5, 1-1 is a groove; 1-2 are hollow parts of a crescent; 1-3 are cylindrical curved surfaces which are concave inwards; 1-4 are trapezoidal hollows; 1-5 are horizontal grooves; 1-6 are small latch teeth; 1-7 are large latch teeth; 1-8 are cylindrical jacks; 1-9 are limit inclined planes.
Fig. 6 is a schematic perspective view of a vertical wing-shaped unit of the mortise and tenon type cervical vertebra intervertebral fixator of the present invention.
Fig. 7 is a sagittal view schematic of the embodiment of fig. 6.
In fig. 6 to 7, 2-1 is a bearing; 2-2 is tenon; 2-3 is a cylindrical curved surface protruding outwards; 2-4 are cutting edges; 2-5 are cylindrical bolts; and 2-6 are limit clamping shoulders.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1 to 4, the mortise and tenon type cervical vertebra intervertebral fixer comprises an intervertebral fixer body 1 for inserting into an intervertebral space of cervical vertebra, and a vertical wing-shaped part 2 rotatably connected to one end of the intervertebral fixer body, wherein as shown in fig. 5 to 7, the vertical wing-shaped part 2 comprises a bearing 2-1 and a tenon 2-2, the bearing 2-1 is used for limiting and rotatably connecting with the intervertebral fixer body 1, and the tenon 2-2 extends from the bearing 2-1 to two sides of the intervertebral fixer body 1 along the length direction of the cervical vertebra. After the structure is adopted, the bone knife chisels the bone grooves at the front edge of the upper and lower vertebral bodies of the operation section to form tenons during operation, after the intervertebral fixer body 1 is implanted into the intervertebral space, the tenons 2-2 of the vertical wing-shaped parts 2 are inserted into the mortises, and the tenons 2-2 and the mortises are mutually mortise-jointed, so that the purposes of tightly fixing the intervertebral fixer and the cervical vertebra and limiting the depth of the intervertebral fixer body 1 implanted into the intervertebral space are achieved. The surface of the vertical wing-shaped part 2 facing the opposite direction of the intervertebral fixer body 1 is a smooth cambered surface, and the tenon 2-2 is provided with a sharp cutting edge 2-4 facing the intervertebral fixer body 1. The sharp cutting edge 2-4 facilitates insertion of the tenon 2-2 into the bone slot gap when the intervertebral disc holder is implanted into the intervertebral space.
As shown in fig. 1 to 7, one end of the body 1 of the intervertebral fixer is provided with a groove 1-1, a bearing 2-1 is positioned in the groove 1-1, the bearing 2-1 is abutted against the bottom surface of the groove 1-1, the bottom surface of the groove 1-1 is provided with an inward concave cylindrical curved surface 1-3, the bearing 2-1 is provided with an outward convex cylindrical curved surface 2-3 in cooperation with the inward concave cylindrical curved surface, the bearing 2-1 is provided with a limiting clamping shoulder 2-6 which is respectively positioned on two sides of the outward convex cylindrical curved surface 2-3 and corresponds to the limiting clamping shoulder 2-6, and the bottom surface of the groove 1-1 is provided with a limiting inclined surface 1-9. With this structure, the horizontal placement of the intervertebral fixer body 1 can be ensured by controlling the vertical direction of the vertical wing-shaped part 2. The vertical wing-shaped part 2 and the intervertebral fixer body 1 have a certain activity degree, and the angle can be adjusted according to the needs so as to adapt to the included angles formed by the intervertebral space of different individuals and pathological sections and the longitudinal axis of the cervical vertebra. Meanwhile, the cooperation of the limiting clamping shoulders 2-6 and the limiting inclined planes 1-9 enables the bearing 2-1 to rotate within a limited range, so that the vertical wing-shaped part 2 is ensured not to excessively rotate and is within the movement limit of the normal cervical vertebra joint of a human body. The vertical wing-shaped part 2 is combined with the intervertebral fixer body 1 through the cylindrical bolt 2-5, and the bearing 2-1 rotates by taking the cylindrical bolt 2-5 as the axis. After the structure is adopted, the cylindrical plug pins 2-5 are only required to be inserted into the cylindrical plug holes 1-8 arranged on the intervertebral fixer body 1, so that the intervertebral fixer can be assembled during operation.
As shown in fig. 1 to 5, a plurality of teeth are provided on both sides of the body 1 of the intervertebral fixer, the direction of the teeth faces the length direction of the human vertebra, and the teeth on both sides of the body 1 of the intervertebral fixer are symmetrically arranged. The clamping teeth are unidirectional clamping teeth, and the unidirectional clamping teeth on the two sides of the intervertebral fixer body 1 are tightly attached to the bottom top two sides of the upper and lower vertebrae, so that the intervertebral fixer has good holding force, and the purpose of fixing the intervertebral fixer and limiting the rollback of the intervertebral fixer is achieved. The latch is of a right-angle triangular prism structure, and the inclined plane of the latch faces the insertion direction of the intervertebral fixer body 1. The above is the most preferred embodiment of the latch structure. The latch comprises a large latch 1-7 and a small latch 1-6, wherein the large latch 1-7 is arranged on two sides of the small latch 1-6 and is close to two ends of the intervertebral fixer body 1. The above is the most preferred embodiment of the latch arrangement.
As shown in fig. 1 to 5, the intervertebral fixer body 1 is provided with a hollow. Can be used for placing bone particles, is beneficial to the fusion between bones and can reduce the overall weight of the intervertebral fixer. The hollow-out of the intervertebral fixer body 1 comprises a crescent-shaped hollow-out 1-2 arranged in the middle of the intervertebral fixer body 1 and trapezoidal hollow-out 1-4 arranged on two sides of the intervertebral fixer body. The above structure is a preferred embodiment. Horizontal grooves 1-5 are arranged on two sides of the intervertebral fixer body 1, and the connecting line of the two horizontal grooves 1-5 is perpendicular to the length direction of human vertebrae. . Is used for fixing the holder during operation. The intervertebral holder body 1 tapers in the direction of insertion into the intervertebral space. Facilitating insertion into the intervertebral space.
As shown in fig. 1 to 7, the present invention has the following advantages in general:
compared with the prior art, the cervical vertebra intervertebral fixing device is suitable for intervertebral fusion fixation of pathological segments in anterior cervical decompression operation, tenon 2-2 of the vertical wing-shaped part 2 and mortise-and-mortise fixation between bone grooves of upper and lower vertebral bodies can extrude the upper and lower vertebral bodies to the intervertebral fixer body 1, so that the upper and lower vertebral bodies and the intervertebral fixer form a firm and stable whole, the stability and the firmness are better, the depth of the fixer is limited, the rollback of the fixer is prevented, and favorable conditions are provided for final fusion.
As shown in fig. 1 to 7, the following specifically describes the method of using the present fixator:
after the decompression of the anterior cervical surgery is completed, a vertical wing-shaped part 2 with a proper height is selected, if a plurality of sections are needed to be fixed, and the height of the tenon 2-2 is less than half of the height of the vertebral body. And (3) taking the height of the tenon 2-2 as a reference, and respectively chiseling bone grooves with corresponding height, width and depth on the front edges of the upper and lower vertebral bodies of the intervertebral space of the operation section by using a bone knife, wherein the direction of the bone grooves is kept vertical to the intervertebral space.
The height and width of the intervertebral space are detected according to the surgical test model, and the most suitable specification of the cervical vertebra and intervertebral fixer body 1 is determined by combining the experience of an operator. After the cervical vertebra and intervertebral fixer body 1 is selected, bone slices or autologous ilium or allogenic bone grains which are chiseled by the mortises are implanted into the hollowed-out space of the cervical vertebra and intervertebral fixer body 1 and pressed tightly, so that the bone grafting blocks fill the intervertebral fixer body 1 and are preferably flush with the top and bottom surfaces and the left and right side surfaces.
The bearing 2-1 in the middle of the vertical wing-shaped part 2 is embedded into the groove 1-1 at the front end of the intervertebral fixer body 1, and after the embedding is accurate, the cylindrical bolt 2-5 is inserted into the bearing 2-1 of the vertical wing-shaped part 2 and the cylindrical jack 1-8 at the front end of the intervertebral fixer body 1. The stability and the rotational mobility between the vertical wing-shaped part 2 fixed by the combination and the intervertebral fixer body 1 are tested, and the mortise and tenon type cervical vertebra intervertebral fixer is assembled and prepared.
The remote fork structure of the holder (which is universal with the product used by the prior interbody fusion cage) is placed into the horizontal grooves 1-5 on both sides of the mortise and tenon type cervical vertebra interbody fixer body 1, and the proximal bolts of the holder are screwed to ensure that the holder is well fixed with the interbody fixer body 1.
The narrower end of the intervertebral fixer body 1 is aligned with the intervertebral space, tenons 2-2 on two sides of the vertical wing-shaped part 2 along the length direction of the cervical vertebra are aligned with bone grooves, the proximal end of a holder is hit, the hit force and the rhythm are controlled, and the implantation direction and the implantation depth of the intervertebral fixer body 1 are closely observed. The front edge of the intervertebral fixer body 1 and the bottom surface of the vertical wing-shaped part 2 are kept flush with the front edges of the upper and lower vertebral bodies, and the mortise and tenon type cervical vertebra intervertebral fixer is implanted in place.
The handle of the holder is moderately lifted, the fixing depth and the firmness degree of the mortise and tenon type cervical vertebra intervertebral fixer are checked, and the near-end bolt of the holder is unscrewed. And finishing the placement of the mortise and tenon type cervical vertebra fixer.
The mortise and tenon type cervical vertebra and intervertebral fixer can be singly used in the anterior cervical decompression operation, or used for assisting the fixation of a anterior cervical locking steel plate, or used in combination with the posterior cervical decompression pedicle screw rod internal fixation operation. At the same time, the height of the vertical wing-shaped part 2 is not more than half of the height of the vertebral body, so that the device can also be used for carrying out the operation of pathological changes between the vertebral bodies of two or more sections in succession. The specific situation needs to be comprehensively considered by combining the illness state of a patient and the experience of an operator.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (8)
1. Mortise and tenon type cervical vertebra intervertebral fixer, its characterized in that: the device comprises an intervertebral fixer body part for inserting into an intervertebral space of cervical vertebra and a vertical wing-shaped part rotationally connected to one end of the intervertebral fixer body part, wherein the vertical wing-shaped part comprises a bearing and tenons, the bearing is used for limiting and rotationally connecting with the intervertebral fixer body part, and the bearing extends out of the tenons along the length direction of the cervical vertebra towards two sides of the intervertebral fixer body part respectively; the intervertebral fixer comprises an intervertebral fixer body, a bearing, a limiting clamping shoulder, a limiting inclined plane, a limiting sleeve and a limiting sleeve, wherein one end of the intervertebral fixer body is provided with a groove, the bearing is positioned in the groove and is abutted to the bottom surface of the groove, the bottom surface of the groove is provided with an inwards concave cylindrical curved surface which is matched with the groove, the bearing is provided with an outwards convex cylindrical curved surface, the bearing is provided with the limiting clamping shoulder and is respectively positioned at two sides of the outwards convex cylindrical curved surface, the limiting clamping shoulder corresponds to the limiting clamping shoulder, and the bottom surface of the groove is provided with the limiting inclined plane; the vertical wing-shaped component is combined with the intervertebral fixer body through the cylindrical bolt, and the bearing rotates by taking the cylindrical bolt as an axle center.
2. The mortise and tenon type cervical intervertebral fixator of claim 1, wherein: the two sides of the body of the intervertebral fixer are provided with a plurality of clamping teeth, the direction of the clamping teeth faces the length direction of the human vertebra, and the clamping teeth positioned at the two sides of the body of the intervertebral fixer are symmetrically arranged.
3. The mortise and tenon type cervical intervertebral fixator of claim 2, wherein: the latch is of a right-angle triangular prism structure, and the inclined plane of the latch faces the insertion direction of the intervertebral fixer body.
4. A mortise and tenon type cervical intervertebral fixator according to claim 3, characterized in that: the latch comprises a large latch and a small latch, wherein the large latch is arranged on two sides of the small latch and is close to two ends of the body of the intervertebral fixer.
5. The mortise and tenon type cervical intervertebral fixator of claim 1, wherein: the body of the intervertebral fixer is provided with a hollow.
6. The mortise and tenon type cervical intervertebral fixator of claim 5, wherein: the hollowed-out parts of the intervertebral fixer body comprise a crescent-shaped hollowed-out part arranged in the middle of the intervertebral fixer body and trapezoidal hollowed-out parts arranged on two sides of the intervertebral fixer body.
7. The mortise and tenon type cervical intervertebral fixator of claim 1, wherein: horizontal grooves are arranged on two sides of the body of the intervertebral fixer, and the connecting line of the two horizontal grooves is perpendicular to the length direction of the human vertebra.
8. The mortise and tenon type cervical intervertebral fixator of claim 1, wherein: the body of the intervertebral fixer is gradually narrowed along the direction of inserting the intervertebral space.
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| CN201710345946.5A CN107252372B (en) | 2017-05-17 | 2017-05-17 | Mortise and tenon type cervical vertebra intervertebral fixer |
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| CN201710345946.5A CN107252372B (en) | 2017-05-17 | 2017-05-17 | Mortise and tenon type cervical vertebra intervertebral fixer |
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| FR2841123B1 (en) * | 2002-06-25 | 2004-08-27 | Hassan Razian | IMPROVED INTERVERTEBRAL CAGE |
| TW200922514A (en) * | 2007-11-27 | 2009-06-01 | Jun-Fu Lin | Method of support and fastening two vertebral bodies of spine and structure thereof |
| FR2926457A1 (en) * | 2008-01-17 | 2009-07-24 | Warsaw Orthopedic Inc | INTERVERTEBRAL CAGE AND VERTEBRAL FUSION DEVICE HAVING THE SAME |
| US8968405B2 (en) * | 2009-01-20 | 2015-03-03 | Incite Innovation Llc | Interbody fusion device and method of operation |
| WO2010148186A1 (en) * | 2009-06-17 | 2010-12-23 | Synthes Usa, Llc | Intervertebral implant |
| CN102335051A (en) * | 2011-10-21 | 2012-02-01 | 浙江科惠医疗器械有限公司 | Cervical spine locking and fusion device |
| EP2628466B1 (en) * | 2012-02-17 | 2017-04-05 | Medacta International S.A. | Intervertebral implant with improved fastening system for the fixing plate |
| CN207886318U (en) * | 2017-05-17 | 2018-09-21 | 暨南大学 | Mortise and tenon type cervical intervertebral fixator |
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