CN203736351U - Transforaminal lumbar interbody fusion cage - Google Patents
Transforaminal lumbar interbody fusion cage Download PDFInfo
- Publication number
- CN203736351U CN203736351U CN201320816110.6U CN201320816110U CN203736351U CN 203736351 U CN203736351 U CN 203736351U CN 201320816110 U CN201320816110 U CN 201320816110U CN 203736351 U CN203736351 U CN 203736351U
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- CN
- China
- Prior art keywords
- main body
- side wall
- front side
- development pin
- intervertebral spinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to a transforaminal lumbar interbody fusion cage, which comprises a main body and a developing needle, wherein the main body comprises a front side wall, a back side wall, an upper surface, a lower surface, a front end and a tail end; the interior of the main body is hollow and a main body inner cavity is formed in the main body; the upper surface and the lower surface are arc concave surfaces as a whole; the front side wall and the back side wall are circular arc-shaped; an arc groove is respectively formed in each of the junctions of the front side wall and the tail end as well as the back side wall and the tail end. The transforaminal lumbar interbody fusion cage complies with the physiological structure of a human body, is proper in size, wall thickness and the end plate contact area, and enough to fill the bone, and the support function is excellent, the bone ingrowth is ensured and the implantation is convenient.
Description
Technical field
This utility model relates to a kind of intervertebral disc of lumbar vertebra implant, the breast Lumbar Fusion device of a kind of intervertebral spinal fusion approach that is specifically used for treating intervertebral disc of lumbar vertebra degeneration and lumbar instability.
Background technology
Along with the aging of China's population, the incidence rate of degenerative diseases of lumbar vertebrae and other pathological changes rises gradually, because regression causes lumbar spondylolisthesis or unstable and other disc diseases, need to carry out interbody fusion, at present more for the mode kind merging between vertebral body.Wherein between intervertebral spinal fusion vertebral body, merging is a kind of newer method; this technology has the incomplete excision of row one side facet joints in patients and can realize between vertebral body and merging; that protection dural sac and nerve root, minimizing adjacent segment lose is compensatory, it is high to recover spinal column normal sequence, in early days braking and fusion rate; wound is little; without tractive nerve root; meet biomechanics, degree of stability at once can be provided, reduce the features such as the iatrogenic destruction of bone structure.
Summary of the invention
For overcoming the existing shortcomings and deficiencies of prior art, a kind of lumbar fusion cages providing for intervertebral spinal fusion approach fusion is provided this utility model, meet human physiological structure, there is suitable own vol, all wall thickness and soleplate contact area, can fill sclerotin by q.s, have good support function, can ensure that again bone grows into, and implant convenient.
This utility model is realized by the following technical solutions: the lumbar fusion cages of intervertebral spinal fusion approach, comprise main body and development pin, described main body comprises front side wall, rear wall, upper surface, lower surface, front end and end, and the inner hollow of described main body forms main body inner chamber; Described upper surface, lower surface be equal camber convex surface on the whole; Described front side wall and rear wall are all circular-arc, and the intersection of front side wall, rear wall and end is respectively equipped with arc groove.
Preferably, the radius of described arc groove is 0.75-1.5mm, and radian is 150 °-180 °, and length is consistent with body height.
Preferably, described upper surface, lower surface all have projection.
Preferably, described projection is four rib vertebra projections.
Preferably, on described front side wall, rear wall, be equipped with bone grafting window.
Preferably, in human body sagittal plain direction, described front side wall is higher than rear wall.
Preferably, described development pin comprises front development pin, left development pin and right development pin; Front development pin is positioned at front side wall central authorities; Left development pin is positioned at front end; Right development pin is positioned at end.
Preferably, described development pin is all revealed in the upper surface of main body, runs through in vertical direction main body; Development pin all adopts polyetheretherketonematerials materials.
Preferably, the outer surface of described front end is circular-arc; The outer surface of described end is column face, and its radius of curvature is 5-8mm, and radian is 100 °-135 °.
Compared with prior art, the utlity model has following advantage and beneficial effect:
1, to put into final position parallel with anterior margin of vertebral body for this utility model fusion device intervertebral spinal fusion, according to spinal biomechanics three post theories, can effective integration part front pillar and center pillar, relatively meet the biomechanical characterization (stress of lumbar vertebra 80% is by conducting between front pillar and vertebral body) of spinal column.Compared with fusiformis fusion device, the bone contact area of the shape of this utility model fusion device and upper hypocentrum is larger, effectively dispersive stress, improve fusion rate, compared with ring columnar net fusion device, this utility model fusion device is difficult for cutting damage version eventually in ensureing bone grafting amount, can effectively avoid the generation of the collapse of vertebra of postoperative appearance, compared with the cylindric fusion device of screw-in, this utility model fusion device is little to the early damage of the whole version of bone, and obviously stable than screw-in fusion device to the support of fusion device both sides.
2, implant conveniently, install simple.Fusion device far-end, for sub warhead designs, reduces resistance, and it is convenient to implant.The arc groove that the place that crosses of main body front side wall, rear wall and main body end arranges respectively, installing apparatus can closely be connected with this arc groove by end, can easily put into operative region, rotate apparatus and can make fusion device finally put into ideal position, and apparatus easily exit.
3, the four rib vertebra projections that main body upper surface and lower surface arrange, increase frictional force and prevent from skidding off in integration region, for bone between vertebral body merges the good condition of creating.
4, the main body of this utility model fusion device is in human body sagittal plain direction, after having front height, low stringer designs, the segmental lordosis of considering lumbar vertebra in supporting disc height, is conducive to recover patient's lumbar physiological-curvature, reduces the incidence rate of neighbouring section intervertebral disc degeneration.
Brief description of the drawings
Fig. 1 is this utility model schematic top plan view;
Fig. 2 is this utility model schematic side view;
Fig. 3 is that this utility model master looks schematic diagram;
Fig. 4 is axonometric chart of the present utility model;
In figure, 1---main body, 2---development pin, 3---front end, 4---end, 6---front side wall, 7---rear wall, 8---rectangular pyramid projection, 9---bone grafting window, 10---upper surface, 11---lower surface, 12---arc groove.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As Figure 1-4, this utility model provides a kind of intervertebral spinal fusion to enter lumbar fusion cages, comprises main body 1, development pin 2, and global shape is like Fructus Musae, and front side wall 6 is all circular-arc with rear wall 7.Front side wall 6 is similar to adjacent vertebral bodies leading edge, dissects shape design.The inner hollow of main body 1 forms main body inner chamber, is convenient to fill spongy bone.
The outer surface of body front end 3 is circular-arc, facilitates main body 1 to implant joint of lumbar vertebra gap, and resistance is little, easily implants.The outer surface of main body end 4 is column face, its radius of curvature 5-8mm, and radian is 100 °-135 °, height is consistent with main body.Be respectively equipped with narrow zone symmetrically at front side wall 6, rear wall 7 with the intersection of end 4, form an arc groove 12.The radius 0.75-1.5mm of arc groove 12,150 °-180 ° of radians, length is consistent with body height, can realize installing apparatus to the fusion device clamping at implantation initial stage; When implantation, make fusion device break-in, final parallel with anterior margin of vertebral body; After implantation, make installing apparatus and fusion device easily separated.In whole implantation process, arc groove 12 can make fusion device fully contact with apparatus, stressed even, should not damage.
Main body upper surface 10, lower surface 11 equal camber convex surface on the whole, and the peak of arc convex is positioned at the central authorities of upper surface, lower surface, and the angle of upper surface and lower surface is 4 °.In addition, main body upper surface 10, lower surface 11 all have irregular four rib vertebra projections 8, to increase the frictional force between fusion device and corpus vertebrae soleplate, prevent that fusion device from sliding from upper and lower terminal plate of vertebral body face, and the stable interbody bone that is beneficial to of fusion device is merged.On main body front side wall 6, rear wall 7, be equipped with bone grafting window 9, the design of bone grafting window 9 can provide nutrition and blood supply for the sclerotin in fusion device, provides good physiological condition for bone merges.
Bone grafting window on main body rear wall 7 has one, length 6.5-8.5mm, width 2.5-4.0mm; Bone grafting window on front side wall 6 has two, length 4.5-8mm, width 2.5-4.0mm.Bone grafting window on front side wall, rear wall all connects with main body inner chamber.In human body sagittal plain direction, front side wall 6 is higher than rear wall 7, and the angle of its top and bottom is 0-5 °; Stringer low after front height designs, and considers the segmental lordosis of lumbar vertebra in supporting disc height, is conducive to recover patient's lumbar physiological-curvature, reduces the incidence rate of neighbouring section intervertebral disc degeneration.
Development pin 2 diameters are 0.8mm, comprise front development pin, left development pin and right development pin.Front development pin is positioned at front side wall 6 central authorities, apart from anterolateral surface apart from 1.5mm; Left development pin is positioned at front end 3, apart from front end outer surface 0.6mm; Right development pin is positioned at end 4, apart from distal outer surface 1.0mm.Development pin is all revealed in the upper surface 10 of main body, runs through in vertical direction main body.Development pin 2 adopts polyether-ether-ketone (PEEK) material, good biocompatibility, and its elastic modelling quantity and human body proximity, reduce stress shielding, promotes to merge; Can pass through x line and observe the position of assessment Invasive lumbar fusion device from positive and side, can not produce artifact and block, facilitate doctor to assess fusion situation, be the material of current best manufacture fusion device.
Above-described embodiment is preferably embodiment of this utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (9)
1. the lumbar fusion cages of intervertebral spinal fusion approach, comprises main body and development pin, and described main body comprises front side wall, rear wall, upper surface, lower surface, front end and end, it is characterized in that, the inner hollow of described main body forms main body inner chamber; Described upper surface, lower surface be equal camber convex surface on the whole; Described front side wall and rear wall are all circular-arc, and the intersection of front side wall, rear wall and end is respectively equipped with arc groove.
2. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, the radius of described arc groove is 0.75-1.5mm, and radian is 150 °-180 °, and length is consistent with body height.
3. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, described upper surface, lower surface all have projection.
4. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 3, is characterized in that, described projection is four rib vertebra projections.
5. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, is equipped with bone grafting window on described front side wall, rear wall.
6. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, in human body sagittal plain direction, described front side wall is higher than rear wall.
7. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, described development pin comprises front development pin, left development pin and right development pin; Front development pin is positioned at front side wall central authorities; Left development pin is positioned at front end; Right development pin is positioned at end.
8. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 7, is characterized in that, described development pin is all revealed in the upper surface of main body, runs through in vertical direction main body; Development pin all adopts polyetheretherketonematerials materials.
9. the lumbar fusion cages of intervertebral spinal fusion approach according to claim 1, is characterized in that, the outer surface of described front end is circular-arc; The outer surface of described end is column face, and its radius of curvature is 5-8mm, and radian is 100 °-135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816110.6U CN203736351U (en) | 2013-12-11 | 2013-12-11 | Transforaminal lumbar interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816110.6U CN203736351U (en) | 2013-12-11 | 2013-12-11 | Transforaminal lumbar interbody fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203736351U true CN203736351U (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320816110.6U Expired - Fee Related CN203736351U (en) | 2013-12-11 | 2013-12-11 | Transforaminal lumbar interbody fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203736351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103622767A (en) * | 2013-12-11 | 2014-03-12 | 广州聚生生物科技有限公司 | Lumbar fusion cage for intervertebral foramen approach |
| CN104706447A (en) * | 2015-03-24 | 2015-06-17 | 李鹏 | Bionic bone trabecula lumbar vertebra fusion cage and manufacturing method thereof |
-
2013
- 2013-12-11 CN CN201320816110.6U patent/CN203736351U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103622767A (en) * | 2013-12-11 | 2014-03-12 | 广州聚生生物科技有限公司 | Lumbar fusion cage for intervertebral foramen approach |
| CN104706447A (en) * | 2015-03-24 | 2015-06-17 | 李鹏 | Bionic bone trabecula lumbar vertebra fusion cage and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20181211 |