CN103126788B - Absorbable lumbar facet joint fusion cage - Google Patents
Absorbable lumbar facet joint fusion cage Download PDFInfo
- Publication number
- CN103126788B CN103126788B CN201310062228.9A CN201310062228A CN103126788B CN 103126788 B CN103126788 B CN 103126788B CN 201310062228 A CN201310062228 A CN 201310062228A CN 103126788 B CN103126788 B CN 103126788B
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- CN
- China
- Prior art keywords
- lumbar vertebra
- articular process
- insertion section
- lumbar
- fusion
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- 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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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
-
- 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
Abstract
The present invention is absorbable lumbar facet joint fusion cage, the elasticity be made up of the polymeric material containing osteogenic factor being absorbed by the body merges insertion section body having and inserts between superior articular process of lumbar vertebra and lumbar vertebra inferior articular process, be positioned at the superior articular process of lumbar vertebra fixed part that side, insertion section and superior articular process of lumbar vertebra coordinate away from the position of insertion section, be positioned at the lumbar vertebra inferior articular process fixed part that insertion section opposite side and lumbar vertebra inferior articular process coordinate away from the position of insertion section, does the present invention have certain mechanical strength and promotes skeletonization? good biocompatibility, along with Facet Joints merges fixing and degraded and absorbed voluntarily, second operation is not needed to take out, dashed forward by fixing lower articular and implant the osteogenic factor of promotion osteogenesis and merge fixing for Facet Joints.
Description
technical field:
The invention belongs to the medical instruments field merged for Facet Joints, particularly relate to and connect that lumbar vertebra lower articular is prominent forms " bone bridge " and by absorbable lumbar facet joint fusion cage fixing for corresponding lumbar motion segment together
background technology:
The fixing fusion of lumbar vertebra is the diseases such as treatment degenerative diseases of lumbar vertebrae, tuberculosis and tumor and the fixed form that the important means of rebuilding spinal stability adopts at present is mainly pedicle screw fixes.The mode of Lumbar Fusion is more, except postero-lateral fusion, way of escape intervertebral fusion, anterior intervertebral fusion, intervertebral spinal fusion intervertebral fusion, the intertransverse process autograft fusion art outside pole in intervertebral fusion (XLIF) postero-lateral fusion is also had to be traditional amalgamation mode, but there is shortcoming [the 1] (Sun Yongsheng such as the large range of exposure of complicated operation bone grafting amount is large, Liang Chao, Wen Jianmin. Lumbar Fusion and clinical practice strategy [J/CD] thereof.China clinicist magazine: electronic edition, 2011, 5 (16): 16-21), the fixing fusion operation of Facet Joints is relatively simple, wound is relatively little, meet the requirement of biomechanics, Facet Joints is fixed fusion and has been widely used in clinical, its application process mainly can be divided into (comprising improvement Facet Joints fusion) the fixing fusion of interarticular screw of Facet Joints bone-graft fusion and zygapophysial joints fusion device to fix fusion three class Facet Joints bone-graft fusion method is clinically Facet Joints V-arrangement fluting, then autologous spongiosa bone is implanted, do not need to do large-scale stripping, wound is little, required bone grafting amount is less, vicinity gets bone, shortcoming is less stable at once, autograft easily occurs absorbing necrosis, subside and (the PatederDB such as Pateder [2] such as displacement, BenzelE.Noninstrumentedfacetfusioninpatientsundergoinglu mbarlaminectomyfordegenerativespondylolisthesis.JSurgOrt hopAdv, 2010, 19:153-158.) retrospective study 62 routine spinal columns, 1 ~ 2 degree of slippage symptoms accompanied patient's row laminectomy for decompression simple zygapophysial joints fusion, within postoperative more than 1 year, pay a return visit, preoperative stable slippage, postoperative imaging examination 64% intervertebral flexion-extension motion degree≤2mm, the wherein patients symptomatic relief of 96%, and all the other patients of 36% only 50% remission rate, the slippage patient only 52% intervertebral flexion-extension motion degree≤2mm of preoperative instability, remission is satisfied, therefore, simple articular process fusion fusion rate is lower, once after merging, the bright interarticular screw of patients symptomatic relief fixes fusion can provide initial fixing clinically, mainly use clinically at present through articular process pedicle screw and translaminar facet screw two kinds as far back as nineteen forty-four, King [3] (KingD.Internalfixationoflumbosacralfusion.JBoneJointSurg Br, 1948, screw 30A:560-565.) applying articular process interface fixes Facet Joints to provide the fusion rate of intertransverse fusion, because this screw is shorter and smaller, only pass through articular surface, the hold of screw and fixing after stability all poor, existing clinically seldom use Boucher [4] (BoucherHH.Amethodofspinalfusion.JBoneJointSurgBr, 1959, 41:248-259.) for improving fixing stability, longer screw is used to be fixed in pedicle of vertebral arch, define the model through articular process pedicle screw, interarticular screw is fixed to merge has biomechanical property [5] (the abundant canal east similar to pedicle screw system, Zheng Zugen, Cai Jianping, Deng. the Biomechanical experiment that Translaminar facet joint screw is fixing.JISUI ZAZHI AUTHOR AND, 2004, 14 (11): 676-678.), along with the application of zygapophysial joints screw technique, occur that a small amount of Fusion failure postsurgery symptoms is alleviated not obvious, screw loosening and fracture, dura mater is torn, screw be punctured to canalis spinalis cause the complication such as nerve injury it is reported zygapophysial joints screw be applied to zygapophysial joints fusion its not fusion rate reach 2% ~ 10% [6] (TsitsopoulosPP, TsonidisC, Papaioannou.Intraoperativefacetjointinjuryduringanterior cervicaldiscectomyandfusion:anexperimentalstudy.JNeurosu rgSpine.2007, 7 (4): 429-434.) Thorsten [7] (ThorstenH, DieterG, JiriD, etal.Translaminarscrewfixationofthelumbarandlumnbarsacra lspine:A5-yearfollow-up.Spine, 1998, 23 (10): 1180-1184.) screw loosening rate 3% is reported, 2 routine screw extraction Ploltz [8] (PloltzJA in 173 examples, LeeJY, KhanM.Doeslumbarfacetfluiddetectedonmagneticresonanceima gingcorrelatewithradiographicinstabilityinpatientswithde generativelumbardiseaseSpine.2007, 15, 32 (14): 1555-60.) the upper spondylolisthesis of 5 routine postoperative generation is reported, also has the report of fracture of the vertebral lamina, it is the bright grade [9] of 1% ~ 13.6% Cui Zhi (Cui Zhiming that postsurgery symptoms alleviates unconspicuous ratio, Zhang Jinbo, Bao Guofeng, Deng.The research & design of lumbar vertebra zygapophysial joint fusion cage. biological bone material and clinical research, 2009,6 (1): 53-55.) have developed a kind of lumbar vertebra zygapophysial joint fusion cage and supporting implanting instrument thereof, the material of lumbar vertebra zygapophysial joint fusion cage is cryopreserved viable artery embedded material, take from the cortical bone of adult thighbone, shape is that a cylinder body-centered embeds an ellipsoid, it is symmetrical that column part is exposed at ellipsoid two ends, wherein cylindrical end diameter D1=4mm, cylindrical high H1=8mm, ellipsoidal diameter D2=6mm, high H2=4mm, cylinder two ends exposed portion L1=2mm, its implantation joint is dashed forward in groove that intraarticular polishes in advance by L2=1mm, because zygapophysial joints contact is tight, articular process is less, this kind of fusion device implantation joint is dashed forward in groove that intraarticular polishes in advance, implant is less, lack stabilising arrangement, easily deviate from, to polish more articular process osseous tissue simultaneously, affect the intensity of zygapophysial joints, easily cause zygapophysial joints to be fractured fixes on the basis of fusion at zygapophysial joints for this reason, measure and research according to the Neo-Confucianism of the Facet Joints of compatriots, develop a kind of Facet Joints fusing device with the remission rate of the fusion rate and postsurgery symptoms that improve medium-term and long-term zygapophysial joints, eliminate simple zygapophysial joints fusion fusion rate lower, what screw was fixing loosens and fracture, reduce dura mater to tear and be punctured to canalis spinalis and cause the existing Facet Joints developed of the side effect such as nerve injury fusing device of dashing forward to be described below.
summary of the invention:
The object of the invention is to there is certain mechanical strength in order to provide a kind of and promote skeletonization good biocompatibility, along with Facet Joints merges fixing and degraded and absorbed voluntarily, do not need second operation to take out, implant and promote the osteogenic factor of osteogenesis by the upper and lower articular process of fixing lumbar vertebra and Facet Joints fixed the absorbable lumbar facet joint fusion cage of fusion
The object of the present invention is achieved like this:
Absorbable lumbar facet joint fusion cage of the present invention, is merged body has by the elasticity made containing the polymeric material of osteogenic factor be absorbed by the body and inserts insertion section between superior articular process of lumbar vertebra and lumbar vertebra inferior articular process, is positioned at superior articular process of lumbar vertebra fixed part that side, insertion section and superior articular process of lumbar vertebra coordinate away from the position of insertion section, is positioned at the lumbar vertebra inferior articular process fixed part that insertion section opposite side and lumbar vertebra inferior articular process coordinate away from the position of insertion section.
Bottom surface, body top vertically or approximately perpendicular to elasticity is merged respectively in above-mentioned insertion section, superior articular process of lumbar vertebra fixed part, and lumbar vertebra inferior articular process fixed part and elasticity merge the angle 90 ° of ﹤ α ﹤ 170 ° between bottom surface, body top.
Above-mentioned front end, insertion section is taper, and two sides, insertion section have del projection respectively, and insert easily, both sides, insertion section are del projection, can prevent from skidding off after insertion.
The above-mentioned polymeric material containing osteogenic factor be absorbed by the body be containing osteogenic factor poly--DL-latex, poly-L-lactic acid, polyglycolic acid or their copolymer.
When using of the present invention, articular surface cartilage between upper and lower for lumbar vertebra articular process need be struck off and frustrate flat, the joint space between upper and lower articular process is inserted in this fusion device insertion section, lumbar vertebra inferior articular process fixed part is fixed on lumbar vertebra inferior articular process and inner side, and superior articular process of lumbar vertebra fixed part is fixed on superior articular process and outside.Containing osteogenic factor in material, bone tissue growth can be promoted
The present invention has the following advantages:
1, there is certain mechanical strength and fixed environment is provided: prevent it from moving together by prominent the fixing of lumbar vertebra lower articular after surgery, improve the fusion rate of Facet Joints
2, good biocompatibility, the feature such as utilize the Absorbable rod of material harmless, merge fixing for lower articular, have promotion ossification, do not need to be taken out, fusion device does not affect CT and MRI inspection after inserting, be convenient to clinical follow
3, reasonable in design, utilize the feature of articular process of lumbar vertebra, because zygapophysial joints is smaller, thinner, the fixing difficulty of screw, this fusion device utilizes the elasticity of material, lower articular is dashed forward effectively be fixed as one, form flexible fastening, and avoid the stress shielding of fusion device, be conducive to the fusion of zygapophysial joints
4, structure is simple, easy and simple to handle, safety; Do not disturb intraspinal tube spinal cord and nerve root, avoid the generation of post-operative complication and do not need second operation; May be used for Wicresoft's nail pedicle fix operation
accompanying drawing illustrates:
Fig. 1 is lumbar vertebra zygapophysial joint fusion cage structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is that lumbar vertebra zygapophysial joint fusion cage of the present invention is inserted and is fixed on the schematic diagram of Facet Joints.
Fig. 5 is the A direction view of Fig. 4.
Fig. 6 is the B direction view of Fig. 5.
Fig. 7 is another structural representation of the present invention.
detailed description of the invention:
Embodiment 1:
See Fig. 1 ~ Fig. 3, the present embodiment 1 absorbable lumbar facet joint fusion cage, is merged body 1 has by the elasticity made containing the polymeric material of osteogenic factor be absorbed by the body and inserts insertion section 2 between superior articular process of lumbar vertebra and lumbar vertebra inferior articular process, is positioned at superior articular process of lumbar vertebra fixed part 3 that side, insertion section and superior articular process of lumbar vertebra coordinate away from the position of insertion section, is positioned at the lumbar vertebra inferior articular process fixed part 4 that insertion section opposite side and lumbar vertebra inferior articular process coordinate away from the position of insertion section.Bottom surface, body top 5 is merged perpendicular to elasticity respectively in insertion section, superior articular process of lumbar vertebra fixed part.Lumbar vertebra inferior articular process fixed part and elasticity merge angle α=150 ° between bottom surface, body top.
Be absorbed by the body containing the polymeric material of osteogenic factor be containing osteogenic factor poly--DL-latex, poly-L-lactic acid, polyglycolic acid or their copolymer.
Fig. 4 ~ Fig. 6 is that fusion device 6 of the present invention is inserted and is fixed on the schematic diagram of Facet Joints.In figure, sequence number 7,8 is respectively fusion device superior articular process of lumbar vertebra, inferior articular process.
Embodiment 2:
Structure see Fig. 7, the present embodiment 2 Absorbable rod joint of lumbar vertebra fusion device is basic and embodiment 1 is same.Do not exist together be front end, insertion section is taper.Two sides, insertion section there is respectively del projection 9,10.
Above-mentioned enforcement further illustrates of the present invention, but this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to above-described embodiment, and all technology realized based on foregoing all belong to the scope of the invention
Claims (2)
1. absorbable lumbar facet joint fusion cage, the elasticity be made up of the polymeric material containing osteogenic factor being absorbed by the body merges insertion section body having and inserts between superior articular process of lumbar vertebra and lumbar vertebra inferior articular process, be positioned at the superior articular process of lumbar vertebra fixed part that side, insertion section and superior articular process of lumbar vertebra coordinate away from the position of insertion section, be positioned at the lumbar vertebra inferior articular process fixed part that insertion section opposite side and lumbar vertebra inferior articular process coordinate away from the position of insertion section, insertion section, superior articular process of lumbar vertebra fixed part vertically or approximately perpendicular to elasticity merges bottom surface, body top respectively, lumbar vertebra inferior articular process fixed part and elasticity merge the angle 90 ° of ﹤ α ﹤ 170 ° between bottom surface, body top, front end, insertion section is taper, two sides, insertion section there is del projection respectively.
2. absorbable lumbar facet joint fusion cage as claimed in claim 1, it is characterized in that the polymeric material containing osteogenic factor be absorbed by the body be containing osteogenic factor poly--DL-latex, poly-L-lactic acid, polyglycolic acid or their copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062228.9A CN103126788B (en) | 2013-02-28 | 2013-02-28 | Absorbable lumbar facet joint fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062228.9A CN103126788B (en) | 2013-02-28 | 2013-02-28 | Absorbable lumbar facet joint fusion cage |
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| Publication Number | Publication Date |
|---|---|
| CN103126788A CN103126788A (en) | 2013-06-05 |
| CN103126788B true CN103126788B (en) | 2016-04-20 |
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| CN201310062228.9A Expired - Fee Related CN103126788B (en) | 2013-02-28 | 2013-02-28 | Absorbable lumbar facet joint fusion cage |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774220A (en) * | 2003-02-14 | 2006-05-17 | 德普伊斯派尔公司 | In-situ formed intervertebral fusion device and method |
| CN101444435A (en) * | 2008-12-25 | 2009-06-03 | 李开南 | Absorbable transverse process fusion apparatus |
| CN101801316A (en) * | 2007-01-31 | 2010-08-11 | 奥尔布罗斯医疗股份有限公司 | Mechanical apparatus and method for artificial disc replacement |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7377942B2 (en) * | 2003-08-06 | 2008-05-27 | Warsaw Orthopedic, Inc. | Posterior elements motion restoring device |
| US8080046B2 (en) * | 2008-04-24 | 2011-12-20 | Loubert Suddaby | Facet joint fixation device |
| WO2010040002A1 (en) * | 2008-10-01 | 2010-04-08 | Life Spine, Inc. | Spinal facet fastener |
| WO2010056895A1 (en) * | 2008-11-12 | 2010-05-20 | Stout Medical Group, L.P. | Fixation device and method |
-
2013
- 2013-02-28 CN CN201310062228.9A patent/CN103126788B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774220A (en) * | 2003-02-14 | 2006-05-17 | 德普伊斯派尔公司 | In-situ formed intervertebral fusion device and method |
| CN101801316A (en) * | 2007-01-31 | 2010-08-11 | 奥尔布罗斯医疗股份有限公司 | Mechanical apparatus and method for artificial disc replacement |
| CN101444435A (en) * | 2008-12-25 | 2009-06-03 | 李开南 | Absorbable transverse process fusion apparatus |
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| CN103126788A (en) | 2013-06-05 |
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