CN104970905A - Fixer with stereo grids for vertebra facet joint fusion - Google Patents
Fixer with stereo grids for vertebra facet joint fusion Download PDFInfo
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- CN104970905A CN104970905A CN201410131257.0A CN201410131257A CN104970905A CN 104970905 A CN104970905 A CN 104970905A CN 201410131257 A CN201410131257 A CN 201410131257A CN 104970905 A CN104970905 A CN 104970905A
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- facet joint
- grid body
- stereoscopic grid
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Abstract
The present invention provides a fixer with stereo grids for vertebra facet joint fusion. The fixer is integrally formed from metal powder by an additive manufacturing method and is inserted between an upper facet joint and a lower facet joint of two adjacent vertebras. The fixer comprises a first fusion side and a second fusion side, opposite to each other. The stereo grids are mounted on the first fusion side and the second fusion side. Each stereo grid is provided with a plurality of micro-holes in multi-packed shape. For the design, when the fixer is planted between the upper facet joint and the lower facet joint of two adjacent vertebras, it expands the two adjacent vertebras. Besides the improvement in the narrowed symptom of vertebras, newly born bone cells can enter the plurality of micro-holes in multi-packed shape in the stereo grids with the result of making the two adjacent vertebras fused better.
Description
Technical field
The present invention has the vertebra facet joint about a kind of tool stereoscopic grid body to merge holder, espespecially merge on face and the second fusion face in first of relative both sides, be respectively equipped with stereoscopic grid body, this stereoscopic grid body is that the most micropores being multiple-level stack shape by majority formed.
Background technology
The vertebra of human body is made up of the vertebral body of more piece, be above facet joint and lower facet joint is fulcrum between each adjacent two joint vertebral bodys, makes human body can bend forward or stretch backward when motion.But increase with the age and degenerate, the long-term impact such as faulty posture or external force, the cartilaginous tissue between two adjacent upper and lower facet joints all can be caused to carve the wearing and tearing of dying with upper and lower facet joint, and cause patient to ache uncomfortable symptom; In addition, for the patient of spinal canal stenosis, uncomfortable symptom of aching also can be caused because intraspinal nerve is oppressed.
At present in order to improve the above-mentioned malaise symptoms caused because of facet joint pathological changes, fusion can be bestowed to sufferer, this fusion is underway, can the as special in the U.S. the 7th, 776, shown in No. 090, an implantation piece is implanted, to strut the spacing between two adjacent upper facet joints and lower facet joint, to improve the focus of patient between the upper facet joint and lower facet joint of affected part focus, and newborn osseous tissue can be attached on this implantation piece, reach the object of fusion two vertebral body.
Case before this United States Patent (USP) above-mentioned, in order to be implanted in the implantation piece between two adjacent upper and lower facet joints, although be disclosed in its surface, rough surface can be formed by sintered bead or with forging type, make osseous tissue when regrowing, can than being easier to be attached between this sintered bead or on matsurface, to promote the syncretizing effect with upper and lower facet joint.But, because the external diameter of osteocyte is about 50 μm usually, when forming sintered bead with sintering processing in its surface, due to when molding, each sintered bead is arrangement in random number, rely on each other, because the diameter of each sintered bead is not identical, therefore the hole that each sintered bead is formed to each other may be less than the particle diameter of osteocyte, and form the hole of non-applicable area of new bone Growth of Cells, cause newborn osteocyte to be merely able to be attached to sintered bead that implantation piece formed or the outermost surface of matsurface, cannot enter in this implantation piece inner by mistake knot shape in packing, the effect of impact and patient's spinal fusion, and aobvious necessity having improvement.
In view of this inventor, is give research and innovation, and the vertebra facet joint disclosing illustrated tool stereoscopic grid body merges holder.
Summary of the invention
The vertebra facet joint that object of the present invention aims to provide a kind of tool stereoscopic grid body merges holder, one-body molded with metal dust lamination (additive manufacturing or 3D printing), in a blocks, in order to be implanted between the upper facet joint of two adjacent vertebral bodies and lower facet joint, it comprises: the first fusion face and the second fusion face that are positioned at relative both sides; And be located at this first fusion face and the stereoscopic grid body on this second fusion face respectively, order respectively this stereoscopic grid body contains most most micropores in multiple-level stack shape.
The vertebra facet joint of disclosed tool stereoscopic grid body merges holder, wherein merge respectively between this stereoscopic grid body of face in this first stereoscopic grid body and second merging face, form a solid core, and axially run through in this core and have a guide hole, penetrate for a wire when carrying out for Minimally Invasive Surgery.
Merge between the stereoscopic grid body in face in the described first stereoscopic grid body and second merging face, the structure that forming section is solid.
Merge on face and the second fusion face in described first, be arranged with teeth portion, separately in the acutangulate edge of edge shape on its left and right both sides.
The vertebra facet joint of disclosed tool stereoscopic grid body merges holder, contains further: a through hole, axially runs through this fusion holder, to allow that a bolt penetrates, and make the bolt head of bolt be cross-placed on the top of this through hole; Two button arms, are positioned at the relative both sides of this through hole, and respectively containing a free end; And one fills in pyramidal expansion, be equipped with a screw, to screw togather this bolt, make the maximum outside diameter of this expansion plug be greater than this and two buckle spacing between arm, after order operatively rotates this bolt, this expansion that can relatively link moves beyond the Great Wall, and forces this two to buckle arm and outwards open by this expansion plug, tightly supports between this upper and lower facet joint.
The bottom of described through hole, is provided with channel guide section, and described expansion plug is equipped with rail portion, makes the rail portion of described expansion plug sleeve in consistent manner in the channel guide section of described through hole.
Described each button arm outer rim, is respectively equipped with buckle teeth, makes the crest line of this buckle teeth in downward and outside gradually oblique shape.
First and second fusion face described is provided with most recess or perforation further, with accommodating bone meal or bone cement.
The vertebra facet joint of tool stereoscopic grid body merges holder and is provided with convergence hole further, and to be connected an instrument, this convergence hole is screw, button hole or snap groove.
The top outer rim of described each button arm, a recessed chase.
Desirable entity of the present invention, can by following explanation and appended each graphic and be able to distinct.
The invention has the advantages that:
The present invention is implanted after between the upper facet joint of two adjacent vertebral bodies and lower facet joint, except strutting two adjacent vertebral bodies, improve outside spinal stenosis, it is in each micropore of mutual stacked that newborn osteocyte can go deep into respectively this stereoscopic grid body deep-rootedly, makes adjacent two vertebral bodys can obtain good fusion.
Accompanying drawing explanation
Fig. 1 is the three-dimensional icon intention of first embodiment of the invention;
Fig. 2 is the cross-sectional view in direction shown in 2-2 in Fig. 1;
Fig. 3 is the schematic diagram that the present invention implants between upper and lower facet joint;
Fig. 4 is that area of new bone cell enters the schematic diagram grown in stereoscopic grid body;
Fig. 5 is the micropore stacked state schematic diagram that the present invention forms stereoscopic graticule compartment;
Fig. 6 is the perspective exploded view of second embodiment of the invention;
Fig. 7 is the schematic diagram after assembling embodiment illustrated in fig. 6;
Fig. 8 is the sectional perspective generalized section in Fig. 7 shown in 8-8 direction;
Fig. 9 is the cross-sectional view shown in 9-9 direction in Fig. 7;
Figure 10 is the display operation chart outwards strutting two button arms embodiment illustrated in fig. 6; And
Figure 11 is the schematic perspective view of third embodiment of the invention.
Detailed description of the invention
Refer to shown in Fig. 1 to Fig. 5, the present invention has the vertebra facet joint about a kind of tool stereoscopic grid body to merge holder 10, one-body molded with metal dust lamination (additive manufacturing or 3d printing), in a blocks, in order to be implanted between two adjacent vertebral bodies 20a, the upper facet joint 21 of 20b and lower facet joint 22, the vertebra facet joint of this tool stereoscopic grid body merges holder 10 and comprises: the first fusion face 11 and the second fusion face 12 being positioned at relative both sides, and the stereoscopic grid body 13 be located at respectively on the first fusion face 11 and the second fusion face 12, each stereoscopic grid body 13 is containing most most micropores 131 in multiple-level stack shape, the present invention is made to implant two adjacent vertebral bodies 20a, after between the upper facet joint 21 of 20b and lower facet joint 22, except strutting two adjacent vertebral bodies 20a, 20b, improve outside spinal stenosis, newborn osteocyte can as shown in Fig. 4 direction of arrow, enter each micropore 131 hypertrophy of each stereoscopic grid body 13 in mutual stacked be positioned on the first fusion face 11 and the second fusion face 12 deep-rootedly, make adjacent two vertebral body 20a, 20b can obtain good fusion.
Each micropore 131 of above-mentioned formation stereoscopic grid body 13, as shown in Figure 5, can be polygonal nest hole; Or can be circular hole, diamond hole ... etc. the nest hole of geometry or in erose hole, the present invention also will not from limit.
The vertebra facet joint of disclosed tool stereoscopic grid body merges holder, the wherein micropore 131 that formed of each stereoscopic grid body 13, make its aperture between 100 ~ 500 μm, to provide area of new bone cell to enter growth, the best is 150 μm, 200 μm and 250 μm; The vertebra facet joint of tool stereoscopic grid body disclosed in addition merges holder 10, merging face 11 and second in first merges on face 12, be provided with most recess or perforation 10b further, put as bone meal (BMP to allow, the mixture of Bone MorphogeneticProtein, apatite hydroxide and tricalcium phosphate) or bone cement etc., with induce inostosis or make the present invention fastening, then in implantation place.
As shown in Figure 1, the vertebra facet joint of disclosed tool stereoscopic grid body merges holder, is provided with convergence hole 10a further, for linking one instrument T, carries out the operation of implant into body.Above-mentioned convergence hole 10a can be screw, button hole or snap groove, and the present invention is not from limit.
As shown in Figure 1, 2, the vertebra facet joint of disclosed tool stereoscopic grid body merges holder, the stereoscopic grid body 13 and second wherein merging face 11 in first merges between the stereoscopic grid body 13 in face 12, form a solid core 14, and axially can run through in this solid core 14 and have a guide hole 141, penetrate for a wire when carrying out for Minimally Invasive Surgery.Or as shown in figure 11, the stereoscopic grid body 13 and second wherein merging face 11 in first merges between the stereoscopic grid body 13 in face 12, and the structure 14 ' that forming section is solid, the structure 14 ' of this part-solid can refer to the structure be made up of most beam.
The vertebra facet joint of disclosed tool stereoscopic grid body merges holder, slightly in a cuboid, merging face 11 and second in first merges on face 12, be arranged with teeth portion 15, and the acutangulate edge 16 of edge shape in its left and right both sides, the present invention can be implanted smoothly and be tightly embedded between two adjacent upper and lower facet joints.
As shown in Fig. 6 to Figure 10, the second embodiment of the present invention, the vertebra facet joint of this tool stereoscopic grid body merges holder, comprises: the first fusion face 11 and the second fusion face 12 being positioned at relative both sides; Be arranged at the stereoscopic grid body 13 in first and second fusion face 11,12 respectively, most micropores 131 that each stereoscopic grid body 13 is multiple-level stack by majority formed; One through hole 17, axially runs through and merges holder 10, to allow that a bolt 30 penetrates, and make the bolt head 31 of bolt be cross-placed on the top of through hole 17; Two button arms 18, are positioned at the relative both sides of through hole 17, and respectively containing a free end 181; And one is pyramidal expansion plug 40, be equipped with a screw 41, to screw togather bolt 30, the maximum outside diameter of order expansion plug 40 is greater than two and buckles spacing between arm 18, make operatively after swivel bolt 30, as shown in the U direction of Figure 10, interlock expansion plug 40 can move, and force two to buckle arm 18 to open towards P direction respectively to outer, tightly to support between upper and lower facet joint 21,22 by expansion plug 40.
As shown in Fig. 8 and Figure 10, wherein, in the top outer rim of each button arm 18, a recessed chase 183, forms a stress raiser, make each button arm 18 can be expansion plug 40 outwards pushing tow time, can be successfully outwards partially dynamic according to chase 183.
As shown in Figure 9, the bottom of above-mentioned through hole 17, is provided with channel guide section 171, and expands plug 40 and be equipped with rail portion 42, and the rail portion 42 of order expansion plug 40 sleeves in the channel guide section 171 of through hole 17 in consistent manner, with along channel guide section 171 linearly slippage.
As shown in Figures 7 and 8, disclosed each button arm 18 outer rim, be respectively equipped with buckle teeth 182, make the crest line 182a of buckle teeth 182 in downward and outside gradually oblique shape, the present invention is made to implant between two joints, adjacent above and below 21,22, and order about after expansion plug 40 to buckle arm 18 buckle teeth crest line 182a by two is forced into two upper and lower facet joints 21,22 by swivel bolt 30, just as a cone wedge, tightly be embedded between upper and lower facet joint 21,22, the present invention outwards cannot be skidded off again, and be firmly implanted between two adjacent upper and lower facet joints 21,22.
Due in the second disclosed embodiment, wherein mobile towards fusion holder 10 inside with the expansion plug 40 that links by swivel bolt 30, both sides are detained the structure that arm 18 outwards struts, strutting the operating process of button arm 18, bolt 30 can't be caused to rise or decline, namely the end positions of bolt 30 can not change, and therefore can not hinder the motion of osseous tissue; In addition, in the second disclosed embodiment, by metal dust lamination (additive manufacturing or 3D Printing) integrated fusion holder, its main body does not directly screw togather bolt 30, therefore bolt 30 packing expansion plug 40 outwards support two buckle arm 18 time, not easily cause and merge bursting apart or the situation of sliding tooth of holder 10 main body, and the novelty of aobvious this embodiment of the present invention and progressive.
Disclosed shape, structure, can be modified and be applied under not disobeying spirit of the present invention and category, and the present invention also will not from limit.
The above know-why being preferred embodiment of the present invention and using; for a person skilled in the art; when not deviating from the spirit and scope of the present invention; any based on apparent changes such as the equivalent transformation on technical solution of the present invention basis, simple replacements, all belong within scope.
Claims (10)
1. have stereoscopic grid body vertebra facet joint merge holder, be one-body molded with metal dust lamination, in a blocks, in order to be implanted between the upper facet joint of two adjacent vertebral bodies and lower facet joint, to it is characterized in that, comprise:
Be positioned at the first fusion face and the second fusion face of relative both sides; And
Be located at this first fusion face and the stereoscopic grid body on the second fusion face respectively, respectively this stereoscopic grid body contains most most micropores in multiple-level stack shape, and makes the aperture of respectively this micropore between 100 ~ 500 μm.
2. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, it is characterized in that, merging the stereoscopic grid body and second in face in described first merges between the stereoscopic grid body in face, the core that formation one is solid, and this core axially runs through and has a guide hole.
3. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, it is characterized in that, merges between the stereoscopic grid body in face, the structure that forming section is solid in the described first stereoscopic grid body and second merging face.
4. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, it is characterized in that, merges on face and the second fusion face, be arranged with teeth portion, separately in the acutangulate edge of edge shape on its left and right both sides in described first.
5. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, it is characterized in that, contain further: a through hole, axially run through this fusion holder, to allow that a bolt penetrates, and the bolt head of bolt is made to be cross-placed on the top of this through hole; Two button arms, are positioned at the relative both sides of this through hole, and respectively containing a free end; And one fills in pyramidal expansion, is equipped with a screw, screws togather this bolt, make the maximum outside diameter of this expansion plug be greater than this and two buckle spacing between arm.
6. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 5 merges holder, it is characterized in that, the bottom of described through hole, is provided with channel guide section, and described expansion plug is equipped with rail portion, the rail portion of described expansion plug is made to sleeve in consistent manner in the channel guide section of described through hole.
7. the vertebra facet joint of tool stereoscopic grid body merges holder as claimed in claim 5, and it is characterized in that, described each button arm outer rim, is respectively equipped with buckle teeth, makes the crest line of this buckle teeth in downward and outside gradually oblique shape.
8. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, it is characterized in that, first and second fusion face described is provided with most recess or perforation further, with accommodating bone meal or bone cement.
9. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 1 merges holder, and it is characterized in that, be provided with convergence hole further, to be connected an instrument, this convergence hole is screw, button hole or snap groove.
10. the vertebra facet joint of tool stereoscopic grid body as claimed in claim 5 merges holder, it is characterized in that, the top outer rim of described each button arm, a recessed chase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131257.0A CN104970905B (en) | 2014-04-02 | 2014-04-02 | Has the vertebra facet joint fusion fixator of stereoscopic grid body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131257.0A CN104970905B (en) | 2014-04-02 | 2014-04-02 | Has the vertebra facet joint fusion fixator of stereoscopic grid body |
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| Publication Number | Publication Date |
|---|---|
| CN104970905A true CN104970905A (en) | 2015-10-14 |
| CN104970905B CN104970905B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410131257.0A Active CN104970905B (en) | 2014-04-02 | 2014-04-02 | Has the vertebra facet joint fusion fixator of stereoscopic grid body |
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| CN (1) | CN104970905B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110353862A (en) * | 2019-07-22 | 2019-10-22 | 上海锐植医疗器械有限公司 | A kind of Invasive lumbar fusion device |
| CN111465370A (en) * | 2017-12-06 | 2020-07-28 | Zygofix有限公司 | Facet distraction and fusion prosthesis |
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| CN2722846Y (en) * | 2004-08-11 | 2005-09-07 | 赵杰 | Lumber vertebrae back path oblique implanting pyramidal gas fusion device |
| DE202005009273U1 (en) * | 2005-06-09 | 2005-10-20 | Ohst Medizintechnik Ag | Intervertebral implant comprises a kidney-shaped body with through-holes and profiled spherical or conical upper and lower surfaces with conical portions |
| CN1713866A (en) * | 2002-12-17 | 2005-12-28 | 马斯医药技术股份公司 | Intervertebral implant |
| CN101999950A (en) * | 2010-12-02 | 2011-04-06 | 无锡尚瑞德医疗器械有限公司 | Interbody fusion cage |
| CN203001182U (en) * | 2012-03-28 | 2013-06-19 | 北京爱康宜诚医疗器材股份有限公司 | Adjustable interbody fusion cage |
| CN203263594U (en) * | 2013-04-16 | 2013-11-06 | 创生医疗器械（中国）有限公司 | Multi-hole interbody fusion cage |
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2014
- 2014-04-02 CN CN201410131257.0A patent/CN104970905B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1713866A (en) * | 2002-12-17 | 2005-12-28 | 马斯医药技术股份公司 | Intervertebral implant |
| CN2722846Y (en) * | 2004-08-11 | 2005-09-07 | 赵杰 | Lumber vertebrae back path oblique implanting pyramidal gas fusion device |
| DE202005009273U1 (en) * | 2005-06-09 | 2005-10-20 | Ohst Medizintechnik Ag | Intervertebral implant comprises a kidney-shaped body with through-holes and profiled spherical or conical upper and lower surfaces with conical portions |
| CN101999950A (en) * | 2010-12-02 | 2011-04-06 | 无锡尚瑞德医疗器械有限公司 | Interbody fusion cage |
| CN203001182U (en) * | 2012-03-28 | 2013-06-19 | 北京爱康宜诚医疗器材股份有限公司 | Adjustable interbody fusion cage |
| CN203263594U (en) * | 2013-04-16 | 2013-11-06 | 创生医疗器械（中国）有限公司 | Multi-hole interbody fusion cage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111465370A (en) * | 2017-12-06 | 2020-07-28 | Zygofix有限公司 | Facet distraction and fusion prosthesis |
| CN110353862A (en) * | 2019-07-22 | 2019-10-22 | 上海锐植医疗器械有限公司 | A kind of Invasive lumbar fusion device |
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| CN104970905B (en) | 2018-02-23 |
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