CN205126503U - Lumbar vertebrae fuses ware - Google Patents
Lumbar vertebrae fuses ware Download PDFInfo
- Publication number
- CN205126503U CN205126503U CN201520538328.9U CN201520538328U CN205126503U CN 205126503 U CN205126503 U CN 205126503U CN 201520538328 U CN201520538328 U CN 201520538328U CN 205126503 U CN205126503 U CN 205126503U
- Authority
- CN
- China
- Prior art keywords
- side wall
- main part
- main body
- lumbar fusion
- fusion cages
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a lumbar vertebrae fuses ware, is including the main part and a plurality of being located that are the cuboid development needle in the main part, the development needle show in the main part upper surface and with the main part lower surface link up, the inside cavity of main part forms the main part inner chamber, the main part includes main part front end, main part end, main part left side wall and main part right side wall, the main part front end passes through main part left side wall, main part right side wall with the main part end -to -end connection, the upper and lower surface of main part left side wall with the upper and lower surface of main part right side wall all is equipped with a plurality of pawl grooves. It is more even that this lumbar vertebrae fuses ware has overcome stress distribution between implantation bone and integration ware, and stress shielding is little, along with the time expand, on the implantation bone can be transferred to gradually to stress, has better integration rate to combined material permeable X ray does not produce pseudo - shadow in that CT, MRI are last, can satisfy the needs of routine inspection, accords with chinese human backbone anatomical structure, is applicable to the backbone fusion.
Description
Technical field
This utility model relates to intervertebral disc implant, particularly relates to a kind of lumbar fusion cages.
Background technology
The blank of lumbar fusion cages (Cage) is initiated by Bagby, the earliest for horse cervical spinal fusion.1992, U.S. FDA have approved BAKCage for since Lumbar Fusion clinical experiment, and Cage is widely used in spinal surgery.The lumbar fusion cages of current clinical practice: be mainly metal (as titanium alloy), macromolecular material (as polyether-ether-ketone or carbon fiber reinforced polymer) etc.
Titanium alloy has excellent biocompatibility and mechanical property, can provide good support; But the elastic modelling quantity of metal material too high (as titanium alloy is about 110GPa, and Human Cortex's bone is about 3-30GPa, the elastic modelling quantity only 1-3GPa of spongy bone).The elastic modelling quantity difference of titanium alloy fusion device and vertebral cancellous bone is large, easily produces stress shielding, causes vertebral cancellous ostosis to absorb.Because fusion device-vertebral body interracial contact is limited, vertebral body bearing load ability, easily causes stress to concentrate, As time goes on postoperative, thus causing adjacent vertebral bodies osteoporosis, fusion device to sink, intervertebral height is lost, and severe patient generation lumbar fusion cages is shifted, deviates from.Fine motion between titanium alloy fusion device interface and produce micro-bits, easily causes bone to dissolve and interface loosens, and interface is loosening finally causes bone-graft fusion failure and long pain.In addition, titanium alloy fusion device can not through x-ray, and the bone cannot observed in fusion device by X-ray film merges situation; Metal long-term existence, in body, is easily corroded, and metal ion may exist potential risks.
Polyether-ether-ketone (PK) class fusion device is mainly pure PK and fibre reinforced PK.PK good biocompatibility, elastic modelling quantity is close with cortical bone, and stress shielding is less, is conducive to improving fusion rate of bone graft, and can restore intravertebral physiological bending effectively; Its outstanding advantage: be that PK fusion device light transmission is good, can pass through common X-ray, accurately clearly observes bone-graft fusion situation, and noiseless to CT or MRI, and clinical practice result is excellent.PK fusion device also may result in a series of complication: as nerve root injury, fusion device subside, intervertebral space and Neuroforamen height reduces, intervertebral does not merge.Fibre reinforced PK fusion device, carbon fiber exists may cause intraarticular infection, synovitis, lymph diffusion, and cause obvious tissue inflammatory to react, fragility is large, easily causes fusion device device to destroy.In addition, PK class lumbar fusion cages is bio-inert material, and biological activity is poor, can not merge, only play a supportive role in early days with bone formation.Easily form fibers encapsulation between material and tissue, implant risk for a long time that exist and loosen.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of biocompatibility, good mechanical performance and meet the lumbar fusion cages of Chinese visible human spinal anatomy, and it has good osteogenic, osteoconductive potential; Fusion device can maintain enough mechanical strengths; Biological activity is high; Fast biology fusion faculty, promote its rapid fusion, shorten time required for Rehabilitation.
This utility model realizes like this, a kind of lumbar fusion cages, comprise the main body in cuboid and multiple development needle be positioned in described main body, described development needle is revealed in described body upper surface and through with described body lower surface, described body interior hollow forms body lumen, described main body comprises body front end, body ends, main body left side wall and main body right side wall, described body front end is by described main body left side wall, main body right side wall is connected with described body ends, the upper and lower surface of described main body left side wall and the upper and lower surface of described main body right side wall are equipped with multiple pawl groove.
Further, the number of described pawl groove is 6-9.
Further, the length of described pawl groove and the width of described pawl groove are 1.5-3mm, and the degree of depth of described pawl groove is 0.5-0.8mm.
Further, described development needle is three, and three described development needle lay respectively on the left of described body ends, described body front end and the intersection of described main body left side wall and the intersection of described body front end and described main body right side wall.Further, described body ends is provided with a tapped through hole and two auxiliary positioning grooves, is arranged on to auxiliary positioning groove horizontal symmetry the both sides of described tapped through hole described in two.
Further, described body front end is sub warhead structure, and the surface of described body front end is arc-shaped.
Further, the width of described main body left side wall and described main body right side wall is 8-12mm, and the length of described main body left side wall and described main body right side wall is 20-32mm, and the height of described main body left side wall and described main body right side wall is 6-16mm.
Further, the material of lumbar fusion cages is apatite/PK composite, PK good biocompatibility, and elastic modelling quantity is close with cortical bone, and stress shielding is less, is conducive to improving fusion rate of bone graft, and can restore intravertebral physiological bending effectively; Its outstanding advantage: be that PK fusion device light transmission is good, can pass through common X-ray, accurately clearly observes bone-graft fusion situation, and noiseless to CT or MRI, and clinical practice result is excellent.
The beneficial effects of the utility model are: a kind of lumbar fusion cages that this utility model provides, it comprises main body in cuboid and multiple development needle be positioned in main body, development needle is revealed in body upper surface and through with body lower surface, body interior hollow forms body lumen, main body comprises body front end, body ends, main body left side wall and main body right side wall, body front end is by described main body left side wall, main body right side wall is connected with body ends, the upper and lower surface of main body left side wall and the upper and lower surface of main body right side wall are equipped with multiple pawl groove, the biocompatibility of this lumbar fusion cages, good mechanical performance, there is good osteogenic, osteoconductive potential, fusion device can maintain enough mechanical strengths, biological activity is high, fast biology fusion faculty, promote its rapid fusion, shorten time required for Rehabilitation.
In addition, lumbar fusion cages adopts apatite/PK composite to be more evenly distributed between implantable bone and fusion device by stress, and stress shielding is little; Stress can be transferred on implantable bone gradually, has better fusion rate.And along with time lengthening.And composite can X-ray thoroughly, CT, MRI does not produce artifact, can meet the needs of routine examination.
In addition, the elastic modelling quantity of apatite/PK compound lumbar fusion cages is similar to osseous tissue, stress not only can be avoided to block and bone amount is reduced, and there will not be stress to concentrate at the interface of fusion device and osseous tissue and the fusion device depression caused, intervertebral height and front convex curvature reduce, apatite/PK composite has some properties exceeding conventional biomaterials, can meet clinically to the urgent needs of high-performance lumbar fusion cages.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the overall schematic of the lumbar fusion cages that this utility model one embodiment provides.
Fig. 2 is the structural representation of its sidewall of lumbar fusion cages that this utility model one embodiment provides.
Fig. 3 is the structural representation of its body upper surface of lumbar fusion cages that this utility model one embodiment provides.
Detailed description of the invention
The technical problem solved to make this utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to this utility model.Should be appreciated that specific embodiment described herein only in order to explain this utility model, and be not used in restriction this utility model.
As Fig. 1, shown in Fig. 2 and Fig. 3, this utility model embodiment provides a kind of lumbar fusion cages, comprise the main body 1 in cuboid and multiple development needle 2 be positioned in main body 1, development needle 2 is revealed in main body 1 upper surface and through with main body 1 lower surface, main body 1 inner hollow forms body lumen, main body 1 comprises body front end 11, body ends 12, main body left side wall 13 and main body right side wall 14, body front end 11 is by main body left side wall 13, main body right side wall 14 is connected with body ends 12, the upper and lower surface of main body left side wall 13 and the upper and lower surface of main body right side wall 14 are equipped with multiple pawl groove 15, this lumbar fusion cages overcomes stress and is more evenly distributed between implantable bone and fusion device, stress shielding is little, along with time lengthening, stress can be transferred on implantable bone gradually, there is better fusion rate, and composite can X-ray thoroughly, at CT, MRI does not produce artifact, the needs of routine examination can be met, meet Chinese visible human spinal anatomy, be applicable to spinal fusion, simultaneously, by being respectively equipped with multiple pawl groove 15 in the upper and lower surface of main body left side wall 13 and the upper and lower surface of main body right side wall 14, the frictional force between lumbar fusion cages and corpus vertebrae soleplate can be increased, prevent lumbar fusion cages from skidding off from upper and lower terminal plate of vertebral body face, reach the object of fusion.
Further, the number of pawl groove 15 is 6-9, and the number of pawl groove 15 is preferably 8.
Further, the length of pawl groove 15 and the width of pawl groove 15 are 1.5-3mm, and the degree of depth of pawl groove 15 is 0.5-0.8mm, and the length of pawl groove 15 is preferably 3mm, and the width of pawl groove 15 is preferably 2mm, and the degree of depth of pawl groove 15 is preferably 0.5mm.
Further, development needle 2 is three, three development needle 2 lay respectively on the left of body ends 12, the intersection of the intersection of body front end 11 and main body left side wall 13 and body front end 11 and main body right side wall 14, by development needle, the position of assessment lumbar fusion cages can be observed from front and side by x line.
Further, body ends 12 is arranged on the both sides of tapped through hole 121 with being provided with a tapped through hole 121 and two auxiliary positioning groove 122, two auxiliary positioning groove 122 horizontal symmetry, to facilitate the installation of apparatus, and apparatus fully contacts with fusion device when implanting, uniform force.
Further, body front end 11 is sub warhead structure, and the surface of body front end 11 is arc-shaped.Main
Body front end 3 is designed for sub warhead, evenly on the whole draws in centre, and in fact body front end can be considered and be made up of four arc surfaces, upper and lower two arc surface symmetries, and radius of curvature is 3.0-5.0mm; Two the arc surface symmetries in left and right, radius of curvature is 1.8-5.0mm; Thus the surface making body front end 3 is arc-shaped, facilitate main body to implant intervertebral disc of lumbar vertebra and excision Minor articulus gap, resistance is little, is easy to squeeze into.
Further, the width of main body left side wall 13 and main body right side wall 14 is 8-12mm, and the length of main body left side wall 13 and main body right side wall 14 is 20-32mm, and the height of main body left side wall 13 and main body right side wall 14 is 6-16mm.
Further, the length of lumbar fusion cages is shorter than the sagittal plane length of corpus vertebrae, and the width of lumbar fusion cages is consistent with the sagittal plane width of corpus vertebrae, and the height of lumbar fusion cages is consistent with the disc height of described corpus vertebrae.
Preferably, the material of lumbar fusion cages is apatite/PK composite, the good biocompatibility of this lumbar fusion cages, its elastic modelling quantity and skeleton close, reduce stress shielding, promote merge; Stress is more evenly distributed between implantable bone and fusion device, and stress shielding is little; Stress can be transferred on implantable bone gradually, has better fusion rate.And along with time lengthening.And composite can X-ray thoroughly, CT, MRI do not produce artifact, can meet the needs of routine examination wherein, apatite/PK composite bone repairing material is combined closely with osseous tissue, and interface is without bone resorption, all patients can obtain Bony union in 6 months, meanwhile, nano-apatite can carry out enhancing and toughness reinforcing to PK, increases the bond strength of apatite/PK composite bone repairing material, osseous tissue interface, reduce fine motion and vertical displacement, the initial stability of implant can be guaranteed.
The lumbar fusion cages that this utility model provides, it can meet two kinds of different modus operandis, meets different patient profiles, the demand of doctor's custom:
If adopt the mode of lumbar vertebra posterior approach during an operation, semi-vertebral plate excises or after laminectomy, cuts annulus fibrosus disci intervertebralis, directly does intervertebral decompression.The length of fusion device selects 20-32mm, is put between vertebral body by fusion device.Because fusion device connects side front pillar and the newel area of vertebral body, larger contact area is had in order to make fusion device, its length is slightly shorter than the sagittal plane length of corpus vertebrae, reserve safety zone, to avoid fusion device length oversize, cause fusion device front can oppress tissue and the trunk in front, affect blood circulation, or spinal nerves can be oppressed in fusion device rear, cause cacesthenic and pain; Width is consistent with sagittal plane width; Height is consistent with disc height, respectively places a fusion device in intervertebral space both sides.
If adopt the mode of transforaminal approach on rear side of lumbar vertebra during two operations, after the facetectomy of side, cut annulus fibrosus disci intervertebralis, directly do intervertebral decompression.The length of fusion device selects 20-32mm, puts between vertebral body, make fusion device connect the larger contact area of whole vertebral body, be beneficial to fusion along horizontal direction by oblique for fusion device, and without tractive nerve root, can not excitation nerve.
The beneficial effects of the utility model are: a kind of lumbar fusion cages that this utility model provides, it comprises main body in cuboid and multiple development needle be positioned in main body, development needle is revealed in body upper surface and through with body lower surface, body interior hollow forms body lumen, main body comprises body front end, body ends, main body left side wall and main body right side wall, body front end is by described main body left side wall, main body right side wall is connected with body ends, the upper and lower surface of main body left side wall and the upper and lower surface of main body right side wall are equipped with multiple pawl groove, the biocompatibility of this lumbar fusion cages, good mechanical performance, there is good osteogenic, osteoconductive potential, fusion device can maintain enough mechanical strengths, biological activity is high, fast biology fusion faculty, promote its rapid fusion, shorten time required for Rehabilitation.
In addition, lumbar fusion cages adopts apatite/PK composite to be more evenly distributed between implantable bone and fusion device by stress, and stress shielding is little; Stress can be transferred on implantable bone gradually, has better fusion rate.And along with time lengthening.And composite can X-ray thoroughly, CT, MRI does not produce artifact, can meet the needs of routine examination.
In addition, the elastic modelling quantity of apatite/PK compound lumbar fusion cages is similar to osseous tissue, stress not only can be avoided to block and bone amount is reduced, and there will not be stress to concentrate at the interface of fusion device and osseous tissue and the fusion device depression caused, intervertebral height and front convex curvature reduce, apatite/PK composite has some properties exceeding conventional biomaterials, can meet clinically to the urgent needs of high-performance lumbar fusion cages.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a lumbar fusion cages, it is characterized in that, comprise the main body in cuboid and multiple development needle be positioned in described main body, described development needle is revealed in described body upper surface and through with described body lower surface, described body interior hollow forms body lumen, described main body comprises body front end, body ends, main body left side wall and main body right side wall, described body front end is connected with described body ends by described main body left side wall, main body right side wall, and the upper and lower surface of described main body left side wall and the upper and lower surface of described main body right side wall are equipped with multiple pawl groove.
2. lumbar fusion cages as claimed in claim 1, is characterized in that, the number of described pawl groove is 6-9.
3. lumbar fusion cages as claimed in claim 1, it is characterized in that, the length of described pawl groove and the width of described pawl groove are 1.5-3mm, and the degree of depth of described pawl groove is 0.5-0.8mm.
4. lumbar fusion cages as claimed in claim 1, it is characterized in that, described development needle is three, and three described development needle lay respectively on the left of described body ends, described body front end and the intersection of described main body left side wall and the intersection of described body front end and described main body right side wall.
5. lumbar fusion cages according to claim 1, is characterized in that, described body ends is provided with a tapped through hole and two auxiliary positioning grooves, is arranged on to auxiliary positioning groove horizontal symmetry the both sides of described tapped through hole described in two.
6. lumbar fusion cages as claimed in claim 1, it is characterized in that, described body front end is sub warhead structure, and the surface of described body front end is arc-shaped.
7. lumbar fusion cages as claimed in claim 1, it is characterized in that, the width of described main body left side wall and described main body right side wall is 8-12mm, the length of described main body left side wall and described main body right side wall is 20-32mm, and the height of described main body left side wall and described main body right side wall is 6-16mm.
8. lumbar fusion cages as claimed in claim 1, it is characterized in that, the material of described lumbar fusion cages is apatite/PK composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538328.9U CN205126503U (en) | 2015-07-23 | 2015-07-23 | Lumbar vertebrae fuses ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538328.9U CN205126503U (en) | 2015-07-23 | 2015-07-23 | Lumbar vertebrae fuses ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205126503U true CN205126503U (en) | 2016-04-06 |
Family
ID=55612331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520538328.9U Expired - Fee Related CN205126503U (en) | 2015-07-23 | 2015-07-23 | Lumbar vertebrae fuses ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205126503U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308982A (en) * | 2016-08-22 | 2017-01-11 | 浙江康慈医疗科技有限公司 | Lumbar interbody fusion cage |
| CN110114038A (en) * | 2016-12-23 | 2019-08-09 | 瑞福克斯集团公司 | For treat farsightedness, with the sclera prosthese for retention in one or more hackly surfaces in scleral tissue or other surfaces |
| CN111888056A (en) * | 2020-08-05 | 2020-11-06 | 四川大学华西医院 | Vertebral body X-shaped excision decompression vertebral body shaping intervertebral fusion fixator |
-
2015
- 2015-07-23 CN CN201520538328.9U patent/CN205126503U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308982A (en) * | 2016-08-22 | 2017-01-11 | 浙江康慈医疗科技有限公司 | Lumbar interbody fusion cage |
| CN110114038A (en) * | 2016-12-23 | 2019-08-09 | 瑞福克斯集团公司 | For treat farsightedness, with the sclera prosthese for retention in one or more hackly surfaces in scleral tissue or other surfaces |
| CN111888056A (en) * | 2020-08-05 | 2020-11-06 | 四川大学华西医院 | Vertebral body X-shaped excision decompression vertebral body shaping intervertebral fusion fixator |
| CN111888056B (en) * | 2020-08-05 | 2022-05-24 | 四川大学华西医院 | X-shaped cutting-off decompression vertebroplasty intervertebral fusion fixator for vertebral body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050177238A1 (en) | Radiolucent bone graft | |
| EP1290985A2 (en) | Intersomatic cage for posterior fusion surgery to the lumbar column and for surgery involving the insertion of a transforaminal implant | |
| Takemoto et al. | A porous bioactive titanium implant for spinal interbody fusion: an experimental study using a canine model | |
| PT2055267E (en) | Radiolucent bone graft | |
| CN103610522A (en) | Lumbar vertebra posterior approach fusion device | |
| CN203436433U (en) | Cervical fusion cage | |
| CN205126503U (en) | Lumbar vertebrae fuses ware | |
| CN109953840A (en) | Zero incisura anterior cervical interbody fusion cage of 3D printing | |
| CN107569309B (en) | Vertebral prosthesis capable of being implanted into long bone | |
| CN203953882U (en) | Biotype cervical vertebral fusion cage | |
| CN101406417A (en) | In vivo cervical vertebra fusion implant article | |
| CN107802383A (en) | Lumbar vertebrae Invasive lumbar fusion device with Bone Ingrowth micropore | |
| CN102512230B (en) | Spinal column fusion device internally lined with reinforced ribs | |
| CN103961746A (en) | Biological-type spinal interbody fusion cage | |
| CN205073074U (en) | Cervical vertebra fusion device | |
| CN209004336U (en) | A kind of cervical fusion cage | |
| CN203609549U (en) | Posterior lumbar fusion cage | |
| CN211409544U (en) | Degradable cervical vertebra fusion cage | |
| CN107669377A (en) | Cervical vertebra Invasive lumbar fusion device with Bone Ingrowth micropore | |
| CN107753157A (en) | Cervical fusion cage | |
| CN210095998U (en) | Embedded allogeneic cervical vertebra fusion bone block | |
| CN210077956U (en) | Assembled type back locking intervertebral support | |
| CN208910604U (en) | 3D printing anterior stabilization device | |
| CN103142331B (en) | Extensive region pivot Lateral mass joint fusion device | |
| CN208958415U (en) | A kind of centrum prosthese that can be implanted into long section bone |
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 |
Granted publication date: 20160406 Termination date: 20180723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |