CN105232190A - Assembled lumbar interbody fusion cage - Google Patents
Assembled lumbar interbody fusion cage Download PDFInfo
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- CN105232190A CN105232190A CN201510689761.7A CN201510689761A CN105232190A CN 105232190 A CN105232190 A CN 105232190A CN 201510689761 A CN201510689761 A CN 201510689761A CN 105232190 A CN105232190 A CN 105232190A
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- fusion device
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- invasive lumbar
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- lumbar fusion
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Abstract
The invention provides a lumbar interbody fusion cage. The lumbar interbody fusion cage comprises a main body and an imbedded block, wherein the main body comprises an upper part, a lower part and a connecting part which are integrally formed; each of the upper end surface of the upper part, as well as the lower end surface of the lower part, is provided with an inclined part which is inclined from back to front; both the upper part and the lower part are deformable members; the upper part, the lower part and the connecting part form a built-in cavity; the imbedded block is arranged at the tail end of the built-in cavity; a limiting area allowing the imbedded block to be fixed therein is arranged at the head end of the built-in cavity; the imbedded block comprises a wide part and a narrow part which are integrally formed, a first slide bar and a second slide bar are respectively arranged on two sides of the wide part; and a first chute matched with the first slide bar and a second chute matched with the second slide bar are respectively formed in the upper side and the lower side of the built-in cavity. When the lumbar interbody fusion cage is in use, the surgical techniques become convenient and simple; and as the imbedded block and the main body are pre-assembled, assembly by a doctor is not needed, and accordingly, great convenience is provided.
Description
Technical field
The present invention relates to a kind of assembly type waist Invasive lumbar fusion device.
Background technology
Lumbar degenerative de-, Segmental defect alive, the low back pain that caused by discogenic disease, traumatic lumbar spondylolisthesis, lumbar instability causes, limb motion sensory disturbance, generally all need row lumbar vertebra to fix fusion to non-operative treatment nonresponder, this technical development becomes one of basic art formula of current spinal surgery.In recent years, waist Invasive lumbar fusion device is widely used in lumbar spinal fusion.Along with the development of spinal biomechanics and the extensive use of lumbar intervertebral fusion, the development of lumbar intervertebral fusion device is rapidly, of a great variety.
Waist Invasive lumbar fusion device of the prior art, when designing, lordosis angle is fixed, wish the normal anatomy form recovering human body, the structure of most waist Invasive lumbar fusion device is for reduce setting from front to back, but spinal fusion surgery is generally adopt through hole interbody fusion or way of escape interbody fusion, be all perform the operation from the rear side approach of spinal column, Invasive lumbar fusion device is implanted from rear side.Adopt the waist Invasive lumbar fusion device of said structure often its placement can be hindered because of its head is excessive; and after placement completes, have the risk that fusion device exits, because when placement; expanded by passage, the gmatjpdumamics between fusion device and upper hypocentrum is affected.
For above-mentioned shortcoming, have also developed a kind of waist Invasive lumbar fusion device in prior art, comprise main body and implant block, this body interior is provided with the cavity matched with this main body, and this implantation block is rotatably implanted in this cavity.The waist Invasive lumbar fusion device of said structure, in art, main body is first implanted between lumbar vertebra, is then rotated into implantation block as required, according to implantation block relative to the position of main body, adjusts the distance that main body expands.
For the structure of above-mentioned prior art, there is following shortcoming: on the one hand, the waist Invasive lumbar fusion device of this structure is assembling, needs distributing installation, very inconvenient; On the other hand, the position of implanting between block and main body is difficult to accurate judgement, and operation technique difficulty is large.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, one object of the present invention is to propose one without the need to assembling in art, and operation is simple, and position judgment waist Invasive lumbar fusion device accurately.
According to a kind of waist Invasive lumbar fusion device of the present invention, comprise main body and implant block, described main body comprises integrated top, bottom and connecting portion, the upper surface on described top and the lower surface of bottom are provided with rake from back to front and described upper and lower is deformable member, described top, bottom and connecting portion form build-in cavities, described build-in cavities end is provided with implantation block, and described build-in cavities head end is provided with the spacing zone for fixing described implantation block;
Described implantation block comprises integrated wide portion and narrow portion, both sides, described wide portion are respectively arranged with the first sliding bar and the second sliding bar, and described build-in cavities the upper side and lower side is respectively arranged with the first chute and the second chute that coordinate with the first sliding bar and the second sliding bar.
According to waist Invasive lumbar fusion device of the present invention, during use, surgical technic is convenient and simple, and implantation block and main body, for pre-install, are assembled voluntarily without the need to doctor, very convenient; Main body is generally u-shaped, does not have other connecting devices, ensure that intensity, and calculated main body according to goniometer before installation or implanted the height of block, directly presumption is to spacing zone, is exactly optimal implanting position, and operation is very simple, and fast, precision is high.
In addition, according to the above embodiment of the present invention can also have following additional technical characteristic:
According to an example of the present invention, described build-in cavities highly successively decreases from back to front.
According to an example of the present invention, described main body is cardinal principle U-shaped structure.
According to an example of the present invention, the upper surface on the top of described main body and the lower surface of bottom are provided with barb structure from back to front.
According to an example of the present invention, in described connecting portion, be provided with the through hole for promoting the motion of described implantation block.
According to an example of the present invention, the shape of described spacing zone is identical with the outline of described implantation block.
According to an example of the present invention, the height of described implantation block is set to h, and the front height of described main body is set to H, and rear height is set to D, then should meet following relation, H is greater than D, h and H positive correlation.
According to an example of the present invention, form angle between described h and D and be set to α, then, and α=2*TAN[0.5x (H-h)/L].
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation according to a waist Invasive lumbar fusion device of the present invention embodiment.
Fig. 2 is the axonometric chart according to a waist Invasive lumbar fusion device of the present invention embodiment.
Fig. 3 is the scheme of installation according to a waist Invasive lumbar fusion device of the present invention embodiment.
Fig. 4 is the view one according to a waist Invasive lumbar fusion device of the present invention embodiment.
Fig. 5 is the view two according to a waist Invasive lumbar fusion device of the present invention embodiment.
Shown in figure: 1, main body, 2, implant block, 3, rake, 4, build-in cavities, 5, spacing zone, 6, wide portion, 7, narrow portion, 8, barb structure, 9, through hole.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings describe in detail according to waist Invasive lumbar fusion device of the present invention.
As illustrated in fig. 1 and 2, according to waist Invasive lumbar fusion device of the present invention, comprise main body 1 and implant block 2.
Main body 1 comprises integrated top, bottom and connecting portion, the upper surface on top and the lower surface of bottom are provided with rake 3 from back to front and upper and lower is deformable member, top, bottom and connecting portion form build-in cavities 4, build-in cavities 4 end is provided with implants block 2, and build-in cavities 4 head end is provided with the spacing zone 5 for fixing implantation block 2;
Implant block 2 and comprise integrated wide portion 6 and narrow portion 7, both sides, wide portion 6 are respectively arranged with the first sliding bar and the second sliding bar, and build-in cavities 4 the upper side and lower side is respectively arranged with the first chute and the second chute that coordinate with the first sliding bar and the second sliding bar.
As in Figure 3-5, actual use principle of the present invention is: implant block 2 and be slidably matched by the first groove of the first sliding bar and the second sliding bar and fusion device main body 1 and the second groove and carry out slide anteroposterior.Under the most original state, implant the end that block 2 is in build-in cavities 4, the structure that fusion device main body 1 is roughly low in tail end height head end, be placed between lumbar vertebra by fusion device main body 1, the barb structure 8 in fusion device main body 1 contacts with both sides lumbar vertebra.Promote to implant block 2 from the through hole 9 of the connecting portion of fusion device main body 1 with push rod, implant block 2 slowly to move forward, to the spacing zone 5 of the head end of build-in cavities 4, implant block 2 and block with spacing zone 5 is identical, namely completing operation, combines closely in the upper and lower of lumbar vertebra now and fusion device main body 1.
Build-in cavities 4 highly successively decreases from back to front.Main body 1 is cardinal principle U-shaped structure.The upper surface on the top of main body 1 and the lower surface of bottom are provided with barb structure 8 from back to front.The through hole 9 for promoting the motion of described implantation block 2 is provided with in connecting portion.The shape of spacing zone 5 is identical with the outline of described implantation block 2.
Due to individual variation, everyone lordosis angle is different, generally between 0-18 degree.Can mate with the anatomic form of patient to greatest extent to make waist Invasive lumbar fusion device, implantation block 2 is made different height h, when implanting block 2 and arriving on front side of fusion device main body 1, the height formed with fusion device main body 1 is H, and this height H must be greater than the height D on rear side of fusion device main body 1.Different h produces different H, thus forms different segmental lordosis Alpha from D.Actual product produces many models according to h, and doctor can according to preoperative x mating plate, and the fusion device using how many lordosis angle is determined in the measurement in art.
The height implanting block 2 is set to h, and the front height of described main body 1 is set to H, and rear height is set to D, then should meet following relation, H is greater than D, h and H positive correlation.Form angle between h and D and be set to α, then, and α=2*TAN[0.5x (H-h)/L].
Embodiment one:
For through hole interbody fusion:
Owing to being transforaminal approach, the placement of usual fusion device main body 1 and vertebral body axis can produce a larger angle, therefore the front end of fusion device main body 1 take design time tilt, that is, the top of this main body 1 is or/and lower front part is provided with rake 3.The object done like this makes fusion device finally reaching desirable segmental lordosis while, and upper hypocentrum produces maximum contact area, thus promote vertebral fusion.
Embodiment two:
For way of escape interbody fusion:
Owing to being Posterior approach, it is less that the placement of usual fusion device main body 1 and vertebral body axis produce the angle of, and the design that therefore front end of fusion device main body 1 is taked is milder, and that is, the top of this main body 1 is or/and lower front part is smooth arc-shaped surface.The object done so is also make fusion device main body 1 finally reaching desirable segmental lordosis while, and upper hypocentrum produces maximum contact area, thus promotes vertebral fusion.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (8)
1. a waist Invasive lumbar fusion device, comprise main body and implant block, it is characterized in that, described main body comprises integrated top, bottom and connecting portion, the upper surface on described top and the lower surface of bottom are provided with rake from back to front and described upper and lower is deformable member, described top, bottom and connecting portion form build-in cavities, and described build-in cavities end is provided with implantation block, and described build-in cavities head end is provided with the spacing zone for fixing described implantation block;
Described implantation block comprises integrated wide portion and narrow portion, both sides, described wide portion are respectively arranged with the first sliding bar and the second sliding bar, and described build-in cavities the upper side and lower side is respectively arranged with the first chute and the second chute that coordinate with the first sliding bar and the second sliding bar.
2. a kind of waist Invasive lumbar fusion device according to claim 1, it is characterized in that, described build-in cavities highly successively decreases from back to front.
3. a kind of waist Invasive lumbar fusion device according to claim 2, is characterized in that, described main body is cardinal principle U-shaped structure.
4. a kind of waist Invasive lumbar fusion device according to any one of claim 1-3, is characterized in that, the upper surface on the top of described main body and the lower surface of bottom are provided with barb structure from back to front.
5. a kind of waist Invasive lumbar fusion device according to claim 1, is characterized in that, is provided with the through hole for promoting the motion of described implantation block in described connecting portion.
6. a kind of waist Invasive lumbar fusion device according to claim 1, is characterized in that, the shape of described spacing zone is identical with the outline of described implantation block.
7. a kind of waist Invasive lumbar fusion device according to claim 1, it is characterized in that, the height of the peak of described implantation block is set to h, the height of the front end peak of described main body is set to H, rear end peak height is set to D, and the distance between described h and H is L, then should meet following relation, H is greater than D, h and H positive correlation.
8. a kind of waist Invasive lumbar fusion device according to claim 7, is characterized in that, form angle and be set to α between described h and D, then, and and α=2*TAN[0.5x (H-h)/L].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510689761.7A CN105232190A (en) | 2015-10-21 | 2015-10-21 | Assembled lumbar interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510689761.7A CN105232190A (en) | 2015-10-21 | 2015-10-21 | Assembled lumbar interbody fusion cage |
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| Publication Number | Publication Date |
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| CN105232190A true CN105232190A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510689761.7A Pending CN105232190A (en) | 2015-10-21 | 2015-10-21 | Assembled lumbar interbody fusion cage |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6129763A (en) * | 1996-09-13 | 2000-10-10 | Chauvin; Jean-Luc | Expandable osteosynthesis cage |
| US20040127994A1 (en) * | 2002-10-16 | 2004-07-01 | Erich Kast | Implant for placement between vertebrae |
| WO2006081843A1 (en) * | 2005-02-01 | 2006-08-10 | Advanced Medical Technologies Ag | Expandable implant placeable between two vertebral bodies |
| CN201861800U (en) * | 2010-11-02 | 2011-06-15 | 北京市富乐科技开发有限公司 | Adjustable expansion fusion device |
| CN103876865A (en) * | 2014-02-21 | 2014-06-25 | 吉林医药学院 | Expandable interbody fusion cage |
| CN204411031U (en) * | 2014-12-01 | 2015-06-24 | 北京市富乐科技开发有限公司 | Strut type fusion device |
| CN205586119U (en) * | 2015-10-21 | 2016-09-21 | 优适医疗科技（苏州）有限公司 | Matched stack type waist interbody fusion cage |
-
2015
- 2015-10-21 CN CN201510689761.7A patent/CN105232190A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6129763A (en) * | 1996-09-13 | 2000-10-10 | Chauvin; Jean-Luc | Expandable osteosynthesis cage |
| US20040127994A1 (en) * | 2002-10-16 | 2004-07-01 | Erich Kast | Implant for placement between vertebrae |
| WO2006081843A1 (en) * | 2005-02-01 | 2006-08-10 | Advanced Medical Technologies Ag | Expandable implant placeable between two vertebral bodies |
| CN201861800U (en) * | 2010-11-02 | 2011-06-15 | 北京市富乐科技开发有限公司 | Adjustable expansion fusion device |
| CN103876865A (en) * | 2014-02-21 | 2014-06-25 | 吉林医药学院 | Expandable interbody fusion cage |
| CN204411031U (en) * | 2014-12-01 | 2015-06-24 | 北京市富乐科技开发有限公司 | Strut type fusion device |
| CN205586119U (en) * | 2015-10-21 | 2016-09-21 | 优适医疗科技（苏州）有限公司 | Matched stack type waist interbody fusion cage |
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Address after: 215000 one or two South Building, two Jialing Road, 188 hi tech Zone, Jiangsu, Suzhou Applicant after: Excellent medical technology (Suzhou) Co., Ltd. Address before: Suzhou City, Jiangsu Province, Suzhou Industrial Park 215000 Xinghu Street No. 218 BioBAY building B2 room 209 Applicant before: SUZHOU RUIJIN MEDICAL TECHNOLOGY CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160113 |