CN104546231A - Adaptive floating combined cervical interbody fusion cage - Google Patents
Adaptive floating combined cervical interbody fusion cage Download PDFInfo
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- CN104546231A CN104546231A CN201510039538.8A CN201510039538A CN104546231A CN 104546231 A CN104546231 A CN 104546231A CN 201510039538 A CN201510039538 A CN 201510039538A CN 104546231 A CN104546231 A CN 104546231A
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Abstract
The invention discloses an adaptive floating combined cervical interbody fusion cage comprising a cage body, a steel plate and a connection mechanism. The steel plate is connected to the connection mechanism, the cage body is movably fixed to the connection mechanism, and the cage body and the steel plate are in arc matching. The steel plate and the cage body are connected in a floating manner, the fusion cage can be adjusted according to the implant position, the adjacent cervical surfaces are fitted tightly, a screw between the steel plate and the cage body is screwed after the implantation, the incision is small, and the operation difficulty is low.
Description
Technical field
The present invention relates to a kind of Invasive lumbar fusion device, particularly relate to a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device.
Background technology
Cervical spondylotic myelopathy and cervical spondylotic radiculopathy are commonly encountered diseases, the frequently-occurring disease of mid-aged population, and along with living-pattern preservation, its sickness rate also improves year by year, and presents the trend of rejuvenation.The pathogenesis of cervical spondylosis is that the backward rear outstanding or cone trailing edge hyperosteogeny of intervertebral disc degradation forms spinal cord in hyperosteogeny compressing cervical spinal canal and nerve root, because the neurocyte in myeloid tissue is very fragile, it is irreversible that the function of nervous system that the pathological changes such as the hypoxic-ischemic caused by compressing cause loses.Therefore answer Operation in early stage to remove compressing for cervical spondylotic myelopathy, the root cervical spondylosis for serious symptom also should take positive operative treatment.Anterior cervical decompression bone graft fusion (being called for short ACDF) is the standard procedures method of current clinical treatment cervical spondylotic myelopathy and cervical spondylotic radiculopathy.Its principle is intervertebral disc, the hyperosteogeny of hypertrophy, the cone of even whole narrow segment through cervical vertebra excision, after excision causes laminated structure, support rib block or Invasive lumbar fusion device (Cage) is implanted up and down between joint, to maintain height and the Axial symptoms of intervertebral in pathological changes.
For low level cervical operation, the mode that Invasive lumbar fusion device adds Interal fixation uses more convenient.What operation in the past adopted is that single Invasive lumbar fusion device and single steel plate are fixed, and Invasive lumbar fusion device is not fixed with steel plate, and the risk having fusion device displacement and do not merge, causes operative failure.Existing another kind of Invasive lumbar fusion device, steel plate and fusion device are fixed together and use, steel plate is provided with fixing hole, fixed by fusion device by fixing hole and screw, although this kind of fixed form can limit the position of fusion device preferably, steel plate and fusion device are when mounted, not there is certain Relative Floating space between the two, cannot debug, cause ensureing that the surface of bone with neighbouring cone fits tightly, have a strong impact on operative effect.In addition, implant after Interal fixation is on fusion device again, need larger operative incision, not only operation wound is large, and operation easier is comparatively large, increases the pain of injury of patient.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, steel plate and fusion device main body adopt floating connection, can debug according to the needs of implantation position, make to fit tightly with the surface of bone of adjacent vertebral, can by the screw lock between steel plate and Invasive lumbar fusion device after inserting, operative incision is little, and operation easier is little.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, comprise fusion device main body, steel plate and bindiny mechanism, described steel plate is connected with described bindiny mechanism, described fusion device subject activity is fixed in described bindiny mechanism, and described fusion device main body and described steel plate are that cambered surface coordinates.
Further, described bindiny mechanism comprises some screws, and each screw all through the cambered surface that described steel plate and described fusion device main body match with described steel plate, is connected with described fusion device subject activity.
Further, described bindiny mechanism also comprises rotating shaft, coordinate with described fusion device body rotation in the stiff end that described rotating shaft is actively located in described fusion device main body, described some screws are fixed through the stiff end of described steel plate and described fusion device main body and described rotating shaft, and stiff end and the described steel plate of described fusion device main body are rotatably assorted.
Further, described fusion device main body is provided with the fusion hole of up/down perforation, and the stiff end left and right sides of described fusion device main body is provided with and turns hole, to turn in hole and the cambered surface of described rotating shaft matches with the described cambered surface turning hole described in described rotating shaft is actively located in; The stiff end of described fusion device main body be provided with at least one stiff end through described fusion device main body, described in turn the connecting hole in hole and described fusion hole, position corresponding with connecting hole in described rotating shaft is provided with fixing hole, described steel plate is provided with some through holes, and each screw is fixed through mutually corresponding through hole, fixing hole and connecting hole and described rotating shaft.
Further, the end face of the stiff end of described fusion device main body there is outwardly arc raised line, the medial surface of described steel plate is provided with the arc groove matched with described arc raised line, and described fusion device main body is matched by the cambered surface of the cambered surface of described arc raised line and the arc groove of described steel plate.
Further, described in turn the cross section of hole and described rotating shaft all in D font, turn the length of the arc of hole cross section described in the length of the arc of described rotating shaft cross section is greater than, the cambered surface turning hole in fusion device main body is concentric with the cambered surface of described arc raised line.
Further, the diameter of each connecting hole is greater than the diameter of screw rod on screw and is less than the diameter of nut.
Further, be equipped with hold-down screw in all the other through holes on described steel plate, some hold-down screws are used for being connected with cervical vertebra cone.
Further, the through hole described steel plate passed for the hold-down screw be connected with cervical vertebra upper cone is skew nailing hole.
Further, described fusion device main body is provided with the fusion hole of up/down perforation, the end face of the stiff end of described fusion device main body there is outwardly arc raised line, the medial surface of described steel plate is provided with the arc groove matched with described arc raised line, and described fusion device main body is matched by the cambered surface of the cambered surface of described arc raised line and the arc groove of described steel plate; The stiff end of described fusion device main body is provided with some connecting holes through described arc raised line and described fusion hole, position relative with described arc groove on the lateral surface of described steel plate is provided with some spherical grooves, described steel plate is provided with the some perforation running through described arc groove and described spherical groove, and each screw is each passed through perforation on described steel plate and corresponding connecting hole and fusion device main body and fixes.
The present invention adopts rotating shaft to be connected with screw fit, makes when mounted can relatively rotate between steel plate and fusion device main body, can debug according to the needs of implantation position, makes to fit tightly with the surface of bone of adjacent vertebral; The diameter design of connecting hole is greater than the diameter of screw, fusion device body can not be interfered when steel plate rotates in certain slewing area; Limit rotating shaft in addition and turn the shape in hole, can prevent rotating shaft from disorderly turning, screwing facilitates; During use, first implant fusion device body, then put into by steel plate fixing, avoid steel plate with fusion device is fixed together, the situation of larger otch offered by needs, decreases the pain of injury of patient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the sectional view of the embodiment of the present invention 1.
Fig. 4 is the structural representation of fusion device in the embodiment of the present invention 1.
Fig. 5 is the side view of fusion device in the embodiment of the present invention 1.
Fig. 6 is the structural representation of the embodiment of the present invention 1 light plate.
Fig. 7 is the structural representation of the embodiment of the present invention 1 shaft.
Fig. 8 is the structural representation of the embodiment of the present invention 2.
The structural representation of fusion device in Fig. 9 embodiment of the present invention 2.
Figure 10 is the structural representation of the embodiment of the present invention 2 light plate.
Figure 11 is the structural representation of the embodiment of the present invention 2 middle washer.
Detailed description of the invention
Below in conjunction with drawings and Examples, set forth the present invention further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
Embodiment 1
Please refer to shown in Fig. 1, the better embodiment of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present invention comprises: fusion device main body 1, steel plate 2 and bindiny mechanism 3, and described bindiny mechanism 3 comprises two screws 31 and rotating shaft 32.Described steel plate 2 is connected with described bindiny mechanism 3, and described fusion device main body 1 is movably fixed in described bindiny mechanism 3, described fusion device main body 1 with described steel plate 2 for cambered surface coordinates.
Please refer to shown in Fig. 2, Fig. 3 and Fig. 4, specifically, described fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, described fusion device main body 1 is divided into stiff end and movable end, the described stiff end left and right sides is provided with and turns hole 12, to turn in hole 12 and the cambered surface of described rotating shaft 32 matches with the described cambered surface turning hole 12 described in described rotating shaft 32 is actively located in.It should be noted that, the described cross section turning hole 12 and described rotating shaft 32 is all in D font, the length of the arc of hole 12 cross section is turned described in the length of the arc of described rotating shaft 32 cross section is greater than, to ensure that rotating shaft 32 can be rotated relative to turning hole 12 within the specific limits, namely the arc length of described rotating shaft 32 cross section and the described difference turning the arc length of hole 12 cross section control the amplitude that fusion device main body 1 fluctuates, also countershaft 32 has certain restriction simultaneously, can prevent rotating shaft 32 from disorderly turning, make screwing 31 convenience.
Please refer to shown in Fig. 5 and Fig. 6, the end face of the stiff end of described fusion device main body 1 there is outwardly arc raised line 13, the medial surface of described steel plate 2 is provided with the arc groove 21 matched with described arc raised line 13, and described fusion device main body 1 is matched by the cambered surface of the cambered surface of described arc raised line 13 and the arc groove 21 of described steel plate 2.Wherein, the cambered surface turning hole 12 in fusion device main body 1 is concentric with the cambered surface of described arc raised line 13, and the cambered surface turning hole 12 is namely identical with the cambered surface radian of described arc raised line 13.
Shown in Fig. 3, Fig. 4 and Fig. 7, the stiff end of described fusion device main body 1 be provided with arc raised line 13 on the stiff end of described fusion device main body 1, described in turn two connecting holes 14 in hole 12 and described fusion hole 11, position corresponding with two connecting holes 14 in described rotating shaft 32 is provided with two fixing holes 321.Described steel plate 2 is provided with some through holes 22, the fixing hole 321 that described two screws 31 are each passed through in the through hole 22 on corresponding steel plate 2, the stiff end of described fusion device main body 1 and rotating shaft 32 is fixed with described rotating shaft 32, and described two screws 31 are all positioned at described connecting hole 14.The diameter of each connecting hole 14 is greater than the diameter of screw rod on screw 31 and is less than the diameter of nut, and fusion device body can not be interfered when steel plate 2 rotates in certain slewing area.
Shown in Fig. 1, Fig. 3 and Fig. 6, be equipped with hold-down screw 311 in all the other through holes 22 on described steel plate 2, some hold-down screws 311 are for being connected with cervical vertebra cone, and each hold-down screw 311 is tapping screw.The through hole 22 that described steel plate 2 passes for the hold-down screw 311 be connected with cervical vertebra upper cone is skew nailing hole 221, described fusion device main body 1 is provided with skew nailing groove 15, during use, hold-down screw 311 penetrates and squeezes into upper vertebral body obliquely upward by skew nailing groove 15 in skew nailing hole 221.In addition, the bottom of steel plate 2 is also provided with two through holes 22, and these two through holes 22 are vertical nail, and the hold-down screw 311 installed in it squeezes into lower cone perpendicular to steel plate 2.
In fusion device main body 1 implantation process, in order to better ensure that the surface of bone of neighbouring cone fits tightly, needing to adjust the position of fusion device main body 1 to needs, then steel plate 2 and cone being developed.In debug process, arc raised line 13 on the stiff end of described fusion device main body 1 can rotate around the arc groove 21 on described steel plate 2 medial surface, to adapt to the angle of vertebral body end face and side face, now because screw 31 is through steel plate 2 and is fixed in rotating shaft 32, so described rotating shaft 32 all keeps relative motionless with described screw 31 and steel plate 2, described fusion device main body 1 also rotates around described rotating shaft 32 object arriving debugging simultaneously.It should be noted that, now be in the debug phase, screw 31 is through steel plate 2 and the threaded engagement in rotating shaft 32, not deeply to the inside of connecting hole 14, namely be not be in screw 31 by steel plate 2 and fusion device main body 1 locking state, now fusion device main body 1 has the degree of freedom rotated around steel plate 2 and rotating shaft about 32.After finally debugging correct position, tighten two screws 31, make fusion device main body 1 constant with the relative position of rotating shaft 32, corresponding steel plate 2 is also fixed with the relative position of fusion device main body 1, thus strengthens the stability of whole fusion device, improves operative effect.
Embodiment 2
Please refer to shown in Fig. 8, another embodiment of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present invention comprises: fusion device main body 1, steel plate 2 and bindiny mechanism 3, and described bindiny mechanism 3 comprises two screws 31.Described steel plate 2 is connected with described bindiny mechanism 3, and described fusion device main body 1 is movably fixed in described bindiny mechanism 3, described fusion device main body 1 with described steel plate 2 for cambered surface coordinates.
Please refer to shown in Fig. 9 and Figure 10, specifically, described fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, described fusion device main body 1 is divided into stiff end and movable end, the end face of the stiff end of described fusion device main body 1 there is outwardly arc raised line 13, the medial surface of described steel plate 2 is provided with the arc groove 21 matched with described arc raised line 13, and described fusion device main body 1 is matched by the cambered surface of the cambered surface of described arc raised line 13 and the arc groove 21 of described steel plate 2.The stiff end of described fusion device main body 1 is provided with the connecting hole 14 in two arc raised lines 13 on the stiff end of described fusion device main body 1 and described fusion hole 11.
Shown in Fig. 8 and Figure 10, position relative with described arc groove 21 on the lateral surface of described steel plate 2 is provided with two spherical grooves 23, and described steel plate 2 is provided with two perforation 24 all running through described arc groove 21 and described two spherical grooves 23.Two screws 31 are each passed through two perforation 24 on described steel plate 2 and two connecting holes 14 are fixed with fusion device main body 1, and described two screws 31 are all positioned at described connecting hole 14.Specifically, be equipped with screw thread in two connecting holes 14 in described fusion device main body 1, described two screws 31 are all fixed by screw thread and fusion device main body 1.
Please refer to shown in Fig. 8 and Figure 11, wherein, be provided with packing ring 231 in described spherical groove 23, and the shape of the shape of described packing ring 231 and described spherical groove 23 matches.The diameter of described perforation 24 is greater than the diameter of screw rod on screw 31 and is less than the diameter of nut, and fusion device body can not be interfered when steel plate 2 rotates in certain slewing area.
Shown in Fig. 8 and Figure 10, described steel plate 2 is also provided with some through holes 22, is equipped with hold-down screw 311 in the through hole 22 on described steel plate 2, some hold-down screws 311 are for being connected with cervical vertebra cone.The through hole 22 that described steel plate 2 passes for the hold-down screw 311 be connected with cervical vertebra upper cone is skew nailing hole 221, described fusion device main body 1 is provided with skew nailing groove 15, during use, hold-down screw 311 penetrates and squeezes into upper vertebral body obliquely upward by skew nailing groove 15 in skew nailing hole 221.In addition, the bottom of steel plate 2 is also provided with two through holes 22, and these two through holes 22 are vertical nail, and the hold-down screw 311 installed in it squeezes into lower cone perpendicular to steel plate 2.
In fusion device main body 1 implantation process, in order to better ensure that the surface of bone of neighbouring cone fits tightly, need to adjust the position of fusion device main body 1 to needs.During operation, first fusion device main body 1 is implanted between upper lower cone, then put into steel plate 2 from incision, avoid steel plate 2 and be fixed together with fusion device, need the situation offering larger otch, decrease the pain of injury of patient.Again packing ring 231 is put into spherical groove 23, then screw 31 is passed packing ring 231, spherical groove 23, perforation 24 and connecting hole 14 successively, and rotating screw 31, by screw 31 and the threaded engagement in connecting hole 14, make screw 31 relative with fusion device main body 1 fixing, and ensure that now nut coordinates for lax with packing ring 231, then as required, the position of adjustment fusion device main body 1, now fusion device main body 1 can utilize arc raised line 13 to coordinate with arc groove 21 to rotate around steel plate about 2, reached the object of debugging.Finally tightened by screw 31, steel plate 2 is fixing relatively to make fusion device main body 1.Now, because have additional the packing ring 231 suitable with spherical groove 23 shape, make fusion device main body 1 when rotating, the nut of screw 31 can be fitted completely with steel plate 2.
Embodiment 3
The present embodiment changes on the basis of embodiment 1, and two screws 31 are become a screw 31, and accordingly, the hole of described screw 31 process all arranges one.Other annexation is with embodiment 1.
Embodiment 4
The present embodiment changes on the basis of embodiment 2, and two screws 31 are become a screw 31, and accordingly, the hole of described screw 31 process all arranges one.Other annexation is with embodiment 2.
Above the implementation that specific embodiments is described is intended to specific descriptions of the present invention, can not be interpreted as it is limitation of the present invention, those skilled in the art under the teachings of the present invention, can make various variant on the embodiment basis described in detail, these variants all should be included within design of the present invention.The present invention's scope required for protection only will be stated by described right and limit.
Claims (10)
1. a self-adapting float combination cervical vertebra Invasive lumbar fusion device, it is characterized in that: comprise fusion device main body, steel plate and bindiny mechanism, described steel plate is connected with described bindiny mechanism, described fusion device subject activity is fixed in described bindiny mechanism, and described fusion device main body and described steel plate are that cambered surface coordinates.
2. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 1, it is characterized in that: described bindiny mechanism comprises some screws, each screw all through the cambered surface that described steel plate and described fusion device main body match with described steel plate, is connected with described fusion device subject activity.
3. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 2, it is characterized in that: described bindiny mechanism also comprises rotating shaft, coordinate with described fusion device body rotation in the stiff end that described rotating shaft is actively located in described fusion device main body, described some screws are fixed through the stiff end of described steel plate and described fusion device main body and described rotating shaft, and stiff end and the described steel plate of described fusion device main body are rotatably assorted.
4. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 3, it is characterized in that: described fusion device main body is provided with the fusion hole of up/down perforation, the stiff end left and right sides of described fusion device main body is provided with and turns hole, to turn in hole and the cambered surface of described rotating shaft matches with the described cambered surface turning hole described in described rotating shaft is actively located in; The stiff end of described fusion device main body be provided with at least one stiff end through described fusion device main body, described in turn the connecting hole in hole and described fusion hole, position corresponding with connecting hole in described rotating shaft is provided with fixing hole, described steel plate is provided with some through holes, and each screw is fixed through mutually corresponding through hole, fixing hole and connecting hole and described rotating shaft.
5. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 3, it is characterized in that: the end face of the stiff end of described fusion device main body has outwardly arc raised line, the medial surface of described steel plate is provided with the arc groove matched with described arc raised line, and described fusion device main body is matched by the cambered surface of the cambered surface of described arc raised line and the arc groove of described steel plate.
6. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 5, it is characterized in that: described in turn the cross section of hole and described rotating shaft all in D font, turn the length of the arc of hole cross section described in the length of the arc of described rotating shaft cross section is greater than, the cambered surface turning hole in fusion device main body is concentric with the cambered surface of described arc raised line.
7. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 4, is characterized in that: the diameter of each connecting hole is greater than the diameter of screw rod on screw and is less than the diameter of nut.
8. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 4, is characterized in that: be equipped with hold-down screw in all the other through holes on described steel plate, and some hold-down screws are used for being connected with cervical vertebra cone.
9. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 8, is characterized in that: the through hole that described steel plate passes for the hold-down screw be connected with cervical vertebra upper cone is skew nailing hole.
10. self-adapting float combination cervical vertebra Invasive lumbar fusion device according to claim 2, it is characterized in that: described fusion device main body is provided with the fusion hole of up/down perforation, the end face of the stiff end of described fusion device main body there is outwardly arc raised line, the medial surface of described steel plate is provided with the arc groove matched with described arc raised line, and described fusion device main body is matched by the cambered surface of the cambered surface of described arc raised line and the arc groove of described steel plate; The stiff end of described fusion device main body is provided with some connecting holes through described arc raised line and described fusion hole, position relative with described arc groove on the lateral surface of described steel plate is provided with some spherical grooves, described steel plate is provided with the some perforation running through described arc groove and described spherical groove, and each screw is each passed through perforation on described steel plate and corresponding connecting hole and fusion device main body and fixes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039538.8A CN104546231B (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039538.8A CN104546231B (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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| CN104546231A true CN104546231A (en) | 2015-04-29 |
| CN104546231B CN104546231B (en) | 2016-10-19 |
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| CN201510039538.8A Expired - Fee Related CN104546231B (en) | 2015-01-27 | 2015-01-27 | Self-adapting float combination cervical vertebra Invasive lumbar fusion device |
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| CN105342680A (en) * | 2015-10-13 | 2016-02-24 | 广州聚生生物科技有限公司 | Anterior cervical interbody steel plate cage integrated internal fixing system |
| CN106618808A (en) * | 2016-11-30 | 2017-05-10 | 四川大学华西医院 | Semi-incisura lumbar interbody fusion fixator |
| CN111588521A (en) * | 2020-05-29 | 2020-08-28 | 四川大学华西医院 | Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage |
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| CN111588521A (en) * | 2020-05-29 | 2020-08-28 | 四川大学华西医院 | Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage |
| CN111588521B (en) * | 2020-05-29 | 2023-02-03 | 四川大学华西医院 | Cervical vertebra side front approach double-cortical fixation uncinate vertebra joint fusion cage |
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| Publication number | Publication date |
|---|---|
| CN104546231B (en) | 2016-10-19 |
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