Self-adapting float combination cervical vertebra Invasive lumbar fusion deviceTechnical field
The present invention relates to a kind of Invasive lumbar fusion device, particularly relate to a kind of self-adapting float combination cervical vertebraInvasive lumbar fusion device.
Background technology
Cervical spondylotic myelopathy and cervical spondylotic radiculopathy are the commonly encountered diseases of mid-aged population, frequently-occurring disease,Along with living-pattern preservation, its sickness rate improves the most year by year, and presents the trend of rejuvenation.The pathogenesis of cervical spondylosis is that intervertebral disc degradation is backward to be highlighted or cone trailing edge hyperosteogeny shape afterwardsBecome the spinal cord in hyperosteogeny compressing cervical spinal canal and nerve root, due to the neurocyte in myeloid tissue veryFragility, the function of nervous system that the pathological change such as the hypoxic-ischemic caused by compressing causes loses irreversibleTurn.Therefore Operation in early stage is answered to release compressing, for serious symptom for cervical spondylotic myelopathyRoot cervical spondylosis also should take positive operative treatment.Anterior cervical decompression bone graft fusion (is called for shortACDF) it is current clinical treatment cervical spondylotic myelopathy and the standard procedures of cervical spondylotic radiculopathyMethod.Its principle is the intervertebral disc through cervical vertebra excision, the hyperosteogeny of hypertrophy, the most whole narrowThe cone of sections, after excision causes laminated structure, implants between the joint up and down of pathological changes and supports bone piece or vertebraBetween fusion device (Cage), to maintain height and the Axial symptoms of intervertebral.
For low level cervical operation, Invasive lumbar fusion device adds the mode of Interal fixation and uses more convenient.Conventional operation uses single Invasive lumbar fusion device and single steel plate is fixed, and intervertebral meltsClutch is not fixed with steel plate, has fusion device displacement and the risk not merged, causes operationFailure.Existing another kind of Invasive lumbar fusion device, be fixed together use by steel plate and fusion device, steel plateIt is provided with fixing hole, by fixing hole and screw, fusion device is fixed, although this kind of fixed form energyEnough positions preferably limiting fusion device, but steel plate is with fusion device when mounted, the most notThere is certain Relative Floating space, it is impossible to debugging, cause it cannot be guaranteed that with the bone of neighbouring coneFace fits tightly, and has a strong impact on operative effect.It addition, by Interal fixation on fusion device after againImplanting, need bigger operative incision, not only operation wound is big, and operation easier is relatively big,Increase the pain of injury of patient.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of self-adapting float combination cervical vertebra intervertebralFusion device, steel plate uses floating connection with fusion device main body, can carry out according to the needs of implantation positionDebugging so that fit tightly with the surface of bone of adjacent vertebral, can be by steel plate and intervertebral fusion after insertingScrew lock between device, operative incision is little, and operation easier is little.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide one certainlyAdapt to floating combination cervical vertebra Invasive lumbar fusion device, including fusion device main body, steel plate and bindiny mechanism, instituteStating steel plate to be connected with described bindiny mechanism, described fusion device subject activity is fixed on described bindiny mechanismOn, described fusion device main body is that cambered surface coordinates with described steel plate；Described bindiny mechanism include rotating shaft andSome screws, described fusion device main body is provided with the fusion hole of up/down perforation, described fusion device main bodyThe fixing end left and right sides be provided with and turn hole, described rotating shaft be actively located in described in turn hole in and described turnThe cambered surface of axle matches with the described cambered surface turning hole, described in turn the cross section of hole and described rotating shaft all inD font, the length of the arc of described rotating shaft cross section be more than described in turn the length of arc of hole cross sectionDegree, the cambered surface turning hole in fusion device main body is concentric with the cambered surface of described arc raised line；Described fusionThe fixing end of device main body be provided with at least one through described fusion device main body fixing end, described in turn holeAnd the connecting hole in described fusion hole, position corresponding with connecting hole in described rotating shaft is provided with fixingHole, described steel plate is provided with some through holes, and each screw is through the most corresponding through hole, fixing holeAnd connecting hole fixes with described rotating shaft, the diameter of each connecting hole more than on screw screw rod diameter andLess than the diameter of nut, on the end face of the fixing end of described fusion device main body outwardly convex go out arcRaised line, the medial surface of described steel plate is provided with the arc groove matched with described arc raised line, instituteState the cambered surface of the arc groove of the fusion device main body cambered surface by described arc raised line and described steel plateMatch.
Further, fixing screw, some fixing spiral shells it are equipped with in remaining through hole on described steel plateNail is for being connected with cervical vertebra cone.
Further, it is logical that the fixing screw described steel plate being used for being connected with cervical vertebra upper cone passesHole is skew nailing hole.
Further, described fusion device main body is provided with the fusion hole of up/down perforation, described fusion deviceOn the end face of the fixing end of main body outwardly convex go out arc raised line, the medial surface of described steel plate setsHaving the arc groove matched with described arc raised line, described fusion device main body is convex by described arcThe cambered surface of the cambered surface of bar and the arc groove of described steel plate matches；Fixing of described fusion device main bodyEnd is provided with some through described arc raised line and the connecting hole in described fusion hole, outside described steel platePosition relative with described arc groove on side is provided with some spherical grooves, and described steel plate is provided with and passes throughWearing some perforation of described arc groove and described spherical groove, each screw is each passed through described steel plateOn perforation and corresponding connecting hole fix with fusion device main body.
The present invention uses rotating shaft to be connected with screw fit, makes steel plate and fusion device main body when mountedBetween can relatively rotate, can debug according to the needs of implantation position so that with adjacent vertebralSurface of bone fit tightly；The diameter design of connecting hole is more than the diameter of screw so that fusion device is originallyBody will not interfere with when steel plate rotates in certain slewing area；Additionally limit rotating shaft and turn holeShape, can prevent rotating shaft from disorderly turning, screwing is convenient；During use, first implant fusion device body,Again steel plate is put into fixing, it is to avoid steel plate is fixed together with fusion device, need to offer to cut more greatlyThe situation of mouth, 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 the accompanying drawings and embodiment, the present invention is expanded on further.In the following detailed description,By the way of explanation, only describe some one exemplary embodiment of the present invention.Undoubtedly, abilityThe those of ordinary skill in territory will be consequently realised that, in situation without departing from the spirit and scope of the present inventionUnder, by various different modes, described embodiment can be modified.Therefore, accompanying drawing andDescribe the most illustrative rather than be used for limiting scope of the claims.
Embodiment 1
Refer to shown in Fig. 1, the preferable reality of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present inventionThe mode of executing includes: fusion device main body 1, steel plate 2 and bindiny mechanism 3, and described bindiny mechanism 3 wrapsInclude two screws 31 and rotating shaft 32.Described steel plate 2 is connected with described bindiny mechanism 3, described in meltClutch main body 1 is movably fixed in described bindiny mechanism 3, described fusion device main body 1 and described steelPlate 2 coordinates for cambered surface.
Refer to shown in Fig. 2, Fig. 3 and Fig. 4, specifically, described fusion device main body 1 setsThe fusion hole 11 of up/down perforation, described fusion device main body 1 is had to be divided into fixing end and movable end, describedThe fixing end left and right sides is provided with and turns hole 12, described rotating shaft 32 be actively located in described in turn hole 12 in andThe cambered surface of described rotating shaft 32 matches with the described cambered surface turning hole 12.It should be noted that it is describedTurn the cross section of hole 12 and described rotating shaft 32 all in D font, the arc of described rotating shaft 32 cross sectionThe length of shape turns the length of arc of hole 12 cross section, to ensure that rotating shaft 32 is necessarily described in being more thanIn the range of can rotate relative to turning hole 12, the arc length of the most described rotating shaft 32 cross section with described turnThe difference of the arc length of hole 12 cross section controls the amplitude that fusion device main body 1 fluctuates, withTime also countershaft 32 there is certain restriction, can prevent rotating shaft 32 from disorderly turning so that screwing 31Convenient.
Refer to shown in Fig. 5 and Fig. 6, oriented on the end face of the fixing end of described fusion device main body 1The arc raised line 13 of outer protrusion, the medial surface of described steel plate 2 is provided with and described arc raised line 13The arc groove 21 matched, described fusion device main body 1 is by the cambered surface of described arc raised line 13Match with the cambered surface of the arc groove 21 of described steel plate 2.Wherein, in fusion device main body 1The cambered surface turning hole 12 is concentric with the cambered surface of described arc raised line 13, i.e. described in turn the cambered surface in hole 12Identical with the cambered surface radian of described arc raised line 13.
Please continue to refer to shown in Fig. 3, Fig. 4 and Fig. 7, the fixing end of described fusion device main body 1 setsHave the arc raised line 13 on the fixing end of described fusion device main body 1, described in turn hole 12 andTwo connecting holes 14 in described fusion hole 11 are relative with two connecting holes 14 in described rotating shaft 32The position answered is provided with two fixing holes 321.Described steel plate 2 is provided with some through holes 22, and described twoRoot screw 31 is each passed through the through hole 22 on corresponding steel plate 2, described fusion device main body 1Fixing hole 321 on fixing end and rotating shaft 32 is fixed with described rotating shaft 32, described two screws31 are respectively positioned in described connecting hole 14.The diameter of each connecting hole 14 is more than screw rod on screw 31Diameter and less than the diameter of nut so that fusion device body when steel plate 2 rotates certainWill not interfere with in slewing area.
Please continue to refer to shown in Fig. 1, Fig. 3 and Fig. 6, in remaining through hole 22 on described steel plate 2Being equipped with fixing screw 311, some fixing screws 311 are used for being connected with cervical vertebra cone, Mei YiguDetermine screw 311 and be tapping screw.For fixing of being connected with cervical vertebra upper cone on described steel plate 2The through hole 22 that screw 311 passes is skew nailing hole 221, and described fusion device main body 1 is provided with skew nailing groove15, during use, fixing screw 311 penetrates in skew nailing hole 221 and passes through skew nailing groove 15 to tiltedlyVertebral body is squeezed in top.It addition, the bottom of steel plate 2 is additionally provided with two through holes 22, these two through holes22 is vertical nail, and the fixing screw 311 installed in it is perpendicular to steel plate 2 and squeezes into lower cone.
In fusion device main body 1 implantation process, in order to preferably ensure the surface of bone of neighbouring coneFit tightly, need the position adjusting fusion device main body 1 to needs, then by steel plate 2 and coneDevelop.During debugging, the arc raised line 13 on the fixing end of described fusion device main body 1 canTo rotate around the arc groove 21 on described steel plate 2 medial surface, to adapt to vertebral body end face and weekThe angle in face, now because screw 31 is fixed in rotating shaft 32 through steel plate 2, so instituteState rotating shaft 32 and all keep relative motionless with described screw 31 and steel plate 2, described fusion device main body 1Also rotate the purpose arriving debugging around described rotating shaft 32 simultaneously.It should be noted that nowBeing in the debugging stage, screw 31 is through steel plate 2 and the threaded engagement in rotating shaft 32, the most deeplyEnter the inside to connecting hole 14, be i.e. not in screw 31 and steel plate 2 is locked with fusion device main body 1Tight state, now fusion device main body 1 has the degree of freedom rotated upwardly and downwardly around steel plate 2 and rotating shaft 32.After finally debugging correct position, tighten two screws 31 so that fusion device main body 1 and rotating shaftThe relative invariant position of 32, corresponding steel plate 2 also fixes with the relative position of fusion device main body 1,Thus strengthen the stability of whole fusion device, improve operative effect.
Embodiment 2
Refer to shown in Fig. 8, another of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present invention is realThe mode of executing includes: fusion device main body 1, steel plate 2 and bindiny mechanism 3, and described bindiny mechanism 3 wrapsInclude two screws 31.Described steel plate 2 is connected with described bindiny mechanism 3, described fusion device main body 1Being movably fixed in described bindiny mechanism 3, described fusion device main body 1 is cambered surface with described steel plate 2Coordinate.
Refer to shown in Fig. 9 and Figure 10, specifically, described fusion device main body 1 is provided withUnder through fusion hole 11, described fusion device main body 1 is divided into fixing end and movable end, described fusionOn the end face of the fixing end of device main body 1 outwardly convex go out arc raised line 13, described steel plate 2 interiorSide is provided with the arc groove 21 matched with described arc raised line 13, described fusion device main body1 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 2Close.The fixing end of described fusion device main body 1 is provided with two fixing through described fusion device main body 1Arc raised line 13 on end and the connecting hole 14 in described fusion hole 11.
Please continue to refer to shown in Fig. 8 and Figure 10, with described arc on the lateral surface of described steel plate 2The position that groove 21 is relative is provided with two spherical grooves 23, and described steel plate 2 is provided with and all runs through describedArc groove 21 and two perforation 24 of said two spherical groove 23.Two screws 31 are worn respectivelyCross two perforation 24 on described steel plate 2 and two connecting holes 14 fixed with fusion device main body 1,Described two screws 31 are respectively positioned in described connecting hole 14.Specifically, described fusion device main bodyBe equipped with screw thread in two connecting holes 14 on 1, described two screws 31 all by screw thread with meltClutch main body 1 is fixed.
Refer to shown in Fig. 8 and Figure 11, wherein, in described spherical groove 23, be provided with packing ring 231,And the described shape of packing ring 231 matches with the shape of described spherical groove 23.Described perforation 24Diameter is more than the diameter of screw rod on screw 31 and is less than the diameter of nut so that fusion device body phaseWill not interfere with in certain slewing area when steel plate 2 is rotated.
Please continue to refer to shown in Fig. 8 and Figure 10, described steel plate 2 is additionally provided with some through holes 22,Being equipped with fixing screw 311 in through hole 22 on described steel plate 2, some fixing screws 311 are used forIt is connected with cervical vertebra cone.For the fixing screw 311 being connected with cervical vertebra upper cone on described steel plate 2The through hole 22 passed is skew nailing hole 221, and described fusion device main body 1 is provided with skew nailing groove 15, makesUsed time, fixing screw 311 penetrates in skew nailing hole 221 and passes through skew nailing groove 15 to be beaten obliquely upwardEnter upper vertebral body.It addition, the bottom of steel plate 2 is additionally provided with two through holes 22, these two through holes 22 areVertical nail, the fixing screw 311 installed in it is perpendicular to steel plate 2 and squeezes into lower cone.
In fusion device main body 1 implantation process, in order to preferably ensure the surface of bone of neighbouring coneFit tightly, need to adjust fusion device main body 1 to the position needed.During operation, first by fusion deviceMain body 1 is implanted between upper lower cone, then puts into steel plate 2 from incision, it is to avoid steel plate 2 withFusion device is fixed together, and needs to offer the situation of bigger otch, decreases the pain of injury of patient.AgainPacking ring 231 is put into spherical groove 23, then screw 31 is sequentially passed through packing ring 231, sphericalGroove 23, perforation 24 and connecting hole 14, and rotate screw 31, by screw 31 and connecting hole 14Interior threaded engagement so that screw 31 is relatively fixed with fusion device main body 1, and ensures now spiral shellCap coordinates for lax with packing ring 231, the most as required, adjusts the position of fusion device main body 1,Now fusion device main body 1 may utilize arc raised line 13 and coordinates around steel plate about 2 with arc groove 21Rotate, reached the purpose of debugging.Finally screw 31 is tightened so that fusion device main body 1 phaseSteel plate 2 is fixed.Now, because having additional the packing ring 231 suitable with spherical groove 23 shape,Making 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 is changed on the basis of embodiment 1, and two screws 31 are become oneScrew 31, accordingly, the hole of described screw 31 process is respectively provided with one.Other annexation is sameEmbodiment 1.
Embodiment 4
The present embodiment is changed on the basis of embodiment 2, and two screws 31 are become oneScrew 31, accordingly, the hole of described screw 31 process is respectively provided with one.Other annexation is sameEmbodiment 2.
Specific descriptions to the present invention are intended to illustrate the implementation of specific embodiments above, noIt is understood that those skilled in the art are under the teachings of the present invention, permissible in order to be limitation of the present inventionMaking various variant on the basis of the embodiment described in detail, these variants should be included in the present invention'sWithin design.Scope of the present invention only to be stated by described right and limit.