Self-adapting float combination cervical vertebra Invasive lumbar fusion deviceTechnical field
The present invention relates to a kind of Invasive lumbar fusion device, more particularly to a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device.
Background technology
Cervical spondylotic myelopathy and nerve root cervical vertebra sickness are the common disease of mid-aged population, frequently-occurring disease, with life styleChange, its incidence of disease is also improved year by year, and shows the trend of rejuvenation.The pathogenesis of cervical spondylopathy are that cervical intervertebral disk is moved backBecome spinal cord and nerve root that backward rear prominent or cone trailing edge osteoproliferation is formed in spur compressing cervical spinal canal, due to spinal cord groupNerve cell in knitting is very fragile, and nervous function is lost irreversible caused by the pathological change such as caused hypoxic-ischemic of compressingTurn.Therefore Operation in early stage is answered to release compressing for cervical spondylotic myelopathy, the root cervical spondylopathy for serious symptom should also be adoptedTake positive operative treatment.Anterior cervical decompression bone graft fusion (abbreviation ACDF) be current clinical treatment cervical spondylotic myelopathy andThe standard procedures method of nerve root cervical vertebra sickness.Its principle is the interverbebral disc, spur of hyperplasia, even whole cut off through cervical vertebraThe cone of individual narrow segment, after excision causes laminated structure, is implanted into support bone piece or Invasive lumbar fusion device between the section up and down of lesion(Cage), maintaining the height and Axial symptoms of intervertebral.
For low level cervical operation, it is more convenient that Invasive lumbar fusion device adds the mode of Interal fixation to use.Conventional operation is adoptedIt is that single Invasive lumbar fusion device and single steel plate are fixed, Invasive lumbar fusion device is not fixed with steel plate, hasThe risk that fusion device is shifted and do not merged, causes operative failure.Existing another Invasive lumbar fusion device, steel plate is fixed with fusion deviceUse together, steel plate is provided with fixing hole, fixed fusion device by fixing hole and screw, although this kind of fixed form canThe position of fusion device is preferably limited, but does not have certain Relative Floating space between steel plate and fusion device, it is impossible to debugged, leadCause it cannot be guaranteed that be brought into close contact with the bone face of neighbouring cone, have a strong impact on operative effect.In addition, by Interal fixation in fusionAfter on device, in implantation, it is necessary to bigger operative incision, not only operation wound is big, and operation difficulty is larger, increase patientThe pain of injury.
The content of the invention
The present invention solves the technical problem of providing a kind of self-adapting float combination cervical vertebra Invasive lumbar fusion device, steel plate withFusion device main body uses floating connection, can be according to being debugged the need for implantation position so that the bone face with adjacent vertebral is tightLaminating, can be by the screw lock between steel plate and Invasive lumbar fusion device after debugging is good so that phase between steel plate and fusion device main bodyTo fixation, operative incision is small, and operation difficulty is small.
In order to solve the above technical problems, one aspect of the present invention is：A kind of self-adapting float combination is providedCervical fusion cage, including fusion device main body, steel plate, screw and spherical bindiny mechanism, the screw is through steel plate and describedSpherical bindiny mechanism is fixed in the fusion device main body, and the steel plate passes through the spherical bindiny mechanism and the fusion device masterThe fixing end of body rotates connection；The spherical fixed mechanism includes that be arranged on the fixing end of the fusion device main body first is sphericalFixator and the first spherical groove being engaged with the described first spherical fixator is arranged on the medial surface of the steel plate, it is describedThe position relative with first spherical groove is provided with the second spherical groove on the lateral surface of steel plate, and the steel plate is provided with through describedThe first through hole of the first spherical groove and second spherical groove, the screw is through the first through hole and described first spherical solidDetermine device to be fixed with the fusion device main body.
Further, the spherical fixed mechanism includes the second spherical fixator being arranged on the medial surface of the steel plateAnd it is arranged on the 3rd spherical groove that the fixing end of the fusion device main body is engaged with the described second spherical fixator.
Further, to be provided with the 4th spherical for position relative with the described second spherical fixator on the lateral surface of the steel plateGroove, the steel plate is provided with the second through hole through the 4th spherical groove and the second spherical fixator, the fusion deviceThe fixing end of main body is provided with the connecting hole through the 3rd spherical groove, and the screw passes through second through hole and the connectionHole is fixed with the fusion device main body.
Further, it is equipped with packing ring in second spherical groove and the 4th spherical groove.
Further, the shape of the packing ring respectively with second spherical groove and the shape kissing of the 4th spherical grooveClose.
Further, the diameter of the first through hole and second through hole is all higher than on screw the diameter of screw rod and is less thanThe diameter of nut.
Further, the steel plate is provided with some fixing holes, and fixing screws, some fixations are equipped with each fixing holeScrew is used to be connected with cervical vertebra cone.
Further, the fixing hole that fixing screws are passed through for being used to be connected with cervical vertebra upper cone on the steel plate is skew nailingHole.
With fusion device be connected steel plate using sphere and attachment screw is fixed by the present invention so that steel plate and fusion device main body itBetween install it is fixed before can relatively rotate, can be according to being debugged the need for implantation position so that the bone face with adjacent vertebralIt is brought into close contact；By the first spherical groove and the relative setting of fitting of the second spherical groove, enabling adapt to what each orientation rotational band was comeError；The diameter of through hole is set into the diameter more than screw rod on screw so that fusion device body relative to steel plate rotate when certainSlewing area in will not interfere with；Set up the packing ring being adapted with the second spherical groove shape so that screw follows fusion device main bodyDuring rotation, packing ring can be slided in spherical groove so as to adapt to the direction of screw, ensure that nut, packing ring and the steel plate of screwThree is in fit-state.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment 1 of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural representation of fusion device body in the embodiment of the present invention 1.
Fig. 4 is the structural representation of the light plate of the embodiment of the present invention 1.
Fig. 5 is the structural representation of the light plate of the embodiment of the present invention 1.
Fig. 6 is the structural representation of the middle washer of the embodiment of the present invention 1.
Fig. 7 is the structural representation of the embodiment of the present invention 2.
Fig. 8 is the structural representation of fusion device body in the embodiment of the present invention 2.
Fig. 9 is the structural representation of the light plate of the embodiment of the present invention 2.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only by explanationMode describes some one exemplary embodiments of the invention.Undoubtedly, one of ordinary skill in the art will recognize,In the case of without departing from the spirit and scope of the present invention, described embodiment can be repaiied with a variety of modesJust.Therefore, accompanying drawing and description are inherently illustrative, are not intended to limit the scope of the claims.
Embodiment 1
Refer to shown in Fig. 1 and Fig. 2, the better embodiment bag of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present inventionInclude：Fusion device main body 1, steel plate 2, screw 3 and spherical bindiny mechanism 4, the screw 3 pass through steel plate 2 and the spherical connection machineStructure 4 is fixed in the fusion device main body 1, and the steel plate 2 is by the spherical bindiny mechanism 4 and the fusion device main body 1Fixing end rotates connection.
Refer to shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the spherical bindiny mechanism 4 includes being arranged on the fusion device main body 1Fixing end the first spherical fixator 41 and be arranged on the medial surface of the steel plate 2 and the described first spherical fixator 41The first spherical groove 21 being engaged, the position relative with first spherical groove 21 is provided with second on the lateral surface of the steel plate 2Spherical groove 22, the steel plate 2 is provided with the first through hole 23 through first spherical groove 21 and second spherical groove 22.ToolSay, the fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, 1 point of the fusion device main body is fixing end and work bodyMoved end, the fixing end of the fusion device main body 1 is provided with a first spherical fixator 41 with sphere, it is preferred that describedFirst spherical fixator 41 is integrally formed with the fusion device main body 1.The fixing end of the fusion device main body 1 is provided with through describedFirst connecting hole 12 of the first spherical fixator 41.The screw 3 passes through the first through hole 23 and described first on the steel plate 2The first connecting hole 12 on spherical fixator 41 is fixed with the fusion device main body 1.Now first in the fusion device main body 1Spherical fixator 41 is engaged with the first spherical groove 21.It should be noted that the need in order to coordinate, the first spherical fixationThe front end of device 41 is cut into a plane, is spherical around plane, and the sphere with the first spherical groove 21 is engaged, and can phaseThe steel plate 2 is rotated.Screw thread is provided with wherein described first connecting hole 12, the screw 3 is by screw thread and fusion device main body 1It is fixed.Specifically, the spherical groove 22 of first spherical groove 21 and second is oppositely arranged, and two spherical groove the tangent are set to first and lead toHole 23, the first through hole 23 with diameter greater than screw rod on screw 3 diameter and less than the diameter of nut so that fusion device main body1 relative to steel plate 2 rotate when be will not interfere with certain slewing area.
Refer to shown in Fig. 2, Fig. 5 and Fig. 6, wherein, it is provided with packing ring 24 in second spherical groove 22.The packing ring 24Shape matches with the shape of second spherical groove 22.So that screw 3 with fusion device main body 1 when rotating, packing ring 24 can be withSlided to adapt to the direction of screw 3 in the second spherical groove 22, so as to ensure that the nut on screw 3 can be with packing ring 24 and steel plate2 are in fit-state.
It is equipped with please continue to refer to shown in Fig. 2, being additionally provided with the steel plate 2 in some fixing holes 25, each fixing hole 25Fixing screws 31, some fixing screws 31 are used to be connected with cervical vertebra cone, and each fixing screws 31 are tapping screw.SpecificallySay, in the present embodiment, the upper/lower terminal of the steel plate 2 is respectively equipped with two fixing holes 25, and two fixing holes 25 of upper end are obliqueNail, its internal fixing screws 31 are used to be connected with cervical vertebra upper cone, and the fusion device main body 1 is provided with skew nailing groove 13.MakeUsed time, fixing screws 31 are penetrated from skew nailing hole and squeeze into upper centrum obliquely upward by skew nailing groove 13.Two fixations of lower endHole 25 is vertical nail, and the fixing screws 31 installed in it squeeze into lower cone perpendicular to steel plate 2.
In the implantation process of fusion device main body 1, be brought into close contact for the bone face for preferably ensureing neighbouring cone, it is necessary toAdjustment fusion device main body 1 arrives the position for needing.During operation, first fusion device main body 1 is implanted between upper lower cone, then from otchPlace is put into steel plate 2, it is to avoid steel plate 2 is fixed together with fusion device main body 1, it is necessary to open up the situation of larger otch, is reducedThe pain of injury of patient.Packing ring 24 is put into the second spherical groove 22 again, screw 3 is then sequentially passed through into packing ring 24, the second spherical groove22nd, the first connecting hole 12 so that the first spherical fixator 41 is located in first spherical groove 21, and rotates screw 3, willThreaded engagement in the connecting hole 12 of screw 3 and first so that screw 3 is relatively fixed with fusion device main body 1, and ensure now nutIt is lax cooperation with packing ring 24, then as needed, the position of adjustment fusion device main body 1, now fusion device main body 1 is using theOne spherical fixator 41 is engaged with the first spherical groove 21 and is arbitrarily rotated around steel plate 2, has reached the purpose of debugging.Finally by screw3 are tightened so that fusion device main body 1 is fixed with respect to steel plate 2.Now, because having additional the packing ring being adapted with the shape of spherical groove 2324 so that when rotating, the nut of screw 3 can completely fit fusion device main body 1 with steel plate 2.
Embodiment 2
Refer to shown in Fig. 7, another implementation method of self-adapting float combination cervical vertebra Invasive lumbar fusion device of the present invention includes：MeltClutch main body 1, steel plate 2, screw 3 and spherical bindiny mechanism 4, the screw 3 are solid through steel plate 2 and the spherical bindiny mechanism 4It is scheduled in the fusion device main body 1, the fixing end that the steel plate 2 passes through the spherical bindiny mechanism 4 and the fusion device main body 1Rotate connection.
Refer to shown in Fig. 7, Fig. 8 and Fig. 9, the spherical bindiny mechanism 4 includes being arranged on the medial surface of the steel plate 2The second spherical fixator 42 and be arranged on the fixing end of the fusion device main body 1 and the described second spherical fixator 42 matchesThe 3rd spherical groove 14 for closing.The position relative with the described second spherical fixator 42 is provided with the 4th on the lateral surface of the steel plate 2Spherical groove 26, the steel plate 2 is provided with the second through hole through the 4th spherical groove 26 and the second spherical fixator 4227.The fixing end of the fusion device main body 1 is provided with the second connecting hole 15 through the 3rd spherical groove 14, and the screw 3 is wornSecond through hole 27 and second connecting hole 15 is crossed to be fixed with the fusion device main body 1.
Specifically, the fusion device main body 1 is provided with the fusion hole 11 of up/down perforation, and 1 point of the fusion device main body isFixing end and movable end, the fixing end of the fusion device main body 1 are provided with the 3rd spherical groove 14 for caving inward, describedThe bottom of three spherical groove 14 is provided with second connecting hole 15, second connecting hole 15 to the fusion direction of hole 11 and is provided with screw thread.The inside and outside two sides in top of the steel plate 2 it is relative be respectively equipped with the second spherical fixator 42 and the 4th spherical groove 26, described secondThrough hole 27 runs through the 4th spherical groove 26 and the second spherical fixator 42.The screw 3 leads to through second on steel plate 2Hole 27, and by the described second spherical fixator 42 and the 3rd spherical groove 14, be arranged in the second connecting hole 15 with it is describedFusion device main body 1 is threadably secured.It should be noted that second through hole 27 with diameter greater than on screw 3 screw rod it is straightFootpath and less than the diameter of nut so that fusion device main body 1 relative to steel plate 2 rotate when be will not interfere with certain slewing area.
Refer to shown in Fig. 6, Fig. 7 and Fig. 9, wherein, it is provided with packing ring 24 in the 4th spherical groove 26.The packing ring 24Shape matches with the shape of the 4th spherical groove 26.So that screw 3 with fusion device main body 1 when rotating, packing ring 24 can be withSlided to adapt to the direction of screw 3 in the second spherical groove 22, so as to ensure that the nut on screw 3 can be with packing ring 24 and steel plate2 are in fit-state.
It is equipped with please continue to refer to shown in Fig. 7, being additionally provided with the steel plate 2 in some fixing holes 25, each fixing hole 25Fixing screws 31, some fixing screws 31 are used to be connected with cervical vertebra cone, and each fixing screws 31 are tapping screw.SpecificallySay, in the present embodiment, the upper/lower terminal of the steel plate 2 is respectively equipped with two fixing holes 25, and two fixing holes 25 of upper end are obliqueNail, its internal fixing screws 31 are used to be connected with cervical vertebra upper cone, and the fusion device main body 1 is provided with skew nailing groove 13.MakeUsed time, fixing screws 31 are penetrated from skew nailing hole and squeeze into upper centrum obliquely upward by skew nailing groove 13.Two fixations of lower endHole 25 is vertical nail, and the fixing screws 31 installed in it squeeze into lower cone perpendicular to steel plate 2.
Installation method will not be repeated here with embodiment 1.
Above specific descriptions of the invention are intended to illustrate with the implementation of specific embodiment, it is impossible to be not understood as to thisThe limitation of invention, those skilled in the art under the teachings of the present invention, can make various on the basis of the embodiment for describing in detailVariant, these variants should be included within design of the invention.Scope of the present invention is only by described rightState and limited.