Implants, Intervertebral disc fusion device and artificial intervertebral disk for spinal decompressionTechnical field
The present invention relates to a kind of medicine equipment, particularly a kind of a kind of implants for spinal decompression, or intervertebralBone grafting fusion cage, even more a kind of artificial intervertebral disk.
Background technology
The decompression of anterior cervical vertebrae intervertenral space, bone grafting fusion are the classics operations after over half a century, and solve cervical vertebra and move backRow becomes, the unique effective ways of spinal compression cervical spondylotic myelopathy.The key of operation is that spinal cord is thoroughly depressurized.After decompressionThe intervertenral space left leaves defect after removing the disc tissue of regression, it is necessary to which bone grafting converged reconstruction is stable.Except traditional autologous iliumOutside the musculus cutaneus matter bone piece of bone three filling bone grafting, in recent years, various new technology sequential uses.Come off, shift for the bone piece after bone grafting,The complication such as sinking and ilium are widely used in addition to bone-grafting material is substituted for complication such as area's neurotrosis, pain, infectionMajor technique has：Intervertebral disc fusion device adds anterior plate to fix again, forms representational major technique, or even be referred to as at presentTreat " goldstandard " of retrogression.
The problem of prior art is present be：The key of anterior cervical operation is thoroughly effective to spinal cord progress from intervertenral spaceDecompression, but in the process of cervical spine degeneration, the most Serious Stenosis of interbody space, in general operating theater instruments, such as curet, nucleus pulposus clampDeng, be all difficult to enter, sight be even more seriously blocked.Therefore, to reach thoroughly effective decompression, first have to follow closely by means of centrum and outerThe vertebrae strutting device put, the narrow intervertenral space of regression is axially strutted, expand intervertenral space, the sight of patient is seen clearly and be convex toThe cause pressure thing of intraspinal tube, and apparatus is sent into, carefully pressure thing will be caused to separate and take out from spinal cord surface.But after this step is implemented,Centrum nail is often cut in vertebral cancellous bone, causes cancellous bone fracture, iatrogenic osteoporosis；After the completion of decompression, implantationIntervertebral disc fusion device, be commonly hardness at present and be made much larger than the metal of cancellous bone and poly- fan's ethyl ketone material, and generally depositLarger in fusion device height step span, therefore, dissection suitability is poor：Height deficiency, then easily loosen dislocation；It is highly excessive,Then easily sink, squeeze on or below centrum, intervertenral space is become narrow again.To prevent these problems, generally in implantation intervertebralAfter bone grafting fusion cage, then add anterior plate to fix, but cancellous bone is once destroyed using centrum nail because being strutted in art, veryTo " cutting ".And all implants that the clinical approval of anterior approach at present uses, itself does not possess the ability axially strutted backward,Such as Invasive lumbar fusion device and steel plate, and once it is implanted into, has just blocked sight completely, and any decompression can not be carried out again, therefore when decompressionAfter the completion of, because centrum follows closely the destruction to cancellous bone, then implant plate, therefore usually substantially reduce steel plate screw stability, and depositIn the potential danger that steel plate loosens.In recent years, do not merged after decompression, and use the non-fusion technology of reconstruction (using artificialThe non-fused implants Using prosthesis of cervical intervertebral disk), because the purpose is to preserve reconstruction motor function, therefore can not again plus steel plate is consolidatedIt is fixed.Retrogression pathological changes, mostly occur in the elderly, be often associated with different degrees of osteoporosis, therefore above mentioned problem often results inThe severe complications such as the dislocation of bone grafting fusion cage, loosening, sinking, especially no longer plus Interal fixation cervical artificial disc, pineDynamic, sinking, abjection even drop out completely, produce severe complication, operation is fallen flat, and turn into the great of puzzlement doctor and patientProblem, satisfied solution is not obtained yet at present.
The content of the invention
In order to solve the problems, such as existing implants system spinal decompression operation in it is inconvenient for use, the invention provides one kindImplants, Intervertebral disc fusion device and artificial intervertebral disk for spinal decompression, this is used for the implants first of spinal decompression, led toCross predetermined trajectory, it can be ensured that precisely adaptation, convenient implantation and safety.Secondth, adjustable axle is realized accurate to strutting, compressingGap is adjusted, union depressurizes and be implanted as a step.3rd, implants form three-dimensional overall mechanics module, screw with upper and lower centrumVertebral cancellous bone is implanted into, track is embedded in soleplate, and track and fusion device occlusion are fixed between realizing interface.
The technical solution adopted for the present invention to solve the technical problems is：A kind of implants for spinal decompression, includingUpper implant and lower implant, the bottom of upper implant are provided with the upper insertion section for being used for inserting vertebra gap, and the top of lower implant, which is provided with, to be usedIn the lower insertion section in insertion vertebra gap, upper insertion section and lower insertion section can insert vertebra gap simultaneously, described to be used for vertebraThe implants of decompression also include the strutting assembly that can separate implant and lower implant.
In the form of sheets, upper insertion site is in the lower end of upper implant, and upper insertion section is vertical with upper implant, and upper insertion section is for upper implantStrip or sheet.
Insertion section is equipped with left and right sides of upper implant lower end, upper insertion site is in the lower end of upper implant, upper insertion sectionVertical with upper implant, upper insertion section is column, and the lower end of upper insertion section is slide rail, and two upper insertion sections are parallel to each other.
The section configuration of upper insertion section be top isosceles triangle upward or tip water-drop-shaped upward or inverted T-shaped,Or top is that the isosceles triangle bottom of top upward is top upward trapezoidal.
Both sides in the middle part of upper insertion section are equipped with bar shaped fin, and length direction of the fin along upper insertion section is set, two wingsIn piece is generally aligned in the same plane.
The strutting assembly includes the upper adjustment barrel at left and right sides of upper implant, the lower regulation at left and right sides of lower implantCylinder and two screw rods, the both sides of the screw rod in left side are threadedly coupled with the upper adjustment barrel in left side and the lower adjustment barrel in left side respectively, rightThe both sides of the screw rod of side are threadedly coupled with the upper adjustment barrel on right side and the lower adjustment barrel on right side respectively, the thread rotary orientation on screw rod topCan separate upper implant and lower implant on the contrary, rotating two screw rods with the thread rotary orientation of screw rod bottom.
The strutting assembly includes the upper rack at left and right sides of upper implant and the lower rack at left and right sides of lower implant,The broached-tooth design of the upper rack in left side is mutually engaged with the broached-tooth design of the lower rack in left side, the broached-tooth design of the upper rack on right side withThe broached-tooth design of the lower rack on right side is mutually engaged, and upper rack and lower rack overcoat are set up defences only upper rack and the set of lower rack separationCylinder, the strutting assembly can only be such that implant and lower implant unidirectionally separates.
In upper implant and lower implant mirror image each other, upper implant and lower implant are generally aligned in the same plane.
A kind of Intervertebral disc fusion device, the upper surface of the Intervertebral disc fusion device are provided with and the above-mentioned spinal decompression that is used forThe upper hopper chute that the upper insertion section of implants matches, the lower surface of the Intervertebral disc fusion device is provided with to be subtracted with above-mentioned for vertebraThe gliding groove that the lower insertion section of the implants of pressure matches.
A kind of artificial intervertebral disk, the artificial intervertebral disk contain female members setting up and down and male member, and the upper surface of the female members is setHave a upper hopper chute that the upper insertion section with the above-mentioned implants for spinal decompression matches, the lower surface of the male member be provided with it is upperThe gliding groove that the lower insertion section for the implants for spinal decompression stated matches.
The beneficial effects of the invention are as follows：
Firstth, predetermined trajectory is passed through, it can be ensured that precisely adaptation, convenient implantation and safety.
Secondth, adjustable axle realizes precisely adjustment gap to strutting, compressing, and union depressurizes and be implanted as a step.
3rd, implants form three-dimensional overall mechanics module, screw placement vertebral cancellous bone, track insertion with upper and lower centrumSoleplate, track and fusion device occlusion are fixed between realizing interface.
Brief description of the drawings
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the schematic perspective view for the implants for being used for spinal decompression in embodiment 1.
Fig. 2 is the perspective exploded view for the implants for being used for spinal decompression in embodiment 1.
Fig. 3 is the section structure diagram of insertion section on the first.
Fig. 4 is the section structure diagram of insertion section on second.
Fig. 5 is the section structure diagram of insertion section on the third.
Fig. 6 is the structural representation of strutting assembly in embodiment 2.
Fig. 7 is the schematic perspective view of Intervertebral disc fusion device.
Fig. 8 is the schematic perspective view of artificial intervertebral disk.
Fig. 9 is that upper insertion section and lower insertion site put schematic perspective view staggeredly.
The schematic diagram for the cervical vertebral space regression compression of spinal cord that Figure 10 is.
The schematic diagram of anterior disc tissue removed is needed in the art that Figure 11 is.
The schematic diagram for being implanted into the implants for being used for spinal decompression that Figure 12 is.
What Figure 13 was struts the schematic diagram for appearing vertebra gap rear portion.
Figure 14 is the schematic diagram thoroughly depressurized.
Figure 15 is the schematic diagram that Intervertebral disc fusion device is inserted along track.
Figure 16 is the schematic diagram in A directions in Figure 12.
Figure 17 is the schematic diagram in B directions in Figure 13.
Wherein 10. implants, implant on 1., on 2. insertion section, 3. fins, adjustment barrel on 4., 5. through holes, 6. times implant,7. lower insertion section, 8. nuts, 9. times adjustment barrels, 11. screw rods, 12. upper racks, 13. times racks, 14. sleeves；
20. Intervertebral disc fusion device, 21. upper hopper chutes, 22. gliding grooves；
30. artificial intervertebral disk, 31. female members, 32. male members, 33. upper hopper chutes, 34. gliding grooves.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phaseMutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1
A kind of implants for spinal decompression, the implants 10 for spinal decompression include upper implant 1 and lower plantBody 6, the bottom of upper implant 1 are provided with the upper insertion section 2 for being used for inserting vertebra gap, and the top of lower implant 6, which is provided with, to be used to insert ridgeThe lower insertion section 7 of intervertenral space, upper insertion section 2 and lower insertion section 7 can insert vertebra gap simultaneously, described for spinal decompressionImplants also include the strutting assembly that can separate implant 1 and lower implant 6, as depicted in figs. 1 and 2.
The gap that upper insertion section 2 and lower insertion section 7 can be inserted between two vertebras simultaneously, then make the strutting assembly willThe length direction of upper implant 1 and lower implant 6 along vertebra is separated from each other (upper the distance between implant 1 and lower implant 6 gradually increase),So as to strut the gap between two vertebras, in order to which doctor can see situation between vertebra and carry out next stepOperation.The specific configuration of the implants 10 for spinal decompression is described below.The surface of upper implant 1 and lower implant 6 is all provided withThere is the through hole 5 passed through for bone screws, as shown in figure 1, the surface of upper implant 1 and lower implant 6 is equipped with and passed through for bone screws2 through holes 5.
In the present embodiment, in the form of sheets, upper insertion section 2 is located at the lower end of upper implant 1, upper insertion section 2 and upper plant to upper implant 1Body 1 is vertical, and upper insertion section 2 is strip or sheet.It is preferred that the structure phase on the top and the end of anterior plate fixation of upper implant 1Together.The medianly zygomorphic of the upper lower end of implant 1 is provided with upper insertion section 2, i.e., the upper lower end of implant 1 is provided with two upper insertion sections 2, onInsertion section 2 is strip, and two upper insertion sections 2 are parallel to each other.The lower end of upper implant 1 is additionally provided with low groove, and the low groove is located at twoBetween individual upper insertion section 2., can be in order to observing the gap between vertebra when the low groove inserts vertebra gap in upper insertion section 2；The low groove, can be in order to observing the situation between vertebra when strutting vertebra gap.The upper end of lower implant 6 is additionally provided with fovea superiorGroove, when not being softened, the area between the upper groove and the low groove is 1cm2~3cm2。
In the present embodiment, the section configuration of upper insertion section 2 is the isosceles triangle of top upward, as shown in Figure 3；Or pointThe water-drop-shaped of end upward, as shown in Figure 4；Or inverted T-shaped, as shown in Figure 5；Or top is that the isosceles triangle bottom of top upward isTop upward trapezoidal.It is preferred that the monosymmetric of the upper middle part of insertion section 2 is provided with bar shaped fin 3, fin 3 is along upper insertion section 2Length direction is set, and two fins 3 are generally aligned in the same plane interior.
In the present embodiment, in upper implant 1 and lower implant 6 mirror image each other, upper implant 1 and lower implant 6 are generally aligned in the same plane,As depicted in figs. 1 and 2.Due to upper implant 1 and lower implant 6 mirror image each other, so no longer carrying out weight to the concrete structure of lower implant 6It is multiple to introduce.Upper insertion section 2 and lower insertion section 7 can be gone up the distance between insertion section 2 for two and are equal to two with mirror image each other symmetrical above and belowThe distance between individual lower insertion section 7；Or after upper insertion section 2 and lower insertion section 7 can be with mirror images each other symmetrical above and below, upper insertionStagger a certain distance between portion 2 and lower insertion section 7, i.e., the position of upper insertion section 2 and lower insertion section 7 is staggered, such as Fig. 9 institutesShowing, the distance between insertion sections 2 might be less that the distance between two lower insertion sections 7 on such as two, or, two upper insertionsThe distance between portion 2 can also be more than the distance between two lower insertion sections 7, as the underthrust in left side is arrived in the upper insertion section 2 in left sideEnter lower insertion section 7 of the distance between the portion 7 equal to left side the distance between to the lower insertion section 7 on right side, the lower insertion section 7 in left sideThe distance between lower insertion section 7 to right side is equal to the lower insertion section 7 on right side the distance between to the upper insertion section 2 on right side.ThisThe position of insertion section 2 and lower insertion section 7 is staggered on sample, is easy to upper insertion section 2 and lower insertion section 7 to insert vertebra gap.
In the present embodiment, the strutting assembly is included positioned at the symmetrically arranged upper adjustment barrel 4 in the upper left and right sides of implant 1, positionIn the lower symmetrically arranged lower adjustment barrel 9 in the left and right sides of implant 6 and two screw rods 11, upper adjustment barrel 4 and lower adjustment barrel 9 are tubularThe inner surface of structure, upper adjustment barrel 4 and lower adjustment barrel 9 is equipped with internal thread, the both sides up and down of the screw rod 11 in left side respectively with a left sideThe upper adjustment barrel 4 of side and the lower adjustment barrel 9 in left side are threadedly coupled, the up-regulation with right side respectively of both sides up and down of the screw rod 11 on right sideThe lower adjustment barrel 9 on section cylinder 4 and right side is threadedly coupled, the thread rotary orientation on the top of screw rod 11 and the thread rotary orientation phase of the bottom of screw rod 11Instead, while rotating two screw rods 11 can be such that implant 1 and lower implant smoothly separates, so as in upper insertion section 2 and lower insertionAfter portion 7 inserts the gap between two vertebras, the gap between two vertebras is strutted.For the ease of the rotation of screw rod 11, screw rod11 are fixedly arranged in the middle of nut 8 (such as nut 8 with screw rod 11 weld), and nut 8 can not produce relative rotation between screw rod 11, turnDynamic nut 8 is rotatable screw rod 11.
All parts for being used for the implants of spinal decompression can be made of medical titanium alloy.Upper adjustment barrel 4 withCan be using non-dismountable connection (welding) or by the way of being detachably connected (grafting or mode connects for screw) between upper implant 1.LowerNon-dismountable connection (welding) can also be used between section cylinder 9 and lower implant 6 or is detachably connected (grafting or mode connects for screw)Mode.Provided with the protuberance being easy to and upper adjustment barrel 4 is connected, it is prominent that upper adjustment barrel 4 is fixed on this for the left and right sides of upper implant 1Go out portion, as depicted in figs. 1 and 2.
The specific configuration of the implants for spinal decompression is described above, is described below and is used for the interior of spinal decompression with thisA kind of Intervertebral disc fusion device that plant is used cooperatively, the Intervertebral disc fusion device 20 are that both sides are provided with track runner, Wu Ding, nothingBottom and hollow drawer-type structure, the upper surface of the Intervertebral disc fusion device 20 are provided with what is matched with the lower end of upper insertion section 2Upper hopper chute 21 (i.e. track runner), the lower surface of the Intervertebral disc fusion device 20 are provided with what is matched with the upper end of lower insertion section 7Gliding groove 22 (i.e. track runner), as shown in Figure 7.When the implants that this is used for spinal decompression strut the gap between two vertebrasWhen, the Intervertebral disc fusion device 20 can rely on upper hopper chute 21 and the corresponding grafting of upper insertion section 2, and upper insertion section 2 is column, onThe lower end of insertion section 2 forms slide rail, the corresponding grafting of gliding groove 22 and lower insertion section 7, and lower insertion section 7 is column, lower insertionThe upper end in portion 7 also form slide rail, so as to be slideably inserted between two vertebras.The function of the Intervertebral disc fusion device is to loadAnd gather the broken skeletal grain of transplanting, its effective and upper sending down the fishbone soleplate is directly contacted, realize Bony union.
Introduce a kind of artificial intervertebral disk that a kind of implants for being used for spinal decompression with this are used cooperatively again below, this is artificialInterverbebral disc 30 contains female members 31 and male member 32 setting up and down, and female members 31 is made up of high polymer material, such as medical macromolecular materials,Male member 32 is made up of metal material, and as medical stainless steel is made, the upper surface of the female members 31 is provided with what is matched with upper insertion section 2Upper hopper chute 33, the lower surface of the male member 32 are provided with the gliding groove 34 to match with lower insertion section 7, as shown in Figure 8.When this is used for ridgeWhen the implants of vertebra decompression strut the gap between two vertebras, the artificial intervertebral disk 30 can rely on upper hopper chute 33 and upper insertionThe corresponding grafting in portion 2, the corresponding grafting of gliding groove 34 and lower insertion section 7, so as to be slideably inserted between two vertebras.
Embodiment 2
The present embodiment is that one kind of embodiment 1 is improved, and in the present embodiment, the strutting assembly includes being located at upper implant 1The upper rack 12 of the left and right sides and the lower rack 13 positioned at the lower left and right sides of implant 6, as shown in fig. 6, upper rack 12 and upper implant 1It is fixedly connected, lower rack 13 is fixedly connected with lower implant 6.The broached-tooth design of the upper rack 12 in left side and the lower rack 13 in left sideBroached-tooth design is mutually engaged, and the broached-tooth design of the upper rack 12 on right side is mutually engaged with the broached-tooth design of the lower rack 13 on right side, upper toothBar 12 and the lower overcoat of rack 13 are set up defences only upper rack 12 and the sleeve 14 of lower rack 13 separation, and the strutting assembly can only make plantBody 1 and lower implant 6 unidirectionally separate, and without making mutually to draw close between upper implant 1 and lower implant 6, i.e., can only make implant 1 withThe distance between implant 6 becomes big and the distance between implant 1 and lower implant 6 can not be made to diminish.
The other technical characteristics of the present embodiment are same as Example 1, and in order to save length, this patent is no longer situated between in detailContinue.
The specific configuration of the implants for spinal decompression, Intervertebral disc fusion device and artificial intervertebral disk is described above,Below by the application for introducing the implants for being used for spinal decompression of illustrating, for the ease of the understanding of non-medical applications technical staff,This patent will comprehensively be introduced with reference to background technology.The implants for spinal decompression in embodiment 1 and embodiment 2 are equalIt can be used in herein below.
Backbone retrogression, it is the difference of the inevitable rule of development in the course of human life, only degree weight, justIt is inevitable as life must move towards termination.Therefore, once having oppressed spinal cord, before life does not terminateParaplegia symptom is caused, and progressive aggravates, decompression simultaneously rebuilds stable function, is unique treatment method.And technologyDevelopment, direction can only be that promotion method is constantly perfect.For depressurizing the separation with implants implantation step, so that dissectionSuitability is poor, caused by loosening, displacement, dislocation, sink enter centrum (when being depressurized for the first time destroy vertebral cancellousBone), the height after intervertenral space reconstruction is lost and is become again narrow.
For these problems, applicants have invented the implants 10 for spinal decompression, it is intended to makes implants itself firstThe function of adjustment is strutted with reliable and stable axial direction, without being further divided into two separated steps, is thoroughly exempted because struttingAnd thicker centrum nail is used to cause to destroy the first time of vertebral cancellous bone；For solve dissect suitability, make implants withDecompression removes pathology and causes the intervertenral space space after the disc tissue of pressure regression to be accurately bonded, after strutting decompression, with whole up and downPlate surface is " ground ", respectively sets two tracks, and being brought into close contact on face, the accurate distance into depth are defined with this, andConfirm under direct-view, so as to fundamentally avoid because being implanted into the too deep danger for oppressing spinal cord again.After being provided with due to trackIt is to be in fully to strut and in the state of secure support, static state now is the accurate required height filled with implants,So as to be inherently eliminated strut decompression with apparatus after replant the clearance height into implants, brought by the replacing of apparatus and becomeSuitability error is dissected caused by changing institute's certainty, and patient's experience, technology and feel can only be leaned on to make up, therefore is objectively causedThe difference of surgical outcome and the generation of consecutive complications.After this technology fully struts lesion gap, except providing good sight,It is easy to safety fully decompression outer, actually also just completes the important step of this implantation of the laying of track, traditional is struttedTwo steps that decompression and implants selection implantation separate each other, are combined into a step, disc height now, are complete dissection adaptationHeight under required accurate static state.Prefabricated load bone bone grafting fusion cage, is highly seriation, the difference using 1mm as ladderAway from from minimum 7mm to maximum 14mm, covering all height of mankind's intervertenral space, select optimum one piece, be sent into track and insertEnter, such as still have resistance, then do the fine setting within 1mm, until smoothly such as the insertion of drawer type in place, that is, completes the whole of interplantationImplantation, decompression and repairing stabilization are accomplished without any letup (as shown in Figure 10 to Figure 17).Equally, as selection uses non-fused artificial intervertebralDisk, then the load bone fusion device of intervertebral bone graft being replaced by into a kind of artificial intervertebral disk of combined type, (interior is spherical-concave-surface joint, and sphere isMetal, concave surface are macromolecule polymer material, are existing general joint prosthesis process materials), identical size is selected, still as sendingEnter drawer equally to insert, but in non-fused art formula, the positive/negative thread nut bolt of longitudinal both sides is replaced by advanceIt is plug-type movable connection method with coupling for track steel plate, after artificial intervertebral disk inserts in place, removes the nut of bilateralBolt, that is, complete implantation.This mode forms the two-way mechanics integral module of three dimensions.In fusion mode, track steel plateLay in addition to the soleplate of two track bar steels (i.e. upper insertion section 2 and lower insertion section 7) embedded bilateral, steel plate separately there are two pieces of cancellous bonesScrew enters vertebral cancellous bone, forms strong efficient support power region, changes the support force of cancellous bone under the soleplate of double track basisGreatly enhanced for track steel plate L-type into the support force of angular position metal.Upper and lower longitudinal bolt phase of the L-type track steel plate through bilateralLian Hou, control centrum produces and the relatively anti-distracting force of backbone axial load, narrow intervertenral space is efficiently separated expansion, makes passDecompression of the key step to spinal cord possesses sight good under direct-view, the intervertenral space expanded after the completion of decompression, under inactive stateHighly, it is the accurate data of dissection adaptation, directly chooses precisely suitable Intervertebral disc fusion device, it is plug-type just like drawerMode, it is sent directly into, just as closing drawer, accurately in place, that is, completes the process of implantation.Now, the daily axial direction of backboneLoad load-bearing, then the intervertebral metal bone grafting fusion cage inserted completely by drawer undertake, therefore produce the bilateral stud of axial distracting forceCarrying support effectively shared, its metal fatigue fracture possibility it is almost nil.Simultaneously as be integrally attached to, it is front and rear, leftRight, upper and lower three dimensions is fixed, and active force offsets, and such as no matter bone grafting fusion cage sinks to centrum up or down, thenPulling force can be produced by the other end and effectively be limited, form good stabilization, and reach preferable stable state, it is clearly effectiveThe generation of the complication such as loosening, dislocation, sinking is prevented, until Bony union.Equally, such as select non-fused artificial intervertebral disk falseBody is implanted into, then the axially adjustable positive/negative thread bolt strutted of bilateral is changed into detachable mode, and thoroughly decompression is completed when struttingAfterwards, the prosthese of choosing dissection adaptation completely, drawer type insertion positioning, and along after snap-lock between track interface, remove bi-lateral supportBolt, artificial disc after arthroplasty can produce flexion movement (front and rear), while left and right, upper and lower substantially stabilized, reach current manualThe optimal stable state of cervical intervertebral disk, effectively avoid prothesis dislocation, the complication sunk occurs.
Anterior plate fixation, it has been that worldwide medical device implants supervision department in various countries' generally ratifies at presentIn one of clinical widely used backbone implants, using anterior plate fixation as basic structure, one end is cervical steel plate pattern, separatelyOne end is to extend along steel plate both sides hollow considerable, and in position in 90 ° of bendings, its considerable cross section is trapezoidal threeAngle, centre have fin 3 to form ladder type triangle, and tip (i.e. Fig. 3 to Fig. 5 upper end) can be embedded in soleplate, and fin 3 is bonded after soleplate admittedlyDue to endplate surface trapezium structure track.The L-shaped track steel plate of the same track of two panels is relative, is fixed (or plug-type) by outsideBoth ends positive/negative thread nut bolt is connected with steel plate, and the four-footed of 90 ° of bendings is with respect to (as shown in Figure 1).During implantation, first by four-footedThe preliminary intervertenral space for removing regression disc tissue of track (upper insertion section 2 and lower insertion section 7) insertion, in place after, both ends steel plateIt can be bonded with conical surface, now, rotation both sides positive/negative thread bolt 11 then makes both sides steel plate (upper implant 1 and lower implant 7)Separation, four-footed are close to soleplate up and down, after the embedded soleplate in trapezoidal triangle tip, further revolve bolt 11, while be implanted on steel plateVertebral cancellous bone screws, steel plate is brought into close contact and hold centrum, conical surface is fixed at both ends, further rotates bilateral spiral shellBolt, enough distracting force are produced, the gap for making regression narrow is returned to optimum state, as shown in FIG. 10 to 14.The step forIt is the necessary step of implant dissection adaptation, while is also decompression, sight is entered deep, clear view to lesion pressureCompel the steps necessary at spinal cord position.At present in clinical practice, the two steps are still separation；Implants all at present are notPossesses the function of appearing visual area.Therefore, this structure and conception, it is one of clear and definite innovative point of this implementation technology, will be deepTwo committed steps of portion visual area and implants implantation combine；Another innovative point is predetermined trajectory, makes implantationThing (bone grafting fusion cage 20 or cervical artificial disc 30) closely combines with the space after decompression with dissecting the precise height being adapted toTogether.Meanwhile safe depth and scope are defined by track, simultaneously because the occlusion of track, realize steady between interfaceIt is fixed and fixed, specify the intuitive and reliable technical advantage for eliminating loosening, displacement, dislocation, the hidden danger sunk, making implants, hairUnprecedented desired level is waved, while structure is concise, reduces the area that cervical vertebra is completely covered in raw steel plate, manufacturing processIt is uncomplicated, there is clear and definite intuitively realizability.
The beneficial effects of the invention are as follows：
Firstth, predetermined trajectory is passed through, it can be ensured that precisely adaptation, convenient implantation and safety.
Secondth, adjustable axle realizes precisely adjustment gap to strutting, compressing, and union depressurizes and be implanted as a step.
3rd, implants form three-dimensional overall mechanics module, screw placement vertebral cancellous bone, track insertion with upper and lower centrumSoleplate, track and fusion device occlusion are fixed between realizing interface.
It is described above, it is only the specific embodiment of the present invention, it is impossible to the scope implemented is invented with its restriction, so it is equivalentThe displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, it should all still fall within what this patent was coveredCategory.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme withIt can be used between technical scheme with independent assortment.