CN105662661A

CN105662661A - Implant for spinal decompression, intervertebral implanted bone fusion cage and artificial intervertebral disc

Info

Publication number: CN105662661A
Application number: CN201610108404.1A
Authority: CN
Inventors: 邹德威
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-26
Filing date: 2016-02-26
Publication date: 2016-06-15
Anticipated expiration: 2036-02-26
Also published as: CN105662661B

Abstract

The invention provides an implant for spinal decompression, an intervertebral implanted bone fusion cage and an artificial intervertebral disc. The implant (10) for spinal decompression comprises an upper implant body (1) and a lower implant body (6), the lower portion of the upper implant body (1) is provided with an upper inserting portion (2) used for being inserted into a spinal clearance, and the lower implant body (6) serves as a mirror image of the upper implant body (1). The upper implant body and the lower implant body are simultaneously inserted into the intervertebral clearance and fixed through screws to form an upper rail and a lower rail. The implant further comprises a distraction assembly which can separate the upper implant body and the lower implant body, axial distraction and decompression can be regulated, precise clearance regulation is achieved, a vertebral distraction instrument is replaced, the lesion narrow clearance is enlarged, implanting, decompressing, precise fusion cage (or artificial intervertebral disc) feeding along the rails are integrated into one step, a three-dimensional stable mechanical module is formed together with a spinal lesion segment, and complications such as displacement, subsidence and dislocation of the fusion cage (or the artificial interertebral disc) are thoroughly eliminated.

Description

For the implants of spinal decompression, Intervertebral disc fusion device and artificial intervertebral disk

Technical field

The present invention relates to a kind of medical apparatus and instruments, particularly a kind of implants for spinal decompression, or a kind of Intervertebral disc fusion device, especially a kind of artificial intervertebral disk.

Background technology

The decompression of anterior cervical vertebrae intervertebral space, bone-graft fusion are the classical operations going through over half a century, are also solve cervical vertebra degeneration, the unique effective ways of spinal compression cervical spondylotic myelopathy. Operation it is crucial that spinal cord is reduced pressure thoroughly. Defect is left, it is necessary to bone-graft fusion reconstruction of stability after the intervertebral space left over after decompression is removed the disc tissue of regression. Except filling bone grafting except traditional autologous ilium three dough cover matter bone piece, in recent years, various new technique sequential use. Come off for the bone piece after bone grafting, shift, the complication such as sinking and ilium be for complication such as district's nerve injury, pain, infection, except substituting bone-grafting material, widely used major technique has: Intervertebral disc fusion device adds anterior plate again to be fixed, form current representational major technique, be even referred to as " goldstandard " for the treatment of degeneration.

Prior art there is the problem that anterior cervical operation it is crucial that spinal cord carried out thoroughly effective decompression from intervertebral space, but in the process of cervical spine degeneration, the most Serious Stenosis of interbody space, general operating theater instruments, such as curet, nucleus pulposus clamp etc., all being difficult to enter, sight line is seriously blocked especially. Therefore, reach thoroughly effective decompression, first have to borrow vertebral body nail and external vertebrae strutting device, intervertebral space narrow for regression is axially strutted, expand intervertebral space, the sight line enabling patient is seen clearly and is convex to the intraspinal pressure thing that causes, and is sent into by apparatus, carefully will cause and press thing to separate from spinal cord surface and take out. But after this step is implemented, vertebral body nail is everlasting, and vertebral cancellous bone is interior to be cut, and causes cancellous bone fracture, iatrogenic osteoporosis; After having reduced pressure, the Intervertebral disc fusion device of implantation, it is commonly hardness at present and makes much larger than the metal of spongy bone and poly-fan's ethyl ketone material, and ubiquity fusion device height step span is bigger, therefore, dissect suitability poor: highly not enough, then easily loosen dislocation; Highly excessive, then easily sink, vertebral body on or below clamp-oning, make intervertebral space stenosis again narrow.For preventing these problems, it is common to implanting after Intervertebral disc fusion device, then add anterior plate and fix, but carried out once destroying to spongy bone because art struts use vertebral body nail, even " cutting ". And all implants that anterior approach clinic approval at present uses, itself does not all possess the ability backward axially strutted, such as Invasive lumbar fusion device and steel plate, and once implant, just block sight line completely, and any decompression can not be carried out again, therefore after decompression completes, because vertebral body follows closely the destruction to spongy bone then implant plate, therefore usually make steel plate screw degree of stability be substantially reduced, and there is the potential danger that steel plate loosens. In recent years, not merging after decompression, and adopt the non-fusion technology non-fused implants Using prosthesis of cervical artificial disc (adopt) of reconstruction, because its objective is to preserve reconstruction motor function, therefore Interal fixation can not be added again. Degeneration, mostly occur at middle-aged and elderly people, often it is associated with osteoporosis in various degree, therefore the problems referred to above often result in bone grafting fusion cage dislocation, loosen, the severe complication such as sinking, especially no longer add the cervical artificial disc of Interal fixation, loosen, sink, deviate from and drop out even completely, produce severe complication, make operation fall flat, become the significant problem of puzzlement doctor and patient, do not obtain satisfied solution at present yet.

Summary of the invention

In order to solve existing implants system awkward problem in spinal decompression is performed the operation, the invention provides a kind of for the implants of spinal decompression, Intervertebral disc fusion device and artificial intervertebral disk, this is used for the implants first of spinal decompression, passes through predetermined trajectory, may insure that accurate adaptation, convenient implantation and safety. The second, adjustable axle is to strutting, compressing, it is achieved precisely adjust gap, and union reduces pressure and is implanted as a step. 3rd, implants and upper and lower vertebral body form three-dimensional overall mechanics module, screw placement vertebral cancellous bone, and track embeds soleplate, track and fusion device occlusion and realizes between interface fixing.

The technical solution adopted for the present invention to solve the technical problems is: a kind of implants for spinal decompression, including upper implant and lower implant, the bottom of upper implant is provided with the upper insertion section for inserting vertebra gap, the top of lower implant is provided with the lower insertion section for inserting vertebra gap, upper insertion section and lower insertion section can be inserted simultaneously into vertebra gap, and the described implants for spinal decompression also includes making upper implant to strut assembly with lower implant separates.

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 for upper implant, and upper insertion section is strip or lamellar.

The left and right sides of upper implant lower end is equipped with insertion section, and 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 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 is top isosceles triangle upward or tip water-drop-shaped upward or inverted T-shaped or top to be isosceles triangle bottom upward, top be top upward trapezoidal.

Both sides in the middle part of upper insertion section are equipped with bar shaped fin, and fin is arranged along the length direction of upper insertion section, in two fins are generally aligned in the same plane.

This struts assembly and includes being positioned at the upper adjustment barrel of the implant left and right sides, the lower adjustment barrel being positioned at the lower implant left and right sides and two screw rods, threaded with the upper adjustment barrel in left side and the lower adjustment barrel in left side respectively in the both sides of the screw rod in left side, threaded with the upper adjustment barrel on right side and the lower adjustment barrel on right side respectively in the both sides of the screw rod on right side, the thread rotary orientation on screw rod top and the thread rotary orientation of screw rod bottom are contrary, rotate two screw rods and implant can be made to separate with lower implant.

This struts assembly and includes being positioned at the upper rack of the implant left and right sides and be positioned at the lower tooth bar of the lower implant left and right sides, the broached-tooth design of upper rack in left side is engaged mutually with the broached-tooth design of the lower tooth bar in left side, the broached-tooth design of upper rack on right side is engaged mutually with the broached-tooth design of the lower tooth bar on right side, upper rack is set up defences with lower tooth bar overcoat the sleeve that only upper rack separates with lower tooth bar, and this struts assembly and is only capable of and makes implant and the lower unidirectional separation of implant.

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 this Intervertebral disc fusion device is provided with the upper hopper chute that the upper insertion section with the above-mentioned implants for spinal decompression matches, and the lower surface of this Intervertebral disc fusion device is provided with the gliding groove that the lower insertion section with the above-mentioned implants for spinal decompression matches.

A kind of artificial intervertebral disk, this artificial intervertebral disk contains female members setting up and down and male member, the upper surface of this female members is provided with the upper hopper chute that the upper insertion section with the above-mentioned implants for spinal decompression matches, and the lower surface of this male member is provided with the gliding groove that the lower insertion section with the above-mentioned implants for spinal decompression matches.

The invention has the beneficial effects as follows:

The first, predetermined trajectory is passed through, it can be ensured that precisely adaptation, convenient implantation and safety.

The second, adjustable axle is to strutting, compressing, it is achieved precisely adjust gap, and union reduces pressure and is implanted as a step.

3rd, implants and upper and lower vertebral body form three-dimensional overall mechanics module, screw placement vertebral cancellous bone, and track embeds soleplate, track and fusion device occlusion and realizes between interface fixing.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 is the schematic perspective view of the implants in embodiment 1 for spinal decompression.

Fig. 2 is the perspective exploded view of the implants in embodiment 1 for spinal decompression.

Fig. 3 is the section structure schematic diagram of insertion section on the first.

Fig. 4 is the section structure schematic diagram of insertion section on the second.

Fig. 5 is the section structure schematic diagram of insertion section on the third.

Fig. 6 is the structural representation 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 the schematic perspective view that upper insertion section and position, lower insertion section are staggered.

The schematic diagram of the cervical vertebral space regression compression of spinal cord that Figure 10 is.

The art that Figure 11 is needs the schematic diagram of the anterior disc tissue removed.

What Figure 12 was implants this schematic diagram for the implants of spinal decompression.

What Figure 13 was struts the schematic diagram appearing rear portion, vertebra gap.

Figure 14 is the schematic diagram of thoroughly decompression.

Figure 15 is the schematic diagram inserting Intervertebral disc fusion device along track.

Figure 16 is the schematic diagram in A direction in Figure 12.

Figure 17 is the schematic diagram in B direction in Figure 13.

Wherein 10. implants, 1. goes up implant, 2. goes up insertion section, 3. fin, 4. goes up adjustment barrel, 5. through hole, 6. descends implant, 7. descends insertion section, 8. nut, 9. descends adjustment barrel, 11. screw rods, 12. upper racks, 13. times tooth bars, 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.

Detailed description of the invention

It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined. Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

Embodiment 1

A kind of implants for spinal decompression, the described implants 10 for spinal decompression includes upper implant 1 and lower implant 6, the bottom of upper implant 1 is provided with the upper insertion section 2 for inserting vertebra gap, the top of lower implant 6 is provided with the lower insertion section 7 for inserting vertebra gap, upper insertion section 2 and lower insertion section 7 can be inserted simultaneously into vertebra gap, the described implants for spinal decompression also includes making what upper implant 1 and lower implant 6 separated to strut assembly, as depicted in figs. 1 and 2.

Upper insertion section 2 and lower insertion section 7 can be inserted simultaneously into the gap between two vertebras, then make this strut assembly and upper implant 1 and lower implant 6 are separated from each other (upper distance between implant 1 and lower implant 6 is gradually increased) along the length direction of vertebra, thus the gap strutted between two vertebras, in order to doctor can see the situation between vertebra and carry out next step operation. The specific configuration of described implants 10 for spinal decompression is described below. The surface of upper implant 1 and lower implant 6 is equipped with the through hole 5 for bone screw traverse, as it is shown in figure 1, the surface of upper implant 1 and lower implant 6 is equipped with 2 through holes 5 for bone screw traverse.

In the present embodiment, in the form of sheets, upper insertion section 2 is positioned at the lower end of implant 1 to upper implant 1, and upper insertion section 2 is vertical with upper implant 1, and upper insertion section 2 is strip or lamellar. Preferably the top of upper implant 1 is identical with the structure of the end of anterior plate fixation. Upper the medianly zygomorphic of implant 1 lower end is provided with insertion section 2, namely goes up implant 1 lower end and is provided with two upper insertion sections 2, and upper insertion 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 this low groove is on two between insertion section 2. This low groove is when vertebra gap is inserted in upper insertion section 2, it is possible to be easy to observe the gap between vertebra; This low groove is when strutting vertebra gap, it is possible to be easy to observe the situation between vertebra. The upper end of lower implant 6 is additionally provided with upper groove, and when not softened, the area between this upper groove and this low groove is 1cm²～3cm²。

In the present embodiment, the section configuration of upper insertion section 2 is top isosceles triangle upward, as shown in Figure 3; Or the water-drop-shaped that tip is upward, as shown in Figure 4; Or inverted T-shaped, as shown in Figure 5; Or to be isosceles triangle bottom upward, top be on top top upward trapezoidal. The preferably monosymmetric bar shaped fin 3 that is provided with in the middle part of upper insertion section 2, fin 3 is arranged along the length direction of upper insertion section 2, in two fins 3 are generally aligned in the same plane.

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 being no longer repeated the concrete structure of lower implant 6 introducing. upper insertion section 2 and lower insertion section 7 can mirror image each other symmetrical above and below, the distances between two upper insertion sections 2 are equal to the distance between two lower insertion sections 7, or, upper insertion section 2 and lower insertion section 7 can after mirror images each other symmetrical above and below, stagger between upper insertion section 2 and lower insertion section 7 certain distance, namely the position going up insertion section 2 and lower insertion section 7 is crisscross arranged, as shown in Figure 9, as the distance between two upper insertion sections 2 might be less that the distance between two lower insertion sections 7, or, distance between two upper insertion sections 2 can also more than the distance between two lower insertion sections 7, such as the upper insertion section 2 in left side to the distance between the lower insertion section 7 in left side equal to the lower insertion section 7 in left side to the distance between the lower insertion section 7 on right side, the lower insertion section 7 in left side to the distance between the lower insertion section 7 on right side equal to the lower insertion section 7 on right side to the distance between the upper insertion section 2 on right side. stagger in the position so going up insertion section 2 and lower insertion section 7, it is simple to vertebra gap is inserted in upper insertion section 2 and lower insertion section 7.

In the present embodiment, this struts assembly and includes being positioned at the symmetrically arranged upper adjustment barrel 4 in implant 1 left and right sides, it is positioned at the symmetrically arranged lower adjustment barrel 9 in lower implant 6 left and right sides and two screw rods 11, upper adjustment barrel 4 and lower adjustment barrel 9 are tubular structure, the inner surface of upper adjustment barrel 4 and lower adjustment barrel 9 is equipped with female thread, threaded with the upper adjustment barrel 4 in left side and the lower adjustment barrel 9 in left side respectively in the both sides up and down of the screw rod 11 in left side, threaded with the upper adjustment barrel 4 on right side and the lower adjustment barrel 9 on right side respectively in the both sides up and down of the screw rod 11 on right side, the thread rotary orientation on screw rod 11 top and the thread rotary orientation of screw rod 11 bottom are contrary, rotating two screw rods 11 can make implant 1 and lower implant separate smoothly simultaneously, thus after the gap between two vertebras is inserted in upper insertion section 2 and lower insertion section 7, strut the gap between two vertebras.For the ease of the rotation of screw rod 11, screw rod 11 be fixedly arranged in the middle of nut 8 (as nut 8 welds) with screw rod 11, nut 8 can not and screw rod 11 between produce relative rotation, rotating nut 8 i.e. rotatable screw rod 11.

All parts of this implants being used for spinal decompression all can adopt medical titanium alloy to make. The non-dismountable mode being connected (welding) or removably connect (grafting or screw connect) can be adopted between upper adjustment barrel 4 with upper implant 1. Non-dismountable connection (welding) or the mode of removably connect (grafting or screw connect) can also be adopted between lower adjustment barrel 9 and lower implant 6. The left and right sides of upper implant 1 is provided with to be easy to and upper adjustment barrel 4 connects fixing protuberance, and upper adjustment barrel 4 is fixed on this protuberance, as depicted in figs. 1 and 2.

It is described above the specific configuration of the implants for spinal decompression, be described below with this for spinal decompression implants with the use of a kind of Intervertebral disc fusion device, this Intervertebral disc fusion device 20 is provided with track runner for both sides, drawer-type structure without top, bottomless and hollow, the upper surface of this Intervertebral disc fusion device 20 is provided with the upper hopper chute 21 (i.e. track runner) that the lower end with upper insertion section 2 matches, the lower surface of this Intervertebral disc fusion device 20 is provided with the gliding groove 22 (i.e. track runner) that the upper end with lower insertion section 7 matches, as shown in Figure 7. When this implants being used for spinal decompression struts the gap between two vertebras, this Intervertebral disc fusion device 20 can rely on the corresponding grafting of upper hopper chute 21 and upper insertion section 2, upper insertion section 2 is column, the lower end of upper insertion section 2 defines slide rail, the corresponding grafting of gliding groove 22 and lower insertion section 7, lower insertion section 7 is column, and the upper end of lower insertion section 7 also form slide rail, thus being slideably inserted between two vertebras. The function of this Intervertebral disc fusion device is to load and gather the broken skeletal grain of transplanting so that it is effective and upper sending down the fishbone soleplate directly contacts, it is achieved Bony union.

Introduce again below a kind of with this for spinal decompression implants with the use of a kind of artificial intervertebral disk, this artificial intervertebral disk 30 is containing female members 31 setting up and down and male member 32, female members 31 is made for macromolecular material, such as medical macromolecular materials, male member 32 is made for metal material, and as medical stainless steel is made, the upper surface of this female members 31 is provided with the upper hopper chute 33 matched with upper insertion section 2, the lower surface of this male member 32 is provided with the gliding groove 34 matched with lower insertion section 7, as shown in Figure 8. When this struts the gap between two vertebras for implants of spinal decompression, this artificial intervertebral disk 30 can rely on the corresponding grafting of upper hopper chute 33 and upper insertion section 2, and the corresponding grafting of gliding groove 34 and lower insertion section 7, thus being slideably inserted between two vertebras.

Embodiment 2

The present embodiment is a kind of improvement to embodiment 1, in the present embodiment, this struts assembly and includes being positioned at the upper rack 12 of implant 1 left and right sides and be positioned at the lower tooth bar 13 of lower implant 6 left and right sides, as shown in Figure 6, upper rack 12 is fixing with upper implant 1 to be connected, and lower tooth bar 13 is fixing with lower implant 6 to be connected. The broached-tooth design of upper rack 12 in left side is engaged mutually with the broached-tooth design of the lower tooth bar 13 in left side, the broached-tooth design of upper rack 12 on right side is engaged mutually with the broached-tooth design of the lower tooth bar 13 on right side, upper rack 12 and lower tooth bar 13 overcoat are set up defences the sleeve 14 that only upper rack 12 and lower tooth bar 13 separate, this struts assembly and is only capable of and makes implant 1 and the lower unidirectional separation of implant 6, and do not make mutually to draw close between implant 1 and lower implant 6, namely it is only capable of and makes the distance between implant 1 and lower implant 6 become big and the distance between implant 1 and lower implant 6 can not be made to diminish.

The other technologies feature of the present embodiment is all identical with embodiment 1, and in order to save length, this patent is no longer discussed in detail.

It is described above the specific configuration for the implants of spinal decompression, Intervertebral disc fusion device and artificial intervertebral disk, below citing is introduced the application of this implants being used for spinal decompression, for the ease of the understanding of non-medical applications technical staff, this patent comprehensively will be introduced in conjunction with background technology. The implants for spinal decompression in embodiment 1 and embodiment 2 all can use in herein below.

Spinal column degeneration, is law of development inevitable in the course of human life, and the only difference of degree weight must be moved towards just as life termination, be inevitable. Therefore, once oppress spinal cord, causing paraplegia symptom before life does not terminate, and Progressive symmetric erythrokeratodermia increases the weight of, decompression also rebuilds stable function, is unique Therapeutic Method. And the development of technology, direction can only be that promotion method is constantly perfect. Separation for decompression and implants implantation step, so that it is poor to dissect suitability, and cause loosen, displacement, dislocation, sinking enter vertebral body (when being depressurized first time destroy vertebral cancellous bone), it is narrow that the height after making intervertebral space rebuild is lost and again become.

For these problems, applicants have invented the implants 10 for spinal decompression, it is intended to make implants self first have the reliable and stable function axially strutting adjustment, without being further divided into two steps separately, thoroughly exempt and use because of strutting thicker vertebral body nail to cause the first time to vertebral cancellous bone to destroy, for solving to dissect suitability, make implants and decompression remove the intervertebral space space after pathology causes the disc tissue pressing regression accurately to fit, after strutting decompression, with upper and lower endplate surface for " ground ", two tracks are respectively set, define the accurate distance of fitting tightly on face, penetration depth with this, and confirm under direct-view, thus fundamentally avoiding because implanting the danger deeply again oppressing spinal cord. it is at after being provided with due to track fully strutting and under the state of secure support, namely static state now be the height that accurate required implants is filled, thus be inherently eliminated strut decompression with apparatus after replant into implants, the clearance height brought because of the replacing of apparatus changes the dissection suitability error necessarily caused, and patient's experience, technology and feel can only be leaned on to make up, therefore objectively cause the difference of surgical outcome and the generation of consecutive complications. after this technology fully struts pathological changes gap, except providing good sight line, it is easy to outside safety fully decompression, actually also just complete the important step laying this implantation of track, traditional strutting is reduced pressure and implants selects to implant two steps separated from one another, being combined into a step, disc height now, is namely dissect the height under adaptive required accurate static state completely. prefabricated load bone bone grafting fusion cage, highly for seriation, with the 1mm gap being ladder, from minimum 7mm to maximum 14mm, cover all height of mankind's intervertebral space, select optimum one piece, send into track and insert, as still having resistance, do the fine setting within 1mm again, until the insertion such as drawer type puts in place smoothly, namely completing the whole of interplantation and implant, decompression and repairing are stable by once (as shown in Figure 10 to Figure 17). equally, as selected to adopt non-fused artificial intervertebral disk, the artificial intervertebral disk that the load bone fusion device of intervertebral bone graft is then replaced by a kind of combined type is (interior for spherical-concave-surface joint, sphere is metal, concave surface is macromolecule polymer material, for existing general artificial joint process materials), select same size, still insert as sending into drawer, but when non-fused art formula, will be replaced by the positive/negative thread nut bolt of longitudinal both sides with coupling of track steel plate in advance is plug-type movable connection method, after artificial intervertebral disk inserts and puts in place, remove the nut bolt of bilateral, namely complete to implant.This mode defines the two-way mechanics integral module of three dimensions. In fusion mode, the laying of track steel plate is except the soleplate that two track strip steel (namely going up insertion section 2 and lower insertion section 7) embed bilateral, steel plate separately has two pieces of cancellous bone screws to enter vertebral cancellous bone, form strong efficient support power region, make the support force of spongy bone under the soleplate of double track basis be changed into track steel plate L-type and become the support force of angular position metal to be greatly enhanced. Upper and lower L-type track steel plate is after the longitudinal bolt of bilateral is connected, control the distracting force that vertebral body produces to resist mutually with spinal column axial load, narrow intervertebral space is made to efficiently separate expansion, make committed step that the decompression of spinal cord to have possessed sight line good under direct-view, after having reduced pressure, the disc height expanded under resting state, namely it is dissect adaptive accurate data, directly choose the Intervertebral disc fusion device being precisely suitable for, just like the plug-type mode of drawer, it is sent directly into, closing just as drawer, accurately put in place, namely complete the process implanted. Now, the axial load load-bearing that spinal column is daily, then the intervertebral metal bone grafting fusion cage inserted by drawer completely undertakes, therefore the carrying producing the bilateral stud of axial distracting force supports and effectively shared, and the probability of its metal fatigue fracture is almost nil. Simultaneously, owing to being integrally attached to, all around, upper and lower three dimensions are all fixed, active force offsets, and as no matter bone grafting fusion cage sinks to vertebral body up or down, then can be produced pulling force by the other end and effectively be limited, form good stablizing, and reach desirable steady statue, clearly it is effectively prevented the generation of the complication such as loosening, dislocation, sinking, until Bony union. Equally, as selected non-fused artificial disc after arthroplasty to implant, then change axially adjustable for the bilateral positive/negative thread bolt strutted into detachable mode, after having strutted thoroughly decompression, the prosthese of adaptation is dissected in choosing completely, drawer type inserts location, and after snap-lock between track interface, remove bi-lateral support bolt, artificial disc after arthroplasty can produce flexion movement (front and back), simultaneously left and right, substantially stabilized up and down, reaches the steady statue that current manual's cervical intervertebral disk is best, effectively avoids prothesis dislocation, the complication of sinking occurs.

Anterior plate fixation, it has been that worldwide medical device implants supervision department in various countries' generally ratifies in one of clinical widely used spinal column implants at present, with anterior plate fixation for basic structure, one end is cervical steel plate pattern, the other end is extend the considerable of hollow along steel plate both sides, and in position in 90 ° of bendings, its considerable cross section is trapezoidal triangle, centre has fin 3 to form ladder type triangle, tip (i.e. the upper end of Fig. 3 to Fig. 5) can embed soleplate, and fin 3 is fitted and is fixed on endplate surface trapezium structure track after soleplate. the L-shaped track steel plate of the same track of two panels is relative, outside fix (or plug-type) two ends positive/negative thread nut bolt and be connected with steel plate, and the four-footed of 90 ° of bendings is relatively (as shown in Figure 1). during implantation, first four-footed track (upper insertion section 2 and lower insertion section 7) is inserted the intervertebral space tentatively removing regression disc tissue, after putting in place, two ends steel plate can be fitted with conical surface, now, rotating both sides positive/negative thread bolt 11 then makes both sides steel plate (upper implant 1 and lower implant 7) separate, four-footed is close to upper and lower soleplate, after trapezoidal triangle tip embeds soleplate, rotation bolt 11 further, on steel plate, implant vertebral cancellous bone screw simultaneously, steel plate is made to fit tightly assurance vertebral body, conical surface is fixed at two ends, further rotate bilateral bolt, produce enough distracting force, the gap making regression narrow is returned to optimum state, as shown in FIG. 10 to 14.Namely this step is that implant dissects adaptive necessary step, is also decompression simultaneously, makes sight line enter deep, and clear view oppresses the steps necessary at spinal cord position to pathological changes. In current clinical practice, the two step is still separation; Current all of implants does not all possess the function appearing visual area. Therefore, this structure and conception, it is one of the clear and definite innovative point of this enforcement technology, two committed steps that visual area, deep and implants are implanted are combined; Another innovative point is predetermined trajectory, makes implant (bone grafting fusion cage 20 or cervical artificial disc 30) and post-decompression space and the precise height dissecting adaptation, combines closely. Simultaneously, the safe degree of depth and scope is defined by track, simultaneously because the occlusion of track, it is achieved that stable and fixing between interface, specify and intuitive and reliable eliminate loosening, displacement, dislocation, the hidden danger sunk, make the technical advantage of implants, having performed to unprecedented desired level, structure is simple and clear simultaneously, decreases raw steel plate and the area of cervical vertebra is completely covered, manufacturing process is uncomplicated, has clear and definite realizability intuitively.

The invention has the beneficial effects as follows:

The above, be only specific embodiments of the invention, it is impossible to limits, with it, the scope that invention is implemented, so the displacement of its equivalent assemblies, or the equivalent variations made according to scope of patent protection of the present invention and modification, all should still fall within the category that this patent is contained. It addition, all can independent assortment use between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, between technical scheme and technical scheme.

Claims

1. the implants for spinal decompression, it is characterized in that, the described implants for spinal decompression (10) includes upper implant (1) and lower implant (6), the bottom of upper implant (1) is provided with the upper insertion section (2) for inserting vertebra gap, the top of lower implant (6) is provided with the lower insertion section (7) for inserting vertebra gap, upper insertion section (2) and lower insertion section (7) can be inserted simultaneously into vertebra gap, the described implants for spinal decompression also includes making what upper implant (1) and lower implant (6) separated to strut assembly.

2. the implants for spinal decompression according to claim 1, it is characterized in that, upper implant (1) is in the form of sheets, upper insertion section (2) is positioned at the lower end of implant (1), upper insertion section (2) is vertical with upper implant (1), and upper insertion section (2) are strip or lamellar.

3. the implants for spinal decompression according to claim 1, it is characterized in that, the left and right sides of upper implant (1) lower end is equipped with insertion section (2), upper insertion section (2) is positioned at the lower end of implant (1), upper insertion section (2) is vertical with upper implant (1), upper insertion section (2) is column, the lower end of upper insertion section (2) is slide rail, and two upper insertion sections (2) are parallel to each other.

4. the implants for spinal decompression according to claim 1, it is characterized in that, the section configuration of upper insertion section (2) is top isosceles triangle upward or tip water-drop-shaped upward or inverted T-shaped or top to be isosceles triangle bottom upward, top be top upward trapezoidal.

5. the implants for spinal decompression according to claim 4, it is characterized in that, the both sides at middle part, upper insertion section (2) are equipped with bar shaped fin (3), fin (3) is arranged along the length direction of upper insertion section (2), in two fins (3) are generally aligned in the same plane.

6. the implants for spinal decompression according to claim 1, it is characterized in that, this struts assembly and includes being positioned at the upper adjustment barrel (4) of implant (1) left and right sides, it is positioned at the lower adjustment barrel (9) of lower implant (6) left and right sides and two screw rods (11), threaded with the upper adjustment barrel (4) in left side and the lower adjustment barrel (9) in left side respectively in the both sides of the screw rod (11) in left side, threaded with the upper adjustment barrel (4) on right side and the lower adjustment barrel (9) on right side respectively in the both sides of the screw rod (11) on right side, the thread rotary orientation on screw rod (11) top and the thread rotary orientation of screw rod (11) bottom are contrary, rotating two screw rods (11) can make implant (1) and lower implant (6) separate.

7. the implants for spinal decompression according to claim 1, it is characterized in that, this struts assembly and includes being positioned at the upper rack (12) of implant (1) left and right sides and be positioned at the lower tooth bar (13) of lower implant (6) left and right sides, the broached-tooth design of upper rack (12) in left side is engaged mutually with the broached-tooth design of the lower tooth bar (13) in left side, the broached-tooth design of upper rack (12) on right side is engaged mutually with the broached-tooth design of the lower tooth bar (13) on right side, upper rack (12) and lower tooth bar (13) overcoat are set up defences the sleeve (14) that only upper rack (12) and lower tooth bar (13) separate, this struts assembly and is only capable of and makes implant (1) and lower implant (6) unidirectional separation.

8. the implants for spinal decompression according to claim 1, it is characterised in that 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.

9. an Intervertebral disc fusion device, it is characterized in that, the upper surface of this Intervertebral disc fusion device (20) is provided with the upper hopper chute (21) that the upper insertion section (2) with the implants for spinal decompression described in any one in claim 1～8 matches, and the lower surface of this Intervertebral disc fusion device (20) is provided with the gliding groove (22) that the lower insertion section (7) with the implants for spinal decompression described in any one in claim 1～8 matches.

10. an artificial intervertebral disk, it is characterized in that, this artificial intervertebral disk (30) is containing female members (31) setting up and down and male member (32), the upper surface of this female members (31) is provided with the upper hopper chute (33) that the upper insertion section (2) with the implants for spinal decompression described in any one in claim 1～8 matches, and the lower surface of this male member (32) is provided with the gliding groove (34) that the lower insertion section (7) with the implants for spinal decompression described in any one in claim 1～8 matches.