CN206792523U - Backbone dypass intervertebral fixes fusion device - Google Patents

Abstract

The utility model provides a kind of backbone dypass intervertebral and fixes fusion device, and the backbone dypass intervertebral, which fixes fusion device, to be included：Housing and the inner bag being arranged in the housing；The end of the housing is provided with axis hole；The inner bag includes：The side wall of inner bag, the inner bag cavity formed by the side wall, the grappling nail bunker being arranged in the inner bag cavity, the retractable grappling nail being arranged in grappling nail bunker, in the inner bag cavity and the broken skeletal grain bunker being arranged on outside the grappling nail bunker and the rotating shaft being arranged on the grappling nail bunker；Wherein, the rotating shaft is arranged in the axis hole, and the rotating shaft connects the grappling and follows closely and drive the grappling to stretch.The utility model carries out direct reduction in intervertenral space shaft core position, to the centrum of gliding dislocations；Effective filling to concave plane arched roof depression dead space；To in the preceding tall and big reconstruction and effectively maintenance in rear high coffin of physiological bending section intervertenral space.

Description

Backbone dypass intervertebral fixes fusion device

Technical field

It the utility model is related to medical instruments field, and in particular to the Intervertebral disc fusion device in intervertebral disc operation, it is special It is not that a kind of backbone dypass intervertebral fixes fusion device.

Background technology

Last century Mo, the beginning of this century, century intersect, the field of spinal surgery of quiet thousand, no matter from operative approach and more The surgical technic of discipline development achievement integrated application, just like " blowout " equally, present the progress across history.With to backbone The pathomechanism understanding of retrogression pathological changes deepens continuously, and Intervertebral disc fusion is substituting traditional posterolateral fusion, turns into " key element " for the satisfactory effect that succeeded to the operation of backbone regression reconstruction；And over time, by more and more treatments The satisfied case of effect is confirmed, and establishes its leading position in the operation of contemporary backbone prosthetic, and in the world Formed extensively common recognition, expedited the emergence of with this and constantly promotion approach Applied Anatomy further investigation and surgical technic progress.Multiple types The Intervertebral disc fusion device of type is received by clinician and starts largely to become the backbone weight for making regression unstability in clinical practice The important component of the new physiological function for recovering stable support structure.

Certainly, the progress of Morphological And Anatomical, functional anatomy and sport biomechanics multiple-discipline comprehensive research, fully The backbone as the post of human bearing and the beam of software motion is confirmed, its aging regression both originates from " moving " and the combination of " quiet " Point, i.e., articulation structure-interverbebral disc between each bone vertebra section；And dominated without vascularity, impassivity, to regression and aging, It is not possess the function of repairing and regenerate completely；When regression, which is developed to, completely loses physiological function, narrow and loosening, displacement It is its inevitable final result；And now caused because unstability causes, the soft tissue of backbone surrounding is tired because of excessive stability maintenance, and generation is held Continuous property pain；When intraspinal tube nerve because the spur of hyperplasia (thorn) is oppressed and during caused sensorimotor obstacle, only operative reconstruction Disc height, the section of stable unstability, is only and recovers physiological function unique channel.

Clearly recognized although having to this causal inevitable logic, because vertebral column intervertebral joint interverbebral disc is in people There are a large amount of important internal organs in splanchnocoel in the special anatomical position of " " center ", " deep exist " residing for body, front, and bilateral is human body The widest part and the wrapping of substantial amounts of muscular soft tissues, and only back peels off back flesh by ridge along midline incision along spinous process to both sides Group, and reach the rear part edge structural bone vertebral plate and bilateral facet joint of backbone.Reach interverbebral disc, it is necessary to again by vertebral plate, Facet joint, spinal nerve and nerve root, also, be only capable of using the spinous process of center line stringer as line of demarcation, enter from side.Because of spinal cord The barrier of nerve fiber, can only be careful appropriate free by it and be softly retracted, and very careful is protected by.Therefore, it is inevitable Also can only be a narrow and small passage；It is obvious, from Posterior approach, the removing of the disc tissue of function is either lost to regression, Or the shaping to proportional space on mechanics, until the implantation of the fusion device of enough volumes, makes it be fixed between giving full play to interface And effective support function, all will be difficult process.And in putting into practice, thousands of spinal surgeons, in existing skill On the premise of art condition and apparatus are basically identical, the workmanship of itself can only be leaned on to overcome difficulties, supply a gap.Therefore, curative effect Can not possibly be impartial consistent.It is such just like theoretical logic, as a result necessarily there are significant otherness and many complication.

Research has shown that：From the fusion device of the maximum possible volume of way of escape side implantation, as single solid, its volume deficiency The 1/10 of intervertenral space space, therefore, fixed and load sharing backbone axial load effect between interface on mechanics, and extremely have Limit, and often have to from opposite side, capable dissection appears entrances again, pair piece fusion devices are placed, so as to increase operating time, wind Danger and economic cost, especially to there is the lesion of position changing of the relative positions unstability, such as " spondylolishesis ".So far, Invasive lumbar fusion device is complete It is complete not possess the function of resetting and fix, and to the patient that " spondylolishesis " has to perform the operation, complicated hand can only be also used so far Art, fully appeared by posterior approach, and complete at least 4 pieces of pedicle screw implantation, machine is carried out by screw tail end extension connecting rod Tool operates, and lifts the centrum of sliding backward, makes its reset, then, then by the way of escape is implanted into fusion device, is resetted in pedicle screw solid Determine and then realize intervertebral fusion.And in fact, the generation of all gliding dislocations of spinal vertebral, exactly originating from intervertenral space It is the regression of interverbebral disc, loosening, narrow, but due to its anatomical structure feature, so far still without can be real in the cradle source of problem Apply maximally effective direct reduction and support fixed apparatus and technology path, and have to seek something far and wide when it is within reach.Away from slippage axle center Rear outside, by diameter 2-3mm tubuloses pedicle of vertebral arch only bigger than pedicle screw, screw is pierced to the centrum in front, this operation Process, making the target outside hundred meters like a shooter, it is necessary to which rifle rifle bull's eye, bullet bullet hit the bull's-eye, slightly slipped up, screw It can break out, injure the spinal nerve or anterolateral big blood vessel and internal organs of inner side, so constantly test 1,100 doctor's skills Art and the courage for challenging each patient.At least four pieces of screws are only fixed, the centrum of gliding dislocations can just be lifted, be multiple Position, has dislocation like two layers between high building, is not to be directed at axle center from inside center, realizes axial replacement and fixation, and in periphery built Son, push away, draw, aliging and fix again equally.

The origin of problem is already clear and definite, the Morphological And Anatomical position of the upright walking spinal animals of genetic evolution in 1,100, The very long period of the relative constancy of the survival of the fittest has been in evolutionism and can not have been changed, that key point for solving problem can only It is how smoothly to reach the axle center of backboneEven if the way of escape by both hands dexterous again, can only also create one it is limited narrow and small Passage (diameter about 15mm), preceding road will by thoracic cavity, all multi visceras in abdominal cavity, perform the operation very just like " belly breaking ".It is although modern Surgical technic has been nothing difficult to this, but in fact, for as doctor and patient, is in unless haveing no alternative but, typically not for it (Excision of Malignant Tumors of such as spinal vertebral)；And body both sides (double outsides) is the maximum transverse diameter in human body ellipse cross section, tool There is the longest distance from body surface to axle center, although internal structure is only the muscle layer of multiple-layer stacked, no important organ and blood vessel, because It is most long for path, even up to more than 20cm.Therefore, body surface need to do long otch, and successively separate abundant muscle, be " huge wound ", and it is general also not for it；Therefore the spinal operation in the whole world more than 80%, still continue to use traditional Posterior approach.

The beginning of this century, from minimally invasive precision strike " targeted elimination " tactics precisely performed the operation of modern surgery in modern war In successfully apply, further promote the development of accurate surgical technic in turn.Percutaneous dypass small otch (2cm) straight channel Through muscle layer, the side for reaching backbone lumbar vertebrae is directly entered the technology of interverbebral disc.

But at present, the operation that interverbebral disc vertebra is directly entered from side lacks effective apparatus.

Utility model content

The utility model provides a kind of backbone dypass intervertebral and fixes fusion device, is from body side approach, directly reaches ridge Post side and the operation offer apparatus guarantee for entering intervertenral space.

Therefore, the utility model proposes a kind of backbone dypass intervertebral to fix fusion device, the backbone dypass intervertebral, which is fixed, to be melted Clutch includes：Housing and the inner bag being arranged in the housing；

The end of the housing is provided with axis hole；

The inner bag includes：The side wall of inner bag, the inner bag cavity formed by the side wall, it is arranged in the inner bag cavity Grappling nail bunker, the retractable grappling nail being arranged in grappling nail bunker, in the inner bag cavity and set The broken skeletal grain bunker outside bunker and the rotating shaft being arranged on the grappling nail bunker are followed closely in the grappling；

Wherein, the rotating shaft is arranged in the axis hole, and the rotating shaft connects the grappling and follows closely and drive the anchor It is fixed flexible.

Further, the number of the grappling nail bunker is two, respectively the first grappling nail bunker and the second grappling nail Bunker, two grappling nail bunkers are separately positioned on the both ends of the inner bag cavity, are provided with each grappling nail bunker One upper shed and a under shed, each grappling, which is followed closely in bunker, is provided with a up anchor that can stretch out the upper shed Fixed nail, each grappling, which is followed closely, is additionally provided with the descending grappling that can stretch out a under shed nail, the up anchor in bunker Fixed nail and descending grappling nail are located at the both sides of the rotating shaft respectively, and the rotating shaft connects simultaneously and drives the up grappling Nail and descending grappling nail.

Further, the housing is rectangle framework, and the number of the axis hole is two, respectively the first axis hole and the Two axis holes, the first axis hole and the second axis hole are separately positioned on two relative sides of the rectangle framework, the rotating shaft Through two grappling nail bunkers and first axis hole and the second axis hole are stretched out, the rotating shaft is gear with grappling nail Transmission.

Further, the rotating shaft includes：The first paragraph rotating shaft of protruding first axis hole, positioned at first anchor Surely the second segment rotating shaft in bunker, the 3rd section of rotating shaft in second grappling nail bunker, protruding described second are followed closely The 4th section of rotating shaft and the interlude rotating shaft in the broken skeletal grain bunker of axis hole, wherein, first paragraph rotating shaft, second segment Rotating shaft, interlude rotating shaft, the 3rd section of rotating shaft and the 4th section of rotating shaft are sequentially connected, wherein, the end of the first paragraph rotating shaft and The end of four sections of rotating shafts is provided with bayonet socket, and the lateral surface of the second segment rotating shaft and the 3rd section of rotating shaft is provided with teeth, described Grappling is nailed on provided with rack.

Further, two relative sides of the rectangle framework are provided with the open slot extended up and down.

Further, each side is provided with two open slots, respectively the first open slot and the second open slot, institute The top margin that the first open slot stretches out each side is stated, second open slot stretches out the bottom of each side Side.

Further, the open slot is circular arc.

Further, the bayonet socket is interior hexagon.

Further, the length direction of the parallel rectangle framework of the setting direction of the rotating shaft.

Further, the end of each grappling nail is the piercing portion that can hammer into vertebra centrum.

The utility model carries out direct reduction in intervertenral space shaft core position, to the centrum of gliding dislocations；To concave plane Effective filling of arched roof depression dead space；To in the preceding tall and big reconstruction in rear high coffin of physiological bending section intervertenral space and Effectively maintain.

The utility model is a kind of from body side approach, directly reaches backbone side and enters the intervertebral fusion of intervertenral space Device, by simple operations, realize and to the centrum direct reduction of slippage and support fixation at intervertenral space core position, realize to centrum Effective filling support of soleplate fornices depression, realize that reconstruction lower lumbar spine physiological bending is preceding tall and big in rear high intervertenral space, realize Hypocentrum, the small otch approach of only one, once-through operation, you can complete are directly vertically fixed in intervertenral space middle section load-bearing axle center Into reset, balance and stability, existing pedicle screw system and its complicated excessive risk, the modus operandi of high cost are compared to, is had Have a clear superiority.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram that backbone dypass intervertebral of the present utility model fixes fusion device, wherein, at grappling nail In not extending out state；

Fig. 2 is the dimensional structure diagram that backbone dypass intervertebral of the present utility model fixes fusion device, wherein, at grappling nail In the state of stretching；

Fig. 3 is the dimensional structure diagram of housing of the present utility model；

Fig. 4 is the dimensional structure diagram of inner bag of the present utility model；

Fig. 5 is the main structure diagram of housing of the present utility model；

Fig. 6 is the side structure schematic view of housing of the present utility model；

Fig. 7 is the overlooking the structure diagram of housing of the present utility model；

Fig. 8 is the main structure diagram of inner bag of the present utility model；

Fig. 9 is the side structure schematic view of inner bag of the present utility model；

Figure 10 is the overlooking the structure diagram of inner bag of the present utility model；

Figure 11 is Fig. 1 main structure diagram；

Figure 12 is Fig. 1 overlooking the structure diagram；

Figure 13 is Fig. 2 main structure diagram；

Figure 14 is Fig. 2 overlooking the structure diagram；

Figure 15 is rotating shaft and the drive connection schematic diagram of grappling nail；

Figure 16 is in intervertenral space regression stenotic lesion position, is implanted into backbone dypass intervertebral of the present utility model and fixes fusion device The structural representation tentatively supported afterwards；

Figure 17 is the structural representation that inner bag of the present utility model rotates rear support intervertenral space；

Figure 18 is the structural representation that grappling nail stretches out the main view direction for hammering into hypocentrum on vertebra；

Figure 19 is that grappling nail stretches out the structural representation for hammering into the side-looking direction of hypocentrum on vertebra.

Drawing reference numeral explanation：

The inner bag of 1 housing 3

The side plate of 11 first 12 second the 3rd side plate 14 of side plate 13 of side plate the 4th

The open slot of 111 first axis hole, 131 second axis hole, 113 first open slot 115 second

The grappling of the 30 side wall 31 first nail bunker 32 second grappling nail broken upper shed of 34 rotating shaft of skeletal grain bunker 37 of bunker 33 39 mounting holes

341 first paragraph rotating shaft, 342 second segment rotating shaft the 3rd section of 345 interlude rotating shaft 343 the 4th section of rotating shaft 344 rotating shaft

3410 bayonet sockets

3420 teeth (sawtooth)

The 351 up descending grappling nails of grappling nail 352

The rack of 3510 rack 3520

The vertebra centrum of 51 vertebra centrum, 52 intervertenral space 53

Embodiment

In order to which the technical characteristics of the utility model, purpose and effect are more clearly understood, now control illustrates The utility model.

As shown in Figure 1, Figure 2, shown in Figure 16, Figure 17, Figure 18 and Figure 19, the utility model proposes a kind of backbone dypass intervertebral to fix Fusion device, the backbone dypass intervertebral, which fixes fusion device, to be included：Housing 1 and it is arranged in the housing and can be moved in housing transfer 90 degree of inner bag 3；Inner bag can do 90 ° turn clockwise after it is upright, intersect cross in 90 ° with housing 1；

The end of the housing is provided with axis hole；

As shown in Figure 1, Figure 2 and Figure 4, the inner bag 3 includes：The side wall 30 of inner bag, the inner bag formed by the side wall are empty Chamber, the grappling being arranged in inner bag cavity nail bunker, the retractable grappling nail being arranged in the grappling nail bunker, position In the inner bag cavity and the broken skeletal grain bunker 33 that is arranged on outside grappling nail bunker and it is arranged on the grappling nail Rotating shaft 34 on bunker；Broken skeletal grain loading will be transplanted until filling up broken skeletal grain bunker 33 using preceding；

Grappling nail bunker is, for example, rectangular cavity, and the sliding surface with double-side flat, grappling nail can be flat along face Flat sliding surface stretches out grappling nail bunker.

Wherein, the rotating shaft is arranged in the axis hole and stretches out axis hole, and the rotating shaft connects the grappling nail simultaneously The grappling is driven to stretch.

As shown in Figure 16, Figure 17, Figure 18 and Figure 19, during beginning, as shown in figure 16, by backbone dypass vertebra of the present utility model Between fix fusion device (abbreviation fusion device) and be implanted to intervertenral space regression stenotic lesion position, that is, be implanted to the vertebra centrum 51 on top In intervertenral space 52 between the vertebra centrum 53 of bottom, preliminary support intervertenral space 52 after fusion device implantation；Then rotating liner (for example, the end of inner bag has mounting hole 39, the rotary handle of column is provided with mounting hole 39, with tubular tool, inserts inner bag The internal rotation handle of two mounting hole 39, you can complete rotating liner), as shown in Figure 11, Figure 12, Figure 13, Figure 14 and 17,3 turns of inner bag It is dynamic 90 degree, narrow gap is further strutted, is reversely risen central after 90 ° of inner bag is upright, is adapted to the arched roof of mankind's intervertenral space (soleplate of human intervertebral disc base-upper hypocentrum, is not surface plate, but recessed arched roof is bent for recessed top and bottom Face.After inner bag of the present utility model is vertical, the dead space left after arched roof curved surface and plane contact can be sufficient filling with, and make broken skeletal grain Broken skeletal grain in bunker 33 fully contacts with upper and lower soleplate arched roof face, is more beneficial for Bony union.

Then, as shown in figure 18, being rotated further by rotating shaft 34 drives the grappling nail flexible, and grappling nail can follow closely bunker from grappling Middle stretching, upper hypocentrum is hammered into along four points of the backbone load-bearing axle heart, really realize that the axial direction since load-bearing axle core position is hung down It is straight fixed.As shown in figure 19, see, clearly show by after unilateral small approach of otch, between spinal segments after the completion of operation The axially vertical secure anchorage of 360 ° of balances and Multipoint Uniform distribution is reached.

Further, as shown in Figure 1 and Figure 4, the number of the grappling nail bunker is two, respectively the first grappling nail storage The grappling of storehouse 31 and second nail bunker 32, two grappling nail bunkers are separately positioned on the both ends of the inner bag cavity, mounting hole 39 also are located at the outer end of two grappling nail bunkers；

A upper shed 37 and a under shed (not shown) are provided with each grappling nail bunker, it is each described The up grappling that can stretch out a upper shed nail 351 is provided with grappling nail bunker, each grappling is followed closely in bunker also Provided with the descending grappling that can stretch out a under shed nail 352, multiple grappling nail bunkers, and each grappling are set Follow closely and two grapplings nails are provided with bunker, upper hypocentrum can be hammered into along four points of the backbone load-bearing axle heart, really realize from load-bearing axle The axially vertical fixation that core position starts；

As shown in Fig. 8, Fig. 9 and Figure 10, the up grappling nail and descending grappling nail are located at the two of the rotating shaft 34 respectively Side, and the rotating shaft 34 connects and drives the up grappling nail 351 and descending grappling nail 352 simultaneously so that up grappling Nail stretches out simultaneously with descending grappling nail, and so, up grappling nail and descending grappling nail stretching speed are fast, stretch out synchronous.

Further, as shown in Fig. 3, Fig. 5, Fig. 6 and Fig. 7, the housing 1 is rectangle framework, the number of the axis hole For two, respectively the first axis hole 111 and the second axis hole 131, first side plate 11 of the housing 1 by the connection that finishes up successively, the second side Plate 12, the 3rd side plate 13 and the 4th side plate 14 are formed, and the first axis hole and the second axis hole are separately positioned on the rectangle framework On two relative sides, the first axis hole 111 is arranged on the first side plate 11；Second axis hole 131 is arranged on the 3rd side plate 13, The rotating shaft is through two grappling nail bunkers and stretches out first axis hole and the second axis hole, to enable inner bag outside Rotated in frame 1, the rotating shaft 34 is gear drive with grappling nail, so that spaces compact.

Further, as shown in Fig. 9, Figure 10 and Figure 15, the rotating shaft 34 includes：The of protruding first axis hole One section of rotating shaft 341, positioned at first grappling follow closely bunker in second segment rotating shaft 342, positioned at second grappling follow closely bunker in The 3rd section of rotating shaft 343, protruding second axis hole the 4th section of rotating shaft 344 and in the broken skeletal grain bunker Interlude rotating shaft 345, wherein, first paragraph rotating shaft 341, second segment rotating shaft 342, interlude rotating shaft 345, the 3rd section of rotating shaft 343 It is sequentially connected with the 4th section of rotating shaft 344, wherein, the end of the end of the first paragraph rotating shaft and the 4th section of rotating shaft is provided with bayonet socket 3410, the lateral surface of the second segment rotating shaft 342 and the 3rd section of rotating shaft 343 is provided with teeth 3420, and the grappling nails on Provided with rack 3510.

Bayonet socket 3410 is used for the Relative anchor of drive shaft 34 nail bunker or the side wall 30 of inner bag rotates, and card is blocked using spanner Mouth 3410, the side wall 30 of the Relative anchor of rotating shaft 34 nail bunker or inner bag can be driven to rotate.Further, the bayonet socket 3410 is Interior hexagon, it is convenient to use to use common inner hexagon spanner.

As shown in figure 15, after rotating shaft 34 rotates, teeth 3420 or sawtooth in rotating shaft follow closely 351 tooth with up grappling simultaneously The rack 3520 of bar 3520 and descending grappling nail 352 engages, and drives the rack 3520 and descending grappling nail of up grappling nail 351 352 rack 3520 reversely translation simultaneously, so that up grappling nail 351 and descending grappling nail 352 stretch out simultaneously.In rotating shaft Teeth 3420 or sawtooth engage with the rack 3520 of up grappling nail 351 and the rack 3520 of descending grappling nail 352 simultaneously, save Space, can accomplish to kill two birds with one stone, reduce the setting of rotating shaft, and up grappling nail 351 and descending anchor are driven simultaneously realizing Surely nail 352 stretches out simultaneously under conditions of, space-consuming is reduced to greatest extent, reduces surgical wound.

Further, two relative sides of the rectangle framework are provided with the open slot that extends up and down, so as to Inner bag 3 will not mutually fasten when being rotated in housing 1 with housing.

Further, as shown in Fig. 3, Fig. 7, Figure 12, each side is provided with two open slots, and respectively first opens The mouth open slot 115 of groove 113 and second, first open slot stretch out the top margin of each side, second opening Groove stretches out the base of each side, facilitates the rotation of inner bag, or facilitate instrument to extend into the mounting hole of inner bag The rotary handle pulled mounting hole or pulled in mounting hole rotates.Further, the open slot is circular arc, to meet to rotate Needs.

Further, as shown in Fig. 9, Figure 10, Figure 14, the parallel rectangle framework of setting direction of the rotating shaft 34 Length direction, so that the radius of gyration is smaller.

Further, as shown in Fig. 2, Figure 13, Figure 14, the end of each grappling nail is that can hammer into vertebra centrum Piercing portion, quickly to hammer into upper hypocentrum.Piercing portion can be thread form.Grappling nail can use existing suitable grappling Nail.

The utility model is that can realize that inflatable, continuing axial support, multiple equilibrium, symmetrically axially vertical fixation is merged Device, rotating shaft, the grappling nail in inner bag stretch out simultaneously, hammer into upper hypocentrum along four points of the backbone load-bearing axle heart, really realization Axially vertical fixation since load-bearing axle core position.The realization of this mode, exceed 20 in clinical practice by thoroughly overturning Year, from backbone rear centrum both sides, it is parallel with backbone load-bearing axle again to enter laterally front centrum, screw tail end for pedicle Longitudinal metal rod, bar or " classics " fixed form of plate connection, and enormously simplify operation technique, significantly reduce difficulty with Risk, save economic cost.

The schematical embodiment of the utility model is the foregoing is only, is not limited to model of the present utility model Enclose.It can be mutually combined under conditions of not conflicting for each part of the present utility model, any those skilled in the art, Made equivalent variations and modification, it is new all should to belong to this practicality on the premise of design of the present utility model and principle is not departed from The scope of type protection.

Claims (10)

1. a kind of backbone dypass intervertebral fixes fusion device, it is characterised in that the backbone dypass intervertebral, which fixes fusion device, to be included：Outside Frame and the inner bag being arranged in the housing；

The end of the housing is provided with axis hole；

The inner bag includes：The side wall of inner bag, the inner bag cavity formed by the side wall, the anchor being arranged in the inner bag cavity Surely bunker, the retractable grappling nail being arranged in grappling nail bunker are followed closely, in the inner bag cavity and is arranged on institute State the broken skeletal grain bunker outside grappling nail bunker and the rotating shaft being arranged on the grappling nail bunker；

Wherein, the rotating shaft is arranged in the axis hole, and the rotating shaft connects the grappling and follows closely and drive the grappling to stretch Contracting.

2. backbone dypass intervertebral as claimed in claim 1 fixes fusion device, it is characterised in that the number of the grappling nail bunker For two, respectively the first grappling nail bunker and the second grappling nail bunker, two grappling nail bunkers are separately positioned on described The both ends of inner bag cavity, each grappling, which is followed closely in bunker, is provided with a upper shed and a under shed, each grappling nail The up grappling that can stretch out a upper shed nail is provided with bunker, an energy is additionally provided with each grappling nail bunker The descending grappling nail of the under shed is enough stretched out, the up grappling nail and descending grappling nail are located at the two of the rotating shaft respectively Side, and the rotating shaft connects and drives the up grappling nail and descending grappling nail simultaneously.

3. backbone dypass intervertebral as claimed in claim 2 fixes fusion device, it is characterised in that the housing is rectangle frame Body, the number of the axis hole is two, and respectively the first axis hole and the second axis hole, the first axis hole and the second axis hole are separately positioned on On two relative sides of the rectangle framework, the rotating shaft is through two grapplings nail bunkers and stretches out described first Axis hole and the second axis hole, the rotating shaft are gear drive with grappling nail.

4. backbone dypass intervertebral as claimed in claim 3 fixes fusion device, it is characterised in that the rotating shaft includes：To overhanging Go out first axis hole first paragraph rotating shaft, positioned at first grappling follow closely bunker in second segment rotating shaft, positioned at described second Grappling nail bunker in the 3rd section of rotating shaft, protruding second axis hole the 4th section of rotating shaft and positioned at the broken skeletal grain Interlude rotating shaft in bunker, wherein, first paragraph rotating shaft, second segment rotating shaft, interlude rotating shaft, the 3rd section of rotating shaft and the 4th section turn Axle is sequentially connected, wherein, the end of the end of the first paragraph rotating shaft and the 4th section of rotating shaft is provided with bayonet socket, the second segment rotating shaft Teeth are provided with the lateral surface of the 3rd section of rotating shaft, the grappling is nailed on provided with rack.

5. backbone dypass intervertebral as claimed in claim 3 fixes fusion device, it is characterised in that two of the rectangle framework Relative side is provided with the open slot extended up and down.

6. backbone dypass intervertebral as claimed in claim 5 fixes fusion device, it is characterised in that each side is provided with two Individual open slot, respectively the first open slot and the second open slot, first open slot stretch out the top of each side Side, second open slot stretch out the base of each side.

7. backbone dypass intervertebral as claimed in claim 5 fixes fusion device, it is characterised in that the open slot is circular arc.

8. backbone dypass intervertebral as claimed in claim 4 fixes fusion device, it is characterised in that the bayonet socket is interior hexagon.

9. backbone dypass intervertebral as claimed in claim 3 fixes fusion device, it is characterised in that the setting direction of the rotating shaft is put down The length direction of the row rectangle framework.

10. backbone dypass intervertebral as claimed in claim 1 fixes fusion device, it is characterised in that the end of each grappling nail Portion is the piercing portion that can hammer into vertebra centrum.