CN106137473A - Lumbar vertebral posterior multi-functional Intervertebral disc fusion device - Google Patents

Lumbar vertebral posterior multi-functional Intervertebral disc fusion device Download PDF

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Publication number
CN106137473A
CN106137473A CN201610653645.4A CN201610653645A CN106137473A CN 106137473 A CN106137473 A CN 106137473A CN 201610653645 A CN201610653645 A CN 201610653645A CN 106137473 A CN106137473 A CN 106137473A
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support arm
nut
fusion device
intervertebral disc
shell
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CN106137473B (en
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邹德威
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7061—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant for stabilising vertebrae or discs by improving the condition of their tissues, e.g. using implanted medication or fluid exchange
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B2017/7073—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant with intervertebral connecting element crossing an imaginary spinal median surface

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Neurology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention provides a kind of lumbar vertebral posterior multi-functional Intervertebral disc fusion device, lumbar vertebral posterior multi-functional Intervertebral disc fusion device includes screw rod, can be rotated about axis, screw rod includes the first spiro rod section and the second spiro rod section, and the thread rotary orientation of the first spiro rod section and the second spiro rod section is contrary；Nut includes that the first nut and the second nut, the first nut and the first spiro rod section are threaded, and the second nut and the second spiro rod section are threaded；Support arm includes the first support arm and the second support arm, one end of first support arm is hinged with the first nut, one end of second support arm is hinged with the second nut, the other end of the first support arm and the other end of the second support arm is hinged or the other end of the first support arm by gripper shoe hinged with the other end of the second support arm；When screw rod rotates, the first nut and the second nut direction of motion are contrary, and the first support arm other end and the second support arm other end all can moving radially along screw rod.The present invention can reach to increase the purpose supporting volume.

Description

Lumbar vertebral posterior multi-functional Intervertebral disc fusion device
Technical field
The present invention relates to Intervertebral disc fusion device field, specifically a kind of lumbar vertebral posterior multi-functional Intervertebral disc fusion device.
Background technology
Use Intervertebral disc fusion device to carry out posterior decompression bone grafting, be last century Mo, the spinal surgery clinic beginning of this century The significant technological progress that practice and the basic research theory such as pathology, physiological mechanics combine." Intervertebral disc fusion device ", makees For axial carrying between vertebral body (body weight), expand the intervertebral space that the regression because of axial stress is narrow, make the upper and lower footpath of nerve root canal expand, Nerve root obtains decompression；As fixing device between interface, regression unstability spinal lesion sections is made to regain stable interior environment, Filling bone graft tissue therebetween and upper hypocentrum is made to reach Bony union.Clearly observe also from clinical practice due to above-mentioned The basic advantage fully proved by clinical pathology and biomechanical test, " Intervertebral disc fusion device " has become spinal surgery in the present age One of " sharp weapon " in doctor's hands, are worldwide widely used in clinic.
As an emerging spinal operation technology, in the practice in past 10 years, to it for the key of spinal column regression Pathology and Biomechanical factor, the most upright walking vertebrates, spinal column is axial because of be mainly made up of vertical stress for a long time Under load effect, the fatigue aging occurred, is to cause intervertebral disc degeneration, stenosis of disc space, ligament calcification, hyperosteogeny, bone The core of the various degeneratioies such as superfluous growth, nerve root canal is narrow, nervous tissue suffers oppression, intervertebral unstability, vertebral slip because of Element.Therefore, effectively to axial load resistant, it is the key of solution problem.
Based on this common recognition, the nineties in last century, Intervertebral disc fusion device (Interbody Fusion Cage) is in North America Begin for clinic.Be hollow cylindrical the earliest, be once referred to as BAK cage, after gradually develop into cuboid (hollow, solid all have), It effectively resists load, supports the narrow intervertebral space that subsides, and makes the acquisition of hard pressed nerve root loosen, stablize intervertebral space, profit In the good action of bone-graft fusion, clinical effectiveness confirmed.But problem the most thus highlights, mainly show as getting loose, dislocate, under Sink, rack soleplate entrance osseous tissue, thus cause various complication, cause operative failure.
Although Report of Complications is the most of common occurrence, but the application of " Intervertebral disc fusion device " is the most extensive.For avoiding Complication, in art, intervertebral implants fusion device, after effect tentatively manifests, then under affix in vertebra joint pedicle screw fixing etc. its Its technological means, reinforces further its acquired stability, prevents the movement of fusion device, dislocates, sinks, thus has to make Operation complicates, and risk increases, and economic cost raises.
Problems of the prior art are: existing be main flow structure with cuboid fusion device, enough Volume, too small with the area that upper and lower terminal plate of vertebral body (hone lamella face) contacts because of it, and as the bearing function to axial load resistant, aobvious And be clear to, area is the least, unit are pressure is the biggest.
But during owing to entering any one space being embedded in entity, it is necessary to through one " door ", and this " door Mouthful " permissibility of size, determine the size that can move into this space object.Human body, from rear and rear flank side, enters and sends out " core " position of raw pathological change, it is necessary to through bone vertebral arch, vertebral plate and the soft or hard that lower articular is dashed forward, ligament is constituted connected Alternate canalis spinalis and contain the important nervous tissue such as spinal nerves and nerve root.Therefore, this road door is allowed to pass through Gap is the narrowest and small, and careless slightly, i.e. can damage important neuromechanism.Visible, repair and be positioned at intervertebral space space Regression inefficacy intervertebral disc, and the energy required for supporting the supporter " fusion device " of the narrow intervertebral space that subsides meets the body of needs Long-pending, with the narrow and small passage that can allow that it passes through, produced contradiction, " focus " that the problem that defines is sharp-pointed.And " doorway " permits Permitted the maximum volume that passes through, and the minimum volume repaired in internal wide space required for pathological changes, there are still significance difference away from.
Prior art is done quantitative analysis: use average (anteroposterior diameter 40～45mm, footpath, left and right 50～65mm) to draw the mankind Vertebral body column cross section plane graph, for irregular ellipse, seeks its area.Area formula of circle A=π r2(r is radius), oval Area formula A=π ab (a, b are respectively long and short radius), because being irregular ellipse, thus the most inapplicable.Employing calculus is general Read, will be irregular oval with 5 × 5=25mm2Lattice covers, and there are 73 rule lattices, 34 imperfect lattices, then and 73 × 25=1825mm2, to remaining 34 disappearance grid pattern complementary, about obtain 20 lattice, then 20 × 25=500mm2, then vertebral body column Cross section surface area is about 73 × 25+20 × 25=2325mm2；Take mankind's disc height (10～15mm) average, then intervertebral Gap spatial volume is: 2325 × 12=27900mm3.Use " Intervertebral disc fusion device " general aspect cuboid average at present, ask Obtain cuboid upper or lower surface to amass: the long 25mm of cuboid, wide 10mm, high 6mm, then surface area 25 × 10=250mm2, volume 250 × 6=1500mm3, substitute into its residing interior environment intervertebral space, then account for area percentage 250 ÷ 2325 ≈ 11%, account for volume hundred Proportion by subtraction 1500 ÷ 27900 ≈ 5.4%.
By quantitative analysis, although from result it is clear that " fusion device " has become spinal surgeons today One of " sharp weapon " in hands, but fusion device of the prior art is in the three dimensions on the ground of pathological changes core, and Area of bearing only accounts for About 11%, and volume is especially less than 6%.Because overall support area is too small, then unit are pressure inevitably enlarges, therefore racks bone Plate enters vertebral body and sinks or the bodily form is too small and loose or dislocation, becomes the complication being difficult to avoid that all the time.More due to its morphosis Be only hollow or solid cuboid solid-state, in addition to the spinal column axial load that hypocentrum on support bearing is transmitted, for because of Intervertebral space loosens and makes " lumbar spondylolisthesis " of hypocentrum generation transverse shift, and cannot play any antagonism horizontal sliding, rectifys Positive deformity is allowed to the strength resetted.And fusion device technology now, the too much surface micropore that is stranded in processes, to increasing and connecing The contact of contacting surface bone and its cells level and reduce stiffness with flexible material, and reduce sinking and clamp-on osseous tissue.
Summary of the invention
For the deficiency that the support volume overcoming existing Intervertebral disc fusion device is too small, the invention provides a kind of lumbar vertebra The way of escape multi-functional Intervertebral disc fusion device, to reach to increase the mesh of lumbar vertebral posterior multi-functional Intervertebral disc fusion device support volume 's.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multi-functional Intervertebral disc fusion of lumbar vertebral posterior Device, this lumbar vertebral posterior multi-functional Intervertebral disc fusion device includes: screw rod, it is possible to be rotated about axis, this screw rod includes the first screw rod Section and the second spiro rod section, the thread rotary orientation of the first spiro rod section and the second spiro rod section is contrary；Nut, including the first nut and the second spiral shell Mother, the first nut and the first spiro rod section are threaded, and the second nut and the second spiro rod section are threaded；Support arm, including first Support arm and the second support arm, one end of the first support arm is hinged with the first nut, one end of the second support arm and the second nut Hinged, the other end of the first support arm and hinged or the first support arm the other end of the other end of the second support arm pass through gripper shoe Hinged with the other end of the second support arm；When this screw rod rotates, the direction of motion of the first nut and the second nut is contrary, and first The other end of support arm and the other end of the second support arm all can moving radially along this screw rod.
Further, the first support arm is two, two the first support arm line symmetries centered by the axis of this screw rod Being arranged on the both sides of the first nut, the second support arm is two, two the second support arm lines pair centered by the axis of this screw rod The both sides being arranged on the second nut claimed.
Further, when the other end that the other end of the first support arm passes through gripper shoe and the second support arm is hinged, Fagging is two, is positioned at the other end of first support arm of this screw rod the same side and the other end of the second support arm all with same Gripper shoe is hinged.
Further, lumbar vertebral posterior multi-functional Intervertebral disc fusion device also includes two end frames, two end frames Parallel interval is arranged, and each end frame is provided with rotational support hole, and one end of the first spiro rod section is arranged on two ends In the rotational support hole of an end frame in support, it is another that the other end of the second spiro rod section is arranged in two end frames In the rotational support hole of one end frame, this screw rod can rotate relative to end frame.
Further, the first nut and the second nut between two end frames, gripper shoe include contraction state and Holding state, when this contraction state, the inner surface of gripper shoe abuts with the end face of end frame, when this holding state, Fagging and end frame interval are arranged.
Further, the first nut and the second nut mirror image each other, the first support arm and the second support arm mirror image each other, two Individual end frame mirror image each other, two end frames are parallel to each other.
Further, when the other end of the first support arm and the other end of the second support arm are hinged, the first support arm One end is parallel with this screw axis with one end line of the second support arm, and this support arm includes receiving state and anchoring states, when When this support arm is in receiving state, the first support arm is parallel with the second support arm, when this support arm is in anchoring states, the The distance of the one support arm other end and this screw axis is more than the distance of first support arm one end with this screw axis.
Further, this lumbar vertebral posterior multi-functional Intervertebral disc fusion device also includes shell, two opposing sidewalls of shell On be provided with peristome, when this support arm is in this receiving state, outside the first support arm and the second support arm are all placed in In shell, when this support arm is in anchoring states, the other end of the first support arm and the other end of the second support arm can pass This peristome is placed in the outside of shell.
Further, this lumbar vertebral posterior multi-functional Intervertebral disc fusion device also includes supporting case, and this supporting case includes upper casing Body and lower house, upper shell and lower house section configuration are concave shape, and upper shell is fastened and connected with lower house, the end of this screw rod Portion is positioned at outside shell and this supporting case, and shell is placed in supporting case, and when shell rotates relative to supporting case, shell can promote Upper shell moves relative to lower house and makes this supporting case be changed into, by contraction state, the expansion state that girth becomes big.
Further, upper shell and lower house are provided with open slot, when this supporting case is in contraction state, this Brace is in this receiving state, and housing tilt is arranged, the line of two these peristomes of shell and the diagonal weight of this supporting case Closing, when this supporting case is in this expansion state, this support arm is at anchoring states, and housing vertical is arranged, opening of shell Oral area and this open slot one_to_one corresponding, the other end of the first support arm and the other end of the second support arm can be placed in this supporting case Outside.
The invention has the beneficial effects as follows, the first support arm and the second support arm are set, and make the other end of the first support arm With the other end of the second support arm when this screw rod rotates can moving radially along this screw rod, thus ensure that this lumbar vertebral posterior is many Function Intervertebral disc fusion device can be expanded after entering into setting position with small size, thus it is many to reach to increase lumbar vertebral posterior Function Intervertebral disc fusion device supports the purpose of volume.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention shows Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation that first embodiment of the invention is in contraction state；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structural representation that first embodiment of the invention is in holding state；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the partial structurtes schematic diagram that second embodiment of the invention is in receiving state；
Fig. 6 is the partial structurtes schematic diagram that second embodiment of the invention is in anchoring states；
Fig. 7 is that second embodiment of the invention is equipped with shell and is in the partial structurtes schematic diagram of receiving state；
Fig. 8 is the integrally-built left view that second embodiment of the invention is in contraction state；
Fig. 9 is the integrally-built left view that second embodiment of the invention is in expansion state；
Figure 10 is the three dimensional structure schematic diagram that second embodiment of the invention is in contraction state；
Figure 11 is the three dimensional structure schematic diagram that second embodiment of the invention is in expansion state.
Reference in figure: 11, the first spiro rod section；12, the second spiro rod section；21, the first nut；22, the second nut；31、 First support arm；32, the second support arm；4, gripper shoe；5, end frame；6, shell；71, upper shell；72, lower house；73、H Type support.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1 to 11, embodiments provide a kind of lumbar vertebral posterior multi-functional Intervertebral disc fusion device, should Lumbar vertebral posterior multi-functional Intervertebral disc fusion device includes: screw rod, nut and support arm.Screw rod can be rotated about axis, this screw rod Including the first spiro rod section 11 and the second spiro rod section 12, the first spiro rod section 11 is contrary with the thread rotary orientation of the second spiro rod section 12.Nut Including the first nut 21 and the second nut 22, the first nut 21 is threadeded with the first spiro rod section 11, the second nut 22 and second Spiro rod section 12 is threaded.Support arm includes the first support arm 31 and the second support arm 32, one end of the first support arm 31 and the One nut 21 is hinged, and one end of the second support arm 32 is hinged with the second nut 22, the other end of the first support arm 31 and second Hinged or the first support arm 31 the other end of the other end of brace 32 is cut with scissors by the other end of gripper shoe 4 and the second support arm 32 Connect.When this screw rod rotates, the direction of motion of the first nut 21 and the second nut 22 is contrary, the other end of the first support arm 31 and The other end of the second support arm 32 all can moving radially along this screw rod.
First support arm 31 and the second support arm 32 is set, and makes the other end and second support arm 32 of the first support arm 31 The other end when this screw rod rotates can moving radially along this screw rod, thus ensure the multi-functional intervertebral bone graft of this lumbar vertebral posterior Fusion device can be expanded after entering into setting position with small size, thus reaches to increase the multi-functional intervertebral bone graft of lumbar vertebral posterior Fusion device supports the purpose of volume.It addition, in FIG, it is provided for rotating the six of this screw rod in the left end of the first spiro rod section 11 Dihedral endoporus, is provided for rotating the hexagonal internal bore of this screw rod in the right-hand member of the second spiro rod section 12.
Above technical characteristic is the total technical characteristic of the present invention, will illustrate according to specific embodiment below, but Above-mentioned total technical characteristic will not be described in great detail.
First embodiment:
As shown in Figures 1 to 4, in first embodiment of the invention, above-mentioned lumbar vertebral posterior multi-functional Intervertebral disc fusion device includes Gripper shoe 4, the other end of above-mentioned first support arm 31 is hinged with one end of gripper shoe 4, the other end of the second support arm 32 with The other end of fagging 4 is hinged.
First support arm 31 and the second support arm 32 are all hinged in gripper shoe 4 in order in gripper shoe 4 with When the other end of one support arm 31 and the other end of the second support arm 32 move, it is ensured that the movement of gripper shoe 4 is steady, meanwhile, the One support arm 31 and the second support arm 32 all can provide stable support force for gripper shoe 4, to guarantee after supporting location Stability of strutting system.
Specifically, as it is shown in figure 1, the first support arm 31 is two, two the first support arms 31 with the axis of this screw rod are The both sides being arranged on the first nut 21 that centrage is symmetrical.Second support arm 32 is two, and two the second support arms 32 are with this spiral shell The both sides being arranged on the second nut 22 that centered by the axis of bar, line is symmetrical.Gripper shoe 4 is two, is positioned at this screw rod the same side The other end of the first support arm 31 and the other end of the second support arm 32 are all hinged with same gripper shoe 4.
Above-mentioned two gripper shoe 4 all can be moved with the first corresponding support arm 31 and the second support arm 32, i.e. when When screw rod rotates, two gripper shoes 4 up and down shown in Fig. 1 all can be moved to Fig. 4 position by Fig. 2 position.
Lumbar vertebral posterior multi-functional Intervertebral disc fusion device in first embodiment of the invention also includes two end frames 5. Two end frame 5 parallel interval are arranged, and each end frame 5 is provided with rotational support hole, the one of the first spiro rod section 11 End is arranged in the rotational support hole of an end frame 5 in two end frames 5, and the other end of the second spiro rod section 12 is arranged In the rotational support hole of another end frame 5 in two end frames 5, this screw rod can be relative to end frame 5 turns Dynamic.
It should be noted that the section of above-mentioned end frame 5 is H-shaped, this end frame 5 width and gripper shoe 4 Width is identical, and the length of this end frame 5 is identical with the length of gripper shoe 4.
Above-mentioned first nut 21 and the second nut 22 between two end frames 5, gripper shoe 4 include contraction state and Holding state.When this contraction state, the inner surface of gripper shoe 4 abuts with the end face of end frame 5, when this holding state, Gripper shoe 4 and end frame 5 interval are arranged.
Preferably, the first nut 21 and the second nut 22 mirror image each other, the first support arm 31 and the second support arm 32 are each other Mirror image, two end frame 5 mirror images each other, two end frames 5 are parallel to each other.
During application first embodiment of the invention work, by multi-functional for the lumbar vertebral posterior in this embodiment Intervertebral disc fusion device It is placed in state shown in Fig. 1, i.e. initial condition.Multi-functional for the lumbar vertebral posterior of this state Intervertebral disc fusion device is implanted lumbar vertebra set Behind position, screw screw rod and make screw rod rotate.Oppositely oriented due to the first spiro rod section 11 and the second spiro rod section 12, when rotating, First nut 21 and the second nut 22 can move towards the center of screw rod, and the i.e. first nut 21 and the second nut 22 are transported in opposite directions Dynamic.Now, owing to the first nut 21 and the second nut 22 move, thus one end and second support arm of the first support arm 31 are driven One end of 32 is moved, and then makes the other end of the other end of the first support arm 31 and the second support arm 32 by gripper shoe 4 along screw rod Radial direction prop, as shown in Figure 3 and Figure 4.Now, the first support arm 31 and the second support arm 32 are each perpendicular to screw axis, and And first support arm 31 and the second support arm 32 all vertical with gripper shoe 4.
Second embodiment:
As shown in Fig. 5 to Figure 11, the other end of the first support arm 31 and the second support arm 32 in second embodiment of the invention The other end hinged.One end of first support arm 31 is parallel with this screw axis with the line of one end of the second support arm 32, should Support arm includes receiving state and anchoring states.When this support arm is in receiving state, the first support arm 31 and second supports Arm 32 is parallel, and when this support arm is in anchoring states, the distance of first support arm 31 other end and this screw axis is more than the One support arm 31 one end and the distance of this screw axis.
In this embodiment, state shown in Fig. 5 is receiving state, and state shown in Fig. 6 is anchoring states.When this screw rod rotates Time, the first nut 21 and the second nut 22 move towards the center of screw rod, one end and second of the first support arm 31 simultaneously One end of support arm 32 is close to each other, and the other end of the first support arm 31 and the other end of the second support arm 32 are towards shown in Fig. 5 Top move, i.e. move to state shown in Fig. 6.Now, the another end of the first support arm 31 and the other end of the second support arm 32 Forming anchored end, this anchored end is used for grappling two adjacent sections vertebrae.
Preferably, as it is shown in fig. 7, this lumbar vertebral posterior multi-functional Intervertebral disc fusion device also includes shell 6, the two of shell 6 Being provided with peristome in individual opposing sidewalls, when this support arm is in this receiving state, the first support arm 31 and second supports Arm 32 is all placed in shell 6, when this support arm is in anchoring states, and the other end of the first support arm 31 and the second support arm The other end of 32 can be placed in the outside of shell 6 through this peristome.The two ends of above-mentioned screw rod are placed in the outside of shell 6, and Can be driven screw rod rotating by instrument convenient to operate.
As shown in figs, this lumbar vertebral posterior multi-functional Intervertebral disc fusion device also includes supporting case, this supporting case bag Include upper shell 71 and lower house 72.Upper shell 71 and lower house 72 section configuration are concave shape, upper shell 71 and lower house 72 Being fastened and connected, the end of this screw rod is positioned at outside shell 6 and this supporting case, and shell 6 is placed in supporting case.When shell 6 is relative to propping up When support box rotates, shell 6 can promote upper shell 71 to move relative to lower house 72 and make this supporting case be changed by contraction state Big expansion state is become for girth.
It is provided with open slot on upper shell 71 and lower house 72.Contraction state in second embodiment of the invention is Fig. 8 Shown state, when this contraction state, this support arm is in this receiving state, and shell 6 is obliquely installed, two of shell 6 this open The line of oral area overlaps with the diagonal of this supporting case.When this support with when being in expansion state, shell 6 turns along clockwise order Move to position shown in Fig. 9, i.e. shell 6 is vertical with the upper surface of upper shell 71, the peristome of shell 6 and this open slot one a pair Should, the other end of the first support arm 31 and the other end of the second support arm 32 can be placed in outside this supporting case, as shown in figure 11.
It is additionally provided with in this supporting case in second embodiment of the invention and prevents shell 6 from continuing to turn after turning to vertical position Dynamic stopper section, this stopper section is arranged at open slot, for the sidewall clamping with shell 6.
It should be noted that the supporting case in this embodiment also includes H type support 73, this H type support 73 is arranged on upper casing Body 71 and the left and right sides of lower house 72, for upper shell 71 and lower house 72 are carried out slide-and-guide, prevent upper shell 71 He Lower house 72 departs from displacement in slip.
When lumbar vertebral posterior multi-functional Intervertebral disc fusion device in application second embodiment of the invention works, first by Fig. 8 Lumbar vertebral posterior multi-functional Intervertebral disc fusion device implantation vertebra bone setting position under shown state, treats that this lumbar vertebral posterior is multi-functional After Intervertebral disc fusion device is placed in setting position, rotation case 6 makes upper shell 71 and lower house 72 produce longitudinal sliding motion, it is achieved one Dimensional expansion is opened, as shown in Figure 9.Now, the peristome of shell 6 is corresponding with the open slot of supporting case, rotates screw rod, due to the first screw rod The thread rotary orientation of section 11 and the second spiro rod section 12 is contrary, and above-mentioned first nut 21 and the second nut 22 move towards pitch, Above-mentioned first support arm 31 and the second support arm 32 are stretched out by open slot, as shown in figure 11, now complete grappling.From above In description, it can be seen that the above embodiments of the present invention achieve following technique effect:
First support arm and the second support arm are set, and make the other end and the other end of the second support arm of the first support arm When this screw rod rotates can moving radially along this screw rod, thus ensure this lumbar vertebral posterior multi-functional Intervertebral disc fusion device with Small size can be expanded after entering into setting position, thus reach to increase lumbar vertebral posterior multi-functional Intervertebral disc fusion device and prop up The purpose that support body is long-pending.
The above, the only specific embodiment of the present invention, it is impossible to limit the scope that invention is implemented with it, so its equivalent The displacement of assembly, or the equivalent variations made according to scope of patent protection of the present invention and modification, all should still fall within what this patent was contained Category.It addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with All can use with independent assortment between technical scheme.

Claims (10)

1. a lumbar vertebral posterior multi-functional Intervertebral disc fusion device, it is characterised in that the multi-functional intervertebral bone graft of this lumbar vertebral posterior melts Clutch includes:
Screw rod, it is possible to be rotated about axis, this screw rod includes the first spiro rod section (11) and the second spiro rod section (12), the first spiro rod section (11) contrary with the thread rotary orientation of the second spiro rod section (12)；
Nut, including the first nut (21) and the second nut (22), the first nut (21) is threadeded with the first spiro rod section (11), Second nut (22) is threadeded with the second spiro rod section (12)；
Support arm, including the first support arm (31) and the second support arm (32), one end of the first support arm (31) and the first nut (21) hinged, one end of the second support arm (32) is hinged with the second nut (22), the other end and second of the first support arm (31) Hinged or the first support arm (31) the other end of the other end of support arm (32) passes through gripper shoe (4) and the second support arm (32) The other end is hinged；
When this screw rod rotates, the direction of motion of the first nut (21) and the second nut (22) is contrary, the first support arm (31) The other end of the other end and the second support arm (32) all can moving radially along this screw rod.
Lumbar vertebral posterior the most according to claim 1 multi-functional Intervertebral disc fusion device, it is characterised in that the first support arm (31) being two, what two the first support arms (31) line centered by the axis of this screw rod was symmetrical is arranged on the first nut (21) Both sides, the second support arm (32) is two, two the second support arm (32) settings that line is symmetrical centered by the axis of this screw rod Both sides in the second nut (22).
Lumbar vertebral posterior the most according to claim 2 multi-functional Intervertebral disc fusion device, it is characterised in that when the first support arm (31) the other end by the other end of gripper shoe (4) and the second support arm (32) hinged time, gripper shoe (4) is two, is positioned at The other end of first support arm (31) of this screw rod the same side and the other end of the second support arm (32) all with same gripper shoe (4) hinged.
Lumbar vertebral posterior the most according to claim 3 multi-functional Intervertebral disc fusion device, it is characterised in that the many merits of lumbar vertebral posterior Can also include that two end frames (5), two end frame (5) parallel interval are arranged by Intervertebral disc fusion device, each end is propped up Being provided with rotational support hole on frame (5), one end of the first spiro rod section (11) is arranged on an end in two end frames (5) In the rotational support hole of portion's support (5), the other end of the second spiro rod section (12) is arranged on another in two end frames (5) In the rotational support hole of end frame (5), this screw rod can rotate relative to end frame (5).
Lumbar vertebral posterior the most according to claim 4 multi-functional Intervertebral disc fusion device, it is characterised in that the first nut (21) And second nut (22) be positioned between two end frames (5), gripper shoe (4) includes contraction state and holding state, in these receipts During contracting state, the inner surface of gripper shoe (4) abuts with the end face of end frame (5), when this holding state, gripper shoe (4) with End frame (5) interval is arranged.
Lumbar vertebral posterior the most according to claim 3 multi-functional Intervertebral disc fusion device, it is characterised in that the first nut (21) With the second nut (22) mirror image each other, the first support arm (31) and the second support arm (32) mirror image each other, two end frames (5) Mirror image each other, two end frames (5) are parallel to each other.
Lumbar vertebral posterior the most according to claim 2 multi-functional Intervertebral disc fusion device, it is characterised in that when the first support arm (31) when the other end and the other end of the second support arm (32) are hinged, one end of the first support arm (31) and the second support arm (32) one end line is parallel with this screw axis, and this support arm includes receiving state and anchoring states, when this support arm is in During receiving state, the first support arm (31) is parallel with the second support arm (32), when this support arm is in anchoring states, and first The distance of brace (31) other end and this screw axis is more than the distance of the first support arm (31) one end with this screw axis.
Lumbar vertebral posterior the most according to claim 7 multi-functional Intervertebral disc fusion device, it is characterised in that this lumbar vertebral posterior is many Function Intervertebral disc fusion device also includes shell (6), and two opposing sidewalls of shell (6) are provided with peristome, at this When brace is in this receiving state, the first support arm (31) and the second support arm (32) are all placed in shell (6), in this support When arm is in anchoring states, the other end of the first support arm (31) and the other end of the second support arm (32) can pass this opening Portion is placed in the outside of shell (6).
Lumbar vertebral posterior the most according to claim 8 multi-functional Intervertebral disc fusion device, it is characterised in that this lumbar vertebral posterior is many Function Intervertebral disc fusion device also includes supporting case, and this supporting case includes upper shell (71) and lower house (72), upper shell (71) Being concave shape with lower house (72) section configuration, upper shell (71) is fastened and connected with lower house (72), the position, end of this screw rod Outside shell (6) and this supporting case, shell (6) is placed in supporting case, when shell (6) rotates relative to supporting case, and shell (6) Upper shell (71) can be promoted mobile relative to lower house (72) and make this supporting case be changed into girth by contraction state and become big Expansion state.
Lumbar vertebral posterior the most according to claim 9 multi-functional Intervertebral disc fusion device, it is characterised in that upper shell (71) Being provided with open slot with on lower house (72), when this supporting case is in described contraction state, this support arm is in this storage State, shell (6) is obliquely installed, and the line of two these peristomes of shell (6) overlaps with the diagonal of this supporting case, when this When support box is in this expansion state, this support arm is at anchoring states, and shell (6) is vertically arranged, the peristome of shell (6) Can be placed in this with this open slot one_to_one corresponding, the other end of the first support arm (31) and the other end of the second support arm (32) Outside support box.
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