CN104644291A - Memory-based intervertebral fusion fixing device - Google Patents
Memory-based intervertebral fusion fixing device Download PDFInfo
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- CN104644291A CN104644291A CN201310581513.1A CN201310581513A CN104644291A CN 104644291 A CN104644291 A CN 104644291A CN 201310581513 A CN201310581513 A CN 201310581513A CN 104644291 A CN104644291 A CN 104644291A
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- carrier unit
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- intervertebral fusion
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Abstract
The invention provides a memory-based intervertebral fusion fixing device. The memory-based intervertebral fusion fixing device comprises a group of supports, and a molded spring; the group of supports comprises a plurality of support units; two adjacent support units are pivoted to each other, and the two adjacent support units are enabled to swing freely within an angle; the molded spring is connected with each support unit so that each support unit of the group of supports can be elastically unfolded and then is capable of sliding within a guide tube, and after sliding out of the guide tube, each support unit is returned into the original memory shape arrangement formed by the molded spring without external force. The memory-based intervertebral fusion fixing device is capable of supporting the vertebral body of a patient in a greater and more balanced manner, effectively avoiding the vertebral body from secondary injury and improving the fusion effect of two vertebral bodies; as a result, the fused two vertebral bodies are more steady.
Description
Technical field
The invention relates to a kind of intervertebral fusion fixture of memory-type, espespecially one is by formed spring, makes each joint carrier unit of this intervertebral fusion fixture, not by under External Force Acting, automatically can recover the spread geometry of memory originally.
Background technology
The vertebra of human body is made up of more piece vertebral body, separated between adjacent two vertebral bodys by intervertebral disc, supports each joint vertebral body by intervertebral disc, the nerve and blood vessel avoiding vertebral body to oppress diverging between vertebra; But, to move improperly, external force or because of the factor such as aging, often make two adjacent interpyramidal intervertebral disk hernia, cause adjacent two vertebral bodys approaching, be urged to nerve or blood vessel, the malaise symptoms such as make patient feel that acid is ached.
The method of this focus of current eliminating, great majority adopt intervertebral fusion operation, and it is after being removed by impaired intervertebral disc, in between two adjacent vertebral bodies of focus, implant the holder such as filling block or retaining frame, to support the spacing of two adjacent vertebral bodies, get rid of the focus such as pressuring nerve or blood vessel.
The fixed mounts such as above-mentioned existing adopted filling block or retaining frame, great majority are one-body molded, because existing holder is being installed, necessary effectively also balanced support vertebral body, therefore in application, must large-arealy be supported between two vertebral bodys, and the holder of this large volume must scratch the larger wound of patient when performing the operation and carrying out, just foot is implanted for it, causes that patient wound is comparatively large, postsurgical recovery shortcoming slowly.
Edge this, disclose a kind of fusion holder of Bendable at present, by bent characteristic, the conduit that can follow a bore less enters, and implant between two vertebral bodys, as U.S. patent application case discloses shown in No. US2011/0320000A1, be made up of the carrier unit (fusiondevice) of several mutual pivot joint, make can freely swing within the scope of certain angle between each carrier unit, by such structure, this fusion holder smoothly by conduit, can be implanted between two vertebral bodys, reach the object reducing wound, but, above-mentioned existing intervertebral confluence fixator, when implanting between two vertebral bodys along conduit, each joint carrier unit can be a linear array, therefore, this existing intervertebral confluence fixator only can slightly be placed between two vertebral bodys in a straight line is implanted, cannot the c-shaped or shape of a hoof be looped around on vertebral body, because this intervertebral confluence fixator is implanted in this vertebral body central authorities sponge bone region usually, and this sponge bone region is comparatively loose osseous tissue, when fusion fixator of vertebra be a straight line be positioned on one side time, the situation of local pressure can be caused, easily cause vertebral body again impaired, and manifest its shortcoming.
In view of this present inventor, is give research and innovation, discloses the intervertebral fusion fixture of illustrated memory-type.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the above-mentioned defect that prior art exists, and a kind of intervertebral fusion fixture of memory-type is provided, by formed spring, make each joint carrier unit of this intervertebral fusion fixture, under not being subject to External Force Acting, automatically the spread geometry of memory originally can be recovered, the vertebral body of patient can be obtained more greatly and the support more balanced, effectively avoid vertebral body again impaired, and promote two interpyramidal syncretizing effects, make two vertebral bodys after fusion more firm.
The technical solution adopted for the present invention to solve the technical problems is:
An intervertebral fusion fixture for memory-type, comprising: support group, containing several carrier unit, makes the mutual pivot joint of two adjacent carrier units, makes the carrier unit that two is adjacent, can freely swing in an angle; And formed spring, connect respectively this carrier unit, make each joint carrier unit of this support group without under External Force Acting, automatically the shaped formation [as C shape, the shape of a hoof or circle] of the script memory formed in this formed spring can be recovered, to bridge between two vertebral bodys, the vertebral body of affected part can be obtained more greatly and the support more balanced.
The intervertebral fusion fixture of disclosed memory-type, wherein this support group can be made up of the carrier unit of more than 2 or 2, respectively this carrier unit is respectively equipped with pivoted hole, to allow that a trunnion penetrates between two adjacent carrier units, make the two stands unit be mutually pivoted, according to the trunnion penetrated in this two stands unit, can freely swing in certain angle.
The intervertebral fusion fixture of disclosed memory-type, is wherein positioned at the carrier unit of this support group head joint, is provided with a convergence part, to be a joining rod linking accordingly; In addition, be positioned on the carrier unit of these support group minor details, be equipped with a rope hole, for placing a rope.
The intervertebral fusion fixture of disclosed memory-type, wherein forms each joint carrier unit of this support group, and the contact surface of itself and vertebral body, containing several lobe, to engage this vertebral body; Each joint carrier unit of this support group of above-mentioned formation, maybe can make the contact surface of itself and vertebral body, form the surface of the several micropore of tool, the aperture of each micropore can between 100 μm ~ 500 μm, after making operation in patients, freshman bone tissue can infiltrate in each micropore, to be closely combined with each joint carrier unit of this support group, obtains good syncretizing effect.
The intervertebral fusion fixture of disclosed memory-type, wherein this formed spring, can be line spring or flat spring, can be metal material or other is as the nonmetallic materials such as plastic material or composite, and the present invention also will not from limit.
The intervertebral fusion fixture of disclosed memory-type, wherein this formed spring, form at least a set of hole, for the pivot wearing the adjacent carrier unit of pivot joint two.The two ends of above-mentioned formed spring are free end, are defined as the first spring end and the second spring end, make this first spring end be placed through perforation that this support group is arranged in the carrier unit of first joint, and this second spring end is placed through the perforation that this support group is arranged in the carrier unit of minor details.
The intervertebral fusion fixture of disclosed memory-type, owing to forming each carrier unit of support group, just limited by this formed spring at ordinary times, and in a stable spread geometry, in the process that fusion is implanted, each joint carrier unit of this support group can launch on temporary elasticity ground, slightly in a linear array, insert in a conduit and slide towards between two vertebral bodys, after skidding off this conduit, each joint carrier unit is one by one because external force disappears, by the effect of formed spring, and recover " memory " spread geometry originally, such as c-shaped, the shape of a hoof or circle etc., because illustrated fusion fixture is at ordinary times, it can be a C shape, the shape of a hoof or circle, the contour shape of its shape rough coincided with human body vertebral body end face, therefore can bridge on a large scale in around vertebral body [around sponge bone region], but not extend across put on vertebral body in a straight line, the vertebral body of patient can be obtained more greatly and the support more balanced, effectively avoid vertebral body again impaired, and promote two interpyramidal syncretizing effects, make two vertebral bodys after fusion more firm, and aobvious novelty of the present invention and superiority.
The invention has the beneficial effects as follows, by formed spring, make each joint carrier unit of this intervertebral fusion fixture, not by under External Force Acting, automatically can recover the spread geometry of memory originally.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is exploded view of the present invention.
Fig. 2 is the axonometric chart of the present invention after combination.
Fig. 3 is the axonometric chart at another visual angle of the present invention.
Fig. 4 is the direction of 4-4 shown in Fig. 3 part section structural representation.
Fig. 5 is another embodiment of the present invention axonometric chart.
Fig. 6 is the partial enlarged drawing that Fig. 5 indicates " 16 ".
Fig. 7 is the conduit three-dimensional exploded view that the present invention applies.
Fig. 8 is disclosed conduit schematic perspective view.
Fig. 9 is display catheter proximal end guide plate of the present invention, stretches into two interpyramidal schematic diagrams in horizontal direction.
Figure 10 is after Fig. 9 rotates the outer tube of this conduit, struts the operation chart of two adjacent vertebral bodies spacing.
Figure 11 is that illustrated intervertebral fusion fixture implants two interpyramidal operation charts.
Intervertebral fusion fixture is implanted schematic diagram between two vertebral bodys from Figure 11 by Figure 12 completely.
Figure 13 is that illustrated intervertebral fusion fixture implants two interpyramidal view.
Number in the figure illustrates:
100 intervertebral fusion fixture 10 support groups
10a, 10b, 10c, 10d carrier unit 11 pivoted hole
12 rope hole, trunnion 13 convergence parts 14
Bore a hole in the surface 17 of the several micropore of 15 lobe 16
18 perforation 20 formed spring 21 trepannings
22 first spring end 23 second spring end 30 vertebral bodys
Casket led by 40 conduit 41 outer tubes 411
412 guide plate 42 action bars 421 spiro rod sections
422 handle portion 43 joining rod 431 shoulders
432 are connected screw rod W width H height
S rope
Detailed description of the invention
Refer to shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the invention relates to a kind of intervertebral fusion fixture 100 of memory-type, comprise: support group 10, containing several carrier unit 10a, 10b, 10c, 10d, make two adjacent carrier unit 10a and 10b, the mutual pivot joint of 10b and 10c, 10c and 10d, make carrier unit 10a and 10b, 10b and 10c or 10c and 10d that two is adjacent, can freely swing in an angle; And formed spring 20, connect respectively this carrier unit 10a, 10b, 10c, 10d, make each joint carrier unit 10a, 10b, 10c, 10d of this support group 10 without under External Force Acting, automatically the shaped formation [as C shape, the shape of a hoof or circle] of the script memory formed in this formed spring can be recovered, to bridge between two vertebral bodys, the vertebral body of affected part can be obtained more greatly and the support more balanced.
The intervertebral fusion fixture of disclosed memory-type, wherein respectively save carrier unit 10a, 10b, 10c, 10d and can make the metal material such as titanium or other is as composites such as carbon fibre, plastic cement, PEEK freely, the present invention also will not from limitting.
The intervertebral fusion fixture 100 of disclosed memory-type, wherein this support group 10 can by the carrier unit 10a of more than 2 or 2, 10b, 10c, 10d formed, respectively this carrier unit 10a, 10b, 10c, 10d is respectively equipped with pivoted hole 11, to allow that a trunnion 12 penetrates carrier unit [10a and the 10b in two neighbours respectively, 10b and 10c or 10c and 10d] between, make carrier unit [10a and the 10b be mutually pivoted, 10b and 10c or 10c and 10d], can according to penetrating in this two adjacent carrier unit [10a and 10b, 10b and 10c or 10c and 10d] trunnion 12, freely swing in certain angle.
As shown in Fig. 4, Fig. 5, Fig. 7 and Fig. 8, the intervertebral fusion fixture 100 of disclosed memory-type, wherein be positioned at the carrier unit 10a of this support group 10 head joint, be provided with a convergence part 13 (this convergence part can be screw or button hole etc.), being that a joining rod 43 is connected accordingly, the joining rod 43 be connected is saved by head, as shown in Figure 11, Figure 12, Figure 13, operatively by the present invention with the precalculated position [being generally sponge bone (spongy bone) region] between correct angle implant into body two vertebral body 30.
As shown in Figure 3, the intervertebral fusion fixture 100 of disclosed memory-type, on the carrier unit 10d of these support group 10 minor details, be equipped with a rope hole 14, in if desired, can for placing a rope, to draw this intervertebral fusion fixture 100 with the precalculated position between correct angle implant into body two vertebral body 30.
As shown in Fig. 2, Fig. 4, Figure 13, the intervertebral fusion fixture 100 of disclosed memory-type, wherein forms each joint carrier unit 10a, 10b, 10c, 10d of this support group 10, the contact surface of the vertebral body 30 of itself and vertebra, containing several lobe 15, to engage the vertebral body 30 be in contact with it; Each joint carrier unit 10a, 10b, 10c, 10d of this support group 10 of above-mentioned formation, also the contact surface of itself and vertebral body 30 can be made, as shown in Figure 5, Figure 6, form the surface 16 of the several micropore of tool, the aperture of each micropore can between 100 μm ~ 500 μm, and after making operation in patients, freshman bone tissue can infiltrate in each micropore, to be closely combined with each joint carrier unit 10a, 10b, 10c, 10d of this support group 10, obtain good syncretizing effect.Each joint carrier unit 10a, 10b, 10c, 10d of the several micropore surface of above-mentioned tool 16 can borrow 3D printing shaping mode one-body molded, 3D maybe can be borrowed to print and to fill up mode, on the surface 16 of each joint carrier unit 10a, 10b, 10c, 10d, form several micropore, the present invention is not from its manufacture of limit.
The intervertebral fusion fixture 100 of disclosed memory-type, wherein this formed spring 20, can be line spring or flat spring, can adopt metal material or other is as the nonmetallic materials such as plastic material or composite, and the present invention also will not from limit.
As Figure 1 and Figure 4, the intervertebral fusion fixture 100 of disclosed memory-type, wherein this formed spring, form at least a set of hole 21, for wearing the pivot 12 be articulated between two stands unit [10a and 10b, 10b and 10c or 10c and 10d].Above-mentioned formed spring 20 makes its two ends, in free end, be defined as the first spring end 22 and the second spring end 23, make this first spring end 22 be placed through perforation 17 that this support group 10 is arranged in the carrier unit 10a of first joint, this second spring end 23 is placed through the perforation 18 that this support group 10 is arranged in the carrier unit 10d of minor details.
As Fig. 1, shown in Fig. 2 and Fig. 3, the intervertebral fusion fixture 100 of disclosed memory-type, owing to forming respectively this carrier unit 10a of support group 10, 10b, 10c, 10d, just limited by this formed spring 20 at ordinary times, and in a specific spread geometry, in the process of intervertebral fusion Operation, as shown in the imaginary line of Fig. 4, each joint carrier unit 10a of this support group 10, 10b, 10c, 10d can launch slightly to be arranged in a linear in temporary elasticity ground, and then as shown in figure 11, insert in a conduit 40, vertebral body 30 towards vertebra slides, after skidding off this conduit 40, each joint carrier unit 10a, 10b, 10c or 10d is one by one because external force disappears, by the effect of formed spring 20, and recover script " memory " spread geometry [as C shape, the shape of a hoof or circle], as shown in figure 12, due to the contour shape of the rough coincided with human body vertebral body 30 of shape of the present invention, therefore can bridge on a large scale in around vertebral body [around sponge bone region], but not in a straight line bridge on vertebral body 30, the vertebral body 30 of patient can be obtained more greatly and the support more balanced, this is impaired more effectively to avoid vertebral body 30, and the syncretizing effect promoted between two vertebral bodys 30, make two vertebral bodys 30 after fusion more firm, and aobvious superiority of the present invention and novelty.
The present invention be applied to the conduit 40 of guiding intervertebral fusion fixture, as shown in Figure 7, Figure 8, comprise: an outer tube 41, the leading portion of this outer tube 41 contains leads casket 411, to allow that this intervertebral fusion fixture 100 is in interior slippage, another in the front end that this leads casket 411, project a guide plate 412, this guide plate 412 can be bowing; One action bars 42, containing a spiro rod section 421, this spiro rod section 421 is screwed together in the back segment of this outer tube 41, and is radially provided with handle portion 422 in this action bars 42, and to link, this action bars 42 rotates, and makes this action bars 42 can along this outer tube 41 axial displacement; And a joining rod 43, this action bars 42 is axially run through in its rear end, shoulder 431 is provided with in the stage casing of this joining rod 43, be resisted against the front end of this action bars 42, for this action bars 42 links displacement, separately be provided with a linking screw rod 432 in the front end of this joining rod 43, to screw togather the convergence part 13 that this support group 10 is positioned at first joint carrier unit 10a.When implant surgery is carried out, operator can be connected this intervertebral fusion fixture 100 by this joining rod 43, what make this intervertebral fusion fixture 100 be arranged in this outer tube 41 leads casket 411, when rotating this action bars 42, this intervertebral fusion fixture 100 can be passed in linkage and lead casket 411 towards intervertebral displacement along this outer tube 41.
As shown in Figure 8, above-mentioned conduit 40, wherein makes the width W of this guide plate 412 be greater than the height H of each joint carrier unit 10a, 10b, 10c or 10d of this intervertebral fusion fixture 100, when implant surgery is carried out, as shown in Figure 9, make this guide plate 412 can in horizontal direction first, stretch into after between two adjacent vertebral bodies 30, as shown in Figure 10, by this outer tube 41 90-degree rotation, two adjacent vertebral bodies 30 can slightly be strutted by this guide plate 412, disclosed intervertebral fusion fixture 100 is made can be successfully implanted between two adjacent vertebral bodies 30, after operation to be implanted completes, remove this conduit 40, just adjacent two vertebral bodys 30 can be made to recover spacing originally, this intervertebral fusion fixture 100 can be tightly sandwiched between two adjacent vertebral bodies 30, not easily because external force produces displacement, and complete implant procedure.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (11)
1. an intervertebral fusion fixture for memory-type, is characterized in that, comprising:
Support group, containing several carrier unit, makes the mutual pivot joint of two adjacent carrier units, makes the carrier unit that two is adjacent, can freely swing in an angle; And
Formed spring, connects each carrier unit, after each carrier unit of this support group can flexibly be launched, slippage in a conduit, and in time skidding off this conduit, each joint carrier unit is without under External Force Acting, and involution is that the script shape memory that forms of this formed spring arranges.
2. the intervertebral fusion fixture of memory-type according to claim 1, it is characterized in that, each carrier unit of described support group, be respectively equipped with pivoted hole, to allow that trunnion penetrates between two adjacent carrier units, make the two stands unit be mutually pivoted, according to the trunnion penetrated in this two stands unit, can freely swing in certain angle.
3. the intervertebral fusion fixture of memory-type according to claim 1, is characterized in that, is positioned at the carrier unit of described support group head joint, is provided with a convergence part.
4. the intervertebral fusion fixture of memory-type according to claim 1, is characterized in that, be positioned at the carrier unit of described support group minor details, be equipped with a rope hole.
5. the intervertebral fusion fixture of memory-type according to claim 1, is characterized in that, form each joint carrier unit of described support group, makes the contact surface of itself and vertebra, containing several lobe.
6. the intervertebral fusion fixture of memory-type according to claim 1, is characterized in that, form each joint carrier unit of described support group, makes the contact surface of itself and vertebral body, forms the surface of the several micropore of tool.
7. the intervertebral fusion fixture of memory-type according to claim 6, is characterized in that, the aperture of each micropore, between 100 μm ~ 500 μm.
8. the intervertebral fusion fixture of memory-type according to claim 2, is characterized in that, described formed spring, forming at least a set of hole, for wearing the pivot be articulated between two stands unit.
9. the intervertebral fusion fixture of memory-type according to claim 1, it is characterized in that, the two ends of described formed spring, in free end, be defined as the first spring end and the second spring end, make this first spring end be placed through perforation that this support group is arranged in the carrier unit of first joint, this second spring end is placed through the perforation that this support group is arranged in the carrier unit of minor details.
10. conduit according to claim 1, is characterized in that, comprising: an outer tube, and the leading portion of this outer tube contains leads casket, to allow that this intervertebral fusion fixture is in interior slippage, separately in the front end that this leads casket, projects a guide plate; One action bars, containing a spiro rod section, this spiro rod section is screwed together in the back segment of this outer tube, and is radially provided with handle portion in this action bars, and to link, this action bars rotates, and makes this action bars can along this outer tube axial displacement; And a joining rod, this action bars is axially run through in its rear end, is provided with shoulder, is resisted against the front end of this action bars in the stage casing of this joining rod, is this action bars interlock displacement, is separately provided with a linking screw rod in the front end of this joining rod.
11. conduits according to claim 10, is characterized in that, the width of described guide plate is greater than the height of each joint carrier unit of this intervertebral fusion fixture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581513.1A CN104644291B (en) | 2013-11-18 | 2013-11-18 | The intervertebral fusion fixing device of memory-type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581513.1A CN104644291B (en) | 2013-11-18 | 2013-11-18 | The intervertebral fusion fixing device of memory-type |
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| CN104644291A true CN104644291A (en) | 2015-05-27 |
| CN104644291B CN104644291B (en) | 2017-12-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106308983A (en) * | 2016-08-31 | 2017-01-11 | 广州爱锘德医疗器械有限公司 | Fusion cage, operating instrument and vertebrae fusion device |
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| CN104644291B (en) | 2017-12-12 |
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