CN206880763U - One kind is rotatable to strut self-stabilising artificial vertebral body - Google Patents
One kind is rotatable to strut self-stabilising artificial vertebral body Download PDFInfo
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- CN206880763U CN206880763U CN201720031969.4U CN201720031969U CN206880763U CN 206880763 U CN206880763 U CN 206880763U CN 201720031969 U CN201720031969 U CN 201720031969U CN 206880763 U CN206880763 U CN 206880763U
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- China
- Prior art keywords
- hemivertebra
- screw
- pinning
- lock
- vertebral body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 206010019477 Hemivertebra Diseases 0.000 claims abstract description 68
- 230000008719 thickening Effects 0.000 claims description 13
- 210000000988 bone and bone Anatomy 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 5
- 230000002980 postoperative effect Effects 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000004872 soft tissue Anatomy 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002271 resection Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 201000008827 tuberculosis Diseases 0.000 description 2
- 235000018259 Solanum vestissimum Nutrition 0.000 description 1
- 240000002825 Solanum vestissimum Species 0.000 description 1
- 241000377209 Unicorn Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000003592 biomimetic effect Effects 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000001621 ilium bone Anatomy 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001394 metastastic effect Effects 0.000 description 1
- 206010061289 metastatic neoplasm Diseases 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
One kind is rotatable to strut self-stabilising artificial vertebral body, including upper hemivertebra, lower hemivertebra, upper lock screw, lower lock screw, and upper hemivertebra, lower hemivertebra are hollow circular cylinder；Upper hemivertebra is connected through a screw thread with lower hemivertebra；Upper hemivertebra, lower hemivertebra are distributed with 9 pinning screws around its annulus；Pinning screw is 40 ° at sagittal plain top caudal inclination angle, and the axis angle of two adjacent locking screws is 40 ° on Coronal.The utility model moves back silk by rotating screw thread and realizes strutting for artificial vertebral body；Upper hemivertebra, the lock hole at lower hemivertebra both ends, it is possible to achieve both ends are selectively implanting 2 pieces of lock screws, and the steady lock for completing artificial vertebral body is fixed；The hollow out body that upper hemivertebra and lower hemivertebra are set, this gap structure realize that bone grafting merges.The utility model locking is fixed and hollow design bone grafting, has reached immediate postoperative stability, has taken into account long-time stability again；Threaded connection, which realizes, effectively to be strutted, and recovers the height of centrum.
Description
Technical field
The present invention relates to medical instruments field, and self-stabilising artificial vertebral body is strutted more particularly to one kind is rotatable.
Background technology
Existing artificial vertebral body, when being mainly used in neck, thoracolumbar vertebrae vertebral resection reconstruction spinal stability, have as one kind
The vertebral body replacements of effect, are clinically widely used, and are broadly divided into simple support type, strut fixed, adjustable fixation
Type three types.1. simple support type：What ono reported equal to 1975,1988 is made artificial vertebra using metal and ceramic material
Body, for treating cervical vertebra metastatic tumo(u)r, without special fixed system, fixed with upper hypocentrum relies in the inner its shortcoming
Fill bone cement or between centrum, fill the Cranial defect after vertebral resection, fixation is poor；2. strut fixed：This
Class artificial vertebral body is mutually fixed by spininess thing and upper hypocentrum, reaches the Initial stability of backbone, and titanium net is most-often used
Fixed artificial vertebral body can be strutted, is widely used in vertebral body reconstruction, but this body length is fixed and can not adjusted after the implantation of shortcoming titanium net
Section, therefore selection is stricter during application, is otherwise not only difficult to recover preferable vertebral height, and have the danger to come off；3. can
Fixed is adjusted, domestic and foreign scholars have developed a variety of and with their own characteristics, applied to clinic and achieves the effect of certain, mainly has
The design such as Synex, LIFT artificial vertebral body, and the hollow adjustable titanium alloy artificial vertebral body of the development such as Zhao Dinglin, Yang Rui Pu
Artificial vertebral body, the artificial vertebral body can adjust the length of centrum, reach the purpose for preferably recovering vertebral height, its hollow knot
Structure, bone grafting can be made to form permanent bone with centrum and merged；But fixation is contacted with upper hypocentrum with spininess thing, generally require
Extra apparatus（Via Posterior Spinal Approach pedicle screw system）Auxiliary maintains the stabilization of backbone, therefore generally requires row facet locking
Operation, undoubtedly make operation wound increase, time lengthening, medical expense increase.
It is not only growing day by day in operation on vertebra with the development of spine surgical technique, and range of operation is increasing, especially
It is transferred into the malignant tumour of vertebra.For such a case, operative doctor often faces following three problems and needs to solve,（1）
The filling of Cranial defect：Autologous iliac bone or fibula block is previously taken to be implanted into mostly, because increase is once performed the operation and is caused for bone area
Various complication, do not welcome for patient and patient at present.（2）Operation vertebra section needs to strut：Due to lesion or wound, vertebra
Section preoperative has formed the different compression of degree applying.Therefore, the original height of vertebra section must be recovered simultaneously in operation.（3）Shi Shu
Vertebra section needs stabilization：Sick and wounded vertebra section is postoperative by thoroughly excision decompression or focal cleaning, local original stability with bone with
The excision of soft tissue and substantially reduce, or even be unable to maintain that the normal occlusion relation of vertebra section.In the case, the steady of vertebra section is repaired
The fixed recovery to local function plays an important roll.The appearance of artificial vertebral body, for diseases such as treatment tumor of spine, tuberculosis and fracture
Disease brings great convenience.
But by a series of Biomechanics test and clinical practice, show artificial vertebral body in terms of axial-rotation
Deficiency;Some can not cause implant abjection damage spinal cord with upper hypocentrum strong bonded;Some are unable to bone grafting, do not reach
Satisfied Bony union, stability at a specified future date are poor.Preferable vertebral body replacements should possess following functions:1. both there is immediate postoperative
Stability, long-time stability are taken into account again, preferably forming permanent bone with centrum merges;2. the height of centrum can be thus capable of sufficiently recovering
Degree;3. implantation is convenient;4. should have good biocompatibility in terms of material, should there is preferable anti-fatigue performance again, up to
Safe and reliable stability is provided before to Bony union, and does not influence MR inspections.
Artificial vertebral body kind of design is also from initial simple support type at present, develop into preferable can recover vertebral height can
Adjust fixed, below I with regard to adjustable fixed artificial vertebral body technical disadvantages make one illustrate.
1. the middle air conditioner type titanium alloy artificial vertebral body that Zhao Ding unicorns are developed, application number 99225869.3 can adjust artificial vertebra
The length of body, reach the purpose for preferably recovering vertebral height, but fixation is only contacted with upper hypocentrum with spininess thing, often
Need extra apparatus（Via Posterior Spinal Approach pedicle screw system）Auxiliary maintains the stabilization of backbone, therefore generally requires road before and after row
Combined surgery, undoubtedly make operation wound increase, time lengthening, medical expense increase.
2. the frame-type artificial vertebral body that king Yongqing is developed, application number 200920096115.x pass through both ends supporting plate screw interlocking
Stable fixation is realized, sleeve rotating makes the axis at both ends strut automatically, but is to be stacked at framework week with loose to bone grafting
Enclose, bone grafting is without load-bearing, it is contemplated that bone grafting is merged to be formed and is embedded framework.The undoubtedly absorption of bone grafting, and slide, displacement is can not
Avoid, long-term stability of lacking；Supporting plate and cross screw implantation simultaneously, not completely in interbody space, can substantially increase
The influence of soft tissue by vertebra.
3. Yu Wenpei grade development has mobility and the biomimetic prosthetic centrum conveniently inserted, application number
201510490539.4 have the dual-use function of support and activity, need accurately to measure defect length in art, trim titanium net, can not
Tune struts function, it is impossible to reaches and recovers preferable vertebral height.Lower articular body and cross screw implantation simultaneously, do not exist completely
In interbody space, it can substantially increase the influence of soft tissue by vertebra.
Utility model content
In summary, the purpose of this utility model be to provide it is a kind of it is rotatable strut self-stabilising artificial vertebral body, the centrum
Brought great convenience for diseases such as treatment tumor of spine, tuberculosis and fracture, further expand range of operation and reduce concurrent
Disease, operation technique is more convenient from cumbersome trend, and immediate postoperative is stable to be guaranteed with permanent stabilization.
The purpose of this utility model is achieved through the following technical solutions：
One kind is rotatable to strut self-stabilising artificial vertebral body, including upper hemivertebra, lower hemivertebra, upper lock screw, lower lock
Determine screw, the upper hemivertebra, lower hemivertebra are hollow circular cylinder；The upper hemivertebra is connected through a screw thread with lower hemivertebra.
One end of the upper hemivertebra is provided with screw thread, and the other end is upper thickening body, be between screw thread and upper thickening body on engrave
Hollow body；The upper hemivertebra is also evenly distributed with 9 pinning screws around its annulus.
One end of the lower hemivertebra is provided with screw thread, and the other end is lower thickening body, be between screw thread and lower thickening body on engrave
Hollow body；The lower hemivertebra is also evenly distributed with 9 pinning screws around its annulus.
The pinning screw is 40 ° at sagittal plain top caudal inclination angle, the axis of two adjacent locking screws on Coronal
Angle is 40 °.
The upper lock screw passes through the pinning screw of upper hemivertebra, and its screwing keyed end locks with pinning screw；Under
Lock screw passes through the pinning screw of lower hemivertebra, and its lower screw keyed end locks with pinning screw.
The utility model moves back silk by rotating screw thread and realizes strutting for artificial vertebral body；Upper hemivertebra, lower hemivertebra both ends
Lock hole, it is possible to achieve both ends are selectively implanting 2 pieces of lock screws, and the steady lock for completing artificial vertebral body is fixed；Upper hemivertebra
The hollow out body set with lower hemivertebra, this gap structure can realize bone grafting fusion.
The utility model has advantages below compared with prior art：
1. the utility model is using the turnbuckle of screw thread rotation to reach the purpose for strutting vertebra section, its length is with extensive
The multiple original height of vertebra section is limited, and to prevent sclerotin from collapsing caused retraction, moderately " can exceed the proper limits in righting a wrong ", but its length should be controlled
System is within 10%.
2. the utility model utilizes screwed hole and the screw of threaded head（Lock screw）Angle is formed after being screwed into fix i.e.
Fixation principle is locked, after predetermined altitude is reached after artificial vertebral body struts, selects suitable lock hole to be screwed into lock screw, by people
Work centrum is stably fixed on vertebra section up and down, is bounced back after preventing artificial vertebral body turnbuckle, and artificial vertebral body displacement；It is implanted into behaviour
Make simple.
3. upper hemivertebra of the present utility model and lower hemivertebra are hollow design, convenient internal bone grafting can meet and centrum
Form the purpose of permanent Bony union.
4. the utility model, which is connected through a screw thread, realizes that artificial vertebral body struts, artificial vertebral body realizes zero with pleurocentrum end to end
Incisura is fixed, and upper hemivertebra and lower hemivertebra both ends lock-in techniques are fixed, and disclosure satisfy that preferable four requirements of artificial vertebral body
1）Fixed and hollow design bone grafting is locked, has reached immediate postoperative stability, has taken into account long-time stability again；
2）Threaded connection, which realizes, effectively struts, and recovers the height of centrum；
3）Original paper is simply inserted conveniently；Operating time is shortened, anesthetic risks is undoubtedly reduced and peri-operation period is concurrent
Disease；
4）Medical titanium metal material is used, there is good biocompatibility, there should be preferable anti-fatigue performance again,
Safe and reliable stability is provided before Bony union is reached, and does not influence MR inspections.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 right view.
Fig. 3 is A-A views in Fig. 1.
In figure：Lock screw under hemivertebra, the upper lock screws of 3-, 4- under the upper hemivertebras of 1-, 2-, 5- pinnings screw, on 11-
Thicken body, the upper hollow out bodies of 12-, screw keyed end under hollow out body, 31- screwings keyed end, 41- under thickening body, 22- under 21-.
Embodiment
Illustrate to be described further the utility model below in conjunction with the accompanying drawings：
It is a kind of it is rotatable strut self-stabilising artificial vertebral body, including upper hemivertebra 1, lower hemivertebra 2, upper lock screw 3, under
Lock screw 4, the upper hemivertebra 1, lower hemivertebra 2 are hollow circular cylinder；The upper hemivertebra 1 passes through spiral shell with lower hemivertebra 2
Line connects；One end of the upper hemivertebra 1 is provided with screw thread, and the other end is upper thickening body 11, is between screw thread and upper thickening body 11
Upper hollow out body 12；The upper hemivertebra 1 is also evenly distributed with 9 pinning screws 5 around its annulus；The one of the lower hemivertebra 2
End is provided with screw thread, and the other end is lower thickening body 21, is upper hollow out body 22 between screw thread and lower thickening body 21；The lower hemivertebra 2
9 pinning screws 5 are also evenly distributed with around its annulus；The pinning screw is 40 ° at sagittal plain top caudal inclination angle, is being preced with
The axis angle of two adjacent locking screws 5 is 40 ° on shape position；The upper lock screw 3 passes through the pinning screw 5 of upper hemivertebra 1,
Its screwing keyed end 31 locks with pinning screw 5；The lower lock screw 4 passes through the pinning screw 5 of lower hemivertebra 2, under it
Screw keyed end 41 locks with pinning screw 5.
Embodiment
Hemivertebra on the utility model 1, lower hemivertebra 2 are connected through a screw thread as an entirety, then are embedded into needs
The centrum position of reconstruction, using the lock hole 5 on upper hemivertebra 1 and lower hemivertebra 2, locking bushing is screwed into, utilizes locking bushing
Upper hemivertebra 1, lower hemivertebra 2 are done opposite direction rotary opening by hold, are selected lock hole 5 by converting, are gradually completing upper half
Centrum 1 and the silk that moves back of lower hemivertebra 2 are strutted, and 2 screw holes 5 are respectively selected in upper hemivertebra 1 and lower hemivertebra 2, are screwed into locking set
Cylinder is completed side normal vertebral body end to end and drilled, and is screwed into upper lock screw 3 and lower lock screw 4 along screw way, is locked by screwing
Fixed end 31 and lower screw keyed end 41 are completed steady lock with upper hemivertebra 1 and lower hemivertebra 2 respectively and fixed.
Claims (1)
1. one kind is rotatable to strut self-stabilising artificial vertebral body, including upper hemivertebra（1）, lower hemivertebra（2）, upper lock screw
（3）, lower lock screw（4）, it is characterised in that：The upper hemivertebra（1）, lower hemivertebra（2）For hollow circular cylinder；The upper half
Centrum（1）With lower hemivertebra（2）It is connected through a screw thread；The upper hemivertebra（1）One end be provided with screw thread, the other end is upper thickening
Body（11）, screw thread and upper thickening body（11）Between be upper hollow out body（12）；The upper hemivertebra（1）Also uniformly divide around its annulus
It is furnished with 9 pinning screws（5）；The lower hemivertebra（2）One end be provided with screw thread, the other end is lower thickening body（21）, screw thread with
Lower thickening body（21）Between be lower hollow out body（22）；The lower hemivertebra（2）9 pinning spiral shells are also evenly distributed with around its annulus
Hole（5）；The pinning screw（5）It is 40 ° at sagittal plain top caudal inclination angle, the two adjacent locking screw on Coronal（5）'s
Axis angle is 40 °；The upper lock screw（3）Through upper hemivertebra（1）Pinning screw（5）, its screwing keyed end
（31）With pinning screw（5）Locking；The lower lock screw（4）Through lower hemivertebra（2）Pinning screw（5）, its lower screw
Keyed end（41）With pinning screw（5）Locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720031969.4U CN206880763U (en) | 2017-01-12 | 2017-01-12 | One kind is rotatable to strut self-stabilising artificial vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720031969.4U CN206880763U (en) | 2017-01-12 | 2017-01-12 | One kind is rotatable to strut self-stabilising artificial vertebral body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206880763U true CN206880763U (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720031969.4U Expired - Fee Related CN206880763U (en) | 2017-01-12 | 2017-01-12 | One kind is rotatable to strut self-stabilising artificial vertebral body |
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| CN (1) | CN206880763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112957161A (en) * | 2021-01-29 | 2021-06-15 | 四川大学华西医院 | Wing-shaped fixing titanium net for cervical vertebra lateral bone grafting distraction |
-
2017
- 2017-01-12 CN CN201720031969.4U patent/CN206880763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112957161A (en) * | 2021-01-29 | 2021-06-15 | 四川大学华西医院 | Wing-shaped fixing titanium net for cervical vertebra lateral bone grafting distraction |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20190112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |