CN103598909A - Posterior spinal fixation instrument - Google Patents
Posterior spinal fixation instrument Download PDFInfo
- Publication number
- CN103598909A CN103598909A CN201310589559.8A CN201310589559A CN103598909A CN 103598909 A CN103598909 A CN 103598909A CN 201310589559 A CN201310589559 A CN 201310589559A CN 103598909 A CN103598909 A CN 103598909A
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- China
- Prior art keywords
- screw
- head
- posterior spinal
- hole
- barred body
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- 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
Abstract
The invention relates to a posterior spinal fixation instrument comprising two rods arranged bilaterally symmetrically. A connecting rod is arranged between the two rods, two ends of the connecting rod are connected with the rods respectively, a plurality of screws are arranged on each rod, and the head of each screw is movably connected with the corresponding rod. The posterior spinal fixation instrument can meet the requirements of cervical internal fixation surgery, is good in reduction and fixation effect, and is used for maintaining natural physiological curve of the lesion spine and restoring natural physiological function of the human spine.
Description
Technical field
The present invention relates to spinal column implantation instrument field, refer to especially a kind of Via Posterior Spinal Approach fixed apparatus.
Background technology
In the treatment of mankind's spinal disease, because tumor of spine, tuberculosis and serious fracture often cause vertebral bodies destroyed, may cause spinal nerves infringement and have to implement vertebral resection art, spinal column after vertebral resection need be rebuild its stability, and this type of disease for the treatment of that appears as of artificial vertebral body replacement provides a kind of comparatively desirable method.Since substituting from the excision of eighties of last century reported first at end of the sixties vertebral tumor and with prosthese, artificial vertebral body is widely applied clinically as the effective vertebral body substitute of a class.But in the test of clinical practice and a series of biomechanics, demonstrating traditional artificial vertebral body remains in some aspects at some and has problem to be solved, particularly the stability of postoperative axial-rotation aspect not, with the early stage bond strength of upper hypocentrum low easily cause implant displacement even deviate from, for the bone amount in bone grafting hole, assurance center causes the design area of the upper and lower soleplate of artificial vertebral body to dwindle, thereby the not enough soleplate that makes artificial vertebral body be absorbed in hypocentrum of support degree is interior, finally lost ideal height.In order to reduce the impact of the problems referred to above, people have to add the nail-plate of the front road of enforcement or the way of escape in implantable artificial vertebral body or follow closely excellent fixed system to the stable of early stage and bone incorporating period is provided, this has just worsened the mechanical environment of screw in internal fixation system in the middle of invisible, increase broken nail probability, and made artificial vertebral body depression enter the phenomenon aggravation of upper and lower terminal plate of vertebral body.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of can with the Via Posterior Spinal Approach fixed apparatus of spinal column fixing-stable.
For addressing the above problem, the technical solution used in the present invention is: Via Posterior Spinal Approach fixed apparatus, comprise two barred bodies that are symmetrical set, between two barred bodies, be provided with connecting rod, the two ends of connecting rod are connected with barred body respectively, on every barred body, be respectively arranged with a plurality of screws, the head of screw is flexibly connected mutually with barred body.
Described connecting rod comprises left bar and right bar, in left bar, is provided with long lumbar hole, on right bar, is provided with lock nut, and lock nut is arranged in long lumbar hole, and can transverse shifting locking in long lumbar hole.
Described screw is divided into fixed screw and movable screw.
Screw afterbody and the screw head of described fixed screw are integrated stationary structure, in the head of screw, be provided with the first axial screwed hole, in the first screwed hole, be provided with the first screw element being meshed with it, the head of screw is provided with the first axial notch, and the width of the first notch matches with the diameter of barred body.
The screw afterbody of described movable screw and screw head are split-type structural, afterbody one end of screw is provided with spheroid, in the head of screw, be provided with the spacing hole matching with spheroid, the diameter of spheroid is greater than the diameter of spacing hole, in the head of screw, be also provided with limited block, limited block is arranged in spacing hole realizes spacing to spheroid, the afterbody of screw can be rotated to an angle in spacing hole, the head of screw is provided with the second axial screwed hole, in the second screwed hole, be provided with the second screw element being meshed with it, the head of screw is provided with the second axial notch, the width of the second notch matches with the diameter of barred body.
The two ends of described barred body are hexagonal structure.
The invention has the beneficial effects as follows: above-mentioned Via Posterior Spinal Approach fixed apparatus, it is simple in structure, easy to use.It can meet the demand of cervical vertebra internal fixation operation, and reset and fixed effect are good, for maintaining the natural physiological bending of pathological changes spinal column, recovers human spine's normal physiological function.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of fixed screw in Fig. 1;
Fig. 3 is the structural representation of movable screw in Fig. 1;
Fig. 4 is the sectional structure schematic diagram of Fig. 3;
In figure: 1, barred body, 2, left bar, 3, right bar, 4, long lumbar hole, 5, lock nut, 6, the first screwed hole, the 7, first screw element, the 8, first notch, 9, spheroid, 10, spacing hole, 11, limited block, the 12, second screwed hole, the 13, second screw element, the 14, second notch.
The specific embodiment
Below by specific embodiment, Via Posterior Spinal Approach fixed apparatus of the present invention is described in further detail.
As shown in Figure 1, Via Posterior Spinal Approach fixed apparatus, comprises two barred bodies that are symmetrical set 1, between two barred bodies 1, be provided with connecting rod, the two ends of connecting rod are connected with barred body 1 respectively, on every barred body 1, are respectively arranged with a plurality of screws, and the head of screw is flexibly connected mutually with barred body 1.Described connecting rod comprises left bar 2 and right bar 3, in left bar 2, is provided with long lumbar hole 4, on right bar 3, is provided with lock nut 5, and lock nut 5 is arranged in long lumbar hole 4, and can transverse shifting locking in long lumbar hole 4.Thereby can, by the adjusting of left bar 2 and right bar 3, regulate two distances between barred body 1.
Screw is divided into fixed screw and movable screw.
As shown in Figure 2, screw afterbody and the screw head of described fixed screw are integrated stationary structure, in the head of screw, be provided with the first axial screwed hole 6, in the first screwed hole 6, be provided with the first screw element 7 being meshed with it, the width that the head of screw is provided with the first axial notch 8, the first notches 8 matches with the diameter of barred body 1.Barred body 1 is arranged in the first notch 8, the locking realizing barred body 1 by the first screw element 7.
As Fig. 3, shown in Fig. 4, the screw afterbody of described movable screw and screw head are split-type structural, afterbody one end of screw is provided with spheroid 9, in the head of screw, be provided with the spacing hole 10 matching with spheroid 9, the diameter of spheroid 9 is greater than the diameter of spacing hole 10, in the head of screw, be also provided with limited block 11, limited block 11 is arranged in spacing hole 10 realizes spacing to spheroid 9, the afterbody of screw can be rotated to an angle in spacing hole 10, the head of screw is provided with the second axial screwed hole 12, in the second screwed hole 12, be provided with the second screw element 13 being meshed with it, the head of screw is provided with the second axial notch 14, the width of the second notch 14 matches with the diameter of barred body 1.Barred body 1 is arranged in the second notch 14, the locking realizing barred body 1 by the second screw element 13.
The two ends of described barred body 1 are hexagonal structure, can match with spanner, barred body 1 can be bent to the curved shape coordinating with spinal column.
A kind of operation process of Via Posterior Spinal Approach fixed apparatus of the present invention is:
1) take out and need replaced impaired host vertebral body sections;
2) select the artificial vertebral body main body of suitable height to pack the impaired host vertebral body sections position being removed into, in the bone grafting hole of artificial vertebral body main body, be implanted into if desired the bone piece of autologous bone or allograph bone and broken osseous granules to induce creeping of following osteocyte to grow into;
3) select the vertebral body hold-down screw of suitable diameter and length, vertebral body hold-down screw is screwed in the soleplate of upper and lower two adjacent host health vertebral bodys by the vertebral body fixing screw hole in artificial vertebral body main body, and now two adjacent host health terminal plate of vertebral body fit tightly the vertebral fusion face by vertebral body hold-down screw and artificial vertebral body main body;
4) at the vertebral body hold-down screw that is arranged in homonymy, barred body 1 is set respectively, oncomelania is positioned;
5) connecting rod is installed, two barred bodies 1 are connected to location.
Well-known operation plan has a variety of to the judgement for the treatment of according to patient's concrete condition and patient, do not do more detailed description here.
The invention has the beneficial effects as follows: above-mentioned Via Posterior Spinal Approach fixed apparatus, it is simple in structure, easy to use.It can meet the demand of cervical vertebra internal fixation operation, and reset and fixed effect are good, for maintaining the natural physiological bending of pathological changes spinal column, recovers human spine's normal physiological function.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. Via Posterior Spinal Approach fixed apparatus, it is characterized in that: comprise two barred bodies that are symmetrical set, between two barred bodies, be provided with connecting rod, the two ends of connecting rod are connected with barred body respectively, on every barred body, be respectively arranged with a plurality of screws, the head of screw is flexibly connected mutually with barred body.
2. Via Posterior Spinal Approach fixed apparatus according to claim 1, it is characterized in that: described connecting rod comprises left bar and right bar, in left bar, is provided with long lumbar hole, on right bar, is provided with lock nut, lock nut is arranged in long lumbar hole, and can transverse shifting locking in long lumbar hole.
3. Via Posterior Spinal Approach fixed apparatus according to claim 1 and 2, is characterized in that: described screw is divided into fixed screw and movable screw.
4. Via Posterior Spinal Approach fixed apparatus according to claim 3, it is characterized in that: screw afterbody and the screw head of described fixed screw are integrated stationary structure, in the head of screw, be provided with the first axial screwed hole, in the first screwed hole, be provided with the first screw element being meshed with it, the head of screw is provided with the first axial notch, and the width of the first notch matches with the diameter of barred body.
5. Via Posterior Spinal Approach fixed apparatus according to claim 3, it is characterized in that: the screw afterbody of described movable screw and screw head are split-type structural, afterbody one end of screw is provided with spheroid, in the head of screw, be provided with the spacing hole matching with spheroid, the diameter of spheroid is greater than the diameter of spacing hole, in the head of screw, be also provided with limited block, limited block is arranged in spacing hole realizes spacing to spheroid, the afterbody of screw can be rotated to an angle in spacing hole, the head of screw is provided with the second axial screwed hole, in the second screwed hole, be provided with the second screw element being meshed with it, the head of screw is provided with the second axial notch, the width of the second notch matches with the diameter of barred body.
6. Via Posterior Spinal Approach fixed apparatus according to claim 1 and 2, is characterized in that: the two ends of described barred body are hexagonal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589559.8A CN103598909A (en) | 2013-11-21 | 2013-11-21 | Posterior spinal fixation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589559.8A CN103598909A (en) | 2013-11-21 | 2013-11-21 | Posterior spinal fixation instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103598909A true CN103598909A (en) | 2014-02-26 |
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ID=50117220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310589559.8A Pending CN103598909A (en) | 2013-11-21 | 2013-11-21 | Posterior spinal fixation instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN103598909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105055007A (en) * | 2015-08-31 | 2015-11-18 | 中国人民解放军第四军医大学 | Posterior spine fixing device |
| CN107669376A (en) * | 2017-10-26 | 2018-02-09 | 北京爱康宜诚医疗器材有限公司 | Via Posterior Spinal Approach device |
| CN112294501A (en) * | 2020-10-30 | 2021-02-02 | 东南大学 | Adjustable and assembled animal vertebral body fixing instrument |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201076514Y (en) * | 2007-08-03 | 2008-06-25 | 上海锐植医疗器械有限公司 | Cervical posterior approach bolt |
| US20100217322A1 (en) * | 2009-02-26 | 2010-08-26 | Daniel Predick | Posterior Spinal Bridge Assembly Providing Static or Dynamic N-Level Spinal Bridge Interconnection |
| CN201586059U (en) * | 2010-06-30 | 2010-09-22 | 深圳市斯玛仪器有限公司 | Posterior cervical vertebra canal fixing system |
| CN201977917U (en) * | 2010-11-11 | 2011-09-21 | 周建明 | Non-fusion elastic rod internal fixing system |
| US20110319893A1 (en) * | 2008-11-10 | 2011-12-29 | Todd Stanaford | Method, system, and apparatus for mammalian bony segment stabilization |
| CN202223330U (en) * | 2011-10-12 | 2012-05-23 | 常州迪恩医疗器械有限公司 | Internal fixing system for cervical posterior approach |
| CN203619648U (en) * | 2013-11-21 | 2014-06-04 | 江苏百得医疗器械有限公司 | Spine posterior fixing instrument |
-
2013
- 2013-11-21 CN CN201310589559.8A patent/CN103598909A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201076514Y (en) * | 2007-08-03 | 2008-06-25 | 上海锐植医疗器械有限公司 | Cervical posterior approach bolt |
| US20110319893A1 (en) * | 2008-11-10 | 2011-12-29 | Todd Stanaford | Method, system, and apparatus for mammalian bony segment stabilization |
| US20100217322A1 (en) * | 2009-02-26 | 2010-08-26 | Daniel Predick | Posterior Spinal Bridge Assembly Providing Static or Dynamic N-Level Spinal Bridge Interconnection |
| CN201586059U (en) * | 2010-06-30 | 2010-09-22 | 深圳市斯玛仪器有限公司 | Posterior cervical vertebra canal fixing system |
| CN201977917U (en) * | 2010-11-11 | 2011-09-21 | 周建明 | Non-fusion elastic rod internal fixing system |
| CN202223330U (en) * | 2011-10-12 | 2012-05-23 | 常州迪恩医疗器械有限公司 | Internal fixing system for cervical posterior approach |
| CN203619648U (en) * | 2013-11-21 | 2014-06-04 | 江苏百得医疗器械有限公司 | Spine posterior fixing instrument |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105055007A (en) * | 2015-08-31 | 2015-11-18 | 中国人民解放军第四军医大学 | Posterior spine fixing device |
| CN105055007B (en) * | 2015-08-31 | 2018-10-12 | 中国人民解放军第四军医大学 | A kind of way of escape spinal fixation system |
| CN107669376A (en) * | 2017-10-26 | 2018-02-09 | 北京爱康宜诚医疗器材有限公司 | Via Posterior Spinal Approach device |
| CN112294501A (en) * | 2020-10-30 | 2021-02-02 | 东南大学 | Adjustable and assembled animal vertebral body fixing instrument |
| CN112294501B (en) * | 2020-10-30 | 2021-09-10 | 东南大学 | Adjustable and assembled animal vertebral body fixing instrument |
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Application publication date: 20140226 |