CN101612054B - External-distraction pedicle screw-rod bracket of vertebral body - Google Patents
External-distraction pedicle screw-rod bracket of vertebral body Download PDFInfo
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- CN101612054B CN101612054B CN2009101576915A CN200910157691A CN101612054B CN 101612054 B CN101612054 B CN 101612054B CN 2009101576915 A CN2009101576915 A CN 2009101576915A CN 200910157691 A CN200910157691 A CN 200910157691A CN 101612054 B CN101612054 B CN 101612054B
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- pedicle screw
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Abstract
The invention relates to an external-distraction pedicle screw-rod bracket of a vertebral body. The external-distraction pedicle screw-rod bracket comprises a pedicle screw and an external connecting rod; the upper part and the lower part of the pedicle screw are provided with screw threads; the upper part of the pedicle screw is also sleeved with a set of locking nuts; the external connecting rod consists of a screw thread sleeve and an angle bolt; the screw threads of the left end and the right end of the inner sleeve wall of the screw thread sleeve have opposite rotating directions; the screw thread of the angle bolt is a right-and-left screw thread; included angles between an upper working face and a horizontal plane and between a lower working face of the angle bolt and the horizontal plane are between 0 and 3 degrees; and the total length of the pedicle screw is between 150 and 160 mm. The external-distraction pedicle screw-rod bracket alleviates wound and pain of patients, doesnot need multi-segmental bone graft fixation, avoids the change on biomechanics caused by spinal fracture fixation, avoids a series of complications caused by bone grafting and internal fixation, provides environment for vertebroplasty, injects bone cement into the suffered vertebra in time, achieves the function of immediate fixation on the suffered vertebra, avoids various medical complicationsbrought by long-term bed, is convenient to use, alleviates the pain of the patients and shortens the operation time.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, the external-distraction pedicle screw-rod bracket of vertebral body that uses when specifically a kind of fracture to breast, lumbar vertebra position is implemented operation.
Background technology
Present the most common two kinds in the posterior approach of the treatment breast of generally acknowledging, lumbar vertebra fracture: the one, open reduction bone grafting pedicle nail bar system internal fixation, the 2nd, vertebroplasty.Though the former can strut the vertebral body of fracture, recover to be squeezed vertebral height and spinal column sequence, because whole system adopts the internal fixation mode, bone grafting does not merge, the hidden danger of internal fixation system fracture so exist; Because this method merges adjacent at least three joint vertebral bodys, has changed the mechanics conduction of spinal column, thereby quicken the regression of other adjacent normal vertebral body; And this method operation wound is big, increases patient's misery.Latter's vertebroplasty is to inject bone cement at the export-oriented vertebra of suffering from of patient body by its pedicle of vertebral arch, though operation is simple, wound is little, but in that to recover aspect the vertebral height effect relatively poor, a series of problems that can not avoid the kyphosis deformity of the spinal column that brings because of the compression vertebral body to cause.
Summary of the invention
The present invention be directed to the deficiencies in the prior art, providing a kind of can combine two kinds of traditional methods, by the external vertebral body that struts compression, give to suffer from vertebra and inject bone cement environment is provided, art finishes the external-distraction pedicle screw-rod bracket of vertebral body that can will be used to strut vertebral body and takes off.
Realize that the technical scheme that the foregoing invention purpose adopts is: a kind of external-distraction pedicle screw-rod bracket of vertebral body, comprise pedicle nail and external connecting rod, described pedicle nail is provided with screw thread up and down, and its top also is set with one group of locking nut; Described external connecting rod is made of screw shell and angle bolt, and the thread rotary orientation at these two ends, screw shell inner tube wall left and right sides is opposite, and the screw thread on the angle bolt is positive left-hand thread, and the angle about the described angle bolt between work surface and the horizontal plane is 0～3 degree; The total length of described pedicle nail is 150～160mm.
Compared with prior art, the length of the present invention by the lengthening pedicle nail realizes that spinal column is external and struts, small wound can ideally strut fractured vertebral body by compression, patient's wound and misery have been reduced, do not need the multi-segmental bone grafting to fix, its change on biomechanics of not only having avoided spinal fracture to fix and having brought, also avoided a series of complication that bone grafting and internal fixation bring as the bone grafting disunion, internal fixation rejection and internal fixation fracture, provide environment for vertebral plasty simultaneously, can in time inject bone cement in suffering from vertebra, play instant fixed effect to suffering from vertebra, patient can be in early days down, the various internal medicine complication of having avoided long-term bed to bring, easy to use, reduce patient's misery, shorten operating time.
Description of drawings
Fig. 1 is external bar linkage structure sketch map.
Fig. 2 is the pedicle nail structural representation.
Fig. 3 is an overall structure sketch map of the present invention.
Among the figure: angle bolt 1, screw shell 2, external connecting rod 3, groove 4, locking nut 5, pedicle nail 6.
The specific embodiment
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
Referring to accompanying drawing 1-3, in the present embodiment, this external-distraction pedicle screw-rod bracket of vertebral body, every group mainly is by two pedicle nails 5 and the supporting structure that external connecting rod 3 constitutes.Wherein: the diameter of pedicle nail 5 is 6mm, and total length is 150mm, and the length that adopts in the present embodiment is 150mm, and pedicle nail 5 is provided with screw thread up and down; The long 20mm of the screw thread on its top is regular screw threads, also is set with one group of locking nut 4 on this screw thread, and to place the locking nut of top be the sphere locking nut, and its following nut is the plane locking nut; The long 50mm of the screw thread of its underpart is cancellous threads.External connecting rod 3 is made of screw shell 2 and two angle bolts 1, and these screw shell 2 inner tube walls are provided with screw thread, and the thread rotary orientation of the right and left is opposite; Screw thread on the angle bolt 1 also is respectively positive left-hand thread, and be screwed in screw shell 2 two ends by screw thread, the work surface up and down of angle bolt 1 end and the angle between the horizontal plane are 3 degree, and the end of this angle bolt 1 is a circular configuration, its inside is provided with the oval-shaped slot that is used to be sleeved on the pedicle nail 6, and its circumference is provided with sloping shape arc groove 4, is used to place the sphere locking nut.
The present invention is by prolonging the length of pedicle nail 6, percutaneous is screwed into the pedicle nail 6 of four pieces of lengthenings respectively to the pedicle of vertebral arch of suffering from the neighbouring normal vertebral body of vertebra under X line C type arm perspective, i.e. two pack support structures, the similar external connecting rod 3 that has angle bolt 1 of external use and AF is connected pedicle nail 6, after by the oval-shaped slot in the angle bolt 1 it being inserted in pedicle nail 6 tail ends, sphere locking nut 5 fixedly pedicle nail 6 and angle bolt 1, make the sphere of sphere locking nut just in time place in the groove 4, make vertebral body obtain good strutting after tightening, and for providing favorable environment to vertebral plasty, under the situation that vertebral body resets, under X line C type arm perspective, inject bone cement by its pedicle of vertebral arch then to suffering from vertebra, after operation finishes, again this supporting structure integral body is taken off.
Adopt 3 to spend the external connecting rod 3 of～0 angle bolt 1 of spending and the pedicle nail 6 that length is 150～160mm according to center pillar pressurized degree before the vertebral body and injured mechanism, wherein angle and length are the inverse ratio outfit, be that the best proportioning of effect is that angle bolt 1 is 3 degree, people's pedicle nail 6 length are 150mm.Wherein: the preceding center pillar compression due to the tangible external connecting rod of 3 degree that adopts of front pillar compression due to the flexing, vertical compression is the external connecting rod of employing 0 degree significantly.
Claims (1)
1. an external-distraction pedicle screw-rod bracket of vertebral body comprises two pedicle nails and an external connecting rod, and described pedicle nail is provided with screw thread up and down, and its top also is set with one group of locking nut; Described external connecting rod is made of screw shell and two angle bolts, the thread rotary orientation of this screw shell inner tube wall the right and left is opposite, screw thread on two angle bolts is respectively positive left-hand thread, and be screwed in the screw shell two ends by positive left-hand thread, it is characterized in that the angle about the described angle bolt between work surface and the horizontal plane is 3 degree; The total length of described pedicle nail is 150～160mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101576915A CN101612054B (en) | 2009-07-24 | 2009-07-24 | External-distraction pedicle screw-rod bracket of vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101576915A CN101612054B (en) | 2009-07-24 | 2009-07-24 | External-distraction pedicle screw-rod bracket of vertebral body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101612054A CN101612054A (en) | 2009-12-30 |
| CN101612054B true CN101612054B (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101576915A Expired - Fee Related CN101612054B (en) | 2009-07-24 | 2009-07-24 | External-distraction pedicle screw-rod bracket of vertebral body |
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| CN (1) | CN101612054B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126756B (en) * | 2013-02-04 | 2015-04-15 | 中国人民解放军第二军医大学 | Posterior pelvic ring fracture minimally-invasive fixator |
| CN105832394A (en) * | 2016-02-26 | 2016-08-10 | 邓宇 | Posterior minimally invasive screw-rod fixation skin-outer resetting system for thoracolumbar vertebral fracture |
| CN105662563A (en) * | 2016-02-26 | 2016-06-15 | 邓宇 | Angle opening restoration bolt of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system |
| CN107981925B (en) * | 2017-12-25 | 2020-12-25 | 陈滨 | Intra-pelvic support fixing system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0499037A2 (en) * | 1991-02-15 | 1992-08-19 | Pfizer Hospital Products Group, Inc. | Spinal fixator reduction frame |
| US6187005B1 (en) * | 1998-09-11 | 2001-02-13 | Synthes (Usa) | Variable angle spinal fixation system |
| CN2601635Y (en) * | 2003-03-10 | 2004-02-04 | 蒋谊康 | Screw-rod angle pedicle fixation device |
| CN1539382A (en) * | 2003-04-25 | 2004-10-27 | 常州市第一人民医院 | Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin |
| CN201048973Y (en) * | 2007-01-08 | 2008-04-23 | 姜国祥 | Spinal external orthopedic fixator |
| EP1928358A2 (en) * | 2005-09-28 | 2008-06-11 | Depuy Spine, Inc. | Rod attachment for head to head cross connector |
| CN101283921A (en) * | 2008-05-29 | 2008-10-15 | 曾逸文 | Pedicle vitro restorer |
-
2009
- 2009-07-24 CN CN2009101576915A patent/CN101612054B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0499037A2 (en) * | 1991-02-15 | 1992-08-19 | Pfizer Hospital Products Group, Inc. | Spinal fixator reduction frame |
| US6187005B1 (en) * | 1998-09-11 | 2001-02-13 | Synthes (Usa) | Variable angle spinal fixation system |
| CN2601635Y (en) * | 2003-03-10 | 2004-02-04 | 蒋谊康 | Screw-rod angle pedicle fixation device |
| CN1539382A (en) * | 2003-04-25 | 2004-10-27 | 常州市第一人民医院 | Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin |
| EP1928358A2 (en) * | 2005-09-28 | 2008-06-11 | Depuy Spine, Inc. | Rod attachment for head to head cross connector |
| CN201048973Y (en) * | 2007-01-08 | 2008-04-23 | 姜国祥 | Spinal external orthopedic fixator |
| CN101283921A (en) * | 2008-05-29 | 2008-10-15 | 曾逸文 | Pedicle vitro restorer |
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| Publication number | Publication date |
|---|---|
| CN101612054A (en) | 2009-12-30 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Tiezhu Inventor after: Wang Yue Inventor after: Qi Xuelei Inventor after: Zhang Zhigang Inventor after: Li Yongmin Inventor after: Wang Xu Inventor before: Wang Tiezhu Inventor before: Zhang Zhigang Inventor before: Li Yongmin Inventor before: Wang Xu Inventor before: Wang Yue Inventor before: Qi Xuelei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG TIEZHU ZHANG ZHIGANG LI YONGMIN WANG XU WANG YUE QI XUELEI TO: WANG TIEZHU WANG YUE QI XUELEI ZHANG ZHIGANG LI YONGMIN WANG XU |
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| C14 | Grant of patent or utility model | ||
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| CP02 | Change in the address of a patent holder |
Address after: 053000 Fourth People's Hospital of Xinhua Road, Hengshui, Hebei 485, China Patentee after: Wang Tiezhu Address before: 063000 Department of orthopedics, hospital of Tangshan City, Hebei, Jianshe Road, Tangshan City Patentee before: Wang Tiezhu |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20160724 |