CN101612054B - External-distraction pedicle screw-rod bracket of vertebral body - Google Patents

External-distraction pedicle screw-rod bracket of vertebral body Download PDF

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Publication number
CN101612054B
CN101612054B CN 200910157691 CN200910157691A CN101612054B CN 101612054 B CN101612054 B CN 101612054B CN 200910157691 CN200910157691 CN 200910157691 CN 200910157691 A CN200910157691 A CN 200910157691A CN 101612054 B CN101612054 B CN 101612054B
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China
Prior art keywords
pedicle screw
screw
distraction
external
pedicle
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CN 200910157691
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Chinese (zh)
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CN101612054A (en
Inventor
张志刚
李永民
王旭
王月
王铁铸
齐雪雷
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王铁铸
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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

脊柱体外撑开椎弓根钉棒支架 Spinal pedicle screw bracket distraction vitro

技术领域 FIELD

[0001] 本发明涉及一种医疗器械,具体地说是一种对胸、腰椎部位的骨折实施手术时使用的脊柱体外撑开椎弓根钉棒支架。 [0001] The present invention relates to a medical instrument, particularly to a chest, when used in vitro spinal surgery distraction of the fracture site lumbar pedicle screw bracket.

背景技术 Background technique

[0002] 目前公认的治疗胸、腰椎骨折的后路方法中的最常见两种:一是切开复位植骨椎弓根钉棒系统内固定,二是椎体成形术。 [0002] The most common currently two recognized the thoracic and lumbar vertebrae in the posterior method: First, open reduction and internal bone fixation pedicle screw system, and second, vertebroplasty. 前者虽能撑开骨折的椎体,恢复受挤压椎体高度及脊柱序列,但由于整套系统采用内固定方式,故存在植骨不融合、内固定系统断裂的隐患; 由于该方法融合相邻至少三节椎体,改变了脊柱的力学传导,从而加速其他相邻正常椎体的退变;且这种方法手术创伤大,增加病人的痛苦。 Although the former can distraction vertebral fractures, and vertebral height restoration squeezed spinal alignment, but the entire system of internal fixation, so there is nonunion, fracture fixation system hidden; due to the fusion of adjacent at least three vertebrae, changing the mechanics of the spine conduction, thus accelerating degeneration of the other adjacent vertebral body normal; and this method surgical trauma, increased pain. 后者椎体成形术是在病人体外向患椎通过其椎弓根注入骨水泥,虽然手术简单,创伤小,但在恢复椎体高度方面效果较差,不能避免因压缩椎体带来的脊柱的后突畸形而引发的一系列问题。 The latter vertebroplasty is outside the patient to the risk of vertebral pedicle through which the bone cement is injected, though the operation is simple, less invasive, but less effective in terms of height restoration of vertebral, it can not be avoided due to spinal vertebrae caused by compression the kyphosis and caused a series of problems.

发明内容 SUMMARY

[0003] 本发明是针对现有技术的不足,提供一种能够将两种传统方法相结合,通过体外撑开压缩的椎体,给患椎注入骨水泥提供环境,术毕即可将用于撑开椎体的脊柱体外撑开椎弓根钉棒支架取下。 [0003] The present invention is directed to deficiencies of the prior art, to provide a combination of the two conventional methods, by compression of the vertebral distraction in vitro, to provide risk of vertebral bone cement implantation environment, it can be used for surgery for distraction spine pedicle screw bracket vitro distraction removed.

[0004] 实现上述发明目的采用的技术方案是:一种脊柱体外撑开椎弓根钉棒支架,包括椎弓根钉和体外连杆,所述椎弓根钉上下均设置有螺纹,其上部还套装有一组锁紧螺母;所述体外连杆由螺纹套筒和角度螺栓构成,该螺纹套筒内筒壁左右两端的螺纹旋向相反,角度螺栓上的螺纹为正反螺纹,所述角度螺栓上下工作面与水平面之间的夹角为0〜3度;所述椎弓根钉的总长度为150〜160_。 [0004] The technical solution to achieve the above object uses: A spinal distraction vitro pedicle screw bracket, comprising a pedicle screw and rod in vitro, the pedicle screw is provided with a vertical threaded upper portion there is also a set of lock nut set; the in vitro link angle of the threaded sleeve and bolt configuration, the threaded sleeve threaded inner tubular wall of the opposite left and right ends, is threaded on the bolt reverse angle thread, the angle the angle between the horizontal plane and the upper and lower working bolt 0~3 degrees; the total length of the pedicle screw is 150~160_.

[0005] 与现有技术相比,本发明通过加长椎弓根钉的长度实现脊柱体外撑开,微小的创伤能够理想的撑开受压缩的骨折椎体,减少了患者的创伤及痛苦,不需要多节段植骨固定, 不仅避免了脊柱骨折固定而带来的其在生物力学上的改变,还避免了植骨及内固定带来的一系列并发症如:植骨不愈合,内固定排斥反应及内固定断裂,同时为椎体成形提供环境, 能够及时向患椎内注入骨水泥,对患椎起到即时固定的作用,病人能够早期下地,避免了长期卧床带来的各种内科并发症,使用方便,减少病人痛苦,缩短手术时间。 [0005] Compared with the prior art, the present invention is achieved by lengthening the length of the spinal pedicle screw distraction vitro, ideally minor trauma spreader vertebral compression fractures by, reducing patient trauma and pain, no need more bone segments to be fixed, not only to avoid spinal fracture fixation brought about its change in biomechanics, but also to avoid bone graft and internal fixation brought about by a series of complications, such as: bone nonunion, internal fixation fracture fixation rejection and, at the same time provide an environment for vertebroplasty, timely injected into the risk of vertebral bone cement, to play a role of a fixed immediate risk of vertebral, early ambulation of patients can be avoided caused by various medical bedridden complications, easy to use, reduce patient pain, shorten the operation time.

附图说明 BRIEF DESCRIPTION

[0006] 图1为体外连杆结构示意图。 [0006] FIG. 1 is a schematic vitro link structure.

[0007] 图2为椎弓根钉结构示意图。 [0007] FIG. 2 is a schematic structural pedicle screw.

[0008] 图3为本发明整体结构示意图。 [0008] Fig 3 a schematic view of the overall structure of the present invention.

[0009] 图中:角度螺栓1,螺纹套筒2,体外连杆3,凹槽4,锁紧螺母5,椎弓根钉6。 [0009] In the drawings: angular bolt 1, the threaded sleeve 2, in vitro link 3, the recess 4, locking nut 5, 6 pedicle screw.

3具体实施方式 3 DETAILED DESCRIPTION

[0010] 下面结合附图和实施例详述本发明。 [0010] DETAILED DESCRIPTION The following drawings and examples in conjunction with the present invention.

[0011] 参见附图1-3,本实施例中,这种脊柱体外撑开椎弓根钉棒支架,每组主要是由两个椎弓根钉5和一根体外连杆3构成的支架结构。 [0011] Referring to Figures 1-3, in this embodiment, the in vitro spinal pedicle screw distraction holder, each holder is mainly composed of two pedicle screws 5 and a connecting rod 3 in vitro structure. 其中:椎弓根钉5的直径为6mm,总长度为150mm,本实施例中采用的长度为150mm,椎弓根钉5上下均设置有螺纹;其上部的螺纹长20mm,为普通螺纹,该螺纹上还套装有一组锁紧螺母4,且置于上边的锁紧螺母为球面锁紧螺母,其下边的螺母为平面锁紧螺母;其下部的螺纹长50mm,为松质骨螺纹。 Wherein: the diameter of the pedicle screw 5 is 6mm, the total length of 150mm, the length of the embodiment is used in the present embodiment 150mm, pedicle screw 5 is provided with a threaded vertical; Thread Length its upper 20mm, as the common thread, which there is also a set screw on the set of a lock nut 4, and the lock nut is placed on top of the spherical locking nut, which nut is a nut of the lower plane; thread length its lower 50mm, cancellous bone thread. 体外连杆3由螺纹套筒2和两个角度螺栓1构成,该螺纹套筒2内筒壁上设置有螺纹,且左右两边的螺纹旋向相反;角度螺栓1上的螺纹亦分别为正反螺纹,且通过螺纹旋接在螺纹套筒2两端,角度螺栓1端部的上下工作面与水平面之间的夹角为3度,且该角度螺栓1的端部为圆形结构,其内部设有用于套装在椎弓根钉6上的长圆形槽,且其圆周设有坡状圆弧凹槽4,用于放置球面锁紧螺母。 Vitro link 3 is constituted by two angles screw sleeve 2 and the bolt 1, which threaded sleeve is provided with a threaded cylinder wall 2, right and left sides of the opposite threaded; the threads on the bolt 1 also were positive and negative angles threaded, and screwed by the threaded connection between both ends of the sleeve 2, the upper and lower end face portion with a horizontal plane an angle 3 ° angle of the bolt, the bolt and the end angle of the structure 1 is circular, its internal It provided with oblong slots for placing on the pedicle screw 6, and an arc-shaped circumferential groove 4 has a groove, for placing the spherical locking nut.

[0012] 本发明通过延长椎弓根钉6的长度,在X线C型臂透视下经皮分别向患椎上下相邻的正常椎体的椎弓根拧入四枚加长的椎弓根钉6,即两组支架结构,体外用与AF相似的带有角度螺栓1的体外连杆3连接椎弓根钉6,通过角度螺栓1中的长圆形槽将其套入椎弓根钉6尾端后,把球面锁紧螺母5固定椎弓根钉6及角度螺栓1,使得球面锁紧螺母的球面正好置于凹槽4内,拧紧后使椎体得到良好的撑开,并为向椎体成形提供有利环境,在椎体复位的情况下,然后在X线C型臂透视下向患椎通过其椎弓根注入骨水泥,手术完毕后,再将该支架结构整体取下。 [0012] The present invention by extending the length of the pedicle screw 6, respectively screwed transdermal four elongated risk of vertebral pedicles to normal vertically adjacent vertebral pedicle screw in a C-arm X-ray fluoroscopy 6, i.e. the two frame structure, similar to the AF vitro vitro angled rod 3 of the bolt 1 is connected pedicle screw 6, in which an oblong slot set into the pedicle screw bolt 6 through an angle after the trailing end, the spherical locking nut 5 and 6 the angle of pedicle screw fixation bolt 1, so that the spherical locking nut just placed in the spherical recess 4, tighten the vertebral body to obtain a good distraction, and to the vertebroplasty provide an enabling environment, in the case of vertebral reset, then the C-arm X-ray fluoroscopy to the risk of vertebral pedicle through which bone cement is injected, after the operation is completed, and then remove the entire stent structure.

[0013] 根据椎体前中柱受压程度及受伤机制采用3度〜0度的角度螺栓1的体外连杆3 和长度为150〜160mm的椎弓根钉6,其中角度和长度呈反比配备,即效果最好的配比为角度螺栓1为3度,人椎弓根钉6长度为150mm。 [0013] The front pillar vertebral compression degree and mechanism of injury using a bolt angle of 3 ° ~ 0 vitro link 3 and a length of 1 150~160mm pedicle screw 6, wherein the length and inversely with the angle , i.e. the ratio of the best angle of the bolt 1 to 3, pedicle screw 6 people length 150mm. 其中:屈曲所致前柱压缩明显的采用3度体外连杆,垂直压缩所致的前中柱压缩明显的采用0度体外连杆。 Wherein: Column pre-compression induced buckling of in vitro using three distinct link, before the vertical compression due to significant compression column using 0 degrees vitro link.

Claims (1)

  1. 一种脊柱体外撑开椎弓根钉棒支架,包括两个椎弓根钉和一根体外连杆,所述椎弓根钉上下均设置有螺纹,其上部还套装有一组锁紧螺母;所述体外连杆由螺纹套筒和两个角度螺栓构成,该螺纹套筒内筒壁左右两边的螺纹旋向相反,两个角度螺栓上的螺纹分别为正反螺纹,且通过正反螺纹旋接在螺纹套筒两端,其特征在于,所述角度螺栓上下工作面与水平面之间的夹角为3度;所述椎弓根钉的总长度为150~160mm。 A spinal distraction vitro pedicle screw bracket comprises two pedicle screws and a rod in vitro, the pedicle screw is provided with a vertical threaded upper portion further has a set of lock nut set; the vitro said connecting rod bolt consists of two angles and the threaded sleeve, the inner cylindrical wall of the threaded sleeve is threaded to the left and right sides opposite to the threads on both positive and negative angles are threaded bolts, and the reverse screw is screwed by at both ends of the threaded sleeve, wherein the angle between the vertical face of the bolt and the horizontal angle of 3 degrees; a total length of the pedicle screw is 150 ~ 160mm.
CN 200910157691 2009-07-24 2009-07-24 External-distraction pedicle screw-rod bracket of vertebral body CN101612054B (en)

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* Cited by examiner, † Cited by third party
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
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
CN105832394A (en) * 2016-02-26 2016-08-10 邓宇 Posterior minimally invasive screw-rod fixation skin-outer resetting system for thoracolumbar vertebral fracture

Citations (7)

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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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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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