CN103860246B - And pedicle screw fixation system anterior thoracolumbar - Google Patents

And pedicle screw fixation system anterior thoracolumbar Download PDF

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Publication number
CN103860246B
CN103860246B CN201210537131.4A CN201210537131A CN103860246B CN 103860246 B CN103860246 B CN 103860246B CN 201210537131 A CN201210537131 A CN 201210537131A CN 103860246 B CN103860246 B CN 103860246B
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China
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anterior
screw
fixation system
pedicle screw
spacer
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CN201210537131.4A
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Chinese (zh)
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CN103860246A (en
Inventor
高耀平
田芳
林忠
陈伟
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上海微创骨科医疗科技有限公司
苏州微创脊柱创伤医疗科技有限公司
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Priority to CN201210537131.4A priority Critical patent/CN103860246B/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7044Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7049Connectors, not bearing on the vertebrae, for linking longitudinal elements together

Abstract

本发明提供一种椎弓根螺钉及胸腰椎前路内固定系统。 The present invention provides a pedicle screw fixation system and anterior thoracolumbar. 根据本发明的椎弓根螺钉包括具有内螺纹的头部和具有外螺纹的螺杆。 According to the present invention comprises a pedicle screw having a screw head portion having an internal thread and an external thread. 所述椎弓根螺钉还包括垫片,所述螺杆在接壤所述头部的一端设有周向凹槽,垫片卡扣在所述周向凹槽中,所述垫片可绕螺杆的纵向轴线相对于螺杆旋转,且垫片的上表面抵靠于头部的底表面。 The pedicle screw further comprises a spacer, said screw head portion is provided at an end border of the circumferential groove, the snap groove spacer, the spacer screw is rotatable about the longitudinal axis with respect to the circumferential screw rotation, and the upper surface of the pad against the bottom surface of the head. 根据本发明的椎弓根螺钉在拧入的同时将垫片压入椎体中,降低手术操作难度,减轻对患者的损伤,节约手术时间,增加植入物与椎体结合的牢固度。 The pedicle screw while the present invention will be screwed into the vertebral body in press pad, reducing the difficulty of the surgical procedure, reducing trauma to the patient, saving operation time, and the vertebral implant increased binding fastness. 根据本发明的胸腰椎前路内固定系统包括螺塞、连接棒和上述椎弓根螺钉。 The fixation system according to the present invention thoracolumbar anterior plug comprises a connecting rod and said pedicle screws.

Description

椎弓根螺钉及胸腰椎前路内固定系统 And pedicle screw fixation system anterior thoracolumbar

技术领域 FIELD

[0001]本发明涉及骨科植入物领域,具体涉及脊柱外科、诸如用于治疗或修复患者的脊柱疾病的植入物领域,特别涉及椎弓根螺钉及胸腰椎前路内固定系统。 [0001] The present invention relates to the field of orthopedic implants, particularly to spinal surgery, spinal implants, such as for field repair or treatment of diseases of a patient, particularly to a pedicle screw and thoracolumbar anterior fixation system.

背景技术 Background technique

[0002]治疗或修复患者的脊柱疾病的脊柱外科手术已有几十年的历史。 [0002] have decades of history of spinal surgery or repair in patients with spinal disorders. 目前,临床上用于脊柱内固定矫形,胸腰椎骨折、胸腰段脊柱肿瘤以及其它畸形等疾病需要进行脊柱前路手术内固定治疗时,医生通常根据患者情况选用前路或后路手术入路的方法。 Currently, clinically used for spinal fixation orthopedic fracture, thoracolumbar spine deformities and other diseases such as tumors require fixation with anterior spinal approach operation, the doctor usually used anterior or posterior surgical approach according to the condition of the patient Methods. 当脊柱前、中柱不稳、椎体病变、结核、肿瘤时,使用前路内固定可以明显增加脊柱在各个方向上的稳定性和剔除病变、重塑脊柱生理形态。 When the front of the spine, column instability, vertebral disease, tuberculosis, tumor, anterior fixation may be provided with a significant increase in stability of the spine in all directions and removing lesions, remodeling physiology of the spine.

[0003]前路减压及融合手术除了达到减压目的外,还能恢复椎间盘及椎间孔的高度,重建胸腰椎稳定性。 [0003] anterior decompression and fusion surgery in addition to achieve the purpose of decompression, but also to restore disc height and intervertebral foramen, the reconstruction of thoracic and lumbar stability. 前路植骨与内固定结合可为脊柱前路结构提供强有力的支持,并使脊柱恢复足够的稳定性。 Anterior fixation combined with bone graft can provide a strong support structure for the anterior spine, the spine and restore sufficient stability. 前路椎体间融合与后路融合相比,椎体间较大的接触面及丰富的血供提供了更为理想的植骨床,因而融合术的成功率更高。 Between anterior interbody fusion with posterior fusion compared interbody larger contact area and rich blood supply provides a more ideal bone bed, thus fusion higher success rate. 当后路融合手术失败后,前路融合术往往成为更为理想甚至唯一的选择。 When the posterior fusion surgery failed, anterior fusion surgery often become even more desirable only choice.

[0004]如图9所示,常规的胸腰椎前路固定系统包括:椎弓根螺钉4'、垫片5'、螺塞(未示出)、横联器3'、连接棒I'和2'。 [0004] As shown in FIG. 9, a conventional thoracolumbar anterior fixation system comprising: a pedicle screw 4 ', the spacer 5', the plug (not shown), a cross-linking 3 ', the connecting rod I' and 2'. 通过装配这样的钉棒系统使之与椎体结合成一个固定框架来稳定框架内需要治疗的脊柱节段。 By so fitting a screw system incorporated into a vertebral body to stabilize the spinal cage inner frame section need of treatment.

[0005]中国实用新型专利99232520X公开了一种胸腰椎前路复位固定装置,它包括撑杆、椎体螺钉、横桥夹片和门形脚板,其中支撑杆由连接管对接伸缩杆组成,支持杆与椎体螺钉由紧固螺钉垂直连接。 [0005] 99232520X Chinese utility model patent discloses an anterior thoracolumbar fixation means comprising struts, vertebral screws, clips and the gate-shaped cross-bridge foot, wherein the support rod is connected by a telescopic tube abutting rods, support vertebral rod by a fastening screw screwed perpendicularly.

[0006]中国实用新型专利CN 03236836.4公开了另一种脊柱前路多节段内固定矫形装置,该固定装置包含若干个用于拧入椎体的包含椎弓根螺钉、连接棒、缩紧螺塞和垫片,安装于每一垫片上的椎体螺钉至少有一个为万向螺钉。 [0006] Chinese utility model patent CN 03236836.4 discloses a multi-segmental anterior spinal fixation orthopedic device to another, the securing means comprises a plurality of connecting rods for screwing a vertebral body comprising a pedicle screw, tightening screw plugs and spacers, screws attached to the vertebrae of each spacer has at least one screw joint.

[0007]中国实用新型专利200920222845.X公开了又一种双孔双脚解剖形垫片及胸腰椎前路钉棒系统,该垫片是一马鞍形双弧垫片体,其长度和宽度方向上的截面均是弯曲的圆弧形,具有与人体椎体骨面吻合的椎体解剖表面,而该胸腰椎前路钉棒系统包括4个椎弓根螺钉、2个所述垫片、2根连接棒、1-2个横联器。 [0007] Chinese Utility Model Patent No. 200920222845.X discloses a further two-hole-shaped spacer feet anatomical anterior lumbar and thoracic pedicle screw, the spacer is a double arc saddle pad body, its length and width direction, on the cross section are curved arc-shaped, having a vertebral body and anatomical surfaces coincide vertebral bone surface, and the anterior thoracic and lumbar fixation system comprising four pedicle screws, the spacer 2, 2 connecting rods, cross-linking is 1-2.

[0008]中国实用新型专利201120387224.4公开了又一种胸腰椎前路内固定系统,包括:一对平行设置的第一、第二连杆,用于连接该第一、第二连杆的一对连接块,以及设于第一、第二连杆上的多个螺钉,其在常规的脊柱钉棒系统基础上增加圆弧形垫片和圆形垫片,垫片适用于提供10°的螺钉角度。 [0008] The Chinese utility model patent 201120387224.4 discloses a further inner thoracolumbar anterior fixation system, comprising: a first, a second pair of parallel links arranged, for connecting the first, the pair of second link connection block, and provided on a first, a second plurality of screws on the link, which increases the gasket and a circular arc-shaped pad on a regular basis with pedicle screw fixation system, adapted to provide the spacer screw 10 ° angle.

[0009]在如图9所示的现有胸腰椎前路内固定系统中,手术时需先将垫片5'敲入椎体,再将椎弓根螺钉4'沿垫片5'上的孔拧入椎体内。 [0009] In the conventional fixing system before thoracolumbar path shown in FIG. 9, the need to first pad 5 'knock vertebral body, and then pedicle screw 4' when the operation pad along the 5 ' screwed into the hole within the vertebral body. 敲打垫片的力度较难掌握,轻了敲不进去,重了会损伤脊髓。 Beat pads intensity is difficult to grasp, the light does not go knock, heavy damage to the spinal cord will.

发明内容 SUMMARY

[0010]本发明的目的是解决这一问题。 [0010] The object of the present invention is to solve this problem. 为此,本发明提出一种用于胸腰椎前路内固定系统中的椎弓根螺钉。 To this end, the invention proposes a pedicle screw fixation system anterior thoracolumbar is used. 所述椎弓根螺钉包括具有内螺纹的头部和具有外螺纹的螺杆,其特征在于,所述椎弓根螺钉还包括垫片,所述螺杆在接壤所述头部的一端设有周向凹槽,垫片卡扣在所述周向凹槽中,所述垫片可绕螺杆的纵向轴线相对于螺杆旋转,且所述头部的底表面抵靠于所述垫片的上表面。 The pedicle screw comprises a head and a screw having an external thread with an internal thread, wherein the pedicle screw further comprises a spacer, said screw is provided with a circumferential groove in the head end border , snap groove spacer, the spacer screw rotatable about the longitudinal axis in the circumferential relative rotation of the screw, and the bottom surface of the head against the upper surface of the spacer. 本发明的椎弓根螺钉简化和降低手术操作难度,因为手术时可以在拧入椎弓根螺钉的同时将垫片压入椎体中,原先的两个步骤可以合为一步,而且无需再敲打垫片,减轻对患者的损伤,节约手术时间。 The pedicle screw according to the present invention is to simplify and reduce the difficulty of the surgical procedure, because at the same time can be screwed into a pedicle screw in the vertebral body is pressed into the gasket during surgery, the original two steps can be combined into one step, and no longer beat gaskets, reducing trauma to the patient, time-saving surgery.

[0011] 优选地,所述头部的底表面为凸球面,所述垫片的上表面为凹球面。 [0011] Preferably, the bottom surface of the head portion has a convex spherical surface, the upper surface of the spacer concave spherical surface. 在此构造下,由于椎弓根螺钉的底部球面和垫片的顶部球面自动定心压入,其结合比较致密,固定后一期不会产生失稳现象。 In this configuration, since the top and bottom of the spherical washer pedicle screw is pressed into the spherical self-centering, which binds relatively dense, a phenomenon of instability does not occur after fixation. 另外,增加植入物与椎体结合的牢固度。 Further, the increase of the implant and vertebral binding fastness. 在拧入椎弓根螺钉时因垫片的抵抗力而使骨螺纹与椎体的结合轴向增加骨密度。 When pedicle screw is screwed into the spacer because of the resistance of the vertebral bone thread and increase bone density axially binding.

[0012]优选地,所述垫片的上表面沿径向设有弹性变形凹槽。 [0012] Preferably, the upper surface of the washer is provided with radially elastically deformable grooves.

[0013]本发明还提供一种胸腰椎前路内固定系统,其包括螺塞、连接棒,其特征在于,所述胸腰椎前路内固定系统还包括固定在连接棒上的多个如上所述的椎弓根螺钉,所述椎弓根螺钉通过其头部的内螺纹与相应的螺塞配合而固定在连接棒上。 [0013] The present invention further provides an internal thoracolumbar anterior fixation system, comprising a plug, a connecting rod, wherein said intrathoracic anterior lumbar fixation system further comprises a connecting rod secured on a plurality of the above of said pedicle screws, the pedicle screw is fixed to the connecting rod through the inner thread of the head with a corresponding mating plug.

[0014]本发明的内固定系统可用于脊柱侧弯前路内固定矫形,或胸腰椎骨折、胸腰段脊柱肿瘤以及其它脊柱畸形等疾病需要进行脊柱前路单节段或多节段手术内固定治疗。 [0014] The fixation system of the present invention may be used within the orthopedic fixation anterior scoliosis, or fracture, thoracolumbar tumors and other spinal deformities and other diseases of the spine is required within the first single-segment or segment surgery fixation.

[0015]根本发明的实施例,所述胸腰椎前路内固定系统为腰胸椎前路椎体间融合内固定系统,所述腰胸椎前路椎体间融合内固定系统包括两个连接棒,且还包括安装所述两个连接棒之间的至少一个横联器,每个连接棒上都固定有多个所述椎弓根螺钉。 [0015] Essential for the invention, said thoracolumbar anterior thoracic spinal fixation system between anterior interbody fusion internal fixation, fusion thoracic spinal fixation system between the two Anterior comprises connecting bars, and further comprising mounting the at least two cross-linking connection between a rod, are fixed pedicle screws on each of said plurality of connecting rods.

[0016]根本发明的实施例,所述胸腰椎前路内固定系统为脊柱前路内固定双棒矫形系统,其包括两个连接棒,每个连接棒上都固定有多个所述椎弓根螺钉。 [0016] The fundamental embodiment of the invention, dual rod orthopedic fixation system of the anterior spinal intrathoracic anterior lumbar fixation system, comprising two connecting rods are fixed to the arch on each of a plurality of connecting rods root screw.

[0017]根本发明的实施例,所述胸腰椎前路内固定系统为脊柱前路内固定单棒矫形系统,其包括单个连接棒。 Embodiment [0017] The fundamental embodiment of the invention, the intrathoracic anterior lumbar fixation system is a single rod secured anterior spinal orthotic system, which comprises a single connecting rod.

[0018]本发明的优势是降低手术操作难度,减轻对患者的损伤,节约手术时间,增加植入物与椎体结合的牢固度。 [0018] The advantage of the present invention to reduce the difficulty of the surgical procedure, reducing trauma to the patient, saving operation time, and the vertebral implant increased binding fastness.

附图说明 BRIEF DESCRIPTION

[0019]通过下面参照附图对本发明实施例进行的详细描述,本发明的特征及其优点将是显而易见的。 [0019] The following detailed description of embodiments of the present invention for the drawings, features and advantages of the invention will be apparent. 在图中: In the picture:

[0020]图1是本发明实施例的胸腰椎前路内固定系统的示意图,其显示为胸腰椎前路椎体间融合内固定系统。 [0020] FIG. 1 is a schematic view of the fixation system embodiment of the anterior thoracolumbar embodiment of the present invention, showing the integration of the breasts fixation system path lumbar vertebrae.

[0021]图2是本发明实施例的椎弓根螺钉的示意图。 [0021] FIG. 2 is a schematic diagram of the embodiment of the pedicle screw embodiment of the present invention.

[0022]图3是图2所示的椎弓根螺钉移除了垫片的情况下的示意图。 [0022] FIG. 3 is a pedicle screw shown in FIG. 2 a schematic view in the case where the removed shim.

[0023]图4是图2所示的椎弓根螺钉的垫片的示意图。 [0023] FIG. 4 is a schematic view of the pedicle screw shown in Figure 2 the gasket.

[0024]图5是本发明的垫片的另一实施例的示意图。 [0024] FIG. 5 is a schematic diagram of another pad embodiment of the present invention.

[0025]图6是本发明的垫片的另一实施例的示意图。 [0025] FIG. 6 is a schematic diagram of another pad embodiment of the present invention.

[0026]图7是脊柱如路内固定双棒矫形系统的不意图。 [0026] FIG. 7 is a fixed dual rod orthopedic spinal system is not intended as passage.

[0027]图8是脊柱前路内固定单棒矫形系统的示意图。 [0027] FIG. 8 is a schematic view of a single fixed rod orthotic system anterior spine.

[0028]图9是现有技术的脊柱前路钉棒系统的示意图。 [0028] FIG. 9 is a schematic anterior spinal fixation system of the prior art.

[0029]附图标记列表 [0029] List of reference numerals

[0030] 1、椎弓根螺钉的头部2、螺塞3、连接棒4、横联器5、垫片6、椎弓根螺钉的螺杆 [0030] 1, the head of the pedicle screw 2, plug 3, connecting rod 4, 5 cross-linking, the gasket 6, the pedicle screw screw

[0031] 7、凸球面8、周向凹槽 [0031] 7, 8 convex spherical surface, a circumferential groove

[0032] 9、凹球面10、弹性槽11、针脚 [0032] 9, the concave spherical surface 10, the elastic groove 11, the pin

[0033] I,连接棒2,连接棒3,横联器4,椎弓根螺钉5,垫片 [0033] I, 2 connecting rod, connecting rod 3, a cross joint 4, 5 of the pedicle screw, washer

具体实施方式 Detailed ways

[0034]下面参照附图描述本发明的实施例。 [0034] The following description with reference to the accompanying drawings of embodiments of the present invention.

[0035]图1示出了本发明的胸腰椎前路内固定系统的一个实施例。 [0035] FIG. 1 shows a thoracic lumbar spine fastening system of the present invention, an embodiment. 在本例中,胸腰椎前路内固定系统为胸腰椎前路椎体间融合内固定系统。 In the present embodiment, the thoracolumbar anterior fixation system between anterior thoracolumbar vertebrae fusion and internal fixation system. 该系统包括四个椎弓根螺钉,两个连接棒3和安装在连接棒3之间的一个横联器4,各椎弓根螺钉通过其头部I的内螺纹与相应的螺栓2的外螺纹配合而分别固定于两个连接棒3上,每个连接棒3上固定有两个椎弓根螺钉。 The system comprises four pedicle screws, two outer connecting bars 3 and a cross-linking is mounted between the connecting rod 3 of 4, each pedicle screw head portion through which a corresponding internal thread I of the screw 2 screwed respectively fixed to the two connecting rods 3, each connecting rod 3 is fixed to the two pedicle screws.

[0036]图2显示了本发明实施例的椎弓根螺钉。 [0036] FIG. 2 shows the pedicle screw embodiment of the present invention. 如图2所示,本发明实施例的椎弓根螺钉由两个零件组成,即垫片5和椎弓根螺钉。 2, the pedicle screw embodiment of the present invention consists of two parts, i.e., the spacer 5 and the pedicle screw. 如图3所示,椎弓根螺钉包括头部I和螺杆6,头部I具有内螺纹,且螺杆6与头部相接的螺纹根部设有周向凹槽8。 3, the pedicle screw includes a head and a screw 6 I, I head portion having an internal thread and the screw head 6 and the thread root in contact with a circumferential groove 8. 另外,头部I的底表面7构造成凸球面。 Further, the bottom surface of the head I is a convex spherical surface 7 is configured.

[0037]图4显示了垫片5的实施例。 [0037] FIG. 4 shows an embodiment of the spacer 5. 在本例中,垫片5为圆形,沿圆形的圆周布置有若干个针脚。 In the present embodiment, the gasket 5 is circular, has a number of pins arranged along a circumference of the circle. 另外,垫片5的上表面9构造成凹球面,以与椎弓根螺钉的头部I的底表面协作。 Further, the upper surface 9 of the pad 5 is configured concave spherical surface, with the bottom surface of the pedicle screw head I collaboration. 垫片5的上表面上还设有弹性槽10。 On the upper surface of the elastic pad 5 is also provided with grooves 10.

[0038]图5-图6显示了垫片的其它实施例。 [0038] FIGS. 5-6 show other embodiments of the gasket. 在图5中,垫片5为正方形,有4个针脚,分别布置在四个角部。 In FIG. 5, the gasket 5 as a square, with four pins, are disposed at the four corners. 在图6中,垫片5也为正方形,也有4个针脚,但是分别布置在四条边的中间位置。 In FIG. 6, the gasket 5 is also a square, has four pins, but are disposed at an intermediate position of the four sides.

[0039]垫片5沿椎弓根螺钉的螺杆6的螺纹末端旋入,随着螺杆6慢慢变粗,垫片5中的弹性槽10变形,到达螺纹根部的周向凹槽8处后,弹性槽10恢复原始状态,使垫片5被卡扣在周向凹槽8内,从而与椎弓根螺钉成为一体,但是仍可相对于螺杆6绕椎弓根螺钉的纵向轴线自由旋转,同时头部I的底表面7抵靠于垫片5的上表面9。 [0039] The gasket 5 along the pedicle screw is screwed into a screw threaded end 6, gradually thicker as the screw 6, the gasket 5 is deformed elastically grooves 10, circumferential thread roots reaches the backward of the recess 8, an elastic groove 10 to restore the original state, the spacer 5 is snapped into the groove 8 circumference, so that the pedicle screw is integrated, but still with respect to the screw 6 is free to rotate about the longitudinal axis of the pedicle screw, while the head I the bottom surface 7 against the upper surface 9 of the pad 5.

[0040]手术时,通过一个专门设计的上钉起子定位垫片5,并拧入椎弓根螺钉,使之与椎体结合。 [0040] When the operation by the staple driver 5 is positioned in a specially designed washer, and screwed into the screw, so that in combination with the vertebral body. 在拧入椎弓根螺钉时,由于椎弓根螺钉的螺杆6的凸球面7和垫片5的凹球面9相抵靠且螺杆6和垫片之间能够相对旋转,所以对垫片5施加压力,使垫片上的钉脚11被慢慢压入椎体内。 When screwed into the screw, the screw since the pedicle screw 7 and the convex spherical concave spherical washer 5 and 6 between the screw 9 against the gasket 6 and relatively rotatably by the, so to exert pressure on the gasket 5 the stud pin, the spacer 11 is gradually pushed into the vertebral body.

[0041]本发明的椎弓根螺钉还可用于不同的胸腰椎前路内固定系统,如图7所示的仅包括两个连接棒的脊柱前路内固定双棒矫形系统和图8所示的包括单个连接棒的脊柱前路内固定单棒矫形系统。 [0041] The pedicle screw according to the present invention can be used in different way before the thoracolumbar fixation system as dual rod orthopedic fixation system and anterior spinal column comprises only two connecting rods 7 shown in FIG. 8 single orthopedic rod comprises a fixed connecting rod system within a single anterior spine.

[0042]本发明将常规胸腰椎前路内固定系统中的椎弓根螺钉和垫片合成一体,形成一种新型椎弓根螺钉。 [0042] The present invention is within a conventional pedicle screw fixation system anterior thoracolumbar and the spacer integrally formed a new type of pedicle screw. 这一构造简化和降低手术操作难度。 This simplified structure and reducing the difficulty of the surgical procedure. 原手术步骤是先将垫片敲入椎体,再将椎弓根螺钉沿垫片上的孔拧入椎体内,敲打垫片的力度较难掌握,轻了敲不进去,重了会损伤脊髓。 Surgery is the first step of the original vertebral body spacer knock, and then pedicle screw hole screwed into the vertebral body along the gasket, the gasket beat intensity more difficult to master, the light does not go knock, heavy damage spinal cord. 现在是拧入新型椎体螺钉的同时将垫片压入椎体中,两步骤合成一步,无需敲打垫片,减轻对患者的损伤,节约手术时间。 Now new vertebral screw is screwed while the spacer is pressed into the vertebral body, the two steps of the synthesis step, without beating spacer, reduce the trauma to the patient, saving operation time.

[0043] 2、增加植入物与椎体结合的牢固度。 [0043] 2, increased binding vertebral implant fastness. 在拧入新型椎体螺钉时因垫片的抵抗力使骨螺纹与椎体的结合轴向会增加骨密度,固定后一期不会产生失稳现象。 When the screw is screwed into the vertebral body due to new bone screw washer resistance combined with vertebral bone density increases axially, an instability phenomenon does not occur after fixation.

[0044]本领域技术人员可以理解,以上描述只是示例性的。 [0044] Those skilled in the art will appreciate, the foregoing description is only exemplary. 在不背离本发明的思想和范围的情况下,本领域技术人员可以对本发明作出多种修改和变化。 Without departing from the spirit and scope of the present invention, those skilled in the art that numerous modifications and variations of the present invention.

Claims (5)

1.椎弓根螺钉,其包括具有内螺纹的头部和具有外螺纹的螺杆,其特征在于,所述椎弓根螺钉还包括垫片,所述螺杆在接壤所述头部的一端设有周向凹槽,垫片卡扣在所述周向凹槽中,所述垫片能够绕螺杆的纵向轴线相对于螺杆旋转,且所述头部的底表面抵靠于所述垫片的上表面,所述头部的底表面为凸球面,所述垫片的上表面为凹球面,且所述垫片的上表面沿径向设有弹性槽。 1. pedicle screw, comprising a head portion having an internal thread and a screw having an external thread, wherein the pedicle screw further comprises a spacer, said screw is provided at an end of said head portion bordering a circumferential groove, the snap groove spacer, the spacer can be about the periphery of the screw with respect to the longitudinal axis of screw rotation, and the bottom surface of the head against the upper surface of the gasket, the the bottom surface of the head into a convex spherical surface, the upper surface of the washer is concave spherical surface, and the upper surface of the pad is provided with grooves radially resilient.
2.胸腰椎前路内固定系统,其包括螺塞、连接棒,其特征在于,所述胸腰椎前路内固定系统还包括固定在连接棒上的多个如权利要求1所述的椎弓根螺钉,所述椎弓根螺钉通过其头部的内螺纹与相应的螺塞配合而固定在连接棒上。 2. the thoracic anterior lumbar fixation system, comprising a plug, a connecting rod, wherein said intrathoracic anterior lumbar fixation system further comprises a plurality of connecting rods is fixed to the vertebral arch as claimed in claim 1 of screws, the pedicle screw is fixed to the connecting rod through the inner thread of the head with a corresponding mating plug.
3.根据权利要求2所述的胸腰椎前路内固定系统,其特征在于,所述胸腰椎前路内固定系统为腰胸椎前路椎体间融合内固定系统,所述腰胸椎前路椎体间融合内固定系统包括两个连接棒,且还包括安装所述两个连接棒之间的至少一个横联器,每个连接棒上都固定有多个所述椎弓根螺钉。 The anterior thoracolumbar fixation system according to claim 2, wherein said thoracolumbar anterior fixation system between lumbar fusion and internal fixation system Anterior thoracic, the anterior thoracic lumbar vertebra fusion between the fixation system comprises two connecting rods, and further comprising mounting the at least two cross-linking connection between a rod, are fixed pedicle screws on each of said plurality of connecting rods.
4.根据权利要求2所述的胸腰椎前路内固定系统,其特征在于,所述胸腰椎前路内固定系统为脊柱前路内固定双棒矫形系统,其包括两个连接棒,每个连接棒上都固定有多个所述椎弓根螺钉。 4. The anterior thoracolumbar fixation system according to claim 2, characterized in that the fixing system is a dual rod orthopedic anterior lumbar spine the intrathoracic anterior fixation system, comprising two connecting rods, each It is fixed to a plurality of said rod connecting pedicle screws.
5.根据权利要求2所述的胸腰椎前路内固定系统,其特征在于,所述胸腰椎前路内固定系统为脊柱前路内固定单棒矫形系统,其包括单个连接棒。 The anterior thoracolumbar fixation system according to claim 2, wherein said intrathoracic anterior lumbar fixation system is a single rod secured within the anterior spinal orthotic passage system, which comprises a single connecting rod.
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PCT/CN2013/088731 WO2014090114A1 (en) 2012-12-12 2013-12-06 Pedicle screw and anterior thoracic/lumbar vertebral internal fixation system

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CN104970874B (en) * 2015-07-24 2018-07-20 王清 Anatomical pedicle screw
CN107041800A (en) * 2017-01-21 2017-08-15 张洪剑 Novel split type artificial vertebra device

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