CN103040511B - Self-locking type anterior cervical vertebra plate - Google Patents

Self-locking type anterior cervical vertebra plate Download PDF

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Publication number
CN103040511B
CN103040511B CN 201210577276 CN201210577276A CN103040511B CN 103040511 B CN103040511 B CN 103040511B CN 201210577276 CN201210577276 CN 201210577276 CN 201210577276 A CN201210577276 A CN 201210577276A CN 103040511 B CN103040511 B CN 103040511B
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China
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cervical
circlip
screw
sleeve
provided
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CN 201210577276
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Chinese (zh)
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CN103040511A (en
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顾鑫磊
吴剑
金桃
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苏州欣荣博尔特医疗器械有限公司
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Priority to CN 201210577276 priority Critical patent/CN103040511B/en
Publication of CN103040511A publication Critical patent/CN103040511A/en
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Abstract

本发明公开了一种使用非常方便的自锁式颈椎前路板,包括:其上两侧部位分别设置有一对颈椎螺钉孔的钢板本体,每对颈椎螺钉孔之间的钢板本体上分别设置有一个带卡簧套的安装孔,每个卡簧套的顶部固定连接有卡簧挡圈,卡簧安装在卡簧挡圈内侧的卡簧套上,在每个安装孔的顶部外壁上分别设置有容纳卡簧和卡簧挡圈的环形凹槽,每个环形凹槽与位于其两侧的颈椎螺钉孔相互交汇贯通,使得卡簧的两个卡爪臂能从环形凹槽中分别伸入两侧的颈椎螺钉孔中,并且伸入颈椎螺钉孔中的卡爪臂能遮挡在安装于颈椎螺钉孔中的颈椎螺钉钉帽的外侧;卡簧的两个卡爪臂与卡簧套外壁之间设置有间隙;安装孔与卡簧套之间还设置有能将两者相互卡接的卡锁结构。 The present invention discloses a convenient self-locking anterior cervical plate, comprising: a portion which on both sides are provided with a pair of screw holes cervical plate main body, are provided on the steel plate of the body between each pair of screw holes cervical a belt mounting hole circlip sleeve, the top of each sleeve is fixedly connected with a circlip circlip ring, circlip circlip ring mounted on the inner sleeve of the clamp spring, are provided on the outer wall of the top of each mounting hole an annular groove receiving the circlip and the circlip ring, each annular groove and cervical screw holes located on both sides of each other through the intersection, so that the two jaws of the clamp spring arms respectively extend into the annular groove from cervical both sides of the screw hole, the pawl arm extending into the cervical spine and the screw holes in the outer shield can be attached to the screw holes cervical cervical screw nut; the two clamping spring arms and claws cover the outer wall of the clamping spring a gap is provided between; further provided between the mounting hole and the snap spring sleeve can have two cards each contact latching structure.

Description

自锁式颈椎前路板 Self-locking anterior cervical plate

技术领域 FIELD

[0001] 本发明涉及医疗器械领域,尤其涉及一种内固定手术治疗颈椎病变时所使用的颈椎前路板。 [0001] The present invention relates to the field of medical devices, and particularly to the anterior cervical plate fixation when an internal surgical treatment of cervical lesions used.

背景技术 Background technique

[0002] 遗传、发育异常、创伤、慢性应激以及肿瘤和其它疾病会导致脊柱的病理状况,这降低了脊柱的柔韧性,限制了脊柱的运动范围。 [0002] genetic, developmental abnormalities, trauma, chronic stress as well as tumors and other diseases may lead to pathologic conditions of the spinal column, which reduces the flexibility of the spine, limiting the range of motion of the spine. 采用外科内固定手术对上述病理状况进行治疗是目前医学上常用的治疗方法。 Use of surgical fixation for treatment of pathological conditions described above is commonly used in medical treatment. 颈椎前路板主要用于内固定手术治疗颈部椎间盘退变性疾病、颈椎滑脱、颈椎管狭窄、颈椎肿瘤、颈椎关节融合失败、颈椎假关节形成、颈椎畸形等。 Anterior cervical plate is mainly used for internal fixation neck degenerative disc disease, spondylolisthesis cervical spine, cervical spinal canal stenosis, cervical cancer, cervical arthrodesis failure, pseudarthrosis cervical spine, cervical spine malformations. 采用颈椎前路板内固定是颈椎前路手术稳定颈椎的较好的方法,它能牢固固定植骨块,促进融合,有效维持病变颈椎的自然生理弯曲,恢复颈椎的正常生理机能。 Using the anterior cervical plate fixation is the preferred method of cervical spine surgery anterior cervical stabilization, it is firmly fixed graft, promote integration, effective to maintain the natural physiological curvature cervical lesions, cervical restore normal physiological function. 传统的颈椎前路板,其结构包括:钢板本体,在钢板本体上的两侧分别设置有一对颈椎螺钉孔,每对颈椎螺钉孔之间的钢板本体上均设置有可旋转的盖帽,盖帽上设置有凸缘,每个盖帽上的凸缘均能阻挡在手术后设置于对应一侧的两个颈椎螺钉孔中的颈椎螺钉钉帽的外侧。 Conventional anterior cervical plate, the structure comprising: a steel body, both sides in the steel body are respectively provided with a pair of screw holes cervical, provided with a rotatable cap on the body between each pair of the steel sheet cervical screw hole on the cap is provided with a flange on the outside of each cap can cervical barrier of two cervical screw nut screw holes after the operation is provided in the corresponding side. 上述结构的颈椎前路板的使用方法是:将颈椎螺钉穿过颈椎螺钉孔后安装于所需要的患病部位,颈椎螺钉安装好后,使用相应地工具旋转盖帽,使盖帽上的凸缘阻挡在颈椎螺钉钉帽的外侧,用来防止颈椎螺钉发生松动并从颈椎螺钉孔中退出。 Use anterior cervical plate of the above structure are: the screw through the cervical cervical screw Konghou An apparatus required to diseased site, cervical screw is installed, using a corresponding tool to rotate the cap, the cap flange on the barrier cervical screw nut on the outer side of the screw to prevent loosening of the cervical spine and withdrawn from cervical screw holes. 上述结构的颈椎前路板的缺点是:手术中旋紧颈椎螺钉后还必须再旋转盖帽才能将颈椎螺钉锁定,操作时比较繁琐。 Disadvantage of the above configuration anterior cervical plate is: cervical surgery tighten the screws must be further rotated to the cervical cap screw lock, cumbersome operation.

发明内容 SUMMARY

[0003] 本发明需要解决的技术问题是:提供一种使用非常方便的自锁式颈椎前路板。 [0003] The present invention is a technical problem to be solved: to provide a very easy to use self-locking anterior cervical plate.

[0004] 为解决上述问题,本发明采用的技术方案是:自锁式颈椎前路板,包括:钢板本体,钢板本体上的两侧部位分别设置有一对用以安装颈椎螺钉的颈椎螺钉孔,每对颈椎螺钉孔之间的钢板本体上分别设置有一个安装孔,在每个安装孔中分别安装有一个卡簧套,每个卡簧套的顶部固定连接有卡簧挡圈,卡簧位于卡簧挡圈内侧、并套装在卡簧套上,在每个安装孔的顶部外壁上分别设置有容纳卡簧和卡簧挡圈的环形凹槽,每个环形凹槽与位于其两侧的颈椎螺钉孔相互交汇贯通,使得卡簧的两个卡爪臂能从环形凹槽中分别伸入两侧的颈椎螺钉孔中,并且伸入颈椎螺钉孔中的卡爪臂能遮挡在安装于颈椎螺钉孔中的颈椎螺钉钉帽的外侧;卡簧的两个卡爪臂与卡簧套外壁之间设置有间隙,使得在颈椎螺钉安装于颈椎螺钉孔的过程中,卡簧的两个卡爪臂能往卡簧套 [0004] In order to solve the above problems, the present invention adopts the technical scheme is: self-locking anterior cervical plate, comprising: a steel body, both sides of the body portion of the steel sheet are provided with a pair of screw holes for mounting cervical cervical screw, between the steel sheet body cervical screw holes are provided for each pair has a mounting hole, each mounting hole has a circlip mounted in each sleeve, the top of each sleeve is fixedly connected with a circlip circlip ring, circlip located circlip inner ring and the circlip suit sleeve, the walls are provided with a recess receiving the annular circlip circlip ring and the outer top of each mounting hole, each annular groove and located on both sides of the cervical screw holes through the intersection to each other, such that the two clamping spring arms from the jaws, respectively, extend into the annular groove on both sides of the cervical screw hole, the pawl arm extending into the cervical spine and the screw holes can be attached to the cervical obscured cervical outer screw nut screw holes; gap is provided between the two arms and claws cover the outer wall of the circlip circlip, so that in the process of the cervical cervical screw mounting screw holes in the two jaws circlip arm is to cover the circlip 边避让而不会阻碍颈椎螺钉钉帽的前行,直至颈椎螺钉钉帽往旁边挤拨卡爪臂并越过卡爪臂后,卡爪臂又弹性复位、并遮挡在颈椎螺钉钉帽的外侧;在安装孔与卡簧套之间还设置有能将两者相互卡接的卡锁结构。 After the front edge without hindering the escape cervical screw nut until the nut screw cervical Pultruded pawl arm aside and over the pawl arm, the pawl arm and elastic return, and blocks the outside of the cervical screw nut; between the hole and the mounting sleeve is also provided with the clamp spring can engage with each other both contact locking structure.

[0005] 进一步地,前述的自锁式颈椎前路板,其中,所述的卡锁结构的具体形式为:在安装孔的底部外壁上对称设置有两条卡槽,在卡簧套的侧壁上对称设置有两条横向长形通孔,在长形通孔下方的卡簧套侧壁上设置有切断该处侧壁的竖向开口,使得位于竖向开口两边的卡簧套侧壁形成两个卡脚,当卡簧套安装于安装孔中后,向外涨开卡脚,使卡脚正好卡入安装孔底部外壁上的卡槽中,从而将卡簧套卡锁于安装孔中。 [0005] Further, the aforementioned self-locking anterior cervical plate, wherein said latching structure specific forms of: symmetrically disposed on an outer wall of the bottom mounting hole has two slots, the sleeve-side circlip two lateral walls arranged symmetrically with a elongated through-hole, there is provided a cutting vertical sidewall opening in the sidewall of sleeve circlip below the elongated through-hole, so that the clamping spring sleeve openings on both sides of the vertical sidewalls two tabs are formed, when the circlip is mounted on the cover mounting hole, outwardly open up the catches, the catches so that just snapped into mounting slots in the outer wall of the bottom of the hole, thereby locking the mounting hole circlip Taoka in.

[0006] 进一步地,前述的自锁式颈椎前路板,其中,所述的安装孔位于每对颈椎螺钉孔之间的正中位置。 [0006] Further, the aforementioned self-locking anterior cervical plate, wherein said mounting holes are located in the middle position between each pair of cervical screw holes.

[0007] 进一步地,前述的自锁式颈椎前路板,其中,卡簧挡圈上设置有避让颈椎螺钉钉帽的圆弧形缺口。 [0007] Further, the aforementioned self-locking anterior cervical plate, which is provided with a relief cervical screw nut cutout on the circular arc-shaped circlip ring.

[0008] 本发明的有益效果:颈椎螺钉安装于颈椎螺钉孔的过程中,卡簧的两个卡爪臂能往卡簧套那边避让而不会阻碍颈椎螺钉钉帽的前行,直至颈椎螺钉钉帽往旁边挤拨卡爪臂并越过卡爪臂后,卡爪臂又弹性复位、并遮挡在颈椎螺钉钉帽的外侧,从而起到有效防止颈椎螺钉松动并退出的作用,整个操作过程十分方便。 [0008] Advantageous effects of the invention: during the cervical cervical screw mounting screw holes, the two jaws clamping spring arm is set to the side of the circlip does not hinder the escape and before the nut screw cervical until cervical after the screw nut sideways Pultruded pawl arm and over the pawl arm, the pawl arm and elastic return, and blocks outside the cervical screw nut, and thus play a role to effectively prevent cervical screw loosening and exit, the entire operation very convenient.

附图说明 BRIEF DESCRIPTION

[0009] 图1是本发明所述的自锁式颈椎前路板中钢板本体的结构示意图。 [0009] FIG. 1 is a schematic structural steel body self-locking anterior cervical plate according to the present invention.

[0010] 图2是钢板本体上脊椎螺钉孔和安装孔的横断面结构示意图。 [0010] FIG. 2 is a cross sectional view taken vertebral screw and the mounting holes on the steel sheet body.

[0011]图3是本发明所述的自锁式颈椎前路板中卡簧套的结构示意图。 [0011] FIG. 3 is a schematic view of the self-locking anterior cervical plate circlip sleeve according to the present invention.

[0012] 图4是图3俯视方向的结构示意图。 [0012] FIG. 4 is a schematic diagram of FIG. 3 is a plan direction.

[0013] 图5是图3仰视方向的结构示意图。 [0013] FIG. 5 is a schematic view of a bottom direction of FIG. 3 in.

[0014]图6是本发明所述的自锁式颈椎前路板中卡簧的结构示意图。 [0014] FIG. 6 is a schematic structural diagram of the self-locking anterior cervical plate according to the present invention the circlip.

[0015] 图7是本发明所述的自锁式颈椎前路板的结构示意图。 [0015] FIG. 7 is a schematic view of the self-locking anterior cervical plate structure according to the present invention.

具体实施方式 Detailed ways

[0016] 下面结合附图和最优实施方式对本发明作进一步地详细说明。 [0016] The present invention will be described in further detail in conjunction with the accompanying drawings and the best mode.

[0017] 如图1、图2、图3、图4、图5、图6、图7所示,自锁式颈椎前路板,包括:钢板本体1,钢板本体I上的两侧部位分别设置有一对用以安装颈椎螺钉的颈椎螺钉孔2,每对颈椎螺钉孔2之间的正中位置处的钢板本体上分别设置有一个安装孔3,在每个安装孔3中分别安装有一个卡簧套4,每个卡簧套4的顶部固定连接有卡簧挡圈5,卡簧6位于卡簧挡圈5内侧、并套装在卡簧套4上,在每个安装孔3的顶部外壁上分别设置有容纳卡簧6和卡簧挡圈5的环形凹槽7,每个环形凹槽7与位于其两侧的颈椎螺钉孔2相互交汇贯通,使得卡簧6的两个卡爪臂61能从环形凹槽7中分别伸入两侧的颈椎螺钉孔2中,并且伸入颈椎螺钉孔2中的卡爪臂61能遮挡在安装于颈椎螺钉孔2中的颈椎螺钉钉帽的外侧;卡簧6的两个卡爪臂61与卡簧套4外壁之间设置有间隙,使得在颈椎螺钉安装于颈椎螺钉孔2的过程 [0017] 1, 2, 3, 4, 5, 6, as shown, self-locking anterior cervical plate 7, comprising: a steel body, both sides of the body portion of the steel plate I, respectively a card provided with a pair of screw holes for mounting cervical cervical screws 2, each of the screw holes on the steel sheet of the cervical spine at the middle position between the body 2 are provided with a mounting hole 3 in each of the mounting holes 3 are respectively mounted spring sleeve 4, the top of each clamping spring sleeve 4 is fixedly connected with a circlip ring 5, 6 circlip circlip ring located in the inner side 5, and fit over the snap spring sleeve 4, the outer wall at the top of each mounting hole 3 receiving the circlip 6 are provided with a circlip retaining ring 5 and the annular groove 7, each annular groove 7 and the cervical screw holes 2 are located on both sides thereof through the intersection, so that the two jaws clamp spring arm 6 61 from the outer annular groove 7 respectively extend into the screw holes on both sides of the cervical spine 2, and extends into the screw holes cervical pawl arm 61 of the shutter 2 can be mounted in the cervical screw nut screw holes in the cervical 2 ; circlip is provided with a gap between the two jaws 61 and the clamping spring arms 4 outer wall sleeve 6, so that the process of the cervical cervical screw mounting screw holes 2 中,卡簧6的两个卡爪臂61能往卡簧套4那边避让而不会阻碍颈椎螺钉钉帽的前行,直至颈椎螺钉钉帽往旁边挤拨卡爪臂61并越过卡爪臂61后,卡爪臂61又弹性复位、并遮挡在颈椎螺钉钉帽的外侧;安装孔3与卡簧套4之间还设置有能将两者相互卡接的卡锁结构,所述的卡锁结构的具体形式为:在安装孔3的底部外壁上对称设置有两条卡槽31,在卡簧套4的侧壁上对称设置有两条横向长形通孔41,在长形通孔41下方的卡簧套4侧壁上设置有切断该处侧壁的竖向开口42,使得位于竖向开口42两边的卡簧套侧壁形成两个卡脚43,当卡簧套4安装于安装孔3中后,向外涨开卡脚43,使卡脚43正好卡入安装孔3底部外壁上的卡槽31中,从而将卡簧套4卡锁于安装孔3中。 , The two clamping spring arms 616 of the jaws to clamp spring sleeve 4 there can escape without obstructing forward cervical screw nut until the nut screw cervical sideways Pultruded pawl arm 61 and over the jaw after the arm 61, the pawl arm 61 and elastic return, and blocks outside the cervical screw nut; a mounting hole between the sleeve 3 and the clamp spring 4 is also provided with two locking structure capable of mutual contact card, said specific forms latching structure is: the bottom of the mounting hole on the outer wall 3 is provided with two symmetrically laterally elongated slot 31 through two holes in the side walls snap spring sleeve 4 is provided symmetrically with a 41, through the elongated there is provided a cutting opening 42 on the vertical sidewalls of the clamp spring sleeve 4 under the side wall aperture 41, such that the vertical sidewalls of the clamping spring sleeve 42 on either side of the opening two catches 43, when the sleeve 4 is mounted circlip after the mounting hole 3, outwardly open up the catches 43, so that the card just snapped into mounting slots 43 feet outside the bottom of the hole 31 in the wall 3, 4 so that the circlip latch sleeve installation hole 3. 本实施例中卡簧挡圈5上设置有避让颈椎螺钉钉帽的圆弧形缺口51,以便颈椎螺钉的安装。 Examples circlip ring 5 is provided on the screw nut with a relief cervical arc-shaped notch 51 embodiment, the mounting screws to the cervical spine.

[0018] 本发明的有益效果:颈椎螺钉安装于颈椎螺钉孔2的过程中,卡簧6的两个卡爪臂61能往卡簧套4那边避让而不会阻碍颈椎螺钉钉帽的前行,直至颈椎螺钉钉帽往旁边挤拨卡爪臂61并越过卡爪臂61后,卡爪臂61又弹性复位、并遮挡在颈椎螺钉钉帽的外侧,从而起到有效防止颈椎螺钉退出的作用,整个操作过程十分方便。 Cervical screws attached to the front during cervical screw hole 2, the two clamping spring arms 616 of the jaws to clamp spring sleeve 4 there can escape without hindering cervical screw nut of: [0018] Advantageous effects of the present invention. after the row, aside until cervical screw nut Pultruded pawl arm 61 and arm 61 over the pawl, the pawl arm 61 and elastic return, and blocks the outside of the cervical screw nut, the screw thus play effectively prevent cervical exit effect, the whole operation is very convenient.

Claims (3)

1.自锁式颈椎前路板,包括:钢板本体,钢板本体上的两侧部位分别设置有一对用以安装颈椎螺钉的颈椎螺钉孔,每对颈椎螺钉孔之间的钢板本体上分别设置有一个安装孔,其特征在于:在每个安装孔中分别安装有一个卡簧套,每个卡簧套的顶部固定连接有卡簧挡圈,卡簧位于卡簧挡圈内侧、并套装在卡簧套上,在每个安装孔的顶部外壁上分别设置有容纳卡簧和卡簧挡圈的环形凹槽,每个环形凹槽与位于其两侧的颈椎螺钉孔相互交汇贯通,使得卡簧的两个卡爪臂能从环形凹槽中分别伸入两侧的颈椎螺钉孔中,并且伸入颈椎螺钉孔中的卡爪臂能遮挡在安装于颈椎螺钉孔中的颈椎螺钉钉帽的外侧;卡簧的两个卡爪臂与卡簧套外壁之间设置有间隙,使得在颈椎螺钉安装于颈椎螺钉孔的过程中,卡簧的两个卡爪臂能往卡簧套那边避让而不会阻碍颈椎螺钉钉帽的 1. Self-locking anterior cervical plate, comprising: a steel body, both sides of the body portion of the steel sheet are provided with a pair of screw holes for mounting cervical cervical screw, are provided on the steel plate of the body between each pair of screw holes cervical a mounting hole, characterized in that: in each mounting hole there are respectively mounted a circlip sleeve, the top of each sleeve is fixedly connected with a circlip circlip ring, circlip circlip ring located inside and set in the card spring sleeve is provided with a recess receiving the annular circlip circlip ring and the outer wall of the top of each mounting hole, respectively, with each annular groove cervical screw holes located on both sides of each other through the intersection, so that the clamping spring the two arms from the jaws, respectively, extend into the annular groove on both sides of the cervical screw hole, the pawl arm extending into the cervical spine and the screw holes in the outer shield can be attached to the cervical cervical screw holes of the screw nut ; gap is provided between the two arms and claws cover the outer wall of the circlip circlip, so that in the process of the cervical cervical screw mounting screw holes, the two clamping spring arms jaws there can be set to avoid the circlip not obstruct the cervical cap screw nails 前行,直至颈椎螺钉钉帽往旁边挤拨卡爪臂并越过卡爪臂后,卡爪臂又弹性复位、并遮挡在颈椎螺钉钉帽的外侧;在安装孔与卡簧套之间还设置有能将两者相互卡接的卡锁结构;所述的卡锁结构的具体形式为:在安装孔的底部外壁上对称设置有两条卡槽,在卡簧套的侧壁上对称设置有两条横向长形通孔,在长形通孔下方的卡簧套侧壁上设置有切断该处侧壁的竖向开口,使得位于竖向开口两边的卡簧套侧壁形成两个卡脚,当卡簧套安装于安装孔中后,向外涨开卡脚,使卡脚正好卡入安装孔底部外壁上的卡槽中,从而将卡簧套卡锁于安装孔中。 After forward, sideways until cervical screw nut Pultruded pawl arm and over the pawl arm, the pawl arm and elastic return, and blocks the outside of the cervical screw nut; further provided between the mounting hole and the snap spring sleeve each card can have both contact locking structure; the specific form of latching structure is: the bottom of the outer wall of the mounting hole symmetrically disposed with two slots, disposed symmetrically on the side wall of the sleeve has a clamping spring two laterally elongated through-hole in the sidewall of sleeve circlip below the elongated through-hole is provided with a vertical side wall where the cutting opening, such that the vertical sidewalls of the opening of the clamp spring sleeve forming two sides of the catches when the cover is attached to the snap spring mounting hole, outwardly open up the catches, the catches so that just snapped into mounting slots in the outer wall of the bottom of the hole, thereby locking the snap spring mounting hole in the sleeve clamp.
2.根据权利要求1所述的自锁式颈椎前路板,其特征在于:所述的安装孔位于每对颈椎螺钉孔之间的正中位置。 The self-locking anterior cervical plate according to claim 1, wherein: said mounting holes are located in the middle position between each pair of cervical screw holes.
3.根据权利要求1或2所述的自锁式颈椎前路板,其特征在于:卡簧挡圈上设置有避让颈椎螺钉钉帽的圆弧形缺口。 The self-locking anterior cervical plate of claim 1 or claim 2, wherein: the arc-shaped notch is provided with a relief cervical screw nut on the clamp spring ring.
CN 201210577276 2012-12-27 2012-12-27 Self-locking type anterior cervical vertebra plate CN103040511B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006913A4 (en) * 1997-02-11 2001-10-31 Michelson Gary K Anterior cervical plating system, instrumentation, and method of installation
CN1366866A (en) * 2002-01-17 2002-09-04 蒋谊康 Cervical front-side sheet steel bone screw anti-releasing device
CN1575780A (en) * 2003-07-22 2005-02-09 U&I公司 Cervical spine fixator and screwdriver used therefor
CN201295280Y (en) * 2008-11-10 2009-08-26 常州奥斯迈医疗器械有限公司 Anterior locking cervical plate system
CN203089334U (en) * 2012-12-27 2013-07-31 苏州欣荣博尔特医疗器械有限公司 Self-lock type cervical spine anterior plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006913A4 (en) * 1997-02-11 2001-10-31 Michelson Gary K Anterior cervical plating system, instrumentation, and method of installation
CN1366866A (en) * 2002-01-17 2002-09-04 蒋谊康 Cervical front-side sheet steel bone screw anti-releasing device
CN1575780A (en) * 2003-07-22 2005-02-09 U&I公司 Cervical spine fixator and screwdriver used therefor
CN201295280Y (en) * 2008-11-10 2009-08-26 常州奥斯迈医疗器械有限公司 Anterior locking cervical plate system
CN203089334U (en) * 2012-12-27 2013-07-31 苏州欣荣博尔特医疗器械有限公司 Self-lock type cervical spine anterior plate

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