CN205073000U - 颈椎单向椎间融合固定装置 - Google Patents
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Abstract
本实用新型涉及一种新型的颈椎单向椎间融合固定装置。本实用新型所述的颈椎单向椎间融合固定装置包括前端的螺钉固定部与后端的椎间融合部；所述螺钉固定部的左、右两侧分别设置对称分布的螺孔，所述螺孔是倾斜的以致螺钉能通过所述螺孔将所述椎间融合部固定于脱位小关节的下节椎体的终板上；所述螺孔之间设置有锁定装置，用于将插入所述螺孔的螺钉锁住以免螺钉脱出，以致所述椎间融合部被适合放置在颈椎双侧小关节脱位复位后两椎体之间，用于替代颈椎手术中摘除的椎间盘。该装置能减少颈椎手术的复杂性，达到更好的稳定固定效果，并减少对患者的创伤。
Description
技术领域
本实用新型涉及一种骨科临床器械，尤其涉及一种颈椎单向椎间融合固定装置。
背景技术
对于颈椎损伤来说，尤其以外伤性的上下关节面完全性脱位较为严重，常见于颈5/6和颈6/7，而手术治疗后的疗效则会受多种因素的影响，其中包括神经损伤、椎间盘的脱位、终板的断裂、颈椎关节的脱位以及严重的后纵韧带损伤，还有复位方法的选择以及成功与否，手术者的经验等。手术方法包括单纯前路手术、单纯后路手术、前路-后路手术、后路-前路手术以及前路-后路-前路手术，而最常用的手术方式为前路-后路手术，尤其是用于双侧颈椎关节脱位伴间盘破裂髓核突出压迫脊髓的患者，为完成后路的有效直接复位，前路只行减压单向固定方式，其包括钢板固定、非特定的钢板螺钉固定，甚至只行单纯的前路减压如碎块状松质骨填充。以上前路-后路手术方式中，前路减压后不行固定显然使得患者再翻身做后路固定存在很大脊髓压迫风险，其本身稳定性也是不够。而对于前路减压单向固定方式，目前尚没有专门的经前路的颈椎单向椎间融合固定器来进行稳定的固定。临床常用的融合器通常不具备固定功能，而需要颈前路钢板辅助进行螺钉固定以防止椎间融合器脱出。近年来，有学者发明的颈前路椎间铆钉融合器其自身带有双向螺钉固定功能，并在临床上得到较好的应用。然而，该融合器针对下颈椎的屈曲牵张伴间盘破裂及关节绞锁型损伤却不能使用，因此有必要开发新的颈椎单向椎间融合固定装置。
发明内容
本实用新型的目的在于提供一种新型的颈椎单向椎间融合固定装置，该装置能减少颈椎手术的复杂性，达到更好的稳定固定效果，并减少对患者的创伤。
本实用新型所述的颈椎单向椎间融合固定装置包括前端的螺钉固定部与后端的椎间融合部；所述螺钉固定部的左、右两侧分别设置对称分布的螺孔，所述螺孔是倾斜的以致螺钉能通过所述螺孔将所述椎间融合部固定于脱位小关节的下节椎体的终板上；所述螺孔之间设置有锁定装置，用于将插入所述螺孔的螺钉锁住以免螺钉脱出，以致所述椎间融合部被适合放置在颈椎双侧小关节脱位复位后两椎体之间，用于替代颈椎手术中摘除的椎间盘。
根据本发明所述的颈椎单向椎间融合固定装置的进一步特征，所述螺孔的倾斜方向与融合器成30度的角度。
本实用新型所述的颈椎单向椎间融合固定装置是专门设计的经颈前路的适用于颈椎双侧小关节脱位的椎间融合固定装置，较以往使用的碎状松质骨填充方式，或者使用非特定的钢板螺钉固定方式，该装置可以更好地对颈椎进行复位并保持其稳定性，更有利于简化手术过程。
附图说明
图1为本实用新型所述的颈椎单向椎间融合固定装置的侧面示意图。
图2为本实用新型所述的颈椎单向椎间融合固定装置的正面示意图。
附图标记
1：螺钉固定部；2：锁定装置；3：螺孔；4：椎间融合部。
具体实施方式
本实用新型所述的颈椎单向椎间融合固定装置，如图1和图2所示，该装置包括前端的螺钉固定部1与后端的椎间融合部4；螺钉固定部的左、右两侧分别设置对称分布的螺孔3，这些螺孔3是倾斜的以致螺钉能通过螺孔3将椎间融合部4固定于脱位小关节的下节椎体的终板上；这些螺孔3之间设置有锁定装置2，用于将插入螺孔3的螺钉锁住以免螺钉脱出，以致椎间融合部4被适合放置在颈椎双侧小关节脱位复位后两椎体之间，用于替代颈椎手术中摘除的椎间盘。
在优选的具体实施例中，螺孔的倾斜方向与融合器成30度的角度。
根据上述的设计原理，可针对不同患者的个体差异的具体数据制备出一系列不同型号的产品，在手术中根据具体情况选择不同型号进行匹配使用。
Claims (2)
1.一种颈椎单向椎间融合固定装置，其特征在于，所述装置包括前端的螺钉固定部与后端的椎间融合部；所述螺钉固定部的左、右两侧分别设置对称分布的螺孔，所述螺孔是倾斜的以致螺钉能通过所述螺孔将所述椎间融合部固定于脱位小关节的下节椎体的终板上；所述螺孔之间设置有锁定装置，用于将插入所述螺孔的螺钉锁住以免螺钉脱出，以致所述椎间融合部被适合放置在颈椎双侧小关节脱位复位后两椎体之间，用于替代颈椎手术中摘除的椎间盘。
2.根据权利要求1所述的颈椎单向椎间融合固定装置，其特征在于：所述螺孔的倾斜方向与融合器成30度的角度。
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- 2015-09-22 CN CN201520735767.9U patent/CN205073000U/zh not_active Expired - Fee Related
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