CN1527688A - 具有模块式固定的脊椎护架装置 - Google Patents

具有模块式固定的脊椎护架装置 Download PDF

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CN1527688A
CN1527688A CNA028140699A CN02814069A CN1527688A CN 1527688 A CN1527688 A CN 1527688A CN A028140699 A CNA028140699 A CN A028140699A CN 02814069 A CN02814069 A CN 02814069A CN 1527688 A CN1527688 A CN 1527688A
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frame
intervertebral
boring
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CN1527688B (zh
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����˹�ٰ���·��
克里斯蒂昂·路易
让·于佩尔
�ˡ�����Ƥ��ŵ
帕特里克·特罗皮亚诺
蒂埃里·迪富尔
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LDR Medical SAS
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Abstract

本发明涉及一种模块式的关节固定装置，用于通过以骨组织的生长取代纤维软骨盘而使两个相邻的椎骨体融合，确保在脊柱的椎骨体或者后者的端部之间的结合，并包括可以互换的固定装置。椎间关节固定装置，用于被插入一个将相邻两个椎骨体(V)的相对盘(V0)分开的椎骨间空隙(E)内，其特征在于：它包括至少一个被称为椎间护架(1)的结构，所述结构为环形，其可以是或者可以不是开环，其中，沿着脊骨的轴线，至少一部分具有比所述相同护架的其余部分更低的高度，并形成一个小杆(12)，所述杆与所述轴线上的至少一个钻孔(121，122)相交叉，所述轴线与相邻椎骨体中的至少一个椎骨体的盘(V0)大致垂直。

Description

具有模块式固定的脊椎护架装置
技术领域
本发明涉及一种关节固定装置，用于通过以骨组织的生长取代纤维软骨盘而使两个相邻的椎骨体融合，确保在脊柱的椎骨体或者后者的端部之间的结合。
背景技术
椎间盘是由一种可变形的但不可压缩的、被称为“核髓”的部分形成的，所述部分包含大约80％的水，被几层弹性纤维层包围，这些纤维层结合成一体以保持细胞核，吸收被施加到所述盘单元上的一部分力并使关节保持稳定。由于压伤、脱臼或者磨损，其次是冲击、感染、用力过度或者仅仅是随着时间的流逝，这些部分可能经常会退化。关节的退化可能会导致病人有剧烈的疼痛和相当大的不适感。
在许多情形下，治疗方法包括移除全部或者部分被损伤的椎间盘并通过促使它们之间的骨质融合而使相关的椎骨体连接。为此，人们在椎骨体之间放入一种人造结构以允许它们保持分离，同时通过将一种骨质移植物或者一种骨质代用品植入椎骨间空隙中，由于相邻骨组织的生长，复合材料将被挤满。这种结构通常会采用一种被称为开环或者闭环的护架，并且，在是颈椎骨的情况下，这种结构可以以一个护架为基础被放置在椎骨间空隙中，或者，在是腰椎骨的情况下，所述结构可以以一个或两个护架为基础被放置在椎骨间空隙中。当是一种颈椎护架时，多数情况下是被定位在椎骨体的前面，或者，当是一种腰椎护架时，被设置在椎骨体的前外侧面(一个护架)或椎骨体的后面(两个护架)。至于移植物和骨质代用品，在其定位之前或者之后，它们被放置在护架中，并且发现它们与包绕被处理过的椎骨间空隙的两个椎骨体接触。
在从关节生长直到关节强化所需的时间期间，可能是约六个月，重要的是，在椎骨间空隙内发生的各种各样的力的运动不会导致护架的移位，在骨组织的形成期间，护架的移位将会带来骨组织退化的危险、或者甚至从所述空隙内脱逸和损伤相邻的组织。
为了避免上述移位，所采用的一种解决方案包括，将与椎骨体接触的护架表面设置成各种各样的形状，比如，如专利FR0006351或者FR2733413所记载的锯齿形凹槽。然而，所述方案证明不适用于有多个护架的情形。
另一种解决方案包括，给护架设一个凸缘，所述凸缘在椎骨间空隙的外面延伸，并应用于每两个相邻椎骨体的侧面上，它被一个骨锚固螺钉固定到椎骨体上。自从约1988年以来这种方法就一直被采用，并在比如专利FR2747034中记载。然而，这样的一种盘(plate)在椎骨间空隙的外部表现出过度拥挤，这有时可能引起问题，特别是在颈椎关节的情形下，其可用空间是很有限的。事实上，在将另一个具有盘的护架定位在直接相邻的盘中的一个盘上时，此盘的存在比如可能给病人带来日常的不舒适或者形成一种即刻的或将来的障碍。
而且，尤其是在颈椎骨的情形下，脊骨的运动经常会具有导致骨锚固螺钉松动的趋势，这会减小这种盘的效用，并且也可能导致包绕着所述盘的组织损伤。
因而，就值得也提供一种装置，能够使护架固定而不会有一部分延伸在椎骨间空隙的外部。
而且，如果没有很必要地可能事先知道更好的方案的条件下，这些不同的解决方案可以满足关节固定操作的不同需要。因而，可以更容易地和更廉价地提供一种模块式装置，其包括用于实施不同方案的互换部件。
发明内容
为了补救这些缺陷中的一些缺陷，本发明提供一种椎间关节固定装置，用于被插入到一将相邻两个椎骨体的相对盘分开的椎骨间空隙内，其特征在于：所述椎间关节固定装置包括至少一被称为椎间护架的结构，所述结构为一环形，其可以是或者可以不是开环，其中，沿着脊骨的轴线，至少一部分具有一比所述相同护架的其余部分更低的高度，并形成一个小杆(bar)，所述杆与所述轴线上的至少一个钻孔相交叉，所述轴线与相邻椎骨体中的至少一个椎骨体的盘大致垂直。
根据本发明的一个特征，所述装置的特征在于，至少一椎间护架在其与所述椎骨体接触的表面上包括形状的变化，所述形状的变化限制其在一平行于所述椎骨体的盘的平面上滑动的可能性。
根据本发明的一个特征，所述装置的特征在于，所述装置包括将所述护架固定到这些椎骨体中的至少一个上的固定装置，通过将一突出部件插入所述护架的与所述小杆交叉的至少一个钻孔中，这些固定装置就能够被增加到至少一个椎间护架上。
根据本发明的一个特征，所述装置的特征在于，所述固定装置包括至少两骨锚固销，所述具有大致平行的轴线的骨锚固销被小杆连接，这些锚固销被推入至少一椎骨体的盘中并插入至少一椎间护架的至少一钻孔中，以将所述相同的护架在所述椎骨间空隙内保持就位。
根据本发明的一个特征，所述装置的特征在于，所述固定装置的至少一个骨锚固销包括突起(relief)，从而限制所述骨锚固销滑出其被压入的所述盘外部的可能性。
根据本发明的一个特征，所述装置的特征在于，所述固定装置包括至少一个固定板，固定板被连接到至少一个椎骨体的外表面上并且包括至少一个钻孔，钻孔用于接收被固定到所述相同椎骨体上的骨锚固螺钉。
根据本发明的一个特征，所述装置的特征在于，所述固定板的至少一钻孔在所述固定板的平面上具有一个截面，所述截面在所述钻孔的与所述椎骨体相对的开口处，所述截面不如所述钻孔的位于所述固定板厚度内的部分那样高，通过所述钻孔插入一骨锚固螺钉，所述螺钉的头部的一截面的至少一部分要比所述钻孔的所述开口的截面大些，并且因此由所述相同的外部开口保持在所述相同的钻孔内。
根据本发明的一个特征，所述装置的特征在于，所述固定装置包括至少两个锁紧螺栓，所述锁紧螺栓具有大致平行的轴线并被一个小杆连接，这些锁紧螺栓插入至少一个椎间护架的至少一个钻孔中，以将这些相同的固定装置锁紧在所述相同护架中并将它在所述椎骨间空隙内保持就位。
根据本发明的一个特征，所述装置的特征在于，所述小杆的至少一端部具有至少一突起，所述突起被夹卡在至少一个座腔内，所述座腔被设置在所述椎间护架的壁上，以便限制或防止所述相同的小杆相对于所述相同的椎间护架移动。
根据本发明的一个特征，所述装置的特征在于，所述固定装置包括一被称为半板的固定板，其被连接到至少一椎骨体的外表面上，所述固定板包括至少一钻孔，所述钻孔被一骨锚固螺钉插入，所述螺钉被固定在所述椎骨体中，以将所述相同的护架在所述椎骨间空隙内保持就位。
根据本发明的一个特征，所述装置的特征在于，用所述小杆连接锚固销或锁紧螺栓的所述固定半板形成了一个“L”形截面的元件。
根据本发明的一个特征，所述装置的特征在于，所述固定装置包括一被称为全板的固定板，其被连接到至少两个椎骨体的外表面上，所述固定板在每一端部附近具有至少一钻孔，所述钻孔被一骨锚固螺钉插入，所述螺钉被固定在所述椎骨体中，以防止所述椎间护架在椎骨间空隙的内部或外部发生任何移位。
根据本发明的一个特征，所述装置的特征在于，用所述小杆连接锚固销或锁紧螺栓的所述固定全板形成了一个“T”形截面的元件。
根据本发明的一个特征，所述装置的特征在于，所述固定板包括一个开口，所述开口在椎骨间空隙处，所述开口能够在所述装置插入之后将移植物或骨质代用品填装或导入到所述椎骨间空隙内。
根据本发明的一个特征，所述装置的特征在于，与一骨锚固螺钉共同起作用的所述固定装置的每一钻孔，一旦就位，即被定位在一个被相对于一个包含所述脊骨轴线的平面移位的位置上。
根据本发明的一个特征，所述装置的特征在于，至少一椎间护架沿着脊骨轴线具有一种不均匀的高度，所述高度的变化相对于所述相邻椎骨体导致在的所述盘之间形成一确定的角度。
根据本发明的一个特征，所述装置的特征在于，所述装置的至少一个构成部件是由一种射线可透的材料制成的。
附图说明
在结合附图阅读了下面的描述之后，本发明的特征和优点将变得更加清楚，其中：
图1a表示根据本发明一个实施例的装置的侧视截面图，所述固定装置包括锚固销和一个顶部半板；
图1b表示根据本发明一个实施例的装置的侧视截面图，所述固定装置包括一个全板，其具有被增加有锁紧螺栓的开口并具有被保持在所述板的钻孔中的锚固螺钉；
图2表示根据本发明一个实施例的装置的俯视截面图，所述固定装置包括锚固销和一个下部半板；
图3a表示根据本发明的一种椎间护架的透视图；
图3b表示根据本发明一个实施例的装置在压入销之前的透视图，所述固定装置包括具有变化的形状的锚固销；
图3c表示根据本发明一个实施例的装置在压入“V”形舌状件之前的透视图，所述固定装置包括“V”形的锚固舌；
图4a表示根据本发明一个实施例的装置的透视图，所述固定装置包括锚固销和一个下部半板；
图4b表示根据本发明一个实施例的装置的透视图，所述固定装置包括锚固销和一个具有开口的顶部半板；
图5a表示根据本发明一个实施例的装置的透视图，所述固定装置包括锚固销和一个具有开口的全板；
图5b表示根据本发明一个实施例的装置的透视图，所述固定装置包括一个装有锁紧螺栓的全板，图示为具有锚固螺钉。
具体实施方式
在一个实施例中，根据本发明的一种关节固定装置包括至少一个形状为环形的椎间护架1，所述椎间护架被插入在两个相邻椎骨体之间的椎骨间空隙E内，并且所述空隙E被用来将一种用作一个移植物、或者任何可以起到一个骨质代用品作用或通过骨质材料的生长而被“组装”的结构接收到一个内部空腔10内(图2a)。因而，所述椎间护架的所述空腔可以在它定位于椎骨间空隙内之前或之后被填充。
根据一种应用，根据本发明的装置可以包括一个单一的椎间护架1(图1和2a)，比如实现在两个颈椎骨之间的关节固定。
根据一种应用，根据本发明的装置可以包括两个椎间护架(未示出)，比如在由后部定位期间实现在两个腰椎骨之间的关节固定。
根据一种应用，根据本发明的一种椎间护架装置可以被以一种封闭环1(图3a)的形状或者以一种在一侧敞开的开环形式(未示出)制成。
在图1和2a所示的一个实施例中，本发明包括一个固定装置，它能使它被锚固在椎骨间空隙E内的一个椎骨体V的盘V0内。此固定装置由两个锚固销21、22构成，销具有大致平行的轴线并被一个小杆23连接。这些锚固销被导入形成于所述椎间护架的一薄壁下部内的两个钻孔121、122中，然后利用推力被压入到骨质材料中，所述骨质材料形成了包绕着椎骨间空隙的两个椎骨体之一的盘。
在一个实施例中，所述护架的薄壁下部形成一个小的平杆12，上述小杆23被靠接在所述平杆12上，它也是平的，当两个锚固销21、22被压入一个椎骨体V的盘V0内时，平杆连接所述两个锚固销21、22。用于连接锚固销的小杆23以及通过削平椎间护架1而形成的小杆12的厚度被确定，以便这两个小杆12、23在压紧之后的叠加高度沿脊骨的轴线不高于椎间护架1的其余高度。
在如图3b所示的一个实施例中，锚固销21、22的长度和用于连接它们的小杆23的厚度被确定，以便在此实施例中用于形成固定装置的高度的这两个尺寸的总和不大于沿椎间护架的其余脊骨轴线的高度。这样，就能够将一个已经设有锚固销的椎间护架导入所述椎骨间空隙，然后后者仅仅已经被压入一个椎骨体V的盘V0，比如借助于一种扩展器、一种distractor或者另外公知类型的工具。
在如图3c所示的一个实施例中，能使所述装置在椎骨间空隙E的范围内固定在椎骨体V的盘V0中的固定装置，由两个“V”形锚固舌51、52构成，两个锚固舌被一个小杆53连接。这些锚固舌51、52被导入椎间护架的一个薄壁下部与两个凸耳54(图3c中仅示出一个)之间，所述椎间护架形成有一个小杆62，所述凸耳被形成于装置上并相对于装置的轴线对称设置。然后，所述“V”形锚固舌51、52被压紧，在装置设有所述销21、22和小平杆53的情形下，两个“V”形锚固舌51、52的连接能够靠接在所述小杆62上，也是平的，当所述舌被压入一个椎骨体V的盘V0时。用于连接锚固舌的小杆53的厚度以及由椎间护架1的削平而形成的小杆62的厚度被确定，以便在压入之后两个小杆62、53的叠加高度沿着脊骨轴线不高于椎间护架1的其余部分的高度。
在一个实施例中(未示出)，根据本发明的装置包括两个椎间护架。这两个椎间护架每个都由一个开环形成，其中至少一部分沿脊髓轴线具有减小的高度。在一个实施例中，至少这些相同护架中的一个为“U”形或者“C”形(未示出)，并且每一个护架在其端部包括一个小杆，其一部分沿脊髓轴线具有减小的高度。这些小杆被至少一个钻孔交叉，钻孔具有大致垂直于椎骨体V的盘V0的轴线，它们相互接触。在一个实施例中，两个椎间护架被设置在椎骨间空隙内并且它们的开口彼此相对，包括两个具有被一小杆连接的平行轴线的锚固销的至少一个固定装置被导入两个小杆中每个小杆的钻孔中并且端部彼此相对。然后，锚固销被压入椎骨体的盘中并插入所述椎间护架的小杆的钻孔中以有助于使所述护架保持固定。
在一个实施例中，根据本发明的装置中所用的一种椎间护架1在其与椎骨体V接触的至少一个表面上具有形状11变化，比如为锯齿形。在由包绕被处理过的椎骨间空隙E的椎骨体所施加的力的作用下，这些形状变化被支承在这些相同椎骨体的盘V0的表面上并从而限制了所述椎间护架的移位的危险。
在如图1、2a和4b所示的一个实施例中，根据本发明的装置中所用的一种固定装置包括一个被称为顶部半板32的板，其连接有所述小杆23，所述小杆使锚固销21、22相互连接，所述半板向要被处理的椎骨间空隙E的外部延伸并被连接到与所述用于接收锚固销的椎骨体相对的椎骨体的外表面上。所述顶部半板包括至少一个钻孔321，用于接收一个公如类型的骨锚固螺钉4，所述螺钉4被固定在椎骨体内并插入盘中以防止椎间护架1在所述被处理过的椎骨间空隙E的内部或外部发生任何位移。所述顶部半板还包括一个开口320，它使移植物在正确就位于椎骨间空隙内之后导入护架1中。然后，所述用于连接小杆23和顶部半板32的元件的部分就呈现为一个“L”形状。
在如图4a所示的一个实施例中，一个被称为底部半板31的板被以同样的方式固定到用于接收锚固销的椎骨体上。然后，所述用于连接小杆23和底部半板31的元件的一部分就呈现为一个“L”形状。
在如图5a所示的一个实施例中，根据本发明的装置中所用的一种固定装置包括一个被称为全板33的板，所述全板与用于使锚固销21、22彼此连接的小杆23成为整体，所述全板向要被处理的椎骨间空隙E的外部延伸并被连接到包绕所述椎骨间空隙E的这两个椎骨体的外表面上。然后，所述用于连接小杆23和全板33的元件的部分就呈现为一个“T”形状。所述全板33包括至少两个钻孔331、332，每个钻孔用于接收一个公知类型的骨锚固螺钉4，所述螺钉4被固定在相应的椎骨体内并插入盘中以防止椎间护架1在所述被处理过的椎骨间空隙E的内部或外部发生任何位移。所述全板还包括一个开口330，它使移植物在正确就位于椎骨间空隙内之后导入护架1中。
在如图1b和5a所示的一个实施例中，根据本发明的装置中所用的一种固定装置包括一个被称为全板33的板，所述全板连接有所述小杆23，所述小杆包括两个垂直于其纵轴线的锁紧螺栓24、25，并被容置在椎间护架1的两个钻孔121、122中。所述全板向要被处理的椎骨间空隙E的外部延伸并被连接到包绕所述椎骨间空隙E的这两个椎骨体的外表面上。采用锁紧螺栓而不是用销的事实使得能够采用一种被压入椎骨体的盘中时不是太坚硬的材料，但是，另一方面又表现出在进行放射线照射期间是透光的优点。然后，用于连接小杆23和全板33的元件部分，在沿一个包含所述脊骨轴线的平面的横截面上就呈现为一个“T”形状。
所述全板33包括至少两个钻孔331、332，每个钻孔用于接收一个公知类型的骨锚固螺钉4，所述螺钉4被固定在相应的椎骨体内并插入盘中以防止椎间护架1在所述被处理过的椎骨间空隙E的内部或外部发生任何位移。
在如图5a所示的一个实施例中，连接锁紧螺栓和全板33的所述小杆23防止在它的两端与椎间护架1的壁接触，一个圆形突起通过在一个设置于与椎间护架1相对的壁上的凹腔13中发生弹性变形而被削平。凹腔13中所述突起233的削平，使得在装置就位期间或者就位之后能够将护架1和板33保持在一起。
在一个实施例中，为了避免比如在脊骨运动的影响下锚固螺钉松动，用于在一个平行于所述板的平面上接收螺钉的所述板33的钻孔呈现为一个截面，所述截面在与椎骨体相对的表面上的其开口的水平上，被称为外部，稍微低于所述板的内部。所述螺钉的头部呈现为截面的一部分比钻孔的外部开口的截面大些。这样，在力的作用下，一旦螺钉头部的大部分已经穿过钻孔的内部而被拧入，形成所述板的材料的弹性将所述头部保持在钻孔内，限制后来松动的危险。所述全板还包括一个开口330，它使移植物在正确就位于椎骨间空隙内之后导入护架1中。
在一个实施例中，根据本发明所述固定装置的板31、32、33包括至少一个它的钻孔311、321、331，钻孔用于接收一个骨锚固螺钉4，所述螺钉被定位于一个被相对于一个包含脊骨轴线的平面转换的位置上。这样，通过采用所述固定板并通过将这些板定位于交错的行中，就能够处理两个相邻的椎骨间空隙，它们的钻孔的所述被转换位置能够使它们被位于相同椎骨体中并且在沿脊骨轴线的相同高度上的不同螺钉固定。
在一个实施例中，根据本发明的所有或者部分装置是由一种可透射线的材料制成的，比如PEEK，这使得能够通过放射照相术监视护架内的骨组织的生长情况。尽管这样，为了证实所述装置的部件不被移位，就有可能在一个或多个部件上安装一个无线电标志，所述标志包含比如一个由一种射线不可透的材料制成的小元件。
因而，根据本发明，通过简单地采用一种类型或另一种类型的固定装置，就能够以不同的方式使一个椎间护架1定位。比如，所述相同的椎间护架1可以被定位成：
—或者单独使用，
—或者设有一个具有销21、22、23的固定装置，
—或者设有一个具有销和具有一个顶部半板32或底部半板31的固定装置，
—或者设有一个具有销和具有一个全板33的固定装置，
—或者设有一个增设有锁紧螺栓24、25的顶部半板32或底部半板31，
—或者设有一个增设有锁紧螺栓24、25的全板33。
这种模块化设计可以使外科医生在外科手术期间根据他所遇到的解剖学条件、通过由自己支配地从要选择的部件中拥有减少数量的部件，能够选择固定装置的类型。
也应注意到，比如具有销或板或者两者的固定装置，比如在一个新的外科手术期间，可以随后被移出而没有对所执行的关节固定术造成有影响的破坏。实际上，在关节被强化之后，尽管带来不舒适，对于病人或者对于相邻椎骨间空隙的类似治疗，此装置可以不再是必要的。
对于本领域的普通技术人员来说，应当知道，本发明在众多的其它特定形式下可以具有其它可能的实施例，这没有脱离由本发明权利要求书所限定的应用领域。因此，本发明的上述实施例必须被认为只是一种说明，但是可以在由权利要求书所限定的保护范围内进行修改，本发明并不局限于上文所记载的具体细节。

Claims (18)

1.椎间关节固定装置，用于被插入到一将两个相邻椎骨体(V)的相对盘(V0)分开的椎骨间空隙(E)内，其特征在于：所述椎间关节固定装置包括至少一被称为椎间护架(1)的结构，所述结构为一环形，其可以是或者可以不是开环，其中，沿着脊骨的轴线，至少一部分具有一比所述同一护架的其余部分更低的高度，并形成一个小杆(12，62)。
2.按照权利要求1所述的装置，其特征在于：至少一椎间护架(1)在其与所述椎骨体(V)接触的表面上包括形状(11)的变化，所述形状的变化限制其在一与所述椎骨体的盘(V0)平行的平面上滑动的可能性。
3.按照前述任一项权利要求所述的装置，其特征在于：所述装置包括将所述护架(1)固定到这些椎骨体(V)中的至少一个上的固定装置，通过将一突出部件插入与所述护架(1)的所述小杆(12)交叉的至少一钻孔(121，122)中，这些固定装置就能够被增加到至少一椎间护架(1)上，所述钻孔(121，122)的轴线大致垂直于至少一相邻椎骨体(V)的盘(V0)。
4.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置包括至少两骨锚固销(21，22)，所述具有大致平行轴线的骨锚固销被小杆(23)连接，这些锚固销被推入至少一椎骨体(V)的盘(V0)中并插入至少一椎间护架(V)的至少一钻孔(121，122)中，以将所述同一护架(1)在所述椎骨间空隙(E)内保持就位。
5.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置的至少一骨锚固销(21，22)包括突起(210)，从而限制所述骨锚固销(21，22)滑出其被压入的所述盘(V0)外部的可能性。
6.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置包括至少一固定板(31，32，33)，所述固定板被连接到至少一椎骨体(V)的外表面上并且包括至少一钻孔(311，321，331，332)，所述钻孔用于接收一被固定到所述同一椎骨体上的骨锚固螺钉(4)。
7.按照前述任一项权利要求所述的装置，其特征在于：所述固定板(31，32，33)的至少一钻孔(311，321，331，332)在所述固定板的平面上具有一个截面，所述截面在所述钻孔的与所述椎骨体(331a，图1b)相对的开口处，所述截面不如所述钻孔的位于所述固定板厚度内的部分(331b，图1b)那样高，通过所述钻孔(331)插入一骨锚固螺钉(4)，所述螺钉的头部(41)的一截面的至少一部分要比所述钻孔(331)的所述开口(331a)的截面大些，并且因此由所述相同的外部开口(331a)保持在所述相同的钻孔(331)内。
8.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置包括至少两个锁紧螺栓(24，25)，所述锁紧螺栓具有大致平行的轴线并被一个小杆(23)连接，这些锁紧螺栓插入至少一个椎间护架(1)的至少一个钻孔(121，122)中，以将这些相同的固定装置(31，32，33)锁紧在所述同一护架中并将所述护架在所述椎骨间空隙(E)内保持就位。
9.按照前述任一项权利要求所述的装置，其特征在于：所述小杆(23)的至少一端部具有至少一突起(233)，所述突起被夹卡在至少一个座腔(13)内，所述座腔(13)被设置在所述椎间护架(1)的壁上，以便限制或防止所述同一小杆相对于所述同一椎间护架移动。
10.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置包括一被称为半板(31，32)的固定板，其被连接到至少一椎骨体(V)的外表面上，所述固定板包括至少一钻孔(311)，所述钻孔被一骨锚固螺钉(4)插入，所述螺钉被固定在所述椎骨体中，以将所述同一护架(1)在所述椎骨间空隙(E)内保持就位。
11.按照前述权利要求所述的装置，其特征在于：用所述小杆(23)连接所述锚固销(21，22)或锁紧螺栓(24，25)的所述固定半板(31，32)形成了一“L”形截面的元件。
12.按照前述任一项权利要求所述的装置，其特征在于：所述固定装置包括一被称为全板的固定板(33)，其被连接到至少两个椎骨体(V)的外表面上，所述固定板在每一端部附近具有至少一钻孔，所述钻孔被一骨锚固螺钉(4)插入，所述螺钉被固定在所述椎骨体中，以防止所述椎间护架(1)在椎骨间空隙(E)的内部或外部发生任何移位。
13.按照前述权利要求所述的装置，其特征在于：用所述小杆(23)连接所述锚固销(21，22)或锁紧螺栓(24，25)的所述固定全板(33)形成了一“T”形截面的元件。
14.按照前述任一项权利要求所述的装置，其特征在于：所述固定板(32，33)包括一个开口(320，330)，所述开口在椎骨间空隙的高度处，所述开口能够在所述装置插入之后将移植物或骨质代用品填装或导入到所述椎骨间空隙内。
15.按照前述任一项权利要求所述的装置，其特征在于：与一骨锚固螺钉(4)共同起作用的所述固定装置的每一钻孔(311，321，331，332)，一旦就位，即被定位在一个相对于一个包含所述脊骨轴线的平面移位的位置上。
16.按照前述任一项权利要求所述的装置，其特征在于：至少一椎间护架(1)沿着脊骨轴线具有一种不均匀的高度，所述高度的变化相对于所述相邻椎骨体(V)导致在的所述盘(V0)之间形成一确定角度。
17.按照前述任一项权利要求所述的装置，其特征在于：所述装置的至少一个构成部件是由一种射线可透的材料制成的。
18.按照权利要求1或2所述的装置，其特征在于：所述装置包括将所述椎间护架(1)固定到这些椎骨体(V)中的至少一个上的固定装置，通过将一突出部件插入在被形成于所述装置上的所述小杆(62)与两个凸耳(54)之间，这些固定装置就能够被增加到至少一个椎间护架(1)上，所述固定装置包括至少两个“V”形锚固舌(51，52)，所述锚固舌被一小杆(53)连接。
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CN103099662B (zh) * 2013-01-04 2015-08-12 朱悦 一种颈椎前路单边固定系统

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US20090270990A1 (en) 2009-10-29
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