CN100591304C - 包括一颈假体和插入器械的装置 - Google Patents

包括一颈假体和插入器械的装置 Download PDF

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CN100591304C
CN100591304C CN200410055829A CN200410055829A CN100591304C CN 100591304 C CN100591304 C CN 100591304C CN 200410055829 A CN200410055829 A CN 200410055829A CN 200410055829 A CN200410055829 A CN 200410055829A CN 100591304 C CN100591304 C CN 100591304C
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prosthese
shelf
clamping part
groove
appliance
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CN1579344A (zh
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A·科尔勒
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Waldemar Link GmbH and Co KG
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Cervitech Inc
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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Abstract

一种包括一颈假体(3)和一插入器械的装置，该架子(20)便于将该插入器械的夹紧部件(2)连接在假体(3)上。架子(20)能以精确的配合装入该假体(3)，并架子有一开口(26)，用于允许进入该插入器械的夹紧部件(2)。开口(26)包含用于将该插入器械的夹紧部件(2)导入一移出位置的导引元件(39，40，41)，在该移出位置中，夹紧部件(2)和该假体的互补的凸出部(18)和凹槽(15)彼此相对，以备啮合。

Description

包括一颈假体和插入器械的装置
技术领域
本发明涉及一种带有插入器械的颈假体。
背景技术
已知(EP-A 333990)利用一个插入器械来植入椎间假体，该插入器械有一对将该假体夹紧在对置两侧面上的夹紧部件。该对互相刚性地连接的夹紧部件每个有一沿A-P(前面的-后面的)方向延伸的槽，这两个槽装入两个沿A-P方向延伸的板的边缘，这两个板的边缘通过摩擦或通过一安装弹簧的卡子而保持在所述槽中。当该假体到达其被植入的部位时，该器械从假体上移去。这两个板的边缘沿A-P方向滑出这两槽。此类夹紧部件仅适合于其两侧边缘彼此平行地延伸并处在一预定的彼此始终恒定的距离处的端板。它们不适用于小的假体如用于颈脊柱的区域中，也不适用于没有设计来与夹紧部件配合的侧边缘的那些假体。最后，它们也不适用于需要极精确地配合而其相对于插入器械的位置必须不能由于植入期间产生的力而偶然地变化的假体。
发明内容
本发明的目的是用一种更可靠的插入器械来植入一颈假体。
按照本发明的解决方案，提出一种包括一颈假体和一插入器械的装置，插入器械带有一对在假体的对置两侧上夹住假体的夹紧部件，其特点在于，假体和夹紧部件中的一个具有凹槽，和假体和夹紧部件中的另一个具有与凹槽互补的凸出部，它们至少沿假体的前面-后面(A-P)的方向精确地限定其相对位置，并能通过夹紧部件沿一与插入器械的纵向横交和与该假体的前面-后面的方向横交的方向的相对移动进入啮合并能够彼此脱开，同时提供一个架子，以精确的配合方式装入假体，并架子在对应于假体的前表面的一侧上具有一带有导引元件的开口，这些导引元件用于将插入器械导入一移出位置，在该移出位置上，凹槽和互补的凸出部彼此彼此相向，以备啮合。
本发明利用一个由一颈假体和一插入器械组成的装置，该插入器械的用于将该假体夹紧在对置两侧面上的夹紧部件能够彼此相向地和彼此背离地移动。该假体和夹紧部件设有互补的凸出部和凹槽，它们以一种配合形式沿该假体的A-P方向限定该位置。只要夹紧部件围绕该假体闭合，那么，与上述已知的装置相反，该假体不能在平行于假体板的尺寸的平面内变化其相对于插入器械的位置。因此，它们也不可能沿A-P方向滑出这些夹紧部件。但是，将假体部件安装在插入器械上完全不是一件简单的事情，因为这些凸出部和凹槽非常小。而且，也容易发生一种注意不到的不正确地进行的安装。
也提供一种以精确配合的方式装入假体的架子。这保证凸出部以及假体上的凹槽安置在架子上的一个预定位置中。在对应于假体的前表面的一侧上，该架子敞开而允许移出假体。它具有导引元件，插入器械的夹紧部件利用这些导引元件而引入一相对于假体的位置，在该位置中，假体和夹紧部件上的互补的凸出部和凹槽彼此水平安置并对置而准备啮合。当操作的外科大夫从该位置开始而闭合夹紧部件时，凸出部和凹槽安全地啮合，从而可靠地完成假体在插入器械上的希望的正确安装。
为了保证该假体采取和维持该架子中的精确的配合位置，架子上有利地提供用于将该假体固定在该位置中的可脱开的机构。这些机构的脱开功能可以基于当安装在插入器械上的假体从架子撤回时它们能够弹性地弯曲。该脱开功能也涉及该机构或其对架子的连接在移出假体时受到破坏。该机构也可以是一个将假体固定在架子中而当移出假体时打开的盖子。最后，也可能架子整体受到破坏，例如由于其具有预定的破裂点或撕裂线。该架子可以是一种一次性丢弃的物品。
附图说明
下面参照附图更详细地说明本发明，这些附图有利地例示实施例，附图中：
图1表示一种带有颈假体的插入器械的全视图；
图2表示假体的放大透视图；
图3表示插入器械的夹紧部件；
图4表示带有安置于其中的假体的架子的平行于假体平面的截面图；
图5表示沿安置在架子中的假体的径向平面通过该架子的截面图；
图6表示带有安置于其中的假体和以截面图呈现的夹紧部件的架子的前视图。
具体实施方式
插入器械1设计成一把钳子，在其前端有一对夹紧部件2，后者从对置的两侧面夹紧假体3。在图示的例子中，A-P(前面的一后面的)方面与该插入器械的纵轴方向符合一致。这是最好的。但是，该器械的纵轴方向也可稍许偏离假体的A-P方向。在图2中，假体的背面设置在左边。该钳子能够通过一可脱开的锁4而固定在闭合位置中。
按照图2，该假体由两个盖板10、11和一个与盖板10形成一合页的假体芯12组成。假体高度可以变化，也即通过使用不同高度的假体芯12。沿其前侧边缘，盖板10、11每个有一法兰13、14，后者比盖板10、11和假体芯12的板状部分稍许狭窄。在其每个侧面中，盖板10的法兰13有一孔15。盖板11的法兰14和假体芯12的对应部分16在其侧面中有一相对于板的延伸部分垂直延伸的槽17。两侧面的设计相同而对称。
夹紧部件2有一对应于每个孔15的销钉18和一对应于每个槽17的凸出脊19。在部件11、12上选择一个槽17的原因在于假体芯可以有不同的高度。脊19可以与部分11、12的不同高度的槽17配合。
架子20具有下壁21、上壁22、后壁23和侧壁24、25。前部26是敞开的。这些壁限定一个用于放入假体3的空间27。其高度可以刚巧对应于假体的高度。因此同一种架子类型可用于不同高度的假体，最好其在下壁21的内表面30和上壁22的内表面30之间的总高度稍许大于假体高度而其余空间用一个其厚度适应于各假体高度的填充件31闭合。该架子中的假体的高度位置在任何情况下都是精确固定的。
沿L-M(侧面的一中间的)方向，架子中的假体位置由侧壁24、25假定。
下壁21和填充件31具有端面32、33，它们形成对法兰13、14的背面的紧接表面，并因此限定假体在架子20中沿A-P方向的位置。该假体由侧壁24、25上的弹性舌形件35固定在该位置中，这些舌形件用作架子中假体的柔性固定机构。其力使假体在运输、储存和搬运期间产生的力作用下相对于该架子可靠地保持在该精确位置中。因此操作的外科大夫能够保证当他希望将假体连接到插入器械1上时该假体处在该架子内的该位置上。架子的开口26与下导引表面37、上导引表面38和侧导引表面39、40邻接。这些表面终止于端面41，后者能够与紧接表面32、33符合。开口的上下表面38、37之间的距离带微小游隙地等于插入器械的夹紧部件2的高度。开口的侧表面39、40之间的宽度等于处在充分宽地开口状态中的器械的宽度。因此表面37～41适合于在插入器械的夹紧部件2连接到肢体之前安置该部件。其尺寸这样选择，使得在该位置中，夹紧部件的凸出部18、19和假体的凹槽15、17相互对置、刚巧水平和易于啮合。当插入器械的夹紧部件2从该位置沿图4中指示的箭头方向一起压紧时，该凸出部和凹槽彼此安全地进入正确的啮合。夹紧部件的闭合位置由锁4固定。现在可以通过舌形件35的弹性变形而从保持在插入器械中的假体3移去该架子。

Claims (2)

1.一种包括一颈假体(3)和一插入器械(1)的装置，插入器械(1)带有一对在假体(3)的对置两侧上夹住假体(3)的夹紧部件(2)，其特征在于，假体(3)和夹紧部件(2)中的一个具有凹槽(15，17)，而假体(3)和夹紧部件(2)中的另一个具有与凹槽互补的凸出部(18，19)，所述凹槽和互补的凸出部至少沿假体(3)的前面-后面的方向精确地限定其相对位置，并能通过夹紧部件(2)沿一与该插入器械(1)的纵向横交和与该假体(3)的前面-后面的方向横交的方向的相对移动进入啮合并能够彼此脱开，同时提供一个架子(20)，以精确的配合方式装入假体(3)，并架子在对应于假体(3)的前表面的一侧上具有一带有导引元件(37～41)的开口，这些导引元件用于将插入器械(1)导入一移出位置，在该移出位置上，凹槽(15，17)和互补的凸出部(18，19)彼此相向，以备啮合。
2.按照权利要求1所述的装置，其特征在于，提供可脱开的机构(35)，用于将假体(3)固定在该架子中的精确配合位置。
CN200410055829A 2003-08-04 2004-08-04 包括一颈假体和插入器械的装置 Expired - Fee Related CN100591304C (zh)

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