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CN103561690A - 具有内嵌式单件固定装置的融合笼 - Google Patents

具有内嵌式单件固定装置的融合笼 Download PDF

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Publication number
CN103561690A
CN103561690A CN201280025009.7A CN201280025009A CN103561690A CN 103561690 A CN103561690 A CN 103561690A CN 201280025009 A CN201280025009 A CN 201280025009A CN 103561690 A CN103561690 A CN 103561690A
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CN
China
Prior art keywords
prong
cage
antetheca
bail
cross bar
Prior art date
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Pending
Application number
CN201280025009.7A
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English (en)
Inventor
T.加马彻
J.奇尔德斯
M.帕尔森
K.弗拉赫蒂
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DePuy Products Inc
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DePuy Products Inc
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Publication of CN103561690A publication Critical patent/CN103561690A/zh
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Abstract

本发明提供了用于利用固定装置将椎间融合笼固定到脊柱的一个或多个节段的方法。所述固定装置通常为卡钉,其旨在垂直于所述笼的近侧面被钉入,并且与所述插入物并行。在根据外科医生的偏好将所述笼放置和定位之后,接着以产生零切迹装置的方式部署和固定单件固定夹。

Description

具有内嵌式单件固定装置的融合笼
背景技术
脊柱外科医生明确表达了不在椎体的前表面上插入板然后放置穿过该板的诸如骨螺钉的固定装置的愿望。通常,可能认为板太突出,并且其外形有时会引起患者不适并可能与言语障碍症有关。
PCT公布的专利申请WO02/013732(Bramlet)公开了用于融合相对的脊椎的设备和方法。该植入物包括主体组件和联接到主体组件的保持构件。保持构件包括柄脚,其中柄脚可从主体组件延伸。该方法包括利用处于第一回缩构型的植入物的保持构件将植入物插入相邻的椎骨之间的步骤。该方法也包括将保持构件配置为第二延伸构型的步骤,其中保持构件处于其第二延伸构型,保持构件的柄脚的一部分从植入物延伸进入相邻椎骨中的至少一个中。
美国专利6336928(DePuy France)公开了用于接合至少两个椎体的装置,该装置包括在每一端处配有锚固部件的至少一个板,该锚固部件可基本上竖直地引入到此前安置在待接合的椎体中的支座内,然后在引入之后,可以某一角度朝彼此折回,以便施加恒定的椎体压缩并确保完美的锚固,其中每个锚固部件经由限定两个成型凹口的中央连接区连接至对应的板的端部,以便允许该区以下述方式进行变形:每一对锚固部件允许在板的高度和在其端部的高度这两处进行压缩,以及在板的每一端处的锚固部件允许进行防止任何抽出的夹持。
美国专利7594931(LDR I)公开了椎间关节固定术,用于在分隔两个相邻椎骨的相对面的椎间隙中插入环形的椎间融合笼,该笼具有垂直于脊柱的轴线延伸的杆。杆具有小于笼的其余部分的高度。接触椎骨的笼的表面具有起伏的形状,以用于限制笼在平行于椎骨面的平面中的滑动。
PCT公布的专利申请WO2008/149223(LDR II)公开了肌间笼、椎间盘假体、锚固装置和用于植入笼或假体及锚固装置的器械,以及用于在椎骨中植入脊柱植入物和锚固装置的系统和方法。肌间笼或椎间盘假体紧密地配合到锚固装置,该锚固装置包括主体,该主体具有在纵向轴线上的细长形状和沿纵向轴线划出弧线的弯曲形状,弧线的尺寸和曲率半径以这样的方式设计,使得锚固装置可通过基本上沿椎间隙的平面呈现其纵向轴线而植入在脊椎的椎板中,其中锚固装置借助于该器械插入穿过位于笼的至少一个周壁中或在椎间盘假体的至少一个板上的狭槽,以穿入至少一个椎板中。
PCT公布的专利申请WO2010/028045(Synthes)公开了用于插入相邻椎体之间或两个骨骼部分之间的椎间盘间隙内的椎间植入物。该植入物包括垫片部分、可操作地联接到垫片部分的板部分和用于将植入物固定到相邻椎体的一个或多个刃。刃优选地包括用于接合相邻椎体的上筒销和下筒销。该植入物可被配置成通过直接经侧方腰大肌入路插入。或者,植入物可被配置用于通过前方入路插入。
美国专利公布No.2005-0149192和2005-0149193(Zucherman I和II)公开了具有融合体的椎间植入物,该融合体具有将植入物锚固到至少一个椎体的松质骨中的至少一个龙骨。用于植入的方法包括植入物的侧向植入。
美国专利公布No.2004-0260286(Ferree)公开了与例如全椎间盘置换(TDR)相关的椎间盘内部件,该部件用具有抵抗挤出、拔出和/或退出的属性的龙骨保持在盘间隙中。在优选的实施例中,龙骨被弯曲以抵抗挤出,特别是前挤出或后挤出。本发明可包括采用一对终板的TDR,每个终板带有延伸进入不同的椎体的龙骨,并且其中龙骨在不同方向上成角度或弯曲以抵抗挤出。在可供选择的实施例中,龙骨可包括向外延伸以抵抗挤出的一个或多个构件。此类构件可以是弹簧偏置的、由形状记忆材料构成或响应于施加的机械力(如可通过旋转螺钉而施加)而向外延伸。龙骨还可包括骨向内生长型栓或涂层或“齿状物”以抵抗挤出。根据本发明的龙骨也可被配置成通过增加穿透椎体和龙骨的细长构件而抵抗挤出。这样的构件可以是第二龙骨或螺钉。
美国专利公布No.2008-0167666(Fiere)公开了包括至少一个U形夹的设备,该U形夹的侧向分支具有截面和宽度,使得它们可以通过压紧在夹的中间分支上而被插入两个椎骨的椎体中,以便沿椎体的皮质骨搁置,并且其中间分支以这样的方式可变形,以允许减小侧向分支之间的距离;中间分支在植入之前具有这样的长度,使得侧向分支中的一个可定位在形成下级椎骨的板的皮质骨的略上方,同时另一侧向分支可定位在形成下级椎骨的板的皮质骨的略下方,并且在变形之后具有使得两个侧向分支可以更靠近彼此的长度。
美国专利6773437(Ogilvie)公开了利用形状记忆合金卡钉矫正发育中的青少年的脊柱畸形的非融合方法。形状记忆合金卡钉的各种实施例包括诸如在形状记忆合金卡钉中的插针的内表面和外表面上的倒钩的结构以及在将插针连接至形状记忆合金卡钉的横杆或十字板上的凹口的使用。在一些实施例中,形状记忆合金卡钉具有穿过十字板限定的小孔,以用于接纳骨螺钉或其他骨锚,骨螺钉或其他骨锚继而允许互连纵向构件。
美国专利公布No.US2010-0004747(Lin)公开了经椎骨和椎骨内板以及具有用于脊柱固定装置的板的狭槽的矩形笼,以用于抵消用于脊柱椎体间融合的椎间移动。具有竖直或倾斜狭槽的矩形笼从脊柱的横向侧或前侧插入椎间隙内,然后将板插入穿过笼的狭槽并且敲入和埋入两个相邻椎体的内部中,以实现三维椎间固定。
US2010-0204739(Bae)公开了包括假体的用于脊柱外科手术的系统,该假体包括多个骨锚,这些骨锚接合用于融合或运动保持的椎间构造。融合构造包括可任选地由夹套环绕的垫片。运动保持构造可包括铰接盘组件或弹性体盘组件。在移除椎间盘之后,构造中的任一种都可以占据相邻椎骨之间的椎间盘间隙。锚定件滑动地接合该构造以将假体牢固地固定到椎骨。融合构造的锚定件和夹套提供了横跨假体的相对侧的连续荷载路径,以便抵抗脊柱的对抗运动。
发明内容
本发明涉及利用单个卡钉将椎间融合笼固定到其相邻椎体,其中卡钉的每一个叉齿成一角度横贯笼的前壁,使得卡钉进入这两个椎体。卡钉设计成零切迹卡钉。
一般来讲,本发明涉及用于利用固定装置将笼固定到脊柱的一个或多个节段的方法。固定装置通常为卡钉,其旨在垂直于笼的近侧面被钉入,并且与插入物并行。在根据外科医生的偏好放置和定位笼之后,接着以产生零切迹装置的方式部署和固定单件固定夹。
卡钉的形状可设计成在被放置到其所需位置时在笼上提供压缩。
本发明的装置允许较小的切口和穿刺部位,并且卡钉的并行性质也使外科医生不必通过有时有难度的入路以大角度插入卡钉。
因此,本发明是有利的,因为它允许通过单个卡钉将笼固定到椎体中的每一个。卡钉优选地设计成提供基本上零切迹的装置。可将这种卡钉插入完全穿过或部分穿过笼的侧壁并进入相邻椎体中。此外,这些卡钉可被设计成向保持在笼内的移植物提供压缩,从而有助于融合。
在某些实施例中,卡钉被设计成攻入到与椎体齐平。卡钉也可使用形状记忆或弹簧材料提供到移植物上的压缩。在某些实施例中,这种卡钉可允许将笼和卡钉单独地插入,同时可以选择将卡钉与笼并行插入,或将卡钉与笼分离并将其放置到笼周围的任何位置。
附图说明
图1a示出本发明的零切迹装置的透视图。
图1b示出本发明的卡钉。
图2示出具有包括一对锋利末端的卡钉的本发明的装置。
图3示出具有带斜交叉齿的卡钉的本发明的装置。
图4a示出具有安装到其上的本发明的装置的本发明的插入物。
图4b示出图4a的插入物。
图5a示出具有卡钉的本发明的装置,其中每个叉齿具有加大的头部。
图5b示出具有卡钉的本发明的装置,其中每个叉齿包括多个齿状物。
图6a示出具有安装到其上的本发明的装置的本发明的插入物。
图6b示出图6a的远端的放大视图。
图7a示出具有从其横杆的每一端延伸的两个叉齿的本发明的卡钉。
图7b示出具有从其横杆的第一端部延伸的两个叉齿和从横杆的第二端部延伸的一个叉齿的本发明的卡钉。
图8a和8b示出本发明的相同装置的侧视图,其中卡钉具有第一构型和第二构型。
图9示出具有卡钉的本发明的装置,其中每个叉齿包括多个齿状物。
图10示出其中卡钉的叉齿朝笼弯回来的本发明的装置。
图11示出本发明的装置,其中卡钉的叉齿弯曲,使得其远端大致平行于笼延伸。
图12a-12d示出用于本发明的装置的插入物的多种侧视图和剖视图。
图13a-d示出在插入本发明装置的一种方法中的步骤。
图14示出其中叉齿延伸穿过前壁的后表面的本发明的植入物。
具体实施方式
现在参见图1a和1b,提供了(权利要求1)零切迹椎间融合装置,其包括:
a)椎间融合笼1,其包括具有内有凹部7的前表面5的前壁3、后壁9、连接所述前壁和后壁的一对侧壁11、上表面13、下表面14、和从上表面延伸至下表面的通孔15,所述笼具有前端17,
b)卡钉21,其包括第一横杆23以及从第一横杆23延伸的第一叉齿25和第二叉齿27,
其中卡钉的第一横杆的至少一部分设置在前壁的前表面中的凹部中,并且其中第一叉齿在笼的上表面上方延伸,并且第二叉齿在笼的底部表面下方延伸,
其中前表面是笼的前端。
图1的该笼与Bramlet(图1和2)的笼不同之处在于,本发明的笼是零切迹的(而Bramlet的帽盖从笼壁突出)。
在一些实施例中(如在图5b和9中),卡钉的每个叉齿包括多个齿状物29。这些齿状物进一步提高将笼固定到相对的椎体的卡钉的固定质量。
在一些实施例中(如在图8a和8b中),卡钉包含形状记忆材料。该特征允许卡钉在加热时(或在除去应力时)重构自身以压缩笼正上方、正下方或穿过笼的区域,从而有助于通过笼的融合。
在一些实施例中(如在图3中),叉齿31设置成斜交取向。叉齿的斜交性质阻止它们从椎体同时退出。斜交性质可由材料特性、笼几何形状、器械的操纵、部件的添加或凹部几何形状而产生。
在一些实施例中,至少一个叉齿以与第一横杆成钝角的方式从第一横杆延伸。该取向允许叉齿在笼上方延伸且进入相邻椎体中。
在一些实施例中,卡钉包括至少两个横杆33、35。使用两个横杆允许在两者间形成通道(如在图5a和5b中)。可以将定位螺钉36插入该通道中,以便提供卡钉的紧固性。
在一些实施例中(如在图5a中),两个横杆大致形成环状物35。该实施例的环形通道有利于上述定位螺钉的使用。
在一些实施例中(如在图5a中),定位螺钉36通过环状物并完全进入前壁的前表面中的凹部中。这产生在颈椎笼中期望的零切迹特性。
在一些实施例中(如在图3中),至少一个叉齿31以与前壁成钝角的方式从第一横杆延伸。该特性允许叉齿深深地穿入相对的椎体中。
仍然参见图1a和图1b,提供了(权利要求10)两件式椎间融合装置,其由以下组成:
a)椎间融合笼,其包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从上表面延伸至下表面的通孔,
b)一体的卡钉,其包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中卡钉的第一横杆的至少一部分设置在前壁的前表面中的凹部中,并且其中第一叉齿在笼的上表面上方延伸,并且第二叉齿在笼的底部表面下方延伸。
图1a的该笼与Bramlet(图1和2)的笼不同之处还在于,本发明的笼没有压缩帽盖(而Bramlet需要压缩帽盖来固定卡钉)。
因此,(如在图1a中)在一些实施例中(权利要求35),椎间融合装置由笼和卡钉组成。
在一些实施例中(如在图7a和7b中),至少一个叉齿45具有宽度和高度,其中叉齿的宽度为高度的至少两倍。该叉齿的宽度性质为卡钉的固定质量提供了进一步的紧固性,从而增强笼到椎体的固定。
在一些实施例中(权利要求24)(如在图8a和8b中),卡钉包含形状记忆材料并且具有马氏体构型47和奥氏体构型49,其中至少一个叉齿在马氏体构型中与横杆形成第一角度α并且在奥氏体构型中与横杆形成第二角度β。该特性允许卡钉在加热时重构自身以压缩笼正上方、正下方或穿过笼的区域,从而有助于通过笼的融合。
在一些形状记忆实施例中(如在图8a和8b中),第一角度α大于第二角度。这有助于以上讨论的骨移植物的所期望的压缩。
在一些实施例中,该装置还包括设置在通孔内的骨移植材料。该骨移植物提高了通过笼提供骨融合的可能性。
在其一些实施例中,卡钉提供了骨移植材料的压缩。骨移植物的压缩提高了通过笼提供骨融合的可能性。
在一些实施例中(如在图10中),每个叉齿具有向内弯曲的远端部分51。这些向内弯曲的叉齿可提供设置在笼中的骨移植物的压缩,从而提高通过笼提供骨融合的可能性。
在一些实施例中(如在图5b中),前壁中的凹部从笼的上表面延伸至下表面。该特征允许卡钉完全座置在前壁中,从而提供零切迹装置。特别地,其每个叉齿完全设置在前壁的前表面的后方。
在一些实施例中(如在图5a和5b中),卡钉延伸穿过笼的上表面并穿过笼的底部表面。这允许卡钉以较高的仰角进入椎体,同时提供期望的零切迹特性。
在一些实施例中(如在图14中),笼的前壁58具有后表面55,并且第一叉齿57和第二叉齿59延伸穿过前壁的后表面。该实施例确保叉齿朝椎骨终板的中央区域进一步穿透相对的椎体,从而提供笼到椎体的更平衡的固定。
在一些实施例中(如在图3中),凹部限定延伸穿过前壁的上孔和延伸穿过前壁的下孔,并且叉齿延伸穿过上孔和下孔。
在一些实施例中(如在图2中),叉齿延伸至锋利的远侧末端61。该锋利末端有助于在卡钉插入期间穿透相对的椎体。
在一些实施例中(如在图11中),第一叉齿的近侧部分63在第一方向上延伸,并且第一叉齿的远侧部分65在第二方向上延伸,第二方向比第一方向更平行于笼的上表面。
在一些实施例中(如在图10中),第一叉齿的近侧部分67延伸远离笼,并且第一叉齿的远侧部分51朝笼延伸。
在一些实施例中(如在图8a和8b中),叉齿的远端71在第一构型中间隔第一距离D1,并且叉齿的远端73在第二构型中间隔第二距离D2,并且第二距离D2小于第一距离D1
在一些实施例中(如在图5a中),定位螺钉和卡钉的第一横杆的中间部分两者完全设置在前壁的前表面中的凹部中。
在一些实施例中,(如在图7a和7b中),横杆的后表面75形成锋利的刃。
在一些实施例中(如在图5a、7a和7b中),每个叉齿79的远侧部分形成加大的头部81。
在一些实施例中(如在图1a中),卡钉的横杆包括前表面83,在前表面83中具有适于联接到插入物器械的凹部85。
在一些实施例中(如在图1a中),笼具有至少一个凹部,其中第二构型取决于凹部几何形状或覆盖板。
现在参见图12a-12d,提供了用于本发明装置的插入物200的多种侧视图和剖视图。插入物包括外插管、具有一对远侧插针的外抓取器;具有单个远侧头部的内抓取器末端、致动内抓取器末端的近端旋钮;选择性地部署卡钉或笼的中间旋钮、以及致动外抓取器末端的远端旋钮。外抓取器末端适于保持和插入本发明的笼。内抓取器末端适于保持和插入本发明的卡钉。
图4a、6a和6b示出了其中笼101安装在插入物103上的本发明组件的其他视图。可用于本发明的一种类型的插入物103的视图在图4b中示出。
图13a-d示出插入本发明的装置的一种方法。在图13a中,卡钉201显示为安装在内抓取器末端203的远端上。在图13b中,卡钉201和内抓取器末端回缩到插入物插管中。接下来,如图13c所示,在内抓取器末端和安装的卡钉回缩的情况下,本发明的笼205安装到外抓取器末端207上。笼在处于该构型时接着被插入椎间盘间隙内。最后,现在参见图13d,卡钉部署在如图所示插入的笼之上,从而插入相对的椎体中。卡钉可由常规的结构生物材料制成。通常,卡钉由诸如钛合金、不锈钢、镍钛诺或钴铬合金的金属生物材料制成。
在一些实施例中,笼的前壁由诸如钛合金、不锈钢或钴铬合金的金属材料制成,同时笼的其余部分由聚合物材料或结构同种异体移植材料制成。或者,装置可完全由这些指定材料中的任一种制成。
如果选择金属作为构造的材料,那么金属优选地选自镍钛诺、钛、钛合金(例如,Ti-6Al-4V)、铬合金(如,CrCo或Cr-Co-Mo)和不锈钢。
如果选择聚合物作为构造的材料,那么聚合物优选地选自聚碳酸酯、聚酯(尤其是诸如聚对苯二甲酸亚烷基酯、聚酰胺的芳族酯)、弹性体、聚烯烃、聚(氟乙烯)、PTFE、聚芳醚酮PAEK、以及它们的混合物。
在其中骨移植材料被放置在装置的通孔内的实施例中,骨移植材料可选自羟基磷灰石、磷酸三钙、同种异体移植物、和诸如TGF-β(和优选地BMP–更优选地rhGDF-5)的生长因子。
在一些实施例中,部件由不锈钢合金制成,优选可得自位于宾夕法尼亚州怀奥米辛的卡彭特技术公司的卡彭特特种合金公司(Carpenter SpecialtyAlloys,Carpenter Technology Corporation(Wyomissing,PA))的BioDurR CCMPlusR合金。在一些实施例中,部件由含有碳纤维的复合物制成。含有碳纤维的混合物的有利之处在于:它们的强度和硬度通常超过了如聚芳醚酮PAEK的纯聚合物材料。在一些实施例中,部件由诸如PEKK-碳纤维复合物的聚合复合物制成。
优选地,含有碳纤维的复合物还包含聚合物。优选地,聚合物为聚芳醚酮(PAEK)。更优选地,PAEK选自聚醚醚酮(PEEK)、聚醚酮酮(PEKK)和聚醚酮(PEK)。在优选的实施例中,PAEK为PEEK。
在一些实施例中,碳纤维构成介于1体积%和60体积%之间(更优选地,介于10体积%和50体积%之间)的复合物。在一些实施例中,聚合物和碳纤维是均匀地混合的。在其它实施例中,材料为层合物。在一些实施例中,碳纤维以短切状态存在。更优选地,短切的碳纤维的中值长度在1mm和12mm之间,更优选地在4.5mm和7.5mm之间。在一些实施例中,碳纤维以连续的股线存在。
在特别优选的实施例中,复合物包括:
a)40%-99%(更优选地,60-80体积%)的聚芳醚酮(PAEK),和
b)1%-60%(更优选地,20-40体积%)的碳纤维,
其中聚芳醚酮(PAEK)选自聚醚醚酮(PEEK)、聚醚酮酮(PEKK)和聚醚酮(PEK)。
在一些实施例中,复合物基本上由PAEK和碳纤维组成。更优选地,复合物包含60-80重量%的PAEK和20-40重量%的碳纤维。还更优选地,复合物包含65-75重量%的PAEK和25-35重量%的碳纤维。

Claims (38)

1.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述前表面是所述笼的所述前端。
2.根据权利要求1所述的装置,其中每个叉齿包括多个齿状物。
3.根据权利要求1所述的装置,其中所述卡钉包含形状记忆材料。
4.根据权利要求1所述的装置,其中所述叉齿设置成斜交取向。
5.根据权利要求1所述的装置,其中至少一个叉齿以与所述第一横杆成钝角的方式从所述第一横杆延伸。
6.根据权利要求1所述的装置,其中所述卡钉包括在所述叉齿之间延伸的至少两个横杆。
7.根据权利要求6所述的装置,其中所述两个横杆大致形成环状物。
8.根据权利要求7所述的装置,还包括:
c)定位螺钉,所述定位螺钉通过所述环状物并且完全设置到所述前壁的所述前表面中的所述凹部中。
9.根据权利要求1所述的装置,其中至少一个叉齿以与所述前壁成钝角的方式从所述第一横杆延伸。
10.一种两件式椎间融合装置,其由以下组成:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸。
11.根据权利要求10所述的装置,其中至少一个叉齿具有宽度和高度,其中所述至少一个叉齿的所述宽度为所述高度的至少两倍。
12.根据权利要求10所述的装置,其中所述卡钉包含形状记忆材料并且具有马氏体构型和奥氏体构型,其中至少一个叉齿在所述马氏体构型中与所述横杆形成第一角度并且在所述奥氏体构型中与所述横杆形成第二角度。
13.根据权利要求10所述的装置,其中所述第一角度大于所述第二角度。
14.根据权利要求10所述的装置,其中所述卡钉包括两个横杆。
15.根据权利要求10所述的装置,其中所述两个横杆大致形成环状物。
16.根据权利要求10所述的装置,其中所述卡钉提供所述骨移植材料的压缩。
17.根据权利要求10所述的装置,还包含:
c)骨移植材料,所述骨移植材料设置在所述通孔内。
18.根据权利要求10所述的装置,其中每个叉齿具有向内弯曲的远端部分。
19.根据权利要求10所述的装置,其中所述前壁中的所述凹部从所述笼的所述上表面延伸至所述下表面。
20.根据权利要求10所述的装置,其中每个叉齿完全设置在所述前壁的所述前表面的后方。
21.根据权利要求10所述的装置,其中所述卡钉延伸穿过所述笼的所述上表面并且穿过所述笼的所述底部表面。
22.根据权利要求10所述的装置,其中所述前壁具有后表面,并且其中所述第一叉齿和第二叉齿延伸穿过所述前壁的所述后表面。
23.根据权利要求10所述的装置,其中所述凹部限定延伸穿过所述前壁的上孔和延伸穿过所述前壁的下孔,并且其中所述叉齿延伸穿过所述上孔和下孔。
24.根据权利要求10所述的装置,其中至少一个叉齿延伸到所述通孔中。
25.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)单个卡钉,所述单个卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述卡钉包含限定第一构型和第二构型的形状记忆材料,其中至少一个叉齿在所述第一构型中与所述横杆形成第一角度并且在所述第二构型中与所述横杆形成第二角度,
其中所述第二角度小于所述第一角度。
26.根据权利要求24所述的装置,还包含:
c)骨移植材料,所述骨移植材料设置在所述通孔内,
其中所述卡钉在所述第二构型中提供所述骨移植物的压缩。
27.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)单个卡钉,所述单个卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆连接至所述笼的所述前壁,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述第一叉齿的近侧部分在第一方向上延伸,并且所述第一叉齿的远侧部分在第二方向上延伸,所述第二方向比所述第一方向更平行于所述笼的所述上表面。
28.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)单个卡钉,所述单个卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆连接至所述笼的所述前壁,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述第一叉齿的近侧部分延伸远离所述笼,并且所述第一叉齿的远侧部分朝所述笼延伸。
29.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,每个叉齿具有远端,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述卡钉包含限定第一构型和第二构型的形状记忆材料,
其中所述叉齿的所述远端在所述第一构型中间隔第一距离,并且其中所述叉齿的所述远端在所述第二构型中间隔第二距离,
其中所述第二距离小于所述第一距离。
30.根据权利要求29所述的装置,其中所述笼具有至少一个凹部,其中所述第二构型取决于凹部几何形状或覆盖板。
31.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,所述横杆包括中间部分;
c)通过所述卡钉的定位螺钉,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,并且
其中所述定位螺钉和所述卡钉的所述第一横杆的所述中间部分两者完全设置在所述前壁的所述前表面中的所述凹部中。
32.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,所述第一横杆具有后表面,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述横杆的所述后表面形成锋利的刃。
33.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,每个叉齿具有近侧部分和远侧部分,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,并且
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中每个叉齿的所述远侧部分形成加大的头部。
34.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,每个叉齿具有近侧部分和远侧部分,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中每个叉齿的所述远侧部分形成多个齿状物。
35.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,每个叉齿具有近侧部分和远侧部分,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述第一叉齿和所述第二叉齿呈斜交关系。
36.一种椎间融合装置,包括:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所
述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸,
其中所述横杆包括前表面,在所述前表面中具有适于联接到插入物器械的凹部。
37.一种椎间融合装置,其由以下组成:
a)椎间融合笼,所述椎间融合笼包括具有内有凹部的前表面的前壁、后壁、连接所述前壁和后壁的一对侧壁、上表面、下表面、和从所述上表面延伸至所述下表面的通孔,所述笼具有前端,
b)卡钉,所述卡钉包括第一横杆以及从所述第一横杆延伸的第一叉齿和第二叉齿,
其中所述卡钉的所述第一横杆的至少一部分设置在所述前壁的所述前表面中的所述凹部中,
其中所述第一叉齿在所述笼的所述上表面上方延伸,并且所述第二叉齿在所述笼的所述底部表面下方延伸。
38.一种将融合装置插入患者的椎间盘间隙中的方法,包括以下步骤:
a)选择具有前壁的融合笼,所述前壁具有内有凹部的前表面,
b)将所述笼插入所述盘间隙中使得所述前表面面向前,
c)将卡钉放置到所述前表面中的所述凹部中以产生零切迹装置。
CN201280025009.7A 2011-03-22 2012-03-20 具有内嵌式单件固定装置的融合笼 Pending CN103561690A (zh)

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