CN101909551A - 小外形椎间植入物 - Google Patents
小外形椎间植入物 Download PDFInfo
- Publication number
- CN101909551A CN101909551A CN2008801256198A CN200880125619A CN101909551A CN 101909551 A CN101909551 A CN 101909551A CN 2008801256198 A CN2008801256198 A CN 2008801256198A CN 200880125619 A CN200880125619 A CN 200880125619A CN 101909551 A CN101909551 A CN 101909551A
- Authority
- CN
- China
- Prior art keywords
- filling block
- plate
- implant
- arm
- intervertebral implant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
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- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
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- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
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- A—HUMAN NECESSITIES
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
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Abstract
本发明涉及一种小外形椎间植入物(10),其用于植入位于相邻椎体(V)之间内的椎间盘间隙(D)内。椎间植入物包括优选与填充块(20)耦接的板(40)。板优选由第一材料形成,且填充块优选由第二材料形成,第一材料与第二材料不同。板优选被设定尺寸和配置为使得板不延伸超出填充块的边界。以此方式,板优选不增大填充块的高度外形(hs),且板可结合填充块一起植入椎间盘间隙内。
Description
相关申请的交叉引用
本专利申请请求2007年11月16日提交的美国临时专利申请系列号第60/988,661号的优先权,其全部内容经引用并入本文。
技术领域
本发明涉及一种椎间植入物。更具体地,本发明的优选实施方式涉及一种用于植入相邻椎体之间的椎间盘间隙的小外形融合椎间植入物。
背景技术
成千上万的人忍受背痛。在一些情况下,为了缓解背痛和/或稳固脊髓结构,必需融合在一个或多个高度上的相邻椎体。一种已知的用于融合相邻椎体的方法是将一个或多个椎间植入物植入患病的椎间盘间隙。
发明内容
本发明的优选实施方式涉及一种小外形椎间植入物,其用于植入位于相邻椎体之间的椎间盘间隙内。椎间植入物包括优选耦接到填充块(spacer)的板。板优选被设定尺寸和配置为使得板不延伸超出填充块的边界。以此方式,板优选不增大填充块的高度外形(height profile),且板可结合填充块一起植入椎间盘间隙内。
在椎间植入物优选实施方式的另一方面,板由从板延伸的一个或多个臂耦接到填充块。臂被设定尺寸和配置为大体围绕并容纳填充块,以便填充块固定地耦接到板上。一个或多个臂可为从板延伸并完整围绕填充块的周缘臂。周缘臂可被设定尺寸和配置为由于温度变化而收缩。或者,臂可以是被设定尺寸和配置为容纳填充块的多个可变形臂。臂优选可变形为大体围绕和压缩抵住填充块,以将填充块固定到臂上。或者,一个或多个臂可选择性地彼此互连,以便第一臂和第二臂可围绕填充块放置,并且,然后收紧以将填充块有效地耦接到板上。
附图说明
当结合附图研读时,将更好地理解前述发明内容以及本申请优选实施方式的以下详述。为了图示本申请优选椎间植入物的目的,在附图中揭示了优选实施方式。然而,应该理解的是,本申请并不局限于所示的精确装置和工具。在附图中:
图1A图示了根据本发明第一优选实施方式的椎间植入物的后视透视图;
图1B图示了图1A所示的椎间植入物的俯视透视图;
图2图示了根据本发明第二优选实施方式的椎间植入物的前视透视图;
图3A图示了根据本发明第三优选实施方式的椎间植入物的后视透视图;
图3B图示了图3A所示的椎间植入物的主视透视图;
图4A图示了根据本发明第四优选实施方式的椎间植入物的俯视透视图;
图4B图示了图4A所示的椎间植入物的仰视平面图;
图5图示了根据本发明第五优选实施方式的椎间植入物的部分分解俯视透视图;
图6图示了根据本发明第六优选实施方式的椎间植入物的部分分解侧视透视图;
图6A图示了将处于已组装构造的椎间植入物沿图6的线6A-6A所剖得的图6所示的椎间植入物的截面视图;
图7图示了根据本发明第七优选实施方式的椎间植入物的前视透视图;
图8图示了根据本发明第八优选实施方式的椎间植入物的后视透视图;
图9图示了根据本发明第九优选实施方式的椎间植入物的后视透视图;
图10图示了根据本发明第十优选实施方式的椎间植入物的后视立面图,其中椎间植入物安装到脊柱上;
图11图示了根据本发明第十一优选实施方式的椎间植入物的后视透视图;以及
图12图示了根据本发明第十二优选实施方式的椎间植入物的后视透视图。
具体实施方式
以下描述中使用的特定术语仅为了方便起见而无意限制。用词“右”、“左”、“顶部”、“底部”指示所参照附图的方向。用词“向内”和“向外”分别指朝向和远离装置几何中心以及装置指定部件的方向。用词“前部的”、“背后的”、“上部的”、“下部的”以及相关用词和/或短语指示所参照的人体内的优选位置和方位,并且无意进行限制。术语包括上列用词及其派生词以及相似含义的用词。
参见图1A至12,现将参照附图描述本发明的示例性实施方式。总体而言,这些实施方式涉及一种小外形椎间植入物10。应当理解的是,尽管将结合脊柱外科描述椎间植入物10的各种实施方式,但本领域技术人员将意识到,椎间植入物10及其部件可用于植入身体的其他部位。本申请将始终使用相同的参考标号来描述本文所述的优选椎间植入物的十二个优选实施方式中的每一个相似或相同部件,且描述将集中于将该特定实施方式与其他的相区别的各实施方式的特定特征。
一般而言,椎间植入物10的各种实施方式被设定尺寸和配置为可被植入相邻椎体V之间。椎间植入物10可被设定尺寸和配置为能替换相邻椎体V之间的所有的或基本上所有的椎间盘间隙D、或者仅为椎间盘间隙D的一部分。另外,优选的椎间植入物10可配置为替换病人脊柱内的整个椎体V以及相关的椎间盘间隙D、或者多个椎间盘间隙D,这对于本领域技术人员而言是显见的。
各个优选实施方式的椎间植入物10优选包括板40和填充块(spacer)20。填充块20可包括第一插入端部22(例如前端部)、与第一插入端部22相对的第二端部24(例如后端部)、第一侧向端部26、第二侧向端部28、上表面30、以及下表面32。填充块20优选配置并设定尺寸为用于植入相邻椎体V之间的椎间盘间隙D内。填充块20优选配置并设定尺寸为保持和/或恢复相邻椎体V之间的期望椎间盘高度(intervertebral discheight)H。
板40优选被安装到填充块20的第二端部24,并且优选不延伸超出填充块20的边界。也就是说,板40的板高度hp优选在第二端部24处不超过填充块20的填充块高度hs,以便板40不会增大填充块20的高度外形。以此方式,椎间植入物10具有小外形。另外,以此方式,板40可整体植入相邻椎体V之间的椎间盘间隙D,以便板40不超出椎间盘间隙D的边缘。
填充块20的上和下表面30、32可包括一系列的齿钉、一个或多个隆凸(keel)、或其他相似突起物(未显示),以有助于将椎间植入物10固定到相邻椎体V的端板。替代地或附加地,填充块20可包括一个或多个被设计以容纳骨移植材料的窗口或通道(未显示)。例如,填充块20可包括一个或多个从上表面30延伸穿过填充块20至下表面32、并且供骨移植材料插入的竖向窗口或通道(未显示),以便在植入椎间植入物10之后通过竖向窗口或通道来促进骨生长。替代地或附加地,填充块20可具有一个或多个从第一侧向端部26延伸穿过填充块20至第二侧向端部28、并且用于容纳骨移植材料的水平窗口或通道(未显示)。
填充块20的上表面30和下表面32可包括曲形或锥形表面,以有助于提供适于脊柱的合适形状、或有助于以期望方式将相邻椎体V的端板定向。沿前后方向以及位于第一侧向端部26和第二侧向端部28之间的特定表面形状和曲率或锥度将取决于植入物10意图植入的和/或外科医生选择的位置。
椎间植入物10可由任何合适材料或如下材料的结合而构成,这些材料包括但不限于聚合物(例如聚醚醚酮(PEEK))、钛、钛合金、不锈钢、镍钛诺、氮化钽(TaN)、异体移植骨(allograft bone)、生物可吸收性材料(bioresorbable material)、镁、复合材料、合成骨焊接聚合物(synthetic bone-welding polymer)等等。板40可由不同于填充块20的材料形成。例如,板40可由诸如钛或钛合金的金属材料形成,而填充块20可由诸如异体移植物(allograft)、聚合物、生物可吸收性材料、陶瓷等非金属材料形成。或者,板40和填充块20可由同种材料形成。例如,板40和填充块20都可由氮化钽(TaN)构成。
板40优选包括一个或多个用于容纳诸如一个或多个骨螺钉(bone screw)75的紧固件75的穿孔42,紧固件75用于将椎间植入物10固定到相邻椎体V。板40可包括以任意数量结合形式设置的任意数量的穿孔42。例如,板40可包括两个、三个、四个或更多个穿孔42,用于容纳优选为等数量的骨螺钉75。此外,这些穿孔42可彼此交替设置,其中一个穿孔42向上倾斜而下一个穿孔42向下倾斜(图8和9),或者位于外侧上的穿孔42可向上倾斜而位于内侧上的穿孔42可向下倾斜(图5至7、11和12)等。
优选实施方式的板40包括至少两个穿孔42,穿孔42配置成容纳用于将椎间植入物10固定到相邻椎体V的两个紧固件75。这至少的两个穿孔42优选岔开,使得至少一个紧固件75固定进上椎体V,同时至少另一个紧固件75固定进下椎体V,以便相反力作用在板40和/或椎体V上。或者,板40可包括配置成容纳三个紧固件75的三个穿孔42。一个紧固件75可穿进上椎体V,而两个紧固件75可穿进下椎体V,或者反之亦然。或者,板40可包括配置成容纳四个或更多个紧固件75的四个或更多个穿孔42。在这种构造中,两个内部紧固件75可穿进上椎体V,而两个外部紧固件75可穿进下椎体V,或者反之亦然,或者它们的一些结合形式。
穿孔42各自均包括孔轴线43,使得穿孔42的一个出口通过椎间植入物10的上表面——可能通过用于接合上椎体V的上表面30,而穿孔42的另一个出口通过椎间植入物10的下表面——可能通过用于接合下椎体V的下表面32。延伸穿过孔42、优选沿着孔轴线43延伸穿过孔42的紧固件75,相对于填充块20的上表面30和下表面32形成紧固件角α,其中紧固件角α可介于二十度(20°)和五十度(50°)之间的范围内,且最优选位于三十度(30°)和五十度(50°)之间。紧固件角α对于所有的孔42可全部相同,或者对于每个孔42可不相同。
形成于板40内的穿孔42优选从椎间植入物10的中心被向外引导,优选以横向紧固件角Ω被向外导引。因此,穿孔42优选从椎间植入物10的中央平面11以横向紧固件角Ω向外横向延伸。横向紧固件角Ω对于所有的孔42可全部相同,或者对于每个孔42可不相同。
穿孔42的出口开口42a可形成于板40内或填充块20内。穿孔42也可包括一个或多个螺纹(未示出),其用于螺纹地接合在骨螺钉75的头部75a上形成的螺纹,以将骨螺钉75紧固到板40,并且相对于板40和/或填充块20大致锁定骨螺钉75的位置。
优选实施方式的椎间植入物10优选还包括用于将板40固定到填充块20的耦接机构100。一般而言,填充块20和板40在植入椎间盘间隙D之前,由耦接机构100耦接到一起。然而,在某些实施方式中,椎间植入物10可配置成,使得板40可在填充块20和板40之一已植入椎间盘间隙内之后耦接到填充块20。一旦耦接完成,填充块20和板40优选地形成为坚固的植入物。耦接机构100可为本文所述的耦接机构100或它们结构性等同方式中的任何一种。
参见图1A和1B所示的椎间植入物10的第一优选实施方式,耦接机构100可成从板40延伸的固体周缘臂102的形式。周缘臂102优选被设定尺寸和配置为围绕和/或容纳其内的填充块20。优选,填充块20包括形成于其外表面上的凹槽36,凹槽36用于容纳周缘臂102的至少一部分。
周缘臂102可由由于被加热或冷却而变形或收缩的材料制成,例如镍钛诺或由于温度变化而变形的任何其他合适的材料。以此方式,通过加热或冷却板40,板40可固定到填充块20,由此导致板40的周缘臂102收缩,这从而又导致周缘臂102沿周缘接合填充块20。该第一优选实施方式特别有用,这是由于它在制造填充块20的过程中能够实现相对宽松的容差。
参见图2所示的椎间植入物10的第二优选实施方式,耦接机构100可成开口环110形式。也就是说,板40可包括一对从其延伸的臂112、114,其中臂112、114被设定尺寸和配置为大体围绕填充块20的外周缘,以将填充块20耦接到板40。臂112、114优选配置成使得其可围绕填充块20变形。也就是说,臂112、114优选能够变形,使得臂112、114能围绕和/或挤压填充块20。第二优选实施方式中的椎间植入物10并不局限于具有一对臂112、114,而是可包括可变形以接合填充块20并相对于板40固定填充块20的、几乎任意数量的从板40延伸的臂。
如图2最佳显示的,开口环110可包括邻近植入物10第一插入端部22的敞开间隙116,敞开间隙116限定臂112、114的末端112a、114a。臂112、114的邻近末端112a、114a的端部优选可变形,以容许用臂112、114手动夹持填充块20,以将填充块20固定到板40。间隙116并不局限于大致沿填充块20的与板40相对的中间线定位,而是可相对于板40定位于几乎任意位置处,该位置容许臂112、114变形和夹持、或以另外方式将填充块20固定到板40。例如,间隙116可邻近优选填充块20的角部定位,该角部邻近第一插入端部22与第一和第二侧向端部26、28之一的交叉处。
参见图3A和3B,在椎间植入物10的第三优选实施方式中,开口环110’可被设定尺寸和配置为使得臂112’、114’可在它们的末端112a’、114a’彼此互连,以便在使用中,开口环110’可绕填充块20放置,且然后收紧以将板40有效地耦接到填充块20。第三优选实施方式中开口环110’的互连臂112’、114’可借助于任何方式收紧,这些方式包括但不限于棘轮锁定机构118、软管夹设计等。将开口环110’结合到第三优选实施方式中,使板40能够容纳可变尺寸和组成的填充块20。此外,将开口环110’结合到第三优选实施方式中,可使椎间植入物10能够现场组装。也可设想容许板40绕填充块20耦接的其他替代性设计。或者,将开口环110’结合到第三优选实施方式中,可使医生能够结合与本文所述预形成的填充块20相对的骨填塞材料(bone packing material),这一点对于本领域技术人员将是显见的。
参见图4A和4B所示的椎间植入物10的第四优选实施方式,耦接机构100可成凹槽120的形式,凹槽120优选从填充块20的上表面30延伸到下表面32,以在已组装的配置下接合在板40上形成并从板40延伸的凸部122。凹槽120可于填充块20的第一和第二侧向端部26、28内(仅处于第一和第二侧向端部26、28之一内)、于填充块20的内部中央形成或者以另外方式形成,以通过凸部122接合。例如,如图示,第四优选实施方式中的耦接机构100成燕尾接合的形式,其中凹槽120由从顶面30分别朝邻近第二端部24以及第一和第二侧向端部26、28的底表面32延伸的凹槽120构成。在该第四实施方式中,耦接机构100优选能够通过将凸部122滑进凹槽120而使板40以单向和滑动方式接合填充块20,其中凸部122和凹槽120形成以防止填充块20与板40接合,除非填充块20与板40对齐并沿单一接合方向滑动。或者,形成于板40上的凸部122可被设定尺寸和配置为横过填充块20弯曲,直到凸部122大体配合于凹槽120内部为止,由此通过压配装置将填充块20耦接到板40。应当理解,凸部122和凹槽120的位置可颠倒,使得填充块20和板40分别包括凸部和凹槽。另外,凸部122和凹槽120优选设定尺寸为将填充块20与板40对齐,以便在已组装的配置下,填充块20的顶面30与板40的顶面40a大致共平面,且填充块20的底面32与板40的底面40b大致共平面或对齐。具体地,凸部122和凹槽120可成锥形以促进填充块20整体插入而与板40的接合、以及在已组装的配置下板40的顶面和底面40a、40b与填充块20的顶面和底面30、32的对齐。
另外,第四优选实施方式中的耦接机构100可包括一个或多个可旋转凸轮125,可旋转凸轮125优选耦接到板40,以在填充块20滑到板40上之后将填充块20锁定到板40。或者,一个或多个可旋转凸轮125可作用为深度止挡器,以当填充块20滑到板40上以分别接合凸部122和凹槽120时,防止板40和填充块20彼此完全滑过。凸轮125可被包括在板40和填充块20之一或两者的上、下表面的任一个或两者上。优选地,例如,板40可包括位于板40的上和下表面上的一个或多个凸轮125,其中凸轮125被设定尺寸和配置为与形成在填充块20的上和下表面30、32上的一个或多个凹槽126接合。使用时,板40和填充块20可通过凸轮125的旋转而彼此耦接,这可通过手动或借助于工具完成。
参见图5所示的椎间植入物10的第五优选实施方式,耦接机构100可包括螺钉130,螺钉130被设定尺寸和配置为与分别穿过填充块20和板40的的第一和第二孔20a、40c的螺母或筒状螺纹销132匹配。螺钉130优选被设定尺寸和配置为与螺母或筒状螺纹销132匹配,螺母或筒状螺纹销132可从椎间植入物10的相对侧插入,以将填充块20固定到板40。使用时,螺钉130螺纹接合到螺母或筒状螺纹销132,由此将填充块20耦接到板40,如图6和6A最佳显示的,在椎间植入物10的第六优选实施方式中,螺钉130’可为管状的,以容许包括和使用阻挡板134及固定螺钉136,以防止紧固件75“退出(backing-out)”。
参见图7所示的椎间植入物10的第七优选实施方式,耦接机构100可成挠板(swag plate)140形式,其延伸进并接合在填充块20内形成的开孔142的末端。板40在优选实施方式中包括从板40延伸进开孔142的两个臂144、146。使用时,臂144、146的末端可被推压到一起,并且臂144、146被插入开孔142,直到臂144、146的端部延伸穿过开孔142为止,在此点,臂144、146被释放,以便臂144、146的端部,优选从其上突出,接合填充块20开孔142的末端。臂144、146在邻近其根部或邻近端部处能够弯曲或弯折,使得在组装过程中臂144、146的末端能够滑动通过开孔142。这种实施方式使得板40可从内向外接合填充块20。使用时,这种实施方式能够使组装相对简单,其容许通过X射线清楚看到椎间植入物10的前/后深度、并且在手术室内清楚看到椎间植入物10的组装。
参见图8所示的椎间植入物10的第八优选实施方式,填充块20可具有大体的矩形或方形形状,且板40邻近填充块20的角部安装。板40可由包括本文所述的那些用于此种目的现在或将来知晓的任何耦接机构100耦接到填充块20。使用时,将板40耦接到填充块20的角部、由于对向长端部之一,便利于通过斜角将椎间植入物10植入椎间盘间隙。这种实施方式优选用于颈部应用中以借助该途径限制岔开食道。
参见图9所示的椎间植入物10的第九优选实施方式,椎间植入物10包括相对较窄的横向覆盖区(footprint)。使用时,结合较窄的横向覆盖区,能够使椎间植入物10容纳较小尺寸的病人和/或容许较小尺寸的切口以便利于微创技术。第九优选实施方式的椎间植入物10可用作支柱,使得椎间植入物10的周围区域的余留区可填塞骨片(bone chip)、骨浆(putty)、骨水泥(bone cement)等。第九优选实施方式中的椎间植入物10还可使椎弓根后路途径能够实现。该椎间植入物10可用于椎体切除(corpectomy)以及椎间盘切除(discectomy)。应当注意,本文所披露的任一种实施方式可被设定尺寸和配置为包括较窄横向覆盖区。
替代地和/或附加地,如图10最佳显示的,椎间植入物10的第十优选实施方式包括安装到两个填充块20上的板40,使得椎间植入物10能够跨越一个或多个椎体V。
参见图11所示的椎间植入物10的第十一优选实施方式,板40可在无填充块20与其耦接的情况下植入相邻椎体之间,使得板40可植入相邻椎体之间,以保持盘间隙的高度,同时留给医生选择以确定是否将未耦接的板40、骨片、骨水泥等插入椎间盘间隙D的剩余部分。
本文所披露的各种耦接机构100用于板40到填充块20的附加的耦接方法也可包括粘合剂结合。也就是说,结合本文所披露的各种耦接机构100可使用将填充块20结合到板40的各种方法。这些方法可包括但不限于化学粘合或处理、超声波、紫外光、粘合剂、骨焊接、夹持等。这些方法可附加或替代其他耦接机构100使用。
此外,参见图12所示的椎间植入物10的第十二优选实施方式,椎间植入物10可完全由单块材料构成,并具有倾斜孔和紧固件75。椎间植入物10和紧固件75优选由同种材料构成,该材料可以是但不限于聚醚醚酮、钛、可吸收聚合物或镁。第十二优选实施方式中的椎间植入物10可只由在植入之后完全吸收进病人身体的可吸收材料构成。优选地,第十二实施方式中的椎间植入物10由异体移植物材料制成。第十二实施方式中的椎间植入物10可以被构成以使得紧固件75可由合成骨材料形成,其可插入并在其后焊接到相邻椎体V,从而将椎间植入物10耦接到相邻椎体V。或者,合成骨材料紧固件75可以无螺纹的销形式构成。这种合成骨紧固件75可为非螺纹的,或者包括例如抗推出型圣诞树螺纹(push-out resistant Christmas tree thread)、或其他类型的螺纹。结合合成骨材料紧固件75,通过从植入物10中去除金属部件而便利了椎间植入物10的制造,由此能够实现只使用同种异体移植物或可吸收材料的构造。
或者,第十二优选实施方式的椎间植入物10可结合耦接到填充块20并通过诸如超声波而焊接到合成骨材料紧固件75的板40,由此消除了当在植入位置将紧固件安装进穿孔42时对机械锁定机构的需要。使用时,由异体移植物或可吸收材料制造填充块20和结合合成骨材料紧固件75,这导致如果有植入物10的任何部件保留于病人体内的话,由于吸收进病人体内的材料,仅有板余留在病人体内。然而,应当注意,设想到可现场焊接到相邻椎体V的合成骨材料紧固件75,可结合现在或将来知晓的任何椎间植入物10一起使用,所述植入物10包括本文所述的椎间植入物10的各种实施方式中的任一种。
虽然各种不同构造可对侧向、前-侧向或后面途径是可能的,但十二个优选实施方式中的每一个的椎间植入物10大致被设定尺寸和配置为用于前面插入。除了所述特征,椎间植入物10可包括与仪器匹配的螺纹孔、槽或通道,以便利于操纵和插入。
虽然详细描述了本发明及其优点,但应当理解,在不脱离所附权利要求限定的本发明的主旨和范围的情况下可对本文进行各种变化、替代以及改变。此外,本专利申请的范围并不意图局限于本说明书描述的方法、机器、制造、物质组成、装置、方法以及步骤的特定实施方式。如本领域技术人员从本发明的公开内容中将容易理解,根据本发明,可利用与本文所述的相应实施方式相比执行大体相同功能或获得大体相同结果的现有或以后发展的方法、机器、制造、物质组成、装置、方法或步骤。
本领域技术人员可以理解,在不脱离所附权利要求的宽广范围的情况下,可对本发明进行各种修改和改变。以上已讨论的这些情况中的一些及其他的情况对于本领域技术人员而言将是显见的。例如,本发明可用于脊柱的不同部分中,包括但不限于颈部区域。
Claims (13)
1.一种小外形椎间植入物,其被设定尺寸和配置为植入相邻的上椎体和下椎体之间,所述植入物包括:
填充块,其具有第一插入端部、与所述第一插入端部相对的第二端部、第一侧向表面、第二侧向表面、当处于已植入配置时用于接触所述上椎体的上表面、以及当处于所述已植入配置时用于接触所述下椎体的下表面;以及
板,其耦接到所述填充块的第二端部,所述板包括多个穿孔,所述穿孔用于容纳将所述植入物固定到所述相邻的椎体的多个骨螺钉,所述板具有高度Hp,而所述填充块的第二端部具有高度Hs,所述板的高度Hp等于或小于所述填充块高度Hs,使得所述板不会增大所述填充块的高度外形;并且
其中,所述板通过从所述板延伸的一个或多个臂耦接到所述填充块,所述一个或多个臂大体围绕所述填充块的外周边。
2.权利要求1所述的植入物,其中,所述板由第一材料形成,且所述填充块由第二材料形成,所述第一材料与所述第二材料不同。
3.权利要求2所述的植入物,其中,所述第一材料是金属材料,所述第二材料是非金属的。
4.权利要求1所述的植入物,其中,所述一个或多个臂是完整围绕所述填充块的外周边延伸的周缘臂。
5.权利要求1所述的植入物,其中,所述填充块的外周边包括在其内形成的用于容纳所述周缘臂的至少一部分的凹槽。
6.权利要求1所述的植入物,其中,所述周缘臂配置为由于温度变化而收缩。
7.权利要求1所述的植入物,其中,所述一个或多个臂是呈包括多个臂的开口环的形式。
8.权利要求7所述的植入物,其中,用以限定所述开口环的所述多个臂是可围绕所述填充块变形的。
9.权利要求8所述的植入物,其中,所述多个可变形臂是具有第一端部的第一臂和具有第二端部的第二臂,其中,当所述第一臂和所述第二臂围绕所述填充块变形时,所述第一臂和所述第二臂的第一端部及第二端部在它们之间限定间隙。
10.权利要求9所述的植入物,其中,所述间隙沿所述填充块的所述第一插入端部定位。
11.权利要求9所述的植入物,其中,所述间隙位于所述填充块的角部处,所述角部位于所述第一侧向表面和所述第二侧向表面中的一个与所述第一插入端部的交叉处。
12.权利要求7所述的植入物,其中,用以限定所述开口环的所述多个臂选择性地彼此互连,使得所述第一臂和所述第二臂可围绕所述填充块放置,并然后收紧以将所述板有效地耦接到所述填充块。
13.权利要求12所述的植入物,其中,所述第一臂和所述第二臂包括用于围绕所述填充块把所述开口环收紧的互连棘轮机构。
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CN104394804A (zh) * | 2012-06-29 | 2015-03-04 | 德普伊新特斯产品有限责任公司 | 横向插入脊柱植入物 |
US9943417B2 (en) | 2012-06-29 | 2018-04-17 | DePuy Synthes Products, Inc. | Lateral insertion spinal implant |
US11413159B2 (en) | 2012-06-29 | 2022-08-16 | DePuy Synthes Products, Inc. | Lateral insertion spinal implant |
US11717421B2 (en) | 2012-06-29 | 2023-08-08 | DePuy Synthes Products, Inc. | Lateral insertion spinal implant |
CN103393487A (zh) * | 2013-07-16 | 2013-11-20 | 江苏双羊医疗器械有限公司 | 椎间融合器 |
CN105342680A (zh) * | 2015-10-13 | 2016-02-24 | 广州聚生生物科技有限公司 | 一种颈椎前路钢板cage一体化内固定系统 |
CN108852561A (zh) * | 2018-03-23 | 2018-11-23 | 广州华钛三维材料制造有限公司 | 分体式人工椎体及其使用方法 |
CN108852561B (zh) * | 2018-03-23 | 2024-03-01 | 广州华钛三维材料制造有限公司 | 分体式人工椎体及其使用方法 |
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CO6300919A2 (es) | 2011-07-21 |
JP2011502708A (ja) | 2011-01-27 |
US9744049B2 (en) | 2017-08-29 |
EP2217179A1 (en) | 2010-08-18 |
US20120323330A1 (en) | 2012-12-20 |
US20100312346A1 (en) | 2010-12-09 |
US8540774B2 (en) | 2013-09-24 |
US20150342750A1 (en) | 2015-12-03 |
US20150164653A1 (en) | 2015-06-18 |
US20170333201A1 (en) | 2017-11-23 |
BRPI0820172A2 (pt) | 2015-06-16 |
WO2009064644A1 (en) | 2009-05-22 |
US9005295B2 (en) | 2015-04-14 |
US10137003B2 (en) | 2018-11-27 |
US10543102B2 (en) | 2020-01-28 |
AU2008321212A1 (en) | 2009-05-22 |
KR20100105580A (ko) | 2010-09-29 |
CA2705684A1 (en) | 2009-05-22 |
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