CN101156810B - 用于肩关节成形术的关节盂部件 - Google Patents
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Abstract
用于肩部关节成形术的关节盂部件器械包括支承部分和连接到支承部分的柄部分。柄部分从归一化关节盂穹窿形态建模。用于制成用于肩部关节成形术的关节盂部件的方法包括获得归一化关节盂穹窿形态的模型且基于模型产生关节盂部件的柄部分。
Description
技术领域
本发明一般地涉及整形术领域,且更特定地涉及用于肩关节成形术的关节盂(glenoid)部件器械及其制造方法。
背景技术
关节成形术是以一个或多个假体对关节的一个或多个骨结构的外科置换。肩关节成形术经常涉及以假体关节盂部件来置换肩胛骨的关节窝。常规的关节盂部件典型地提供了一般地面向外侧或面向外的一般地凹入的支承表面,假体肱骨头(或替代地在关节盂半关节成形术中剩余的自然肱骨头)可以在关节运行期间支承在支承表面上。常规的关节盂部件典型地也包括一般地内侧地或向内地突出的柄以将关节盂部件固定在通过合适地切除关节窝和从关节盂穹窿(vault)合适地切除松质骨而构造的腔内。
已建议多种柄设计以保证关节盂部件在关节盂穹窿内的正确的对齐以及牢固和持久的固定。然而,关节盂穹窿具有复杂的形态。虽然将柄三维成形以与关节盂穹窿的骨内膜壁相容可能潜在地显著提高关节盂部件的固定,但历史上的设计没有完全利用此机会。
一个有利的解决方案在2004年4月1日作为US2004/0064189A1公布的名为“Concave Resurfacing Prosthesis”的共同待决的申请S.N.10/259,045中描述,此披露在此通过参考完全合并。在此解决方案中,关节盂部件配合为至少部分地填充形成在关节盂穹窿内的腔。部件具有一般地椭圆形的倒转穹顶形状以一般地符合穹窿的形状。然而,在‘045申请中认识到的是,每个患者独特的解剖结构使得关节盂部件对于穹窿腔的准确地定尺寸是困难的。为解决此困难,’045申请披露了提供一系列不同尺寸的关节盂部件。
存在对于更接近地三维地定尺寸和成形的关节盂部件的需求以填充关节盂穹窿内的腔。存在对于便于准备这样的部件,且特别地是对于大多数患者的解剖结构具有更通用的应用性的部件的技术的进一步的需求。
发明内容
本发明提供了用于肩关节成形术的关节盂部件器械。器械包括支承部分且进一步包括从支承部分延伸的柄部分。柄部分模拟了归一化的或病态的关节盂穹窿形态。
在替代实施例中,本发明提供了用于制成用于肩关节成形术的关节盂部件的方法。方法包括获得正常或病态的关节盂穹窿形态的模型且进一步包括基于模型生产关节盂部件的部分。
在另一个替代实施例中,本发明提供了用于包括自然肱骨部件和假体肱骨部件的至少一个的肩关节的关节盂部件器械。器械包括用于靠自然肱骨部件和假体肱骨部件的至少一个支承的装置。器械进一步包括从支承装置延伸的用于模拟正常关节盂穹窿形态的装置。
参考如下的包括了制成和使用目前构想的本发明的最佳模式披露的详细描述和附图,本发明的以上所述的特征和优点以及另外的特征和优点将对于本领域一般技术人员显见。
附图说明
图1示出了包括根据本发明的典型的关节盂部件的典型的肩部假体的分解透视图;
图2a、图2b和图2c示出了用于构造图1的假体的柄以模拟正常或病态的关节盂穹窿形态的典型方法的流程图;
图3示出了相对于由肩胛骨的三个表面点限定的典型的肩胛骨的平面体的直角(“笛卡尔”)参考坐标系;
图4示出了典型的关节窝的上下(“SI”)尺度和前后(“AP”)尺度;
图5示出了列出了对于来自肩胛骨样本的六个典型的肩胛骨子组的基于肩胛骨样本的SI尺度的典型范围和典型平均SI尺度的表;
图6示出了典型的关节窝的骨内膜壁的典型的大体上完整的描绘(向典型的关节窝的下端);
图7示出了作为在典型的肩胛冈(scapular spine)的区域内的窝封闭的结果的典型的关节窝的骨内膜壁的典型的部分的描绘(向典型的关节窝的下端);
图8示出了肩胛骨样本的正常的关节盂穹窿形态的相对地复杂的模型的体积表现的视图;
图9示出了基于图8的相对地复杂的3D模型的肩胛骨样本的正常的关节盂穹窿形态的中间3D模型的体积表现的视图;
图10示出了基于图9的中间3D模型的肩胛骨样本的平均正常关节盂穹窿形态的简化3D模型的透视图;
图11示出了图10的简化3D模型的三角形截面的每个的上视图;
图12示出了列出了图10的简化3D模型的各自的宽度尺度、高度尺度和作为结果的三角形截面的面积的表;和
图13示出了列出了图10的简化3D模型的三角形截面的各顶点相对于图3的直角(“笛卡尔”)参考坐标系的坐标的表。
具体实施方式
在全部如下的描述和附图中类似的参考数字指类似的零件。
图1示出了典型的肩部假体100的分解透视图,肩部假体100包括根据本发明的典型的关节盂部件120。假体100也包括典型的肱骨部件140。肱骨部件140以已知的方式构造为植入到肱骨160内且置换自然肱骨头(未示出)且因此包括假体肱骨头180。
关节盂部件120构造为植入到肩胛骨200内且置换自然关节窝(在图1中未示出)。关节盂部件120包括支承件220。支承件220由耐久性生物相容塑料或任何其他合适的耐久性生物相容性材料制成。例如,支承件220可以由聚乙烯制成。很适合于支承件220的一种特定的聚乙烯是高分子量聚乙烯,例如超高分子量聚乙烯(“UHMWPE”)。一种这样的UHMWPE由Johnson&Johnson of New Brunswick,New Jersey以MARATHON UHMWPE销售,且更完全地在授予McKellop的美国专利No6,228,900和No6,281,264中描述,它们在此通过参考合并。支承件220包括一般地凹入的表面240,表面240如已知地构造为靠着假体肱骨头180支承,或在其中剩余了自然肱骨头的情况下构造为靠着自然肱骨头支承。支承件220进一步包括柱260或能将支承件匹配到例如以下将论述的柄280的关节盂部件的柄元件的一些其他特征部或机构。
关节盂部件120也包括柄280。如在下文中将进一步论述,柄280构造为模拟正常或病态的关节盂穹窿形态,使得柄280配合在腔300内,腔300可以至少部分地由肩胛骨200的骨内膜壁320限定。为此目的,注意到的是,本发明可以提供一系列严格地定比例或定尺寸的柄280的形式,以适应可能在不同的患者中存在的多种关节盂穹窿尺寸。也应认识到的是,肩胛骨200的关节盂穹窿可以包括一些松质骨340。
柄280由合适的生物相容金属制成,例如钴铬合金、不锈钢合金、钛合金或任何其他合适的耐久性材料。在替代的实施例中,柄280可以包括多孔涂层以便于骨长入关节盂部件120内。多孔涂层可以是任何合适的多孔涂层,且可以例如是Johnson&Johnson of New Brunswick,NewJersey的产品POROCOAT,且该产品更完全地在授予Pillar的美国专利No3,855,638中描述,在此通过参考将其合并。柄280可以是实心的或合适的耐久性材料的薄壳。
柄280包括一般地上表面360、一般地下表面380、一般地前-内侧表面400、一般地后-内侧表面420和一般地外侧表面440。柄280限定了从表面440向内延伸的穴460。穴460接收柱260(支承件220的柱260)。柄280也可以限定贯通通道480,通道480与穴460同轴地延伸通过柄280。
关节盂部件120进一步包括例如具有螺钉形式的紧固件500。螺钉或多个螺钉可以是能另外地将关节盂部件120固定在肩胛骨200内的任何螺钉。例如螺钉可以是皮质骨螺钉,例如从DePuy Orthopaedics,Inc.ofWarsaw,Indiana获得的DePuy Ace类型中的8150-36-030。螺钉具有足以正确地将关节盂部件120固定在肩胛骨200内的直径,且例如可以具有大约2至5毫米的直径。螺钉可以具有能正确地将关节盂部件120固定在肩胛骨200内的任何合适的长度。例如,螺钉具有从10至60毫米的长度。螺钉可以以任何合适的方式固定到柄280。在典型的实施例中,紧固件500延伸通过贯通通道480(柄280的贯通通道480)。然而,注意到的是,紧固件500并非不可缺少的,且可以从替代实施例中省略。
支承件220以任何合适的方式固定到柄280。例如,支承件220可以结合到柄280或支承件220可以由聚乙烯制成且压缩模制到柄280。替代地,支承件220可以例如通过粘合剂胶合到柄280。替代地,支承件220可以通过锥度锁定或另外地通过将柱260压力配合到穴460内而机械地互锁到柄280,或柱260和穴460可以包括任何其他合适的互锁特征部,例如肋(多个肋)、唇缘(多个唇缘)、棘爪(多个棘爪)和/或其他突出件(多个突出件)和匹配沟槽(多个匹配沟槽),通道(多个通道)或凹痕(多个凹痕)(未显示)。另外地,注意的是,在替代的实施例中,支承件220和柄280可以整合为由UHMWPE或任何其他合适的材料制成的单一的零件-省略或不省略紧固件500。
本发明构想了用于准备将满足大多数患者的解剖结构的关节盂部件的方法。因此,根据一个方法,在图2a至图2c的流程图中描述的步骤对应于用于模拟正常或病态关节盂穹窿形态的一个典型的方法,且最终准备优化地定尺寸和构造的植入物。
在第一步骤1020(图2a)中,选择合适的人体肩胛骨样本(“肩胛骨样本”)以代表预期患者人群的合理的人口统计学截面。在典型的实施例中,肩胛骨样本包括从不同来源选择的六十一个人的肩胛骨,三十二个为左侧且二十八个为右侧。多种标准应用于选择过程,使得样本尽可能代表患者人群,包括身高、性别和种族。
在步骤1040处(图2a),对样本中的每个肩胛骨使用Siemens VolumeZoom Scanner(可从Siemens Medical System of Malvern,Pennsylvania获得的CT扫描仪)进行体积扫描。注意到的是,肩胛骨在CT图像中的初始定向取决于肩胛骨在CT扫描仪内的物理放置和定向,这固有地难于再现。然而,将肩胛骨放置于仰卧解剖学位置且轴向图像以1mm增量获得(具有0.27至0.35mm的平面内分辨率)。在120kV,10mA下使用180mm视场大焦点且以0.5秒/转的旋转速度获得图像。均值平滑(medium-smooth)重构算法用于图像重构。
图3示出了相对于由肩胛骨1080的三个表面点1100、1120和1140限定的典型的肩胛骨1080的平面体的直角(“笛卡尔”)参考坐标系1060。如从图3中至少部分地可辨别,点1100代表肩胛骨1080的下尖端,点1120代表肩胛冈与肩胛骨1080相交的肩胛骨1080的内侧极且点1140代表了典型的关节窝1160的中心。进一步地,应认识到的是,其中,参考坐标系1060限定了XZ平面1180、XY平面1190、从肩胛骨的内侧极延伸到关节窝1160的中心的矢量1200和X轴线1220。
在步骤1230处(图2a),肩胛骨的三维(“3-D”)图像被再取样以将它们在参考坐标系1060(见图3)上对齐用于随后的分析。在典型的实施例中,点1100、1120和1140在每个肩胛骨的3-D图像上交互地选择且肩胛骨再次被再取样,使得每个肩胛骨的主体的平面对齐为平行于参考坐标系1060(见图3)的XZ平面1180,且使得从肩胛骨的内侧极延伸到关节窝1160的中心的矢量1200平行于X轴线1220(见图3)。
图4示出了关节窝1160的上下(“SI”)尺度1240和前后(“AP”)尺度1260。在步骤1280处(图2a),每个肩胛骨的SI尺度1240和AP尺度1260(见图4)通过使用合适的软件程序交互地在3-D图像上放置点确定。
在步骤1300(图2a)处,基于肩胛骨样本的SI尺度1240(见图4)将肩胛骨样本任意地分为六个子组,以降低形态比较的初始个数且便于确定全局或总体的典型关节盂穹窿尺寸和典型关节盂穹窿形态之间的关系。图5示出了表,表中列出了基于肩胛骨的SI尺度的六个子组的典型范围和典型平均SI尺度。
在步骤1420处(图2a),肩胛骨的关节盂穹窿的骨内膜壁320被手工描绘且数字化。图6示出了典型的关节窝1160的骨内膜壁320的大体上完整的描绘1320(向典型的关节窝1160的下端)。图7示出了作为在典型的肩胛冈1380的区域内的窝封闭的结果的典型的关节窝1160的骨内膜壁320的部分描绘1360(向典型的关节窝1160的下端)。参考线1400(图7)在以下进一步论述。每个骨内膜边界在相应再取样图像(见图6)的二维(“2-D”)XY切片的每个上描绘,从相应关节窝开始且内侧地延伸到肩胛冈1380(见图7),但不延伸到肩胛冈的内部内。都在肩胛冈的区域内的前壁和后壁描绘终止在参考线1400(见图7)处,参考线1400限定为同时垂直于相应关节窝的平面且切向于相应骨内膜凹槽的表面。
在步骤1440(图2a)处,每个限定了相应关节盂穹窿的骨内膜描绘通过其在SI尺度中的范围被规一化。此措施从关节窝的骨内膜壁的下极限到上极限在图像的Z维度(见图3)内进行。穹窿被在所有三个维度(即X、Y和Z方向)内严格地定比例,以将穹窿描绘的SI尺度规一化到其对应的子组内的平均值。此解决方案大体上消除了不同穹窿之间的尺寸差异,从而便于合适的形状确定。假定右侧和左侧肩胛骨大体上解剖学对称。在此假定下,将右侧穹窿关于XZ平面(见图3)镜像,以允许在完整的样本内进行形态确定。在典型的实施例中,使用迭代最近点(ICP)算法将在六个肩胛骨子组的每个内的规一化的穹窿在空间上对齐(即“对准”),算法例如在Besl P.J.和Mckay N.D.的“A methodfor registration of 3-D shapes”,IEEE Trans.Pattern Analysis and MachineInterlligence1992,卷14,239至256页中描述,在此通过参考将其合并。
在步骤1460处(图2b),然后对于肩胛骨样本的肩胛骨的每个子组基于在子组中由穹窿的每个所施加的形态约束来构建规一化的关节盂穹窿形态的3-D模型。对于每个子组,将对准的关节盂穹窿组重叠且将子组的近似平均骨内膜壁320(见图6和图7)手工数字化。每个骨内膜边界在相应再取样图像(见图6)的二维(“2-D”)XY切片的每个上描绘,从相应关节窝开始且内侧地延伸到肩胛冈1380(见图7),但不延伸到肩胛冈的内部内。在肩胛冈的区域内的前壁和后壁描绘都终止在参考线1400(见图7)处,参考线1400限定为同时垂直于相应关节窝的平面且切向于相应骨内膜凹槽的表面。作为结果的3-D模型满足对于组内的每个穹窿的骨内膜边界。
在步骤1480处(图2b),基于由用于每个子组的模型所施加的形态约束构建了相对地复杂的3-D模型1500(见图8),该3-D模型近似了整个肩胛骨样本的平均规一化关节盂穹窿形态。将子组的对准的关节盂穹窿重叠且将子组模型的近似平均骨内膜壁320(见图6和图7)手工数字化。每个骨内膜边界在相应再取样图像(见图6)的二维(“2-D”)XY切片的每个上再次描绘,从相应关节窝开始且内侧地延伸到肩胛冈1380(见图7),但不延伸到肩胛冈的内部内。在肩胛冈的区域内的前壁和后壁描绘都终止在参考线1400(见图7)处,参考线1400限定为同时垂直于相应关节窝的平面且切向于相应骨内膜凹槽的表面。作为结果的3-D模型1500满足肩胛骨样本内的每个穹窿的骨内膜壁边界。
图8示出了在先前步骤中生成的相对地复杂的3-D模型1500的体积表现。如在图8中至少部分地可辨别,模型1500包括一般地上表面1520、一般地下表面1540、一般地前-内侧表面1560、一般地后-内侧表面1580和一般地外侧表面1600。应认识到的是一般地上表面360(柄280的上表面360)粗略地对应于一般地上表面1520、一般地下表面380(柄280的下表面380)粗略地对应于一般地下表面1540、一般地前-内侧表面400(柄280的前-内侧表面400)粗略地对应于一般地前-内侧表面1560、一般地后-内侧表面420(柄280的后-内侧表面420)粗略地对应于一般地后-内侧表面1580且一般地外侧表面440(柄280的外侧表面440)粗略地对应于一般地外侧表面1600。
在步骤1720处(图2b),通过在相对地复杂的3-D模型1500(见图8)的多个XY平面(见图3)截面上由模型壁限定的边界内内接(inscribe)多个相互平行的三角形截面构建了中间3-D模型1700。图9示出了基于相对地复杂的3-D模型1500(见图8)的肩胛骨样本的规一化关节盂穹窿形态的此中间3-D模型1700的体积表现。
在步骤1800处(图2b),通过从中间3-D模型1700(见图9)选择五个等距地上下分开的相互平行的三角形截面1840、1860、1880、1900、1920(见图10和图11)构建了肩胛骨样本的平均规一化关节盂穹窿形态的简化3-D模型1820(见图10)。这些三角形截面选择为占中间3-D模型1700的体积的90%以上,具有几乎可忽略的前壁和后壁的空间偏差。应认识到的是,简化3-D模型1820因此提供了规一化关节盂穹窿形态的简明几何模型,同时大体上保持了骨内膜壁320(见图1)所固有的形态细微差别。
肩胛骨样本的平均规一化关节盂穹窿形态的简化3-D模型1820的透视图在图10中示出。图11示出了从简化3-D模型1820获得的三角形截面1840、1860、1880、1900、1920的每个的上视图。如从图10和图11中至少部分地可辨别,截面1840包括一般地内侧定位的顶点2000、一般地前定位且一般地外侧定位的顶点2020和一般地后定位且一般地外侧定位的顶点2040。类似地,截面1860包括一般地内侧定位的顶点2060、一般地前定位且一般地外侧定位的顶点2080和一般地后定位且一般地外侧定位的顶点2100。截面1880包括一般地内侧定位的顶点2120、一般地前定位且一般地外侧定位的顶点2140和一般地后定位且一般地外侧定位的顶点2160。下一个截面1900包括一般地内侧定位的顶点2180、一般地前定位且一般地外侧定位的顶点2200和一般地后定位且一般地外侧定位的顶点2220。最后,截面1920包括一般地内侧定位的顶点2240、一般地前定位且一般地外侧定位的顶点2260和一般地后定位且一般地外侧定位的顶点2280。
进一步地,截面1840包括在顶点2020和顶点2040之间延伸的“底”边2400,截面1860包括在顶点2080和顶点2100之间延伸的“底”边2420,截面1880包括在顶点2140和顶点2160之间延伸的“底”边2440,截面1900包括在顶点2200和顶点2220之间延伸的“底”边2460,且截面1920包括在顶点2240和顶点2280之间延伸的“底”边2680。
另外,截面1840包括在顶点2000和顶点2020之间延伸的“左”边2500、截面1860包括在顶点2060和顶点2080之间延伸的“左”边2520、截面1880包括在顶点2120和顶点2140之间延伸的“左”边2540、截面1900包括在顶点2180和顶点2200之间延伸的“左”边2560且截面1920包括在顶点2240和顶点2260之间延伸的“左”边2580。
最后,截面1840包括在顶点2000和顶点2040之间延伸的“右”边2600,截面1860包括在顶点2060和顶点2100之间延伸的“右”边2620,截面1880包括在顶点2120和顶点2160之间延伸的“右”边2640,截面1900包括在顶点2180和顶点2220之间延伸的“右”边2660且截面1920包括在顶点2260和顶点2280之间延伸的“右”边2480。
三角形截面1840、1860、1880、1900、1920的相应底边2400、2420、2440、2460、2680限定了对应于典型的关节窝1160(见图3)的区域的简化3-D模型1820的外侧边界。进一步地,三角形截面1840、1860、1880、1900、1920的相应左边2500、2520、2540、2560、2580限定了简化3-D模型1820的前边界,而三角形截面1840、1860、1880、1900、1920的相应右边2600、2620、2640、2660、2480限定了简化3-D模型1820的后边界。三角形截面1840、1860、1880、1900、1920的相应一般地内侧定位的顶点2000、2060、2120、2180、2260从简化3-D模型1820的下端处的更后的方位扫到简化3-D模型1820的上端处的更前的方位。
三角形截面1840、1860、1880、1900、1920的每个具有相应宽度尺度(“w”)和高度尺度(“d”)。图12中的表总结了相应宽度尺度(“w”)(见图11)、高度尺度(“d”)(见图11)和作为结果的三角形截面1840、1860、1880、1900、1920的面积。图13中的表列出了三角形截面1840、1860、1880、1900、1920的相应顶点相对于直角(“笛卡尔”)参考坐标系1060(见图3)的坐标。
构想的是,简化3-D模型1820可以严格地根据SI尺寸(见图4)定比例以适应更大或更小的关节盂穹窿,同时维持基本形态模型的完整性。
在步骤3000(图2c)处,柄280最初地形成为简化3-D模型1820的形状。在一个实施例中,此步骤3000构想为将限定了简化3-D几何模型1820的顶点的每个的坐标载入到合适的立体光刻系统中。立体光刻系统可以运行以产生由塑料、蜡或在本领域中已知的任何其他合适的材料制成的相应的3-D形式。然后从3-D形式准备模具且形成柄280,例如使用此模具通过注模。在替代的实施例中,柄280可以另外地合适地根据简化3-D模型1820通过立体光刻、手工或已知的任何其他合适的方法(带有或不带有介入形式或模具)产生。
在随后的步骤中,柄280被机加工以提供准备柄以用于植入所必需的特征部。因此,在步骤3020处(图2c),在柄280内打孔出穴460。在步骤3040处(图2c),通过柄280打孔贯通通道480(与穴460同轴)。应理解的是,从3-D模型生产的粗略的柄可以根据其他方案取决于柄280和支承件220之间的界面被机加工。进一步构想的是,柄280可以形成为实心或空心主体且可以进一步提供有一定的表面特征以便于将柄固定在关节盂穹窿内。
改进的柄然后可以根据已知的外科过程植入。例如,可以首先将松质骨340从肩胛骨200的关节盂穹窿去除以构造腔300,腔300延伸到骨内膜壁320(见图1)。柄280然后插入到腔300内与骨内膜壁320紧密接触以便于关节盂部件120在肩胛骨200内的对齐和可靠的固定。可以使用骨接合剂来提高柄在骨内的固定。将紧固件480插入通过贯通通道480以与肩胛骨200接合。在紧固件480完全插入到肩胛骨200内后,柱260插入到穴460内且将支撑件220固定到柄。
本发明的前述描述仅是示例性的而非意图于将本发明的范围限制为所阐述的精确的术语。进一步地,虽然本发明已参考某些示例性实施例详细描述,但在本发明的范围和精神内存在多种变化和修改,如在如下的权利要求书中描述和限定。
例如,关节盂部件可以是实心体或空心主体。特别地,柄280可以形成为实心植入物,但可以优选地至少是部分空心的以降低部件的重量和材料要求。如果植入物部件是空心的,则它必须具有足够的壁厚以在最大预期生理载荷下维持其强度和完整性。
本发明构想了形成为接近地近似了归一化关节盂穹窿形态的关节盂柄部件。在以上所论述的实施例中,归一化形态由从其获得了相关测量值的人体肩胛骨的相对地大的样本尺寸生成。发现根据本发明获得的归一化部件尺度很好地接近了样本人群的真实尺度。特别地,发现取样的关节盂穹窿的表面点的至少85%变化小于2.0mm,这代表了穹窿骨内膜壁的给定总体尺度的最小变化。
在生成用于以上所述的不同的组的穹窿模型中发现,对于整个穹窿几何形状组,组成了内表面模型的表面点的98.5%变化小于2.0mm。此发现反驳了穹窿形态取决于全局穹窿尺寸的现有假设。作为结果,从组模型中使用与以上所述相同的步骤导出了单一的穹窿模型。此最后模型在图9中描绘。从对于完整样本人群的实际关节盂穹窿形态的模型开发了如以上所述的简化几何模型。此简化模型被发现占实际样本人群的模型的体积的80%以上,而同时保持了关节盂穹窿骨内膜表面所固有的形态细微差别。
在本发明的一个方面中,开发了对于数个离散关节盂尺寸组的形态模型。此组可以优选地根据SI(上下)尺度分组,如在图5的表中总结。此简化模型用于制造在对应于组4的图示的实施例中的部件模具,但应理解的是,可以直接将尺度作为SI值的比的函数来放缩而获得对于其他组的简化模型。
Claims (5)
1.一种用于肩部关节成形术的关节盂部件,该部件包括:
构造为接合与肱骨相关的肱骨部件的支承部分;和
连接到所述的支承部分的柄部分;
其中柄部分模拟了归一化关节盂穹窿形态,并且柄部分由沿所述的柄部分的尺度分开的多个三角形截面限定,其中所述多个三角形截面为相互大体上平行的三角形截面,其中所述多个相互大体上平行的三角形截面包括:
具有宽度和大约是宽度的2.8倍的高度的第一三角形截面;
具有大约是第一三角形截面的宽度的2.2倍的宽度和大约是第一三角形截面的宽度的2倍的高度的第二三角形截面;
具有大约是第一三角形截面的宽度的2.2倍的宽度和大约是第一三角形截面的宽度的1.8倍的高度的第三三角形截面;
具有大约是第一三角形截面的宽度的1.7倍的宽度和大约是第一三角形截面的宽度的2倍的高度的第四三角形截面;
具有大约等于第一三角形截面的宽度的宽度和大约是第一三角形截面的宽度的2.2倍的高度的第五三角形截面。
2.根据权利要求1所述的部件,其中支承部分包括凹入的支承表面。
3.根据权利要求1所述的部件,其中所述的三角形截面大体上等距。
4.根据权利要求1所述的部件,其中:
第一三角形截面包括在笛卡儿坐标(X,Y,Z)中分别在大约(28,8,0)处、大约(0,15,0)处以及大约(28,18,0)处定位的三个顶点,
第二三角形截面包括在笛卡儿坐标(X,Y,Z)中分别在大约(29,1,8)处、大约(9,14,8)处以及大约(28,23,8)处定位的三个顶点,
第三三角形截面包括在笛卡儿坐标(X,Y,Z)中分别在大约(29,0.5,16)处、大约(10.5,11,16)处以及大约(28,23,16)处定位的三个顶点,
第四三角形截面包括在笛卡儿坐标(X,Y,Z)中分别在大约(29,2.5,24)处、大约(8,7,24)处以及大约(28,20,24)处定位的三个顶点,
第五三角形截面包括在笛卡儿坐标(X,Y,Z)中分别在大约(29,3.5,32.5)处、大约(6,0,32.5)处以及大约(28.5,14,32.5)处定位的三个顶点。
5.根据权利要求1所述的部件,其中柄部分是空心的。
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US11/524,335 US7604665B2 (en) | 2006-09-20 | 2006-09-20 | Glenoid component for shoulder arthroplasty |
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- 2007-09-17 ES ES07253676T patent/ES2373748T3/es active Active
- 2007-09-17 EP EP07253676A patent/EP1902689B1/en active Active
- 2007-09-17 DK DK07253676.6T patent/DK1902689T3/da active
- 2007-09-19 AU AU2007216831A patent/AU2007216831B2/en not_active Ceased
- 2007-09-19 JP JP2007242788A patent/JP5165314B2/ja active Active
- 2007-09-20 CN CN2007101527549A patent/CN101156810B/zh active Active
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2009
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2015
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2019
- 2019-01-04 US US16/240,177 patent/US10918442B2/en active Active
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2021
- 2021-01-19 US US17/152,385 patent/US20210196388A1/en active Pending
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Also Published As
Publication number | Publication date |
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DK1902689T3 (da) | 2012-02-13 |
US20150257848A1 (en) | 2015-09-17 |
US20190133691A1 (en) | 2019-05-09 |
ES2373748T3 (es) | 2012-02-08 |
EP1902689B1 (en) | 2011-11-09 |
US7604665B2 (en) | 2009-10-20 |
US10182867B2 (en) | 2019-01-22 |
EP1902689A1 (en) | 2008-03-26 |
US20080140209A1 (en) | 2008-06-12 |
JP5165314B2 (ja) | 2013-03-21 |
US20100016975A1 (en) | 2010-01-21 |
US10918442B2 (en) | 2021-02-16 |
CN101156810A (zh) | 2008-04-09 |
ATE532485T1 (de) | 2011-11-15 |
US20210196388A1 (en) | 2021-07-01 |
AU2007216831A1 (en) | 2008-04-03 |
AU2007216831B2 (en) | 2012-03-29 |
JP2008073526A (ja) | 2008-04-03 |
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