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公开(公告)号：US20060052875A1
公开(公告)日：2006-03-09
申请号：US11223376
申请日：2005-09-08
IPC分类号： A61F2/38
CPC分类号： A61F2/38 , A61F2/30767 , A61F2/3868 , A61F2/389 , A61F2002/3092 , A61F2002/3895 , A61F2310/00179 , A61F2310/00203 , A61F2310/00239 , A61F2310/00317
摘要： An improved knee prosthesis includes a ceramic tibial component for articulation with natural or prosthetic (re-surfaced) femoral surfaces. The ceramic tibial component is provided in the form of a ceramic monoblock adapted for fixation relative to the patient's tibial bone, or alternately in the form of a ceramic bearing insert component carried by a tibial baseplate member which is adapted in turn for fixation relative to tibial bone. In either form, the ceramic tibial component includes at least one upwardly concave articulation surface for movable bearing engagement by a generally convex or condylar shaped femoral articulation surface. The ceramic tibial component provides improved wear characteristics with extended service life.
摘要翻译： 改进的膝关节假体包括陶瓷胫骨部件，用于与天然或假体（再次表面的）股骨表面铰接。 陶瓷胫骨部件以适于相对于患者的胫骨固定的陶瓷整体形式提供，或者以由胫骨基板部件承载的陶瓷轴承插入部件的形式提供，其依次适于相对于胫骨固定 骨。 在任一种形式中，陶瓷胫骨部件包括至少一个向上凹的关节表面，用于通过大致凸形或髁形的股骨关节表面可移动的轴承接合。 陶瓷胫骨部件提供改善的磨损特性，延长使用寿命。
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公开(公告)号：US20050107888A1
公开(公告)日：2005-05-19
申请号：US11020424
申请日：2004-12-21
CPC分类号： A61L27/045 , A61F2/32 , A61F2/34 , A61F2002/3611 , A61F2310/00317 , A61L27/10 , A61L27/42 , A61L27/427 , A61L2430/24
摘要： A ceramic-metal composite articulation is provided with substantial elimination of wear debris, wherein a ceramic material is provided with superior mechanical properties tailored for articulating with ceramic articulations having high flexural strength (greater than about 700 MPa), high fracture toughness (greater than about 7 MPam1/2) and a high Weibull modulus (greater than about 20), in comparison with presently available bio-ceramics such as alumina or zirconia. The mechanical property enhancement enables ceramic materials with greater reliability and significantly reduced in-vivo fracture risk to be obtained. Preliminary in-vitro wear performance, to several million cycles using established test protocols, of head/cup components in a prosthetic hip joint made from these ceramics also demonstrates the ultra low wear characteristics. These material properties substantially eliminate polyethylene (PE) wear debris mediated implant failures by offering an optimal combination of bio-mechanical safety and reliability with ultra low wear performance.
摘要翻译： 陶瓷 - 金属复合铰链提供了大量消除磨损碎屑，其中陶瓷材料具有优良的机械性能，适合于与具有高弯曲强度（大于约700MPa），高断裂韧性（大于约700MPa） 与目前可获得的生物陶瓷如氧化铝或氧化锆相比，具有较高的威布尔模量（大于约20）。 机械性能的提高使陶瓷材料具有更高的可靠性和显着降低的体内断裂风险。 由这些陶瓷制成的假体髋关节中的头部/杯部件的初步体外磨损性能，使用已建立的测试方案达数百万次循环，也表现出超低磨损特性。 通过提供生物机械安全性和可靠性与超低磨损性能的最佳组合，这些材料性质基本上消除了聚乙烯（PE）磨损碎片介导的植入物失效。
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公开(公告)号：US20050090903A1
公开(公告)日：2005-04-28
申请号：US10987415
申请日：2004-11-12
CPC分类号： A61L27/045 , A61F2/32 , A61F2/34 , A61F2002/3611 , A61F2310/00317 , A61L27/10 , A61L27/42 , A61L27/427 , A61L2430/24
摘要： A ceramic-metal composite articulation is provided with substantial elimination of wear debris, wherein a ceramic material is provided with superior mechanical properties tailored for articulating with ceramic articulations having high flexural strength (greater than about 700 MPa), high fracture toughness (greater than about 7 MPam1/2) and a high Weibull modulus (greater than about 20), in comparison with presently available bio-ceramics such as alumina or zirconia. The mechanical property enhancement enables ceramic materials with greater reliability and significantly reduced in-vivo fracture risk to be obtained. Preliminary in-vitro wear performance, to several million cycles using established test protocols, of head/cup components in a prosthetic hip joint made from these ceramics also demonstrates the ultra low wear characteristics. These material properties substantially eliminate PE wear debris mediated implant failures by offering an optimal combination of bio-mechanical safety and reliability with ultra low wear performance.
摘要翻译： 陶瓷 - 金属复合铰链提供了大量消除磨损碎屑，其中陶瓷材料具有优良的机械性能，适合于与具有高弯曲强度（大于约700MPa），高断裂韧性（大于约700MPa） 与目前可获得的生物陶瓷如氧化铝或氧化锆相比，具有较高的威布尔模量（大于约20）。 机械性能的提高使陶瓷材料具有更高的可靠性和显着降低的体内断裂风险。 由这些陶瓷制成的假体髋关节中的头部/杯部件的初步体外磨损性能，使用已建立的测试方案达数百万次循环，也表现出超低磨损特性。 通过提供生物机械安全性和可靠性与超低磨损性能的最佳组合，这些材料性质基本上消除了PE磨损碎片介导的植入物失效。
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公开(公告)号：US20050273176A1
公开(公告)日：2005-12-08
申请号：US11203047
申请日：2005-08-12
CPC分类号： A61F2/32 , A61F2/30767 , A61F2/34 , A61F2/36 , A61F2/3662 , A61F2002/30011 , A61F2002/30324 , A61F2002/30332 , A61F2002/30685 , A61F2002/30934 , A61F2002/349 , A61F2002/3611 , A61F2002/3625 , A61F2002/365 , A61F2220/0033 , A61F2250/0023 , A61F2250/0036 , A61F2310/00011 , A61F2310/00029 , A61F2310/00179 , A61F2310/00203 , A61F2310/00239 , A61F2310/00317 , A61L27/10
摘要： An improved hip prosthesis includes an acetabular cup bearing component constructed from a relatively hard and high strength ceramic material for articulation with a ball-shaped femoral head component which may be constructed from a compatible ceramic or metal material. In one form, the acetabular cup further includes a ceramic porous bone ingrowth surface adhered thereto for secure ingrowth attachment to natural patient bone.
摘要翻译： 改进的髋关节假体包括由相对较硬和高强度的陶瓷材料构成的髋臼杯支承部件，用于与可相容的陶瓷或金属材料构成的球形股骨头部件铰接。 在一种形式中，髋臼杯还包括粘附到其上的陶瓷多孔骨向内生长表面，用于固定地向内植入天然患者骨。
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公开(公告)号：US5972032A
公开(公告)日：1999-10-26
申请号：US985637
申请日：1997-12-05
申请人： Jorge Lopez , Aaron Hofmann
发明人： Jorge Lopez , Aaron Hofmann
CPC分类号： A61F2/34 , A61F2/30767 , A61F2/4609 , A61F2002/30382 , A61F2002/30805 , A61F2002/30841 , A61F2002/30848 , A61F2002/30892 , A61F2002/30968 , A61F2002/3404 , A61F2002/3412 , A61F2002/3451 , A61F2002/3461 , A61F2002/4631 , A61F2220/0033 , A61F2310/00407
摘要： An acetabular component for an implantable hip joint prosthesis. An acetabular shell has an apex and a rim, and has a convex proximal surface for being received within a hemispherically reamed acetabulum in a press-fit relationship. The convex proximal surface is shaped as a surface of revolution defined by a curve segment rotated about an axis, where the curve segment and the axis lie in a common plane. The defining curve segment includes a first arc-segment and a second arc-segment. The first arc-segment has a center located on the axis, and the second arc-segment has a center offset from the axis. The convex proximal surface includes a first region defined by the first arc-segment in proximity to the apex and a second region defined by the second arc-segment in proximity to the rim. The convex proximal surface is diametrically oversized in the second region relative to the hemispherically reamed acetabulum. At least one bone-penetrating protrusion extends generally proximally from the convex proximal surface, but is limited in proximal extent to remain unengaged with the hemispherically reamed acetabulum at initial contact of the oversized second region with the hemispherically reamed acetabulum during implantation.
摘要翻译： 用于植入式髋关节假体的髋臼部件。 髋臼壳具有顶点和边缘，并且具有凸起的近侧表面，用于以压合关系接收在半球形铰孔臼形体内。 凸形近端表面被定形为由围绕轴线旋转的曲线段限定的旋转表面，其中曲线段和轴线位于公共平面中。 定义曲线段包括第一弧段和第二弧段。 第一弧段具有位于轴上的中心，第二弧段具有与轴的中心偏移。 凸近端表面包括由第一弧形段限定在靠近顶点的第一区域和由靠近边缘的第二弧形段限定的第二区域。 凸起的近端表面在第二区域中相对于半球形扩孔的髋臼径向超大。 至少一个骨穿透突起从凸近端表面大致向近侧延伸，但是在近端程度上受到限制，以在植入期间在超大尺寸的第二区域与半球形扩孔的髋臼的初始接触期间保持与半球形扩孔的髋臼未接合。
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公开(公告)号：US20080058947A1
公开(公告)日：2008-03-06
申请号：US11780248
申请日：2007-07-19
申请人： Brian Earl , Abraham Habegger , Aaron Hofmann , Kim Bertin , Lawrence Dorr , Robert Booth , Aaron Rosenberg , Sergio Romagnoli
发明人： Brian Earl , Abraham Habegger , Aaron Hofmann , Kim Bertin , Lawrence Dorr , Robert Booth , Aaron Rosenberg , Sergio Romagnoli
IPC分类号： A61F2/38
CPC分类号： A61F2/3859 , A61F2/3094 , A61F2002/30616
摘要： A set of distal femoral knee prostheses which are designed to be more narrow in medial/lateral dimensions with increasing anterior/posterior size than existing prostheses to more closely correspond to the physical anatomy of female patients. The prostheses are designed to have a substantially trapezoidal shape or profile when viewed distally which features a more pronounced narrowing of the medial/lateral dimensions beginning at the posterior end of the prostheses and progressing anteriorly to the anterior end of the prostheses. Additionally, the prostheses each include a reduced profile patellar sulcus and reduced profile anterior condyles to more closely conform to the anatomy of a resected femur, and also include sulcus tracking optimized to conform to female anatomy.
摘要翻译： 一组远端股骨膝关节假体被设计为内侧/外侧尺寸更窄，前后尺寸比现有假体增加，以更接近于女性患者的身体解剖结构。 假肢被设计成当远端观察时具有基本上梯形的形状或轮廓，其特征在于在假体的后端开始并在假体的前端前进的内侧/外侧尺寸更明显变窄。 此外，假体各自包括减小的轮廓髌骨沟和减小的轮廓前髁，以更紧密地与切除的股骨的解剖结构一致，并且还包括优化以符合女性解剖结构的沟槽跟踪。
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公开(公告)号：US6074424A
公开(公告)日：2000-06-13
申请号：US12532
申请日：1998-01-23
CPC分类号： A61F2/3859 , A61F2002/30736
摘要： An implantable orthopedic knee joint prosthesis includes a femoral component having an internal box geometry defined by a bone-engaging surface configured as a primary prosthesis. The femoral component has a threaded bore therein communicating with the bone-engaging surface. An adapter has a mating surface complementary to the box geometry of the femoral component and an internal box geometry defined by a bone-engaging surface configured as a revision prosthesis. A hole through the adapter is aligned with the threaded bore of the femoral component and has a recessed shoulder. An adapter screw has a head and a threaded shank, the head sized to be received within the hole of the adapter in engagement with the shoulder, and the shank being sized to be threadedly received within the threaded bore of the femoral component. The adapter screw includes a threaded bore therein. A spacer has a mating surface complementary to the box geometry of the adapter and an internal box geometry defined by a bone-engaging surface configured as a revision prosthesis. The spacer has a hole therethrough aligned with the threaded bore of the adapter screw. A spacer screw has a head and a threaded shank, the shank being sized to be threadedly received within the threaded bore of the adapter screw.
摘要翻译： 可植入矫形膝关节假体包括股骨部件，其具有由构成为主假体的骨接合表面限定的内部箱体几何形状。 股骨部件具有与骨接合表面连通的螺纹孔。 适配器具有与股骨部件的箱体几何形状互补的配合表面和由构造为修正假体的骨接合表面限定的内部箱体几何形状。 通过适配器的孔与股骨部件的螺纹孔对齐并且具有凹入的肩部。 适配器螺钉具有头部和螺纹柄部，所述头部的尺寸被设计成被容纳在与所述肩部接合的所述适配器的孔内，并且所述柄的尺寸设计成螺纹地容纳在所述股骨部件的螺纹孔内。 转接螺钉在其中包括螺纹孔。 间隔件具有与适配器的箱形几何互补的配合表面和由构造为修正假体的骨接合表面限定的内部箱体几何形状。 间隔件具有穿过与适配螺钉的螺纹孔对准的孔。 间隔螺钉具有头部和螺纹柄部，柄部的尺寸设计成螺纹地容纳在适配器螺钉的螺纹孔内。
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