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    Implantable metallic open-celled lattice/polyethylene composite material and devices
    1.
    发明授权
    Implantable metallic open-celled lattice/polyethylene composite material and devices 失效
    可植入金属开孔晶格/聚乙烯复合材料和器件

    公开(公告)号：US6087553A

    公开(公告)日：2000-07-11

    申请号：US968917

    申请日：1997-11-06

    申请人： Robert C. Cohen ,  Makoto Takeuchi

    发明人： Robert C. Cohen ,  Makoto Takeuchi

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/32 ,  A61F2/34 ,  A61F2/36 ,  A61F2/46 ,  A61L27/40 ,  A61F2/28

    CPC分类号： A61F2/34 ,  A61L27/40 ,  A61F2/30767 ,  A61F2/32 ,  A61F2/3662 ,  A61F2002/30004 ,  A61F2002/30199 ,  A61F2002/30685 ,  A61F2002/30894 ,  A61F2002/3092 ,  A61F2002/30957 ,  A61F2002/30971 ,  A61F2002/3412 ,  A61F2002/3443 ,  A61F2002/3448 ,  A61F2002/3456 ,  A61F2002/3611 ,  A61F2002/3625 ,  A61F2002/365 ,  A61F2002/4631 ,  A61F2230/0063 ,  A61F2240/001 ,  A61F2250/0014 ,  A61F2310/00023 ,  A61F2310/00029 ,  A61F2310/00161 ,  A61F2310/00544

    摘要： A method for making a composite material for implantation in the body which is able to act as a matrix for the biological ingrowth of bone and is suitable as a bearing surface. The method consists of compression molding the implant by forming to net shape the first material to its desired end device and inserting it into a mold cavity. Polyethylene in is then placed onto the first material, and the mold is subjected to heat and pressure for specific time durations. The end result is polyethylene which is fully interdigitated into the first material to a desired depth which is controlled by temperature, pressure and time constraints. The present method creates an interface between the first material and the polyethylene which is securely fixed and does not allow micro and macro motion between the two materials. The compression molding process optimizes the mechanical and wear properties of the polyethylene, and enables the new material to provide a smooth and frictionless bearing surface on one side of the composite material. The opposite side of the composite material is porous and thus allows for biological ingrowth of new bone or cement interdigitation. The first material provides structural stability, yet allows flexibility and load transfer to improve biological interface characteristics and a more normal bony remodeling that are lacking in other acetabular cups. An acetabular cup constructed with the composite material is also disclosed.

    摘要翻译： 一种用于制造用于植入体内的复合材料的方法，其能够用作骨的生物向内生长的基质并且适合作为支承表面。 该方法包括通过将第一材料形成网状并将其插入到模具腔中来压缩植入物。 然后将聚乙烯放置在第一材料上，并将模具经受加热和压力达特定的时间。 最终的结果是将由第一种材料完全交叉到达到所需深度的聚乙烯，该深度由温度，压力和时间限制来控制。 本方法在第一材料和聚乙烯之间产生牢固固定的界面，并且不允许两种材料之间的微观和微观运动。 压缩成型工艺优化了聚乙烯的机械和磨损性能，并且使新材料能够在复合材料的一侧上提供光滑且无摩擦的支承表面。 复合材料的相对侧是多孔的，因此允许新骨或水泥交叉生物的生物向内生长。 第一种材料提供结构稳定性，但允许灵活性和负载转移以改善其他髋臼杯中缺乏的生物界面特征和更正常的骨重建。 还公开了由复合材料构成的髋臼杯。

    Bonding of porous materials to other materials utilizing chemical vapor deposition
    2.
    发明授权
    Bonding of porous materials to other materials utilizing chemical vapor deposition 有权
    使用化学气相沉积将多孔材料粘合到其他材料上

    公开(公告)号：US6063442A

    公开(公告)日：2000-05-16

    申请号：US179119

    申请日：1998-10-26

    申请人： Robert C. Cohen ,  Joseph R. Vargas

    发明人： Robert C. Cohen ,  Joseph R. Vargas

    IPC分类号： C23C16/04 ,  C23C16/14 ,  C23C16/44 ,  C23C16/08

    CPC分类号： C23C16/045 ,  C23C16/14 ,  C23C16/4418

    摘要： A process for bonding a porous material having an opened porous cellular structure to a substrate material, the process including the steps of: conditioning the substrate with tantalum in a reactor at 925.degree. C. having a tantalum source pot at 550.degree. C.; affixing the porous material to the conditioned substrate to form an affixed composite structure by clamping the porous material to the conditioned substrate; and, subjecting the composite structure to a chemical vapor deposition process (CVD) which uses tantalum as a source material for a time sufficient to CVD bond the porous material to the conditioned substrate material.

    摘要翻译： 一种将具有打开的多孔多孔结构的多孔材料接合到基底材料的方法，该方法包括以下步骤：在具有钽源罐的550℃的925℃的反应器中用钽调节基底。 将多孔材料固定到经调理的基底上以通过将多孔材料夹持到经调理的基底而形成固定的复合结构; 并且对所述复合结构进行化学气相沉积工艺（CVD），所述化学气相沉积工艺（CVD）使用钽作为源材料足以使所述多孔材料与所述经调节的基底材料进行CVD结合。

    Prosthetic implant procedure and femoral broach therefor
    4.
    发明授权
    Prosthetic implant procedure and femoral broach therefor 失效
    假体植入术和股骨拉刀

    公开(公告)号：US5089004A

    公开(公告)日：1992-02-18

    申请号：US145793

    申请日：1988-01-19

    申请人： Robert G. Averill ,  Robert C. Cohen

    发明人： Robert G. Averill ,  Robert C. Cohen

    IPC分类号： A61B17/00 ,  A61B17/16 ,  A61F2/00 ,  A61F2/36 ,  A61F2/46

    CPC分类号： A61B17/1668 ,  A61B17/1659 ,  A61F2/36 ,  A61B2017/00464 ,  A61F2/367 ,  A61F2/4684 ,  A61F2002/30405 ,  A61F2002/30606 ,  A61F2002/3631 ,  A61F2002/4631 ,  A61F2220/0025

    摘要： A procedure for contouring the wall of a femoral cavity in a femur for the reception of a femoral stem to be seated within the femoral cavity employs a femoral broach which includes cutting teeth aligned along peripherally spaced apart longitudinal rows extending along a portion of the outer surface of the blade of the broach for forming a multiplicity of alternating longitudinally extending generally parallel grooves and ribs in the wall of the cavity, at least some of the grooves being contiguous with harder portions of the bone of the femur while the ribs are comprised of softer portions of the bone so that completion of the contouring will be signalled by bottoming of the blade of the broach upon the harder portions of the bone and upon implant, the femoral stem will be seated upon the harder portions of bone while the softer portions of bone will be compressed between the femoral stem and the harder portions of bone to accomplish fixation by an interference fit. Upon completion of the contouring of the wall of the cavity, and prior to withdrawal of the blade of the femoral broach, the seated blade of the broach serves as a true gauge of the subsequent location of the femoral stem relative to the femur. A vented, interchangeable distal tip on the blade of the broach pilots the broach for precise alignment of the blade during the contouring procedure.

    摘要翻译： 用于在股骨中轮廓化股骨腔壁以用于接收股骨柄以置于股骨腔内的方法采用股骨拉刀，其包括沿着沿着外表面的​​一部分延伸的周向间隔开的纵向排列的切割齿 用于在腔的壁中形成多个交替的纵向延伸的大致平行的凹槽和肋条的拉刀的刀片，所述凹槽中的至少一些与股骨的骨的较硬部分邻接，而肋由较软的 骨骼的一部分，以便完成轮廓将通过将拉刀刀片的底部接触到骨骼的较硬部分并且在植入时被信号通知，股骨柄将被置于骨的较硬部分上，而较软的骨部分 将被压缩在股骨柄和骨骼的较硬部分之间以通过过盈配合来完成固定。 在完成腔的壁的轮廓之后，并且在股骨拉刀的刀片拔出之前，拉刀的座位刀片用作股骨柄相对于股骨的随后位置的真实尺寸。 在拉刀的刀片上通风，可互换的远端尖端引导拉刀，以在轮廓加工过程中精确地对准刀片。

    Modular components for prosthetic implants
    7.
    发明授权
    Modular components for prosthetic implants 失效
    假体植入物的模块化组件

    公开(公告)号：US5397360A

    公开(公告)日：1995-03-14

    申请号：US16868

    申请日：1993-02-11

    申请人： Robert C. Cohen ,  Scott V. Cron

    发明人： Robert C. Cohen ,  Scott V. Cron

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/38 ,  A61F2/28

    CPC分类号： A61F2/389 ,  A61F2002/30332 ,  A61F2002/30405 ,  A61F2002/30434 ,  A61F2002/30484 ,  A61F2002/30596 ,  A61F2002/30604 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2220/0041

    摘要： A modular component for a prosthetic implant includes a first member, in the form of a tibial tray member, and a second member, in the form of a stem member, joined together by the insertion of a tapered post on the stem member into a tapered receptacle in the tibial tray member, the relative tapers and relative dimensions of the post and the receptacle being such that the inner surface of the receptacle is seated against the outer surface of the post at least adjacent one end of the receptacle and the corresponding end of the post, and a stabilizing mechanism urges annular segments of the post, adjacent the other end of the post, toward engagement with the inner surface of the receptacle adjacent the corresponding other end of the receptacle to stabilize the connection between the tibial tray member and the stem member.

    摘要翻译： 用于假体植入物的模块化部件包括胫骨托构件形式的第一构件和杆构件形式的第二构件，所述第二构件通过在杆构件上插入锥形柱而形成锥形 容器在胫骨托盘构件中，柱和插座的相对锥度和相对尺寸使得容器的内表面至少邻近插座的一端抵靠柱的外表面，并且相应的端部 所述柱和稳定机构促使邻近所述柱的另一端的所述柱的环形段与所述容器的相邻的所述另一端的内表面接合，以稳定所述胫骨托构件与所述胫骨托构件之间的连接 茎成员。

    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant
    8.
    发明授权
    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant 失效
    具有轴向肋骨龙骨的假体膝盖胫骨部件和用于实施植入物的装置

    公开(公告)号：US5356414A

    公开(公告)日：1994-10-18

    申请号：US151983

    申请日：1993-11-15

    申请人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    发明人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    IPC分类号： A61B17/16 ,  A61B17/17 ,  A61F2/30 ,  A61F2/38 ,  A61F5/04

    CPC分类号： A61F2/3886 ,  A61B17/1604 ,  A61B17/1764 ,  A61F2/30771

    摘要： A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be directed toward relatively denser portions of the bone of the proximal tibia, and a plurality of ribs extending axially along each flange and spaced laterally from one another along the flange for enhancing the affixation and stability of the tibial component when implanted in the proximal tibia. Apparatus for preparing the proximal tibia for the reception of the tibial component includes a tibial punch and a tower selectively located at the proximal tibia, the tower having an axially extending guide bushing for placement above the proximal tibia and a channel extending laterally into the guide bushing for enabling the tibial punch to be inserted laterally into the guide bushing and then moved axially downwardly into the proximal tibia, while guided by the guide bushing, to establish a cavity in the proximal tibia for reception of the tibial component.

    摘要翻译： 假体膝关节植入物的胫骨部件具有胫骨托，从胫骨托的下方的大体侧向中心位置向下方延伸的柱，以及包括从柱侧向向外延伸并且彼此成角度的凸缘的龙骨，以便 被引导到胫骨近端的骨的相对较致密的部分，以及沿着凸缘轴向延伸并沿着凸缘彼此横向隔开的多个肋，用于当植入胫骨近端时增强胫骨部件的固定和稳定性。 用于准备用于接收胫骨部件的近端胫骨的装置包括胫骨冲头和选择性地位于胫骨近端处的塔架，所述塔架具有用于放置在近端胫骨上方的轴向延伸的引导衬套和横向延伸到引导衬套中的通道 用于使胫骨冲头横向插入导向衬套中，然后在由引导衬套引导的同时沿轴向向下移动到近侧胫骨中，以在近端胫骨中建立用于接收胫骨部件的空腔。