公开(公告)号：EP1000691A3

公开(公告)日：2002-07-03

申请号：EP99309062.0

申请日：1999-11-15

申请人： Johnson & Johnson Professional, Inc.

发明人： Corbin, Dexter ,  Ostiguy, Pierre S.

IPC分类号： A61F2/30 ,  B23B27/20

CPC分类号： A61F2/30767 ,  A61F2/3094 ,  A61F2/34 ,  A61F2/389 ,  A61F2002/30838 ,  A61F2002/30934 ,  B23B27/20 ,  Y10T29/49 ,  Y10T82/10 ,  Y10T82/2502

摘要： A method for preparing a contact surface of an implantable bone, joint or similar prosthetic component subject to contact or motion includes the steps (10,12,14) of mounting the prosthetic component (16,16') on a turning or cutting machine (24) and cutting the face of the prosthetic component (16,16') with a diamond cutting tool (36B) using computerized control of tool position along a cross direction to machine cut a super finished surface. The diamond cutting tool (36B) has a precise contact point and is shaped with a waviness under about 0.5 micrometers effective to cut a surface profile free of visible tool marks. As cut, the variations of contour (42) and the surface roughness are both under about 0.5 micrometers, and preferably under about 0.2 micrometers or less. Upon implantation, the super finished surface generates wear particles at an asymptotically low or residual level during wear-in which may enhance wear characteristics and reduce local reaction or systemic rejection effects. The component (16,16') is preferably formed by a strong hard polymer, such as UHMWPE, and may be a cup (16'), liner, stem, head, tray (16), insert shell or other wear surface element of an implantable joint assembly.

公开(公告)号：EP1000691A2

公开(公告)日：2000-05-17

申请号：EP99309062.0

申请日：1999-11-15

申请人： Johnson & Johnson Professional, Inc.

发明人： Corbin, Dexter ,  Ostiguy, Pierre S.

IPC分类号： B23B1/00 ,  B23B27/20 ,  A61F2/30

CPC分类号： A61F2/30767 ,  A61F2/3094 ,  A61F2/34 ,  A61F2/389 ,  A61F2002/30838 ,  A61F2002/30934 ,  B23B27/20 ,  Y10T29/49 ,  Y10T82/10 ,  Y10T82/2502

摘要： A method for preparing a contact surface of an implantable bone, joint or similar prosthetic component subject to contact or motion includes the steps of mounting the prosthetic component on a turning or cutting machine and cutting the face of the prosthetic component with a diamond cutting tool using computerized control of tool position along a cross direction to machine cut a super finished surface. The diamond cutting tool has a precise contact point and is shaped with a waviness under about 0.5 micrometers effective to cut a surface profile free of visible tool marks. As cut, the variations of contour and the surface roughness are both under about 0.5 micrometers, and preferably under about 0.2 micrometers or less. Upon implantation, the super finished surface generates wear particles at an asymptotically low or residual level during wear-in which may enhance wear characteristics and reduce local reaction or systemic rejection effects. The component is preferably formed by a strong hard polymer, such as UHMWPE, and may be a cup, liner, stem, head, tray, insert shell or other wear surface element of an implantable joint assembly.

摘要翻译： 用于制备可接触或运动的可植入骨骼，关节或类似假肢部件的接触表面的方法包括以下步骤：将假体部件安装在转动或切割机器上，并用金刚石切割工具切割假体部件的表面，所述金刚石切割工具使用 计算机控制刀具位置沿横向方向切割超级精加工面。 金刚石切割工具具有精确的接触点，并且具有在约0.5微米以下的波纹形状，有效地切割没有可视工具标记的表面轮廓。 切割时，轮廓和表面粗糙度的变化均在约0.5微米以下，优选在约0.2微米以下。 在植入后，超级成品表面在磨损期间以渐近低或残余水平产生磨损颗粒，这可以增强磨损特性并减少局部反应或系统排斥效应。 组分优选由强硬聚合物如UHMWPE形成，并且可以是可植入接头组件的杯，衬套，杆，头，托盘，插入壳或其它磨损表面元件。