公开(公告)号：US5108434A

公开(公告)日：1992-04-28

申请号：US423150

申请日：1989-10-19

申请人： Uwe Ahrens ,  Curt Kranz ,  Olaf Neubert ,  Paul Gotsche ,  Wiebke Ploetz

发明人： Uwe Ahrens ,  Curt Kranz ,  Olaf Neubert ,  Paul Gotsche ,  Wiebke Ploetz

IPC分类号： A61F2/28 ,  A61F2/30 ,  A61F2/36

CPC分类号： A61F2/3662 ,  A61F2/30771 ,  A61F2/3094 ,  A61F2002/30125 ,  A61F2002/30171 ,  A61F2002/3082 ,  A61F2002/365 ,  A61F2230/0008 ,  A61F2230/005

摘要： A prosthesis includes an elongated shaft terminating in a proximal end and a distal end. The shaft has a center axis and an outer surface provided with grooves having side walls forming an essentially wedge-shaped cross section terminating in a bottom edge line. The grooves extend substantially longitudinally on the outer surface from the proximal end to the distal end in a substantially uniform density. The bottom edge lines are oriented toward the center axis, whereby a separate imaginary plane longitudinally dividing each groove contains both the center axis and the respective bottom edge line. The number of grooves in an imaginary angular sector, having a vertex line coinciding with the center axis, increases with increasing distance of the outer surface from the center axis. The proximal end has an enlarged surface region and the grooves extend from the distal end upward toward the enlarged surface region. In the enlarged surface region at least some of the grooves form branches to retain a substantially uniform groove density throughout the enlarged surface region.

摘要翻译： 假体包括终端于近端和远端的细长轴。 轴具有中心轴线和外表面，该外表面具有凹槽，该凹槽具有终止于底部边缘线的基本楔形截面的侧壁。 凹槽在外表面上以基本均匀的密度从近端到远端基本纵向地延伸。 底部边缘线朝向中心轴线定向，由此纵向划分每个凹槽的单独假想平面包含中心轴线和相应的底部边缘线。 具有与中心轴重合的顶点线的虚拟角扇区中的凹槽的数量随着外表面与中心轴线的距离的增加而增加。 近端具有扩大的表面区域，并且凹槽从远端向上延伸到扩大的表面区域。 在扩大的表面区域中，至少一些凹槽形成分支以在整个扩大的表面区域中保持基本均匀的凹槽密度。