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    • 13. 发明授权
    • Acetabular cup prosthesis
    • 乙醇杯预防
    • US3840904A
    • 1974-10-15
    • US35587573
    • 1973-04-30
    • TRONZO R
    • TRONZO R
    • A61B17/86A61F2/00A61F2/30A61F2/34A61F2/46A61F1/24
    • A61F2/34A61B17/86A61F2/30767A61F2002/30176A61F2002/30405A61F2002/30797A61F2002/30841A61F2002/30846A61F2002/30848A61F2002/30892A61F2002/3412A61F2002/3422A61F2002/3427A61F2002/3429A61F2002/3451A61F2002/4619A61F2220/0025A61F2230/0054A61F2310/00011
    • An acetabular cup prosthesis which has facilities for ready removal. In one form it has grooves to guide a surgical saw on the inside, preferably to cut the prosthesis in quadrants for removal, and also having threaded sockets to insert a tool to remove the quadrants. Additionally or alternatively, it has protrusions from its rear not adapted to offer much resistance in case of removal. In the preferred form two blades protrude from the rear and are offset, so that they come to a point and also form a knife edge at the side. Outrigger blades are provided extending perpendicular to the diameter and terminating at a less height than the radius. In the preferred form the rear of the prosthesis has a porous coating and also the blades have a porous coating. In alternate forms, spikes extend from the rear of the prosthesis offset and in parallel relation, either from one side in a cluster or from one side distributed over that side. In another form there is a screw which extends from the rear end offset to the axis of symmetry. In another form there are blades which lie along the rear, for example parallel to one another and parallel to the diameter or at right angles to the diameter.
    • 髋臼杯假体,具有便于移除的设施。 在一种形式中,它具有用于引导内侧的外科手术锯的凹槽,优选地将假体切割成象限以便移除,并且还具有用于插入工具以移除象限的螺纹插槽。 附加地或替代地,其具有从其后部的突出部不适于在移除的情况下提供很大的阻力。 在优选形式中,两个叶片从后部突出并且被偏移,使得它们到达一点并且还在侧面形成刀刃。 外伸支架刀片设置成垂直于直径延伸,并以比半径更小的高度终止。 在优选形式中,假体的后部具有多孔涂层,并且刀片具有多孔涂层。 在替代形式中,尖峰从假体偏移的后部延伸并且平行关系,从簇的一侧或从该侧分布的一侧开始。 在另一种形式中,存在从后端偏移延伸到对称轴的螺钉。