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发明授权
CN101330886B 小面关节假体 失效 - 权利终止 转让

小面关节假体
摘要：
本发明涉及一种用于脊柱的小面关节(12)的假体，该假体包括支承件(23)和导向杆(21)。该支承件(23)包括用于支承在椎骨(1)的关节面(13，14)上的压板(24)和与之位置相反的支承嵌件(27)，该支承嵌件具有用于相邻椎骨(11)的关节面共同作用的关节面。该导向杆(21)借助摆动关节固定在支承件(23)上。这样，支承力始终通过压板(24)传递到椎骨(1)上。因此，导向杆(21)可设计成狭长，从而椎骨(1)上用于容纳导向杆的缝隙(18)同样也可设计成狭长。这实现了不仅保留骨质而且简单可靠的植入。
摘要（英）：

The invention relates to a prosthesis for facet joints (12) of the spinal column, with a bearing piece (23) and a guide rod (21). The bearing piece (23) comprises a pressure plate (24) for bearing on an articular surface (13, 14) of the vertebra (1) and, lying opposite, a bearing insert (27) which has an articular surface for cooperating with an articular surface (13, 14) of an adjacent vertebra (11). The guide rod (21) is secured on the bearing piece (23) by means of a pivot hinge. The bearing forces are thus always transmitted to the vertebra (1) via the pressure plate (24). In this way, the guide rod (21) can be made narrow, such that the slit (18) for receiving the guide rod on the vertebra (1) can also be made narrow. This permits implantation that is simple and reliable and that also saves bone substance.

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