| 主权项 |
1. An intervertebral disk implant comprising:
(A) a biconvex cage, the cage comprising:
a first pair of opposing sidewalls, wherein the first pair of sidewalls includes a middle portion that is substantially expanded, and wherein the first pair of sidewalls terminates in a flared anterior end; andan upper sidewall and a lower sidewall, wherein each of the upper sidewall, the lower sidewall and the first pair of sidewalls comprises an opening therewith to define an internal fenestrated channel; (B) an upper and a lower anchor plate positioned along a posterior end of the cage, wherein the anchor plates are slidable for stabilizing the cage in an intervertebral disk space between a pair of adjacent vertebrae; and (C) a self-locking screw dimensioned to be inserted within a cavity defined by a corresponding notch in each of the upper and lower anchor plates,
wherein upon turning the self-locking screw within the cavity, the upper and the lower anchor plates are distracted upwards and downwards respectively,wherein the upper and lower anchor plates slide within a posteriorly open notch formed by the cage, andwherein the implant further comprises an upper and a lower fixed pin located at the posterior end of the cage, and wherein the upper and lower fixed pins are positioned substantially adjacent the upper and lower anchor plates respectively. |
