| 主权项 |
1. An extendable spinal implant comprising:
a) a cage comprising four load-bearing sides creating a trapezoidal channel traversing a length of said cage, wherein an outward load bearing side is wider than an inward load bearing side and each of said four load-bearing sides includes openings therein for allowing passage of osteogenic substances into a surgically created cavity, wherein one of said four load bearing sides comprises a border lateral said trapezoidal channel and contacting said inward load-bearing side and said outward load-bearing side; said border surrounding one of said openings and comprising: i) a catch proximate a first lengthwise end of said cage; ii) a slit in a second lengthwise end of said cage opposite said catch and having a common longitudinal axis with said catch and said one of said openings; and iii) at least one aperture positioned on each lateral side of said border, on either side of said one of said openings and adapted for receiving one or more fasteners; b) a first plurality of spikes extending longitudinally from said first lengthwise end; and c) an extendable member comprising:
i) a margin comprising a trapezoidal orifice and a plurality of points extending from said margin in directions analogous to or parallel with said spikes;ii) a first slide extending from said margin engaging an inner side of said inward load-bearing side;iii) a second slide extending from said margin engaging an inner side of said outward load-bearing side, wherein widths of said slides are adequate for engagement by said one or more fasteners;iv) a first edge comprising a notch lateral said trapezoidal channel and proximate said margin; andv) a second edge, opposite said first edge, connected with said first and second slides, wherein said slides and said second edge further comprise ties. |
