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Posterior lumbar interbody fusion expandable cage with lordosis and method of deploying the same
Posterior lumbar interbody fusion expandable cage with lordosis and method of deploying the same
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机译:具有腰椎前凸的后腰椎椎间融合器扩张笼及其部署方法
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摘要
A spinal fusion cage comprises an upper half-cage, a lower half-cage, and a plunger with a cam. The upper half-cage and lower half-cage have a first collapsed configuration which has a thin, flat, rectangular envelope and a second expanded configuration. The half-cages have at least one ramped surface on which the cam of the plunger rides. The cam bears against the ramped surface and spreading the two half-cages apart. A method of deploying a spinal fusion cage comprises the steps of disposing in a spinal space an upper half-cage and lower half-cage in a first collapsed configuration which has a thin, flat, rectangular envelope and a second expanded configuration. The method continues with the step of distally advancing a plunger between the upper half-cage and lower half-cage and spreading the two half-cages apart.
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