| 摘要 |
A surgical instrument for revising/removing an artificial disc or removing/replacing a core of an artificial disc includes a pair of tips, each tip having a pair of tines and a stop defining a proximal end of each tine. The stop of at least one tip is abutted against an interior surface of an implanted endplate of an artificial disc, whereby tines of the tip can support the artificial disc. The tip is separated from another, opposing tip, whereby opposing implanted endplates, each of which is supported by pairs of tines of a tip, are separated, thereby distracting vertebrae between which the endplates are implanted. Upon distracting the disc space, the core can be revised or removed from between the endplates of the artificial disc. Following core removal, the endplates of the artificial disc are revised (repositioned), removed or replaced.
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