| 摘要 |
A kit (100) is for removing a spacer (12) having a surface (22) and ends (24, 26) from a spine (14). The kit (100) includes an osteotome (10), a threaded extractor (54), and a trephine (70), each for releasing spacer (12) from spine (14). Osteotome (10) includes a cutting portion (46) having a surface (48) formed to engage surface (22) of spacer (12) and a tip (52) formed to cut bone surrounding surface (22) of spacer (12). Extractor (54) includes a side wall (64) having threads (66) formed to cut one of the ends (24, 26) of spacer (12) and pull spacer (12) away from spine (14) when side wall (64) rotates relative to spacer (12). Trephine (74) includes a blade (74) having a sleeve (76) defining a passageway (80) and including an edge (64) formed to cut material surrounding surface (22) of spacer (12). |
