Frank Spratt,Henri Défossez,Duncan Colin Betts,Robert Hart
申请号：
US12606676
公开号：
US08613746B2
申请日:
2009.10.27
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A reamer for preparing a spinal upper facet to facilitate insertion of combined screw/washer implant, preventing bone damage and facet weakening, and also allowing possibility to place grafting so as to maximize implant stabilization. The reamer has shallow outer cutting surfaces to cut a groove for spike insertion deep inner cutting surfaces to cut a cortical-penetrating bore for insertion of the screw, and a flat therebetween to limit penetration of these cutting surfaces.
