| 摘要 |
A guided reamer ( 10 ) has a central cannulation ( 12, 12 a) adapted to receive a drill pin ( 14 ) secured in a manner which is axially aligned with the stem ( 22 ) of the bulbus bone joint ( 20 ). The reamer ( 10 )has a profile cutting form ( 24 ) with cutting teeth ( 40 ) formed therein for cutting a form of a defined profile. The reamer ( 10 ) has a circumferential rim ( 34 ) having rim cutting teeth ( 36 ) disposed to cut to an outside of the rim and an inside of the rim, having face cutting teeth ( 37 ) adapted to cut an annular channel into bone and a plurality of planing teeth ( 52 ) radially disposed on an internal surface adjacent an axial end boss ( 44 ). The cannulation ( 12, 12 a) is supported at the apex of the cutting form ( 24 ) and is formed in a guide assembly ( 70, 70 ') affixed to the apex. The guide assembly ( 70, 70 ') is adapted for imparting rotation to the reamer ( 12 ). The reamer ( 10 ) is adapted to be supported by a cannulated reamer handle ( 74 ) having a bayonet locking device ( 76 ) capable of locking the handle ( 74 ) to the guide assembly ( 70, 70 ') of the cannulated reamer ( 10 ) and a corresponding central cannulation ( 86 ), permitting the drill pin ( 14 ) to pass at least part way therethrough.
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