| 摘要 |
A surgical puncture instrument ( 30 ) includes a drill ( 31 ) and a cutter sleeve ( 36 ). The sleeve is shaped to continue the shape of the drill so that the sleeve participates in the drilling operation. This permits the sleeve to enter hard tissue and allows the sleeve to be used for access to inner tissue to, for example, obtain a biopsy with a biopsy needle ( 13 ).
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