| 摘要 |
<p>A hard tissue biopsy instrument includes an outer hollow needle (8) attachable to a housing to project from one end thereof and having a sharpened outer tip (32); an inner hollow needle (6) attachable to the housing within the outer hollow needle and having a milling outer tip (34), the inner hollow needle being rotatably and axially movable with respect to the outer hollow needle; and a rotary drive for rotating the inner hollow needle within the outer hollow needle.</p> |
