| 摘要 |
<p>A device to assist with the placement of screws in bone tissue, characterised in that said device includes an elongate hollow body comprising: a proximal portion enabling the attachment thereof to any rotating device, a distal portion provided with a milling cutter for making the recess for receiving the screw heads, a central portion provided with a longitudinal window with grading and, a drill spindle with a diameter enabling the axial sliding thereof into the bore of the hollow body and comprising, in the intermediate portion thereof, a marking means suitable for being positioned opposite the window of said body. The proximal portion of the body being arranged to enable either simultaneous rotation of the body and the spindle housed in the latter, or rotation of only the body.</p> |
