| 摘要 |
An intramedullary rod or nail for aligning a fractured long bone has a rod (100) that is inserted into the bone, with two longitudinal slots (120) into which cutting splines (200) are slid. The splines have cutting teeth (250) for cutting grooves into the bone as the splines slide along the slot. The cutting edges are substantially transverse to the length of the splines and rod. The tooth top surfaces (252) are disposed at gradually increasing radial heights. Recesses (251) between the cutting teeth store bone shavings to prevent jamming. The bone segments are held against bending, rotation, and lateral displacement because the splines are firmly engaged in the grooves they have cut. A blank spline without teeth may replace the cutting spline. |
