| 摘要 |
<p>A bone fixing device is provided for fixing a plurality of bone fragments together. The device (2) comprises an elongate rod (4) which has a screw thread (6) formed along a first length (10) and, a cylindrical tube (8) which is threadingly engageable with the screw thread (6) on the rod (4). To use the device (2), a hole is formed to pass through bone fragment (34) and to penetrate bone fragment (36). The hole through bone fragment (34) has a diameter equal or greater than that of the threaded portion (10) of rod (4). A thread is formed in the hole in bone fragment (36) to engage thread (6). The rod (4) is inserted through bone fragment (34) and threadingly engages bone fragment (36). The tube (8) is threadingly engaged with the rod (4) and screwed to a position where a leading end (20) of the tube (8) can apply a force tending to compress bone fragments (34, 36) together. Excess length of the rod (4) and tube (8) can be cut off near a layer of skin (40) which overlies the bone fragments (34, 36). Cutting of the tube (8) and rod (4) effectively locks the tube (8) from unscrewing in reaction to the compressive force.</p> |
