| 摘要 |
An osteosynthetic distraction device is adapted for insertion under the skin of a patient and has first and second relatively moveable distraction elements (10 and 12) which are secured respectively to bone parts B1 and B2 to be distracted. A controllable arrangement is provided for effecting relative movement between the distraction elements (10 and 12) in a distraction direction. The controllable arrangement includes at least one permanent magnet (30) movable under the influence of an externally applied magnetic field. Movement of the magnet (30) causes relative movement between said first and second distraction elements (10 and 12) in said distraction direction. A stop, such as a pawl and ratchet (24, 22), prevents relative movement of said first and second distraction elements (10 and 12) in a direction opposite to said distraction direction. |
