| 摘要 |
PURPOSE: A bone extension apparatus is provided to improve convenience and simplicity in a case of bone extending by using the bone extension apparatus operated surgically inside of the skin of the long bone. CONSTITUTION: A bone extension apparatus comprises: an upper plate(110) attached to the upper bone; a bottom plate(120) attached to the lower bone; a rail passing through the inner spaces of the upper plate and the lower plate; and a shaft rotating by receiving the rotating torque of a spring joint installed at the upper part of the upper plate. A screw thread geared toward screw threads of the shaft is formed on the inside wall of a shaft inserting hole on the upper plate and the lower plate. The shaft passes through the inner space of the upper plate and the inner space of the lower plate. |
