| 摘要 |
PURPOSE: A bone screw is provided to minimize structural damage when a bond screw is coupled. CONSTITUTION: A bond screw includes a tubular body(1) with a first opened end(2), a second opened end(3), and a central driven shaft(L). A plurality of cutting saw blades(4) is placed in the first opened end. All parts of the bone screw are made of biocompatible metal, biocompatible metal alloy, and biocompatible materials. |
