| 摘要 |
The acetabular cup bur comprises four blades ( 1, 2, 3, 4 ) which are preferably stamped out of non-hard metal sheets, e.g. stainless steel. The blades have slits ( 6, 7, 8, 9, 10 ) which enable them to be inserted into each other in order to obtain a bur head. The slits have different widths, enabling more than two of them to be assembled on the axis of rotation. Each blade is extended by a lower part ( 19 ). Said lower parts are driven by a flat ring ( 15 ) which keeps them rigid. The blades are stamped. The cutting wire ( 18 ) of the blade is obtained by the same stamping operation due to an appropriate form of the stamps. |
