| 摘要 |
<p>1,153,090. Splicing fractured bones. SYNTHES A.G. 20 June, 1967 [22 June, 1966], No. 28294/67. Heading A5R. [Also in Division B3] A plate 1 to be screwed across a fracture in a bone 7 and arranged to press together the bone parts is provided in combination with bone-fixing screws, the plate being formed with at least one slot 5 which is countersunk to receive a screw 8 and which is formed with a ramped' portion 3a at one end of the slot so that the driving of the screw moves the plate relative to the 'bone part. As shown, the screw 8 has a hemi-spherical head and the slot, which is formed using milling tools (Figures 1, 3, 7 and 8 not shown), has a part-spherical abutment surface (3b) at one end and the part-cylindrical ramped portion 3a at the other. The plate may be provided with six bone-fixing screws (Figure 6 not, shown) and the length of each slot allows the, screws to be tightened one after the other. An embodiment, Figures 9, 10. (not shown), comprises a plate with. slots suitable for use with part-conicaMieaded screws.</p> |
