| 摘要 |
<p>A screw implantation sighting device, comprising a sighting device front section (1) and sighting device rear section (2); the rear part of the sighting device front section (1) and the front part of the sighting device rear section (2) are movably connected; The front part and bottom surface of the sighting device front section (1) and the pelvis minor brim (d) fit together. The sighting device front section (1) is provided with a plurality of positioning through-holes; When the front part and bottom surface of the sighting device front section (1) and the pelvis minor brim (d) join, the extension line of the positioning through-holes is located in the posterior wall of the acetabulum (b). An arcuate limit plate (3) is disposed on the sighting device rear section (2); the arcuate limit plate (3) is formed by the rear part of the sighting device rear section (2) bending toward the bottom surface of the sighting device rear section (2); The inner arc of curvature of the arcuate limit plate (3) and the outer rim of the anterior superior iliac spine (c) fit together. The screw implantation sighting device is fixed by multi-point positioning; the device allows for precise positioning, is convenient in operation, has a simple structure, and is low in cost.</p> |
