| 摘要 |
<p>The present invention relates to a surgical instrument for avasclar necrosis of femoral head capable of improving the adaptability of a patient after surgical operation by carrying out the implant without exhausting a hip joint bone of a patient. The surgical instrument according to the present invention comprises a center pin comprising a needle structure having a predetermined diameter and length, pressurized and provided at necrotic lesions of the femoral head; a core decompressor wherein a center portion is guided by the center pin, one end is mounted on a drill handpiece and the other end has a cylindrical saw shape, for sawing from the surface of femur to the necrotic lesions of the femoral head at a predetermined distance; a harvester which is put into the femur along the perforation formed by the saw and winds the sawn end of the femur to extract the same; and a compression tool for pressurizing the femur cell extracted from the harvester so as to expand a diameter, thereby re-putting the femur cell into the perforated position to induce self-bonding. Therefore, the present invention improves the adaptability of a patient during implant by using a hip joint bone of a patient and reduces surgical operation time by not implanting a hip joint bone of other people.</p> |
