| 摘要 |
<p>A self-compressing osteosynthesis screw, embodied in the form of a longitudinal body with axis A comprising, between the free distal and proximal ends of same: -a distal thread (1) with pitch (P1), the root (14) of the distal thread (1) defining a cone-shaped body, -a head thread (2) with pitch (P2) less than the pitch (P1) of the distal thread, -an intermediate smooth portion (3) connecting the distal thread (1) to the head thread (2), -a longitudinal through-hole, The root (24) of the head thread and the crest (23) of the head thread each defining, from the free distal end towards the free proximal end of the screw, a bulging body that is extended by a body cylindrical in shape, said bulging bodies, one of which is defined by the crest (23) of the head thread, the other by the root (24) of the head thread, having respectively a distance between the crest (23) and axis A of the screw, and a distance between the root (24) and axis A, which increase when axis A is followed moving towards the proximal free end.</p> |
