| abstract |
Elastic element (200) intended to be used in a stabilization system (130) for bones or vertebrae, shaped as an essentially cylindrical tube-shaped body with a spiral notch (202) made in its wall, along its axis main end (1) with a first end and a second opposite end and with a coaxial bore (201) extending from the first end to the second end, the notch (202) opening in a radial direction into the bore (201) of the body, comprising said body at one of its opposite ends, either an internal thread (4, 4 ', 41, 163) or a cylindrical projection with an external thread 8161, 171, 172) for its connection with a stem and / or the head of a screw for bones or for the connection with a segment of a bar or a plate, characterized in that the elastic element has two zones (61) concave and displaced from each other by 180ยบ, and concave with a concavity directed towards the central axis. |