Elastic bone screw
A bone screw and elastic technology, applied in the field of bone screws, can solve problems such as reduced friction, difficulty in forming a dynamic elastic structure, deformation or fracture of steel plates, etc., and achieves the effects of increased welding reliability, increased torsional force, and less breakage
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Embodiment 1
[0034] refer to Figure 1-8 , an elastic bone screw, comprising an elastic rod 1 and a limiting sleeve 2; a part of the elastic rod 1 is inserted into the limiting sleeve 2 along the axial direction of the limiting sleeve 2; one end of the elastic rod 1 It is fixedly connected with the slot 21 in the limiting sleeve 2, and the other end is provided with a locking joint 11, and the end surface of the locking joint 11 along the axial direction is provided with a screw groove 12; the outer periphery of the limiting sleeve 2 is provided with There are 23 threads. The rotation of the elastic rod 1 drives the limit sleeve 2 to rotate, so that the thread 23 on the outer periphery of the limit sleeve 2 is fixed and locked with the fracture.
[0035] In the part where the elastic rod 1 is inserted into the limit sleeve 2, there is a limit gap 22 between the other positions and the inner wall of the limit sleeve 2 except the position fixedly connected with the limit sleeve 2; During h...
Embodiment 2
[0044] refer to Figure 9 The difference between this embodiment and embodiment 1 is that the cross section of the part where the elastic rod 1 is fixedly connected with the limiting sleeve 2 is triangular.
Embodiment 3
[0046] refer to Figure 10 The difference between Example 1 and Example 1 is that the cross-section of the part where the elastic rod 1 is fixedly connected with the limit sleeve 2 is quincunx-shaped.
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