One-way automatic stretching pedicle screw and application thereof
A pedicle screw, automatic technology, applied in the direction of internal fixator, internal bone synthesis, fixer, etc., can solve the problem of large range of motion
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[0026] attached figure 1 It is a three-dimensional schematic diagram of the present invention. The present invention is a new type of pedicle screw, which is different from the previous uniaxial pedicle screw and universal pedicle screw, and it allows movement in a single plane. figure 1 After the nail body is implanted, the nail head can achieve a certain degree of mobility relative to the midline.
[0027] attached figure 2 It is a system assembly drawing of the present invention. attached image 3 , 4 , 5 are the schematic diagrams of the three components of the present invention respectively. The present invention consists of a nail cap 1, a compression washer 2 and a nail body 3. The nail body 3 passes through the nail cap 1 and is limited and fixed by the compression washer 2 . ,Such as image 3 As shown, the nail cap 1 is provided with a U-shaped deep groove 4 for placing the connecting rod; the inside of the deep groove is provided with an internal thread 5, ...
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