Single screw type percutaneous zygopophysis pedicle screw internal fixation system
A pedicle screw and fixation system technology, applied in the field of medical devices, can solve problems such as poor effect, complicated accessories, and many special equipment
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[0023] Such as Figure 1 to Figure 4 As shown, the single-screw percutaneous facet facet pedicle screw internal fixation system of the present invention includes a positioning sheath for determining the angle of screw placement and the position of the body surface, a corresponding inner core, and a guide pin for determining the depth of screw placement , Soft tissue dilators, tapping rods, medical hollow drills and drilling tools for drilling bones, nail setters and pedicle screws for expanding the channel for placing screws on the body surface;
[0024] Wherein the soft tissue expander includes a first long tube and a second middle tube sleeved outside the first long tube, the second middle tube is positioned on the first long tube through a locking pin; The expander rests on the fan-shaped leaf on the body surface, which is formed by sliding fit of several fan-shaped units; if each fan-shaped unit is provided with a chute on the upper side, and a corresponding slider is prov...
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