Switch button screw loosened 开关按钮上的螺丝松掉
No further position change of the instrument was noticed in the patient carrying loosened screw, but the kyphosis of the thoracolumbar spine aggravated.
螺钉松动患者的内固定物位置无进一步变化，但胸椎后凸角度加大。
The utility model discloses an anti-dismantle screw, and aims to provide an anti-dismantle screw for preventing being loosened and dismounted by general-purpose tools.
本实用新型公开了一种防拆卸螺丝，要解决的技术问题在于提供一种防止使用通用工 具松动、拆卸的防拆卸螺丝。
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