Anti-rotating and anti-retreating hollow screw

The utility model relates to the field of medical screws, in particular to an anti-rotating and anti-retreating hollow screw which comprises a screw main body with a hollow interior and two open ends, a solid rod inner core inserted into the screw main body in a sliding mode and a locking piece arranged in the screw main body to connect the solid rod inner core and the screw main body into a whole. According to the hollow screw, through the built-in solid rod inner core, the strength of the hollow screw is greatly improved, meanwhile, the anti-rotation and retaining effects are achieved, the stability and reliability after the hollow screw is implanted are guaranteed, and the operation failure occurrence rate is reduced. 本申请涉及医用螺钉的领域，尤其是涉及一种防旋防退的空心螺钉，包括内部中空且两端为开口的螺钉主体、滑动插接在螺钉主体内的实心杆内芯，以及设置在螺钉主体内以将实心杆内芯和螺钉主体连接为一个整体的锁件。本申请通过内置的实心杆内芯，使得空心螺钉的强度大大提高，同时具备防旋、止退的作用，保证了空心螺钉植入后的稳定性及可靠性,减少手术失败发生率。