Spinoscope and percutaneous pedicle screw composite system

Abstract

The spinal mirror and percutaneous pedicle screw composite system comprises a screw sleeve, a connecting rod and a screw seat, the connecting rod penetrates into the screw sleeve, the first end of the connecting rod is movably connected with the inner wall of the first end of the screw sleeve, and the second end of the connecting rod is movably connected with the inner wall of the second end of the screw sleeve. The second end of the connecting rod penetrates out of the second end of the screw sleeve and is fixedly connected with the first end of the screw base. According to the pedicle screw, the screw sleeve and the connecting rod are arranged and matched with the ball seat, the ball head, the conical surface cushion seat and the spherical surface gasket, so that the connecting rod can be finely adjusted by any angle in the circumferential direction, the accuracy of the screw angle is indirectly improved, and the telescopic anti-loosening mechanism is arranged, and the driving block controls the jacking block to stretch out and jack the hole wall of a pedicle screw hole; on one hand, the overall pulling resistance and tension resistance of the screw are improved, and on the other hand, the screw sleeve can be effectively prevented from loosening, so that the fixing degree does not completely depend on the tightening degree of the screw.

Description

technical field [0001] The present invention relates to the technical field of spinal surgery. Specifically, it is a composite system of spinal mirror and percutaneous pedicle screw. Background technique [0002] The pedicle screw technique is a surgical method used to treat the spine. The pedicle is one of the components of the pedicle. Simply put, the pedicle screw technique is to place a screw on the pedicle, and then put multiple The screws are connected to each other to fix the spine to a certain extent, so as to achieve the purpose of treating the spine. [0003] Most of the existing pedicle screw is a solid screw or a screw with a hole. The hole is mostly used for injecting bone cement or drugs, etc., and its essence is still a screw. Both directly act on the screw, and the screw acts on the screw hole of the pedicle. On the one hand, the screw is in a single static pull for a long time, and the stress is relatively concentrated, which may lead to deformation and lo...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing pedicle screws are solid or have holes. Most of the holes are used for injecting bone cement or drugs. The essence is still a screw. In actual use, the force of spinal fixation and pulling Both directly act on the screw, and the screw acts on the screw hole of the pedicle. On the one hand, the screw is under a single static pull for a long time, and the stress is relatively concentrated, which may cause the screw to deform and loosen. , the tightening degree of the screw is basically determined by the tightening degree of the screw. To a certain extent, the tighter the screw is, the better the fixation effect is. However, for patients with osteoporosis, it is difficult for medical staff to control The tightening force will lead to poor screw tightening, which will affect the surgical effect

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