Navigation device improving bone screw entering quality for departments of orthopedics and others

The utility model discloses a navigation device improving the bone screw entering quality for the departments of orthopedics and others. The device comprises a model machined according to fast forming equipment and a navigation module guiding a screw entering point, direction and depth. The module is applied to clinical practices, namely complex and dangerous operations of screwing screws into bones for the departments of orthopedics, cerebral surgery and maxillofacial surgery, such as the determination of screw entering point, direction and depth of a cervical pedicle screw, and effective quality control is performed. The process is implemented according to prescribed procedures strictly, the operation success rate can be increased greatly, the failure rate is decreased, and complications are reduced. The implementation method includes performing CT scanning on a bone of the affected part of a patient previously, and performing fast-formed bone model manufacture according to the information acquired by scanning; allowing an operation doctor to drill holes in the model, measure and manufacture the navigation module; using the completed model and module in the operation after disinfection finally.