Personalized atlantoaxial pedicle screw step-by-step navigation template device and making method thereof
A pedicle and navigation template technology, applied in the field of medical devices, can solve problems such as screw placement errors, deformation, and difficulty in changing the screw path, and achieve the effects of convenient operation, improved accuracy, and convenient fixation
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Embodiment 1
[0043] A personalized atlantoaxial pedicle screw step-by-step navigation template device, equipped with a screw positioning guide plate, a drilling guide plate and a tapping guide plate, the size of the guide hole (tube) is gradually enlarged, and the screw insertion is assisted one by one according to the order of screw placement Vertebral body, complete the screw placement. That is, the inner diameter of the guide hole of the positioning guide < the inner diameter of the guide tube of the drilling guide < the inner diameter of the guide tube of the tapping guide guide.
[0044] The screw positioning guide plate is equipped with a positioning mechanism, a positioning hole for the screw entry point, and a horizontal connection structure. The positioning hole is set on the positioning mechanism, and the positioning mechanism is applied on the back of the atlantoaxial vertebrae. It fits completely with the articular process; the two ends of the horizontal connection mechanism ar...
Embodiment 2
[0061] Other content is as in embodiment 1, wherein
[0062] The angle between the transverse junction and the top seat is >90°C, and the height of the transverse junction is greater than the height of the spinous process of the patient. There is an identification block on the top base for easy identification.
[0063] The inner diameter of the positioning hole is 2.2 or 2.7mm, the inner diameter of the drilling guide tube is 3.2 or 3.8mm, and the inner diameter of the tapping hole guide tube is 3.8 or 4.2mm. The drill guide tube has an outer diameter of 10 or 14mm and a length of 8 or 12mm.
[0064] The tapping guide tube has an outer diameter of 11 or 13mm and a length of 14 or 16mm. Base thickness is 2.8 or 3.2mm.
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