A method for making a personalized navigation template for occiput-cervical fusion screws

Abstract

The invention relates to a method for making a personalized navigation template for occipital-cervical fusion screw insertion. Fix it at the normal position of the eyes in front of the patient’s eyes when walking upright; make a positioning navigation template for occipital screws and axial pedicle screws; make a sagittal model according to the above-mentioned sagittal angle of the cervical and occipital region and the distance between the occipital and axial screws Rod stl file; and use 3D printing or other processing methods to manufacture. During the operation, the accuracy of the screw insertion position and direction of the occipital bone and the axis is improved; the subjectivity of the pre-bending and length selection of the occipital-cervical connecting rod is omitted, and the number of fluoroscopy is reduced; it is suitable for traumatic fractures of the atlantoaxial Dislocation, congenital deformity and other diseases can cause atlantoaxial instability, spinal stenosis and other diseases; the operation is simple, the requirements for doctors are low, the operation risk is reduced, the operation efficiency is improved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the field of computer-aided technology and medical equipment, in particular to a method for making a personalized navigation template for occipital-cervical fusion screws. Background technique [0002] The occipital neck refers to the anatomical region composed of the foramen magnum, atlas and axis, including important central nerves such as the medulla oblongata, the junction of the cervical medulla and the upper cervical cord. The anatomical structure of this region is complex, adjacent to important, surgical Intervention is difficult, and its treatment is one of the difficulties in spinal surgery. Occipitocervical fixation was first reported by Foerster in 1927. Later, this operation has been considered to be the treatment of occipital and upper cervical spine instability caused by congenital deformities of the occipital and upper cervical spine, traumatic fracture dislocation, and other diseases. Useful ways. The current ...

AI Technical Summary

Problems solved by technology

Among them, the axial pedicle is adjacent to the spinal cord and vertebral artery, so the risk of screw placement is high; the position of the occipital screw and plate is mostly determined by the anatomical relationship of the surgeon to the occipital bone during operation, which is highly subjective. Complications such as plate, subdural hemorrhage, screw loosening, and plate deviation; the length and radian of the connecting rod are mostly determined by the surgeon who temporarily breaks and bends the rod during the operation, which is highly subjective and repeatedly broken during the operation Rod and bending, repeated fluoroscopy, the sagittal angle of the neck and occiput after surgery is still unsatisfactory, and the patient's vision is not satisfactory when walking upright, so these have always been difficult technical problems in clinical practice