Pedicle operation guide plate optimal screw placement path intelligent generation method

Abstract

The invention provides a pedicle operation guide plate optimal screw placement path intelligent generation method. The method comprises the steps: S1, a two-dimensional CT scanning image for vertebrais acquired; S2, according to the two-dimensional CT scanning image, a closed three-dimensional network model for the vertebra is rebuilt in a three-dimensional mode, and a closed curved surface is formed; S3, a vertebra screw placement path set optimal model with the optimal length as a target is built; and S4, the set optimal model is solved by using a Lagrange multiplier method, and the optimalscrew placement path is acquired. According to the pedicle screw placement path generation method provided by the invention, the automatic optimal screw placement path generation problem is solved, and as for a given vertebra three-dimensional digital geometric model, based on the user requirements, on the premise of ensuring the operation safety, the longest screw placement path can be generatedautomatically.

Description

technical field [0001] The invention relates to the medical field, in particular to a method for intelligently generating the optimal screw path of a pedicle surgical guide plate. Background technique [0002] In the treatment of spondylolisthesis reduction, spinal reinforcement and other operations, pedicle screw internal fixation is generally used, but because the inherent anatomical structure of the pedicle is relatively narrow, and it is adjacent to important anatomical structures such as blood vessels, nerves and spinal cord, Accurately implanting a pedicle screw with a suitable length is very critical. If there is a large deviation in the length and position of the implanted pedicle screw, it will damage the adjacent important tissue structure and cause serious complications. Therefore, the generation method of the pedicle screw screw path is the key to various spinal operations. [0003] However, at present, the main methods for generating the screw path for pedicle ...

AI Technical Summary

Problems solved by technology

Anatomical landmark method, the traditional generation method takes a long time and a lot of energy, and the angle of screw entry is mainly judged by the experience of the operator, to be precise, it depends on the feel of the operator and the alignment of the pedicle probe. Probing the screw insertion channel to ensure the accurate placement of pedicle screws requires high clinical experience of doctors, and the accuracy is difficult to guarantee

X-ray fluoroscopy-assisted method, the operation time is longer and it is easy to aggravate the patient's condition. A large number of X-rays will also cause secondary damage to the patient and miss the best treatment time.

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