A 3D-printed digital placement method for sacroiliac screws

Abstract

The invention discloses a 3D printed sacroiliac screw digital insertion method, which relates to the field of medical technology. It includes the following steps: 1. Mimics software to design the ideal safe screw path for sacroiliac screws: collect preoperative CT scan data of the patient's pelvis, import Mimics software into 3D reconstruction of the pelvic 3D model, and 3D editor to reset the sacroiliac joint; 2. SolidWorks and Mimics Software design navigation module; 3. 3D printing out navigation module entity; 4. 3D printing navigation module assisting sacroiliac screw placement. The present invention fully excavates relevant software functions, uses a new design and implementation method, and realizes simple, radiation-free, higher safety, and minimally invasive sacroiliac screw insertion through a new design and implementation method through digital design and 3D printing technology.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a 3D-printed digital placement method of sacroiliac screws. Background technique [0002] Fracture and dislocation of the sacroiliac joint is a common injury to the posterior ring of the pelvis. Anterior bone plates, sacral rods and sacroiliac screws are commonly used to repair and fix the sacroiliac joint. Compared with other fixation methods, only 1-2 sacroiliac screws can achieve very good results, and even only one screw is needed when the anterior pelvic ring is not damaged or well fixed. The fixed effect and simple operation are widely used in clinical practice. [0003] The main difficulties with the placement of sacroiliac screws are the poor visualization of the C-arm bedside fluoroscopy and the proximity of important anatomical structures. Visualization is the key to the fixation of sacroiliac screws. Due to the influence of intestinal gas, important structures such ...

AI Technical Summary

Problems solved by technology

However, the operation of placing screws under the fluoroscopy of an ordinary "C" arm X-ray machine is complicated, and repeated fluoroscopy from multiple angles is required during the operation. The number of fluoroscopy increases, which increases the radiation exposure of patients and medical staff, leading to radiation damage and increasing the risk of tumor occurrence.

Equipment such as computer navigation is expensive, requires professional operation, and is difficult to widely promote and apply

[0009] Although sacroiliac screws are widely used due to their good biomechanical properties and minimally invasive screw placement, however, safety and radiation exposure are still the main problems of sacroiliac screws.

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