Customized Spine Guide Using 2D Imaging
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Solution Overview
Problem
Current spinal fusion procedures face significant risks due to inaccurate placement of pedicle screws, often resulting in vascular, visceral, and neurological injuries, primarily caused by the surgeon's inability to accurately align the screws with the specific spinal geometry, especially in minimally invasive surgery, where misplacement rates can be as high as 40%.
Innovation Solution
A method and system for creating customized minimally invasive spine guides using two-dimensional imaging, which involves reformating 2D images to approximate a true anatomical coordinate system, locating mating shapes, and generating a machining program for CNC or 3D printing to manufacture a customized spine guide, eliminating the need for full segmentation and 3D modeling, thereby reducing geometric errors and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If full segmentation and 3D modeling are used to create customized spine guides, then manufacturing precision is improved, but productivity deteriorates due to time-consuming processing
Solution Approach 1:
The patent extracts only the essential 2D imaging data needed for spine guide fabrication, eliminating the time-consuming full 3D segmentation process. By taking out only the critical anatomical measurements from 2D images, the system achieves adequate precision without the productivity penalty of complete 3D modeling
Solution Approach 2:
Instead of following the conventional approach of creating 3D models from 2D images (which is time-consuming), the patent inverts the workflow by directly using 2D images to generate fabrication instructions. This reversal eliminates unnecessary intermediate steps while maintaining the essential guidance functionality
2Measurement precision
If full segmentation is performed to accurately represent vertebral surface, then measurement precision is improved, but loss of time increases due to intensive numerical work
Solution Approach 1:
The patent applies partial action by performing only the necessary measurements on 2D images that are sufficient for spine guide fabrication. Rather than completely segmenting the vertebral surface in 3D, the system extracts key anatomical parameters from 2D projections, achieving adequate precision with reduced processing time
Solution Approach 2:
The patent extracts only the essential measurement data needed for guide fabrication from 2D images, eliminating the time-consuming process of complete 3D surface segmentation. By taking out only the critical anatomical parameters, the system maintains measurement precision while dramatically reducing processing time
3Manufacturing precision
If 3D meshes with dense grid points are used to represent vertebral surface, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential anatomical measurements from 2D images, eliminating the complexity of creating and processing dense 3D meshes. By taking out only the critical data needed for guide fabrication, the system maintains manufacturing precision while significantly reducing device and data complexity
Data Source
AI summary
Aspects of present disclosures involve systems, methods, computer program products for creating a customized MIS spine guide using two-dimensional imaging. In particular, the present disclosure provides a method of creating customized implant or instrument trajectory guide using one or more two-dimensional (2D) images of the patient's vertebrae. The method for creating a customized MIS spine guide using two-dimensional imaging generally includes receiving a plurality of two-dimensional images of the patient's vertebrae from an imaging device, reformatting the two-dimensional images for surgical planning and creating a customized MIS spine guide from the 2D images, design a jig based at least on the placement of the mating shapes within the plurality of reformatted two-dimensional images by the computing device, and creating a customized spine guide using a milling machine or 3D printing device corresponding to the machine program.