Patient-Specific Orthopedic Implants for Deformed Bone Fit
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Solution Overview
Problem
Current orthopedic implant technologies face challenges in creating patient-specific and mass-customized implants that accurately match individual anatomical variations, particularly in cases of deformed, shattered, or missing bones, leading to suboptimal fit and functionality.
Innovation Solution
The method involves generating patient-specific and mass-customized orthopedic implants by comparing abnormal bone models with reconstructed models, optimizing parameters, and creating electronic design files using data from statistical atlases and imaging techniques like MRI and CT scans, allowing for precise localization of missing or deformed bone features and determination of optimal implant fixation locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional orthopedic implant technologies are used, then manufacturing simplicity is maintained, but the fit and functionality for patient-specific anatomical variations deteriorates
Solution Approach 1:
The patent applies preliminary action by performing bone model reconstruction, comparison, and implant parameter optimization before the actual implant manufacturing process. The system reconstructs patient-specific bone models from imaging data, compares them with ideal anatomical models, and determines optimal implant parameters in advance, enabling precise patient-specific implant fabrication while maintaining manufacturing efficiency through pre-planning
Solution Approach 2:
The patent implements parameter changes by optimizing multiple implant parameters including size, shape, curvature, and fixation locations based on patient-specific bone model comparisons. The system adjusts these parameters to match the patient's actual anatomy, transforming standard implant designs into customized solutions that achieve superior fit accuracy without requiring completely new manufacturing processes
2Measurement precision
If patient-specific imaging data processing is performed, then implant design accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary reconstruction of patient-specific bone models from imaging data before implant design, creating reusable digital models that can be stored and referenced for future procedures. This pre-processing approach enables accurate anatomical measurements to be obtained once, then applied to multiple implant design iterations without repeating the full imaging analysis process
Solution Approach 2:
The patent uses copying by creating digital replicas of patient bone structures from imaging data. These digital models serve as accurate representations of the patient's anatomy, allowing measurements and comparisons to be performed on the digital copies rather than requiring repeated analysis of the original imaging data, thereby reducing processing time while maintaining measurement precision
Data Source
AI summary
A method of constructing a patient-specific orthopedic implant comprising: (a) comparing a patient-specific abnormal bone model, derived from an actual anatomy of a patient's abnormal bone, with a reconstructed patient-specific bone model, also derived from the anatomy of the patient's bone, where the reconstructed patient-specific bone model reflects a normalized anatomy of the patient's bone, and where the patient-specific abnormal bone model reflects an actual anatomy of the patient's bone including at least one of a partial bone, a deformed bone, and a shattered bone, wherein the patient-specific abnormal bone model comprises at least one of a patient-specific abnormal point cloud and a patient-specific abnormal bone surface model, and wherein the reconstructed patient-specific bone model comprises at least one of a reconstructed patient-specific point cloud and a reconstructed patient-specific bone surface model; (b) optimizing one or more parameters for a patient-specific orthopedic implant to be mounted to the patient's abnormal bone using data output from comparing the patient-specific abnormal bone model to the reconstructed patient-specific bone model; and, (c) generating an electronic design file for the patient-specific orthopedic implant taking into account the one or more parameters.