Anatomical Model Angular Positioning for Implant Sizing Accuracy
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Solution Overview
Problem
Existing methods for viewing and measuring anatomical structures are prone to inaccuracies, which can lead to inappropriate sizing of medical implants and poor outcomes in medical procedures.
Innovation Solution
A computer-implemented method and apparatus that allows for the accurate manipulation of a reference model relative to an anatomical model by enabling users to modify the angular position of points in the reference model within defined constraints, maintaining accuracy and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used by medical professionals, then the process is simple and quick, but the measurement accuracy deteriorates leading to inappropriate implant sizing
Solution Approach 1:
The patent creates a digital 3D copy of the patient's anatomical structure from medical imaging data, allowing precise measurements to be taken on the digital model without requiring complex physical measurement tools during the actual procedure. The digital twin enables accurate replication of anatomical dimensions.
Solution Approach 2:
The patent replaces manual mechanical measurement methods with computer-based digital modeling and automated measurement algorithms. The system uses software to perform measurements on 3D reconstructed models, eliminating the need for physical measurement tools and manual techniques.
2Ease of operation
If fixed distance measurements are taken from segmented anatomical structures, then the measurement process is straightforward, but inaccuracies occur when the fixed distance cannot be precisely determined
Solution Approach 1:
The patent performs measurements and calculations on the digital 3D model before the actual medical procedure. The system pre-determines optimal implant sizes and positions by measuring distances and dimensions on the virtual anatomical model, allowing surgeons to plan procedures with precise measurements already calculated.
Solution Approach 2:
The patent introduces a digital 3D model as an intermediary between the patient's anatomy and the implant selection process. This virtual model serves as a mediator that allows precise measurement and planning without requiring direct physical measurement on the patient, eliminating the uncertainty of manual distance determination.
3Productivity
If inappropriately-sized implants are selected due to measurement errors, then the procedure can proceed quickly, but the surgical outcome deteriorates and may require corrective procedures
Solution Approach 1:
The patent performs comprehensive measurements, implant sizing calculations, and procedure planning in advance using the digital 3D model. This preliminary work ensures that the correct implant size is selected before surgery, preventing the need for corrective procedures while maintaining efficient surgical execution.
Solution Approach 2:
The system provides feedback by comparing measured anatomical dimensions with implant size specifications, allowing the selection of appropriately-sized implants. The digital model enables verification of measurements and calculations, ensuring that the chosen implant will fit correctly before the actual surgery takes place.
Data Source
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Figure 5(A)~5(B)
AI summary
According to an aspect, there is provided a computer-implemented method (200) comprising: receiving (202) an anatomical model of an anatomical structure, the anatomical model comprising a region having a first contour comprising a first plurality of points; receiving (204) a reference model having a second contour comprising a second plurality of points, each point of the second plurality being in correspondence with a respective point of the first plurality; positioning (206) the reference model with respect to the region of the anatomical model such that each point of the second plurality is offset a predetermined distance from its corresponding point of the first plurality; and providing (208) a user control enabling a user to modify a relative angular position of a first point of the second plurality around the position of its corresponding point of the first plurality in a plane containing the first point of the second plurality and said corresponding point of the first plurality.