3D Anatomical Modeling for Percutaneous Implant Sizing
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Solution Overview
Problem
Non-invasive percutaneous implantation procedures, such as stent and prosthetic valve implantation, face challenges due to limited field of view and reliance on two-dimensional imaging, leading to inaccuracies in sizing and positioning, which can result in complications like valve regurgitation and vascular damage.
Innovation Solution
A method involving advanced imaging and modeling strategies to acquire and segment 3D models of anatomical structures, allowing for precise measurement and selection of appropriately sized implants and optimal access points, using techniques like CT scans and 3D reconstruction to enhance periprocedural planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If 2D imaging modalities are used during percutaneous implantation procedures, then the procedure can be performed non-invasively, but the field of view is limited and measurement precision deteriorates
Solution Approach 1:
The patent transforms 2D imaging data into 3D anatomical models, adding a spatial dimension to the visualization. This allows physicians to view anatomical structures from multiple angles and obtain accurate measurements without requiring invasive procedures. The 3D model reconstruction from 2D images resolves the contradiction by providing enhanced measurement precision while maintaining the non-invasive nature of the procedure.
Solution Approach 2:
The patent introduces a computer-based imaging system as an intermediary between the patient's anatomy and the physician's decision-making process. This intermediary processes 2D imaging data, generates 3D models, and provides virtual simulation capabilities, thereby improving measurement precision without compromising the non-invasive approach.
2Device complexity
If 2D imaging is used for implantation planning, then the procedure is simpler to perform, but the positioning accuracy and implant sizing deteriorate
Solution Approach 1:
The patent performs comprehensive 3D modeling and virtual simulation before the actual implantation procedure. By pre-determining the optimal implant size, position, and orientation through virtual testing on 3D anatomical models, the system eliminates the need for complex intra-procedural adjustments. This preliminary planning enhances positioning accuracy while keeping the actual implantation procedure simple and straightforward.
Solution Approach 2:
The patent creates a virtual copy of the patient's anatomy through 3D modeling based on 2D imaging data. This digital replica allows for precise measurement and simulation without affecting the simplicity of the physical procedure. The virtual model serves as a test bed for planning, ensuring accurate implant positioning while maintaining procedural simplicity.
3Reliability
If accurate sizing and positioning are achieved through advanced imaging, then implantation success improves, but the imaging and planning complexity increases
Solution Approach 1:
The patent describes a multi-functional imaging system that can perform multiple tasks: acquiring 2D images, reconstructing 3D models, performing measurements, and simulating implant placement. By consolidating these functions into a single integrated system, the patent improves implantation success rates while managing overall system complexity rather than requiring separate complex devices for each function.
4Measurement precision
If 3D modeling and sectioning techniques are used to obtain precise anatomical measurements, then implant sizing accuracy improves, but the processing time and computational requirements increase
Solution Approach 1:
The patent performs 3D model reconstruction and segmentation as preliminary steps before the actual implantation procedure. By completing the complex computational work in advance, the system provides ready-to-use 3D models and measurements that guide the relatively simple subsequent implantation steps. This approach maximizes measurement precision while minimizing the time required during the critical implantation phase.
Data Source
AI summary
A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size.