Patient-Specific Surgical Guide Construction via Local 3D Segmentation
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Solution Overview
Problem
The existing methods for constructing patient-specific surgical guides are time-consuming, expensive, and prone to inaccuracies due to the need for multiple data flows and manual segmentation of 3D medical images, which can lead to mismatches between the guide and the anatomical structure during surgical interventions.
Innovation Solution
A method that focuses on local segmentation of 3D medical images to quickly and accurately define contact elements, allowing for automatic or interactive determination of regions of interest, and constructing patient-specific surgical guides with improved accuracy by generating contact and guiding elements, reducing the complexity and cost of the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual segmentation of 3D medical images is performed to define contact elements, then accuracy of anatomical structure reconstruction is improved, but construction time and cost increase significantly
Solution Approach 1:
The system enables the surgeon to directly interact with and modify the planning data in their own workflow without requiring external expert intervention. The surgeon can adjust contact element positions and verify accuracy themselves, eliminating the time-consuming manual segmentation process while maintaining high precision through direct surgical input.
2Reliability
If multiple data flows between radiologist, expert center, and surgeon are implemented, then comprehensive planning is achieved, but process complexity and cost increase
Solution Approach 1:
The patent merges the planning function directly into the surgeon's workflow by providing tools that allow the surgeon to define and modify contact elements and guiding elements within their own environment. This consolidation eliminates the need for separate expert center processing and multiple data transfer flows, reducing process complexity while maintaining comprehensive planning quality through the surgeon's direct involvement.
3Productivity
If standard default parameters are used for guiding element positioning, then construction speed is improved, but adaptability to specific surgical needs decreases
Solution Approach 1:
The system provides dynamic planning capabilities where the surgeon can interactively adjust contact element positions and guiding element parameters based on specific surgical requirements. The planning is not fixed to default parameters but can be dynamically modified during the surgeon's workflow, allowing both rapid initial setup and flexible adaptation to individual patient needs and surgical preferences.
Data Source
AI summary
The invention relates to a method for constructing a patient-specific surgical guide comprising at least one contact element comprising a contact surface intended to match an anatomical structure to be treated and at least one guiding element for guiding a surgical instrument to treat said anatomical structure, said method comprising: —receiving a 3D medical image of the anatomical structure of the patient; —determining, in said 3D medical image, at least one region of interest containing a portion of the external surface of the anatomical structure intended to match a respective contact element of the surgical guide; —segmenting the 3D medical image in said determined region of interest so as to locally reconstruct the external surface of the anatomical structure; —computing the contact surface of the contact element from said reconstructed local surface of the anatomical structure; —constructing the at least one contact element to include the contact surface. —defining the position of the at least one guiding element with respect to the anatomical structure; —constructing the surgical guide by generating a rigid body including the at least one guiding element and said at least one contact element.