Mandibular Resection Template Segmentation
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Solution Overview
Problem
Existing mandibular resection templates are not sufficiently precise, are cumbersome to handle, and are expensive, making them inefficient for use in combination with fibula bone material removal and placement templates during jaw reconstruction.
Innovation Solution
A universal mandibular resection template with a central component and positioning aids for precise alignment, along with a system of thin mini-plates for transplant fixation, designed to be adaptable to the average patient anatomy, allowing for precise cuts and efficient reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If previously known mandibular resection templates are used, then cutting guidance is provided, but precision is insufficient and handling is awkward
Solution Approach 1:
The template is divided into a central component and separate cutting tool guide sections that can be independently positioned and attached to different segments of the jawbone. This segmentation allows each component to be optimized for its specific function while improving overall precision and ease of handling.
Solution Approach 2:
The template includes pre-formed guide sections and positioning elements that are prepared in advance according to standard anatomical configurations. These preliminary preparations enable quick attachment and precise alignment without requiring complex intraoperative adjustments.
2Manufacturing precision
If previously known mandibular resection templates are used, then cutting guidance is provided, but the device is expensive
Solution Approach 1:
The template is designed as a universal device that can accommodate multiple cutting patterns and jawbone configurations through standardized guide sections. This multi-functionality eliminates the need for multiple specialized templates, reducing overall manufacturing costs while maintaining high precision across different applications.
Solution Approach 2:
The template utilizes standardized parameters and modular components that can be manufactured using conventional processes. By adopting standard dimensions and interchangeable parts, manufacturing complexity and cost are reduced while preserving cutting precision.
3Manufacturing precision
If patient-specific templates are made, then precision is improved, but cost and time increase significantly
Solution Approach 1:
The template incorporates pre-formed guide sections based on standard anatomical data that can be attached directly to pre-marked jawbone segments. This preliminary preparation of standardized components eliminates the need for time-consuming custom fabrication while achieving sufficient precision for the majority of cases.
Solution Approach 2:
The universal template design covers approximately 80% of resection patterns through its modular guide sections, providing a time-efficient solution that does not require patient-specific customization for most clinical scenarios.
4Strength
If thick reconstruction plates are used for fixation, then structural strength is ensured, but material removal is excessive
Solution Approach 1:
The fixation system uses thin mini-plates (1.0 mm thickness) with strategically placed holes that provide sufficient structural strength at critical locations while minimizing overall material bulk. This localized reinforcement approach maintains fixation strength without requiring excessive plate thickness.
Solution Approach 2:
The plate thickness parameter is reduced from conventional 2.0-3.0 mm to 1.0 mm, combined with optimized hole distribution and positioning. This parameter change reduces bone material removal and soft tissue interference while maintaining adequate mechanical strength through strategic design.
Data Source
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AI summary
The invention relates to a mandibular resection template (1) comprising a central component (2) which is prepared for attachment to a segment, for example a symphysis segment of a jawbone, such as a mandible or maxilla. At least two cutting tool guide portions (3) are present at the central component (2), a positioning aid (4) being provided between the two or more cutting tool guide portions (3) in order to obtain a spatially correct orientation of the mandibular resection template (1) with respect to the jawbone.