Patient-Specific Bone Plate Modeling From 3D Bone Geometry
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Solution Overview
Problem
Existing bone plates require time-consuming alterations to fit the unique shapes and sizes of individual patient bones, as they are typically made from metal materials.
Innovation Solution
A method and system for designing a bone plate using a 3D model of the patient's bone structure, allowing for user-input of designated points to calculate 3D coordinates and generate a customized bone plate model based on pre-stored templates, which can be 3D printed for precise fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If commercially available bone plates are used, then a wide range of specifications are available, but time-consuming alterations (bending and cutting) are required to fit patient bones
Solution Approach 1:
The system performs preliminary actions by obtaining 3D bone data beforehand, calculating the optimal bone plate configuration and extension route in advance, and generating a customized 3D model before the actual surgery. This eliminates the need for time-consuming alterations during the surgical procedure.
Solution Approach 2:
The system changes the parameters of the bone plate design by allowing flexible adjustment of the extension route, plate shape, and configuration based on the specific 3D bone structure. This enables customization of each bone plate to match the patient's unique anatomy without requiring physical alterations.
2Manufacturing precision
If bone plates are customized to fit individual bone shapes, then precise fit is achieved, but the complexity of the design process increases
Solution Approach 1:
The system creates a digital 3D copy or replica of the patient's actual bone structure. This digital model serves as a precise template for designing the bone plate, allowing for accurate fitting while simplifying the design process through computer-aided visualization and manipulation.
Solution Approach 2:
The system replaces manual mechanical design and physical trial-and-error fitting with an automated computer-based design system. The processor automatically calculates the extension route and generates the bone plate model based on input parameters, significantly reducing design complexity.
3Strength
If metal bone plates are used, then structural strength is provided, but alterations require time and specialized tools
Solution Approach 1:
The system performs preliminary design and configuration calculations before the bone plate is manufactured or altered. By determining the exact extension route and shape requirements in advance, the bone plate can be pre-cut or pre-shaped, eliminating the need for time-consuming alterations during surgery.
Data Source
AI summary
A method for designing a bone plate to be used in an orthopedic surgery and to be placed on a bone structure includes: constructing a three-dimensional (3D) model of the bone structure; controlling a display screen to display an image that corresponds with the 3D model; in response to a plurality of designated points inputted on the image, calculating a plurality of sets of 3D coordinates respectively for the plurality of designated points, and generating an extension route based on the plurality of sets of 3D coordinates; and generating a 3D model of the bone plate based on the extension route and at least one pre-stored bone plate template.