Extremity Model Generation for Custom Orthoses Without 3D Scanning
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Solution Overview
Problem
Existing pre-assembled orthoses and prostheses face challenges in conforming to individual patient anatomy, leading to issues with aesthetics and wearing comfort, and current methods for patient-specific solutions are laborious and time-consuming.
Innovation Solution
A method for determining a model of an extremity using patient-provided input parameters, such as demographic and pathological information, to generate a raw model without requiring a 3D scan, allowing for iterative refinement and visualization, enabling production of individually designed orthoses or prostheses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pre-assembled orthoses and prostheses are used, then cost is reduced, but conformity to patient anatomy and wearing comfort deteriorate
Solution Approach 1:
The patent changes the parameters used for model generation from requiring detailed 3D scans to using simplified input parameters (basic measurements, demographic data). This allows standard models to be quickly adapted to individual patients by adjusting key parameters, achieving both cost-effectiveness and anatomical conformity
Solution Approach 2:
The patent creates a library of pre-defined extremity models that can be selected and adapted based on patient characteristics. This preliminary preparation of models allows rapid customization without requiring time-consuming 3D scanning and manual modeling for each patient
2Manufacturing precision
If individual modeling and production of orthoses or prostheses is performed, then conformity to patient anatomy is improved, but labor and time consumption increase
Solution Approach 1:
The patent uses digital copying of extremity models from a library, where standardized models are replicated and then individually adapted. This eliminates the need for manual modeling while maintaining patient-specific accuracy through parameter-based customization of the copied models
Solution Approach 2:
Instead of creating models from scratch for each patient, the system adjusts parameters of existing models to match patient anatomy. This parameter-based adaptation significantly reduces the time and labor required compared to traditional individual modeling while maintaining anatomical precision
3Measurement precision
If 3D scanning is performed to capture the extremity, then measurement accuracy is improved, but the process becomes more complex and requires medical professionals
Solution Approach 1:
The patent extracts only the essential measurement parameters needed for model generation, eliminating the need for comprehensive 3D scanning. By taking out only the critical dimensions and characteristics, the system achieves sufficient accuracy while greatly simplifying the measurement process and enabling patients to perform it themselves
4Device complexity
If manual measurements are used instead of 3D scanning, then process simplicity is improved, but measurement accuracy and completeness deteriorate
Solution Approach 1:
The patent creates a universal model generation system that works with multiple types of input data (basic measurements, demographic information, simple patient-provided data). This multi-functional approach allows the system to achieve accurate results through simple processes that can be performed by patients without medical professionals
Data Source
AI summary
The invention relates to a method for determining a model of an extremity, for providing an individually designed orthosis or prosthesis, the method comprising a step of displaying at least one option for data input by a user, in particular in the form of a patient questionnaire. In a further step, the determination of at least one patient-specific input parameter takes place on the basis of the data input. In one step, the creation of at least one raw model takes place using the at least one input parameter. In a further step, the ascertaining of at least one measured parameter of the raw model and, according to one step, the visualizing, in particular displaying, of the raw model and the at least one measured parameter takes place. Furthermore, the invention relates to a computer-readable storage medium and also a system.