Custom-Fit Orthopedic Casts Using Imaging and 3D Printing
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Solution Overview
Problem
Traditional casts for injured limbs are bulky, uncomfortable, unhygienic, and lack customization, leading to issues such as skin irritation, mold growth, and inconsistent fit due to anatomical changes during healing.
Innovation Solution
A method involving X-ray imaging to generate precise measurements, using computer-aided design (CAD) to create a custom-fit cast model, and 3D printing with materials like anti-microbial substances to produce a tailored orthopedic immobilization device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional casts are used for immobilization, then the limb is supported during healing, but the cast becomes bulky, uncomfortable, and unhygienic
Solution Approach 1:
The cast system is segmented into multiple functional layers: a breathable outer shell, an antimicrobial barrier layer, and a moisture-wicking inner layer. This segmentation allows each layer to address specific harmful factors while maintaining immobilization functionality.
Solution Approach 2:
The cast utilizes composite materials combining breathable polymers for the outer shell, antimicrobial agents embedded in the barrier layer, and moisture-absorbing materials in the inner layer. This composite structure provides both medical functionality and comfort while preventing skin irritation and hygiene problems.
2Reliability
If traditional casts are used, then immobilization is provided, but the cast does not adapt to anatomical changes during healing
Solution Approach 1:
The cast incorporates dynamic adjustment mechanisms including adjustable straps, buckles, and velcro fasteners that allow the cast to be modified as the patient's anatomy changes during the healing process. This maintains proper immobilization while adapting to swelling, atrophy, or healing progress.
Solution Approach 2:
The cast design allows for parameter changes in tightness, positioning, and configuration as the patient heals. The adjustable components enable healthcare providers to modify the cast's physical parameters to match the changing anatomical dimensions and requirements throughout the recovery period.
3Manufacturing precision
If custom-fit casts are produced using current methods, then better fit is achieved, but the process requires custom scanning equipment and outsourcing, causing delays
Solution Approach 1:
The system enables self-service custom cast production by providing healthcare providers with portable scanning equipment and software to create custom cast designs in-house. This eliminates the need for outsourcing to external manufacturers, maintaining high manufacturing precision while significantly reducing production time and enabling rapid deployment of custom-fitted casts.
Data Source
AI summary
A method and system for creating a custom-fit orthopedic cast comprises obtaining at least one measurements taken from at least one image of a body part, selecting a template cast, modifying the template cast according to the measurements taken from the at least one image to generate a custom cast model and rendering a custom cast based on the custom cast model.