Custom Foot Insoles Using Pressure and Temperature Mapping
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Solution Overview
Problem
Existing footwear fails to adequately address the specific needs of individuals with peripheral artery disease (PAD) and diabetes, leading to discomfort, pain, and potential medical complications due to poor blood circulation and foot issues.
Innovation Solution
A system employing foot scans and 3D customization of insoles based on pressure, temperature, and topographical data to create personalized shoe sole configurations that provide customized pressure and padding, addressing areas of high and low blood circulation, and accommodating foot health issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional footwear is used, then manufacturing simplicity is maintained, but foot health issues worsen due to inadequate support and circulation for PAD and diabetic patients
Solution Approach 1:
The system performs foot scanning, pressure mapping, and temperature detection before footwear production to identify areas requiring special support. This preliminary assessment enables proactive customization of insoles and footwear structures to prevent foot complications in PAD and diabetic patients, rather than reacting to problems after they occur.
Solution Approach 2:
The footwear system applies different structural properties to different regions of the foot based on scanned data. High-pressure areas receive enhanced cushioning and pressure redistribution features, while low-circulation areas (detected via temperature scanning) receive improved blood flow promotion features. This localized customization ensures optimal support where needed without unnecessarily complicating the entire footwear structure.
2Ease of operation
If standardized insoles are used, then manufacturing cost is reduced, but comfort and pain reduction deteriorate due to lack of personalized pressure distribution
Solution Approach 1:
The system varies multiple parameters of the insoles based on individual foot scans including pressure distribution patterns, temperature-based circulation data, and topographical features. This enables customization of cushioning density, firmness, arch support height, and pressure relief zones, achieving superior comfort while using automated manufacturing processes that can handle parameter variations efficiently.
Solution Approach 2:
The insoles are designed with dynamic properties that adapt to the user's gait and pressure patterns. Pressure-sensitive materials and flexible structures allow the insoles to respond to real-time foot movements and weight distribution, providing adaptive comfort that standardized static insoles cannot achieve, while still being manufacturable through modern molding techniques.
3Reliability
If generic footwear designs are used, then production efficiency is maintained, but blood circulation issues worsen due to inability to address high and low circulation areas
Solution Approach 1:
The system replaces manual assessment and customization methods with automated scanning technology that uses pressure sensors and thermal imaging to detect circulation patterns. This mechanical-to-electronic substitution enables rapid data collection and analysis, allowing circulation-based customization to be performed efficiently without manually examining each patient's foot, thus maintaining productivity while improving circulation support.
Solution Approach 2:
The system creates digital copies of each patient's foot anatomy, pressure distribution patterns, and temperature map. These digital models serve as blueprints for manufacturing customized footwear and insoles, eliminating the need for manual measurement and design while ensuring accurate replication of individual foot characteristics that affect blood circulation.
4Ease of operation
If no pressure mapping is performed, then manufacturing process is simplified, but pain and discomfort increase due to inability to identify and relieve pressure points
Solution Approach 1:
The system introduces pressure-mapping technology as an intermediary between the patient's foot and the footwear design process. This intermediary device captures detailed pressure distribution data that would be impossible to obtain through visual inspection alone, enabling identification of hidden pressure points and enabling footwear design that actively relieves these pressures, thus reducing pain while justifying the added system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The customized insoles reduce pain and discomfort by providing targeted support and padding, mitigating further foot problems and enhancing foot health for individuals with PAD and diabetes.
Implementation Method 1
employing any electronic, optical, or mechanical pressure sensing component, such as a pressure sensing pad, which measures multiple points of contact for pressure from the bottom surface of a foot
Implementation Method 2
temperature scanning of areas of the foot to determine areas of high and low blood circulation
Data Source
AI summary
A device and method for the formation of customized footwear insoles and pads is provided. The system employs computers operatively engaged to scanning components to produce individual electronic footprints of a foot of a wearer. Software operating to the tasks of employing the digital data from one or a plurality of electronic footprints, correlating to scans of the feet of a footwear user, will customize an insole or pad for positioning in the footwear to more comfortably support the foot therein.