Electroactive Orthotic with Dynamic Shape Adjustment
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Solution Overview
Problem
Current orthotic devices require an iterative trial-and-error process for customization, which is expensive and often results in unsatisfactory support for musculoskeletal issues, as they rely on hardened composite materials that are difficult to accurately adjust to an individual's specific needs.
Innovation Solution
A dynamically adjustable orthotic device featuring a flexible support structure with pressure sensors and electroactive materials that can change shape in response to electrical voltage, coupled with a microcontroller and power source, allowing for real-time adjustment of support characteristics based on user movement and pressure data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hardened composite materials are used for orthotic devices, then structural strength and support are improved, but adaptability and ease of customization deteriorate
Solution Approach 1:
The patent applies the dynamics principle by transforming the static hardened composite orthotic into a dynamic system that can change its physical properties in real-time. The orthotic device incorporates actuators that can modify the stiffness, shape, and support characteristics of the device during use, allowing it to adapt to changing user needs and conditions without requiring manual refitting or replacement.
Solution Approach 2:
The patent implements parameter changes by enabling the orthotic device to dynamically adjust its physical parameters such as stiffness, curvature, and support force. Through controlled modification of material properties and structural configuration, the device can transition between different states to provide optimal support for various activities and individual requirements, resolving the contradiction between fixed strength and adaptive customization.
2Manufacturing precision
If iterative trial-and-error process is used for customization, then fit accuracy is improved, but time consumption and manufacturing cost increase
Solution Approach 1:
The patent applies preliminary action by pre-programming the orthotic device with adjustable parameters and control algorithms before deployment. The device includes pre-installed sensors, actuators, and control systems that enable automatic adaptation to user characteristics, eliminating the need for iterative manual fitting processes while maintaining high customization accuracy.
Solution Approach 2:
The patent implements feedback mechanisms through integrated sensors that continuously monitor user physiology, gait patterns, and device performance. This real-time feedback is processed by control systems that automatically adjust device parameters to optimize fit and support, replacing the trial-and-error approach with an automated closed-loop system that achieves precise customization efficiently.
3Reliability
If multiple sets of orthotics are produced through iteration, then desired support is approached, but material waste and manufacturing complexity increase
Solution Approach 1:
The patent applies universality by designing a single orthotic device that can perform multiple functions and adapt to various support requirements through dynamic reconfiguration. The device can be programmed and adjusted to provide different levels and types of support for different activities and conditions, replacing the need for producing multiple specialized orthotic sets and thereby reducing material waste.
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
Enables precise and efficient customization of orthotic support, dynamically adjusting to provide optimal support and relief for musculoskeletal issues without the need for multiple iterations, improving user satisfaction and reducing costs.
Implementation Method 1
one or more pressure sensor comprises a piezoelectric material capable of emitting an electrical voltage when depressed
Implementation Method 2
Each unit comprises at least one electroactive material and is configured for coupling to the microcontroller and to a power source
Data Source
AI summary
An orthotic device comprises a flexible support structure comprising at least one surface for contacting a body part of a user, a plurality of pressure sensors configured for coupling to a microcontroller, and a plurality of displacement regions. Each region defines a portion of said flexible support structure, wherein each portion includes at least one sensor disposed on or below the at least one surface and at least one electrically deformable unit. Each unit comprises at least one electroactive material and is configured for coupling to the microcontroller and to a power source. The device is dynamically adjustable to change its shape and support properties, when an electrical voltage is applied to the electroactive material under the control of a microcontroller.